CN219014703U - Refrigerant distributor, refrigerant pipeline connection structure and temperature adjusting equipment - Google Patents

Abstract

The utility model discloses a refrigerant distributor, a refrigerant pipeline connecting structure and temperature regulating equipment, which comprises the following components: the cylinder extends from the first end to the second end along the axial direction, the cylinder is provided with an axial through hole which penetrates through from the first end to the second end, the cylinder is provided with a plurality of refrigerant outlets, and the refrigerant outlets are distributed along the circumferential direction of the cylinder; the end cover comprises a first end cover and a second end cover, the first end cover is in sealing connection with the first end of the cylinder body, the second end cover is in sealing connection with the second end of the cylinder body, an axial through hole of the cylinder body is used for defining a refrigerant distribution inner cavity between the first end cover and the second end cover, and an interface is arranged on the first end cover; the buffer tube is connected to the interface, and the buffer tube axially extends into the refrigerant distribution inner cavity through the interface, and is cut off before extending to the second end cover to form an inner pipe orifice, and an annular channel for communicating the buffer tube with a refrigerant outlet is defined between the buffer tube and the inner wall of the cylinder. The refrigerant distribution can be more uniform, and the fluid state is more stable.

Description

Refrigerant distributor, refrigerant pipeline connection structure and temperature adjusting equipment

Technical Field

The utility model is used in the field of air source heat pumps, and particularly relates to a refrigerant distributor, a refrigerant pipeline connection structure and temperature regulating equipment.

Background

Each cycle of the air source heat pump unit is generally provided with a plurality of air side heat exchangers, and the air source heat pump unit solves the problem that the refrigerant is uniformly distributed to the plurality of air side heat exchangers by arranging a refrigerant distributor. The result obtained by simulation of the common refrigerant distributor by using fluid simulation analysis software shows that the gas area is accumulated in the area right in front of the gas inlet, a relatively high-pressure area is formed, the pressure distribution of the whole distributor is uneven due to the pressure distribution difference, the fluid disturbance is large, the distribution uniformity and stability of the fluid are poor, and the system is easy to operate and has poor stability.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provide a refrigerant distributor, a refrigerant pipeline connecting structure and temperature regulating equipment, which can ensure that the refrigerant distribution is more uniform and the fluid state is more stable.

The technical scheme adopted for solving the technical problems is as follows:

in a first aspect, a refrigerant distributor includes:

the cylinder body extends from a first end to a second end along the axial direction, the cylinder body is provided with an axial through hole which penetrates through the first end to the second end, the cylinder body is provided with a plurality of refrigerant outlets, and the refrigerant outlets are distributed along the circumferential direction of the cylinder body;

the end cover comprises a first end cover and a second end cover, the first end cover is in sealing connection with the first end of the cylinder body, the second end cover is in sealing connection with the second end of the cylinder body, an axial through hole of the cylinder body is used for defining a refrigerant distribution inner cavity between the first end cover and the second end cover, and an interface is arranged on the first end cover;

the buffer tube is connected to the interface, the buffer tube axially extends into the refrigerant distribution inner cavity from the interface, the buffer tube is cut off before extending to the second end cover to form an inner pipe orifice, and an annular channel for communicating the buffer tube with the refrigerant outlet is defined between the buffer tube and the inner wall of the cylinder.

With reference to the first aspect, in certain implementations of the first aspect, the cross-section of the barrel is circular, the cross-section of the buffer tube is circular, the axis of the barrel coincides with the axis of the buffer tube, and the outer diameter of the buffer tube is smaller than the inner diameter of the barrel.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the buffer tube extends outward from the interface to form an external orifice protruding from the first end cover.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, an axial position of the refrigerant outlet is staggered from an axial position of the inner nozzle, and the axial position of the refrigerant outlet is located between the inner nozzle and the first end cover.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, an interface tube is disposed in the refrigerant outlet, and the interface tube extends in a radial direction and is connected with a cylinder wall of the cylinder in a sealing manner.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, the interface tube includes a necking section and a flaring section, an outer circumferential surface of the interface tube forms a stepped surface between the necking section and the flaring section, the necking section is inserted into the refrigerant outlet, and the stepped surface abuts against an outer wall surface of the cylinder.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a plurality of oil return holes are formed on the buffer tube, and the oil return holes extend to an inner side of the first end cover in a radial direction.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the first end cover has a first groove, the first groove is welded with the barrel after being clamped into the first end of the barrel, and the second end cover has a second groove, and the second groove is welded with the barrel after being clamped into the second end of the barrel.

