JP2009223773A - Vending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vending machine which never causes a capacity shortage of a power supply without increasing the manufacturing cost. <P>SOLUTION: The vending machine adapted to deliver a commodity stored in a commodity storage column to a bucket includes: a plurality of commodity storage columns vertically and horizontally arranged with individual commodity dispensing ports being turned to the same dispensing surface; the bucket which moves along the dispensing surface by driving a vertical travel DC motor and a horizontal travel DC motor; and a motor control means which disposes, when a selection instruction of commodity is given, the bucket in opposition to the commodity storage column storing the corresponding commodity by cooperating the vertical travel DC motor and the horizontal travel DC motor. The motor control means drives, when sales instructions are given, the vertical travel DC motor and the horizontal travel DC motor while shifting the respective starting times. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vending machine in which a plurality of DC motors cooperate to perform desired operations such as product conveyance and product temperature control.

  In the so-called see-through vending machine, a plurality of product storage columns are arranged vertically and horizontally with the product discharge outlet facing the front inside the main body cabinet, and a bucket is placed on the front side of these product discharge outlets. Is arranged. The bucket is disposed so as to be movable in the vertical direction and the horizontal direction. The drive source that moves the bucket in the vertical direction and the drive source that moves the bucket in the left-right direction are individual DC motors. The front surface of the main body cabinet is covered with a transparent member such as glass, and the inside of the main body cabinet can be seen through.

  In this type of vending machine, when a user performs a sales operation such as turning on a selection button after inserting a coin, a sales command is given to the motor control means for controlling the driving of the DC motor. The motor control means to which the sales command is given drives the two DC motors as appropriate, and causes the bucket to be disposed opposite to the product payout opening of the product storage column that stores the selected product. When the bucket is disposed so as to face the product discharge outlet of the product storage column, the product is paid out from the product storage column to the bucket. Thereafter, when the bucket moves to the product outlet, the product reaches the user's hand through the product outlet (see, for example, Patent Document 1).

JP 2007-18277 A

  By the way, in the vending machine in which the two DC motors cooperate with each other as described above, the starting currents of the individual DC motors may be superimposed, and the capacity of the power supply may be insufficient. Such a situation can be solved by installing a larger power supply, but it greatly increases the manufacturing cost of the vending machine.

  In view of the above circumstances, an object of the present invention is to provide a vending machine that does not cause an increase in manufacturing cost and does not cause a shortage of power capacity.

  In order to achieve the above object, a vending machine according to claim 1 of the present invention is a vending machine that transports a product by cooperating a plurality of DC motors, wherein the plurality of DC motors cooperate. Are provided with motor control means for driving the respective DC motors with different start times.

  The vending machine according to claim 2 of the present invention includes a plurality of product storage columns arranged vertically and horizontally, with individual product outlets facing the same delivery surface, a longitudinal DC motor, and a transverse DC. A bucket that moves along the pay-out surface by driving a motor, and when a product selection command is given, the longitudinal DC motor and the lateral DC motor cooperate to accommodate the corresponding product. Motor control means for disposing the bucket facing the commodity storage column, and in the vending machine configured to pay out the goods stored in the commodity storage column to the bucket, the motor control means In this case, the vertical running DC motor and the lateral running DC motor are driven with their start times being shifted from each other.

  The vending machine according to claim 3 of the present invention is the vending machine according to claim 2 described above, wherein the motor control means obtains information on a position currently arranged and a corresponding product when a sales instruction is given. It calculates the required drive time of each of the DC motor for vertical running and the DC motor for horizontal running based on the information of the position facing the stored product storage column, and drives the DC motor having a long required drive time first. And

  According to a fourth aspect of the present invention, in the vending machine according to the second aspect, the payout surface on which the bucket moves is arranged on the front surface of the main body cabinet by arranging a plurality of product storage columns vertically and horizontally. When the longitudinal DC motor is driven, the bucket is moved along the vertical direction, and when the lateral DC motor is driven, the bucket is moved along the left-right direction. It is characterized by that.

