CN107228501B

CN107228501B - Air conditioner

Info

Publication number: CN107228501B
Application number: CN201710373687.7A
Authority: CN
Inventors: 郑润兴; 杨焕弟
Original assignee: Guangdong Kaili Hvac Co ltd
Current assignee: Guangdong Kaili Hvac Co ltd
Priority date: 2017-05-24
Filing date: 2017-05-24
Publication date: 2023-12-01
Anticipated expiration: 2037-05-24
Also published as: CN107228501A

Abstract

The invention discloses an air conditioner, which comprises a compressor, a condenser and an evaporator, wherein an exhaust pipeline of the compressor is communicated with the condenser, an air return pipeline of the compressor is communicated with the evaporator, a first stop valve is arranged on the exhaust pipeline, and a second stop valve is arranged on the air return pipeline; when the compressor is started, the first stop valve and the second stop valve are both in a conducting state; when the compressor just stops rotating, the first stop valve can be closed immediately, and the second stop valve can be kept in a conducting state to a preset time and then closed. When the air conditioner is stopped, the refrigerant in the heat exchanger system can be recycled into the compressor, so that the pressure in the heat exchanger and the system pipeline is lower than the standard atmospheric pressure of the external environment, and when a tiny leakage point exists in the system, the slow leakage of the refrigerant is avoided.

Description

Air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an air conditioner.

Background

As the global air temperature rises, air conditioners have come into the thousands of households, increasingly being used. Through market research, the situation that the machine cannot normally run due to leakage of the air conditioner refrigerant often happens, so that on one hand, the satisfaction degree of consumers on the use of products is affected, and on the other hand, the leakage of the refrigerant into the atmosphere is reduced due to the fact that the refrigerant R22 has a destructive effect on ozone in the atmosphere.

The reasons for causing the refrigerant leakage are many, for the split air conditioner, the welding position of the heat exchanger pipeline and the connecting pipeline of the indoor and outdoor units are easy to have microminiature leakage, the air conditioner is shut down after operation at present, the compressor stops running, the refrigerant is dispersed in the indoor and outdoor heat exchangers and the corresponding pipelines, and the refrigerant is easy to slowly run off through the microminiature leakage position because the internal pressure is higher than the external environment atmospheric pressure.

In summary, how to solve the problem of refrigerant leakage in the heat exchanger and the corresponding pipeline of the air conditioner has become a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide an air conditioner, so as to avoid leakage of refrigerant in a heat exchanger and corresponding pipelines of the air conditioner.

In order to achieve the above object, the present invention provides an air conditioner, comprising a compressor, a condenser and an evaporator, wherein an exhaust pipeline of the compressor is communicated with the condenser, an air return pipeline of the compressor is communicated with the evaporator, a first stop valve is arranged on the exhaust pipeline, and a second stop valve is arranged on the air return pipeline;

when the compressor is started, the first stop valve and the second stop valve are both in a conducting state;

when the compressor just stops rotating, the first stop valve can be closed immediately, and the second stop valve can be kept in a conducting state to a preset time and then closed.

Preferably, the preset time is 20 seconds.

Preferably, the first stop valve is a solenoid valve.

Preferably, the second stop valve is a solenoid valve.

Preferably, the second stop valve is kept in a conducting state to a preset time by connecting with a delay relay and then is closed.

Compared with the description of the background art, the air conditioner has the advantages that when the air conditioner is stopped by arranging the first stop valve and the second stop valve, namely when the compressor is just stopped, the exhaust pipeline is still in high pressure instantaneously, the return pipeline is still in low pressure, and although the first stop valve is in a closed state at this time, the flow of fluid in the pipeline continues to flow due to inertia, so that the refrigerant in the heat exchanger system is recovered into the compressor; when flowing to the preset time, the second stop valve is closed, so that negative pressure is formed in the pipeline between the first stop valve and the second stop valve, and even if the pressure in the heat exchanger and the pipeline of the system is lower than the standard atmospheric pressure of the external environment, the slow leakage of the refrigerant is avoided when the system has a tiny leakage point.

