WO2018076691A1

WO2018076691A1 - Reservoir and compressor assembly having same

Info

Publication number: WO2018076691A1
Application number: PCT/CN2017/086704
Authority: WO
Inventors: 吴嘉晖; 宋鹏杰; 谭琴
Original assignee: 广东美芝制冷设备有限公司
Priority date: 2016-10-31
Filing date: 2017-05-31
Publication date: 2018-05-03
Also published as: CN206207818U

Abstract

A reservoir (100) and a compressor assembly having the same, the reservoir (100) comprising: a housing (1), a chamber (11) being defined in the housing (1); an air inlet pipe (2), the air inlet pipe (2) being provided on the housing (1) and connected to the chamber (11); at least two air outlet pipes (3), the at least two air outlet pipes (3) being provided on the housing (1); and at least one connecting pipe (4), the connecting pipe (4) connecting the at least two air outlet pipes (3).

Description

Reservoir and compressor assembly therewith

Technical field

This invention relates to the field of compressors, and more particularly to a reservoir and a compressor assembly therewith.

Background technique

In the related art, the outlet pipe of the accumulator is a single straight pipe structure, and the refrigerant gas inside the accumulator is discharged into the compressor through the outlet pipe, thereby completing the compression process in the compressor. However, in the process of inhaling the compressor through the above-mentioned accumulator, the refrigerant gas must pass through the long straight pipe section of the gas outlet pipe and enter the cylinder. When the rotation speed of the compressor increases, the resistance loss of the refrigerant along with the refrigerant The flow rate is sharply deteriorated, so that the volumetric efficiency of the compressor is also drastically lowered.

Summary of the invention

The present invention is based on the discovery by the inventors of the fact that in the prior art, in the course of operation of the compressor, there is often a problem that the refrigeration capacity is low and the intake amount is insufficient. Therefore, the inventors of the present invention have started from the structure of the accumulator in particular, and have found through research that the structure of the outlet pipe of the existing accumulator is a single straight pipe structure, so that the refrigerant gas inside the accumulator must be After entering the cylinder of the compressor through a long straight pipe section, the suction amount of the compressor is reduced due to the resistance loss along the path and the expansion of the clearance.

The present invention is directed to solving one of the technical problems existing in the prior art. To this end, it is an object of the present invention to provide an accumulator which has a low resistance to refrigerant.

Another object of the present invention is to provide a compressor assembly having the above described reservoir.

An accumulator according to a first aspect of the present invention, comprising: a housing defining a chamber therein; an intake duct, the intake duct being disposed on the housing and communicating with the chamber; at least two An air outlet pipe, at least two of the air outlet pipes are disposed on the casing; at least one communication pipe, the communication pipe is connected to at least two of the air outlet pipes.

According to the accumulator of the present invention, at least two outlet pipes are connected through the communication pipe, thereby increasing the cross-sectional area of the refrigerant gas flow, reducing the flow rate of the refrigerant gas, thereby reducing the refrigerant gas in the gas outlet pipe. Resistance reduces the resistance loss of the refrigerant along the path.

In addition, the accumulator according to the invention may also have the following additional technical features:

According to an embodiment of the present invention, the communication tube and the at least two of the air outlet tubes are both round tubes, the diameter of the communication tube is D ₁ , and the at least two of the outlet tubes have the smallest diameter The diameter of the outlet pipe is D ₂ , wherein the D ₁ and D ₂ satisfy: D ₁ ≥ 0.2 × D ₂ .

According to an embodiment of the present invention, the communication tube and the at least two outlet tubes are both round tubes, the diameter of the communication tube is D ₁ , and the diameter of at least two of the at least one of the outlet tubes Is D ₃ , wherein the D ₁ , D ₃ satisfy: D ₁ = D ₃ .

According to an embodiment of the invention, the communication tube is disposed horizontally or obliquely from top to bottom.

According to an embodiment of the present invention, when the communication pipe is horizontally disposed, the communication pipe is a straight pipe, or the communication pipe is a bent pipe extending in a horizontal plane; when the communication pipe is inclined from top to bottom When disposed, the angle between the communicating tube and the horizontal plane is α, wherein the α satisfies: α≤75°.

According to an embodiment of the invention, the plurality of communication tubes are plural, and the plurality of the communication tubes are spaced apart in the up and down direction.

According to an embodiment of the invention, the communication tube and the at least two of the air outlet tubes are integrally formed.

According to an embodiment of the invention, the cross-sectional shape of the communicating tube is circular, elliptical or polygonal.

