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1. 发明专利

JPH04236063A APPARATUS FOR TRANSFERRING COLD HEAT 失效
公开(公告)号：JPH04236063A
公开(公告)日：1992-08-25
申请号：JP222491
申请日：1991-01-11
申请人： SANKI ENG CO LTD
发明人： MIZUSHIMA SHIGERU , KODERA KOICHI , NAKAZAWA MASARU
IPC分类号： F24F5/00 , F25B1/00
摘要： PURPOSE:To drastically reduce from the conventional requirement the energy expended on the transfer of cold heat source from a refrigerating machine to a load such as an air conditioner in a system for supplying cold heat source from the refrigerating machine to the load through a cold heat source transfer channel. CONSTITUTION:On the side of a load a load-side evaporator 55 for exchange of heat with the hot/warm hear of a load is placed. To this load-side evaporator 55a refrigeration-side evaporator 43 is connected by a cold heat source transfer channel 61 which forms a circulation channel composed of a supply line 63 and a return line 65. On the side of the refrigerating machine 41 in the supply line 63, a liquid-receiving tank 67 which holds refrigerant in a liquid state (converts to both gaseous and liquid phases) is placed.

2. 发明专利

JPH0486434A COOLING DEVICE 失效
公开(公告)号：JPH0486434A
公开(公告)日：1992-03-19
申请号：JP20314990
申请日：1990-07-31
申请人： SANKI ENG CO LTD
发明人： TANAKA HIROKUNI , SUZUKI MITSUO , KODERA KOICHI , IIJIMA KAZUAKI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F24F5/00
摘要： PURPOSE:To sufficiently utilize the cold heat outside air to supplement the cooling capacity sufficiently and miniaturize an indoor device by a method wherein the outside air condensor for heat exchanging between refrigerant and the outside air is disposed, and an evaporator is disposed below a condensor and the outside air condensor. CONSTITUTION:An outlet port of a condensor 25 and one side of an evaporator 23 are connected to form a pipe passage 29. The other side of the evaporator 23 and one side of a condensor 25 are connected to form a pipe passage 33. A pipe passage 37 branched from the pipe passage 33 and connected to the pipe passage 29 is formed. An outside air condensor 39 for heat exchanging between refrigerant and outside air is disposed at a location above the condensor 25. The evaporator 23 is disposed at a location sufficiently below the condensor 25. A cold heat source supplying pipe 27 is provided with a control valve 45 for controlling a pressure in the pipe passage 33 detected by a pressure sensor 43. With such an arrangement above, the cold heat of the outside air in winter season can securely be utilized at a computer room or the like. The shortage of cooling capacity can be supplemented without feeding any cold water into the room and then the indoor device can be miniaturized.

3. 发明专利

JPH0486432A COOLING DEVICE AND COOLING/HEATING DEVICE 失效
公开(公告)号：JPH0486432A
公开(公告)日：1992-03-19
申请号：JP20314790
申请日：1990-07-31
申请人： SANKI ENG CO LTD
发明人： KODERA KOICHI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F24F5/00
摘要： PURPOSE:To enhance the condensing efficiency of a condenser by a method wherein a gas-liquid separating device is disposed above a liquid receiving tank and a float is disposed within a main body of a tank and a valve for opening a lower opening of the main body of the tank is provided. CONSTITUTION:A gas-liquid separator device 37 has a main body 39 of a tank to be disposed above a liquid receiving tank 21. A pair of separated ends 41 and 43 are opened at a gaseous part 38 at an upper part of the main body 39 of the tank. A lower opening 47 of the main body 39 of the tank and an upper gaseous part 49 in the liquid receiving tank 21 are connected and then a drain pipe passage 45 is disposed. A float 51 moving up and down in response to a variation in liquid surface of refrigerant is stored in the main body 39 of the tank. One end of a connector member 3 is fixed to the float 51. A valve member 55 is disposed at the other end of the connector member 53. With such an arrangement above, the refrigerant containing gaseous substance and liquid substance within the pipe passage 33 is condensed only in its light gaseous substance at a condenser 25, any liquid refrigerant is not contained in the refrigerant supplied to the condenser 25, resulting in that a condensing efficiency is substantially improved.

