JP5444815B2 - Vending machine control equipment - Google Patents

Description

  The present invention relates to a control device for a cooling system of a vending machine.

  Conventionally, this type of vending machine reduces the load applied to the compressor by performing on / off control of a solenoid valve (see, for example, Patent Document 1).

  FIG. 11 shows a cooling device and a control device of a conventional vending machine described in Patent Document 1. As shown in FIG. 11, the cooling device 50 includes a compressor 51, a condenser (condenser) 52, a distributor 53, two capillary tubes 54A and 54B, and two electromagnetic valves 55A and 55B. Evaporators (evaporators) 56A and 56B are connected to the solenoid valves 55A and 55B via capillary tubes 54A and 54B, respectively. Each of the evaporators 56 </ b> A and 56 </ b> B is connected to the compressor 51 through a refrigerant pipe and an accumulator 65. In addition, a control program and control data for controlling the on / off states of the electromagnetic valves 55A and 55B are stored, and a controller 58 for executing control is provided.

  The operation of the vending machine control apparatus configured as described above will be described below. First, the ambient temperature of the vending machine or a temperature based on the ambient temperature is detected and output to the controller 58 as temperature data. The controller 58 closes at least one solenoid valve (for example, the solenoid valve 55A) and closes at least one solenoid valve (for example, the solenoid valve 55B) when the ambient temperature becomes equal to or higher than a predetermined temperature based on the temperature data. Open. As described above, the evaporator 56A connected to the electromagnetic valve 55A in the closed state is in a quiescent state, so that the load on the compressor 51 can be reduced and connected to the electromagnetic valve 55B in the open state. The evaporator 56B continues the cooling operation.

JP-A-8-212448

  However, in the conventional configuration described above, a timing for temporarily stopping cooling occurs in a state where the temperature of the product or the warehouse is high, such as at the time of initial pull-down. When the cooling is stopped, the inside temperature rises, so that the evaporation temperature also rises immediately after the cooling is started again. There is a characteristic of the compressor that the shaft power of the compressor (compressor 11) increases as the evaporation temperature rises. As the shaft power of the compressor increases, the load on the compressor increases, the overload protection device works, and the compressor is forced to stop.

  The present invention solves the above-mentioned conventional problems, and in a state where the temperature of the product and the warehouse is high such as at the time of initial pull-down, the load on the compressor is reduced by reducing the increase in the evaporation temperature, and the compressor is forcibly stopped. The purpose is to prevent.

  Furthermore, the initial pull-down time (the time required for cooling the product to a predetermined temperature) is shortened, and the object is to deal with mass sales even when the summer is hot.

In order to solve the above conventional problems, a control device for a vending machine according to the present invention includes a compressor for compressing a refrigerant, a condenser for condensing the refrigerant, a three-way valve, and an interior A. An evaporator for cooling and an evaporator for cooling the interior B , the three-way valve,
A flow path for cooling both the interior A and the interior B by flowing the condensed refrigerant in the order of an evaporator for cooling the interior B and an evaporator for cooling the interior A; In the vending machine which can be switched to the flow path for cooling the inside A by flowing it through the evaporator for cooling the inside A without flowing through the evaporator for cooling the inside B When the inside A and the inside B are cooled under the condition that the temperature inside the inside A and the inside B and the outside air temperature are both equal to or higher than a predetermined temperature, the inside B is preferentially cooled. The three-way valve causes the refrigerant condensed in the condenser to flow in the order of an evaporator for cooling the inside B and an evaporator for cooling the inside A, and the inside A and the inside Use a flow path that cools both the interior B and start forced cooling operation at high load and forced cooling operation The elapsed time measurement after the start is started, and until both the interior A and the interior B reach the cooling stop temperature, or until a predetermined time elapses after the forced cooling operation is started. When the forced cooling operation is continued and both the interior A and the interior B reach the cooling stop temperature by a predetermined time after the forced cooling operation is started, the interior A and the interior The forced cooling operation is interrupted until one of the inside B reaches the cooling operation temperature, and if either one of the inside A or the inside B reaches the cooling operation temperature, the forced cooling operation is resumed, The forced cooling operation is terminated when a predetermined time has elapsed from the start of the forced cooling operation, and the priority operation for preferentially cooling the interior B based on the cooling stop temperature that is lowered by a predetermined temperature from the normal operation is forced Same refrigerant flow path as in cooling operation It is to carry out a predetermined period of time.

