CN113389705B

CN113389705B - Compressor variable-capacity assembly, regulation and control method thereof, compressor and air conditioning system

Info

Publication number: CN113389705B
Application number: CN202110837528.4A
Authority: CN
Inventors: 蓝榕江
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-06-24
Anticipated expiration: 2041-07-23
Also published as: CN113389705A

Abstract

The application provides a compressor variable-capacity component, a regulating and controlling method thereof, a compressor and an air conditioning system. This compressor variable volume subassembly includes pump body subassembly, pump body subassembly includes the pump body, be equipped with induction port and at least one gas vent on the pump body: a second exhaust port; the second exhaust port is communicated with the air suction port through a pressure regulating valve. This application is through second gas vent through air-vent valve and induction port intercommunication for pump body combustion gas can partially return, consequently can change the displacement of whole compressor through the degree of opening of regulation and control air-vent valve, realizes the flow of compressor or the infinitely variable control of displacement, thereby has improved flexibility and travelling comfort.

Description

Compressor variable-capacity assembly, regulation and control method thereof, compressor and air conditioning system

Technical Field

The application belongs to the technical field of air conditioning systems, and particularly relates to a compressor variable-capacitance assembly, a regulation and control method thereof, a compressor and an air conditioning system.

Background

Along with the change of the ambient temperature all the year round, the flow of the compressor required by terminal equipment such as an air conditioner, a heat pump and the like is different, if the flow of the compressor is variable, the compressor can be adjusted according to the requirement of the terminal equipment, the use power can be reduced, and the effect of saving energy is achieved.

However, in the prior art, the flow rate of the compressor is changed by adopting a structure such as an inverter type or a variable displacement type, wherein in the structure of a plurality of cylinders, the change of the exhaust gas volume is achieved by controlling the opening and closing of part of the cylinders, but the range of the variable displacement is fixed, and the adaptability is not flexible.

Disclosure of Invention

Therefore, the application provides a compressor variable-capacity component, a regulating and controlling method thereof, a compressor and an air conditioning system, and can solve the problems that in the prior art, the variable-capacity range is fixed and the adaptability is inflexible.

In order to solve the above problems, the present application provides a compressor variable capacity assembly comprising:

the pump body subassembly, the pump body subassembly includes the pump body, be equipped with induction port and at least one gas vent on the pump body: a second exhaust port;

the second exhaust port is communicated with the air suction port through a pressure regulating valve.

Optionally, be equipped with first gas vent on the pump body, first gas vent with through shut-off valve intercommunication between the second gas vent.

Optionally, the pump body assembly further comprises a first exhaust passage and a second exhaust passage, the first exhaust passage is communicated between the first exhaust port and the shutoff valve, and the second exhaust passage is communicated between the second exhaust port and the pressure regulating valve; the first exhaust passage and the second exhaust passage are arranged in a mutually isolated manner.

Optionally, the compressor variable-capacity assembly further comprises a variable-capacity assembly, and the variable-capacity assembly comprises a first cavity, and the first cavity is arranged between the pressure regulating valve and the second exhaust passage.

Optionally, the first cavity comprises an adjusting pipe, one end of the adjusting pipe is communicated with the second exhaust channel, and the other end of the adjusting pipe is communicated with the pressure regulating valve.

Optionally, the second discharge passage comprises a second cavity, and the compressor comprises a muffler in communication with the second discharge port; the second chamber includes the muffler.

Alternatively, the first exhaust port or the second exhaust port is provided in plurality.

According to another aspect of the present application, there is provided a method of regulating a compressor variable capacity assembly as described above, comprising:

opening the pressure regulating valve so that part of the exhaust gas of the pump body returns into the pump body via the second exhaust port and the suction port; and regulating and controlling the exhaust pressure of the pressure regulating valve, and changing the air return quantity of the pump body, so that the exhaust quantity of the pump body is correspondingly changed.

Optionally, the method of regulating further comprises:

the pump body is provided with a first exhaust port, when the first exhaust port is communicated with the second exhaust port through a shutoff valve,

opening the shutoff valve and closing the pressure regulating valve, wherein the exhaust gas volume is set as a first exhaust gas volume V0;

closing the shutoff valve and fully opening the pressure regulating valve, wherein the exhaust gas volume is set as a second exhaust gas volume V1;

closing the shutoff valve, and regulating the exhaust pressure of the pressure regulating valve so that the variation range of the exhaust amount is not less than V1 and not more than V0.