  The vending machine according to claim 5 of the present invention includes a plurality of product storage boxes inside the main body cabinet, and each product storage box has an internal fan driven by a separate DC motor for the internal fan. In a vending machine that keeps the interior of each product storage container at a desired temperature state by driving the internal fan according to the temperature control instruction, temperature control commands are simultaneously given to a plurality of product storage containers. In this case, a motor control means for driving a plurality of corresponding internal fan motors with different start times is provided.

  The vending machine according to a sixth aspect of the present invention is the evaporator according to the fifth aspect, wherein the refrigerant is circulated and supplied between the plurality of merchandise storage boxes and a condenser disposed outside the box. And the internal fans supply air for heat exchange to the evaporators arranged in the respective product storages, and the condenser is driven by an outdoor fan DC motor. Heat exchange with the air supplied from the outdoor fan is performed, and the motor control means drives the outdoor fan DC motor after driving the outdoor fan when a temperature control command is given. A direct current motor is driven.

  Further, the vending machine according to claim 7 of the present invention includes a plurality of product storage columns arranged vertically and horizontally inside a product storage box with individual product discharge outlets facing the same payout surface, and a longitudinal DC By driving the motor and the transverse DC motor, the bucket that moves along the delivery surface, and the longitudinal DC motor and the transverse DC motor cooperate when a product selection command is given. , Motor control means for arranging the bucket to face the product storage column containing the corresponding product, and an internal fan that is disposed inside the product storage and is driven by a DC motor for the internal fan. By driving the internal fan according to the temperature control command, the interior of the product storage is maintained at a desired temperature state, while the longitudinal DC motor and the lateral DC motor are driven. In the vending machine in which the products stored in the product storage column are paid out to the bucket, the motor control means is configured to shift the start-up time from each other when the sales command and the temperature control command are given at the same time. It is characterized by driving a motor, a DC motor for lateral running, and a DC motor for an internal fan.

  According to the present invention, when a plurality of DC motors are caused to cooperate, the respective start times are shifted, so there is no possibility that the start current is superimposed. Therefore, it is possible to prevent a situation in which the capacity of the power source is insufficient without installing a large power source.

  Exemplary embodiments of a vending machine according to the present invention will be described below in detail with reference to the accompanying drawings.

  1 and 2 show a vending machine according to an embodiment of the present invention. The vending machines exemplified here have various shapes and sizes such as beverages sealed in containers such as cans, bottles, plastic bottles, paper packs, dairy products and confectionery housed in containers such as cups, etc. The food and drink is sold as a product, and includes a main body cabinet 1 and an outer door 2. The main body cabinet 1 has a box shape with an open front surface. The outer door 2 is swingably supported on one side edge of the main body cabinet 1, and can open and close the front opening of the main body cabinet 1. Although not clearly shown in the figure, the main body cabinet 1 and the outer door 2 each have a heat insulating function, and when the front opening of the main body cabinet 1 is closed by the outer door 2, a commodity storage that becomes a heat insulating space inside the main body cabinet 1 and the outer door 2. 3 is configured.

  The product storage 3 is provided with an internal temperature sensor 4, an evaporator 5, and a product rack 10. The internal temperature sensor 4 detects the temperature of the commodity storage 3. The evaporator 5 constitutes a refrigeration cycle by connecting a compressor 6, a condenser 7 and an expansion valve 8 disposed outside the commodity storage 3 by a refrigerant passage 9. The evaporator 5 is provided with an internal fan 11, while the condenser 7 is provided with an external fan 12. The internal fan 11 promotes heat exchange between the internal atmosphere of the product storage case 3 and the evaporator 5 when the internal fan 11 is rotated by driving an internal fan direct current motor (hereinafter referred to as “internal fan motor 13”). The internal atmosphere is circulated and supplied to the evaporator 5 as much as possible. When the outdoor fan 12 is rotated by driving an outdoor fan direct current motor (hereinafter referred to as “external fan motor 14”), the condenser 7 promotes heat exchange between the outdoor air and the condenser 7. To supply air.

