CN210951995U

CN210951995U - Noise-reducing air conditioner

Info

Publication number: CN210951995U
Application number: CN201921470911.5U
Authority: CN
Inventors: 崔国栋; 刁洪福; 陈聪; 高明; 王海胜
Original assignee: Qingdao Haier Central Air Conditioner Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Central Air Conditioner Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-07-07
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a noise reduction air conditioner, which comprises an evaporator, a condenser and an electronic expansion valve, and also comprises a capillary tube and a control valve, wherein the first end of the capillary tube is connected with the evaporator, and the second end is connected with the inlet end of the electronic expansion valve; the outlet end of the electronic expansion valve is connected with the condenser; the control valve is connected with the capillary tube in parallel through a parallel branch; when the refrigerant flows from the evaporator to the condenser, the control valve is opened; when the refrigerant flows from the condenser to the evaporator, the control valve is closed. In the air conditioner, the electronic expansion valve is used reversely, the capillary tube is additionally arranged, the parallel branch of the capillary tube is controlled to be opened in a one-way mode through the control valve, and when the air conditioner is in a heating standby state, a refrigerant enters from the inlet end of the electronic expansion valve, so that the flowing noise of the refrigerant is effectively reduced; when in refrigeration operation, the front-back pressure difference of the expansion valve is reduced through the capillary tube, and throttling sound is weakened; when the heating device is in heating operation, noise can be reduced, meanwhile, capillary resistance can be avoided by one-way opening of the parallel branch, and heating capacity is improved.

Description

Noise-reducing air conditioner

Technical Field

The utility model relates to an air conditioner technical field especially relates to an air conditioner of making an uproar falls.

Background

The electronic expansion valve for air conditioner is a throttling element controlled by electric pulse, and is mainly used in frequency-variable air-conditioning system. However, when the inverter air conditioner operates under different working conditions, the operating frequency of the compressor is different, the pressure difference of the refrigerant flowing through the electronic expansion valve is different, especially when the compressor operates in a high-frequency region, the flow rate of the refrigerant in the system is accelerated, the electronic expansion valve adjusts the opening degree through superheat degree, in the process of opening degree reduction, the flow rate of the refrigerant is increased and the pressure of the refrigerant is reduced due to rapid contraction of the area of a throttling port, and the pressure difference of the system before and after the refrigerant flows through a valve core is continuously increased, so that the electronic expansion valve of the outdoor unit generates 'hissing' abnormal noise, the physical and mental health of people is influenced, and the normal work and rest of people are.

In the prior art, a capillary tube is added at the front side or the rear side of an electronic expansion valve to reduce noise, but the capillary tube is added in front of the expansion valve, so that a refrigerant is gasified during refrigeration, the dryness of the refrigerant is improved, and the unstable state of the refrigerant is caused, so that the problem cannot be fundamentally solved; the capillary tube is added behind the expansion valve, so that the integral resistance of the heat exchanger is increased during heating, and the heating capacity is reduced.

SUMMERY OF THE UTILITY MODEL

Based on this, the to-be-solved technical problem of the utility model is to provide a noise reduction air conditioner that can reduce the noise that electronic expansion valve produced and can not reduce the ability of heating.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

the utility model provides an air conditioner of making an uproar falls, includes evaporimeter, condenser and electronic expansion valve, still includes:

the first end of the capillary tube is connected with the evaporator, and the second end of the capillary tube is connected with the inlet end of the electronic expansion valve; the outlet end of the electronic expansion valve is connected with the condenser;

a control valve connected in parallel with the capillary tube by a parallel branch; when the refrigerant flows from the evaporator to the condenser, the control valve controls the parallel branch to circulate; and when the refrigerant flows from the condenser to the evaporator, the control valve controls the parallel branch to be closed.

Furthermore, the control valve is a one-way valve, an inlet of the one-way valve is communicated with the evaporator, and an outlet of the one-way valve is communicated with the electronic expansion valve.

Furthermore, the control valve is an electromagnetic valve, and when a refrigerant flows from the evaporator to the condenser, the control valve is opened; when the refrigerant flows from the condenser to the evaporator, the control valve is closed.

Further, the silencer is connected between the capillary tube and the evaporator in series.

Further, the muffler device is an expansion type muffler.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

according to the noise reduction air conditioner, the electronic expansion valve is used reversely, the capillary tube is additionally arranged between the expansion valve and the evaporator, and the parallel branch of the capillary tube is controlled to be opened in a one-way mode through the control valve. When the air conditioner is in a heating standby state, a refrigerant enters from the inlet end of the electronic expansion valve, and the flowing noise of the refrigerant is effectively reduced; during the refrigeration operation, partial pressure drop is shared by the capillary tube, the front-back pressure difference of the expansion valve is reduced, and the throttling sound is weakened; when in heating operation, the noise is reduced by the electronic expansion valve, and meanwhile, the capillary resistance can be avoided by the one-way opening of the parallel branch, so that the heating capacity is effectively improved.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a noise reduction air conditioner of the present invention;

description of reference numerals:

