JP5012102B2 - Vending machine control equipment - Google Patents

Description

  The present invention relates to a control device for a vending machine that performs heating control of a vending machine that sells products such as can drinks that are cooled or heated.

  In recent years, demands for reducing power consumption in vending machines have increased, and as a means of reducing power consumption, products such as canned beverages are heated using a heat pump system that uses waste heat generated by cooling or heat from the atmosphere. What to do has been proposed.

  In addition, the heat pump system is inferior in starting characteristics at low outside air temperature, so the heating capacity is increased by increasing the number of revolutions of the compressor at low outside air temperature or at starting, and the heating capacity is supplemented by using an auxiliary heater. A vending machine has also been proposed (see, for example, Patent Document 1).

  Hereinafter, a conventional vending machine will be described with reference to the drawings.

  FIG. 12 is a refrigerant circuit diagram of a conventional vending machine.

  As shown in FIG. 12, the conventional vending machine includes a storage room including a hot / cold switching room 1, a cold dedicated room 2, and a second cold dedicated room 3, and is installed in the hot / cold switching room 1. To cool the indoor heat exchanger 30, the evaporator 5 installed in the cold dedicated chamber 2, the second evaporator 6 installed in the second cold dedicated chamber 2, and the cold dedicated chamber installed outside the storage chamber Outdoor condenser 7, compressor 8 for cooling the cold room, outdoor heat exchanger 31 installed outside the storage room for cooling / heating the hot / cold switching room, hot / cold switching room 1 A heat pump system including a cooling / heating compressor 34 for cooling / heating the air. Here, the cooling and warming compressor 34 controls the capacity by changing the number of rotations corresponding to the change in the room temperature of each storage chamber.

  Further, the expansion valve 10 and the expansion valve 11 each have a blocking function while reducing the pressure of the refrigerant passing therethrough, and control the presence or absence of the refrigerant flow, respectively, and the four-way switching valve 32 controls the direction of the refrigerant flow. To do.

  Moreover, in order to complement the heating capability of the heat pump system, an auxiliary heater 16 made of an electric heater having a heating capability that is almost half of the heating capability of the heat pump system is installed on the windward side of the indoor heat exchanger 30. .

  The operation of the conventional vending machine configured as described above will be described below.

  When the hot / cold switching chamber 1 is cooled, the four-way switching valve 32 is switched to the cooling side and the cooling / heating compressor 34 is driven. The refrigerant discharged from the cooling and heating compressor 34 is condensed in the outdoor heat exchanger 31, and then the refrigerant evaporated in the indoor heat exchanger 30 is returned to the cooling and heating compressor 34.

  At this time, when the hot / cold switching chamber 1 reaches a predetermined temperature, the operation of the cooling and heating compressor 34 is stopped.

  Next, when the hot / cold switching chamber 1 is heated, the four-way switching valve 32 is switched to the heating side, and the cooling / heating compressor 34 is driven. The refrigerant discharged from the cooling and heating compressor 34 is condensed in the indoor heat exchanger 30, and the refrigerant evaporated in the outdoor heat exchanger 31 is returned to the cooling and heating compressor 34.

  When the hot / cold switching chamber 1 reaches a predetermined temperature, the operation of the cooling and heating compressor 34 is stopped.

Here, the hot / cold switching chamber 1 can be efficiently heated using the condensed waste heat of the refrigerant generated when the cold dedicated chamber 2 and the second cold dedicated chamber 3 are cooled. Compared with the case where the hot / cold switching chamber 1 is heated using another heating means, the power consumption can be reduced.
JP 2002-288726 A

  However, in the above-described conventional configuration, when the cooling / warming setting switching is performed, when the cooling / cooling switching valve of the heat pump system is switched in a state where the balance of the pressure in the system is not stable, the cooling / cooling switching operation cannot be normally performed The heat pump system has a problem that there is a risk of operation different from the setting.

  The present invention solves the conventional problem, and by providing a reference temperature for determining that the operation of the cold / warm switching valve has not been performed normally, if the cold / warm switching is not performed normally, It is an object of the present invention to provide a control device for a vending machine capable of preventing abnormal operation by performing switching operation of the cold / warm switching valve until the internal pressure is balanced.

