CN112145428A

CN112145428A - Upper shell cover assembly of compressor, compressor and refrigeration equipment

Info

Publication number: CN112145428A
Application number: CN201910568700.3A
Authority: CN
Inventors: 匡勇军; 朱文杰; 周忆; 应哲强
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-12-29

Abstract

The invention relates to an upper shell cover assembly of a compressor, the compressor and refrigeration equipment. The invention has the advantages that the liquid storage device is arranged at the top of the upper shell cover and further arranged at the upper end of the compressor body, so that the balance and the reliability of the whole structure of the compressor can be improved, and the installation space required by the compressor can be reduced.

Description

Upper shell cover assembly of compressor, compressor and refrigeration equipment

Technical Field

The invention relates to the technical field of compressor manufacturing, in particular to an upper shell cover assembly of a compressor, the compressor and refrigeration equipment.

Background

The rolling rotor type compressor applied to the field of refrigeration systems and air conditioners at present is generally provided with a liquid storage device based on the consideration of factors such as liquid impact prevention and the like. As shown in fig. 1, the conventional rolling rotor compressor includes a liquid storage 10 and a compressor body 20, wherein a suction port (not labeled) is disposed on the compressor body 20, an air inlet pipe 11 is disposed on the liquid storage 10, and a refrigerant outlet (not labeled) is further disposed on the liquid storage 10, and the refrigerant outlet is connected to the suction port through an external connection pipe 30, so that the compressor body 20 is connected to the liquid storage 10. However, when the rolling rotor type compressor is vertically installed, there are several problems with this structure:

first, the accumulator 10 is disposed at one side of the compressor body 20, and the center of gravity of the entire rolling rotor compressor is deviated from the center line of rotation of the compressor body 20, so that the rolling rotor compressor vibrates greatly due to the deviation of the center of gravity during actual operation. In addition, as the displacement and volume of the rolling rotor compressor are increased, the volume (i.e. height and diameter) of the accumulator is also increased, and the problem of unbalance of the whole structure of the rolling rotor compressor is further increased.

Secondly, because rolling rotor compressor overall structure is unbalanced for the compressor vibration is great, causes the inside pipeline of compressor and outlet duct vibration increase, thereby has reduced rolling rotor compressor's reliability.

Thirdly, when the displacement and the volume of the compressor are increased, the volume of the liquid storage device is increased, and the height of the liquid storage device is even higher than that of the compressor body, so that the overall dimension of the rolling rotor type compressor is increased, and the requirement for a larger installation space is caused.

Disclosure of Invention

The invention aims to provide an upper shell cover assembly of a compressor, the compressor and refrigeration equipment, and aims to solve the problems that the existing compressor is unbalanced in overall structure, large in installation space and the like.

In order to achieve the above object, the present invention provides an upper housing cover assembly, which includes an upper housing cover and a liquid reservoir disposed on a top portion of the upper housing cover.

Optionally, the reservoir is arranged coaxially with the upper housing cover.

Optionally, the reservoir includes a reservoir housing having a bottom wall connected to a top portion of the upper housing cover.

Optionally, a heat insulation pad is disposed between the bottom wall and the top of the upper housing cover.

Optionally, the reservoir includes a reservoir housing, an opening is formed at a lower end of the reservoir housing, and a top of the upper housing cover is connected to the lower end of the reservoir housing and closes the opening.

Optionally, the reservoir comprises a reservoir housing and an inner connection tube; the liquid accumulator shell is provided with an upper space and a lower space, the upper space is used for storing gaseous refrigerants, and the lower space is used for storing liquid refrigerants; the inner connecting pipe is arranged in the lower space, one end of the inner connecting pipe is communicated with the upper space, and the other end of the inner connecting pipe is used for leading out gaseous refrigerants;

wherein: and an oil return pipe is arranged on the inner connecting pipe and is used for communicating the lower space with the inner connecting pipe so as to enable the liquid engine oil to flow back to the inner connecting pipe.

