JP2005099985A - Controller for automatic vending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce risk of refrigerant leakage to improve safety, in a cooling device of an HC refrigerant having combustibility. <P>SOLUTION: When an arithmetic control part 7a obtains recognition that current flows through a compressor by a recognition means 9, the arithmetic control part 7a detects a pressure of the compressor by a pressure detection means 10. When the detected pressure is a pressure previously stored in a pressure storage means 11 or below, it is decided that the leakage of the refrigerant is present, and a condenser fan applied voltage increase means 8 is operated. By increasing applied voltage of a condenser fan, an airflow of the condenser fan is increased to quickly diffuse the leakage refrigerant in a machine room. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooling device using a combustible refrigerant.

  In recent years, from the viewpoint of protecting the earth's ozone layer, the use of refrigerants containing chlorine atoms such as refrigerant CFC (chlorofluorocarbon) -12 or HCFC (hydrochlorofluorocarbon) -22 used in vending machines has been regulated, Conversion to an HFC (hydrofluorocarbon) refrigerant that does not contain chlorine atoms and does not destroy the ozone layer is underway.

  Conventionally, in a cooling device that mainly uses HFC-22 refrigerant, R407C, which is a mixed refrigerant of HFC refrigerant, is adopted and sold as an alternative refrigerant.

  However, currently used HFC refrigerants such as R407C do not destroy the ozone layer, but because of their high global warming potential, they are insufficient for global warming, and therefore have low global warming potential. Therefore, natural refrigerants such as HC (hydrocarbon) are attracting attention in place of HFC.

  On the other hand, since the HC natural refrigerant has flammability, when it is used as a refrigerant in a vending machine in a cooling device, ensuring safety is an issue, and consideration must be given to refrigerant leakage.

Therefore, as a control device for a vending machine using HC refrigerant, when the leakage of HC refrigerant is detected, the power supply to the equipment in the vending machine is stopped to suppress the leakage of the refrigerant, and the ignition source of the electric system There is a thing which prevents ignition by stopping (for example, refer to Patent Document 1).

  Hereinafter, the control unit of the vending machine using the conventional combustible refrigerant will be described with reference to the drawings.

  FIG. 13 is a functional block diagram of a conventional vending machine. As shown in FIG. 13, the control unit 1 of the conventional vending machine includes a compressor 2 that compresses the refrigerant, an electric heater 3 that heats the product, a refrigerant leak device 4 that detects refrigerant leak, and a refrigerant leak. It is composed of an alarm device 5 for notifying surrounding people with a buzzer or a warning light and various devices 6 as other devices.

  The operation of the vending machine configured as described above will be described below. If the refrigerant leakage device 4 detects the refrigerant leakage, the control unit 1 stops the power supply to the compressor 2, the electric heater 3, and the various devices 6, and the alarm device 5 notifies the surrounding person of a buzzer or warning light. Let me know.

In addition, as an example of the case where HC refrigerant leaks into a machine room such as a refrigerator, even if the compressor is not operating, the condenser fan is always operated so that even if HC refrigerant leaks, There is one in which the refrigerant is diffused so that the machine room does not reach an explosion limit atmosphere (for example, see Patent Document 2).
JP 2001-93039 A JP 2000-266439 A

  However, in the conventional technology, if the leakage of the refrigerant is detected, the person around it is notified by a buzzer or a warning light, but the leakage of the refrigerant is stopped by stopping the power supply of various devices. There is a drawback that it cannot be diffused early.

  The present invention solves the above-described conventional problems. If the refrigerant leakage is recognized, the condenser fan air volume increasing means increases the air volume of the condenser fan, so that the leaked refrigerant can be quickly diffused. It is providing the control apparatus of the vending machine using the combustible refrigerant | coolant which can be performed.

  In order to solve the above-mentioned conventional problems, a control device for a vending machine according to the present invention comprises a condenser fan air volume increasing means for increasing the air volume of a condenser fan, a pressure detecting means for detecting the pressure of the compressor, and a compression A pressure storage means for storing the pressure of the machine, the condenser fan air volume increasing means, the pressure detection means, and a calculation control unit connected to the pressure storage means, the calculation control unit being a compressor When the pressure detector is operating, the pressure detection means detects the pressure of the compressor, and the condenser fan air volume increasing means is operated when the pressure is less than or equal to the pressure stored in the pressure storage means.

  Thereby, even though the compressor is in operation, the calculation control unit determines that the refrigerant in the pipe has leaked because the pressure of the compressor has dropped below a certain value, and the compressor and the like are arranged. Increase the air flow of the condenser fan so that the atmosphere of the location does not reach the explosion limit, and quickly diffuse the leaked refrigerant.

  The control device for the vending machine of the present invention includes a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a temperature detecting means for detecting the internal temperature, and a temperature storage means for storing the internal temperature, The condenser fan air volume increasing means, the temperature detection means, and a calculation control unit connected to the temperature storage means, the calculation control unit when the compressor is operating, the temperature detection means Detects the temperature in the cabinet, and operates the condenser fan air volume increasing means when the temperature is equal to or higher than the temperature stored in the temperature storage means.