  In order to solve the above-mentioned conventional problem, the invention according to claim 1 of the present invention is a vending machine having a hot / cold switching chamber for storing goods, and includes a compressor, an outdoor heat exchanger, a cold temperature switching valve, A heat pump system comprising an indoor heat exchanger for heating or cooling the hot / cold switching chamber using atmospheric heat; a heater as a heating source for heating the hot / cold switching chamber; When the cooling / heating setting is switched, the heat pump system and the heater are stopped until the system internal pressure is balanced. In a vending machine that performs the switching operation of the cold / warm switching valve after waiting for a predetermined time, if the operation of the cold / warm switching valve is not performed normally, the pressure in the system varies. Until the scan is obtained characterized by repeating the switching operation of the cold switching valve.

  As a result, when the cold / warm switching is not performed normally, it is possible to prevent abnormal operation by switching the cold / warm switching valve until the system pressure is balanced.

  The control device of the vending machine of the present invention can prevent abnormal operation by performing the switching operation of the cold / cold switching valve until the system internal pressure is balanced when the cold / cold switching is not normally performed, In the case of the cooling setting, the heating deterioration due to the product being heated can be reduced, and in the case of the heating setting, the power consumption by the cooling operation of the heat pump system and the heating operation of the heater can be reduced.

  The invention according to claim 1 is a vending machine having a hot / cold switching chamber for storing goods, and includes a compressor, an outdoor heat exchanger, a cold / cold switching valve, and an indoor heat exchanger, and utilizes the heat of the atmosphere. A heat pump system for heating or cooling the hot / cold switching chamber, a heater as a heating source for heating the hot / cold switching chamber, an indoor temperature sensor for detecting the indoor temperature, and an outdoor air temperature. When the cooling / warming setting is switched, the heat pump system and the heater are stopped, and after waiting for a predetermined time until the pressure in the system is balanced, the switching operation of the cool / warm switching valve is performed. In the vending machine to be operated, when the operation of the cold / warm switching valve is not performed normally, the switching operation of the cold / warm switching valve is repeated until the system internal pressure is balanced. By performing returned, if the cold switching is not performed normally, by system pressure makes a switching operation of the cold switching valve until balance, it is possible to prevent abnormal operation.

  The invention according to claim 2 further includes a number setting means for setting in advance the number of times the switching operation of the cold temperature switching valve is repeated until the pressure in the system is balanced with the invention according to claim 1, When the operation of the cooling / temperature switching valve is not normally performed, the operation of the cooling / temperature switching valve is performed a predetermined number of times, so that the cooling / temperature switching is not performed normally due to the balance of the pressure in the system. Abnormal operation can be prevented, and an operation protection operation can be performed in the case where the cooling / temperature switching is not performed due to the abnormality of the cooling / cooling switching valve.

  The invention according to claim 3 further comprises timer means for counting time in the invention according to claim 2, and the time counted by the timer means after the operation of the cold temperature switching valve is performed a set number of times. If the operation of the cooling / temperature switching valve is not performed normally even after a predetermined time elapses, the heat pump system is stopped for the cooling setting, and the heating pump system is stopped for the heating setting. Only when heating is performed, abnormal operation when the cooling / cooling switching is not performed normally due to the balance of the pressure in the system can be prevented, and when the cooling / cooling switching is not performed due to an abnormality of the cooling / cooling switching valve. The operation protection operation is possible.

  According to a fourth aspect of the present invention, in addition to the third aspect of the present invention, the apparatus further includes power-on detection means for detecting when the power is turned on, and the setting switching between cooling / heating is performed at the time of power-on. In the case of being performed, after the operation of the cooling / temperature switching valve is performed only once, the operation of the cooling / temperature switching valve is not performed normally even if the time counted by the timer means elapses a predetermined time. In the case of cooling setting, the heat pump system is stopped. In the case of heating setting, the heat pump system is stopped and heating is performed only with the heater, so that the pressure in the system as when turning on the power must be balanced. When there is no, it becomes possible to execute the operation protection operation in a short time when the cooling / temperature switching is not performed due to the abnormality of the cooling / temperature switching valve.

  The invention according to claim 5 of the present invention further comprises stop time storage means for storing the stop time of the heat pump system in addition to the invention according to claim 4, and when the power is turned on. Determining whether or not the predetermined stop time stored by the stop time storage means has elapsed, if the predetermined stop time has elapsed, operating the cold temperature switching valve, if the predetermined time has not elapsed, By ending the process, even when the power is turned on, when it is turned on again immediately after stopping, it is possible to judge the operation of the cold temperature switching valve by the predetermined stop time by the stop time storage means and prevent abnormal operation It becomes.

