CN215830722U

CN215830722U - Two-stage compression scroll compressor

Info

Publication number: CN215830722U
Application number: CN202121911319.1U
Authority: CN
Inventors: 王作林; 邱韦淇; 王星棋; 王一然; 梁斌; 曲志光
Original assignee: Qingdao Tengyuan Design Institute Co Ltd
Current assignee: Qingdao Tengyuan Design Institute Co Ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-15
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a two-stage compression scroll compressor, wherein a low-pressure air suction port and a high-pressure air exhaust port are arranged on a compressor shell; a driving motor is arranged at the lower part in the compressor shell and comprises a stator, a rotor and a shaft; a first movable scroll, a first fixed scroll, a second movable scroll and a second fixed scroll which are positioned above the driving motor are sequentially arranged in the compressor shell from bottom to top; a guide vane valve is arranged at the outlet of the first fixed scroll; the compression device can reduce the overheating loss in the compression process, and has low energy efficiency and high performance coefficient; the evaporation temperature can be prepared at a lower temperature, and the application range is wide; the compressor has low rotating speed, low noise and long service life; the air source heat pump system can realize higher pressure ratio, can operate at lower evaporation temperature, widens the application range, and can still ensure powerful heating when the outdoor temperature is lower in winter when being applied to an air source heat pump system.

Description

Two-stage compression scroll compressor

Technical Field

The utility model belongs to the technical field of air conditioners, and particularly relates to a two-stage compression scroll compressor.

Background

With the improvement of living standard of people, the requirements of people on indoor environment are higher and higher. Air conditioners are widely used. The air source heat pump is popular among users due to the advantages of simple installation, flexible use and the like. However, when the outdoor temperature of the air source heat pump is low in winter, the problems of insufficient heating capacity, low heating efficiency and the like exist, and the application of the air source heat pump in severe cold and cold regions is limited. The above problems occur mainly because when the outdoor temperature is low in winter, the evaporation pressure of the air source heat pump is low, the pressure ratio of the compressor is limited, and the outlet water temperature of the air source heat pump air conditioner hot water is difficult to be ensured.

SUMMERY OF THE UTILITY MODEL

The utility model provides a two-stage compression scroll compressor, and aims to solve the problems of insufficient heating capacity, low heating efficiency and the like of an air source heat pump when the outdoor temperature of the air source heat pump is low in winter and the air source heat pump is low in winter, so that the problems of insufficient heating capacity, low heating efficiency and limitation of the application of the air source heat pump in severe cold and cold regions are caused due to the limitation of the application of the air source heat pump in severe cold and cold regions.

The utility model specifically comprises the following scheme:

the utility model provides a two-stage compression scroll compressor, which comprises a compressor shell, wherein a low-pressure air suction port and a high-pressure air exhaust port are arranged on the compressor shell; a driving motor is arranged at the lower part in the compressor shell and comprises a stator, a rotor and a shaft; a first movable scroll, a first fixed scroll, a second movable scroll and a second fixed scroll which are positioned above the driving motor are sequentially arranged in the compressor shell from bottom to top; and the first fixed scroll is provided with a guide vane valve.

Preferably, a low pressure chamber is formed between the driving motor and the first movable scroll.

Preferably, an intermediate pressure chamber is formed between the first fixed scroll and the second movable scroll.

Preferably, an oil blocking net positioned above the second non-orbiting scroll is arranged in the compressor shell.

Preferably, a high-pressure cavity is formed between the oil blocking net and the top of the compressor shell.

Preferably, the oil blocking net is an upwardly arched curved net.

Preferably, the curved net is a spherical net.

Preferably, an oil pool located below the shaft is arranged in the bottom of the compressor shell.

Preferably, the bottom end of the compressor shell is provided with a base.

Preferably, the low pressure suction port is located below the high pressure discharge port.

The utility model has the beneficial effects that:

the two-stage compression scroll compressor has the following advantages: 1. the overheating loss in the compression process is reduced, the energy efficiency is low, and the performance coefficient is high; 2. the evaporation temperature can be prepared at a lower temperature, and the application range is wide; 3. the compressor has low rotating speed, low noise and long service life; the air source heat pump system can realize higher pressure ratio, can operate at lower evaporation temperature, widens the application range, and can still ensure powerful heating when the outdoor temperature is lower in winter when being applied to the air source heat pump system.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural view of a two-stage compression scroll compressor according to the present invention.

The arrows in fig. 1 indicate the refrigerant gas flow direction.