Optionally, the oil return pipe is a siphon oil return pipe.

In addition, in order to achieve the above object, the present invention provides a compressor, comprising a compressor housing, the compressor housing comprising a main housing and the above upper housing cover assembly; wherein, the upper shell cover assembly is arranged on the top of the main shell.

Optionally, the upper housing cover includes a cover body and an extension portion, the extension portion extends downward from an edge of the cover body, an outer surface of a portion of the extension portion close to the cover body is connected to the reservoir housing, and an end of the extension portion away from the cover body is sleeved inside the main housing; or one end of the extension part, which is far away from the cover body, is sleeved on the outer side of the main shell body.

Optionally, the upper case cover includes a cover body and an extension portion, the extension portion extends upward from an edge of the cover body, an outer surface of a portion of the extension portion close to the cover body is connected to the main case body, and an end of the extension portion away from the cover body is sleeved on an inner side of the reservoir case body; or one end of the extension part, which is far away from the cover body, is sleeved on the outer side of the liquid storage device shell. Optionally, a terminal box is arranged on the side wall of the main shell and used for communicating the compressor body with an external power supply.

In addition, to achieve the above object, the present invention provides a refrigerating apparatus including the compressor as described above.

Compared with the prior art, the upper shell cover assembly of the compressor, the compressor and the refrigeration equipment have the following advantages:

the upper shell cover assembly of the compressor comprises the upper shell cover and the liquid storage device positioned at the top of the upper shell cover, and the upper shell cover assembly is arranged at the upper end of the compressor, so that the problem that the overall structure of the compressor is unbalanced due to gravity center offset is effectively solved, the structural reliability of the compressor can be improved, and meanwhile, the required installation space of the compressor is reduced.

Drawings

Fig. 1 is a schematic structural view of a rolling rotor type compressor in the prior art;

FIG. 2 is a schematic structural view of a cover assembly according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a compressor body according to a first embodiment of the present invention;

FIG. 4 is a schematic view of the compressor assembly shown in FIG. 2 in combination with the compressor body shown in FIG. 3;

FIG. 5 is a schematic structural view of a cover assembly according to a second embodiment of the present invention;

FIG. 6 is a schematic view of the compressor with the upper housing cover assembly of FIG. 5 coupled to the compressor body;

FIG. 7 is a schematic view of a modified construction of the upper housing cover assembly shown in FIG. 5;

FIG. 8 is a schematic view of the compressor with the upper housing cover assembly of FIG. 7 coupled to the compressor body;

FIG. 9 is a schematic view of an alternative construction of the upper housing cover assembly shown in FIG. 5;

FIG. 10 is a schematic view of the compressor with the upper housing cover assembly of FIG. 9 coupled to the compressor body;

fig. 11 is a schematic structural view of a dual cylinder compressor according to an embodiment of the present invention.

In the figure:

100-an upper housing cover assembly;

110-upper shell cover;

111-cover, 112-extension;

10, 120-a reservoir;

11, 122-inlet pipe;

121-reservoir shell, 123-filtering mechanism, 124-internal connecting pipe and 125-oil return pipe;

20, 200-compressor body;

210-a main housing;

211-junction box, 212-exhaust pipe;

220-compressor motor;

221-motor stator, 222-motor rotor, 223-crankshaft, 224-rolling piston;

230-compressor pump body;

30, 300-outer connecting tube;

310-main pipe, 320-branch pipe.

Detailed Description

To make the objects, advantages and features of the present invention more apparent, the upper shell cover assembly of the compressor, the compressor and the refrigeration equipment according to the present invention will be further described in detail with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The same or similar reference numbers in the drawings identify the same or similar elements.

The invention provides an upper shell cover assembly of a compressor, which comprises an upper shell cover and a liquid storage device arranged at the top of the upper shell cover. According to the invention, the liquid storage device is arranged at the top of the upper shell cover, so that the problem of unbalanced integral structure of the compressor due to gravity center offset is effectively solved, the reliability of the compressor structure is improved, and the installation space of the compressor is reduced. In the present invention, the compressor includes, but is not limited to, a rolling rotor type compressor.