(Embodiment 1)
FIG. 1 is a refrigerant circuit diagram of a vending machine according to Embodiment 1 of the present invention.

  FIG. 2 is a functional block diagram of the vending machine according to the embodiment. FIG. 3 is a flowchart showing the operation of the vending machine according to the embodiment.

  In FIG. 1 and FIG. 2, a hot / cold switching chamber 1, a cold dedicated chamber 2, a storage chamber composed of a second cold dedicated chamber 3, a cooling / heating compressor 34, and a hot / cold switching chamber 1 are provided. A heat pump system comprising an installed indoor heat exchanger 30, an outdoor heat exchanger 31 installed outside the storage room, and a cold / cold switching valve 32, which exclusively heats the hot / cold switching chamber 1, and a heat pump In order to complement the heating capability of the system, an auxiliary heater 16 that is installed on the leeward side of the indoor heat exchanger 30 and has a heating capability substantially equal to the maximum heating capability of the heat pump system, and indoor heat The air heated by the exchanger 30 and the auxiliary heater 16 is blown to circulate in the hot / cold switching chamber 1 and the indoor temperature of the hot / cold switching chamber 1 is measured. A room temperature sensor 36, a cooling / temperature switching means 101 for switching between cooling / heating operations, an auxiliary heater 16, a cooling / temperature switching valve 32, a cooling / heating compressor 34, a heating fan 35, and an indoor temperature sensor 36 It is controlled by an arithmetic control unit 100a connected to the cold / temperature switching means 101.

  With respect to the vending machine configured as described above, the operation and action of the arithmetic control unit 100a will be described below with reference to the flowchart of FIG.

  First, it is confirmed whether the cooling / warming setting switching has been performed by the cooling / warming switching means 101 (STEP 1). If the cooling / warming setting has not been switched, the process is terminated. When the setting of cooling / warming is switched, the heat pump system and the auxiliary heater 16 are stopped (STEP 2). It is confirmed whether the time necessary for balancing the system internal pressure has elapsed (STEP 3). If the predetermined time required for balancing the system internal pressure has not elapsed, the process is terminated. When a predetermined time required for balancing the system internal pressure has elapsed, the cooling / warming switching valve 32 is operated to switch the cooling / heating operation (STEP 4), and then the heat pump system and the auxiliary heater 16 are switched on. Operate (STEP 5). It is confirmed whether a predetermined time has elapsed due to the cooling / heating operation (STEP 6).

  If the predetermined time has not elapsed, the process is terminated. If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been reached (STEP 7). If the predetermined temperature has been reached, the heat pump system and the auxiliary heater 16 are stopped (STEP 8), and the setting switching of the cooling / heating is completed (STEP 9). When the predetermined temperature has not been reached, the operation is restarted from STEP2.

  As described above, in the present embodiment, the vending machine having a hot / cold switching chamber for storing products includes a compressor, an outdoor heat exchanger, a cold / cold switching valve, and an indoor heat exchanger, which A heat pump system for heating or cooling the hot / cold switching chamber using a heater, a heater as a heating source for heating the hot / cold switching chamber, an indoor temperature sensor for detecting an indoor temperature, and an outside air temperature. When the cooling / warming setting is switched, the heat pump system and the heater are stopped, and after waiting for a predetermined time until the system pressure is balanced, the cooling / cooling switching valve is switched. In the vending machine that operates, if the operation of the cooling / cooling switching valve is not performed normally, the cooling / cooling switching valve is operated until the system pressure is balanced. By repeating over operation, when the cold switching is not performed normally, by system pressure makes a switching operation of the cold switching valve until balance, it is possible to prevent abnormal operation.

(Embodiment 2)
FIG. 4 is a functional block diagram of the vending machine according to the second embodiment of the present invention. FIG. 5 is a flowchart showing the operation of the vending machine according to the embodiment.

  In FIG. 4, the number setting means 102 is connected to the calculation control unit 100 b and is for setting in advance the number of times that the switching operation of the cold / cold switching valve is repeated until the system internal pressure is balanced.

