公开(公告)号：JPH03236536A

公开(公告)日：1991-10-22

申请号：JP3207690

申请日：1990-02-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： KURACHI MASAO ,  TAKAHASHI TAKAHIRO

IPC: F24F5/00 ,  F25B1/00

Abstract: PURPOSE:To make it possible to optimize distribution of a refrigerant to each outdoor unit and indoor unit by providing a plurality of second auxiliary heat exchangers and outdoor flow regulating valves, a plurality of use-side heat exchangers and indoor flow regulating valves provided in series to these use-side heat exchangers and a use-side refrigerant cycle formed of a plurality of refrigerant carrying devices connected circularly. CONSTITUTION:Outdoor units (f) and f' are provided with outdoor flow regulating valves 24 regulating the flow rate of a refrigerant to second auxiliary heat exchangers 19 respectively, while indoor units (g) and (h) are provided with indoor flow regulating valves 25a and 25b regulating the flow rate of the refrigerant to indoor-side heat exchangers 22a and 22b respectively. The number of operating refrigerant carrying devices 21 is set in accordance with the number of operating indoor and outdoor units and a necessary flow rate of the refrigerant. The opening of the outdoor flow regulating valves 24 and the indoor flow regulating valves 25a and 25b is adjusted in a range from full opening to full closure so that the necessary quantity of the refrigerant for the respective units be circulated, and thereby optimum distribution of the refrigerant is executed.

公开(公告)号：JPH02213625A

公开(公告)日：1990-08-24

申请号：JP3305489

申请日：1989-02-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： KURACHI MASAO ,  TAKAHASHI TAKAHIRO

IPC: F24F5/00 ,  F25B13/00

Abstract: PURPOSE:To form a radiation unit where formation of dew is difficult to make and to reduce an amount of a refrigerant with which a refrigerant cycle on the utilization side is filled by providing a fourth auxiliary heat exchanger separating the heat source side from a refrigerant cycle on the utilization side and integrally formed with a third auxiliary heat exchanger to perform heat exchange and a radiation refrigerant cycle through which an auxiliary refrigerant carrying device and a radiation heat exchanger are interconnected in an annular manner. CONSTITUTION:During cooling operation, high temperature high pressure gas from a compressor 11 is condensed and liquefied by means of a heat exchanger 13 on the heat source side, and is reduced in a pressure by means of an expansion valve 14 for cooling and vaporized by a first auxiliary heat exchanger 18, and is circulated to a compressor 12. Second and first auxiliary heat exchangers 19 and 18 heat-exchange with each other, a gas refrigerant is liquefied, the heat of the gas refrigerant is absorbed by a heat exchanger 23 on the utilization side to vaporize it, and the gas refrigerant is circulated to the second auxiliary heat exchanger 19. In this case, third and fourth auxiliary heat exchangers 26 and 27 heat-exchange with each other, a liquid refrigerant is fed to a radiation heat exchanger 29 to perform radiation cooling for gasification, and the gasified refrigerant is circulated to the fourth auxiliary heat exchanger 27. Meanwhile, during heating operation, a high temperature high pressure refrigerant from the compressor 11 is fed to the first auxiliary heat exchanger 18 to become gas, the pressure of the gasified refrigerant is reduced by a pressure reducing device 15 for heating, and heat is absorbed by a heat exchanger 13 on the heat source side for vaporization, and the gas refrigerant is circulated to the compressor 11.

公开(公告)号：JPH02171531A

公开(公告)日：1990-07-03

申请号：JP32665188

申请日：1988-12-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAHASHI TAKAHIRO ,  KURACHI MASAO

IPC: F24F5/00 ,  F25B13/00

Abstract: PURPOSE:To enable a control over a capability of a user's device to be carried out in multi-stages by a method wherein a plurality of refrigerant transferring devices having different capabilities are arranged in parallel during a user's refrigerant cycle. CONSTITUTION:The number of refrigerant transferring devices 11a and 11b having different capabilities is controlled according to a load of a user's device (b) to control a transferring capability and a refrigerant circulating amount in case of a user's refrigerant cycle is controlled so as to control a refrigerant circulating amount in the user's refrigerant cycle, thereby heat exchanging capabilities of the second auxiliary heat exchanger 9 and the user's side heat exchanger 12 are controlled and then a capability of the user's refrigerant cycle is controlled. For example, if the capability (a cylinder volume) of the refrigerant transferring device is 5cc and 8cc, a combination of capabilities becomes three patterns of 5cc, 8cc and 13cc and capabilities of three stages can be controlled. In addition, since a capability of a heating source refrigerant cycle is controlled by a heat exchanging capability of the second auxiliary heat exchanger 9, the heating source side refrigerant cycle is balanced with a capability of the user's side refrigerant cycle.

公开(公告)号：JPS6193366A

公开(公告)日：1986-05-12

申请号：JP21552384

申请日：1984-10-15

Applicant: Matsushita Refrigeration

Inventor： TAKAHASHI TAKAHIRO ,  IWAMOTO TETSUMASA

IPC: F25B41/00

CPC classification number: F25B39/028

公开(公告)号：JPS6193356A

公开(公告)日：1986-05-12

申请号：JP21552484

申请日：1984-10-15

Applicant: Matsushita Refrigeration

Inventor： IWAMOTO TETSUMASA ,  TAKAHASHI TAKAHIRO

IPC: F25B13/00

公开(公告)号：JPS58115265A

公开(公告)日：1983-07-08

申请号：JP21287981

申请日：1981-12-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAHASHI TAKAHIRO

IPC: F04B17/04 ,  F25B1/00 ,  F25B1/02

公开(公告)号：JPH0571814A

公开(公告)日：1993-03-23

申请号：JP23282291

申请日：1991-09-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： TAKAHASHI TAKAHIRO ,  NAKAGAWA NOBUHIRO ,  KURACHI MASAO