  As a result, even though the compressor is in operation, the calculation control unit determines that the refrigerant inside the pipe may have leaked because the internal temperature has risen to a certain value or more. Increase the air volume of the condenser fan to quickly diffuse the leaked refrigerant so that the atmosphere at the location does not reach the explosion limit.

  The control device for the vending machine according to the present invention includes a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a power consumption detecting means for detecting the power consumption of the compressor, and a consumption for storing the power consumption of the compressor. It comprises a power storage means, the condenser fan air volume increasing means, the power consumption detection means, and a calculation control unit connected to the power consumption detection storage means. The calculation control unit is operated by a compressor. The power consumption detection means detects the power consumption of the compressor, and the condenser fan air volume increasing means is operated when the power consumption is less than or equal to the power consumption stored in the power consumption storage means.

  As a result, even though the compressor is in operation, the calculation control unit determines that the refrigerant inside the pipe may have leaked because the power consumption of the compressor has fallen below a certain value. Increase the air flow of the condenser fan so that the atmosphere of the place where the is placed does not reach the explosion limit, and quickly diffuse the leaked refrigerant.

  The control device for the vending machine according to the present invention includes a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a pressure detecting means for detecting the pressure of the compressor, and a pressure storage means for storing the pressure of the compressor. The pressure detecting means for arbitrarily setting the pressure detected by the pressure detecting means, the condenser fan air volume increasing means, the pressure detecting means, the pressure storage means, and the pressure setting means. When the refrigeration capacity differs depending on the vending machine, the detection pressure suitable for the compressor can be set. Even if the flammable refrigerant leaks from the cooling device, the calculation control unit The pressure drop of the compressor due to the leakage of the refrigerant is detected by the pressure detecting means, and the condenser fan air volume increasing means is operated when the pressure is not more than the pressure stored in the pressure storing means. It is.

  As a result, when the refrigeration capacity is different, the detection pressure suitable for the compressor can be arbitrarily set, and when the refrigerant leaks, the calculation control unit is installed inside the pipe because the pressure falls below the value set in the pressure setting means. The refrigerant is judged to have leaked, and the leaked refrigerant is quickly diffused by increasing the air volume of the condenser fan so that the atmosphere at the location where the compressor or the like is located does not reach the explosion limit.

  The control device of the vending machine according to the present invention includes a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a temperature detecting means for detecting the internal temperature, a temperature storage means for storing the internal temperature, Temperature setting means for arbitrarily setting the temperature detected by the temperature detection means, the condenser fan air volume increasing means, the temperature detection means, the temperature storage means, and a calculation connected to the temperature setting means When the set temperature differs depending on the vending machine, it is possible to set a detection temperature suitable for the set temperature in the store, and the calculation control unit should have leaked flammable refrigerant from the cooling device. Even in this case, the internal temperature due to the leakage of the refrigerant is detected by the temperature detecting means, and the condenser fan air volume increasing means is operated when the temperature is equal to or higher than the temperature stored in the temperature storing means. .

  As a result, when the internal temperature fluctuates due to the internal temperature setting, the internal temperature detection can be arbitrarily set according to the internal temperature setting, and is set in the temperature setting means when the refrigerant leaks. When the value exceeds the value, the calculation control unit determines that the refrigerant inside the pipe has leaked, and increases the air flow rate of the condenser fan so that the atmosphere where the compressor is located does not reach the explosion limit. To quickly diffuse the leaked refrigerant.

  The control device for the vending machine according to the present invention includes a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a power consumption detecting means for detecting the power consumption of the compressor, and a consumption for storing the power consumption of the compressor. Power storage means, power consumption setting means for arbitrarily setting the power consumption detected by the power consumption detection means, the condenser fan air volume increasing means, the power consumption detection means, and the power consumption detection storage means And a calculation control unit connected to the power consumption setting means, and when the set temperature in the warehouse and the power consumption of the compressor are different depending on the vending machine, the detected power consumption suitable for the power consumption of the compressor is obtained. Even if the combustible refrigerant leaks from the cooling device, the arithmetic control unit detects a reduction in the power consumption of the compressor due to the leakage of the refrigerant by the power consumption detection means, and If was consumed power less stored in the power storage means, in which operating the condenser fan air quantity increasing means.

  As a result, when the set temperature in the warehouse differs from the power consumption of the compressor depending on the vending machine, the detected power consumption of the compressor can be set arbitrarily according to the power consumption of the compressor. When the value falls below the value set in the setting means, the calculation control unit determines that the refrigerant inside the pipe has leaked, and condenses so that the atmosphere in the place where the compressor is located does not reach the explosion limit. Increase the air flow of the fan and quickly diffuse the leaked refrigerant.

  In the control device for the vending machine according to the present invention, the calculation control unit can detect the pressure of the compressor by the pressure detection means of the compressor, and if it is less than the set pressure, operates the condenser fan air volume increasing means. Therefore, the air volume of the condenser fan is increased, and the leaked refrigerant in the machine room can be quickly diffused, and the safety against ignition or ignition of the combustible refrigerant can be improved.