  In the present embodiment, the vending machine according to the first embodiment is further provided with number setting means 102 for presetting the number of times the switching operation of the cold / warm switching valve is repeated until the system internal pressure is balanced. is there.

  With respect to the vending machine configured as described above, the operation and action of the arithmetic control unit 100b will be described below with reference to the flowchart of FIG.

  First, it is confirmed whether the cooling / warming setting switching has been performed by the cooling / warming switching means 101 (STEP 1). If the cooling / warming setting has not been switched, the process is terminated. When the setting of cooling / warming is switched, the heat pump system and the auxiliary heater 16 are stopped (STEP 2). It is confirmed whether the time necessary for balancing the system internal pressure has elapsed (STEP 3).

  If the predetermined time required for balancing the system internal pressure has not elapsed, the process is terminated. When a predetermined time required for balancing the system internal pressure has elapsed, the cooling / warming switching valve 32 is operated to switch the cooling / heating operation (STEP 4), and then the heat pump system and the auxiliary heater 16 are switched on. Operate (STEP 5). It is confirmed whether a predetermined time has elapsed due to the cooling / heating operation (STEP 6). If the predetermined time has not elapsed, the process is terminated. If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been reached (STEP 7).

  If the predetermined temperature has been reached, the heat pump system and the auxiliary heater 16 are stopped (STEP 8), and the setting switching of the cooling / heating is completed (STEP 9). If the predetermined temperature has not been reached, it is confirmed whether it is less than the predetermined number of times set by the number-of-times setting means 102 (STEP 10). When the number is less than the predetermined number, the operation is restarted from STEP2. If it is greater than the predetermined number of times, the heat pump system and the auxiliary heater 16 are stopped (STEP 11). After completion of STEP 11, cooling / warming setting switching is completed as a cold / warm switching valve abnormality (STEP 12).

  As described above, in the present embodiment, in addition to the invention described in the first embodiment, the number setting means for presetting the number of times of repeating the switching operation of the cold / warm switching valve until the system internal pressure is balanced. When the operation of the cooling / temperature switching valve is not normally performed, the cooling / temperature switching is not normally performed due to the balance of the pressure in the system by performing the operation of the cooling / temperature switching valve a predetermined number of times. Abnormal operation can be prevented, and an operation protection operation can be performed when cold temperature switching is not performed due to an abnormality of the cold temperature switching valve.

(Embodiment 3)
FIG. 6 is a functional block diagram of the vending machine according to the third embodiment of the present invention. FIG. 7 is a flowchart showing the operation of the vending machine according to the embodiment.

  In FIG. 6, a timer means 103 is connected to the calculation control unit 100c, counts time, and outputs it to the calculation control unit 100c.

  In the present embodiment, the vending machine according to the second embodiment is further provided with timer means 103 that counts time and outputs it to the arithmetic control unit.

  Regarding the vending machine configured as described above, the operation and action of the arithmetic control unit 100c will be described below with reference to the flowchart of FIG.

  First, it is confirmed whether the cooling / warming setting switching has been performed by the cooling / warming switching means 101 (STEP 1). If the cooling / warming setting has not been switched, the process is terminated. When the setting of cooling / warming is switched, the heat pump system and the auxiliary heater 16 are stopped (STEP 2). It is confirmed whether the time necessary for balancing the system internal pressure has elapsed (STEP 3).

  If the predetermined time required for balancing the system internal pressure has not elapsed, the process is terminated. When a predetermined time required for balancing the system internal pressure has elapsed, the cooling / warming switching valve 32 is operated to switch the cooling / heating operation (STEP 4), and then the heat pump system and the auxiliary heater 16 are switched on. Operate (STEP 5). It is confirmed whether a predetermined time has elapsed due to the cooling / heating operation (STEP 6). If the predetermined time has not elapsed, the process is terminated. If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been reached (STEP 7).

  If the predetermined temperature has been reached, the heat pump system and the auxiliary heater 16 are stopped (STEP 8), and the setting switching of the cooling / heating is completed (STEP 9). If the predetermined temperature has not been reached, it is confirmed whether it is less than the predetermined number of times set by the number of times setting means 102 (STEP 13). If the number is less than the predetermined number, the operation is restarted from STEP2. When the number of times is equal to or greater than the predetermined number of times, the heat pump system and the auxiliary heater 16 are stopped (STEP 14), and then the operation of the heat pump system is performed (STEP 15).