an evaporator 100; a condenser 200; an electronic expansion valve 300; an inlet end 310; an outlet end 320; a capillary tube 400; a control valve 500; the branches 600 are connected in parallel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, it is an embodiment of the noise reduction air conditioner of the present invention. The air conditioner includes an evaporator 100 of an indoor unit of the air conditioner, a condenser 200 of an outdoor unit of the air conditioner, an electronic expansion valve 300, a capillary tube 400, and a control valve 500. The capillary tube 400 is disposed in series between the electronic expansion valve 300 and the evaporator 100. The electronic expansion valve 300 has an inlet end 310 and an outlet end 320. A first end of the capillary tube 400 is connected to the evaporator 100, and a second end is connected to the inlet end 310 of the electronic expansion valve 300; the outlet end 320 of the electronic expansion valve 300 is connected to the condenser 200, i.e. the electronic expansion valve 300 is used in reverse. The control valve 500 is connected in parallel with the capillary tube 400 by a parallel branch 600. When the refrigerant flows from the evaporator 100 to the condenser 200, the control valve 500 controls the parallel branch 600 to circulate; when the refrigerant flows from the condenser 200 to the evaporator 100, the control valve 500 controls the parallel branch 600 to be closed. In the present embodiment, the control valve 500 is preferably a check valve, an inlet of which communicates with the evaporator 100 and an outlet of which communicates with the electronic expansion valve 300. In another embodiment, the control valve 500 may also be a common solenoid valve, and when the refrigerant flows from the evaporator 100 to the condenser 200, the control valve 500 is opened to allow the refrigerant to flow through the parallel branch 600; when the refrigerant flows from the condenser 200 to the evaporator 100, the control valve 500 is closed and the parallel branch 600 is closed.

When the air conditioner operates in a heating mode, a heating standby mode, and a heating operation mode, the refrigerant flows between the evaporator 100 and the condenser 200 in sequence, passing through the evaporator 100 of the indoor unit, then passing through the parallel branch 600 of the capillary tube 400, the electronic expansion valve 300, and then entering the condenser 200 of the outdoor unit. When the refrigerant flows through the electronic expansion valve 300, the refrigerant flows in from the inlet end 310 of the electronic expansion valve 300 and then flows out from the outlet end 320 of the electronic expansion valve 300, the movement direction of the valve core is the same as that of the valve core when the electronic expansion valve 300 performs superheat degree adjustment, and the refrigerant enters from the straight pipe of the electronic expansion valve 300, so that the refrigerant noise is not easy to generate due to smooth passage and small local resistance loss. When the noise reduction air conditioner is in heating operation, the control valve 500 controls the parallel branch 600 to be communicated, so that the capillary resistance of the capillary 400 can be avoided, and the heating capacity is effectively improved.

When the air conditioner operates in a cooling mode and a cooling mode, the flow direction of the refrigerant between the evaporator 100 and the condenser 200 is opposite to that in the heating mode, and accordingly, the refrigerant flows in from the outlet end 320 of the electronic expansion valve 300 and flows out from the inlet end 310 of the electronic expansion valve 300, but because the parallel branch 600 is closed, the refrigerant flows through the capillary tube 400, the capillary tube 400 shares a part of pressure drop, the front-rear pressure difference of the electronic expansion valve 300 is reduced, and the noise generated by throttling is reduced.

The utility model discloses an air conditioner of making an uproar falls, electronic expansion valve 300 reverse use, and increase capillary 400 between expansion valve and evaporimeter 100 to the parallelly connected branch road 600 through control valve 500 control capillary 400 is one-way to be opened. When the noise reduction air conditioner is in a heating standby state, a refrigerant enters from the inlet end 310 of the electronic expansion valve 300, so that the flowing noise of the refrigerant is effectively reduced; during the refrigeration operation, the capillary tube 400 shares part of pressure drop, so that the front-back pressure difference of the electronic expansion valve 300 is reduced, and the throttling sound is weakened; when in heating operation, the noise is reduced by the electronic expansion valve 300, and meanwhile, the capillary resistance can be avoided by the one-way opening of the parallel branch 600, so that the heating capacity is effectively improved.

Further, the air conditioner further includes a muffler device (not shown) connected in series between the capillary tube 400 and the evaporator 100. The muffling device is preferably an intumescent muffler. The refrigerant noise is effectively weakened through the capillary tube 400, the rest refrigerant noise can still be transmitted to the expansion type silencer forwards through the connecting pipeline, the sound wave can be reflected at the sudden change position of the acoustic characteristic, at the moment, a part of the sound wave is reflected back to the sound source direction, only the minimum part of the sound wave is continuously transmitted forwards, and the noise is further weakened.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. The utility model provides an air conditioner of making an uproar falls, includes evaporimeter, condenser and electronic expansion valve, its characterized in that still includes:

2. The noise-reducing air conditioner of claim 1, wherein the control valve is a one-way valve, an inlet of the one-way valve is communicated with the evaporator, and an outlet of the one-way valve is communicated with the electronic expansion valve.

3. The noise reduction air conditioner of claim 1, wherein the control valve is an electromagnetic valve, and the control valve is opened when a refrigerant flows from the evaporator to the condenser; when the refrigerant flows from the condenser to the evaporator, the control valve is closed.

4. A noise-reducing air conditioner according to any one of claims 1 to 3, further comprising a noise-reducing device connected in series between the capillary tube and the evaporator.

5. The noise-reducing air conditioner of claim 4, wherein the muffling device is an expansion type muffler.