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1. 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.

2. 发明专利

JPH04174258A REFRIGERATOR FOR COOLING BOTH LOW AND HIGH TEMPERATURE MEDIUMS 失效
公开(公告)号：JPH04174258A
公开(公告)日：1992-06-22
申请号：JP30135190
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 interposing a first switching valve, a refrigerant cooler, a second switching valve, and a gas/liquid separator on the way of a cooling circuit, and coupling the separator to a low pressure receiver via a drain conduit. CONSTITUTION:If temperature of heat medium air to be cooled is higher than natural cold temperature, a compressor 20 is stopped, and refrigerant is circulated in a passage of an evaporator 28, a gas/liquid separator 25, a refrigerant cooler 34, a low pressure receiver 24, a liquid pump 29 and the evaporator 28. Thus, the refrigerant is heat exchanged with the heat medium air to be cooled by the evaporator 28 to be evaporated, the evaporated refrigerant is heat exchanged with natural cold such as the atmosphere, well water, etc., by the cooler 34, cooled, and condensed. That is, if the temperature of the heat medium air to be cooled is higher than the natural cold temperature, the temperature of the air can be reduced by using the natural cold without using a refrigerating cycle. Thus, the capacity of the compressor 20 of a refrigerating cycle can be reduced.

3. 发明专利

JPH02223773A REFRIGERATING DEVICE FOR COOLING, WHICH IS USED IN COMBINATION BOTH FOR LOW-TEMPERATURE MEDIUM AND HIGH-TEMPERATURE MEDIUM 失效
公开(公告)号：JPH02223773A
公开(公告)日：1990-09-06
申请号：JP4453089
申请日：1989-02-23
申请人： SANKI ENG CO LTD
发明人： OOIZUMI TOMOSUKE , YAMASHITA AKIO , WATABE HITOSHI
IPC分类号： F25B1/00
摘要： PURPOSE:To effect cooling from a low temperature zone to a high temperature zone reasonably and economically by a method wherein the title device is constituted so that cooling operation is effected by incorporating a refrigerating cycle, approximate to refrigerant natural circulation and not employing compression, into a normal refrigerating cycle while the cooling operation is permitted to employ a compressor when cooling function is not achieved by said cooling operation of the cycles. CONSTITUTION:When cooling capacity is short by cooling operation, approximate to refrigerant natural circulation and not employing a compressor 20, first and fifth changeover valves 32, 41 are closed, a second changeover valve 34 is opened and a compressor 20 is driven whereby refrigerant is circulated in the route of compressor 20 condenser 22 second expansion valve 35 indirect cooler 36 compressor 20. At the same time, the fourth changeover valve 39 of a first low-pressure gas line 29 is closed to circulate the refrigerant through the route of low-pressure receiver 25 liquid pump 26 evaporator 28 indirect cooler 36 low-pressure receiver 26. According to this method, the refrigerant, circulating through the route of the side of the evaporator 28, is cooled forcibly by the cold refrigerant at the side of the compressor 20 in the indirect cooler 36 whereby medium to be cooled, which passes through the evaporator 28, may be cooled by the natural circulation of the refrigerant.

4. 发明专利

JPH0240463A THREE-PIPE TYPE WATER COOLING HEAT PUMP UNIT 失效
公开(公告)号：JPH0240463A
公开(公告)日：1990-02-09
申请号：JP18801588
申请日：1988-07-29
申请人： SANKI ENG CO LTD
发明人： OOIZUMI TOMOSUKE , WATABE HITOSHI , ISHIDA HIROICHI
IPC分类号： F25B29/00 , F25B13/00
摘要： PURPOSE:To make possible not only air-conditioning in each room individually but also the humidity control of each room without the need of any surplus heat source by connecting a water cooling heat pump and a direct expansion type fan coil unit by three-pipe type piping. CONSTITUTION:A water cooling heat pump 1, a direct expansion type fan coil unit (fan coil) 2 arranged in each room and three-pipe type piping 3 of refrigerant are provided. A screw compressor 11 of a two-stage compressing cycle not only recovers refrigerant liquid effectively but also controls the increase of high pressure by heat pump operation to improve refrigerating efficiency thereof and further makes refrigerant carrying possible by a three-pipe type together with the setting of an intermediate cooler 12. On the other hand, as for individual air-conditioning in each room, the adaptability to load increase is given and leakage corrective action is contrived by using the direct expansion type fan coil while humidity control by dehumidification and reheating is made possible because of providing a hot gas coil.