  In addition, the calculation control unit can detect the temperature in the warehouse by the temperature detection means in the warehouse, and can operate the condenser fan air volume increasing means if it is below the set temperature, so the air volume of the condenser fan The leakage refrigerant in the machine room can be quickly diffused, and the safety of the combustible refrigerant against ignition or ignition can be improved.

  In addition, the arithmetic control unit can detect the power consumption of the compressor by the power consumption detection means of the compressor 2 and can operate the condenser fan air volume increasing means if the power consumption is less than the set power consumption. The air flow of the fan can be increased, and the leaked refrigerant in the machine room can be quickly diffused, and the safety against ignition or ignition of the combustible refrigerant can be improved.

  In addition, when the cooling capacity varies depending on the vending machine, it is possible to set a detection pressure suitable for the compressor, and the arithmetic control unit can detect the pressure of the compressor by the pressure detection means of the compressor 2 and is below the set pressure. If this is the case, the condenser fan air volume increasing means can be operated, so that the air volume of the condenser fan is increased, and the leaked refrigerant in the machine room can be quickly diffused, and the safety against ignition or ignition of the flammable refrigerant Can be improved.

  In addition, when the set temperature in the warehouse is different depending on the vending machine, the detection temperature suitable for the set temperature in the warehouse can be set, and the calculation control unit can detect the temperature in the warehouse by the temperature detection means in the warehouse and set it. If the temperature is lower than the specified temperature, the condenser fan air volume increasing means can be operated, so that the air volume of the condenser fan increases and the leaked refrigerant in the machine room can be quickly diffused, and the flammable refrigerant is ignited or ignited. It is possible to improve safety against.

  In addition, when the set temperature in the warehouse and the power consumption of the compressor are different depending on the vending machine, the detection power consumption suitable for the power consumption of the compressor can be set, and the calculation control unit uses the compressor power consumption detection means to compress it. If the power consumption of the machine can be detected and the power consumption is less than the set power consumption, the condenser fan air volume increasing means can be operated, so the air volume of the condenser fan increases and the leaked refrigerant in the machine room is quickly diffused. It is possible to improve the safety against the ignition or ignition of the combustible refrigerant.

  The invention according to claim 1 is a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a pressure detecting means for detecting the pressure of the compressor, a pressure storage means for storing the pressure of the compressor, Condenser fan air volume increasing means, the pressure detection means, and a calculation control unit connected to the pressure storage means, the calculation control unit, when the compressor is operating, the pressure detection means When the pressure of the compressor is detected and the pressure is less than the pressure stored in the pressure storage means, the condenser fan air volume increasing means is operated, and the compressor is operated even though the compressor is operating. When the pressure drops below a certain value, the calculation control unit determines that the refrigerant inside the pipe has leaked, and the air flow of the condenser fan does not reach the explosion limit at the place where the compressor is located. Increase the leakage refrigerant It can be quickly diffused.

  The invention according to claim 2 is a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a temperature detecting means for detecting the internal temperature, a temperature storage means for storing the internal temperature, and the condenser The fan control unit is connected to a fan air volume increasing unit, the temperature detecting unit, and the temperature storing unit, and the calculation control unit is configured so that when the compressor is operating, the temperature detecting unit The condenser fan air volume increasing means is operated when the temperature is equal to or higher than the temperature stored in the temperature storage means. The condenser fan determines that there is a possibility that the refrigerant inside the piping has leaked due to the rise above a certain value, so that the atmosphere where the compressor is located does not reach the explosion limit. Increase the air volume of the leaked refrigerant It can be quickly diffused.

  The invention described in claim 3 is a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a power consumption detecting means for detecting the power consumption of the compressor, and a power consumption memory for storing the power consumption of the compressor. And a calculation control unit connected to the condenser fan air volume increasing unit, the power consumption detection unit, and the power consumption detection storage unit, and the calculation control unit is operated by a compressor. Sometimes, the power consumption detection means detects the power consumption of the compressor, and when the power consumption is less than or equal to the power consumption stored in the power consumption storage means, the condenser fan air volume increasing means is operated. Although the power consumption of the compressor has fallen below a certain value despite the operation, the calculation control unit determines that the refrigerant inside the pipe may have leaked, and the compressor etc. are arranged The atmosphere of the place is explosive It has the effect of quickly diffusing the leakage coolant by increasing the air volume of the condenser fan so as not to reach the limit.

  The invention according to claim 4 is a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a pressure detecting means for detecting the pressure of the compressor, a pressure storage means for storing the pressure of the compressor, Pressure setting means for arbitrarily setting the pressure detected by the pressure detection means, the condenser fan air volume increasing means, the pressure detecting means, the pressure storage means, and a calculation connected to the pressure setting means When the refrigerating capacity differs depending on the vending machine, the control pressure can be set to a suitable compressor, and the arithmetic control unit should be able to set the refrigerant even if flammable refrigerant leaks from the cooling device. The pressure drop of the compressor due to leakage is detected by the pressure detection means, and the condenser fan air volume increasing means is operated when the pressure is not more than the pressure stored in the pressure storage means. When the refrigeration capacity is different, the detection pressure suitable for the compressor can be set arbitrarily, and when the refrigerant leaks, the calculation control unit leaks the refrigerant inside the pipe because it falls below the value set in the pressure setting means It is determined that the leaked refrigerant can be quickly diffused by increasing the air volume of the condenser fan so that the atmosphere where the compressor is disposed does not reach the explosion limit.