The present invention provides a top cover assembly, and a compressor and a refrigeration device including the same, which are further described below with reference to the accompanying drawings.

Fig. 2 is a schematic structural diagram of a cover assembly according to a first embodiment of the present invention. As shown in fig. 2, a first embodiment of the present invention provides a housing cover assembly 100, which includes a housing cover 110 and a reservoir 120 disposed on top of the housing cover 110. The accumulator 120 includes an accumulator housing 121 for storing a refrigerant.

Fig. 4 is a schematic view showing a structure of a compressor using the upper cover assembly 100 according to the first embodiment. As shown in fig. 4, an embodiment of the present invention also provides a compressor including a compressor housing including a main housing 210 and an upper housing cover assembly 100. The compressor further includes a compressor body 200, the compressor body 200 includes the main housing 210, and the main housing 210 integrates a compressor motor 220, a compressor pump body 230, and the like. The upper housing cover assembly 100 is disposed on top of the main housing 210 to form a compressor housing together with the main housing 210. By disposing the upper housing cover assembly 100 on top of the main housing 210, that is, the liquid reservoir 120 is located on top of the compressor, this can improve the unbalance problem of the overall structure of the compressor, and at the same time, improve the structural reliability of the compressor and reduce the required installation space. Preferably, the accumulator 120 is coaxially disposed with the upper shell cover 110, so as to further improve the balance of the overall structure of the compressor. In the embodiment of the present invention, the liquid reservoir 120 has a long cylindrical structure, and is vertically disposed on the top of the compressor body 200, and is coaxially disposed.

Referring to fig. 4, the compressor of the present embodiment is vertically installed, such that the liquid storage device 120 and the compressor body 200 are vertically arranged, that is, the liquid storage device 120 is located above the compressor body 200. The compressor further includes an outer connection pipe 300, the outer connection pipe 300 is disposed outside the main housing 210, and one end of the outer connection pipe 300 is connected to the liquid storage device 120, and the other end of the outer connection pipe is connected to the compressor body 200, so that the liquid storage device 120 and the compressor body 200 are communicated with each other.

It should be noted that, in the compressor, the accumulator 120 is used for gas-liquid separation of the refrigerant, and provides the separated gaseous refrigerant to the compressor body 200, and stores the separated liquid refrigerant. Fig. 2 shows a schematic structural view of the upper case cover assembly 100 according to the first embodiment. As shown in fig. 2, the reservoir 120 includes a reservoir housing 121, and the reservoir housing 121 includes a top wall, a bottom wall, and a side wall connected to each other, thereby forming a closed inner space, and optionally, the reservoir housing 121 has a cylindrical structure. Wherein the bottom wall is attached to the top of the upper housing cover 110 by means including, but not limited to, welding. The accumulator housing 121 is provided with a first air intake port (not labeled in the figure) and a refrigerant outlet (not labeled in the figure), specifically, the first air intake port may be opened on the top wall, and an air intake pipe 122 extending to the outside of the accumulator housing 121 is further disposed at the first air intake port, and the refrigerant outlet is disposed on a side wall of the accumulator housing 121.

Further, the reservoir 120 further includes a filter mechanism 123 and an inner connection pipe 124 disposed in the reservoir housing 121. The filter mechanism 123 divides the inner space of the accumulator case 121 into an upper space and a lower space, wherein the upper space communicates with the suction pipe 122. The inner connection pipe 124 is disposed in the lower space, and is used to connect the upper space to the outside through the refrigerant outlet, that is, the gaseous refrigerant in the upper space can be led out through the inner connection pipe 124.