4. 发明专利

JPH0476335A COOLING DEVICE AND COOLING/HEATING DEVICE 失效
公开(公告)号：JPH0476335A
公开(公告)日：1992-03-11
申请号：JP18843490
申请日：1990-07-16
申请人： SANKI ENG CO LTD
发明人： KODERA KOICHI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F24F5/00
摘要： PURPOSE:To provide a substantial improvement of a condensing efficiency of a condensor by a method wherein a gas-liquid-separator device is disposed at the second pipe passage and at the same time the gas-liquid separator device is comprised of a tank main body and a liquid communication pipe passage. CONSTITUTION:At a cooling device, when a liquid pump 31 is operated, refrigerant in a liquid accepting tank 21 passes through the first pipe passage 29 and flows into an evaporator 23, where it accepts an evaporating action to cool indoor air. The refrigerant passes through the second pipe passage 33, flows into a condensor 25, receives a condensing action, thereafter it passes through the third pipe passage 35 and it circulates within the liquid accepting tank 21. At a cooling/heating device, a cooling operation is carried out such that an indoor evaporator also acting as a condensor 51 is used as an evaporator and the operation is similarly carried out. In turn, a heating operation is carried out such that the refrigerant within the liquid accepting tank 21 passes through the fourth pipe passage 57 and flows into an evaporator 53, the refrigerant receiving an evaporating action passes through the fifth pipe passage 61 and flows into the indoor evaporator also acting as the condensor 51, where it receives a condensing action and the refrigerant that heated the indoor air passes through the sixth pipe passage 65 and is circulated within the liquid accepting tank 21.

5. 发明专利

JPH0476333A COOLING AND HEATING DEVICE 失效
公开(公告)号：JPH0476333A
公开(公告)日：1992-03-11
申请号：JP18843290
申请日：1990-07-16
申请人： SANKI ENG CO LTD
发明人： TANAKA HIROKUNI , SUZUKI MITSUO , KODERA KOICHI , IIJIMA KAZUAKI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F24F5/00
摘要： PURPOSE:To enable an operation of a liquid pump to be stopped during a heating operation by a method wherein an indoor evaporator also acting as a condensor is disposed at a location above a liquid accepting tank and an evaporator is disposed at a location below the liquid accepting tank. CONSTITUTION:During a heating operation, a cold source of cold water is supplied to a cold heat source supplying pipe 27 of a condensor 25, for example. A liquid pump 31 is operated. Then, refrigerant in a liquid accepting tank 21 passes through the first pipeline 29, flows into an indoor evaporator also acting as a condensor 23 so as to cool indoor air while accepting an evaporating action and it passes through the second pipe line 37, flows into the condensor 25, where it receives a condensing action. After this operation, it passes through the third pipe line 39 and it circulates within the liquid accepting tank 21. In turn, during a heating operation, hot source of hot water, for example, is supplied to a hot heat source supplying pipe 28 of an evaporator 26 and then a liquid pump 31 is stopped. The refrigerant within the liquid accepting tank 21 passes through the fourth pipe line 41 and flows into the evaporator 26 due to the fact that the evaporator 26 is disposed below the liquid accepting tank 21, where it receives an evaporating action and is gasified. The refrigerant passes through the third pipe passage 45, flows into an indoor evaporator also acting as the condensor 23, where it receives a condensing action to heat indoor air and thereafter it passes through the sixth pipe line 47 by its own weight and naturally circulated within the liquid accepting tank 21.

6. 发明专利

JPH04236065A LIQUID SUPPLYING AMOUNT CONTROL METHOD UPON COOLING OPERATION IN COOLING OR COOLING AND HEATING DEVICE 失效
公开(公告)号：JPH04236065A
公开(公告)日：1992-08-25
申请号：JP222691
申请日：1991-01-11
申请人： SANKI ENG CO LTD
发明人： KODERA KOICHI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F25B1/00 , F24F5/00 , F28D15/02
摘要： PURPOSE:To provide liquid supplying amount control method upon cooling operation in a cooling or a cooling and heating device for controlling the amount of refrigerant supplied to an evaporator by a liquid pump upon cooling operation wherein refrigerant is supplied surely to the evaporator by the liquid pump and liquid supplying amount is controlled without empolying any pressure difference sensor even when an evaporator is arranged below a condenser. CONSTITUTION:Upon the start-up of cooling or cooling and heating device, a refrigerant temperature in a liquid receiving tank 21 is reduced to a predetermined temperature, then, a liquid pump 31 is started and the number of rotations of the liquid pump 31 is controlled so that the outlet side pressure of the liquid pump 31 becomes a pressure predetermined in accordance with the operation set temperature of refrigerant.

7. 发明专利

JPH04174259A LOW AND HIGH TEMPERATURE MEDIUM COOLING REFRIGERATOR 失效
公开(公告)号：JPH04174259A
公开(公告)日：1992-06-22
申请号：JP30135290
申请日：1990-11-07
申请人： SANKI ENG CO LTD , TOYOTA MOTOR CORP
发明人： WATABE HITOSHI , KODERA KOICHI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU , NISHIO ISAO
IPC分类号： F25B1/00
摘要： PURPOSE:To reduce capacity of a compressor of a refrigerating cycle by coupling both ends of a cooling circuit in which a first switching valve, a refrigerant cooler using natural cold, a second switching valve are sequentially interposed at the upper side of a low pressure receiver. CONSTITUTION:If temperature of heat medium air to be cooled is, for example, higher than natural cold temperature, a compressor 20 is stopped, a first switching valve 33, a second switching valve 35 are opened, and then refrigerant is circulated in a passage of an evaporator 28, a first low pressure gas line 30, a low pressure receiver 24, a refrigerant cooler 34, the receiver 34, a liquid pump 29 and the evaporator 28. In this case, the refrigerant is heat exchanged with natural cold such as the atmosphere, well water, etc., by the cooler 34, and the medium air can be reduced at its temperature. That is, the capacity of the compressor 20 of a refrigerating cycle can be reduced.

