公开(公告)号：JPS62200162A

公开(公告)日：1987-09-03

申请号：JP4125786

申请日：1986-02-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： KITA TAKAHIRO ,  ENDO KATSUMI ,  HAMAOKA KOJI

IPC: F25D11/00

公开(公告)号：JPS62200159A

公开(公告)日：1987-09-03

申请号：JP3992986

申请日：1986-02-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： KITA TAKAHIRO ,  ENDO KATSUMI ,  HAMAOKA KOJI

IPC: F25D11/00 ,  F25D29/00

公开(公告)号：JPS6210572A

公开(公告)日：1987-01-19

申请号：JP14960485

申请日：1985-07-08

Applicant: MATSUSHITA REFRIGERATION ,  MATSUSHITA ELECTRIC IND CO LTD

Inventor： KITA TAKAHIRO ,  ENDO KATSUMI ,  MIURA TAKASHI

IPC: F25D11/00 ,  F25D11/02

公开(公告)号：JPS6191473A

公开(公告)日：1986-05-09

申请号：JP21355084

申请日：1984-10-11

Applicant: Matsushita Refrigeration

Inventor： ENDO KATSUMI

IPC: F25D11/00

公开(公告)号：JP2000183923A

公开(公告)日：2000-06-30

申请号：JP35565098

申请日：1998-12-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： OKAMOTO SHINJI ,  ENDO KATSUMI ,  KURIMOTO KAZUNORI ,  OUCHIYAMA TOMONORI

IPC: H04L12/40

Abstract: PROBLEM TO BE SOLVED: To provide a polling method whose transmitting efficiency and delay characteristics are satisfactory in a communication system in which plural equipment connected with the same transmitting medium communicate with each other, and a main station controls plural slave stations belonging to any of n groups. SOLUTION: A main station 2 is provided with a polling schedule storage means 3 for storing polling schedule and a polling schedule executing means 4 for deciding an object group for polling. A slave station 9 is provided with a frame transmission timing counting means 12 for measuring a lapse time after frame reception and a frame transmission timing storage means 13 for storing a frame transmission timing time. Thus, even when the bias of traffic is generated between each slave station, or the fluctuation of traffic is temporally increased, transmitting efficiency and delay characteristics can be improved in this polling method.

公开(公告)号：JPH1038429A

公开(公告)日：1998-02-13

申请号：JP19424796

申请日：1996-07-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： ODA MASATAKA ,  KAMITSUJI TOSHIO ,  ENDO KATSUMI ,  KURIMOTO KAZUNORI

IPC: F25D11/00 ,  F25B1/00 ,  F25B49/02

Abstract: PROBLEM TO BE SOLVED: To prevent wear of a rotative speed variable compressor of a refrigerator caused by a shortage of lubricating oil due to an increase in viscosity of the lubricating oil and enhance the reliability, by stopping a machine room fan when the compressor operates at low speeds and the outside temperature is low. SOLUTION: A temperature controller 4 decides and outputs rotative speed signals of a compressor 6 and an outside temperature detector 13 outputs outside temperature signals. When a machine room fan rotative speed controller 7 judges the rotative speed of the compressor 6 to be lower than the normal rotative speed and the outdoor temperature to be lower than the specified temperature from the rotative speed signals and the outside temperature signals, a machine room fan 9 is stopped to prevent wear of sliding part of the compressor 6 by averting an excessive drop in temperature of the compressor 6 that causes a shortage of lubricating oil because of an increase in viscosity of the lubricating oil.

公开(公告)号：JPH09178322A

公开(公告)日：1997-07-11

申请号：JP33457295

申请日：1995-12-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAMITSUJI TOSHIO ,  NODA TOSHINORI ,  ENDO KATSUMI ,  ODA MASATAKA ,  MORISHITA KENICHI ,  HAMANO YASUKI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/02 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To save the energy of a refrigerator by realizing appropriate number of revolution of a compressor and appropriate flow rate of an electric-driven expansion valve to cope with the change in the temperature of a cooler associated with opening/closing of an air passage control damper of the refrigerator on which an inverter is mounted to improve the operational efficiency and the cooling system efficiency of the refrigerator. SOLUTION: The number of revolutions of a compressor and the flow rate of an electric-driven expansion valve are determined by the number of revolutions and a flow rate operating means 25 using the output of an in-freezer differential temperature operating means 24, the number of revolutions and the flow passage resistance value are corrected by a number of revolutions and a flow rate correcting means 41 using the output from a cooler temperature detecting means 42, the number of revolutions of the compressor is controlled by an inverter circuit 26 by the command from the number of revolutions and the flow rate correcting means 41, and the flow rate is controlled by an electrically driven expansion valve control circuit 45.