In practical applications, the suction pipe 122 is used for sucking a refrigerant, the refrigerant may be a mixed refrigerant of a gaseous refrigerant and a liquid refrigerant, and the mixed refrigerant may further include engine oil. The refrigerant outlet is communicated with the compressor body 200 through the outer connection pipe 300, so that the compressor body 200 is communicated with the upper space of the accumulator 120. When the compressor is operated, the accumulator 120 receives a refrigerant with oil and performs gas-liquid separation, wherein the separated gas-phase refrigerant is stored in the upper space and is provided to the compressor body 200 through the inner connecting pipe 124 and the outer connecting pipe 300, and the separated liquid-phase refrigerant and the liquid-phase oil are stored in the lower space of the accumulator 120. It should be understood that the gas-liquid separation process of the refrigerant by the accumulator 120 is well known in the art and will not be described in detail herein.

An oil return pipe 125 is further disposed on the inner connection pipe 124, and specifically, the oil return pipe may be a siphon oil return pipe. The oil return pipe 125 is used to communicate the lower space with the inner connection pipe 124, so as to return the liquid engine oil in the lower space to the inner connection pipe 124 and further provide the liquid engine oil from the inner connection pipe 124 to the compressor body 200. The inner diameter of the oil return pipe 125 can be 1mm-3mm according to actual needs. Of course, the inner connecting pipe 124 may not be provided with an oil return pipe, and only an oil return hole may be provided at the lower side thereof to achieve the same purpose.

Further, a heat insulation pad (not shown) is disposed between the bottom wall of the accumulator 120 and the upper housing cover 110 to reduce the temperature influence between the accumulator 120 and the compressor body 200.

Fig. 3 shows a schematic structural view of the compressor body 200 in the first embodiment. As shown in fig. 3, the compressor body 200 includes a main housing 210, a compressor motor 220, and a compressor pump body 230, the main housing 210 may be a long cylindrical housing and forms an internal space, and specifically, the main housing 210 may be formed in a cylindrical structure with an open upper end, and the upper housing cover assembly 100 is disposed at the open upper end of the main housing 210 to close the main housing 210. However, the main housing 210 and the upper housing cover 110 may be of an integral structure, or the main housing 210 and the upper housing cover assembly 100 may be separately manufactured and then connected by welding.

A junction box 211 and an exhaust pipe 212 may be further disposed on an outer sidewall of the main housing 210, and the junction box 211 is used to communicate the compressor body 200 with an external power source. The discharge pipe 240 is used to discharge the refrigerant compressed in the compressor pump body 230 of the compressor body 200. As an example, the discharge pipe 240 may be horizontally disposed and located at a side of the compressor housing.

The compressor motor 220 and the compressor pump body 230 are both disposed in the main housing 210. The compressor motor 220 includes a motor stator 221, a motor rotor 222, a crank shaft 223, and a rolling piston 224, and the motor stator 221 generates a magnetic force by an applied power. The motor rotor 222 is disposed inside the motor stator 221 and rotates, and the motor stator 221 and the motor rotor 222 may be understood as components of the compressor motor 120. The crankshaft 223 is connected to the motor rotor 222 and rotates with the rotation of the motor rotor 222. Rolling piston 224 is eccentrically coupled to a lower portion of crankshaft 223 (i.e., rolling piston 224 is eccentrically coupled to a lower end of crankshaft 223 near the main housing), and rotates with a fixed eccentric locus according to the rotation of crankshaft 223.

The compressor pump body 230 may form a suction portion for introducing a refrigerant and a compression portion for compressing the refrigerant sucked by the suction portion. The suction part may be connected to the accumulator 120 to receive the refrigerant provided by the accumulator 120. Therefore, a second suction port is provided at a position corresponding to the suction portion of the main housing 210, and the second suction port is communicated with the refrigerant outlet through the outer connection pipe 300.