According to an embodiment of the present invention, each of the air outlet tubes includes an inner tube section located in the chamber and an outer tube section connected to the inner tube section and located outside the chamber, the communication tube communicating with at least two of the The inner pipe section of the air outlet pipe, or the communication pipe communicates with the outer pipe section of at least two of the air outlet pipes.

A compressor assembly according to a second aspect of the present invention, comprising a multi-cylinder compressor comprising a plurality of cylinders; the accumulator according to the above first aspect of the invention, wherein the accumulator comprises a plurality of An air outlet pipe, wherein the plurality of air outlet pipes are respectively connected to the plurality of the air cylinders.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a longitudinal cross-sectional view of an accumulator according to an embodiment of the present invention;

Figure 2 is a transverse cross-sectional view of the accumulator according to an embodiment of the present invention;

Figure 3 is a transverse cross-sectional view of the accumulator according to a second embodiment of the present invention;

Figure 4 is a cross-sectional view of a liquid storage device in accordance with a third embodiment of the present invention;

Figure 5 is a cross-sectional view showing an accumulator according to a fourth embodiment of the present invention;

Figure 6 is a cross-sectional view of a liquid storage device in accordance with a fifth embodiment of the present invention;

Figure 7 is a cross-sectional view of an accumulator according to a sixth embodiment of the present invention;

Figure 8 is a cross-sectional view of a liquid storage device in accordance with a seventh embodiment of the present invention;

Figure 9 is a cross-sectional view of an accumulator according to an eighth embodiment of the present invention;

Figure 10 is an enlarged cross-sectional view of a communication pipe of the accumulator according to an embodiment of the present invention;

Figure 11 is an enlarged cross-sectional view showing a communication pipe of the accumulator according to another embodiment of the present invention;

Figure 12 is an enlarged cross-sectional view showing a communication pipe of the accumulator according to still another embodiment of the present invention;

Figure 13 is a cross-sectional view of an accumulator according to a ninth embodiment of the present invention;

Figure 14 is a cross-sectional view showing an accumulator according to a tenth embodiment of the present invention;

Figure 15 is a cross-sectional view of an accumulator in accordance with an embodiment of the present invention.

Reference mark:

100: a liquid storage device;

1: housing; 11: chamber; 2: intake pipe;

3: outlet pipe; 31: inner pipe section; 32: outer pipe section;

4: communication tube; 5: filter assembly.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Out, Clockwise, Counterclockwise, Axial The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or The elements must have a particular orientation, are constructed and operated in a particular orientation and are therefore not to be construed as limiting. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, "a plurality" means two or more unless otherwise stated.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. It can be specific to those skilled in the art The circumstances understand the specific meaning of the above terms in the present invention.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly above and above the second feature, or merely the first feature level being less than the second feature.

An accumulator 100 according to an embodiment of the first aspect of the present invention will now be described with reference to Figs. The accumulator 100 is an important component of the compressor assembly and functions as a storage, gas-liquid separation, filtration, muffling and buffering of refrigerant. Here, it should be noted that the accumulator 100 according to an embodiment of the present invention may be adapted to be compatible with any form of compressor (not shown), such as a piston compressor, a rotary compressor, or the like.

As shown in FIGS. 1 to 15, an accumulator 100 according to an embodiment of the first aspect of the present invention includes a housing 1, an intake pipe 2, at least two outlet pipes 3, and at least one communication pipe 4.

A chamber 11 is defined in the housing 1, and an intake pipe 2 is provided on the housing 1, and the intake pipe 2 is in communication with the chamber 11. At least two outlet pipes 3 are provided on the casing 1, and the communication pipe 4 communicates with at least two outlet pipes 3.

