JP2004271080A - Integrated equipment of cooling device and heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide integrated equipment utilizing exhaust heat from a cooling device for a heat source of a heating device. <P>SOLUTION: During the operation of the heating device 2, a refrigeration solenoid valve 4 is closed and a heating solenoid valve 22 is opened. Then, high temperature and high pressure gas refrigerant from a compressor 3 is fed to a heat exchanger 15 in the heating device through the heating solenoid valve 22, as shown by a dashed line arrowmark B, cooled by a heat exchanger fan 17 and fed to a condenser 5 in the cooling device 1. During passage through the condenser 5, it becomes liquid refrigerant of room temperature and high pressure which is depressurized and expanded by an expansion valve 10, fed to a cooler 11, evaporated by heat exchange in the cooling device and fed as low pressure gas refrigerant to the compressor 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an integrated device of a cooling device and a heating device, and more particularly to an integrated device that uses heat discharged from a cooling device such as a refrigerator or a freezer for a heating device such as a warmer.
[0002]
[Prior art]
Conventionally, a refrigerator and a warmer each employ a single heat source, and there is no apparatus that utilizes the exhaust heat of the refrigerator. In particular, in commercial kitchen appliances, cooling appliances and heating appliances are mixed. However, integrated appliances using respective heat sources have not been put to practical use.
[0003]
[Problems to be solved by the invention]
As described above, according to the related art, while the cooling equipment and the heating equipment are mixedly arranged in the kitchen, each uses a single heat source, so that space saving or energy saving is not sufficiently achieved. Was. The running cost was also high. Therefore, an object of the present invention is to provide an integrated device that uses the exhaust heat of a cooling device for a heating device to save energy, save space, and reduce running costs.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is an integrated device of a cooling device and a heating device, wherein the cooling device condenses a high-temperature and high-pressure gas refrigerant from a compressor into a normal-temperature and high-pressure liquid refrigerant. After the liquid refrigerant is decompressed and expanded, it has a refrigerant passage that forms a refrigeration cycle that is vaporized by heat exchange through a cooler and sent to a compressor to a low-pressure gas refrigerant, and the heating device has a heat exchanger, The portion of the refrigerant passage through which the high-temperature and high-pressure gas refrigerant passes has a heat exhaust passage that branches off from the refrigerant passage and returns to the refrigerant passage through the heat exchanger. An integrated device is provided, in which a gas refrigerant is sent to heat a heating device through the heat exchanger.
[0005]
In the vicinity where the refrigerant passage and the exhaust heat passage are branched, a refrigeration solenoid valve and a warming solenoid valve are provided on the refrigerant passage side and the exhaust heat passage side, respectively. You may comprise so that it may open and close according to the driving | running state of a cooling device and a heating device.
[0006]
A liquid pipe temperature sensor may be provided in the refrigerant passage near the outlet of the condenser, and the condenser may be controlled in accordance with the condenser outlet temperature measured by the sensor. Further, the heating device may be configured to have an auxiliary heater.
[0007]
The cooling device may be a cold table, and the heating device may be a dish warmer. Further, the cooling device may be a refrigerator or a freezer, and the heating device may be a thawing device. Further, the cooling device may be a refrigerator or a freezer, and the heating device may be an introduced outside air heating device. Further, the cooling device may be a refrigerator or a freezer, and the heating device may be a puller.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows an embodiment of an integrated device of a cooling device and a heating device according to the present invention. In the embodiment of FIG. 1, a cooling device 1 and a heating device 2 are arranged adjacent to each other. A refrigerant that connects the compressor 3, the refrigeration solenoid valve 4, the condenser 5, the receiver 6, the dryer 7, the solenoid valve 8, the sight glass 9, the expansion valve (capillary) 10, and the cooler 11 to the refrigeration equipment 1 as a closed loop. A passage 12 is provided, and the refrigerant flows through the refrigerant passage 12 as shown by a solid arrow A during the sole operation of the refrigeration equipment, thereby forming a refrigeration cycle. The condenser 5 and the cooler 11 are provided with a condenser fan 13 and a cooler fan 14, respectively.
