公开(公告)号：CA1252272A

公开(公告)日：1989-04-11

申请号：CA448930

申请日：1984-03-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： TANNO SATOSHI ,  KOMA HACHIRO ,  AOKI YUKICHI ,  ITO HIRONORI ,  YONEDA HIROSHI ,  AOYAMA SHIGEO

IPC: B21D53/08 ,  B23P19/02 ,  F25B39/02 ,  F28F1/32 ,  B23P15/26

Abstract: A method of manufacturing a fin-tube heat exchanger which includes a multiplicity of plate fins arranged in a plurality of rows disposed at a predetermined pitch in the direction of air flow, and a jointless refrigerant pipe extending through the plate fins in a zigzag manner. Pipe-receiving holes are formed in each plate fin in an offset manner relative to the center of the plate fin. The plate fins are then placed in fin-receiving grooves formed in a straight fin positioning fixture at predetermined spacings such that the same longitudinal ends of the plate fins of alternating rows appear on the same side of the fin positioning fixture and such that the pipe-receiving holes are linearly aligned. The refrigerant pipe is inserted into the pipereceiving holes and is expanded to make tight and close contact with the plate fins. The refrigerant pipe is bent in a zigzag manner so that the straight portions of the pipe occupy corners of rectangles and so that a predetermined spacing is provided between the opposite ends of the plate fins of adjacent rows. Finally, a twist is imparted to the refrigerant pipe to line up the plate fins and arrange the pipe such that the straight portions of the pipe are positioned in a staggered manner, as viewed in the direction of the rows.

公开(公告)号：JP2000018765A

公开(公告)日：2000-01-18

申请号：JP18013898

申请日：1998-06-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAMEI MASAHARU ,  YONEDA HIROSHI

IPC: F25B27/02

Abstract: PROBLEM TO BE SOLVED: To utilize a radiated heat from a compressor or the like except for defrosting at the time of heating. SOLUTION: At the time of cooling, a radiated heat from a compressor 1 is supplied to a high temperature side second hydrogen storage alloy 11b via high temperature heating medium piping 13 to drive a cold heat generating system 21. Thus, a cold heat generated at a low temperature side first hydrogen storage alloy 11a is supplied to an outdoor heat exchanger 3 via low temperature heating medium piping 15 to supplement a radiation of the exchanger 3. At the time of heating, the radiated heat from the compressor 1 is supplied directly to the exchanger 3 via bypass pipings 19a, 19b for short-circuiting the system 21, thereby supplementing heat absorption of the exchanger 3, thereby suppressing occurrence of a frost.

公开(公告)号：JPH0612231B2

公开(公告)日：1994-02-16

申请号：JP15904885

申请日：1985-07-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： YONEDA HIROSHI ,  KIDO OSAO

IPC: F28F1/32 ,  F28F17/00

公开(公告)号：JPH0480568A

公开(公告)日：1992-03-13

申请号：JP19664390

申请日：1990-07-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： AOYAMA SHIGEO ,  YONEDA HIROSHI

IPC: F25B29/00

Abstract: PURPOSE:To realize simultaneous room cooling and room heating operations through a simple constitution by a method wherein an outdoor side expansion valve is connected to an indoor side heat exchanger through a first two-way vale, a four-way valve is connected to the indoor side heat exchanger through a second two-way valve while the outdoor side expansion valve is connected to the first two-way valve and the indoor side expansion valve through a two-way bypass valve. CONSTITUTION:An outdoor side expansion valve 6 is connected to indoor side heat exchangers 7a-7c through first two-way valves 13a-13c, a four-way valve 3 is connected to indoor side heat exchangers 7a-7c through second two-way valves 14a-14c and the outdoor side expansion valve 6 is connected to the first two-way valve and the indoor side expansion valves 16a-16c through a bypassing two-way valve 15. The four-way valve 3 is switched or the opening and/or closing or the opening degrees of the outdoor side expansion valve 6, the indoor side expansion valves 6a-6c, the first two-way valves 13a-13c, the second two-way valves 14a-14c and the bypassing two-way valve 15 are controlled in accordance with the operating mode of an outdoor machine 1 whereby room cooling or room heating can be set individually and freely in respective indoor machines 9a-9c and, therefore, the simultaneous operations of room cooling and room heating can be realized.