  According to a fifth aspect of the present invention, there is provided a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a temperature detecting means for detecting the internal temperature, a temperature storage means for storing the internal temperature, and the temperature detection. An arithmetic control unit connected to the temperature setting means for arbitrarily setting the temperature detected by the means, the condenser fan air volume increasing means, the temperature detecting means, the temperature storage means, and the temperature setting means In the case where the temperature set in the warehouse is different depending on the vending machine, it is possible to set a detection temperature suitable for the temperature set in the warehouse, and the arithmetic control unit should be able to set the flammable refrigerant from the cooling device. The temperature inside the box due to the leakage of the refrigerant is detected by the temperature detecting means, and when the temperature is equal to or higher than the temperature stored in the temperature storage means, the condenser fan air volume increasing means is operated, Inside When the internal temperature fluctuates depending on the temperature setting, the internal temperature detection can be arbitrarily set according to the internal temperature setting, and when the refrigerant leaks, the temperature has exceeded the value set in the temperature setting means. Therefore, the calculation control unit determines that the refrigerant in the pipe has leaked, and quickly increases the air flow of the condenser fan so that the atmosphere in the place where the compressor is located does not reach the explosion limit. Can be diffused.

  The invention described in claim 6 is a condenser fan air volume increasing means for increasing the air volume of the condenser fan, a power consumption detecting means for detecting the power consumption of the compressor, and a power consumption memory for storing the power consumption of the compressor. Power consumption setting means for arbitrarily setting power consumption detected by the power consumption detection means, the condenser fan air volume increasing means, the power consumption detection means, and the power consumption detection storage means, It consists of a calculation control unit connected to the power consumption setting means, and when the set temperature in the warehouse and the power consumption of the compressor are different depending on the vending machine, it can set the detected power consumption suitable for the power consumption of the compressor. In the unlikely event that the flammable refrigerant leaks from the cooling device, the arithmetic control unit detects a reduction in power consumption of the compressor due to the leakage of the refrigerant by the power consumption detection means, and When the power consumption stored in the means is less than or equal to the power consumption, the condenser fan air volume increasing means is operated. When the set temperature in the refrigerator and the power consumption of the compressor are different depending on the vending machine, Depending on the power consumption, the detected power consumption of the compressor can be set arbitrarily, and when the refrigerant leaks, the calculation control unit leaks the refrigerant inside the pipe because it falls below the value set in the power consumption setting means It is determined that the leaked refrigerant can be quickly diffused by increasing the air volume of the condenser fan so that the atmosphere where the compressor is disposed does not reach the explosion limit. According to a seventh aspect of the present invention, in the first to sixth aspects of the present invention, the condenser fan air volume increasing means is a device for increasing the applied voltage of the condenser fan or a device for increasing the frequency of the applied voltage. By increasing the applied voltage applied to the condenser fan or increasing the frequency of the applied voltage, the rotational speed increases, and as a result, the air flow of the condenser fan is increased, so that the leaked refrigerant can be quickly removed. Can be diffused.

  Embodiments of a control device for a vending machine according to the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram of a control device for a vending machine according to Embodiment 1 of the present invention. FIG. 2 is a flowchart showing the operation of the control device of the vending machine of the embodiment. FIG. 3 is a side sectional view of the vending machine according to the embodiment. FIG. 4 is a plan view of the cooling device of the vending machine according to the embodiment.

  As shown in FIG. 3, the general structure of the vending machine and the cooling device include a cabinet 7 and a door 8 that form the main body of the vending machine, and a machine room 9 and a machine room 9 arranged below the cabinet 7. The cooler 12 in which the interior 11 is formed by the heat insulating wall 10 at the top and the flammable refrigerant is sealed is the cooler 13 disposed in the interior 11, the interior fan 14, and the compression disposed in the machine room 9. The machine 2, the condenser 15, and the condenser fan 16 are provided.

  Regarding the cooling operation, first, the combustible refrigerant is compressed by the compressor 2, and the refrigerant having a high temperature becomes higher than the ambient temperature, so that heat is released in the condenser 15, whereby the combustible refrigerant becomes a liquid. It cools to the same temperature as the surroundings, enters into a thin tube, and this time the pressure drops. The liquid vaporizes more easily at lower pressures, so the combustible refrigerant that becomes liquid evaporates into a gas. At this time, the cooler 13 takes away the ambient heat and lowers the temperature in the cabinet 11. Then, it becomes a gaseous flammable refrigerant and returns to the compressor 9 where it is compressed. Thus, in the cooling device 12 in normal operation, the internal pressure increases.