[0009]
A heat exchanger 15 and an auxiliary heater 16 are arranged in the heating device 2, and are provided with a heat exchanger fan 17 and a heater fan 18, respectively. An exhaust heat passage 19 is provided between the cooling device 1 and the heating device 2. The exhaust heat passage 19 branches from the refrigerant passage 12 and passes through the heat exchanger 15 to the refrigerant passage 12 in parallel with a portion of the refrigerant passage 12 from the compressor 3 to the condenser 5 through which the high-temperature and high-pressure gas refrigerant passes. It is provided to return. During the operation of the thermal equipment, the refrigerant flows through the exhaust heat passage 19 as shown by a dashed arrow B. A branch point 20 from the refrigerant passage 12 to the exhaust heat passage 19 is provided between the compressor 3 and the refrigeration solenoid valve 4, and a return point 21 from the exhaust heat passage 19 to the refrigerant passage 12 is a refrigeration solenoid valve 4 and a condenser 5. That is, the exhaust heat passage 19 is provided in parallel with the refrigerant passage 12 with the refrigeration solenoid valve 4 interposed therebetween. Near the branch point 20 and the return point 21 of the exhaust heat passage 19, a warming solenoid valve 22 and a check valve 23 are provided, respectively. Further, a liquid tube temperature sensor 24 is provided near the outlet of the condenser 5.
[0010]
During the independent operation of the refrigeration equipment 1, the refrigeration solenoid valve 4 opens, the refrigeration solenoid valve 22 closes, and the refrigerant flows as indicated by the solid arrow A. When the heating device 2 is operated, the cooling electromagnetic valve 4 is closed, the heating electromagnetic valve 22 is opened, and the refrigerant flows as indicated by a dashed arrow B.
[0011]
During the operation of the heating device 2, the high-temperature and high-pressure gas refrigerant from the compressor 3 passes through the warming solenoid valve 22 and is sent to the heat exchanger 15 in the heating device, where it is cooled by the heat exchanger fan 17 and cooled. It is sent to the condenser 5 of the device 1. While passing through the condenser 5, it becomes a normal-temperature and high-pressure liquid refrigerant, is decompressed and expanded by an expansion valve 10, is sent to a cooler 11, and is vaporized by heat exchange in a refrigeration equipment, and is mixed with a low-pressure gas refrigerant. And sent to the compressor 3.
[0012]
The temperature of the outlet of the condenser 5 is detected by the liquid tube temperature sensor 24, and based on the detected temperature, the condenser fan 13 is turned on and off, and the temperature is controlled so as to be an appropriate temperature. That is, control is performed so that the cooling performance of the cooling device is maintained and the temperature in the heating device obtained as exhaust heat is maintained at the maximum. In the heating device 2, when the amount of heat is insufficient only by the exhaust heat from the cooling device 1, the auxiliary heater 16 is turned on to control the temperature in the heating device to an appropriate temperature.
[0013]
In conjunction with the control of the condenser fan and the control of the auxiliary heater, in consideration of the operating conditions of the cooling equipment, the ambient temperature, the highest attainment temperature in the heating equipment storage obtained by using the exhaust heat of the cooling equipment, A combination of devices used as a cooling device and a heating device is selected. Also, if the exhaust heat obtained from a single cooling device is not constant due to the thermo operation of the cooling device, a heating device that can tolerate some temperature devices or a combination of multiple cooling devices to obtain a constant temperature Equipment may be selected.
[0014]
Next, an embodiment of an appropriate combination of a cooling device and a heating device in the integrated device of the present invention is shown in FIGS. The embodiment shown in FIGS. 2 and 3 is an integrated device using a cold table 25 as a cooling device and a dish warmer 26 as a heating device. The cold table 25 and the dish warmer 26 are arranged side by side to discharge heat from the cold table 25. Is the heat source of the dish warmer 26. In this embodiment, since the exhaust heat of the cold table 25 is not exhausted but sent to the dish warmer 26, the working environment is improved, and advantages of energy saving and space saving are obtained.
[0015]
The embodiment shown in FIG. 4 is an integrated device that uses a refrigerator or a freezer 27 as a cooling device and uses a thawing device 28 as a heating device, and uses exhaust heat of the refrigerator or the freezer 27 as a heat source of the thawing device 28, The thawed product is stored in the refrigerator 27. In this embodiment, since the exhaust heat of the refrigerator or the freezer 27 is not discharged but sent to the defroster 28, the working environment is improved, and the advantage of energy saving is obtained.
[0016]
The embodiment shown in FIGS. 5 and 6 is an integrated device using a refrigerator or a freezer 29 as a cooling device and a heating device for introducing outside air as a heating device. It is used for heating 30 to achieve energy saving of the air conditioner. In this embodiment, the exhaust heat of the refrigerator or freezer 29 is not exhausted but is sent to the intake duct 32 of the ventilation fan 31, so that the working environment is improved and the advantage of energy saving is obtained.