The compressor body 200 may further include a vane (not shown) disposed in the main housing, which reciprocates in a groove formed in the compressor pump body 230 as the rolling piston 224 rotates while dividing the compressor cylinder into a suction chamber and a compression chamber, a discharge portion (not shown), a main bearing (not shown), and an auxiliary bearing (not shown). The discharge portion is used to discharge the refrigerant compressed in the compression portion of the compressor pump body 230. When the pressure in the compression chamber of the compressor pump body 230 is equal to or higher than the discharge pressure, the discharge portion forms a passage for discharging the refrigerant compressed in the compression chamber. A discharge valve (not shown) for controlling discharge of the compressed refrigerant may be provided at one side of the discharge portion.

The operation of the compressor is described below by taking the above-mentioned compressor as an example.

When the crankshaft 223 rotates, the rolling piston 224 rotates and revolves along the inner circumferential surface of the compressor pump body 230 while making a fixed eccentric locus. The refrigerant stored in the accumulator 120 flows into the compression chamber of the compressor body 230 through the outer connection pipe 300, and is compressed in the compression chamber while the compressor body 230 rotates.

When the pressure in the compression chamber is equal to or higher than the discharge pressure, a discharge valve provided on the discharge portion side is opened, and the compressed refrigerant is discharged from the discharge portion through the opened discharge valve. And, the discharged compressed refrigerant repeats the following processes: is discharged to a refrigeration cycle apparatus (not shown) through the discharge pipe 112, undergoes a heat exchange cycle, and is sucked into the compression chamber of the compressor pump body 230 again through the accumulator 120.

In addition, in this embodiment, the compressor may be a single-cylinder compressor, a double-cylinder compressor, or a multi-cylinder compressor. Fig. 11 shows a schematic structural view of a twin cylinder compressor in which two suction parts are formed as shown in fig. 11, and the outer connection pipe 300 includes a main pipe 310 and two branch pipes 320, and the two branch pipes 320 are respectively used to communicate the two suction parts with the main pipe 310. For a multi-cylinder compressor, the number of branch pipes 320 should be adapted to the number of cylinders of the compressor.

Next, other alternative configurations of the upper housing cover assembly 100 will be described.

Fig. 5 shows a structural schematic view of an upper case cover assembly 100 provided in a second embodiment, which is different from the first embodiment in that the lower end of the accumulator housing 121 of the accumulator 120 is formed with an opening, and the upper case cover 110 is connected to the lower end of the accumulator housing 121 and serves to close the lower end of the accumulator housing 121, that is, the upper case cover 110 simultaneously closes the lower portion of the accumulator housing 121 and the upper portion of the compressor housing 210.

Specifically, the upper housing cover 110 includes a cover body 111 and an extension portion 112. As shown in fig. 5 and 6, the extension part 112 extends downward from the edge of the cover 111. The upper housing cover 110 is sleeved on the lower end of the reservoir 120, and the inner sidewall of the reservoir 120 is connected to the outer surface of the extension portion 112 of the upper housing cover 110. Meanwhile, the upper housing cover 110 is further sleeved in the main housing 210, and an outer surface of the extension portion 112 is connected with an inner surface of the main housing 210.

Fig. 7 shows a modified structure of the second embodiment. Referring to fig. 7 in conjunction with fig. 8, the inner diameter of the end of the extension portion 112 away from the cover 111 is equal to the outer diameter of the upper end of the main housing 210, so that the upper housing cover 110 is sleeved on the outer side of the upper portion of the main housing 210.

Fig. 9 shows another modified structure of the second embodiment. Referring to fig. 9 in combination with fig. 10, the upper housing cover 110 includes a cover 111 and an extending portion 112, and the extending portion 112 extends upward from an edge of the cover 111. One end of the extension portion 112, which is far away from the cover 111, is sleeved inside the reservoir housing 121, and an outer surface of the extension portion 112, which is close to the cover 111, is connected to an inner surface of the main housing 210. Of course, an end of the extending portion away from the cover may also be sleeved outside the reservoir housing (not shown), in this embodiment, the extending portion 112 extends upward along the edge of the cover 111 and is connected to the reservoir housing 121 to expand the volume of the reservoir 120.

