CN113482927A

CN113482927A - Double-scroll compressor

Info

Publication number: CN113482927A
Application number: CN202110935945.2A
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: 2021-10-08

Abstract

The invention discloses a double-scroll compressor, which comprises a shell, wherein a driving motor is arranged in the shell, and the driving motor comprises a stator, a rotor and a motor shaft; a first movable scroll, a first fixed scroll, a second movable scroll and a second fixed scroll are arranged in the shell above the driving motor from bottom to top; a guide vane valve is arranged on the first fixed scroll; a variable speed gear device is arranged between the first fixed scroll and the second movable scroll through a variable speed gear shaft; the shell is provided with a low-pressure air suction port and a high-pressure air exhaust port; the air source heat pump has the advantages of being capable of improving the efficiency of the air source heat pump, reducing the using energy consumption of an air conditioning system, reasonable in structure, small in size, light in weight, small in vibration, small in energy consumption, long in service life and the like.

Description

Double-scroll compressor

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to a double-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. The most important part of the air source heat pump is a compressor, and most of the air source heat pumps on the market adopt a scroll compressor. The scroll compressor has only bad saprodontia at the main operating part of the scroll compressor, so the service life is longer, and the compressor is known as a maintenance-free compressor. The scroll compressor has stable operation, small vibration and quiet working environment, and is known as a hyperstatic compressor. The scroll compressor has the advantages of novel structure, good precision performance, small volume, low noise, light weight, small vibration, small energy consumption, long service life, continuous and stable gas transmission, reliable operation, clean gas source and the like, and is widely applied to the air source heat pump system.

Disclosure of Invention

The invention provides a double-vortex compressor, which aims to further improve the operating efficiency of an air source heat pump, reduce the use energy consumption of an air conditioning system, and simultaneously has the advantages of good precision performance, small volume, low noise, light weight, small vibration, small energy consumption, long service life, continuous and stable gas transmission, reliable operation and the like.

The invention specifically comprises the following scheme:

the invention provides a double-scroll compressor, which comprises a shell, wherein a driving motor is arranged in the shell, and the driving motor comprises a stator, a rotor and a motor shaft; a first movable scroll, a first fixed scroll, a second movable scroll and a second fixed scroll are arranged in the shell above the driving motor from bottom to top; a guide vane valve is arranged on the first fixed scroll; a speed change gear device is arranged between the first fixed scroll and the second movable scroll through a speed change gear shaft; the shell is provided with a low-pressure air suction port and a high-pressure air exhaust port.

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

Preferably, the low pressure suction port is provided between the driving motor and the first orbiting scroll.

Preferably, the driving motor is disposed at a lower portion in the housing.

Preferably, an oil blocking net is installed in the shell above the second non-fixed scroll.

Preferably, the high-pressure exhaust port is arranged above the oil blocking net.

Preferably, the oil blocking net is an arc-shaped net which is arched upwards.

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

Preferably, an oil pool is arranged in the shell below the motor shaft.

Preferably, a base is installed at the bottom of the shell.

The invention has the beneficial effects that:

the double-vortex compressor of the invention has the following advantages: 1. the efficiency of refrigeration cycle can be improved, the performance coefficient of refrigeration is improved, and the energy-saving significance is achieved; 2. the exhaust temperature of the compressor is reduced, the operation condition of the compressor is improved, and the operation life of the compressor is prolonged; 3. the invention can realize the function of changing the compression process curve of one compressor, and can be widely applied to high-efficiency refrigeration systems by matching with an advanced control system; the air source heat pump has the advantages of being capable of improving the efficiency of the air source heat pump, reducing the using energy consumption of an air conditioning system, reasonable in structure, small in size, light in weight, small in vibration, small in energy consumption, long in service life and the like.

Drawings

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

FIG. 1 is a schematic view of a twin scroll compressor configuration of the present invention.

Fig. 2 is a refrigerant pressure-enthalpy diagram.

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

In fig. 1, 1 is a casing, 2 is a stator, 3 is a rotor, 4 is a motor shaft, 5 is a first movable scroll, 6 is a first fixed scroll, 7 is a second movable scroll, 8 is a second fixed scroll, 9 is a guide vane valve, 10 is a change gear shaft, 11 is a change gear device, 12 is a low-pressure air inlet, 13 is a high-pressure air outlet, 14 is an oil barrier net, and 15 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 invention, and not restrictive of the full scope of the invention. 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, the twin scroll compressor comprises a shell 1, a driving motor is arranged in the shell 1, and the driving motor comprises a stator 2, a rotor 3 and a motor shaft 4; a first movable scroll 5, a first fixed scroll 6, a second movable scroll 7 and a second fixed scroll 8 are arranged in the shell 1 above the driving motor from bottom to top; a guide vane valve 9 is arranged on the first fixed scroll 6; a speed change gear device 11 is arranged between the first fixed scroll 6 and the second movable scroll 7 through a speed change gear shaft 10; the housing 1 is provided with a low-pressure suction port 12 and a high-pressure discharge port 13.