  As shown in FIG. 3, the product rack 10 includes a plurality of product storage columns 15 arranged side by side along the left-right direction of the main body cabinet 1, and the front surfaces of the product storage columns 15 are the same vertical surface (hereinafter, “ A plurality of stages are arranged along the vertical direction inside the product storage case 3 in a state of being called a “dispensing surface”. As is clear from FIG. 2, in the present embodiment, the product rack 10 having a narrower width in the left-right direction on the lower side than the upper side is applied. Specifically, eight product storage columns 15 are provided in the top and second product racks 10 respectively, and seven product storage columns 15 are provided in the third product rack 10, and 4-8. Five product storage columns 15 are provided in the product rack 10 at the stage.

  Each of the product storage columns 15 stores a plurality of products along the front-rear direction of the main body cabinet 1. As shown in FIGS. 4A and 4B, each commodity storage column 15 is provided with a conveyor 16 that is driven independently. The conveyor 16 is provided with an input gear 17 at a portion on the right side when viewed from the front, and is driven when a driving force is input via the input gear 17. When the conveyor 16 is driven, the products placed on the upper surface thereof sequentially move forward, and the products arranged in the front row are paid out one by one from the front surface serving as a product payout exit. In addition, the code | symbol 18 in FIG. 3 is the stopper arrange | positioned at the front-end part of the conveyance conveyor 16 so that it can protrude and retract. The stopper 18 protrudes to the front end position of each product storage column 15 when in the sales standby state to prevent the product from moving forward, and is immersed when the product is paid out in accordance with the sales command and forwards the product. Is allowed to pass through.

  On the other hand, as shown in FIG. 1, the outer door 2 is provided with a window portion 20 at a site corresponding to the above-described commodity storage column 15. The window portion 20 is configured by disposing a transparent plate such as glass, so that the entire product storage column 15 can be seen from the outside of the outer door 2.

  In addition, a sales operation unit 21 and a product outlet 22 are provided on the front surface of the outer door 2 other than the window portion 20. The sales operation unit 21 is for a user to operate when purchasing a product. In the present embodiment, the sales operation unit 21 having a numeric keypad for directly inputting a number corresponding to a purchased product is applied when money is inserted. The product outlet 22 is an opening through which a user receives purchased products. Reference numeral 23 in FIG. 1 is a coin insertion slot for inserting coins, reference numeral 24 is a return lever operated when returning the inserted coins, reference numeral 25 is a banknote insertion slot for inserting banknotes, reference numeral 26 is a return coin, It is a coin return slot where change is paid out.

  As shown in FIGS. 2 and 3, a bucket 30 is disposed inside the main body cabinet 1 in a space between the front surface of the commodity storage column 15 and the outer door 2. The bucket 30 has a box shape having openings on the front surface and the rear surface. The bucket 30 is configured to convey a product delivered from the front end of the product storage column 15 to a portion of the outer door 2 that faces the product outlet 22, via a horizontal movement mechanism 31. It is mounted on the horizontal table 32.

  The horizontal table 32 is a flat plate member having a width larger than that of the uppermost product rack 10, and the bucket 30 is movably mounted on the upper surface thereof along the left-right direction of the main body cabinet 1. The horizontal movement mechanism 31 includes a rack gear 31a provided on the upper surface of the horizontal table 32, a pinion 31b disposed in the bucket 30 so as to mesh with the rack gear 31a, and a horizontal movement DC motor (for driving the pinion 31b). It is a structure corresponding to the DC motor for transverse running of a claim, and is comprised with the following "horizontal movement motor 31c").

  In the horizontal movement mechanism 31, the bucket 30 can be moved in the left-right direction of the main body cabinet 1 by driving the horizontal movement motor 31 c in an arbitrary direction. The horizontal table 32 includes elevating guides 33 at both ends, and is disposed so as to be able to elevate and descend on a pair of guide plates 34 erected on both sides of the commodity storage 3 via the elevating guides 33.