Further, the embodiment of the invention also provides refrigeration equipment, which comprises the compressor, and the refrigeration equipment can be a refrigeration device such as an air conditioner or a refrigerator.

In conclusion, the liquid storage device and the upper shell cover are combined into a whole, so that the liquid storage device can be arranged on the top of the compressor body along with the upper shell cover, and on one hand, the stability of the whole structure of the compressor can be improved, the noise is reduced, and the installation space is reduced; on the other hand, the compressor body has enough strength and rigidity, and is arranged below the liquid storage device, so that the structural stability of the whole machine is ensured, the structure of the compressor body is not required to be greatly changed, and the cost is not increased; on the other hand, set up the reservoir in the top of compressor body, can not cause the influence to the inside temperature of compressor body especially near the compressor pump body, thereby avoid this internal lubricating oil of compressor to dilute even fluid separation, the upper portion of compressor body sets up the gas vent simultaneously, a high temperature gaseous state refrigerant for discharge pump body exhaust, high temperature gaseous state refrigerant can heat the reservoir bottom through the heat-conduction of conch wall, accelerate the gasification of liquid refrigerant in the reservoir, improve the quality of breathing in and reduce the risk that the liquid hits of breathing in, consequently, the volume of reservoir also can further be reduced.

Although the present invention is disclosed above, it is not limited thereto. Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An upper shell cover assembly of a compressor is characterized by comprising an upper shell cover and a liquid storage device arranged at the top of the upper shell cover.

2. An upper housing cover assembly of a compressor, according to claim 1, wherein said accumulator is disposed coaxially with said upper housing cover.

3. A top housing cover assembly for a compressor according to claim 1 or claim 2 wherein said accumulator includes an accumulator housing having a bottom wall, said bottom wall being connected to a top portion of said top housing cover.

4. An upper housing cover assembly for a compressor according to claim 3, wherein an insulating thermal pad is provided between the bottom wall and a top of the upper housing cover.

5. An upper shell cover assembly of a compressor according to claim 1 or 2, wherein the accumulator comprises an accumulator housing, the lower end of the accumulator housing forms an opening, and the top of the upper shell cover is connected with the lower end of the accumulator housing and closes the opening.

6. An upper shell cover assembly of a compressor according to claim 1 or 2, wherein the accumulator comprises an accumulator shell and an inner connection pipe; the liquid accumulator shell is provided with an upper space and a lower space, the upper space is used for storing a gaseous refrigerant, and the lower space is used for storing a liquid refrigerant and liquid engine oil; the inner connecting pipe is arranged in the lower space, one end of the inner connecting pipe is communicated with the upper space, and the other end of the inner connecting pipe is used for leading out gaseous refrigerants;

7. An upper housing cover assembly of a compressor according to claim 6 wherein said oil return tube is a siphonic oil return tube.

8. A compressor comprising a compressor housing including a main housing and an upper housing cover assembly as claimed in any one of claims 1 to 7; wherein, the upper shell cover assembly is arranged on the top of the main shell.

9. The compressor of claim 8, wherein the upper housing cover includes a cover body and an extension portion, the extension portion extends downward from an edge of the cover body, an outer surface of a portion of the extension portion close to the cover body is connected to the accumulator housing, and an end of the extension portion away from the cover body is sleeved inside the main housing; or one end of the extension part, which is far away from the cover body, is sleeved on the outer side of the main shell body.

10. The compressor of claim 8, wherein the upper shell cover comprises a cover body and an extension portion, the extension portion extends upward from an edge of the cover body, an outer surface of a portion of the extension portion close to the cover body is connected with the main shell, and an end of the extension portion away from the cover body is sleeved on the inner side of the accumulator shell; or one end of the extension part, which is far away from the cover body, is sleeved on the outer side of the liquid storage device shell.

11. The compressor of claim 8, wherein a terminal box is provided on an outer side wall of the main housing, the terminal box being used for connecting an external power supply.

12. A refrigeration device, characterized by comprising a compressor according to any one of claims 8-11.