公开(公告)号：JPH0379965A

公开(公告)日：1991-04-04

申请号：JP21333289

申请日：1989-08-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： AOYAMA SHIGEO ,  YONEDA HIROSHI

IPC: F25B13/00 ,  F24F5/00

Abstract: PURPOSE:To reduce operation cost by a heating and cooling method wherein a cold and heat storage is performed with respect to heat storing material in a heat storage tank making use of an electric power during the night, the stored cold and heat is heat exchanged with a refrigerant is sent to an an indoor heat exchanger for heat exchange with the air in a room. CONSTITUTION:In the case of a cooling mode of a heat and cold storing operation during the night, refrigerant from a compressor 2 is condensed by an outdoor heat exchange 4, reduced in pressure by a second expansion valve 12, evaporated in the pipe of a heat regenera tor 13 in a heat storage tank to absorb heat from heat storing material 11 and returned to the compressor 2. In the case of simultaneous cooling and heating, the cooling operation of indoor machines 6a and 6b comprises the steps of sending the refrigerant to the heat regenerator 13 in the heat storage tank by a pump PM1, conducting its heat exchange with the cold reserved heat storing material 11 to cool the refrigerant to a low temperature and sending the same to heat exchangers 8a and 8b to cool the air in a room. Concerning the heating operation of an indoor machine 6c, the refrigerant from the compressor 2 is condensed in the pipe of a primary heat exchanger 14a of a refrigerant heat exchanger, reduced in pressure by a first expansion valve 5, evaporated in the outdoor heat exchange 4 and returned to the compressor 2. The refrigerant heated to a high temperature by a secondary heat exchanger 14b of the refrigerant heat exchanger is sent to an heat exchanger 8c by a pump PM2 to heat the air in a room.

公开(公告)号：JPH02242057A

公开(公告)日：1990-09-26

申请号：JP6179589

申请日：1989-03-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： YONEDA HIROSHI ,  KINO AKIHIRO ,  AOYAMA SHIGEO

IPC: F25B29/00

Abstract: PURPOSE:To enable partial heating during cooling operation and partial cooling during heating operation by connecting a compressor, a four way valve, an outdoor heat exchanger, an outdoor side expansion valve, an indoor side auxiliary heat exchanger, an indoor side expansion valve, and an indoor side main heat exchanger in ring shape, installing a flow rate control valve to a bypass circuit of said indoor side auxiliary heat exchanger, separating said indoor side auxiliary heat exchanger's air duct from said indoor side main heat exchangers air duct, and installing an air duct change over device. CONSTITUTION:Outdoor equipment 1 of an air conditioner comprises a compressor 2, a four way valve 3, an outdoor side expansion valve 4, an outdoor side heat exchanger 5, and an outdoor side fan 6 while indoor equipment 20 comprises a two way valve 21, an indoor side auxiliary heat exchanger 22, an indoor side expansion valve 23, an indoor side main heat exchanger 24, a bypass circuit 26 equipped with a flow rate control valve 25 which bypasses the indoor side auxiliary heat exchanger 22, and an indoor side fan 27. A partition plate 28 which is designed to divide an air duct of the indoor equipment 20 into an auxiliary heat exchanger side air duct 32 and a main heat exchanger side air duct 33, is an air duct change over device which switches over the air duct into an upper duct 30 and a lower duct 31.

公开(公告)号：JPH02171553A

公开(公告)日：1990-07-03

申请号：JP32666088

申请日：1988-12-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： KINO AKIHIRO ,  YONEDA HIROSHI ,  YAMADA HIROYOSHI

IPC: F25B1/00

Abstract: PURPOSE:To control a freezing cycle always under the most suitable condition by a method wherein an interior electric expansion valve is controlled with a difference of temperatures detected by an air temperature sensor at an inlet side of an outdoor heat exchanger arranged in an outdoor device during cooling operation and a pipe temperature sensor at a suction pipe of a compressor of variable capability. CONSTITUTION:A suction pipe temperature sensor 17 closely contacted to a suction pipe 2A of a compressor 2 of variable capability and fixed in a heat-exchanging manner is electrically connected to an outdoor device controlling means, detects a temperature of the pipe 2A and sends a signal. A surrounding air temperature sensor 18 may detect a surrounding air temperature and send a signal to the outdoor device controlling means 12. The indoor device controlling means 12 may send a signal to the indoor device controlling means 13 when a difference between a surrounding air temperature and a suction air temperature is less than a predetermined temperature (for example, 10 deg.), and the indoor device controlling means 13 may open the indoor electric expansion valve 8 for a desired degree of opening. The indoor electric expansion valve is controlled in such a way as a temperature of the sucked refrigerant of the compressor of variable capability is detected and a difference between it and the outdoor surrounding air temperature is more than a specified temperature, resulting in that an over-increasing of temperature and a burn loss of the compressor caused by the increased temperature of the sucked refrigerant are prevented.