According to a further aspect of the present application, there is provided a compressor comprising a compressor variable capacity assembly as described above or a compressor variable capacity assembly operating in a control method as described above.

Optionally, the compressor includes an upper flange, a lower flange and a cylinder, and the compression chamber wall of the cylinder is provided with the first exhaust port and the second exhaust port; the first exhaust port is arranged on the upper flange and/or the lower flange, and the second exhaust port is arranged on the upper flange and/or the lower flange.

Optionally, the compressor further comprises a sliding vane which is arranged along the radial direction of the cylinder in a telescopic manner; the air suction port is arranged on the side wall of the cylinder; calculating by taking the radius of the slide sheet as a starting point and rotating towards the air suction port side, wherein the corner of the position of the air suction port is b, the corner of the position of the second air exhaust port is a, and the corner of the position of the first air exhaust port is c; c > a > b, and 120 ° < a <240 °.

Optionally, the compressor comprises a roller, the roller has an outer diameter Dr, the cylinder has an inner diameter Dh, and the second exhaust port has a diameter d, such that d ≦ (Dh-Dr).

According to a third aspect of the present application there is provided an air conditioning system comprising a compressor variable capacity assembly as described above or a compressor variable capacity assembly operating in a control method as described above or a compressor as described above.

The application provides a compressor varactor subassembly includes: the pump body subassembly, the pump body subassembly includes the pump body, be equipped with induction port and at least one gas vent on the pump body: a second exhaust port; the second exhaust port is communicated with the air suction port through a pressure regulating valve.

This application is through second gas vent through air-vent valve and induction port intercommunication for pump body combustion gas can partially return, consequently can change the displacement of the whole compressor through the degree of opening of regulation and control air-vent valve, realizes the flow of compressor or the infinitely variable control of displacement, thereby has improved flexibility and travelling comfort.

Drawings

Fig. 1 is a schematic structural view of a compressor according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a pump body assembly according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of another configuration of a pump body assembly according to an embodiment of the present application;

FIG. 4 is a graph illustrating pressure changes in the compression chambers of the pump block assembly according to an embodiment of the present application;

FIG. 5 is a COP of the variable volume pump body assembly of an embodiment of the present application;

fig. 6 is a schematic diagram illustrating a variation in the variable volume ratio of the pump body assembly according to the embodiment of the present application.

The reference numerals are represented as:

1. a pump body assembly; 11. a cylinder; 111. an air suction port; 112. a first exhaust port; 113. a second exhaust port; 12. a roller; 13. sliding blades; 2. a compressor discharge pipe; 3. a varactor; 4. closing the valve; 5. a pressure regulating valve.

Detailed Description

Referring collectively to fig. 1-6, in accordance with an embodiment of the present application, a compressor variable capacity assembly, comprises:

pump body subassembly 1, pump body subassembly 1 includes the pump body, be equipped with induction port 111 and at least one gas vent on the pump body: a second exhaust port 113;

the second exhaust port 113 and the intake port 111 communicate with each other through a pressure regulating valve 5.

In the structure of the pump body assembly 1 of the compressor, as shown in fig. 1, the pump body sucks in low-pressure gas through a suction port 111 and then discharges high-pressure gas through a first exhaust port 112 and a second exhaust port 113; in the present application, the first exhaust port 112 is communicated with the compressor exhaust pipe 2, and the second exhaust port 113 is communicated with the suction port 111 through the pressure regulating valve 5, that is, the high-pressure gas discharged through the second exhaust port 113 is returned to the pump body, so that the displacement of the whole high-pressure gas output by the pump body is only a part of the capacity of the inner cavity of the whole pump body.

The pressure regulating valve 5 is a device for changing the pressure of the gas before and after passing through the valve, and in this application, the pressure of the gas returned to the cylinder by the high-pressure gas discharged from the second gas discharge port 113 is changed to actually adjust the amount of the gas returned to the cylinder by the pressure regulating valve 5, so that the capacity of the gas discharged from the gas discharge port of the cylinder can be changed by adjusting and controlling the pressure regulating valve 5.