Further, the low pressure suction port 12 may be disposed below the high pressure discharge port 13.

Further, the low pressure suction port 12 may be provided between the driving motor and the first orbiting scroll 5.

Further, the driving motor may be disposed at a lower portion inside the housing 1.

Further, an oil barrier net 14 may be installed in the casing 1 above the second fixed scroll 8.

Further, the high pressure exhaust port 13 may be disposed above the oil barrier net 14.

Further, the oil barrier net 14 may be an upwardly arched net.

Further, the oil barrier net 14 may be an upwardly arched spherical net.

Further, an oil sump 15 may be installed in the housing 1 below the motor shaft 4.

Further, a base is installed at the bottom of the housing 1.

In the double-scroll compressor of the above embodiment, the first-stage scroll includes the first movable scroll 5 and the first fixed scroll 6, and the second-stage scroll includes the second movable scroll 7 and the second fixed scroll 8; the first stage scroll compresses a low-temperature low-pressure refrigerant gas sucked from a low-pressure suction port 12 of the compressor into a medium-temperature medium-pressure refrigerant gas; then the refrigerant is pressurized by the second scroll, and the refrigerant is changed into high-temperature and high-pressure refrigerant gas from medium-temperature and medium-pressure gas. And then discharged to a condenser through a high-pressure exhaust port 13 of the compressor to be condensed and released heat, thereby completing the refrigeration cycle. The compression curve of compressor is influenced by the rotational speed of drive shaft, i.e. the rotational speed of motor shaft 4 and change gear shaft 10, and the rotational speed of motor shaft 4 is directly controlled by the motor, through the drive ratio of control change gear 11, can change the rotational speed of change gear shaft 10, and then can control the compression curve of first order vortex dish and second level vortex dish for the compressor can more efficient operation.

As shown in fig. 2, the energy saving principle of the twin scroll compressor of the above embodiment is as follows: the low-temperature low-pressure refrigerant gas (state I) is compressed by the first-stage scroll to be changed into a state II, the compression curve of the second-stage scroll is different from that of the first-stage scroll due to the adjustment of the speed change gear device 11, and the refrigerant gas is compressed by the second-stage scroll from the state II to be changed into a state III. Then the refrigerant is discharged from a high-pressure exhaust port 13 of the compressor, enters the condenser, is changed into low-temperature high-pressure refrigerant liquid (state IV), is throttled by a throttling device, is changed into low-temperature low-pressure refrigerant liquid (state V), is evaporated and absorbs heat in the evaporator, is changed into a state I from the state V, and is circulated continuously. As can be seen from the pressure-enthalpy diagram, the compression process of the compressor is I-II-III, rather than the compression process of the conventional compressor I-II-VI. According to the prior knowledge of engineering thermodynamics, in an ideal refrigeration cycle, the area of the envelope of the process curve of the refrigeration cycle is equal to the power consumption of the compressor. After the double-vortex compressor of the embodiment is adopted, the power consumption of the compressor is the area enveloped by the processes I-II-III-IV-V-I; and the power consumption of the compressor of the conventional compression refrigeration cycle is I-II-VI-IV-V-I. Meanwhile, the refrigerating capacity of the two refrigerating cycles is the same (both are from V-I), so that the refrigerating coefficient is improved compared with that of the conventional refrigerating cycle after the double-scroll compressor of the embodiment is adopted. In addition, compared with the processes I-II-VI, the processes I-II-III have the advantages that the exhaust temperature of the compressor is lower, and the operation working condition of the compressor is better, so that the service life of the compressor is prolonged.

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-scroll compressor comprises a shell, wherein a driving motor is arranged in the shell, and comprises a stator, a rotor and a motor shaft; the device is characterized in that a first movable scroll, a first fixed scroll, a second movable scroll and a second fixed scroll are arranged in the shell above the driving motor from bottom to top; a guide vane valve is arranged on the first fixed scroll; a speed change gear device is arranged between the first fixed scroll and the second movable scroll through a speed change gear shaft; the shell is provided with a low-pressure air suction port and a high-pressure air exhaust port.

2. The twin scroll compressor of claim 1, wherein said low pressure suction port is disposed below said high pressure discharge port.

3. The twin scroll compressor of claim 2, wherein said low pressure suction port is disposed between said drive motor and said first orbiting scroll.

4. The twin scroll compressor of claim 3, wherein said drive motor is disposed in a lower portion of said housing.

5. The twin scroll compressor of claim 1, wherein an oil barrier is mounted in said shell above said second non-orbiting scroll.

6. The twin scroll compressor of claim 5, wherein said high pressure discharge port is disposed above said oil barrier.

7. The twin scroll compressor of claim 5, wherein said oil barrier is an upwardly arched arcuate net.

8. The twin scroll compressor of claim 7, wherein said oil barrier is an upwardly arched spherical screen.

9. The twin scroll compressor according to claim 1, wherein an oil sump is mounted in said housing below said motor shaft.

10. The twin scroll compressor according to claim 1, wherein said shell bottom mounts.