IPC: F24F5/00 ,  F25B1/00

Abstract: PURPOSE:To obtain a heating and cooling apparatus preventing a short circuit in a use-side four-way valve when the next heating operation is started and the stoppage of a system by high pressure cutting by positively turning the pilot type use-side four-way valve OFF when heating operation is stopped. CONSTITUTION:Stoppage from heating operation is detected by a heating-cooling stoppage detecting means, and pressure difference on the delivery side and suction side of a refrigerant pump 8 is detected by a differential-pressure detecting means 26. When whether or not pressure difference reaches the proof differential pressure or more of a use-side four-way valve 9 is decided by a differential-pressure decision means 27 and the pressure difference is lower than the proof differential pressure, an indoor flow valve 22 is driven by an indoor flow-valve driving means 28 as the operation of the refrigerant pump 8 is left as it is continued until the pressure difference is made lower. A compressor 1 and a heat-source side four-way valve 2 are driven by a heat-source side equipment driving means 18 and the use-side four-way valve 9 and the refrigerant pump 8 by a use-side equipment driving means, thus stopping a system.

公开(公告)号：JPH03113243A

公开(公告)日：1991-05-14

申请号：JP25272389

申请日：1989-09-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： KURACHI MASAO ,  TAKAHASHI TAKAHIRO

IPC: F25B13/00

Abstract: PURPOSE:To prevent a compressor from being interrupted in its operation by providing a heat source side refrigerant cycle and a utilization side refrigerant cycle, and further providing a control device for opening a solenoid valve disposed in parallel to a heating pressure reducer device by use of difference pressure detected by a pressure difference detector device between the heat source side refrigerant cycle and the utilization side refrigerant cycle. CONSTITUTION:When difference pressure between a heat source side refrigerant cycle and a utilization side refrigerant cycle does not exceed a predetermined valve upon heating operation, a difference pressure detector device 14 is actuated to cause a control device 15 to open a solenoid valve 13. Accordingly, the amount of pressure reduction is lowered to reduce the amount of exchanged heat (amount of absorbed heat) in a heat source side heat exchanger 3 and hence reduce the amount of exchanged heat (amount of discharged heat) in a first auxiliary heat exchanger 8. Thus, high pressure can also be lowered. Therefore, a compressor can be prevented from being interrupted owing to the rise of the high pressure upon starting the heating operation.

公开(公告)号：JPH03113242A

公开(公告)日：1991-05-14

申请号：JP25272189

申请日：1989-09-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： KURACHI MASAO ,  TAKAHASHI TAKAHIRO

IPC: F25B13/00

Abstract: PURPOSE:To prevent a compressor from being interrupted in its operation upon starting heating operation by providing a heat source side refrigerant cycle and a utilization side refrigerant cycle, and further providing a control device for opening a solenoid valve disposed in parallel to a heating pressure reducing device by pressure detected by a pressure detector device in the heat source side refrigerant cycle. CONSTITUTION:Much gas refrigerant mixes into the inlet side of a refrigerant carrier device 11 upon heating operation to reduce the amount of heat exchange in a second auxiliary heat exchanger 9 is lowered and hence high pressure in a heat source side refrigeration cycle rises. Once the high pressure reaches predetermined pressure, a pressure detector device 14 is actuated to cause a control device 15 to open a solenoid valve 13. Accordingly, the amount of pressure reduction is lowered to acuse the amount of exchanged heat (amount of heat absorption) of a heat source side heat exchanger 3 to be lowered and hence the amount of exchanged heat (amount of heat dissipation) in a first auxiliary heat exchanger 8 to be reduced. Hereby, a compressor is prevented from being interrupted even though capability of the refrigerant carrier device is lowered upon the starting of heating operation.

公开(公告)号：JPH0313749A

公开(公告)日：1991-01-22

申请号：JP14902589

申请日：1989-06-12

Applicant: MATSUSHITA REFRIGERATION

Inventor： KURACHI MASAO ,  TAKAHASHI TAKAHIRO

IPC: F24F5/00 ,  F25B1/00 ,  F25B13/00

Abstract: PURPOSE:To enable the warming or cooling operation of an auxiliary refrigerant cycle to be performed by providing an auxiliary refrigerant cycle wherein a fourth auxiliary heat exchanger is formed integrally with the third auxiliary heat exchanger, an auxiliary compressor, an auxiliary heat source side decompression device, an auxilia ry four-way valve and an auxiliary indoor side heat exchanger provided in an indoor unit are annularly connected to one another. CONSTITUTION:A heat source side refrigerant cycle and a utilizing side refrigerant cycle are separated from each other. The utilizing side refrigerant cycle is provided with a main indoor unit 24 having a utilizing side heat exchanger 23 and an auxiliary refrigerant cycle wherein an auxiliary refrigerant carrier 34 and a third auxiliary heat exchanger 26 are annularly connected from a refrigerant storing tank 25C. Further, an auxiliary refrigerant cycle is provided wherein a fourth auxiliary heat exchanger 27 formed integrally with a third auxiliary heat exchanger 26, an auxiliary compressor 28, an auxiliary four-way valve 29, an auxiliary heat source side decompression device 30 and an auxiliary indoor side heat exchanger 35 provided in an auxiliary indoor unit 38 are annularly connected to one another. Thus, the auxiliary refrigerant cycle can perform a heating or cooling operation regardless of the operations of the heat source side and utilizing side refrigerant cycles.