As a result, the temperatures in the storage A and the storage B and the external temperatures in the storage A and the storage B are both predetermined and the temperatures in the storage A and the storage B are both predetermined. When the inside A and the inside B are cooled under the condition above the temperature, but the inside B is preferentially cooled, the load on the compressor is reduced to prevent the compressor from being forcibly stopped. the can shorten the time required to cool to a predetermined temperature, Ru can correspond to mass market even when summer of hot.

The control device of the vending machine according to the present invention cools the inside A and the inside B under the condition that the temperature inside the inside A and the inside B and the outside temperature are both equal to or higher than the predetermined temperature, but the inside B is prioritized. When cooling the product, it is possible to reduce the time it takes to cool the product to a predetermined temperature while reducing the load on the compressor and preventing the forced stop of the compressor. Can also handle mass sales .

1 is a schematic configuration diagram inside a vending machine according to Embodiment 1 of the present invention. 1 is a schematic configuration diagram of a cooling system for a vending machine according to Embodiment 1 of the present invention. Configuration diagram of control device for vending machine according to Embodiments 1 and 2 of the present invention The flowchart which shows operation | movement of the control apparatus of the vending machine in Embodiment 1 of this invention. The flowchart which shows operation | movement of the control apparatus of the vending machine in Embodiment 2 of this invention. Configuration diagram of control device of vending machine in Embodiments 3 to 4 of the present invention Configuration diagram of control device of vending machine in Embodiments 3 to 4 of the present invention Configuration diagram of state storage unit in embodiments 3 to 4 of the present invention The flowchart which shows operation | movement of the control apparatus of the vending machine in Embodiment 3 of this invention. The flowchart which shows operation | movement of the control apparatus of the vending machine in Embodiment 4 of this invention. The figure which shows the cooling device and control apparatus of the cooling system of the conventional vending machine

The invention according to claim 1 includes a compressor for compressing the refrigerant, a condenser for condensing the refrigerant, a three-way valve, an evaporator for cooling the inside A , and the inside B. An evaporator for cooling , and the refrigerant condensed in the condenser by the three-way valve in the order of an evaporator for cooling the inside B and an evaporator for cooling the inside A And flow to the evaporator for cooling the interior A without flowing to the flow path for cooling both the interior A and the interior B and the evaporator for cooling the interior B. In the vending machine that can be switched to a flow path for cooling the interior A, the temperature in the interior A and the interior B and the outside air temperature are both equal to or higher than a predetermined temperature, and the interior A and When cooling the inside B but preferentially cooling the inside B, the three-way valve causes the condenser to The condensed refrigerant is flowed in the order of an evaporator for cooling the interior B and an evaporator for cooling the interior A to form a flow path for cooling both the interior A and the interior B. Starting the forced cooling operation at the time of high load and starting the elapsed time measurement after starting the forced cooling operation until both of the interior A and the interior B reach the cooling stop temperature, or The forced cooling operation is continued until a predetermined time elapses after the forced cooling operation is started, and both the inside A and the inside B are passed until the predetermined time elapses after the forced cooling operation is started. When the cooling stop temperature is reached, the forced cooling operation is interrupted until either one of the inside A or the inside B reaches the cooling operation temperature, and either the inside A or the inside B When the cooling temperature reaches the cooling operating temperature, the forced cooling operation is restarted. The forced cooling operation is terminated when a predetermined time has elapsed from the start of the forced cooling operation, and the priority operation for preferentially cooling the interior B based on the cooling stop temperature that is lowered by a predetermined temperature from the normal operation is forced are those carried out in the same refrigerant flow path as in the cooling operation a predetermined time, at a temperature and also the outside temperature is either equal to or higher than the predetermined temperature of the internal a and the internal B, the storage room a and the internal B-compartment When both the temperature of A and the temperature inside B and the outside air temperature are higher than the predetermined temperature, the inside A and the inside B are cooled, but when the inside B is preferentially cooled , the load on the compressor is reduced. reduce and, while preventing the forced stop of the compressor, product can shorten the time required to cool to a predetermined temperature, may correspond to the mass market even when summer of hot.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram inside a vending machine according to Embodiment 1 of the present invention. FIG. 2 shows a schematic configuration diagram of the cooling system of the vending machine in the first embodiment of the present invention. FIG. 3 is a configuration diagram of the control device for the vending machine according to the first embodiment of the present invention. FIG. 4 is a flowchart showing the operation of the control device for the vending machine according to Embodiment 1 of the present invention.