  Between the guide plate 34 and the horizontal table 32, an up-and-down moving mechanism 35 is provided. The lifting / lowering moving mechanism 35 includes a weight 35a, a connecting shaft 35b, a connecting belt 35c, and a lifting / lowering DC motor (corresponding to the longitudinal DC motor in the claims, hereinafter referred to as “elevating / lowering motor 35d”). It is. The weight 35a is disposed so as to be movable in the vertical direction along the extending direction of each guide plate 34. The connecting shaft 35b is a shaft member provided so as to bridge between the upper ends of the pair of guide plates 34. A pulley 35e is fixed to the connecting shaft 35b at the end protruding from each guide plate 34, and a driven gear 35f is fixed to an inner portion of one guide plate 34. The connecting belt 35 c has one end connected to the weight 35 a and the other end connected to the lifting guide 33 of the horizontal table 32. An intermediate portion of the connecting belt 35c is wound around a pulley 35e. The elevating motor 35d is fixed to a portion on the inner side of one guide plate 34, and meshes with the driven gear 35f of the connecting shaft 35b via the drive gear 35g.

  In this up-and-down moving mechanism 35, the up-and-down motor 35d is driven in an arbitrary direction to rotate the pulley 35e through the drive gear 35g, the driven gear 35f, and the connecting shaft 35b, and through the connecting belt 35c wound around this. The horizontal table 32 can be moved in the vertical direction along the guide plate 34.

  As described above, the bucket 30 provided in the main body cabinet 1 through the lifting / lowering moving mechanism 35 and the horizontal moving mechanism 31 is moved to an arbitrary position along the dispensing surface by appropriately moving the lifting / lowering motor 35d and the horizontal moving motor 31c. It is possible to move and selectively arrange on the front surface of the product storage column 15 provided in each product rack 10. Although not explicitly shown in the figure, each of the lift motor 35d and the horizontal movement motor 31c has a built-in encoder, and the vertical movement distance and the horizontal movement distance of the bucket 30 depending on the number of pulses generated by the encoder. Can be detected.

  Moreover, the bucket 30 is provided with a conveyor drive gear 36 as shown in FIGS. 4A and 4B. The conveyor drive gear 36 is disposed on the bucket 30 so as to be swingable via a gear holder 37. When in the retracted position shown in FIG. 4A, the conveyor drive gear 36 is in a state of retreating from the rear surface facing the product storage column 15 in the bucket 30, and the product also when the bucket 30 moves along the payout surface. There is no interference with the storage column 15. On the other hand, when the gear holder 37 is swung and is in the advanced position shown in FIG. 4B, the conveyor drive gear 36 protrudes from the rear surface of the bucket 30, and the commodity storage column 15 disposed opposite to the bucket 30. It is possible to mesh with an input gear 17 provided on the conveyor 16. Although not explicitly shown in the drawing, the conveyor drive gear 36 is linked to a conveyor drive motor (not shown), and the conveyor drive motor (not shown) is engaged with the input gear 17. When driven, the conveyor 16 can be driven to dispense the product.

  Furthermore, as shown in FIG. 2, a power supply 40 is disposed inside the main body cabinet 1. The power source 40 rectifies the commercial power source and applies a direct current to the above-described lifting motor 35d, horizontal movement motor 31c, internal fan motor 13 and external fan motor 14, respectively.

  FIG. 5 is a block diagram showing a DC motor control system applied to the vending machine described above. When the motor control unit 50 receives a sales command from the sales operation unit 21 and a detection signal from the internal temperature sensor 4, the motor control unit 50 d based on a preset program and data stored in the memory 60 in advance. The driving of the horizontal movement motor 31c, the internal fan motor 13 and the external fan motor 14 is controlled. The data stored in the memory 60 includes, for example, column position information 51a in which a product type stored in each product storage column 15 is associated with the position of the product storage column 15 in a database. The motor control unit 50 includes a sales operation monitoring unit 51, a drive time calculation unit 52, an interior temperature monitoring unit 53, and a drive order determination unit 54.

  The sales operation monitoring unit 51 monitors the operation of the sales operation unit 21 while the vending machine is in operation. When a user operates the sales operation unit 21 and a sales command is given from the sales operation unit 21, the sales operation monitoring unit 51 stores a product storage column that stores sales products in a driving time calculation unit 52 described later. 15 is output. Specifically, first, when a sales instruction is given, information on a product selected by the user is extracted from the sales instruction. The sales operation monitoring unit 51 that has extracted the information related to the selected product specifies the product storage column 15 that stores the product and the position thereof based on the column position information 51 a stored in the memory 60, and stores the specified product storage column 15. Information indicating the position is output to the drive time calculator 52.