For example, as shown in FIGS. 1 to 15, the intake pipe 2 may be provided at the top of the casing 1, and the refrigerant outside the accumulator 100 (which may include a gaseous refrigerant and a liquid refrigerant) may flow to the reservoir through the intake pipe 2. The chamber 11 of the liquid 100 is inside. At least two outlet pipes 3 may be disposed at the bottom of the casing 1, and each of the outlet pipes 3 penetrates upward from the bottom of the casing 1 into the chamber 11 and communicates with the chamber 11, and the communication pipe 4 communicates with at least two The outlet pipe 3, the gaseous refrigerant flowing into the refrigerant in the chamber 11 of the accumulator 100 flows into the compressor downstream of the accumulator 100 through the outlet pipe 3, because at least two of the outlet pipes 3 pass through the communication pipe 4 is connected, so that the gaseous refrigerant can flow into the other outlet pipes 3 communicating with the outlet pipe 3 along the communication pipe 4 during the flow through the outlet pipe 3, and finally the gaseous refrigerant (ie, refrigerant gas) can pass. The plurality of air outlet pipes 3 that are connected by the communication pipe 4 flow into the compressor for compression. Thereby, the refrigerant gas discharged from one outlet pipe 3 can be discharged together through at least two outlet pipes 3 communicating with the communication pipe 4, increasing the cross-sectional area of the flow of the refrigerant gas, thereby reducing the refrigerant gas in the gas outlet pipe 3 The flow rate inside, and because the pipe resistance of the gas is proportional to the square of the gas flow rate, thereby reducing the resistance of the refrigerant gas in the gas outlet pipe 3, reducing the resistance loss of the refrigerant gas in the gas outlet pipe 3, when storing When the liquid 100 is applied to a compressor, the volumetric efficiency of the compressor can be improved. Here, it should be noted that "downstream" can be understood as downstream of the flow direction of the refrigerant. It can be understood that the position of the intake pipe 2 and the air outlet pipe 3 on the casing 1 can be set according to actual requirements to better meet practical applications.

The accumulator 100 according to the embodiment of the present invention is connected to the at least two outlet pipes 3 through the communication pipe 4, thereby increasing The cross-sectional area of the refrigerant gas flow reduces the flow rate of the refrigerant gas in the gas outlet pipe 3, thereby reducing the resistance of the refrigerant gas in the gas outlet pipe 3.

In an embodiment of the present invention, the communication pipe 4 and the at least two air outlet pipes 3 are both circular pipes, the pipe diameter of the communication pipe 4 is D ₁ , and the pipe of the air outlet pipe 3 having the smallest pipe diameter among the at least two air outlet pipes 3 The diameter is D ₂ , wherein D ₁ and D ₂ satisfy: D ₁ ≥ 0.2 × D ₂ . Here, it should be noted that "at least two air outlet pipes 3" can be understood as a plurality of air outlet pipes 3 that communicate through the communication pipe 4. When the diameters of the at least two outlet pipes 3 are not equal, the pipe diameter D ₂ is the one with the smallest diameter of the at least two outlet pipes 3; when the diameters of the at least two outlet pipes 3 are equal, the pipe diameter D ₂ is the diameter of any of the at least two outlet pipes 3. Thus, by making the pipe diameters D ₁ and D _{2 of} the communication pipe 4 and the gas outlet pipe 3 satisfy the above relationship, the cross-sectional area of the refrigerant gas flow can be further increased, the flow rate of the refrigerant gas can be lowered, and the communication pipe 4 is The pipe diameter can be set relatively large, so that the flow rate of the refrigerant gas therein can be further reduced, thereby further reducing the resistance of the refrigerant gas in the gas outlet pipe 3, further reducing the refrigerant gas in the gas outlet pipe 3. Loss of resistance along the way. Here, the "pipe diameter" means the inner diameter of the communication pipe 4 and the air outlet pipe 3.

Optionally, the communication tube 4 and the at least two air outlet tubes 3 are all round tubes, the diameter of the communication tube 4 is D ₁ , and the diameter of at least one of the at least two air outlet tubes 3 is D ₃ , wherein D ₁ , D _{3 is} satisfied: D ₁ = D ₃ . Thus, by making the pipe diameter D _{1 of} the communication pipe 4 equal to the pipe diameter D _{3 of} at least one of the gas outlet pipes 3, the connection between the communication pipe 4 and the gas outlet pipe 3 is facilitated, and the cross section of the refrigerant gas flow is maintained. The consistency of the area, the refrigerant gas flow is more stable.

Alternatively, the communication tube 4 is disposed horizontally or obliquely from top to bottom. For example, as shown in FIG. 1, FIG. 8, FIG. 9, and FIG. 13, the connection between the both ends of the communication pipe 4 and the two air outlet pipes 3 is at the same height in the up and down direction, whereby the processing is simple and the cost is low. In the example of FIG. 4 to FIG. 6 , the connection between the two ends of the communication pipe 4 and the two air outlet pipes 3 is at different heights in the up and down direction, that is, there is a certain drop in the up and down direction, and at this time, the extension of the communication pipe 4 The direction is inclined with respect to the horizontal direction. It can be understood that the arrangement of the communication tubes 4 can be set according to actual requirements to better meet practical applications.

