CN218495432U

CN218495432U - Throttle sleeve, air conditioner indoor unit and air conditioner

Info

Publication number: CN218495432U
Application number: CN202222296484.1U
Authority: CN
Inventors: 李靖; 殷纪强; 范强; 项红荧; 吕楠
Original assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-02-17
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a restriction nozzle stub, air conditioner and air conditioner, the restriction nozzle stub includes: a pipe body; the valve core is arranged in the pipe body, and a throttling hole is formed in the valve core; the component of making an uproar falls, set up in the body, just it is located to fall the component of making an uproar the play liquid end of orifice, fall the component of making an uproar be used for the buffering by the refrigerant that the orifice flows is allowed the refrigerant flows through, has reduced the refrigerant and has sprayed the dynamics on body or the disk seat when flowing out the orifice, consequently, the utility model discloses a throttling stub can effectively reduce the noise that the in-process produced throttling decompression is carried out to the refrigerant, has promoted user experience.

Description

Throttle sleeve, air conditioner indoor unit and air conditioner

Technical Field

The utility model relates to a refrigeration plant technical field especially relates to a choke nozzle stub, air conditioner and air conditioner.

Background

Refrigeration devices, such as air conditioners, refrigerators and the like, are widely used in human society, and most of refrigeration systems of these refrigeration devices employ a refrigeration cycle system including a compressor, a heat exchanger, a throttling device and the like, so as to provide continuous cooling capacity for users to store food or enjoy cool.

In the prior art, the throttling device generates large noise in the process of throttling and depressurizing the refrigerant, so that the experience of a user in using the refrigeration equipment is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can solve among the above-mentioned prior art at least one defect's restriction nozzle stub, air conditioner and air conditioner.

The utility model discloses a further purpose reduces the noise that the throttle nozzle stub produced at the in-process that carries out the throttle step-down to the refrigerant.

In particular, the utility model provides a restriction nozzle stub, it includes:

a tube body;

the valve core is arranged in the pipe body, and a throttling hole is formed in the valve core;

and the noise reduction component is arranged in the pipe body and is positioned at the liquid outlet end of the throttling hole, and the noise reduction component is used for buffering the refrigerant flowing out of the throttling hole and allowing the refrigerant to flow through.

Furthermore, the throttling short pipe also comprises a valve seat arranged in the pipe body, the valve seat comprises a first accommodating cavity and a reducing hole communicated with the first accommodating cavity, and the valve core is arranged in the first accommodating cavity; and the number of the first and second electrodes,

at least part of the noise reduction component is arranged in the reducing hole.

Furthermore, the valve seat also comprises a second accommodating cavity communicated with the reducing hole, and the first accommodating cavity and the second accommodating cavity are respectively positioned at two ends of the reducing hole; and also,

one part of the noise reduction component is arranged in the variable diameter hole, and the other part of the noise reduction component is arranged in the second accommodating cavity.

Furthermore, the restriction sleeve further comprises a first filter screen and a second filter screen which are arranged in the pipe body, the first filter screen and the second filter screen are positioned at two ends of the valve core, and the noise reduction component is arranged between the second filter screen and the valve core.

Further, the noise reduction member is a wire mesh.

In particular, the utility model also provides an air conditioner indoor unit, it includes the above-mentioned restriction nozzle stub.

Further, the air conditioner indoor unit is connected with the air conditioner outdoor unit through a connecting pipe; and the number of the first and second electrodes,

the indoor unit of the air conditioner comprises an indoor heat exchanger, and a refrigerant pipe of the indoor heat exchanger is connected with the on-line pipe;

the throttling short pipe is connected between the refrigerant pipe and the on-line pipe.

Furthermore, a vertical pipeline is arranged between the on-line pipe and the refrigerant pipe, the vertical pipeline comprises a first connecting section close to the refrigerant pipe and a second connecting section close to the on-line pipe, the throttling short pipe is connected between the first connecting section and the second connecting section, and the length of the first connecting section is 20cm-50cm.

Furthermore, a horizontal pipeline is further arranged between the on-line pipe and the refrigerant pipe, the horizontal pipeline comprises a third connecting section close to the refrigerant pipe and a fourth connecting section close to the on-line pipe, the throttling short pipe is connected between the third connecting section and the fourth connecting section, and the length of the fourth connecting section is 5cm-30cm.

Particularly, the utility model also provides an air conditioner, it includes foretell air conditioner indoor unit.