Because the pressure regulating valve 5 is finely regulated, the displacement of the pump body can realize stepless change, and the flexibility is good, thereby solving the problems that the range of variable volume is fixed and the adaptability is not flexible in the prior art.

In some embodiments, a first exhaust port 112 is provided on the pump body, and the first exhaust port 112 communicates with the second exhaust port 113 through a shut-off valve 4.

The arrangement of the shut-off valve 4 on the pipeline communicating between the first exhaust port 112 and the second exhaust port 113 enables the compressor of the present application to adapt to the adjustability of various applications, such as the adjustment of the opening and closing of the shut-off valve 4 and the adjustment of the opening and closing of the pressure regulating valve 5.

In some embodiments, the pump body assembly 1 further comprises a first exhaust channel communicating between said first exhaust port 112 and said shut-off valve 4, and a second exhaust channel communicating between said second exhaust port 113 and said pressure regulating valve 5; the first exhaust passage and the second exhaust passage are arranged in a mutually isolated manner.

Two mutually isolated exhaust channels are arranged on the pump body component 1: a first exhaust passage communicating between the first exhaust port 112 and the shut-off valve 4, and a second exhaust passage communicating between the second exhaust port 113 and the pressure-regulating valve 5; the high-pressure air exhausted from the two exhaust ports of the pump body can operate independently, and is convenient to regulate and control.

In some embodiments, the compressor variable displacement assembly further comprises a variable displacement assembly comprising a first cavity disposed between the pressure regulating valve 5 and the second discharge passage.

Adopt the structure that has first cavity to come as the varactor subassembly for the exhaust high-pressure gas of second exhaust passage can cache, through air-vent valve 5, has reduced the pressure differential through air-vent valve 5, is convenient for regulate and control valve 5.

In some embodiments, the first chamber comprises a regulating tube, one end of which communicates with said second exhaust channel and the other end of which communicates with said pressure regulating valve 5.

The specific structure of the first cavity can be a tubular structure of an adjusting pipe, and the first cavity is connected between the second exhaust channel and the pressure adjusting valve 5, so that the structure is simple, and the assembly is convenient.

In some embodiments, the second discharge passage comprises a second cavity, and the compressor comprises a muffler in communication with the second discharge port 113; the second chamber includes the muffler.

In the pump assembly 1, the second exhaust passage further includes a second cavity, which may be a muffler communicated with the second exhaust port 113, and plays a role of buffering high pressure. Preferably, the first exhaust port 112 or the second exhaust port 113 is provided in plural, so that the exhaust amount can be more finely controlled.

opening the pressure regulating valve 5 so that part of the exhaust gas of the pump body returns into the pump body via the second exhaust port 113 and the suction port 111; and regulating and controlling the exhaust pressure of the pressure regulating valve 5, and changing the air return quantity of the pump body, so that the exhaust quantity of the pump body is correspondingly changed.

In some embodiments, the method of modulating further comprises:

a first exhaust port 112 is arranged on the pump body, when the first exhaust port 112 is communicated with the second exhaust port 113 through a shutoff valve 4,

opening the shutoff valve 4 and closing the pressure regulating valve 5, wherein the displacement is set to be a first displacement V0;

closing the shutoff valve 4 to fully open the pressure regulating valve 5, wherein the displacement is set to a second displacement V1;

closing the shutoff valve 4, and regulating the exhaust pressure of the pressure regulating valve 5 so that the exhaust amount varies in a range of not less than V1 and not more than V0.

The operation method can realize at least three air displacement:

1. when the full-volume efficient compression is required, the shut-off valve 4 is fully opened, the pressure regulating valve 5 is fully closed, the pressure Pv of the second exhaust channel is equal to the exhaust pressure Pd of the compressor, and when the pressure of the compression cavity reaches the exhaust pressure Pd, the first exhaust channel and the second exhaust channel both exhaust, so that the multi-exhaust effect is realized, and the exhaust power is reduced. The sum of the displacement amounts of the first exhaust passage and the second exhaust passage at this time is V0, which is the total displacement of the compression chamber.