  After the operation of the heat pump system, it is confirmed whether the time counted by the timer means 103 has passed a predetermined time (STEP 16). If the predetermined time has not elapsed, the process is terminated. If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been predicted in advance (STEP 17). When the temperature reaches the predetermined temperature, it is confirmed whether or not the predetermined number of times is set by the number setting means 102 (STEP 18). If the number is less than the predetermined number, the operation is restarted from STEP2. When the predetermined temperature is not reached in STEP 17 or when the predetermined temperature is exceeded in STEP 18, the heat pump system is stopped and the auxiliary heater 16 is operated (STEP 19). After completion of STEP 19, the cooling / warming setting switching is completed as the cold / warm switching valve abnormality (STEP 12).

  As described above, in this embodiment, the invention described in Embodiment 2 is further provided with timer means for counting time, and after the operation of the cold / warm switching valve is performed a set number of times, the timer means counts the time. If the operation of the cooling / cooling switching valve is not performed normally even after a predetermined time has elapsed, the heat pump system is stopped when cooling is set, and the heat pump system is stopped when heating is set. However, by heating only with the heater, it is possible to prevent abnormal operation when the cooling / cooling switching is not normally performed due to the balance of the pressure in the system, and the cooling / cooling switching is performed due to the cooling / cooling switching valve abnormality. Operation protection operation is possible when there is no operation.

(Embodiment 4)
FIG. 8 is a functional block diagram of the vending machine according to the fourth embodiment of the present invention. FIG. 9 is a flowchart showing the operation of the vending machine according to the embodiment.

  In FIG. 8, a power-on detection means 104 is connected to the arithmetic control unit 100d and detects that the power is on.

  In the present embodiment, the vending machine according to the third embodiment is further provided with power-on detection means 104 for detecting that the power is being turned on.

  With regard to the vending machine configured as described above, the operation and action of the arithmetic control unit 100d will be described below with reference to the flowchart of FIG.

  First, the power-on detection means 104 confirms whether the power is on (STEP 20). When the power is turned on, the operation of STEP4 is performed. When the power is not turned on, it is confirmed whether or not the cooling / warming setting switching has been performed by the cooling / warming switching means 101 (STEP 1). If the cooling / warming setting has not been switched, the process is terminated.

  When the setting of cooling / warming is switched, the heat pump system and the auxiliary heater 16 are stopped (STEP 2). It is confirmed whether the time necessary for balancing the system internal pressure has elapsed (STEP 3). If the predetermined time required for balancing the system internal pressure has not elapsed, the process is terminated.

  When a predetermined time required for balancing the system internal pressure has elapsed, the cooling / warming switching valve 32 is operated to switch the cooling / heating operation (STEP 4), and then the heat pump system and the auxiliary heater 16 are switched on. Operate (STEP 5). It is confirmed whether a predetermined time has elapsed due to the cooling / heating operation (STEP 6). If the predetermined time has not elapsed, the process is terminated.

  If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been reached (STEP 7). If the predetermined temperature has been reached, the heat pump system and the auxiliary heater 16 are stopped (STEP 8), and the setting switching of the cooling / heating is completed (STEP 9). If the predetermined temperature has not been reached, it is confirmed whether or not the power is turned on (STEP 21). When the power is turned on, the operation of STEP 19 is performed. If it is not when the power is turned on, it is confirmed whether it is less than the predetermined number set by the number setting means 102 (STEP 13).

  If the number is less than the predetermined number, the operation is restarted from STEP2. When the number of times is equal to or greater than the predetermined number of times, the heat pump system and the auxiliary heater 16 are stopped (STEP 14), and then the operation of the heat pump system is performed (STEP 15). After the operation of the heat pump system, it is confirmed whether the time counted by the timer means 103 has passed a predetermined time (STEP 16). If the predetermined time has not elapsed, the process is terminated.

  If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been predicted in advance (STEP 17). When the temperature reaches the predetermined temperature, it is confirmed whether or not the predetermined number of times is set by the number setting means 102 (STEP 18). If the number is less than the predetermined number, the operation is restarted from STEP2. When the predetermined temperature is not reached in STEP 17 or when the predetermined temperature is exceeded in STEP 18, the heat pump system is stopped and the auxiliary heater 16 is operated (STEP 19). After completion of STEP 19, the cooling / warming setting switching is completed as the cold / warm switching valve abnormality (STEP 12).