The utility model discloses a choke sleeve, because its play liquid end at the orifice of case has set up the component of making an uproar that falls, the refrigerant of coming the buffering to be flowed by the orifice, the component of making an uproar still allows the refrigerant to flow through of falling simultaneously, and then has reduced the refrigerant and has sprayed the dynamics on body or the disk seat when flowing the orifice, consequently, the utility model discloses a choke sleeve can effectively reduce the noise that the choke sleeve produced at the in-process that carries out the throttle step-down to the refrigerant, has promoted user experience.

Further, the utility model discloses a restriction nozzle stub because it is provided with first filter screen and second filter screen at the both ends of case, flows in the flow direction of restriction nozzle stub decompression throttle when the refrigerant, and the velocity of flow of refrigerant can be reduced when first filter screen, and then first filter screen can cushion the injection degree of refrigerant when the outflow orifice. And, when the refrigerant flows out the orifice and flows through the second filter screen, the flow velocity of the refrigerant is relieved again, and then the second filter screen can reduce the friction of refrigerant and body. Therefore, the utility model discloses a throttle nozzle stub can reduce the noise that throttle nozzle stub produced at the in-process that carries out the throttle step-down to the refrigerant, has promoted user experience.

The utility model discloses an air conditioner, because it includes foretell throttle sleeve, be about to during above-mentioned throttle sleeve has installed air conditioner, and then the beneficial technological effect that above-mentioned throttle sleeve has, the utility model discloses an air conditioner possesses equally. Therefore, the utility model discloses an air conditioner can effectively reduce the noise that the throttle nozzle stub is carrying out the in-process production that the throttle decompression is carried out to the refrigerant, has promoted the user and has used air conditioner's experience. And simultaneously, because the utility model discloses an indoor set of air conditioner has installed the indoor machine side of air conditioner with the throttle sleeve, when having avoided throttling arrangement to set up in the off-premises station, the low temperature low pressure refrigerant that has been throttled by throttling arrangement step-down flows to the online intraductal influence that receives outdoor higher ambient temperature and leads to cold volume's waste to and the condition of pressure drop loss, and then can make the refrigerant throttle the step-down indoor, and still be the highly compressed refrigerant of high temperature in the outdoor online intraductal, consequently, the utility model discloses an indoor set of air conditioner can avoid the waste of cold volume, and pressure drop loss, can guarantee indoor air conditioner's refrigeration performance.

The utility model discloses an air conditioner, owing to including foretell air conditioner indoor unit, consequently, the beneficial technological effect that foretell air conditioner indoor unit possessed, the utility model discloses an air conditioner possesses equally.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an air conditioner indoor unit according to an embodiment of the present invention;

fig. 3 is a schematic structural view of an air conditioner indoor unit according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view taken at "A" in FIG. 3;

fig. 5 is a schematic diagram illustrating the connection of a distributor, a vertical pipe and a throttle pipe stub in an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating the connection of a distributor, a horizontal pipe and a throttle pipe stub in an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 7 is one of cross-sectional views of a choke spool according to an embodiment of the present invention;

fig. 8 is a second cross-sectional view of a restriction spool according to an embodiment of the invention.

In the drawings:

100. an air conditioner indoor unit; 110. a housing; 111. an air inlet; 112. an air outlet; 120. an indoor heat exchanger; 121. refrigerant pipe holes; 122. heat exchange fins; 130. an indoor fan; 141. a vertical pipeline; 1411. a first connection section; 1412. a second connection section; 142. a horizontal pipeline; 1421. a third connection section; 1422. a fourth connection section; 150. a dispenser;

200. an air conditioner outdoor unit;

300. an on-line pipe;

400. a restriction sleeve; 410. a pipe body; 420. a valve core; 421. an orifice; 430. a noise reducing member; 440. a valve seat; 441. a first accommodating chamber; 442. a variable diameter hole; 423. a second accommodating chamber; 451. a first filter screen; 452. a second filter.

Detailed Description

In the description of the present embodiments, it is to be understood that the terms "lateral," "length," "vertical," "horizontal," "inner," "outer," "axial," and the like, indicate orientations or positional relationships based on those illustrated in the drawings, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. When a feature "comprises or includes" a or some of the features that it covers, this is to be taken as an indication that other features are not excluded and that other features may further be included, unless expressly stated otherwise.

Unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to specific situations.

Unless otherwise defined, all terms (including technical and scientific terms) used in the description of the present embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the description of the present embodiments, reference to the description of the terms "embodiment," "implementation," 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 air conditioner in the present embodiment is described in detail below with reference to fig. 1. Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention.