  In FIG. 1, a vending machine 1 includes a warehouse A and a warehouse B partitioned by a heat insulating partition wall 2, and each has a product storage column 3 a and a product storage column 3 b. Further, each product storage column 3a and each product storage column 3b have a column temperature measuring sensor 91a and a column temperature measuring sensor 91b for measuring the temperature, and the outside air temperature for measuring the ambient temperature of the vending machine 1 A measurement sensor 91c is included. And it comprises a controller 7 for controlling the whole vending machine, a cooling device such as a compressor, and a mechanism section 6 incorporating a product discharge mechanism and the like.

  2, the cooling system includes a compressor 92b, a condenser (condenser) 12, a three-way valve 92a, capillary tubes 14a and 14b, and evaporators 16a and 16b. One of the three-way valves 92a includes a capillary tube 14b and an evaporator. A refrigerant flow path connected to 16b and the evaporator 16a is formed, and the other of the three-way valves 92a forms a refrigerant flow path connected to the capillary tube 14a and the evaporator 16a, and is selectively controlled.

  In FIG. 3, the main control unit 200 of the control device includes a forced operation control unit 110 for forcibly cooling the inside of the specified chamber or the arbitrary chamber as the evaporating temperature rise reducing means 100, and the inside of the specified chamber or the arbitrary chamber. And a control temperature adjusting unit 120 for adjusting the control temperature. The temperature detection unit 91 includes a high load state determination unit 100a for determining a load state applied to the compressor 92b, a column temperature measurement sensor 91a, a column temperature measurement sensor 91b, and an outside air temperature measurement sensor 91c. And a load control unit 92 for controlling the three-way valve 92a and the compressor 92b.

  The forced operation control unit 110 as the evaporating temperature rise reducing unit 100 according to Embodiment 1 of the present invention includes a specific internal storage unit 111a for storing the inside of the specific compartment to be forcibly cooled, and forcibly cools the inside of the specific compartment. For this reason, the forced internal combustion controller 111 is used. Furthermore, an optional internal selection unit 112a for selecting an optional internal for forced cooling is provided, and an optional internal forced operation control unit 112 for forcibly cooling the optional internal is provided.

  The operation and action of the vending machine control apparatus configured as described above will be described below.

  In FIG. 4, first, when all of the column temperature measuring sensor 91a, the column temperature measuring sensor 91b, and the outside air temperature measuring sensor 91c are above a predetermined temperature (for example, 30 ° C.), the high load state determination unit 100a determines that the load is high. The following operations are performed.

  First, the inside of the storage stored in the specific storage section 111a is confirmed, and when the storage A and storage B correspond (step 11), cooling of the storage A and storage B is started (step 12). . At this time, the three-way valve 92a is opened so that the refrigerant flows in the interior A and the interior B. Specifically, a refrigerant flow path that connects the three-way valve 92a to the capillary tube 14b, the evaporator 16b, and the evaporator 16a is formed. Then, it is assumed that the high load operation starts when the cooling of the inside A and the inside B starts, and the elapsed time is measured (step 13).

If the elapsed time is less than a predetermined time (for example, less than 5 hours from the start of high load operation), the cooling of the inside of the compartment A is continued even if the in-column A temperature measuring sensor 91a reaches the cooling stop temperature in step 14. (Step 15) Even if the in-column temperature measuring sensor 91b in the warehouse B reaches the cooling stop temperature in Step 16, the cooling of the interior B is continued (Step 17).

  When the in-column temperature measuring sensor 91a in the chamber A and the in-column temperature measuring sensor 91b in the chamber 2 reach the cooling stop temperature, the compressor 92b is stopped and the cooling is stopped (step 19). In step 20, the cooling is stopped until the column temperature measuring sensor 91a in the chamber A or the column temperature measuring sensor 91b in the chamber B reaches the cooling operation temperature, and if the cooling operation temperature is reached, the compressor 92b is moved. Then, cooling is started (step 21). Although cooling is stopped in step 19, in this case, since the load in the warehouse is reduced and there is no need to cool, there is no problem with stopping the cooling. That is, in the high load state in which the compressor 92b is operating, the cooling stop and start of either the inside A or the inside B are not repeated.