8. 发明专利

JPH04267826A AIR-CONDITIONING SYSTEM FOR ANIMAL EXPERIMENT INSTALLATION 失效
公开(公告)号：JPH04267826A
公开(公告)日：1992-09-24
申请号：JP2726191
申请日：1991-02-21
申请人： SANKI ENG CO LTD
发明人： MIZUSHIMA SHIGERU , KODERA KOICHI , NAKAZAWA MASARU
IPC分类号： A01K1/00 , A01K1/03 , F24F3/044
摘要： PURPOSE:To recover the heat of air discharged from animal chambers without mutually polluting the animal chambers by connecting the water-supplying pipe and the water-returning pipe of a heat exchanger to a water heat source heat pump chiller, the heat exchanger being arranged in an air-discharging duct for discharging the air from the animal chambers. CONSTITUTION:Air-conditioning air is supplied from an air conditioner 63 to respective animal chambers 61 through air-supplying ducts 77, and air in the animal chambers is discharged through airdischarging ducts 85. The air- discharging ducts 85 are collected into an air-discharging duct 91 through high performance dampers 87 and an air-discharging header 89, and a heat exchanger 94 for exchanging heat between the discharged air and water is disposed in the air-discharging duct 91. The water-supplying pipe 95 and the water-returning pipe 96 of the heat exchanger 94 are connected to a water heat source heat pump chiller 98.

9. 发明专利

JPH04236066A LIQUID SUPPLYING AMOUNT CONTROL METHOD UPON COOLING OPERATION IN COOLING OR COOLING AND HEATING DEVICE 失效
公开(公告)号：JPH04236066A
公开(公告)日：1992-08-25
申请号：JP222791
申请日：1991-01-11
申请人： SANKI ENG CO LTD
发明人： KODERA KOICHI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F25B1/00 , F24F5/00 , F28D15/02
摘要： PURPOSE:To provide liquid supplying amount control method upon cooling operation in a cooling or a cooling and heating device for controlling the amount of refrigerant supplied to an evaporator by a liquid pump upon cooling operation wherein refrigerant is supplied surely to the evaporator by the liquid pump and liquid supplying amount is controlled without empolying any pressure difference sensor even when an evaporator is arranged below a condenser. CONSTITUTION:Upon the start-up of cooling or cooling and heating device, a refrigerant temperature in a liquid receiving tank 21 is reduced to a predetermined temperature, then, a liquid pump 31 is started and the number of rotations of the liquid pump 31 is controlled so that the outlet side pressure of the liquid pump 31 becomes a pressure predetermined in accordance with the operation set temperature of refrigerant.

10. 发明专利

JPH0486433A COOLING DEVICE AND COOLING/HEATING DEVICE 失效
公开(公告)号：JPH0486433A
公开(公告)日：1992-03-19
申请号：JP20314890
申请日：1990-07-31
申请人： SANKI ENG CO LTD
发明人： KODERA KOICHI , KAWASHIMA AKIYUKI , NAKAZAWA MASARU
IPC分类号： F24F5/00
摘要： PURPOSE:To enhance the condensing efficiency of a condenser by a method wherein a part of a drain pipe passage of a main body of a tank of a gasliquid- separator device is projected upwardly up to a maximum liquid level surface of refrigerant within a main body of the tank so as to form a liquid level adjusting part. CONSTITUTION:A gas-liquid separator device 37 has a main body 39 of a tank disposed above a liquid receiving tank 21. A pair of separated ends 41 and 43 are opened at an upper gaseous part 38 in the main body 39 of the tank. A lower opening of the main body 39 of the tank and the upper gaseous part 49 are connected and a drain pipe passage 45 is disposed. A part of the drain pipe passage 45 is projected upwardly up to a maximum liquid level surface L of refrigerant within the main body 39 of the tank and then a liquid level adjusting part 47 is formed. With such an arrangement, only light gaseous substance is fed from the separated end 43 at the condenser 25 toward the condenser 25, condensed at the condenser 25 and in turn refrigerant to be supplied to the condenser 25 does not contain any liquid refrigerant, but it is possible to improve a condensing efficiency of the condenser 25.

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