  When the position information of the product storage column 15 is given from the sales operation monitoring unit 51, the driving time calculation unit 52 uses the position information and the information on the position where the bucket 30 is currently arranged to move in the vertical direction and the horizontal direction. The moving distance in the direction is calculated, and the driving time of the elevating motor 35d and the horizontal moving motor 31c is calculated from the moving speed of the bucket 30 by the elevating motor 35d given in advance and the moving speed of the bucket 30 by the horizontal moving motor 31c. is there. The calculation result of the drive time calculation unit 52 is output to a drive order determination unit 54 described later.

  The internal temperature monitoring unit 53 monitors the detection result of the internal temperature sensor 4 while the vending machine is in operation, and the deviation between the detection result and a preset target temperature is within a predetermined threshold range. Whether or not. When the deviation between the detection result of the internal temperature sensor 4 and the target temperature exceeds the threshold value, the internal temperature monitoring unit 53 outputs a fan drive command to the drive order determination unit 54 described later.

  When the calculation result is given from the drive time calculation unit 52 or when the fan drive command is given from the internal temperature monitoring unit 53, the drive order determination unit 54 is provided with the lift motor 35d, the horizontal movement motor 31c, and the internal fan. The drive order of the motor 13 and the external fan motor 14 is determined.

  FIG. 6 is a flowchart showing the contents of the motor control process that the motor control unit 50 described above repeatedly executes at predetermined cycle times. The operation of the vending machine will be described below with reference to this flowchart as appropriate.

  First, the motor control unit 50 monitors the presence or absence of a sales command from the sales operation unit 21 through the sales operation monitoring unit 51 (step S101). If there is no sales instruction in step S101 (step S101: No), the motor control unit 50 advances the procedure to step S111 without executing the processes of steps S102 to S110 described later.

  On the other hand, when there is a sales command from the sales operation unit 21, that is, when the user inputs the number of the purchased product through the sales operation unit 21 after inserting money, the motor control unit 50 performs the sales operation monitoring unit 51. The product storage column 15 that stores the corresponding product is identified (step S102). Further, the motor control unit 50 determines the vertical movement distance and the horizontal movement distance based on the information on the position where the bucket 30 is currently arranged through the driving time calculation unit 52 and the information on the position of the specified product storage column 15. From the calculation result, the driving time of the lifting motor 35d and the driving time of the horizontal movement motor 31c are calculated (step S103).

  Next, the motor control unit 50 determines whether or not the driving time of the elevating motor 35d is equal to or longer than the driving time of the horizontal movement motor 31c through the driving order determination unit 54 (step S104). When the driving time of the lifting / lowering motor 35d is equal to or longer than the driving time of the horizontal movement motor 31c (step S104: Yes), the motor control unit 50 starts the lifting / lowering motor 35d first and then starts the horizontal movement motor 31c. Is executed (step S105 → step S106). On the other hand, when the driving time of the lifting motor 35d is less than the driving time of the horizontal movement motor 31c (step S104: No), the motor control unit 50 starts the horizontal movement motor 31c first and then starts the lifting motor 35d. The procedure is executed (step S107 → step S108).

  For example, in a state where the bucket 30 is currently disposed at a position facing the product outlet 22 (hereinafter referred to as a “standby position”), the product storage column 15 that stores the sales product is the leftmost of the uppermost stage. In this case, the movement distance along the vertical direction of the bucket 30 becomes larger than the movement distance along the horizontal direction. Accordingly, assuming that the moving speed of the bucket 30 by the elevating motor 35d and the moving speed of the bucket 30 by the horizontal moving motor 31c are the same, when moving from the standby position to the product storage column 15 storing the sales products, The driving time of the lifting / lowering motor 35d becomes longer than that of the moving motor 31c. In this case, the motor control unit 50 first activates the lifting motor 35d, and thereafter (after several ms to several seconds), executes a procedure for activating the horizontal movement motor 31c (step S105 → step S106).