  When the elapsed time becomes equal to or longer than a predetermined time (for example, 5 hours or longer) in step 22, the control is returned to the normal control (step 23), and the process is terminated. In the normal control, for example, the cooling is stopped when the column temperature measuring sensor 91a reaches the cooling stop temperature, and the cooling is started when the column temperature measuring sensor 91a reaches the cooling operation temperature.

  Here, the forced operation control unit 110 may be the optional internal forced operation control unit 112 including the optional internal selection unit 112a for selecting the optional internal for forced cooling.

  In FIG. 4, when the temperature of the in-column temperature measuring sensor 91a is equal to or higher than a temperature of the in-column temperature measuring sensor 91b (for example, 5 ° C., but not limited to this), the optional storage The inside selection unit 112a selects the inside A and starts cooling the inside A. The cooling operation of the inside A is the same as that after step 13 and will not be described. When the inside B is less than a predetermined time (5 hours), the cooling is not started even when the operating temperature is reached.

  Note that although the column temperature measuring sensor 91a, the column temperature measuring sensor 91b, and the outside air temperature measuring sensor 91a are all set to 30 ° C. or higher as the determination conditions for the high load state, they are not limited to 30 ° C. The means is not limited to the combination of these temperature measuring sensors.

  Moreover, the number in a store | warehouse | chamber is not limited to 2, It corresponds also in 3 or more. In addition, although the predetermined time has elapsed in step 18, the time is not limited, and the determination may be made based on the temperature detected by the temperature measurement sensor. Furthermore, the predetermined time is not limited to 5 hours.

  The means for flowing the refrigerant to the evaporator 16a or the evaporator 16b is not limited to the three-way valve 92a.

  As described above, in the present embodiment, the forced operation control unit 110 (evaporation temperature rise reducing means 100) includes the specific internal storage unit 111a for storing the specific internal for forced cooling, and the specific internal storage By using the specified internal forced operation control unit 111 for forcibly cooling the engine, it is possible to reduce the load applied to the compressor 92b by reducing the increase in evaporation temperature at the time of initial pull-down in a high load state. A forced stop can be prevented.

  Moreover, the forced operation control part 110 (evaporation temperature rise reduction means 100) is provided with the arbitrary warehouse selection part 112a for selecting the inside of the arbitrary warehouse to forcibly cool, and the arbitrary warehouse for forcibly cooling the inside of an arbitrary warehouse By using the internal forced operation control unit 112, it is possible to reduce the load applied to the compressor 92b by reducing the increase in the evaporation temperature and prevent the compressor 92b from being forcibly stopped during the initial pull-down in a high load state. Furthermore, the initial pull-down time can be shortened because the interior of the cabinet having a high temperature is preferentially cooled.

(Embodiment 2)
FIG. 3 is a configuration diagram of the control device for the vending machine according to the second embodiment of the present invention. FIG. 5 is a flowchart showing the operation of the control device of the vending machine in the second embodiment of the present invention. Detailed description of the same configuration as that of the first embodiment will be omitted.

  In FIG. 3, the control temperature adjustment unit 120 (evaporation temperature rise reduction means 100) according to the second embodiment of the present invention includes a specific internal storage unit 121a for storing the specific internal to adjust the control temperature. The specific internal control temperature adjustment unit 121 is used to adjust the internal control temperature. In addition, the control temperature adjusting unit 120 (evaporation temperature rise reducing means 100) includes an optional internal selection unit 122a for selecting an optional internal for adjusting the control temperature, and adjusts the control temperature in the optional internal The optional internal control temperature adjustment unit 122 is used.

  The operation and action of the vending machine control apparatus configured as described above will be described below.

  In FIG. 5, first, when the column temperature measurement sensor 91a, the column temperature measurement sensor 91b, and the outside air temperature measurement sensor 91c are all 30 ° C. or higher, the high load state determination unit 100a determines that the load is high and performs the following operation. Do.

  First, the interior stored in the specific interior storage unit 121a is confirmed, and when the interior A and the interior B correspond (step 11), cooling of the interior A and the interior B is started (step 12). . At this time, the three-way valve 92a is opened so that the refrigerant flows in the interior A and the interior B. Specifically, a refrigerant flow path that connects the three-way valve 92a to the capillary tube 14b, the evaporator 16b, and the evaporator 16a is formed. Then, it is assumed that the high load operation starts when the cooling of the inside A and the inside B starts, and the elapsed time is measured (step 13).