[0017]
The embodiment shown in FIG. 7 is an integrated device using a refrigerator or a freezer 33 as a cooling device and a puller 34 as a heating device. The waste heat of the refrigerator or the freezer 33 is used as a puller 34 to ferment bread. It is something to do. In this embodiment, since the waste heat of the refrigerator or freezer 33 is not discharged but sent to the puller 34, the working environment is improved and the advantage of energy saving is obtained.
[0018]
【The invention's effect】
According to the present invention, an integrated device that uses exhaust heat of a cooling device for a heating device is provided, so that energy saving, space saving, and reduction in running cost can be achieved. In particular, by installing both the cooling equipment and the heating equipment in a close place of the same business, the advantages of energy saving, space saving, improvement of working environment and reduction of running cost are remarkably obtained. These advantages are further increased by appropriately selecting the combination of models used as the cooling and heating devices and using the auxiliary heater.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a refrigeration cycle in an integrated device of the present invention.
FIG. 2 is a perspective view showing a first embodiment of the integrated device of the present invention.
FIG. 3 is a schematic front view showing a refrigeration cycle in the integrated device of FIG.
FIG. 4 is a schematic front view showing a refrigeration cycle in a second embodiment of the integrated device of the present invention.
FIG. 5 is a schematic side view showing a refrigeration cycle in a third embodiment of the integrated device of the present invention.
FIG. 6 is a schematic front view of the integrated device of FIG. 5;
FIG. 7 is a schematic front view showing a fourth embodiment of the integrated device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cooling apparatus 2 Heating apparatus 3 Compressor 4 Refrigeration solenoid valve 5 Condenser 6 Receiver 7 Dryer 8 Solenoid valve 9 Sight glass 10 Expansion valve 11 Cooler 12 Refrigerant passage 13 Condenser fan 14 Cooler fan 15 Heat exchanger 16 Auxiliary Heater 17 Heat exchanger fan 18 Heater fan 19 Heat exhaust passage 20 Branch point 21 Return point 22 Preserving solenoid valve 23 Check valve 24 Liquid pipe temperature sensor 25 Cold table 26 Dish warmers 27, 29, 33 Refrigerator, freezer 28 Defroster 30 Outside air 31 Ventilation fan 32 Intake duct 34 Purfa

Claims (8)

A cooling / heating device that is an integrated device of a cooling device and a heating device.The cooling / heating device condenses a high-temperature and high-pressure gas refrigerant from a compressor into a normal-temperature and high-pressure liquid refrigerant and expands the liquid refrigerant under reduced pressure. Has a refrigerant passage that forms a refrigeration cycle of being vaporized by heat exchange through a low-pressure gas refrigerant and sending it to a compressor, the heating device has a heat exchanger, and the high-temperature high-pressure gas refrigerant in the refrigerant passage passes therethrough. A heat-exhaust passage branching from the refrigerant passage and returning to the refrigerant passage through the heat exchanger, and sending the high-temperature and high-pressure gas refrigerant to the exhaust heat passage through the heat exchanger. Integrated equipment characterized by heating inside the heating equipment. In the vicinity where the refrigerant passage and the exhaust heat passage branch off, the refrigerant passage side and the exhaust heat passage side have a refrigeration solenoid valve and a warming solenoid valve, respectively, the refrigeration solenoid valve and the warming solenoid valve, The integrated device according to claim 1, wherein the integrated device opens and closes in accordance with an operation state of the cooling device and the heating device. The integrated device according to claim 1, further comprising a liquid pipe temperature sensor in a refrigerant passage near an outlet of the condenser, and controlling the condenser according to the condenser outlet temperature measured by the sensor. The integrated device according to claim 1, wherein the heating device has an auxiliary heater. 5. The integrated device according to claim 1, wherein the cooling device is a cold table, and the heating device is a dish warmer. 6. The integrated device according to any one of claims 1 to 4, wherein the cooling device is a refrigerator or a freezer, and the heating device is a thawing device. The integrated device according to any one of claims 1 to 4, wherein the cooling device is a refrigerator or a freezer, and the heating device is an introduced outside air heating device. The integrated device according to any one of claims 1 to 4, wherein the cooling device is a refrigerator or a freezer, and the heating device is a puller.

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