  On the other hand, in the state where the bucket 30 is currently positioned at the standby position, when the commodity storage column 15 that stores the commodity for sale is the leftmost leftmost stage, the movement distance along the vertical direction of the bucket 30 is the horizontal direction. It becomes smaller than the movement distance along. Accordingly, assuming that the moving speed of the bucket 30 by the elevating motor 35d and the moving speed of the bucket 30 by the horizontal moving motor 31c are the same, when moving from the standby position to the product storage column 15 storing the sales products, The driving time of the lifting motor 35d is shorter than that of the moving motor 31c. In this case, the motor control unit 50 first starts the horizontal movement motor 31c, and thereafter (after several ms to several seconds), executes a procedure for starting the lifting motor 35d (step S107 → step S108).

  The driving of the elevating motor 35d and the driving of the horizontal movement motor 31c described above are continued until the moving distance of the bucket 30 detected by the number of pulses from the encoder reaches a position facing the front surface of the target product storage column 15. (Step S109). In addition, after the bucket 30 is opposed to the commodity storage column 15, the gear holder 37 is swung so that the conveyor drive gear 36 meshes with the input gear 17 of the transport conveyor 16, and further, the conveyor drive motor (see FIG. The product arranged in the front row of the product storage column 15 is paid out to the bucket 30 by driving (not shown).

  Thereafter, the elevating motor 35d and the horizontal movement motor 31c are respectively activated in the reverse direction in the same order as described above, and are driven for the calculated driving time to return the bucket 30 to the standby position (step S110).

  Here, when the bucket 30 is moved by the cooperation of the elevating motor 35d and the horizontal movement motor 31c as described above, since the respective starting times are shifted, there is no possibility that the starting current is superimposed. Therefore, there is no possibility of incurring a capacity shortage of the power supply 40 without using a large power supply 40 installed in the vending machine. In addition, when the start time is shifted, the motor having a long required drive time is started first. Therefore, the time until the bucket 30 reaches the commodity storage column 15 and the time until the bucket 30 arranged in the commodity storage column 15 returns to the standby position does not increase. In other words, there will be no situation in which the sales time of the product increases.

  Next, the motor control unit 50 detects the temperature of the product storage case 3 through the internal temperature monitoring unit 53 (step S111), and the deviation between the detected temperature and a preset target temperature falls within a predetermined threshold range. It is determined whether or not there is (step S112). When the deviation between the detected temperature of the product storage 3 and the target temperature is less than the threshold value, the motor control unit 50 ends the current motor control process without going through the following procedure (step S112: Yes).

  On the other hand, when the deviation between the detected temperature of the product storage case 3 and the target temperature is greater than or equal to the threshold (step S112: No), the motor control unit 50 starts the external fan motor 14 (step S113), and thereafter (Several ms to several seconds later), the internal fan motor 13 is activated (step S114). Thereby, heat exchange is performed between the internal atmosphere of the product storage 3 and the evaporator 5, the temperature of the product storage 3 approaches the target temperature, and the product can be maintained in a desired temperature state. become able to.

  Here, also when maintaining the goods storage 3 in a desired temperature state by cooperation of the outside fan motor 14 and the inside fan motor 13 as described above, the respective starting times are shifted and the bucket 30 described above is also used. Since the start-up time is also shifted with respect to the lift motor 35d and the horizontal movement motor 31c for moving the start-up motor, the start-up current is not superposed. Therefore, there is no possibility of incurring a capacity shortage of the power supply 40 without using a large power supply 40 installed in the vending machine.

  In the above-described embodiment, the elevating motor and the horizontal movement motor that cooperate with each other when the product is conveyed, and the internal fan motor and the external fan motor that cooperate with each other when the product is maintained at a desired temperature state, In the vending machine equipped with the above, the start-up times of the lifting motor, horizontal movement motor, internal fan motor, and external fan motor are shifted, but it is not always necessary to control these DC motors. For example, in the vending machine of the modified example shown in FIG. 7, a plurality of internal fan direct current motors and a single outdoor fan direct current motor are controlled, and their start-up times are shifted.