  When the elapsed time is less than a predetermined time (for example, less than 5 hours from the start of the high load operation), the cooling stop temperatures of the inside A and the inside B are shifted down (step 21). For example, when the cooling stop temperatures of the inside A and the inside B are 1 ° C. and 2 ° C., respectively, the temperature is shifted down 5 ° C. to be −4 ° C. and −3 ° C. The cooling stop temperature is to stop cooling when the in-column temperature measuring sensor 91a or the in-column temperature measuring sensor 91b reaches this temperature.

  If the elapsed time is equal to or longer than a predetermined time (for example, 5 hours) in step 18, the shift down of the cooling stop temperature of the interior A and the interior B is canceled and restored (interior A: −4 ° C. → 1 ° C., inside B: −3 ° C. → 2 ° C.) (step 22).

  Here, the control temperature adjustment unit 110 is provided with an optional internal control unit 122a for selecting an optional internal control unit 122a for adjusting the control temperature, and an optional internal control temperature adjustment unit for adjusting the control temperature in the optional storage It is good also as 122.

  The operation is performed when the temperature of the in-column temperature measurement sensor 91a is equal to or higher than the temperature of the in-column temperature measurement sensor 91b (for example, 5 ° C., but not limited thereto). Selects the inside A, shifts down the cooling stop temperature in the inside A by −5 ° C., and shifts down the cooling stop temperature in the inside B by −3 ° C. The other operations are the same as those shown in FIG.

  The downshifting temperature is not limited to −5 ° C. or −3 ° C., and can be arbitrarily set. The means for flowing the refrigerant to the evaporator 16a or the evaporator 16b is not limited to the three-way valve 92a.

  As described above, in the present embodiment, the control temperature adjustment unit 120 (evaporation temperature rise reduction means 100) includes the specific storage unit 121a for storing the specific storage for adjusting the control temperature, and is specified. By using the specific internal control temperature adjustment unit 121 for adjusting the internal control temperature, the load applied to the compressor 92b is reduced by reducing the increase in evaporation temperature at the time of initial pull-down in a high load state. The forced stop of 92b can be prevented. Moreover, since control temperature can be adjusted, control suitable for each vending machine can be implemented.

  In addition, the control temperature adjusting unit 120 (evaporation temperature rise reducing means 100) includes an optional internal selection unit 122a for selecting an optional internal for adjusting the control temperature, and adjusts the control temperature in the optional internal By using the optional internal control temperature adjustment unit 122, the load applied to the compressor 92b can be reduced by reducing the increase in the evaporation temperature during initial pull-down in a high load state, and the forced stop of the compressor 92b can be prevented. . Moreover, since control temperature can be adjusted, control suitable for each vending machine can be implemented. Furthermore, the initial pull-down time can be shortened by lengthening the cooling time in the high temperature chamber.

(Embodiment 3)
6 and 7 are configuration diagrams of the control device of the vending machine according to the third embodiment of the present invention. FIG. 8 is a configuration diagram of the state storage unit according to Embodiment 3 of the present invention. FIG. 9 is a flowchart showing the operation of the control device for the vending machine in the third embodiment of the present invention. Detailed description of the same configuration as that of the first embodiment will be omitted.

  In FIG. 6, the main control unit 400 of the control device includes, as the initial pull-down shortening means 300, a priority operation control unit 310 for preferentially cooling the inside of the specific warehouse or the inside of the arbitrary warehouse, And an initial pull-down control temperature adjusting unit 320 for adjusting the initial pull-down control temperature.

  The priority operation control unit 310 as the initial pull-down shortening unit 300 according to the third embodiment of the present invention includes a specific internal selection unit 311a for storing the specific internal to be preferentially cooled, and the specific internal is preferentially stored. The specific in-compartment preferential operation control unit 311 is used for cooling. Further, an optional internal selection unit 312a for selecting an optional internal chamber to be preferentially cooled is provided, and an optional internal priority operation control unit 312 for preferentially cooling the optional internal space is provided.

  In FIG. 7, the initial pull-down shortening means 300 determines the initial pull-down time after the operation of the evaporating temperature rise reducing means 100 for reducing the rise of the evaporating temperature when the vending machine 1 is operating in a high load state. A timer determination unit 301 for performing the operation, a refrigerant flow recognition unit 302 for recognizing which of the refrigerant flows through the evaporator 16a and the evaporator 16b, and the value of the secondary pressure of the capillary tube 14a and the capillary tube 14b, And a state storage unit 303 for storing the second initial pull-down time.