公开(公告)号：JPH0210060A

公开(公告)日：1990-01-12

申请号：JP16012888

申请日：1988-06-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： KINO AKIHIRO ,  YONEDA HIROSHI ,  YAMADA HIROYOSHI

IPC: F25B1/00 ,  F25B31/00

Abstract: PURPOSE:To prevent the refrigerator oil in an oil separator from flowing into the suction pipe of a compressor while it is stopped by providing the flow channel in an oil return pipe with a two-way valve and conduction the opening and closing of the two-way valve synchronized with the operation of a compressor. CONSTITUTION:As soon as a compressor 2 is started, a two-way valve 14 installed in the flow channel of an oil return pipe 9 is opened. During the compressor 2 is operated the refrigerator oil that is discharged with coolant is separated from the coolant by an oil separator 3 and it stays once in the oil separator 3. This refrigerator oil flows through the oil return pipe 9 and its flow rate is kept at a suitable rate by a flow rate limiting device 10 and flows to a suction pipe 2B of the compressor 2 and returns into the compressor 2. At this time surplus refrigerator oil accumulates in the oil separator 3. When the compressor stops, the two-way valve 14 is closed, and the flow channel of the oil return pipe is thereby closed, and the refrigerator oil in the oil separator 3 stays as it is even if the pressure difference between the low pressure pipes is large.

公开(公告)号：JPH01302075A

公开(公告)日：1989-12-06

申请号：JP13188288

申请日：1988-05-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： YONEDA HIROSHI ,  KINO AKIHIRO ,  YAMADA HIROYOSHI

IPC: F25B13/00

Abstract: PURPOSE:To perform a dehumidifying operation which can take much latent heat by reducing the control width of the opening of a door motor-driven expansion valve in each room apparatus at the time of dehumidifying operation mode smaller than that at the time of room cooling operation mode. CONSTITUTION:In room controllers 60A to 60C of room apparatuses 45A to 45C, sucked air temperatures are detected by sucked air temperature detectors 51A to 51C, set room temperature values set by remote controllers 54A to 54C are detected by set room temperature detectors 50A to 50C, and air conditioning loads are calculated from the set room temperature values and the sucked air temperatures by air conditioning load calculators 52A to 52C. Then, controlling widths are determined by valve opening control width determining means 62A to 62C in response to preset cooling and dehumidifying operation modes, the altering widths of the openings of motor-driven expansion valves are determined by valve opening altering width determining means 57A to 57C, thereby controlling room motor-driven expansion vale controllers 49A to 49C. In this case, since the room motor-driven expansion valve controlling widths of the dehumidifying operation mode is smaller than those of the cooling operation mode to be controlled in a reducing trend, its evaporation temperature is low, the ratio of latent heat exchanging amount is increased, and a large dehumidifying effect is obtained.

公开(公告)号：JPH01212876A

公开(公告)日：1989-08-25

申请号：JP3819088

申请日：1988-02-19

Applicant: MATSUSHITA REFRIGERATION

Inventor： KINO AKIHIRO ,  YONEDA HIROSHI ,  YAMADA HIROYOSHI

IPC: F25B13/00

Abstract: PURPOSE:To enable execution of normally stable cooling (heating) operation, by a method wherein control is effected such that 2-way valves are all temporarily opened, and when opened, the 2-way valve at the inlet of a refrigerant flow passage is closed in prior to closing of the 2-way valve at the outlet of thereof, and thereafter the 2-way valve at the outlet is closed. CONSTITUTION:When an outdoor heat exchanger is switched from 5A-5B, a control means 13 on the outdoor side opens 2-way valves 6B and 7B. As a result, a refrigerant flows to both refrigerant flow passages 5A and 5B of a heat exchanger 5 on the outdoor side. Thereafter, after lapse of a specified time, a 2-way valve 6A at the inlet of the refrigerant flow passage 5A is first closed. And subsequently, a 2-way valve 7A is closed after lapse of further specified time. This motion causes switching of the heat exchanger 5 on the outdoor side to the refrigerant flow passage 5B to continue operation. As noted above, when a refrigerant flow passage is switched, all of the 2-way valves 6A, 6B, 7A and 7B are temporarily opened, and thereafter the 2-way valves 6A, 6B, 7A and 7B are closed, in order, from the inlet side where necessary. This constitution prevents an excessive increase of a pressure and temperature due to the temporarily shut-off state of a freezing cycle and the occurrence of a state to seal a refrigerant flow passage with a liquid refrigerant.