Drawings

Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

In the above fig. 1, arrows each represent the flow direction of the fluid:

a compressor 1, a condenser 2, an evaporator 3, a discharge pipe 4, a return pipe 5, a first stop valve 6, a second stop valve 7, and a throttle device 8.

Detailed Description

The core of the invention is to provide an air conditioner so as to avoid the leakage of the heat exchanger of the air conditioner and the refrigerant in the corresponding pipeline.

In order to make the technical solution provided by the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the air conditioner provided by the embodiment of the invention comprises a compressor 1, a condenser 2 and an evaporator 3, wherein an exhaust pipeline 4 of the compressor 1 is communicated with the condenser 2, an air return pipeline 5 of the compressor 1 is communicated with the evaporator 3, a first stop valve 6 is arranged on the exhaust pipeline 4, and a second stop valve 7 is arranged on the air return pipeline 5; when the compressor 1 is turned on, the first stop valve 6 and the second stop valve 7 are both in an on state; when the compressor 1 just stops rotating, the first shut-off valve 6 can be closed immediately, and the second shut-off valve 7 can be kept in an on state for a preset time and then closed. It should be noted here that it should be understood by those skilled in the art that the heat exchanger system of an air conditioner should also generally have a throttle device 8, and that the throttle device 8 is disposed between the condenser 2 and the evaporator 3.

In some embodiments, the delayed closing of the second shut-off valve corresponds to a predetermined time of 20 seconds. It will be understood, of course, that the above 20 seconds is only a preferred example of the embodiment of the present invention, and other time values may be selected according to the internal system setting of the heat exchanger corresponding to the air conditioner.

Further, one or both of the above-described first shut-off valve 6 and second shut-off valve 7 may be an electromagnetic valve. The electromagnetic valve is arranged, so that the on-off of the power supply of the valve body can be controlled to control the opening and closing of the valve body, and the valve is simpler and more convenient. Of course, the electromagnetic valve is just a preferable example of the embodiment of the invention, and can also be a mechanical valve body.

In addition, when the second shut-off valve 7 is a solenoid valve, it is possible to maintain the on state to a preset time by connecting a delay relay and then close. It will be understood, of course, that the above-mentioned delayed relay achieves delayed closing of the second stop valve merely as a preferred example of the embodiment of the present invention, and may be achieved by other delayed closing devices commonly used by those skilled in the art, such as a controller controlling delayed closing of the second stop valve directly.

The air conditioner provided by the invention is described in detail above. It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in an article or apparatus that comprises such element.

The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims

1. An air conditioner comprises a compressor (1), a condenser (2) and an evaporator (3), wherein an exhaust pipeline (4) of the compressor (1) is communicated with the condenser (2), and an air return pipeline (5) of the compressor (1) is communicated with the evaporator (3), and the air conditioner is characterized in that a first stop valve (6) is arranged on the exhaust pipeline (4), and a second stop valve (7) is arranged on the air return pipeline (5);

when the compressor (1) is started, the first stop valve (6) and the second stop valve (7) are both in a conducting state;

when the compressor (1) just stops rotating, the first stop valve (6) can be immediately closed, and the second stop valve (7) can be kept in a conducting state to be closed again for a preset time, so that the pressure in the heat exchanger and a system pipeline is lower than the standard atmospheric pressure of the external environment, and when a tiny leakage point exists in the system, the slow leakage of the refrigerant is avoided;

the preset time is 20 seconds, and the second stop valve (7) is kept in a conducting state to the preset time through connection of the delay relay and then is closed.

2. An air conditioner according to claim 1, wherein the first shut-off valve (6) is a solenoid valve.

3. An air conditioner according to claim 1, wherein the second shut-off valve (7) is a solenoid valve.