公开(公告)号：JPH09138053A

公开(公告)日：1997-05-27

申请号：JP29674495

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  KUBOTA YOSHITAKA ,  ODA MASATAKA ,  NODA TOSHINORI ,  ENDO KATSUMI ,  KAMITSUJI TOSHIO ,  MORISHITA KENICHI ,  KANEOKA SHINICHI ,  KURIMOTO KAZUNORI

IPC: F25D21/06 ,  F25B47/02

Abstract: PROBLEM TO BE SOLVED: To increase the efficiency of defrosting, save energy, and to contrive freshness of a food at a high value by a method wherein defrosting is executed by operating a compressor through superlow rotation. SOLUTION: When the operation time of a number of revolution variable type (capacity variable type) compressor 17 attains a specified time by a defrosting timer 11, the number of revolutions variable type (capacity variable type) compressor 17 is operated at low rotation and cold air feed means 10 is stopped. When the number of revolutions variable type (capacity variable type) compressor 17 is operated at low rotation, the vaporization temperature of a refrigerant is increased to at least 0 deg.C being temperature at which frost is molten, and the temperature of a vaporizer 3 becomes also at last 0 deg.C. Frost adhered to the vaporizer 3 is defrosted through direct heat-exchange with the vaporizer 3 the temperature of which is at least 0 deg.C. This constitution improves the efficiency of defrosting, saves energy, and maintains freshness of a food at a high value.

公开(公告)号：JPH09138048A

公开(公告)日：1997-05-27

申请号：JP29674095

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： ENDO KATSUMI ,  KUBOTA YOSHITAKA ,  HAMANO YASUKI ,  NODA TOSHINORI ,  MORISHITA KENICHI ,  KAMITSUJI TOSHIO ,  KANEOKA SHINICHI ,  ODA MASATAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/02

Abstract: PROBLEM TO BE SOLVED: To perform hihgly efficient operation control by a method wherein the number of revolutions of a compressor is controlled by a temperature differ ence between the temperature of a cooler and a set temperature. SOLUTION: A refrigerating chamber temperature is detected by a refrigerating chamber temperature detecting means 21, a set temperature is detected by a refrigerating chamber temperature setting means, and on/off of a compressor 17 are determined by a temperature difference therebetween. The temperature of a cooler 13 is detected by a cooler temperature detecting means 42 and the number of revolutions of a compressor 17 is decided by a number of revolutions computing means 25 by means of a temperature difference between a cooler temperature and a cooler set temperature. By controlling the number of revolutions of the compressor by an inverter circuit 26, a cooler temperature is not reduced more than necessary to cool a chamber, and high-efficient operation is performed.

公开(公告)号：JPH09138045A

公开(公告)日：1997-05-27

申请号：JP29673595

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： ODA MASATAKA ,  KANEOKA SHINICHI ,  MORISHITA KENICHI ,  HAMANO YASUKI ,  NODA TOSHINORI ,  KUBOTA YOSHITAKA ,  ENDO KATSUMI ,  KURIMOTO KAZUNORI ,  KAMITSUJI TOSHIO

IPC: F25D17/06 ,  F25D11/00 ,  F25D21/06

Abstract: PROBLEM TO BE SOLVED: To maintain freshness of a food by a method wherein the number of revolutions of a refrigerator fan is reduced to a minimum and the increase of a refrigerator temperature is suppressed to a minimum, in operation right after defrosting of a refrigerator on which an inverter is mounted. SOLUTION: By detecting a defrosting completion signal from a defrosting completion detecting means 10, an output is fed to a number of revolutions of fan correcting means 12. The minimum number of revolutions is selected in getting priority over the number of revolutions decided by a temperature difference between a refrigerator temperature and a set temperature. Cooling air has the efficiency of heat-exchange being improved in such a away that the number of revolutions of a refrigerator fan 8 is suppressed by being delayed by a time in which operation of a timer 13 is completed or temperature by a vaporiser temperature detecting means attains a given value and an airflow is reduced, and the cooling air is fed. Thereafter, the number of revolutions is increased to a value decided by a temperature difference between the refrigerator temperature and the set temperature and a cooling airflow is increased.