A second aspect of a refrigerant line connection structure, including a refrigerant distributor according to any one of the first aspect and a plurality of heat exchangers connected to a plurality of the refrigerant outlets.

In a third aspect, a temperature adjusting device includes the refrigerant pipeline connection structure according to any implementation manner of the first aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the technical scheme, the refrigerant distributor is internally provided with the refrigerant distribution cavity through the cylinder body and the end cover, the buffer tube is arranged in the middle of the refrigerant distributor body and extends into the refrigerant distribution cavity and extends towards the second end cover, and the space of the refrigerant distribution cavity is divided into a folded refrigerant circulation path through the buffer tube. When the buffer tube is used, the refrigerant enters the refrigerant distribution inner cavity, the refrigerant cannot directly enter the refrigerant outlet, the refrigerant is required to be dispersed and folded around after overflowing from the inner tube orifice and enters the annular channel between the buffer tube and the inner wall of the cylinder, and finally is discharged through the plurality of refrigerant outlets, the whole process plays roles of buffering, dispersing and redistributing under the limiting action of the buffer tube, the second end cover and the cylinder, and the uniform distribution from the refrigerant entering from the buffer tube to each refrigerant outlet is realized. The technical scheme of the utility model has low added cost, but can lead the refrigerant distribution to be more uniform and the fluid state to be more stable. And using fluid simulation analysis software to simulate the results obtained by simulation. The simulation conditions were: at the distributor inlet, refrigerant gas flows in at a flow rate of 5.8m/s and flows out from the plurality of refrigerant outlets. The simulation result shows that the area right in front of the air inlet has no serious gas area to accumulate so as to form a relatively high-pressure area, and the distribution of the whole pressure is more uniform, so that the fluid stability is better, and the refrigerant flow of the outlet is basically uniform.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a front view of one embodiment of a refrigerant distributor of the present utility model;

FIG. 2 is a top view of the structure of one embodiment shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view at A-A of FIG. 2;

FIG. 4 is a schematic view of the concentric circular distribution of the barrel and buffer tube of one embodiment shown in FIG. 1.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Wherein, fig. 3 shows a reference direction coordinate system of an embodiment of the present utility model, and the embodiment of the present utility model is described below with reference to the directions shown in fig. 3.

The embodiment of the utility model provides a refrigerant distributor which is used for uniformly distributing refrigerant to a plurality of air side heat exchangers.

Referring to fig. 1, 2, 3 and 4, the refrigerant distributor includes a cylinder 100, an end cap and a buffer tube 200, wherein the cylinder 100 extends from a first end to a second end along an axial direction, that is, extends from a lower end to an upper end in fig. 3, the cylinder 100 has an axial through hole penetrating from the first end to the second end, a plurality of refrigerant outlets are disposed on the cylinder 100, for example, in the embodiment shown in fig. 2, four refrigerant outlets are disposed on the cylinder 100, the plurality of refrigerant outlets are distributed along a circumferential direction of the cylinder 100, and the plurality of refrigerant outlets are located at the same height.

The end caps include a first end cap 301 and a second end cap 302, the first end cap 301 being sealingly connected to the first end of the cartridge 100, the second end cap 302 being sealingly connected to the second end of the cartridge 100, the axial through-bore of the cartridge 100 defining a refrigerant distribution lumen 101 between the first end cap 301 and the second end cap 302, the first end cap 301 being provided with an interface for connecting the buffer tube 200.

The buffer tube 200 is connected to the interface, the shape of the buffer tube 200 is matched with that of the interface, the buffer tube 200 axially extends into the refrigerant distribution cavity 101 from the interface, the buffer tube 200 is cut off before extending to the second end cover 302 to form an inner nozzle 201, the cylinder 100 is sleeved outside the buffer tube 200, a space is reserved between the buffer tube 200 and the cylinder 100, and an annular channel 102 for communicating the buffer tube 200 and a refrigerant outlet is defined between the buffer tube 200 and the inner wall of the cylinder 100.