  The operation and action of the vending machine control apparatus configured as described above will be described below.

  In FIG. 9, first, after the operation of the evaporating temperature rise reducing means 100 is completed (step 31), an initial pull-down time is determined (step 32).

Here, the configuration of the state storage unit 303 will be described. Current status and each pattern name in the first row, capillary tube secondary pressure value in chamber A in the second row, capillary tube secondary pressure value in chamber B in the third row, second initial in the fourth row Stores the value of pull-down time. The current set value is stored in the first row, and the value of the second initial pull-down time corresponding to the secondary pressure of each capillary tube is stored in the second and subsequent rows.

  In step 32, the timer determination unit 301 reads the current values of the capillary tube secondary pressures in the storage A and the storage B in the state storage unit 303, and identifies which of the patterns corresponds to them. For example, when the value of the secondary pressure of the capillary tube 14a in the chamber A is 0.42 and the value of the secondary pressure of the capillary tube 14b in the chamber B is 0.49, it corresponds to the pattern A. The value (3) of the second initial pull-down time is set to the current second initial pull-down time value.

  Next, it is recognized whether a large amount of refrigerant has flowed into the evaporator 16a in the storage A or the evaporator 16b in the storage B (step 33). The refrigerant flow rate recognition unit 302 reads the current values of the capillary tube secondary pressures in the storage A and the storage B in the state storage unit 303 and compares the values. The capillary tube secondary pressure is a value indicating the difficulty of the refrigerant flow. The smaller the value, the larger the amount of refrigerant flowing. When the value of the secondary pressure of the capillary tube 14a in the chamber A is 0.42 and the value of the secondary pressure of the capillary tube 14b in the chamber B is 0.49, the chamber A <inside the chamber B and the refrigerant flow rate is , Evaporator 16a (inside A)> evaporator 16b (inside B). Therefore, the specific chamber to be preferentially cooled is stored in the specific chamber selection unit 311a as the chamber B.

The specific in-compartment preferential operation control unit 311 preferentially cools the in-compartment B set in the specific in-compartment selection unit 311a. A refrigerant flow path that connects the three-way valve 92a to the capillary tube 14b, the evaporator 16b, and the evaporator 16a is formed, and the inside B is cooled (step 34). At the same time, the counting of the second initial pull-down is started (step 35).

  Even if the temperature measuring sensor 91a in the column A in the cabinet A reaches the cooling operation temperature in step 36, the cooling stop is continued (step 37).

  If the column temperature measuring sensor 91b in the storage chamber B reaches the cooling stop temperature in step 38, the cooling of the storage chamber B is stopped (step 39). If the cooling operation temperature is reached again in step 40, the storage chamber B is cooled. Is started (step 41).

  The operation from step 36 to step 41 is continued until a predetermined time elapses (3 hours of initial pull-down time), and thereafter normal control is performed (step 43).

  Here, the priority operation control unit 310 may be the arbitrary internal priority operation control unit 312 provided with the optional internal selection unit 312a for selecting the optional internal cooling.

  In step 33 of FIG. 9, the operation of the refrigerant flow rate recognition unit 302 is performed in order to recognize whether more refrigerant has flowed into the evaporator 16 a in the warehouse A or the evaporator 16 b in the warehouse B. The temperature of the A column temperature measuring sensor 91a and the temperature of the column B temperature measuring sensor 91b of the chamber B are read and compared. When the temperature of the in-column temperature measuring sensor 91a <the temperature of the in-column temperature measuring sensor 91b, the refrigerant flow rate is: evaporator 16a (inside A)> evaporator 16b (inside B). Therefore, the inside of the arbitrary storage to be preferentially cooled is stored in the optional storage selection unit 312a as the storage B.

  In the following, the operation for preferentially cooling the internal B stored in the optional internal selection unit 312a by the arbitrary internal preferential operation control unit 312 is the same as that of the specific internal preferential operation control unit 311. Omitted.

  In addition, although the magnitude of the refrigerant | coolant flow volume was compared with the value of the capillary tube 14a and the capillary tube secondary pressure, the temperature of the column temperature measurement sensor 91a, and the temperature of the column temperature measurement sensor 91b, it is not limited to these. .