  As described above, in the present embodiment, the invention described in the third embodiment is further provided with power-on detection means for detecting when the power is turned on, and cooling / warming is performed when the power is turned on. When setting switching is performed, after the operation of the cooling / temperature switching valve is performed only once, the operation of the cooling / temperature switching valve is normally performed even if the time counted by the timer means passes a predetermined time. If not, the heat pump system is stopped for the cooling setting, and if the heating setting is set, the heat pump system is stopped and heating is performed only by the heater, thereby balancing the pressure in the system as when the power is turned on. When there is no need to take the operation, it is possible to execute the operation protection operation in a short time when the cooling / temperature switching is not performed due to the abnormality of the cooling / temperature switching valve.

(Embodiment 5)
FIG. 10 is a functional block diagram of the vending machine according to the fifth embodiment of the present invention. FIG. 11 is a flowchart showing the operation of the vending machine according to the embodiment.

  In FIG. 10, the stop time storage means 105 is connected to the calculation control unit 100e and stores the stop time of the heat pump system.

  In the present embodiment, the vending machine according to the fourth embodiment is further provided with stop time storage means 105 for storing the stop time of the heat pump system.

  With respect to the vending machine configured as described above, the operation and action of the arithmetic control unit 100e will be described below with reference to the flowchart of FIG.

  First, the power-on detection means 104 confirms whether the power is on (STEP 20). When the power is turned on, it is confirmed whether the predetermined stop time stored in the stop time storage means 105 has elapsed (STEP 22). If the predetermined stop time has elapsed, the operation of STEP4 is performed. When the power is not turned on or when the predetermined stop time has not elapsed, it is confirmed whether or not the cooling / warming setting switching has been performed by the cooling / warming switching means 101 (STEP 1). If the cooling / warming setting has not been switched, the process is terminated. When the setting of cooling / warming is switched, the heat pump system and the auxiliary heater 16 are stopped (STEP 2). It is confirmed whether the time necessary for balancing the system internal pressure has elapsed (STEP 3).

  If the predetermined time required for balancing the system internal pressure has not elapsed, the process is terminated. When a predetermined time required for balancing the system internal pressure has elapsed, the cooling / warming switching valve 32 is operated to switch the cooling / heating operation (STEP 4), and then the heat pump system and the auxiliary heater 16 are switched on. Operate (STEP 5). It is confirmed whether a predetermined time has elapsed due to the cooling / heating operation (STEP 6).

  If the predetermined time has not elapsed, the process is terminated. If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been reached (STEP 7). If the predetermined temperature has been reached, the heat pump system and the auxiliary heater 16 are stopped (STEP 8), and the setting switching of the cooling / heating is completed (STEP 9). If the predetermined temperature has not been reached, it is confirmed whether or not the power is turned on (STEP 21). When the power is turned on, the operation of STEP 19 is performed.

  If it is not when the power is turned on, it is confirmed whether it is less than the predetermined number set by the number setting means 102 (STEP 13). If the number is less than the predetermined number, the operation is restarted from STEP2. When the number of times is equal to or greater than the predetermined number of times, the heat pump system and the auxiliary heater 16 are stopped (STEP 14), and then the operation of the heat pump system is performed (STEP 15). After the operation of the heat pump system, it is confirmed whether the time counted by the timer means 103 has passed a predetermined time (STEP 16).

  If the predetermined time has not elapsed, the process is terminated. If the predetermined time has elapsed, it is confirmed whether or not the predetermined temperature has been predicted in advance (STEP 17). When the temperature reaches the predetermined temperature, it is confirmed whether or not the predetermined number of times is set by the number setting means 102 (STEP 18). If the number is less than the predetermined number, the operation is restarted from STEP2. When the predetermined temperature is not reached in STEP 17 or when the predetermined temperature is exceeded in STEP 18, the heat pump system is stopped and the auxiliary heater 16 is operated (STEP 19). After completion of STEP 19, the cooling / warming setting switching is completed as the cold / warm switching valve abnormality (STEP 12).