  In FIG. 4, the machine room 9 includes a compressor 2, a condenser 15, and a condenser fan 16, and the condenser fan 16 is arranged so that the condenser 15 can be cooled. 15, the condenser fan 16 and the compressor 9 are arranged in the depth direction in this order.

  As for the air flow in the machine room 9, the condenser fan 16 is operated to cool the condenser 15, and an air flow is possible from the front to the rear of the machine room 9. As described above, when the flammable refrigerant leaks from the compressor 2 or the condenser 15 arranged in the machine room 9, it is desirable to quickly diffuse the leaked refrigerant so that the atmosphere does not reach the explosion limit.

  The operation of the present embodiment will be described below with reference to FIGS.

  As shown in FIG. 1, the condenser fan air volume increasing means 17 for increasing the air volume for increasing the air volume of the condenser fan 16, the recognition means 18 for recognizing the operation of the compressor, and the pressure of the compressor are detected. Arithmetic control connected to the pressure detection means 19, the pressure storage means 20 for storing the pressure of the compressor, the condenser fan air volume increasing means 17, the recognition means 18, the pressure detection means 19, and the pressure storage means 20. A portion 21a is provided.

  The operation of the vending machine control apparatus configured as described above will be described below with reference to the flowchart of FIG.

  First, the power source of the vending machine is turned on, and the arithmetic control unit 21a operates the compressor for a certain period of time (by the recognition means 18). If it is in operation (STEP 1), the pressure detection means 19 causes the compressor 2 to The pressure is detected (STEP 2).

  If the pressure detected in STEP 2 is a certain value or more, it is determined that there is no refrigerant leakage, and the cooling operation is continued.

  If the pressure is equal to or lower than the pressure previously stored in the pressure storage means 20 (STEP 3) even though the compressor 2 has been operated for a certain time in STEP 2, it is determined that the refrigerant has leaked, and the condenser fan air volume increasing means 17 Is operated (STEP 4). Moreover, leakage can be further suppressed by stopping the compressor 2 at this time.

  As described above, the control device of the vending machine according to the first embodiment includes the condenser fan air volume increasing unit 17 that increases the air volume of the condenser fan 16, the pressure detecting unit 19 that detects the pressure of the compressor 2, and The pressure storage means 20 for storing the pressure of the compressor 2, the condenser fan air volume increasing means 17, the pressure detection means 19, and the calculation control section 21 a connected to the pressure storage means 20, the calculation control section 21 a The pressure detection means 19 detects the pressure of the compressor 2 when the compressor 2 is operating. If the detected pressure is lower than the pressure of the compressor 2 in the normal operation without refrigerant leakage, which is stored in the pressure storage means 20 in advance, it is determined that the refrigerant has leaked, and the condenser fan air volume increases. Since the means 17 is operated, the leakage refrigerant in the machine chamber 9 can be quickly diffused by detecting the refrigerant leakage due to the pressure drop of the compressor 2 and increasing the air volume of the condenser fan 16.

(Embodiment 2)
FIG. 5 is a block diagram of a control device for a vending machine according to the second embodiment of the present invention. FIG. 6 is a flowchart showing the operation of the embodiment.

  As shown in FIG. 5, the condenser fan air volume increasing means 17 for increasing the air volume of the condenser fan 16, the temperature detecting means 22 for detecting the temperature of the interior 11 and the temperature detecting means for storing the temperature of the interior 11 23, a condenser fan air volume increasing unit 17, a temperature detecting unit 22, and a calculation control unit 21 b connected to the temperature detecting unit 23.

The operation of the vending machine control apparatus configured as described above will be described below with reference to the flowchart of FIG.
First, the power source of the vending machine is turned on, and the arithmetic control unit 21b detects the internal temperature by the temperature detection means 22 (STEP 2) when the compressor 2 is operating (STEP 1). If the internal temperature is equal to or lower than the temperature stored in advance in the temperature detecting means 23 (STEP 3), the condenser fan air volume increasing means 17 is operated (STEP 4).

  As described above, the control device of the vending machine according to the second embodiment includes the condenser fan air volume increasing unit 17 that increases the air volume of the condenser fan 16, the temperature detecting unit 22 that detects the temperature of the interior 11, and It comprises a temperature detection means 23 for storing the temperature of the interior 11, a condenser fan air volume increasing means 17, a temperature detection means 22, and a calculation control section 21 b connected to the temperature detection means 23, and the calculation control section 21 b Recognizes whether the compressor 2 is energized. If the compressor 2 is operating, the temperature detection means 22 detects the temperature of the interior 11. If the detected temperature is stored in the temperature detection means 23 in advance and is equal to or higher than the internal temperature in the normal operation without refrigerant leakage, it is determined that the refrigerant has leaked, and the condenser fan air volume increasing means 17 Since the refrigerant leakage due to the rise in the internal temperature is detected and the air volume of the condenser fan 16 is increased, the leakage refrigerant in the machine room 9 can be quickly diffused.