5. 发明专利

JPH02302560A COOLING REFRIGERATOR FOR LOW TEMPERATURE AND HIGH TEMPERATURE MEDIUM 失效
公开(公告)号：JPH02302560A
公开(公告)日：1990-12-14
申请号：JP12195989
申请日：1989-05-15
申请人： SANKI ENG CO LTD
发明人： WATABE HITOSHI , WATANABE SHIGETO
IPC分类号： F25B1/00 , F25B43/00 , F25D13/00
摘要： PURPOSE:To cool thermal medium air to be cooled without generating any excessive dehumidification even at a high temperature and a high humidity by a method wherein a low pressure receiver and a first low pressure gas line are connected to each other through a cooling circuit having a first changing-over valve, a refrigerant cooling unit and a second changing- over valve, and then a third changing-over valve is arranged at the low pressure receiver rather than a connecting part with the cooling circuit in the first low pressure gas line. CONSTITUTION:Under a normal operation, a high pressure gas compressed by a compressor 20 is liquefied by a condensor 22, expanded by an expansion valve 26 to make liquid from the gas. The liquid is heat exchanged with thermal medium air to be cooled through an evaporator 28 to make gas from the liquid. The gas returns to a low pressure receiver 24 through a first low pressure gas line 30 and then the gas is sent to the compressor 20. In case that a temperature of the thermal medium air to be cooled is higher than a natural cold heat temperature, the compressor 20 is stopped, the first changing-over valve 53 and the second changing-over valve 35 are opened and then the third changing-over valve 31 and the fourth changing-over valve 25 are closed. The refrigerant circulates through the evaporator 28, a refrigerant cooling unit 34, the low pressure receiver 24, a liquid pump 29 and the evaporator 28. The refrigerant is heat exchanged with the thermal medium air, evaporated, heat exchanged with the surrounding air or well water by the refrigerant cooling unit 34, cooled and condensed. In this case, even if the thermal medium air to be cooled shows a high temperature and a high humidity it is possible to perform a cooling operation without generating any excessive dehumidification.

6. 发明专利

JPH0195256A DIRECT EXPANSION REFRIGERATOR 失效
公开(公告)号：JPH0195256A
公开(公告)日：1989-04-13
申请号：JP25065487
申请日：1987-10-06
申请人： SANKI ENG CO LTD
发明人： WATABE HITOSHI , OOIZUMI TOMOSUKE
IPC分类号： F25B1/10
摘要： PURPOSE: To improve a refrigeration efficiency and increase the capacity of a refrigerator without great expenses by installing a booster and its bypass pipe halfway of a suction pipe and at the same time providing a means for cooling the discharge gas. CONSTITUTION: A booster T where a bypass pipe Lb is provided in parallel and its discharge gas cooling means Eg are provided side by side halfway to a low-pressure suction gas pipe L1 of a refrigerant compression refrigerator. When the pressure of a low-pressure refrigerant gas being sucked from evaporators E1 and E2 is increased by the pressurizing machine T halfway to a suction pipe, the temperature of the discharge gas increases due to heat build-up based on a compression operation, so that the gas is cooled by the cooling means Eg and is sucked by a refrigerator. Therefore, the refrigerant gas from the evaporator is further pressurized and sucked, so that the suction pressure of low stages Cl1 and Cl2 rises in the compressor of the refrigerator and at the same time that of high stages Ch1 and Ch2 also rises, thus improving an operating efficiency.

