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air conditioner

A technology for air conditioners and indoor units, applied in mechanical equipment, control/regulation systems, space heating and ventilation, etc., can solve the problems of detection performance degradation, refrigerant leakage detection performance, degradation, etc., and achieve high detection reliability Effect

Active Publication Date: 2020-12-22
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, some of the sensors for detecting refrigerant leakage have a performance of detecting refrigerant leakage that is degraded due to their lifespan.
When the detection performance of the refrigerant leakage is lowered, the refrigerant leakage cannot be detected correctly, and the detection reliability of the refrigerant leakage of the air conditioner is reduced.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] figure 1 It is a schematic diagram which shows the structure of the air conditioner 1 which concerns on Embodiment 1 of this invention. figure 2 It is a functional block diagram of main parts of the air conditioner 1 according to Embodiment 1 of the present invention. The air conditioner 1 according to Embodiment 1 includes an outdoor unit 2 disposed outdoors, an indoor unit 3 disposed indoors, and a remote controller 4 for remotely controlling the operation of the air conditioner 1 .

[0024] The outdoor unit 2 and the indoor unit 3 are connected by a refrigerant pipe 5 and an internal and external communication line 6 , and a refrigerant for heat exchange flows through the refrigerant pipe 5 . The air conditioner 1 forms a complete refrigeration cycle through the outdoor unit 2 and the indoor unit 3 . The air conditioner 1 uses the refrigerant that circulates between the outdoor unit 2 and the indoor unit 3 through the refrigerant piping 5 to transfer heat between ...

Embodiment approach 2

[0055]In Embodiment 1 described above, the case where the energization time measurement unit 32 b of the refrigerant leakage detection sensor 32 measures the sensor energization time and determines that the refrigerant leakage detection sensor 32 needs to be replaced has been described. When it is determined that the refrigerant leak detection sensor 32 detects the need for replacement of the refrigerant leak detection sensor 32 and notifies the indoor unit control unit 35 of this fact, the indoor unit control unit 35 does not grasp the refrigerant leak detection sensor 32. power-on time.

[0056] Therefore, in Embodiment 2, the indoor unit control unit 35 stores the life time of the refrigerant leakage detection sensor 32 in advance. In addition, the indoor unit control unit 35 measures the elapsed time from the initial startup of the air conditioner 1 , that is, the energization time of the indoor unit 3 , that is, the indoor unit energization time. Here, when power is supp...

Embodiment approach 3

[0062] In Embodiment 3, the indoor unit control unit 35 of the indoor unit 3 measures the elapsed time from the initial startup of the air conditioner 1, that is, the energization time of the indoor unit 3, that is, the indoor unit energization time, and determines refrigerant leakage. The case of detecting the necessity of replacement of the sensor 32 will be described. The air conditioner according to the third embodiment basically has the same functions as the air conditioner 1 according to the first embodiment except that the indoor unit energization time of the indoor unit 3 is measured, that is, the indoor unit energization time is measured to determine the necessity of replacement of the refrigerant leakage detection sensor 32 . structure and function.

[0063] In this Embodiment 3, in particular, items not described are the same as those in Embodiment 1, and the same functions and configurations are described using the same reference numerals. In addition, the descrip...

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Abstract

The invention involves air -conditioning machines.Indoor machine (3) indoor control department (35) with an indoor machine (3) action (3), remote controller (4) with: remote controller control department (45), its control remote controller (4) action; And the Display Department (41), which shows various information in the remote controller (4).The interior machine control department (35) is determined that the replacement necessity of the refrigerant leak detection sensor (32) is determined, and the following control is performed: the notice of the need for replacement of the refrigerant leak detection sensor (32) instructions will instructionThe notification information during the replacement period is sent to the remote controller (4).The message that notify the refrigerant leakage detection sensor (32) replacement of the required information based on the replacement period notification information (45) is displayed in the control of the display department (41).The detection performance of the refrigerant leakage can be maintained into a normal state, and the detection is high.

Description

technical field [0001] The present invention relates to an air conditioner for air conditioning using a refrigerant. Background technique [0002] Conventionally, Patent Document 1 discloses an air conditioner in which when an abnormality occurs in the air conditioner, the content of the abnormality is transmitted from the indoor unit to the remote controller, and the solution to the abnormality occurs as a technique for coping with an abnormality in the air conditioner. Method related data. Hereinafter, the remote controller may be referred to as a remote controller. [0003] Leakage of refrigerant is one of the abnormalities of the air conditioner. When leakage of the refrigerant occurs, the operating efficiency of the air conditioner decreases, and eventually the air conditioner becomes inoperable. As a countermeasure against refrigerant leakage, a refrigerant leakage detection sensor may be used to detect refrigerant leakage. [0004] Patent Document 1: Japanese Pate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/89
CPCF24F11/89G05B23/0267F24F11/56F24F11/36F24F11/52F24F11/49G05B19/0423G05B2219/2614
Inventor 村松秀俊井野浩行
Owner MITSUBISHI ELECTRIC CORP
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