(Embodiment 3)
FIG. 7 is a block diagram of the control device of the vending machine according to the third embodiment of the present invention. FIG. 8 is a flowchart showing the operation of the embodiment.
As shown in FIG. 7, the condenser fan air volume increasing means 17 for increasing the air volume of the condenser fan 16, the power consumption detecting means 24 for detecting the power consumption of the compressor 2, and the power consumption of the compressor 2 are stored. An arithmetic control unit 21 c connected to the power consumption storage means 25, the condenser fan air volume increasing means 17, the power consumption detection means 24, and the power consumption storage means 25 is provided.

The operation of the vending machine control apparatus configured as described above will be described below with reference to the flowchart of FIG.
First, when the power of the vending machine is turned on and the compressor 2 is operating (STEP 1), the power consumption detecting means 24 detects the power consumption of the compressor 2 (STEP 2). If the power consumption of the compressor 2 is less than or equal to the power consumption stored in advance in the power consumption storage means 25 (STEP 3), the condenser fan air volume increasing means 17 is operated (STEP 4).

  As described above, the control device for the vending machine according to the third embodiment includes the condenser fan air volume increasing unit 17 that increases the air volume of the condenser fan 16, and the power consumption detecting unit that detects the power consumption of the compressor 2. 14, a power consumption storage means 15 for storing the power consumption of the compressor 2, a condenser fan air volume increasing means 8, a power consumption detection means 24, and a calculation control unit 21 c connected to the power consumption storage means 25. Thus, the arithmetic control unit 21 c detects the power consumption of the compressor 2 by the power consumption detection means 24 when the compressor 2 is operating. If the detected power consumption of the compressor 2 is equal to or lower than the power consumption of the compressor 2 in normal operation without refrigerant leakage, which is stored in the power consumption storage unit 25 in advance, it is determined that the refrigerant has leaked. Since the condenser fan air volume increasing means 17 is operated, the refrigerant leakage due to the decrease in the power consumption of the compressor 2 is detected, and the air volume of the condenser fan 16 is increased, so that the leaked refrigerant in the machine room 9 is reduced. Can diffuse quickly.

(Embodiment 4)
FIG. 9 is a block diagram of a control device for a vending machine according to Embodiment 4 of the present invention. FIG. 10 is a flowchart showing the operation of the embodiment.

  As shown in FIG. 9, the condenser fan air volume increasing means 17 for increasing the air volume of the condenser fan 16, the pressure detecting means 19 for detecting the pressure of the compressor 2, and the pressure storage means for storing the pressure of the compressor 2. 20, pressure setting means 26 for arbitrarily setting the pressure detected by the pressure detection means 19, condenser fan air volume increasing means 17, pressure detection means 19, pressure storage means 20, and pressure setting means 26. A connected arithmetic control unit 21d is provided.

The operation of the vending machine control apparatus configured as described above will be described below with reference to the flowchart of FIG.
First, after the power of the vending machine is turned on and the operator enters the pressure setting of the compressor 2 (STEP 1), the operator sets the pressure of the arbitrary compressor 2 with the pressure setting means 26 (STEP 2). The pressure of the compressor 2 set in the above is stored in the pressure storage means 20 (STEP 3). Next, when the compressor 2 is operating (STEP 4), the arithmetic control unit 21d detects the pressure by the pressure detecting means 19 (STEP 5). If the pressure is equal to or lower than the pressure stored in advance in the pressure storage means 20 (STEP 6), the condenser fan air volume increasing means 17 is operated (STEP 7).

  As described above, the control device for the vending machine according to the fourth embodiment includes the condenser fan air volume increasing unit 17 that increases the air volume of the condenser fan 16, the pressure detecting unit 19 that detects the pressure of the compressor 2, and A pressure storage means 20 for storing the pressure of the compressor 2, a pressure setting means 26 for arbitrarily setting the pressure detected by the pressure detection means 19, a condenser fan air volume increasing means 17, a pressure detection means 19, The pressure storage means 20 and a calculation control unit 21d connected to the pressure setting means 26 can set a detection pressure suitable for the compressor 2 when the cooling capacity is different depending on the vending machine. The calculation control unit 21d When the compressor 2 is operating, the pressure detection means 19 detects the pressure of the compressor 2. If the detected pressure is less than the preset pressure stored in the pressure storage means 20 in advance, it is determined that the refrigerant has leaked, and the condenser fan air volume increasing means 17 is operated. By detecting the refrigerant leak due to the pressure drop of the machine 2 and increasing the air volume of the condenser fan 16, the leaked refrigerant in the machine room 9 can be quickly diffused.

(Embodiment 5)
FIG. 11 is a block diagram of a control device for a vending machine according to the fifth embodiment of the present invention. FIG. 12 is a flowchart showing the operation of the embodiment.
As shown in FIG. 11, the condenser fan air volume increasing means 17 for increasing the air volume of the condenser fan 16, the temperature detecting means 22 for detecting the temperature of the interior 11 and the temperature detecting means for storing the temperature of the interior 11 23, a temperature setting means 27 for arbitrarily setting a temperature detected by the temperature detection means 22, a condenser fan air volume increasing means 17, a temperature detection means 22, a temperature detection means 23, and a temperature setting means 27. A connected arithmetic control unit 21e is provided.