In the figure, 1 is a compressor housing, 2 is a low-pressure air inlet, 3 is a high-pressure air outlet, 4 is a stator, 5 is a rotor, 6 is a shaft, 7 is a first movable scroll, 8 is a first fixed scroll, 9 is a second movable scroll, 10 is a second fixed scroll, 11 is a guide vane valve, 12 is a low-pressure cavity, 13 is a medium-pressure cavity, 14 is an oil barrier net, 15 is a high-pressure cavity, and 16 is an oil sump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Examples

As shown in fig. 1, a two-stage compression scroll compressor includes a compressor housing 1, and a low-pressure suction port 2 and a high-pressure discharge port 3 are disposed on the compressor housing 1; a driving motor is arranged at the lower part in the compressor shell 1 and comprises a stator 4, a rotor 5 and a shaft 6; a first movable scroll 7, a first fixed scroll 8, a second movable scroll 9 and a second fixed scroll 10 which are positioned above the driving motor are sequentially arranged in the compressor shell 1 from bottom to top; and a guide vane valve 11 is arranged on the first fixed scroll 8.

Further, a low pressure chamber 12 is formed between the drive motor and the first orbiting scroll 7.

Further, an intermediate pressure chamber 13 is formed between the first fixed scroll 8 and the second orbiting scroll 9.

Further, an oil blocking net 14 is arranged in the compressor shell 1 and above the second fixed scroll 10.

Further, a high pressure chamber 15 is formed between the oil barrier net 14 and the top of the compressor shell 1.

Further, the oil barrier net 14 is a curved net which is arched upwards.

Further, the curved net is a spherical net.

Further, an oil sump 16 is arranged in the bottom of the compressor housing 1 and below the shaft 6.

Further, the bottom end of the compressor shell 1 is provided with a base.

Further, the low pressure suction port 2 is located below the high pressure discharge port 3.

The working principle of the two-stage compression scroll compressor of the embodiment is as follows: the low-temperature low-pressure refrigerant gas from the evaporator flows into the compressor from a low-pressure air suction port 2 of the compressor, cools the driving motor of the compressor, enters a first-stage scroll, comprises a first movable scroll 7 and a first fixed scroll 8, and flows out from an outlet of the first-stage scroll after being compressed into the refrigerant gas with medium temperature and pressure in the first-stage scroll. The refrigerant gas flowing out of the first stage scroll is then introduced into the suction port of the second stage scroll, the first stage scroll is composed of a first movable scroll 7 and a first fixed scroll 8, the second stage scroll is composed of a second fixed scroll 10 and a second movable scroll 9, and the refrigerant gas is compressed into high-temperature and high-pressure refrigerant gas in the second stage scroll and then discharged from the high-pressure discharge port 3 of the compressor. Wherein the guide vane valve 11 arranged at the outlet of the first-stage vortex plate has the following functions: regulating the refrigerant flow and regulating the intermediate pressure.

The two-stage compression scroll compressor of the above embodiment can realize two-stage compression by adopting two compressors to operate in series, that is, the high-pressure exhaust port 3 of one compressor is connected with the low-pressure suction port 2 of the other compressor, and at this time, because two compressors are needed, the cost is high, the occupied space is large, and the system is complex.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A double-stage compression scroll compressor comprises a compressor shell, wherein a low-pressure air suction port and a high-pressure air exhaust port are formed in the compressor shell; the compressor is characterized in that a driving motor is arranged at the lower part in the compressor shell, and comprises a stator, a rotor and a shaft; a first movable scroll, a first fixed scroll, a second movable scroll and a second fixed scroll which are positioned above the driving motor are sequentially arranged in the compressor shell from bottom to top; and a guide vane valve is arranged at the outlet of the first fixed scroll.

2. The dual-stage compression scroll compressor of claim 1, wherein a low pressure cavity is formed between the drive motor and the first orbiting scroll.

3. The dual-stage compression scroll compressor of claim 1, wherein an intermediate pressure cavity is defined between the first fixed scroll and the second orbiting scroll.

4. The dual stage compression scroll compressor of claim 1, wherein an oil barrier positioned above the second non-orbiting scroll is disposed within the compressor housing.

5. The dual stage compression scroll compressor of claim 4, wherein a high pressure cavity is defined between the oil barrier and a top of the compressor shell.

6. The dual stage compression scroll compressor of claim 4, wherein the oil barrier net is an upwardly crowned curved net.

7. The dual stage compression scroll compressor of claim 6, wherein the curved mesh is a spherical mesh.

8. The dual stage compression scroll compressor of claim 1, wherein an oil sump is provided in a bottom portion of the compressor housing below the shaft.

9. The dual stage compression scroll compressor of claim 1, wherein a base is provided at a bottom end of the compressor housing.

10. The dual stage compression scroll compressor of claim 1, wherein the low pressure suction port is located below the high pressure discharge port.