  That is, the vending machine shown in FIG. 7 includes a partition plate 102 inside the main body cabinet 101, and when the front opening of the main body cabinet 101 is closed by the outer door 103, a plurality of independent commodity storage boxes are provided inside the main body cabinet 101. 104 is configured. Although not clearly shown in the figure, in this vending machine, the main body cabinet 101, the outer door 103, and the partition plate 102 each have a heat insulating function, and each commodity storage 104 becomes a heat insulating space. Each product storage 104 is provided with a product storage column 105 along the vertical direction. The product storage column 105 has an insertion port on the upper side, and is provided with a bend mech 106 at the lower end portion. By driving the bend mech 106, it is possible to pay out the products located below one by one.

  Each product storage 104 is provided with an internal temperature sensor 107 and an evaporator 108. The inside temperature sensor 107 detects the temperature of the product storage case 104. The evaporator 108 constitutes a refrigeration cycle by connecting a compressor 109, a condenser 110, and an expansion valve 111 disposed outside the commodity storage 104 by a refrigerant passage 112. In this modification, a plurality of evaporators 108 are connected in parallel, and the compressor 109, the condenser 110, and the expansion valve 111 are shared by the respective evaporators 108.

  Each evaporator 108 is provided with a separate internal fan 113, while the condenser 110 is provided with an external fan 114. The internal fan 113 facilitates heat exchange between the internal atmosphere of the product storage case 104 and the evaporator 108 when rotated by driving the internal fan direct current motor (hereinafter referred to as “internal fan motor 115”). The internal atmosphere is circulated and supplied to the evaporator 108 as much as possible. When the outdoor fan 114 is rotated by driving an outdoor fan direct current motor (hereinafter referred to as “outside fan motor 116”), the condenser 110 promotes heat exchange between the outdoor air and the condenser 110. To supply air.

  Further, the vending machine is provided with a power source 117 and a motor control unit 150. The power supply 117 rectifies the commercial power supply and supplies a direct current to the internal fan motor 115 and the external fan motor 116 described above.

  When a detection signal is given from each internal temperature sensor 107, the motor control unit 150 performs the internal fan motor 115 and the external fan motor 116 based on a preset program and data stored in the memory 151 in advance. Is controlled. The motor control unit 150 includes an internal temperature monitoring unit 152 and a drive order determination unit 153. The internal temperature monitoring unit 152 monitors the detection result of the internal temperature sensor 107 while the vending machine is in operation, and the deviation between the detection result and a preset target temperature is within a predetermined threshold range. Whether or not. When the deviation between the detection result of the internal temperature sensor 107 and the target temperature exceeds the threshold, the internal temperature monitoring unit 152 outputs a fan drive command to the drive order determination unit 153 described later. The drive order determination unit 153 determines the drive order of the internal fan motor 115 and the external fan motor 116 when a fan drive command is given from the internal temperature monitoring unit 152. Specifically, when a fan drive command is given from the internal temperature monitoring unit 152, the drive order determining unit 153 first activates the external fan motor 116, and then (after several ms to several seconds), the internal fan The motor 115 is started. When there are a plurality of in-compartment fan motors 115 to be activated, the activation time is shifted so that they are not activated at the same time. As the order, for example, it may be activated in order from the product container 104 having a large deviation.

  Also in the vending machine of this modified example, when the outside fan motor 116 and the inside fan motor 115 are made to cooperate as described above, the starting times are shifted, so there is no possibility that the starting current is superimposed. . Therefore, there is no fear that the capacity of the power supply 117 will be insufficient even if a large power supply 117 installed in the vending machine is not used.

It is a front view which shows the external appearance of the vending machine which is embodiment of this invention. It is a front view which shows the state which open | released the outer door of the vending machine shown in FIG. It is a perspective view which shows notionally the goods conveyance system of the vending machine shown in FIG. It is a conceptual diagram which shows the state by which the bucket was opposingly arranged with respect to the goods storage column of the vending machine shown in FIG. It is a conceptual diagram which shows the state which has transmitted the driving force from the bucket with respect to the goods storage column of the vending machine shown in FIG. It is the block diagram which showed the control system of the DC motor applied to the vending machine shown in FIG. It is a flowchart which shows the content of the process which the motor control part shown in FIG. 5 performs. It is a figure which shows the control system of the vending machine which is a modification of this invention.