  As described above, in this embodiment, the invention described in Embodiment 4 is further provided with a stop time storage means for storing the stop time of the heat pump system. It is determined whether or not the predetermined stop time stored by the time storage means has elapsed. If the predetermined stop time has elapsed, the cooling / temperature switching valve is operated. If the predetermined time has not elapsed, the process is terminated. Thus, even when the power is turned on, when the power is turned on again immediately after the stop, it is possible to determine the operation of the cold temperature switching valve based on the predetermined stop time by the stop time storage means and prevent abnormal operation.

  As described above, the heat pump system of the vending machine according to the present invention includes a heater having a heating capability equal to or higher than that of the heat pump system, and the heating capability of the heat pump system so as not to greatly exceed the load at the time of stability. By adjusting, it is possible to suppress fluctuations in the room temperature due to excessive temperature rise of the condenser temperature, so it is possible to add small capacity such as a showcase that stores hot and cold beverages at the same time and a cup vending machine that supplies a small amount of hot water. It can also be applied to applications that require labor savings in thermal energy.

Cooling circuit diagram of automatic vending machine in Embodiment 1 of the present invention Functional block diagram of the vending machine of the embodiment A flowchart showing the operation of the vending machine of the embodiment Functional block diagram of the vending machine in the second embodiment of the present invention A flowchart showing the operation of the vending machine of the embodiment Functional block diagram of the vending machine in Embodiment 3 of the present invention A flowchart showing the operation of the vending machine of the embodiment Functional block diagram of vending machine according to Embodiment 4 of the present invention A flowchart showing the operation of the vending machine of the embodiment Functional block diagram of the vending machine in the fifth embodiment of the present invention A flowchart showing the operation of the vending machine of the embodiment Cooling circuit diagram of conventional vending machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot / cold switching room 16 Auxiliary heater 30 Indoor heat exchanger 31 Outdoor heat exchanger 32 Cooling temperature switching valve 34 Cooling warming compressor 35 Heating fan 36 Indoor temperature sensor 100a, 100b, 100c, 100d, 100e Calculation control Numeral 101 Cold / temperature switching means 102 Count setting means 103 Timer means 104 Power-on detection means 105 Stop time storage means

Claims (5)

  A vending machine having a hot / cold switching chamber for storing products includes a compressor, an outdoor heat exchanger, a cold / cold switching valve, and an indoor heat exchanger, and uses the heat of the atmosphere to add the hot / cold switching chamber. A heat pump system for heating or cooling, a heater as a heating source for heating the hot / cold switching chamber, an indoor temperature sensor for detecting the indoor temperature, and an outdoor temperature sensor for detecting the outdoor temperature, In the vending machine that switches the cooling / cooling switching valve after stopping the heat pump system and the heater and waiting for a predetermined time until the pressure in the system is balanced, when the setting switching of heating is performed, When the operation of the valve is not performed normally, the switching operation of the cold / cold switching valve is repeatedly performed until the pressure in the system is balanced. A control system for an automatic vending machine.   A number of times setting means for presetting the number of times the switching operation of the cooling / temperature switching valve is repeated until the pressure in the system is balanced, and the number of times set in advance if the operation of the cooling / temperature switching valve is not performed normally The control device for a vending machine according to claim 1, wherein the operation of the cold / cold switching valve is performed only.   A timer means for counting time, and after the predetermined time has elapsed after the operation of the cooling / temperature switching valve has been performed a set number of times, the operation of the cooling / temperature switching valve is normally performed. 3. The vending machine according to claim 2, wherein the heat pump system is stopped when cooling is set, and the heat pump system is stopped when heating is set, and heating is performed only with a heater. Control device.   Power-on detection means for detecting when the power is turned on, and when the cooling / warming setting is switched at the time of power-on, the cooling / temperature switching valve without waiting for a predetermined time until balancing After performing the operation only once, if the operation of the cold / cold switching valve is not performed normally even if the time counted by the timer means has passed a predetermined time, the heat pump system in the case of cooling setting The control device for a vending machine according to claim 3, wherein the heat pump system is stopped and heating is performed only with a heater when the heating is set.   A stop time storage means for storing the stop time of the heat pump system is provided. When the power is turned on, it is determined whether or not the predetermined stop time stored by the stop time storage means has elapsed, and the predetermined stop time 5. The control device for a vending machine according to claim 4, wherein when the predetermined time has elapsed, the cooling / temperature switching valve is operated, and when the predetermined time has not elapsed, the processing is terminated.

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