  The operation of the control device of the vending machine configured as described above will be described below with reference to the flowchart of FIG.

  First, the power of the vending machine is turned on, and after the operator enters the temperature setting of the storage 11 (STEP 1), the operator sets the temperature of the arbitrary storage 11 using the temperature setting means 27 (STEP 2). The temperature of the interior 11 set in (5) is stored in the temperature detecting means 23 (STEP 3). Next, when the compressor 2 is operating (STEP 4), the arithmetic control unit 21e detects the temperature by the temperature detecting means 10 (STEP 5). If the temperature is equal to or lower than the temperature stored in advance in the temperature storage means 11 (STEP 6), the condenser fan air volume increasing means 17 is operated (STEP 7).

  As described above, the control device for the vending machine according to the fifth embodiment includes the condenser fan air volume increasing means 17 for increasing the air volume of the condenser fan 16, the temperature detecting means 22 for detecting the internal temperature, Temperature detecting means 23 for storing temperature, temperature setting means 27 for arbitrarily setting the temperature detected by the temperature detecting means 22, condenser fan air volume increasing means 17, temperature detecting means 22, and temperature detecting means 23 And a calculation control unit 21e connected to the temperature setting means 27. When the set temperature in the store is different depending on the vending machine, a detection temperature suitable for the set temperature in the store can be set. The calculation control unit 21e When the compressor 2 is operating, the temperature detection means 22 detects the temperature of the interior 11. If the detected temperature is equal to or higher than the preset temperature stored in the temperature detecting means 23 in advance, it is determined that the refrigerant has leaked, and the condenser fan air volume increasing means 17 is operated. By detecting the refrigerant leakage due to the temperature rise of the inner 11 and increasing the air volume of the condenser fan 16, the leakage refrigerant in the machine room 9 can be quickly diffused.

(Embodiment 6)
FIG. 13 is a block diagram of a vending machine control apparatus according to Embodiment 6 of the present invention. FIG. 14 is a flowchart showing the operation of the embodiment.
As shown in FIG. 13, the condenser fan air volume increasing means 17 for increasing the air volume of the condenser fan 16, the power consumption detecting means 24 for detecting the power consumption of the compressor 2, and the power consumption of the compressor 2 are stored. Power consumption storage means 25, power consumption setting means 28 for arbitrarily setting the power consumption detected by the power consumption detection means 24, condenser fan air volume increasing means 17, power consumption detection means 24, power consumption storage Means 25 and an arithmetic control unit 21 f connected to the power consumption setting means 28 are provided.

  The operation of the control device of the vending machine configured as described above will be described below with reference to the flowchart of FIG.

  First, after the power of the vending machine is turned on and the operator enters the power consumption setting of the compressor 2 (STEP 1), the operator sets the power consumption of any compressor 2 by the power consumption setting means 28 ( (STEP 2), the power consumption of the compressor 2 set in STEP 2 is stored in the power consumption storage means 25 (STEP 3).

  Next, when the compressor 2 is operating (STEP 4), the arithmetic control unit 21f detects the power consumption by the power consumption detection means 24 (STEP 5). If the power consumption is less than or equal to the power consumption stored in advance in the power consumption storage means 25 (STEP 6), the condenser fan air volume increasing means 17 is operated (STEP 7).

  As described above, the control device for the vending machine according to the sixth embodiment includes the condenser fan air volume increasing unit 17 that increases the air volume of the condenser fan 16 and the power consumption detecting unit 24 that detects the power consumption of the compressor 2. A power consumption storage means 25 for storing the power consumption of the compressor 2, a power consumption setting means 28 for arbitrarily setting the power consumption detected by the power consumption detection means 24, and a condenser fan air volume increasing means 17 The calculation control unit 21f connected to the power consumption detection means 24, the power consumption storage means 25, and the power consumption setting means 28, and the set temperature in the warehouse and the power consumption of the compressor 2 differ depending on the vending machine. In this case, the detection power consumption suitable for the power consumption of the compressor 2 can be set, and the arithmetic control unit 21f detects the power consumption of the compressor 2 by the power consumption detection means 24 when the compressor 2 is operating. That. If the detected power consumption is less than or equal to the set power consumption stored in the power consumption storage unit 25 in advance, it is determined that the refrigerant has leaked, and the condenser fan air volume increasing unit 17 is operated. Therefore, the leakage of the refrigerant in the machine room 9 can be quickly diffused by detecting the refrigerant leakage due to the power consumption reduction of the compressor 2 and increasing the air volume of the condenser fan 16.

  As described above, the control device of the vending machine according to the present invention can indirectly detect the leakage of the flammable refrigerant and operate the condenser fan air volume increasing means, so that the air volume of the condenser fan increases. In addition, since the leaked refrigerant in the machine room can be quickly diffused and the safety against ignition or ignition of the combustible refrigerant can be improved, it can be applied as a safety device for a refrigeration apparatus using the combustible refrigerant.