In a specific embodiment of the present invention, when the communication pipe 4 is horizontally disposed, the communication pipe 4 may be a straight pipe, or the communication pipe 4 is a bent pipe that is bent and extended in a horizontal plane. For example, as shown in FIG. 1 to FIG. 3, the connection between the two ends of the communication pipe 4 and the two air outlet pipes 3 is at the same height in the up and down direction, and the communication pipe 4 may be a straight pipe or a curved pipe (for example, in FIG. 3). Curved tube, S-shaped tube (not shown), etc.). Similarly, when the communication tube 4 is disposed obliquely from top to bottom, as shown in FIGS. 4-6, the communication tube 4 may be a straight tube, or the communication tube 4 may be a curved bend extending in a horizontal plane and/or a vertical plane. tube.

Further, when the communication pipe 4 is disposed obliquely from top to bottom, the angle between the communication pipe 4 and the horizontal plane is α, where α satisfies: α ≤ 75°. For example, as shown in FIG. 4-6, the connection between the communication pipe 4 and the two air outlet pipes 3 is at different heights in the up and down direction. At this time, the angle between the longitudinal direction of the communication pipe 4 and the horizontal plane satisfies α. ≤ 75°, whereby the length of the communication tube 4 is short, thereby saving material and reducing cost.

Alternatively, the number of the communication tubes 4 is plural, and the plurality of communication tubes 4 are spaced apart in the up and down direction. For example, in the example of Fig. 7, two communication pipes 4 are shown, which are connected to the two outlet pipes 3, and the two communication pipes 4 can be horizontally disposed. Thereby, the cross-sectional area of the refrigerant gas flow is also increased, and the resistance loss of the refrigerant gas in the gas outlet pipe 3 is reduced. Of course, the plurality of communication tubes 4 may also be disposed at an oblique interval in the up and down direction.

As shown in FIG. 8, the communication pipe 4 and the at least two air outlet pipes 3 are integrally formed, and at this time, the communication pipe 4 and the at least two air outlet pipes 3 are integrally manufactured. Thereby, the molding efficiency of the communication pipe 4 and the air outlet pipe 3 is improved. Of course, as shown in FIG. 9, the communication tube 4 and the at least two air outlet tubes 3 can also be separately formed and then integrally joined by welding or the like.

Alternatively, as shown in FIGS. 10 to 12, the cross-sectional shape of the communication tube 4 is a circle, an ellipse or a polygon such as a rectangle or the like. It can be understood that the cross-sectional shape of the connecting pipe 4 can be set according to actual requirements to better meet the actual requirements.

In a specific embodiment of the invention, each of the air outlet tubes 3 includes an inner tube section 31 located in the chamber 11 and an outer tube section 32 connected to the inner tube section 31 and located outside the chamber 11, the communication tube 4 being connected to at least two out The inner tube section 31 of the gas pipe 3, or the communication tube 4, communicates with the outer tube section 32 of at least two outlet pipes 3. Thereby, regardless of whether the communication pipe 4 communicates with the inner pipe section 31 of the at least two air outlet pipes 3 or the outer pipe section 32 of the at least two air outlet pipes 3, the cross-sectional area of the refrigerant gas flow is increased, and the refrigerant gas is lowered. The flow rate in the outlet pipe 3 further reduces the resistance loss of the refrigerant gas in the outlet pipe 3. For example, as shown in FIGS. 1 and 4 to 9, the communication pipe 4 is located in the chamber 11, and the communication pipe 4 communicates with the inner pipe sections 31 of the two outlet pipes 3. As shown in FIG. 13 and FIG. 14, the communication pipe 4 is located outside the chamber 11, and the communication pipe 4 communicates with the outer pipe sections 32 of the two air outlet pipes 3. At this time, the communication pipe 4 may be disposed at the lower portion of the casing 1, and the communication pipe 4 can be placed next to the housing 1 (as shown in Figure 13); of course, the communication tube 4 can also be remote from the housing 1 and close to the compressor arrangement connected to the outlet pipe 3 (as shown in Figure 14).

Of course, the present invention is not limited thereto, and the communication pipe 4 may also communicate with the inner pipe section 31 and the outer pipe section 32 (not shown) of the at least two air outlet pipes 3. That is, one end of the communication pipe 4 is connected to the inner pipe section 31 of one of the air outlet pipes 3, and the other end of the communication pipe 4 is connected to the outer pipe section 32 of the other air outlet pipe 3, at which time the communication pipe 4 passes through the casing. It can be understood that the connecting pipe 4 can also be provided as a multi-end communicating connecting member to connect three or more air outlet pipes 3, thereby also increasing the cross-sectional area of the refrigerant gas flow and reducing the cooling. The purpose of the flow rate of the agent gas in the gas outlet pipe 3 is to reduce the resistance loss of the refrigerant gas in the gas outlet pipe 3.