In the technical scheme of the utility model, the refrigerant distributor internally defines a refrigerant distribution cavity 101 through the cylinder body 100 and the end cover, the buffer tube 200 is arranged in the middle of the refrigerant distributor main body, the buffer tube 200 stretches into the refrigerant distribution cavity 101 and extends towards the direction of the second end cover 302, and the space of the refrigerant distribution cavity 101 is divided into a folded refrigerant circulation path through the buffer tube 200. When in use, the refrigerant enters the refrigerant distribution inner cavity 101 from the buffer tube 200, the refrigerant cannot directly enter the refrigerant outlet, needs to be dispersed and folded around after overflowing from the inner pipe orifice 201 and enter the annular channel 102 between the buffer tube 200 and the inner wall of the cylinder 100, and finally is discharged through a plurality of refrigerant outlets, and the whole process plays roles of buffering, dispersing and redistributing under the limiting actions of the buffer tube 200, the second end cover 302 and the cylinder 100, so that the refrigerant entering from the buffer tube 200 is uniformly distributed to the refrigerant outlets. The technical scheme of the utility model has low added cost, but can lead the refrigerant distribution to be more uniform and the fluid state to be more stable. And using fluid simulation analysis software to simulate the results obtained by simulation. The simulation conditions were: at the distributor inlet, refrigerant gas flows in at a flow rate of 5.8m/s and flows out from the plurality of refrigerant outlets. The simulation result shows that the area right in front of the air inlet has no serious gas area to accumulate so as to form a relatively high-pressure area, and the distribution of the whole pressure is more uniform, so that the fluid stability is better, and the refrigerant flow of the outlet is basically uniform.

The barrel 100 has a barrel wall that extends continuously in a circumferential direction, the buffer tube 200 has a tube wall that extends continuously in a circumferential direction, the cross sections of the barrel 100 and the buffer tube 200 may be configured as circles, ovals, or polygons, for example, in some embodiments, referring to fig. 4, the cross section of the barrel 100 is circular, the cross section of the buffer tube 200 is circular, the axis of the barrel 100 coincides with the axis of the buffer tube 200, the outer diameter of the buffer tube 200 is smaller than the inner diameter of the barrel 100, and an annular channel 102 is defined between the buffer tube 200 and the inner wall of the barrel 100 that communicates the buffer tube 200 with the coolant outlet. The concentric arrangement of the barrel 100 and the buffer tube 200 provides for a more uniform distribution of the refrigerant entering the annular channel 102.

In some embodiments, referring to FIGS. 1 and 3, buffer tube 200 extends outwardly from the interface to form an outer tube orifice 202 protruding from first end cap 301, with outer tube orifice 202 being adapted for quick connection to a four-way valve or the like of a heat pump unit.

To ensure uniform gas distribution of the buffer tube 200, referring to fig. 3, the axial position of the refrigerant outlet is offset from the axial position of the inner nozzle 201, and the axial position of the refrigerant outlet is located between the inner nozzle 201 and the first end cap 301. In other words, the refrigerant outlet is located below the inner nozzle 201 of the buffer tube 200, so that the refrigerant air flows out of the inner nozzle 201, passes through the second end cover 302 and the guide of the wall of the cylinder 100, is uniformly distributed, and finally enters the refrigerant outlet, so that the refrigerant is uniformly distributed in the refrigerant distribution cavity 101 more fully.

Further, referring to fig. 1 to 4, a mouthpiece 103 is disposed in the refrigerant outlet, and the mouthpiece 103 extends radially and is connected with the wall of the cylinder 100 in a sealing manner. The interface tube 103 is used for quick connection with a heat exchanger (e.g., an air side heat exchanger of an air source heat pump unit).

Referring to fig. 3, the interface tube 103 includes a necking section and a flaring section, the outer peripheral surface of the interface tube 103 forms a stepped surface 104 between the necking section and the flaring section, the necking section is inserted into the refrigerant outlet, and the stepped surface 104 abuts against the outer wall surface of the cylinder 100 and is fixedly connected with the cylinder 100 by welding.