7. 发明专利

JPH05312351A 失效
公开(公告)号：JPH05312351A
公开(公告)日：1993-11-22
申请号：JP11611892
申请日：1992-05-08
申请人： SANKI ENG CO LTD
发明人： TOMITA HIROAKI , WATABE HITOSHI , OOIZUMI TOMOSUKE
IPC分类号： F24F3/044
摘要： PURPOSE:To improve the operating efficiency of a absorption type refrigerating machine by cooling the cleaning coil of an outer air-conditioning machine by a heat pump. CONSTITUTION:Cold water, coming from a main supply tube 15 which supplies the cold water from an absorption type refrigerating machine 11 into a main air-conditioning machine 13, passes through a first pipeline 45 to enter the evaporator 21 of an outer air-conditioning machine 27 and is cooled by heat exchange, then, enters a cleaning coil 35 through a second pipeline 47. Then, heat exchange is effected in the cleaning coil 35 and, thereafter, is circulated again into the main supply tube 15 through a third pipeline 149. On the other hand, hot-water, coming from a main returning pipe 17, connecting the main air-conditioning machine 13 to the absorption type refrigerating machine 11, enters the condenser 25 of the outer air-conditioning machine 27 and is heated, then, enters a heating coil 33 through a fifth pipeline 53. Thereafter, heat exchange is effected in the returning pipeline 17 through a sixth pipeline 55. According to this method, the operating efficiency of the absorption type refrigerating machine 11 is improved.

8. 发明专利

JPH0225667A AIR HEAT SOURCE HEAT PUMP ALL OPEN AIR CONDITIONING UNIT 失效
公开(公告)号：JPH0225667A
公开(公告)日：1990-01-29
申请号：JP17520088
申请日：1988-07-15
申请人： SANKI ENG CO LTD
发明人： WATABE HITOSHI , OOIZUMI TOMOSUKE , TOMITA HIROAKI
IPC分类号： F24F3/044 , F24F3/14 , F24F6/00 , F25B29/00 , F28D5/00 , F28D19/00
摘要： PURPOSE:To simplify the utility and save energy used for regeneration by connecting a high pressure gas line having solenoid valve and a high pressure liquid line to the regenerator, and disposing a tray to collect drain under the direct expansion coil and the regenerator. CONSTITUTION:Part of the high-temperature, high-pressure refrigerant gas which has been compressed by the compressor 56 enters into the regenerator 35 where it becomes a cooled high-pressure liquid by heating the open air OA, and the remainder enters into the condenser 45 where it is cooled by the exhaust air EA and drain to become a high-pressure liquid, and both of them enters into the receiver 58. The refrigerant which has been turned into a low-pressure liquid by an expansion valve 61a is evaporated by the direct expansion coil 34 to become a low-pressure gas, which returns to the compressor 56 via an accumulator 59. To describe the above processesing a wet air curve diagram, the open air OA at the point (a) comes to the point (b) after leaving a total heat exchanger 33, and then reaches the point (c) from the direct expansion coil 34 to be heated by the regenerator 35 on to the point (d) to ultimately be supplied to an animal room R. The exhaust air EA reduced to the point (e) in the animal room R becomes the point (f) upon leaving the exhaust side total heat exchanger 33. Since it then cools the condenser 45 along with the drain, it becomes the point (g) and then is discharged.

9. 发明专利

JPH06288862A AIR TEMPERATURE SETTER OF AIR TUNNEL FACILITY 失效
公开(公告)号：JPH06288862A
公开(公告)日：1994-10-18
申请号：JP7953393
申请日：1993-04-06
申请人： SANKI ENG CO LTD
发明人： WATABE HITOSHI , OOIZUMI TOMOSUKE
IPC分类号： F24F5/00 , G01M9/04
摘要： PURPOSE:To enable a marked decrease in draft resistance by using a cooling/ heating coil arranged in the passage of air supplied from a blower for both cooling and heating. CONSTITUTION:A blower 45 and a cooling/heating coil 47 are arranged in a duct 43. During normal operation, a three-way valve 71 arranged in a first branch pipe 67 is opened and closed so that supply of a heat medium heated by a heat exchanger 65 to the coil is shut off. Only a heat medium cooled by a refrigerator 49 is supplied to the coil 47, which is used as the cooling coil. On the other hand, during heat-up, three-way valves 55, 71 are opened and closed so that a medium heated by the heat exchanger 65 can be supplied to the coil 47. Only a heat medium heated by the heat exchanger 65 is supplied to the coil 47, which is used as the heating coil. The use of the coil 47 in this way for both cooling and heating as necessary dispenses with arrangement of the cooling coil and the heating coil in the duct 43 and decreases draft resistance.

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