1 is a block diagram of Embodiment 1 of a control device for a vending machine according to the present invention. The flowchart of Embodiment 1 of the control device of the vending machine according to the present invention. Side sectional view of Embodiment 1 of the vending machine according to the present invention. The top view of the cooling device of Embodiment 1 of the vending machine by this invention Block diagram of Embodiment 2 of a control device for a vending machine according to the present invention. The flowchart of Embodiment 2 of the control apparatus of the vending machine by this invention Block diagram of Embodiment 3 of a control device for a vending machine according to the present invention The flowchart of Embodiment 3 of the control device of the vending machine according to the present invention. Block diagram of Embodiment 4 of the control device of the vending machine according to the present invention The flowchart of Embodiment 4 of the control apparatus of the vending machine by this invention Block diagram of Embodiment 5 of a control device for a vending machine according to the present invention The flowchart of Embodiment 5 of the control device of the vending machine according to the present invention. Block diagram of Embodiment 6 of control device for vending machine according to the present invention Flowchart of Embodiment 6 of Control Device for Vending Machine According to the Present Invention Functional block diagram of a conventional vending machine controller

Explanation of symbols

17 Condenser Fan Air Volume Increasing Means 19 Pressure Detection Means 20 Pressure Storage Means 21a Arithmetic Control Section 21b Arithmetic Control Section 21c Arithmetic Control Section 21d Arithmetic Control Section 21e Arithmetic Operation Section 21f Arithmetic Control Section 22 Temperature Detection Section 23 Temperature Storage Section 24 Power Consumption Detection means 25 Power consumption storage means 26 Pressure setting means 27 Temperature setting means 28 Power consumption setting means

Claims (7)

Condenser fan air volume increasing means for increasing the air volume of the condenser fan, pressure detecting means for detecting the pressure of the compressor, pressure storage means for storing the pressure of the compressor, the condenser fan air volume increasing means, It comprises a pressure detection means and a calculation control unit connected to the pressure storage means, and the calculation control unit detects a pressure drop of the compressor when the compressor is operating, The control device for a vending machine, wherein the condenser fan air volume increasing means is operated when the pressure is not more than the pressure stored in the pressure storage means. Condenser fan air volume increasing means for increasing the air volume of the condenser fan, temperature detecting means for detecting the internal temperature, temperature storage means for storing the internal temperature, the condenser fan air volume increasing means, and the temperature detection And a calculation control unit connected to the temperature storage unit. The calculation control unit detects the internal temperature when the compressor is operating, and stores the temperature inside the storage unit. A control device for a vending machine, wherein the condenser fan air volume increasing means is operated when the temperature is higher than a predetermined temperature. Condenser fan air volume increasing means for increasing the air volume of the condenser fan, power consumption detecting means for detecting the power consumption of the compressor, power consumption storage means for storing the power consumption of the compressor, and increase in the condenser fan air volume And a calculation control unit connected to the power consumption detection unit, and the calculation control unit is configured to detect the power consumption detection unit of the compressor when the compressor is operating. Detecting the power consumption of the compressor, and operating the condenser fan air volume increasing means when the power consumption is less than or equal to the power consumption stored in the power consumption storage means. A condenser fan air volume increasing means for increasing the air volume of the condenser fan, a pressure detecting means for detecting the pressure of the compressor, a pressure memory means for storing the pressure of the compressor, and a pressure detected by the pressure detecting means are arbitrary. And a calculation control unit connected to the pressure setting means, the condenser fan air volume increasing means, the pressure detection means, the pressure storage means, and the pressure setting means. The pressure detecting means detects a pressure drop when the compressor is operating, and operates the condenser fan air volume increasing means when the pressure is below the pressure stored in the pressure storing means. Vending machine control device. The condenser fan air volume increasing means for increasing the air volume of the condenser fan, the temperature detecting means for detecting the internal temperature, the temperature storage means for storing the internal temperature, and the temperature detected by the temperature detecting means are arbitrarily set. And a calculation control unit connected to the condenser fan air volume increasing unit, the temperature detection unit, the temperature storage unit, and the temperature setting unit. When the compressor is operating, the temperature detecting means detects the internal temperature, and the condenser fan air volume increasing means is operated when the temperature is equal to or lower than the temperature stored in the temperature storing means. Vending machine control device. The condenser fan air volume increasing means for increasing the air volume of the condenser fan, the power consumption detecting means for detecting the power consumption of the compressor, the power consumption storing means for storing the power consumption of the compressor, and the power consumption detecting means Connected to the power consumption setting means for arbitrarily setting the power consumption to be detected, the condenser fan air volume increasing means, the power consumption detection means, the power consumption storage means, and the power consumption setting means. The calculation control unit is configured such that when the compressor is operating, the power consumption detection unit of the compressor detects the power consumption of the compressor and is stored in the power consumption storage unit. A control device for a vending machine, wherein when the power consumption is less than or equal to power consumption, the condenser fan air volume increasing means is operated. The automatic selling according to any one of claims 1 to 6, wherein the condenser fan air volume increasing means is provided with a device for increasing the applied voltage of the condenser fan or a device for increasing the frequency of the applied voltage. Machine control device.

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