2. In the minimum volume function, the shutoff valve 4 is fully closed, and the pressure regulating valve 5 is fully opened, and at this time, the second exhaust passage pressure Pv corresponds to the intake pressure Ps, and the air flow of the second exhaust passage flows back to the intake port 111. The flow rate discharged to the compressor discharge pipe 2 through the first discharge passage is V1, which is the minimum discharge capacity of the compressor.

3. When the stepless adjustment volume-changing function is performed, the shutoff valve 4 is completely closed, the pressure regulating valve 5 is adjusted to enable the second exhaust channel to be at different pressures Pv, the flow rate of the second exhaust channel is adjusted between 0-V0-V1, and the flow rate of the corresponding first exhaust channel is V1-V0.

The principle is described as follows:

when the pressure of one side of the compression cavity of the compressor is higher than the pressure of the second exhaust channel, the valve plate of the second exhaust port 113 is opened, and gas flows out of the second exhaust channel;

the line formed by the dotted lines shown in fig. 4 is a pressure change curve of the compression chamber in normal compression;

if the compression force of the second exhaust passage is 1.5Mpa, as shown by the line of thin solid lines, the valve plate of the second exhaust port 113 is opened when the compression chamber exceeds 1.5Mpa, and the compression chamber returns to normal compression until the second exhaust port 113 is not communicated with the compression chamber (e.g. 210 °);

if the compression force of the second exhaust passage is 2.0Mpa, the valve plate of the second exhaust port 113 is opened when the compression chamber exceeds 2.0Mpa, and the compression chamber returns to normal compression when the second exhaust port 113 is not communicated with the compression chamber (e.g. 210 °);

by adjusting the pressure of the second exhaust passage, the flow of the first exhaust passage becomes steplessly adjustable within a certain range.

In some embodiments, the compressor includes an upper flange, a lower flange and a cylinder 11, and the first exhaust port 112 and the second exhaust port 113 are disposed on a compression cavity wall of the cylinder 11; the first exhaust port 112 is disposed on the upper flange and/or the lower flange, and the second exhaust port 113 is disposed on the upper flange and/or the lower flange.

For a structure in which a plurality of discharge passages are provided in the compressor, as shown in fig. 1, a first discharge passage is provided on the upper flange and communicates with the compressor discharge pipe 2; the second exhaust channel is positioned on the lower flange and forms an independent cavity together with the lower flange, the lower silencer or the cover plate and the like; as also shown in fig. 2, the second discharge passage communicates with the compressor outside varactor 3.

In addition, as shown in fig. 3, the first exhaust channel and the second exhaust channel are located on the same side, including both being on the upper flange or the lower flange, or both being provided at the same time, and only the first exhaust channel and the second exhaust channel need to be isolated and independent from each other through structures (grooves, cover plates, etc.).

The structure of the application is used for a double-cylinder or multi-cylinder compressor, a partition plate assembly is arranged between two cylinders 11, and the partition plate assembly consists of an upper partition plate and a lower partition plate; a second exhaust channel can be designed on the upper clapboard; or designing the first exhaust passage and the second exhaust passage simultaneously; a second exhaust channel can be designed on the lower clapboard; or both the first exhaust passage and the second exhaust passage may be designed.

In some embodiments, the compressor further comprises a sliding vane 13 extending and contracting along the radial direction of the cylinder 11; the air suction port 111 is arranged on the side wall of the cylinder 11; calculating by taking the radius of the sliding vane 13 as a starting point and rotating towards the suction port 111 side, where a corner of the position of the suction port 111 is b, a corner of the position of the second exhaust port 113 is a, and a corner of the position of the first exhaust port 112 is c; c > a > b, and 120 ° < a <240 °.

Still alternatively, the compressor includes a roller 12, the roller 12 having an outer diameter Dr, the cylinder 11 having an inner diameter Dh, and the second discharge port 113 having a diameter d, such that d ≦ (Dh-Dr).

The result of setting the above parameters is shown in fig. 5 and 6, which is very effective.

The application can satisfy different ambient temperature changes, and at the high-efficient compression of full volume and stepless varactor switching, the homoenergetic satisfies the equipment demand under each stage, nevertheless realizes energy-efficient effect.