  As described above, in the present embodiment, the priority operation control unit 310 (initial pull-down shortening means 300) includes the specific storage selection unit 311a for storing the specific storage to be cooled preferentially, and the specific storage By using the specified internal preferential operation control unit 311 for preferentially cooling the interior, at the time of initial pull-down in a high load state, the load applied to the compressor 92b is reduced by reducing the evaporation temperature rise, and the compressor 92b Can be forcibly stopped. Further, the initial pull-down time (the time required for cooling the product to a predetermined temperature) can be shortened, and it is possible to deal with mass sales even when the summer is hot.

  Further, the priority operation control unit 310 (initial pull-down shortening means 300) is provided with an optional internal selection unit 312a for selecting an optional interior to be preferentially cooled, and an optional for preferentially cooling the optional interior By using the in-compartment priority operation control unit 312, during initial pull-down in a high load state, it is possible to reduce the load applied to the compressor 92 b by reducing the increase in evaporation temperature and prevent the compressor 92 b from being forcibly stopped. In addition, the initial pull-down time (the time it takes to cool the product to a predetermined temperature) can be shortened according to the sales situation in order to preferentially cool the interior of any warehouse, and a large amount even when it is hot in summer Can handle sales.

(Embodiment 4)
6 and 7 are configuration diagrams of the control device of the vending machine according to the fourth embodiment of the present invention. FIG. 8 is a configuration diagram of the state storage unit in the fourth embodiment of the present invention. FIG. 10 is a flowchart showing the operation of the control device for the vending machine in the fourth embodiment of the present invention. Detailed description of the same configuration as that of the first embodiment will be omitted.

  In FIG. 6, the initial pull-down control temperature adjustment unit 320 as the initial pull-down shortening means 300 according to the third embodiment of the present invention preferentially stores a specific store for adjusting the control temperature at the time of initial pull-down. A specific internal initial pull-down control temperature adjustment unit 321 for preferentially adjusting the control temperature at the time of initial pull-down in the specific storage is provided. In addition, an optional internal selection unit 322a for selecting an optional interior for preferentially adjusting the control temperature at the initial pull-down is provided, and an optional for preferentially adjusting the control temperature at the initial pull-down in the optional internal The internal initial pull-down control temperature adjustment unit 322 is used.

  The operation and action of the vending machine control apparatus configured as described above will be described below.

  In FIG. 10, the processing from step 31 to step 35 is the same as that of the third embodiment, and thus the description thereof is omitted.

  In step 33, the refrigerant flow rate is the evaporator 16a (inside A)> evaporator 16b (inside B), and the inside of the specific compartment for preferentially adjusting the control temperature at the initial pull-down is designated as inside B in the specific compartment. It memorize | stores in the selection part 321a.

  The specific internal initial pull-down control temperature adjustment unit 321 stops cooling at the time of initial pull-down of the internal B stored in the specific internal selection unit 321a until a predetermined time (3 hours of initial pull-down time) elapses. The temperature is lowered by 3 ° C. than usual (step 51).

If a predetermined time (3 h of initial pull-down time) elapses in step 42, the specific internal initial pull-down control temperature adjustment unit 321 restores the cooling stop temperature at the time of initial pull-down of internal B (step 52). The process is terminated.

  Here, the initial pull-down control temperature adjustment unit 320 has an optional internal selection pull-down control temperature adjustment unit 322a for selecting an optional internal selection unit 322a for preferentially adjusting the control temperature at the time of initial pull-down. It may be 322.

  In step 33 of FIG. 10, the operation is performed so that the refrigerant flow rate recognition unit 302 recognizes whether more refrigerant has flowed into the evaporator 16 a in the cabinet A or the evaporator 16 b in the cabinet B. The temperature of the A column temperature measuring sensor 91a and the temperature of the column B temperature measuring sensor 91b of the chamber B are read and compared. When the temperature of the in-column temperature measuring sensor 91a <the temperature of the in-column temperature measuring sensor 91b, the refrigerant flow rate is: evaporator 16a (inside A)> evaporator 16b (inside B). Therefore, the inside of the arbitrary storage to be preferentially cooled is stored in the optional storage selection unit 322a as the storage B.

  Hereinafter, the operation in which the optional internal initial pull-down control temperature adjustment unit 322 preferentially cools the internal B stored in the optional internal selection unit 322a is the same as the specific internal initial pull-down control temperature adjustment unit 321. Therefore, explanation is omitted.

  Note that the shift temperature of the cooling stop temperature at the initial pull-down is not limited to 3 ° C.