Explanation of symbols

3 Commodity storage 4 In-compartment temperature sensor 5 Evaporator 10 Commodity rack 11 In-compartment fan 12 Out-compartment fan 13 In-compartment fan motor 14 Out-compartment fan motor 15 Commodity storage column 31 Horizontal movement mechanism 31c Horizontal movement motor 35 Elevation movement mechanism 35d Lift motor 40 Power supply 50 Motor control unit 51 Sales operation monitoring unit 52 Drive time calculation unit 53 Internal temperature monitoring unit 54 Drive order determination unit 104 Product storage box 105 Product storage column 107 Internal temperature sensor 108 Evaporator 113 Internal fan 114 External fan 115 Internal fan motor 116 External fan motor 117 Power supply 150 Motor control unit 152 Internal temperature monitoring unit 153 Drive order determination unit

Claims (7)

In vending machines that transport products by cooperating multiple DC motors,
A vending machine comprising motor control means for driving each of the DC motors with different startup times when the plurality of DC motors cooperate with each other. A plurality of product storage columns arranged vertically and horizontally with individual product outlets facing the same delivery surface;
A bucket that moves along the payout surface by driving a longitudinal DC motor and a transverse DC motor;
Motor control means for coordinating the longitudinal DC motor and the transverse DC motor when a product selection command is given, so that the bucket is disposed opposite to the product storage column containing the corresponding product; In the vending machine that is configured to pay out the products stored in the product storage column to the bucket,
The motor control means drives a longitudinal running DC motor and a transverse running DC motor with a start time shifted from each other when a sales command is given.   The motor control means, when a sales command is given, is based on the information on the position currently arranged and the information on the position facing the product storage column that stores the corresponding product, and the DC motor for vertical running and the lateral running 3. The vending machine according to claim 2, wherein the required driving time of each DC motor is calculated, and the DC motor having a long required driving time is driven first. The payout surface on which the bucket moves is configured on the front surface of the main body cabinet by arranging a plurality of product storage columns in the vertical and horizontal directions,
The bucket is moved along a vertical direction when the DC motor for vertical running is driven, and the bucket is moved along a horizontal direction when the DC motor for horizontal running is driven. The vending machine according to 2. By providing a plurality of product storage boxes inside the main body cabinet, each product storage box having an internal fan driven by a DC motor for individual internal fan, and driving the internal fan according to the temperature control command, In a vending machine that keeps the inside of each product container at a desired temperature state,
A vending machine comprising motor control means for driving a plurality of DC motors for the corresponding fans with different start times when temperature control commands are given simultaneously to a plurality of product storages . Each of the plurality of commodity storages includes an evaporator in which a refrigerant is circulated and supplied to and from a condenser disposed outside the storage, and the internal fan is disposed in each of the commodity storages. The evaporator supplies heat exchange air, and the condenser performs heat exchange with air supplied from an outdoor fan driven by an outdoor fan DC motor.
6. The vending machine according to claim 5, wherein the motor control means drives the outdoor fan DC motor after driving the outdoor fan DC motor when a temperature control command is given. A plurality of product storage columns arranged vertically and horizontally inside the product storage with individual product outlets facing the same delivery surface;
A bucket that moves along the payout surface by driving a longitudinal DC motor and a transverse DC motor;
Motor control means for coordinating the longitudinal DC motor and the transverse DC motor when a product selection command is given, so that the bucket is disposed opposite to the product storage column containing the corresponding product; ,
An internal fan that is disposed inside the product storage box and is driven by a DC motor for the internal fan, and driving the internal fan according to a temperature control command, thereby allowing the interior of the product storage room to have a desired temperature. On the other hand, in a vending machine configured to pay out the product stored in the product storage column to the bucket by driving the longitudinal DC motor and the lateral DC motor while maintaining the state,
The motor control means drives the DC motor for longitudinal running, the DC motor for lateral running, and the DC motor for internal fans by shifting the startup time when a sales command and a temperature control command are given simultaneously. vending machine.

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