It is easily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be regarded as the protection scope of the present application.

Claims

1. A compressor displacement block, comprising:

the pump body assembly (1), the pump body assembly (1) includes the pump body, there are air entry (111) and at least one air vent on the said pump body, at least one air vent includes the first air vent (112) and second air vent (113);

the second exhaust port (113) is communicated with the air suction port (111) through a pressure regulating valve (5);

the first exhaust port (112) is communicated with the second exhaust port (113) through a shut-off valve (4).

2. The compressor variable-capacity assembly according to claim 1, wherein the pump body assembly (1) further comprises a first exhaust passage and a second exhaust passage, the first exhaust passage is communicated between the first exhaust port (112) and the shut-off valve (4), and the second exhaust passage is communicated between the second exhaust port (113) and the pressure regulating valve (5); the first exhaust passage and the second exhaust passage are arranged in a mutually isolated manner.

3. Compressor variable-capacity assembly according to claim 2, further comprising a variable-capacity assembly comprising a first cavity provided between the pressure regulating valve (5) and the second discharge channel.

4. Compressor varactor assembly according to claim 3, characterized in that the first cavity comprises a regulating tube, one end of which communicates with the second discharge channel and the other end communicates with the pressure regulating valve (5).

5. The compressor varactor assembly according to any one of claims 2-4, characterized in that, the second discharge passage comprises a second cavity, and the compressor comprises a muffler communicating with the second discharge port (113); the second chamber includes the muffler.

6. The compressor varactor assembly of claim 5, characterized in that, the first exhaust port (112) or the second exhaust port (113) is provided in plurality.

7. A method of regulating a compressor displacement varying assembly according to any one of claims 1 to 6, comprising:

opening the pressure regulating valve (5) so that part of the exhaust gas of the pump body returns into the pump body via the second exhaust port (113) and the suction port (111); and regulating and controlling the exhaust pressure of the pressure regulating valve (5), and changing the air return quantity of the pump body, so that the exhaust quantity of the pump body is correspondingly changed.

8. The method for regulating and controlling of claim 7, further comprising:

a first exhaust port (112) is arranged on the pump body, when the first exhaust port (112) is communicated with the second exhaust port (113) through a shut-off valve (4),

opening the shutoff valve (4) and closing the pressure regulating valve (5), wherein the exhaust gas amount is set as a first exhaust gas amount V0;

closing the shutoff valve (4) and fully opening the pressure regulating valve (5), wherein the displacement is set to a second displacement V1;

closing the shutoff valve (4), and regulating the exhaust pressure of the pressure regulating valve (5) so that the variation range of the exhaust amount is not less than V1 and not more than V0.

9. A compressor comprising a compressor variable capacity module according to any one of claims 1 to 6 or a compressor variable capacity module operated according to the regulation method of any one of claims 7 to 8.

10. The compressor of claim 9, characterized in that the compressor comprises an upper flange, a lower flange and a cylinder (11), wherein the first exhaust port (112) and the second exhaust port (113) are arranged on the wall of the compression cavity of the cylinder (11); the first exhaust port (112) is arranged on the upper flange and/or the lower flange, and the second exhaust port (113) is arranged on the upper flange and/or the lower flange.

11. Compressor according to claim 10, characterized in that it further comprises sliding vanes (13) telescopically arranged along the radial direction of said cylinder (11); the air suction port (111) is arranged on the side wall of the cylinder (11); calculating by taking the radius of the sliding sheet (13) as a starting point and rotating towards the air suction port (111), wherein the corner of the position of the air suction port (111) is b, the corner of the position of the second exhaust port (113) is a, and the corner of the position of the first exhaust port (112) is c; c > a > b, and 120 ° < a <240 °.

12. The compressor of claim 11, comprising a roller (12), wherein the roller (12) has an outer diameter Dr, the cylinder (11) has an inner diameter Dh, and the second discharge port (113) has a diameter d satisfying d ≦ (Dh-Dr).

13. An air conditioning system comprising a compressor variable capacity module according to any one of claims 1 to 6 or a compressor variable capacity module operating in accordance with the regulation method of any one of claims 7 to 8 or a compressor according to any one of claims 9 to 12.