  As described above, in the present embodiment, the initial pull-down control temperature adjustment unit 320 (initial pull-down shortening means 300) stores a specific store for preferentially adjusting the control temperature at the time of initial pull-down. In the initial pull-down in a high load state, the internal selection unit 321a is provided and the specific internal initial pull-down control temperature adjustment unit 321 for preferentially adjusting the control temperature at the initial pull-down in the specific store is used. By reducing the increase in evaporation temperature, the load on the compressor 92b can be reduced, and the forced stop of the compressor 92b can be prevented. Further, the initial pull-down time (the time required for cooling the product to a predetermined temperature) can be shortened, and it is possible to deal with mass sales even when the summer is hot.

  Further, the initial pull-down control temperature adjustment unit 320 (initial pull-down shortening means 300) includes an optional internal selection unit 322a for preferentially selecting the internal storage for adjusting the control temperature at the time of initial pull-down. By using the optional internal initial pull-down control temperature adjustment unit 322 for preferentially adjusting the control temperature during initial pull-down, the compressor 92b can be reduced by reducing the increase in evaporation temperature during initial pull-down in a high load state. Such a load can be reduced and the forced stop of the compressor 92b can be prevented. In addition, the initial pull-down time (the time it takes to cool the product to a predetermined temperature) can be shortened according to the sales situation in order to preferentially cool the interior of any warehouse, and a large amount even when it is hot in summer Can handle sales.

  As described above, since the control device for the vending machine according to the present invention can reduce the load on the compressor and prevent the forced stop, it can be used for any vending machine used in a high load state. Is also applicable.

DESCRIPTION OF SYMBOLS 1 Vending machine 3a, 3b Commodity accommodation column 7 Controller 12 Condenser 16a, 16b Evaporator 92b Compressor 100 Evaporation temperature rise reduction means 100a High load state determination part 110 Forced operation control part 111 Specific in-chamber forced operation control part 111a specification Internal storage unit 112 Optional internal forced operation control unit 112a Optional internal selection unit 120 Control temperature adjustment unit 121 Specific internal control temperature adjustment unit 121a Specific internal storage unit 122 Optional internal control temperature adjustment unit 122a Optional internal selection Section 300 Initial pull-down shortening means 301 Timer determination section 302 Refrigerant flow rate recognition section 303 State storage section 310 Priority operation control section 311 Specified interior priority operation control section 311a Specified interior selection section 312 Arbitrary interior priority operation control section 312a Arbitrary interior Selection unit 320 Initial pull-down control temperature adjustment Unit 321 Initial chamber internal pull-down control temperature adjustment unit 321a Internal chamber selection unit 322 Optional internal chamber pull-down control temperature adjustment unit 322a Optional chamber selection unit

Claims (1)

A compressor for compressing the refrigerant; a condenser for condensing the refrigerant; a three-way valve; an evaporator for cooling the interior A; and an evaporator for cooling the interior B The three-way valve causes the refrigerant condensed in the condenser to flow in the order of an evaporator for cooling the interior B and an evaporator for cooling the interior A, and the interior A and the interior A flow path for cooling both the inside B and a flow path for cooling the inside A by flowing to the evaporator for cooling the inside A without flowing through the evaporator for cooling the inside B In the vending machine that can be switched to, the temperature inside the warehouse A and the inside B and the outside air temperature both cool the inside A and the inside B under the condition that the temperature is not less than a predetermined temperature. When preferentially cooling the inside B, the refrigerant condensed in the condenser by the three-way valve, Flow through the evaporator for cooling the interior B and the evaporator for cooling the interior A to form a flow path for cooling both the interior A and the interior B, and forced cooling at high load The elapsed time from the start of the operation and the forced cooling operation is started, and both the interior A and the interior B reach the cooling stop temperature, or the forced cooling operation is started. If the forced cooling operation is continued until a predetermined time has elapsed since the start of the forced cooling operation, and both the interior A and the interior B have reached the cooling stop temperature before the predetermined time has elapsed since the start of the forced cooling operation. If the forced cooling operation is interrupted until either the inside A or the inside B reaches the cooling operation temperature, and either the inside A or the inside B reaches the cooling operation temperature, Restart the forced cooling operation, start the forced cooling operation When the predetermined time elapses, the forced cooling operation is terminated, and the priority operation for preferentially cooling the inside B based on the cooling stop temperature that is lower than the normal operation by a predetermined temperature is the same refrigerant as in the forced cooling operation. A control device for a vending machine, wherein the control is performed in a flow path for a predetermined time .