In some embodiments, referring to FIG. 3, the buffer tube 200 is provided with a plurality of oil return holes 203, the oil return holes 203 extending radially inward of the first end cap 301. Refrigerating machine oil carried in the refrigerant is collected inside the first end cover 301 at the bottom of the refrigerant distribution inner cavity 101, a certain height difference is formed between the lower edge of the refrigerant outlet and the first end cover 301, the refrigerating machine oil at the bottom of the refrigerant distribution inner cavity 101 can be discharged through the buffer tube 200, and the influence of structural change on unit oil return is eliminated.

In some embodiments, the refrigerant distributor is made of metal, referring to fig. 3, the first end cap 301 has a first groove 303, the first groove 303 is clamped into the first end of the cylinder 100 and then welded to the cylinder 100, and the second end cap 302 has a second groove 304, and the second groove 304 is clamped into the second end of the cylinder 100 and then welded to the cylinder 100.

The embodiment of the utility model also provides a refrigerant pipeline connecting structure, which comprises the refrigerant distributor in any embodiment and a plurality of heat exchangers connected with a plurality of refrigerant outlets.

The embodiment of the utility model also provides temperature regulating equipment, which comprises the refrigerant pipeline connecting structure in any embodiment. The temperature adjusting device comprises a refrigerator, an air conditioner and the like.

In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the claims.

Claims (10)

1. A refrigerant distributor, comprising:

the cylinder body extends from a first end to a second end along the axial direction, the cylinder body is provided with an axial through hole which penetrates through the first end to the second end, the cylinder body is provided with a plurality of refrigerant outlets, and the refrigerant outlets are distributed along the circumferential direction of the cylinder body;

the end cover comprises a first end cover and a second end cover, the first end cover is in sealing connection with the first end of the cylinder body, the second end cover is in sealing connection with the second end of the cylinder body, an axial through hole of the cylinder body is used for defining a refrigerant distribution inner cavity between the first end cover and the second end cover, and an interface is arranged on the first end cover;

the buffer tube is connected to the interface, the buffer tube axially extends into the refrigerant distribution inner cavity from the interface, the buffer tube is cut off before extending to the second end cover to form an inner pipe orifice, and an annular channel for communicating the buffer tube with the refrigerant outlet is defined between the buffer tube and the inner wall of the cylinder.

2. The refrigerant distributor according to claim 1, wherein the cross section of the cylinder is circular, the cross section of the buffer tube is circular, the axis of the cylinder coincides with the axis of the buffer tube, and the outer diameter of the buffer tube is smaller than the inner diameter of the cylinder.

3. The refrigerant distributor according to claim 1, wherein the buffer tube extends outwardly from the mouthpiece to form an outer tube orifice protruding from the first end cap.

4. The refrigerant distributor according to claim 1, wherein the axial position of the refrigerant outlet is offset from the axial position of the inner nozzle, the axial position of the refrigerant outlet being located between the inner nozzle and the first end cap.

5. The refrigerant distributor according to claim 1, wherein an interface tube is provided in the refrigerant outlet, and the interface tube extends in a radial direction and is in sealing connection with a wall of the cylinder.

6. The refrigerant distributor according to claim 5, wherein the interface tube includes a reduced mouth section and a flared mouth section, an outer peripheral surface of the interface tube forms a stepped surface between the reduced mouth section and the flared mouth section, the reduced mouth section is inserted into the refrigerant outlet, and the stepped surface abuts against an outer peripheral surface of the cylinder.

7. The refrigerant distributor according to claim 1, wherein a plurality of oil return holes are formed in the buffer tube, and the oil return holes extend to the inner side of the first end cover in the radial direction.

8. The refrigerant distributor according to claim 1, wherein the first end cap has a first groove that is welded to the cylinder after being snapped into the first end of the cylinder, and the second end cap has a second groove that is welded to the cylinder after being snapped into the second end of the cylinder.

9. A refrigerant line connection structure comprising the refrigerant distributor according to any one of claims 1 to 8 and a plurality of heat exchangers connected to a plurality of the refrigerant outlets.

10. A temperature regulating apparatus comprising the refrigerant line connection as recited in claim 9.

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