Further, as shown in FIG. 15, a filter assembly 5 is disposed in the chamber 11, between the outlet of the intake pipe 2 and the inlet of the air outlet pipe 3, and the filter assembly 5 can filter out insoluble components in the refrigerant, etc. The insoluble components are prevented from being damaged by the refrigerant flowing into the compressor through the gas outlet pipe 3, thereby ensuring the reliability of the compressor.

A compressor assembly according to an embodiment of the second aspect of the present invention includes a multi-cylinder compressor and an accumulator 100 according to the above-described first aspect of the present invention.

The multi-cylinder compressor includes a plurality of cylinders, and the accumulator 100 includes a plurality of outlet pipes 3, and the plurality of outlet pipes 3 are respectively connected to a plurality of cylinders. The air outlet pipe 3 can be connected to the cylinders one by one, and the number of the air outlet pipes 3 is the same as the number of the cylinders.

According to the compressor assembly of the embodiment of the present invention, by using the above-described accumulator 100, during the operation of the multi-cylinder compressor, when the volume of the compression chamber of one of the cylinders reaches a maximum, the intake amount of the cylinder is maximized. At this time, the cylinder can simultaneously inhale from the plurality of air outlet pipes 3 through the communication pipe 4, thereby increasing the effective air intake amount of the cylinder, and reducing the refrigeration due to the small resistance of the refrigerant gas in the air outlet pipe 3, thereby reducing the refrigeration. The suction gas flowing into the compression chamber through the gas outlet pipe 3 improves the energy consumption of the compressor, and at the same time reduces the resistance loss of the refrigerant gas in the gas outlet pipe 3, thereby improving the volumetric efficiency of the compressor and improving the volumetric efficiency of the compressor. The refrigeration capacity of the compressor.

Other configurations and operations of compressor assemblies in accordance with embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A liquid storage device, comprising:

a housing defining a chamber therein;

An intake pipe, the intake pipe being disposed on the casing and communicating with the chamber;

At least two outlet pipes, at least two of which are disposed on the casing;

At least one communication tube that communicates with at least two of the outlet tubes.
The accumulator according to claim 1, wherein the communication tube and the at least two outlet tubes are both circular tubes, the diameter of the communication tube is D 1 , and at least two of the outlet tubes The diameter of the outlet pipe having the smallest diameter of the middle pipe is D 2 , wherein the D 1 and D 2 satisfy: D 1 ≥ 0.2 × D 2 .
The accumulator according to claim 1 or 2, wherein the communication pipe and the at least two of the gas outlet pipes are both round pipes, and the pipe diameter of the communication pipe is D 1 , at least two of The diameter of at least one of the outlet pipes is D 3 , wherein the D 1 , D 3 satisfy: D 1 = D 3 .
The accumulator according to any one of claims 1 to 3, wherein the communication tube is disposed horizontally or obliquely from top to bottom.
The accumulator according to claim 4, wherein when said communication tube is horizontally disposed,

The communication tube is a straight tube, or the communication tube is an elbow extending in a horizontal plane; when the communication tube is inclined from top to bottom, the angle between the communication tube and the horizontal plane is α, Wherein the α satisfies: α ≤ 75°.
The accumulator according to any one of claims 1 to 5, wherein the plurality of communication tubes are plural, and a plurality of the communication tubes are spaced apart in the up and down direction.
The accumulator according to any one of claims 1 to 6, wherein the communication tube and at least two of the outlet tubes are integrally formed.
The accumulator according to any one of claims 1 to 4, wherein the cross-sectional shape of the communicating tube is circular, elliptical or polygonal.
The accumulator according to any one of claims 1 to 8, wherein each of the outlet pipes comprises an inner pipe section located in the chamber and is connected to the inner pipe section and located outside the cavity The outer tube section, the communication tube communicates with the inner tube section of at least two of the outlet tubes, or the communication tube communicates with the outer tube section of at least two of the outlet tubes.
A compressor assembly, comprising:

a multi-cylinder compressor comprising a plurality of cylinders;

The accumulator according to any one of claims 1 to 9, wherein the accumulator comprises a plurality of the outlet pipes, and the plurality of outlet pipes are respectively connected to a plurality of the cylinders.