Referring to fig. 1, in the present embodiment, an air conditioner includes an indoor unit 100 and an outdoor unit 200. The indoor unit 100 and the outdoor unit 200 are connected together by a joint pipe 300. Specifically, the indoor unit 100 includes an indoor heat exchanger 120 and an indoor fan 130, an outdoor heat exchanger and an outdoor fan (not shown) are disposed in the outdoor unit 200, and the connecting pipe 300 is connected between the indoor heat exchanger 120 and the outdoor heat exchanger.

In this embodiment, the air conditioner further includes a compressor (not shown), a throttle nipple 400, and a four-way valve (not shown), and a circulation line connecting the compressor, the interior exchanger, the exterior heat exchanger (not shown), and the four-way valve, so that the refrigerant can circulate through the above components.

In this embodiment, the four-way valve is used to switch the flow direction of the refrigerant flowing out of the compressor, so that the refrigerant flowing out of the compressor first flows into the indoor heat exchanger 120 or the outdoor heat exchanger, and the air conditioner operates in a cooling mode or a heating mode.

In the heating mode, a high-temperature and high-pressure gaseous refrigerant flows from the compressor into the indoor heat exchanger 120, and an air flow having exchanged heat with the indoor heat exchanger 120 is blown into the indoor space by the indoor fan 130, thereby completing a process of heating the indoor space.

Under the refrigeration mode, the highly compressed gaseous refrigerant of high temperature flows into outdoor heat exchanger from the compressor in, and dispel the heat to possessing thermal indoor heat exchanger 120 through indoor fan 130, then the refrigerant becomes the highly compressed liquid refrigerant flow direction of high temperature and flows to throttle pipe 400, the throttle step-down effect through throttle pipe 400, make the refrigerant become the refrigerant of low temperature low pressure and then flow into indoor heat exchanger 120, make indoor heat exchanger 120 possess cold volume, and will carry out the air current after the heat exchange with indoor heat exchanger 120 through indoor fan 130 and blow to the indoor space in, and then accomplish the cooling process for the indoor space.

Since the air conditioner of the present embodiment includes the air conditioner indoor unit 100, the air conditioner of the present embodiment also has advantageous technical effects that the air conditioner indoor unit 100 of the following embodiments has.

In a split type air conditioner, a throttling device is usually installed on the outdoor unit side, when an air conditioning system operates in a refrigeration mode, throttled low-temperature low-pressure gas-liquid two-phase refrigerant flows through an online pipe firstly and then enters an evaporator, but the refrigerant in the online pipe is in a high-temperature environment, which causes waste of a part of refrigeration capacity. Meanwhile, the refrigerant in the on-line pipe has high flow velocity, so that considerable pressure drop loss is caused, and the energy consumption of the compressor is increased. The influence on the refrigerating capacity of the air conditioner is more obvious in the high-temperature environment, and when the external environment exceeds 40 ℃, the refrigerating capacity of the air conditioner is reduced by 40%. In order to overcome the defects, the embodiment provides the indoor unit of the air conditioner.

The air conditioner indoor unit 100 of the present embodiment will be described in detail with reference to fig. 1 to 6. Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention; fig. 2 is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of an air conditioner indoor unit according to an embodiment of the present invention; FIG. 4 is an enlarged schematic view taken at "A" in FIG. 3; fig. 5 is a schematic diagram illustrating the connection of a distributor, a vertical pipe and a throttle pipe stub in an indoor unit of an air conditioner according to an embodiment of the present invention; fig. 6 is a schematic diagram showing the connectivity of the distributor, the horizontal pipe and the restriction nozzle stub in the indoor unit of the air conditioner according to an embodiment of the present invention.

Referring to fig. 1 and 2, in the present embodiment, an air conditioner indoor unit 100 is connected to an air conditioner outdoor unit 200 through an on-line pipe 300; also, the indoor unit 100 includes a casing 110, an indoor fan 130, an indoor heat exchanger 120, and a choke spool 400, and the indoor fan 130, the indoor heat exchanger 120, and the choke spool 400 are all disposed within the casing 110.

Because the throttling short pipe 400 is installed in the air conditioner indoor unit 100, the refrigerant can be throttled and depressurized indoors, and the refrigerant still has high temperature and high pressure in the outdoor online pipe 300, so that the waste of cold energy can not occur, the pressure drop loss can not be caused, the refrigeration effect of the air conditioner indoor unit 100 is ensured, and the experience of a user in using the air conditioner indoor unit is improved.

Referring to fig. 2, in the present embodiment, the housing 110 is provided with an air inlet 111 and an air outlet 112, and the indoor fan 130 introduces the air flow in the indoor space into the housing 110 through the air inlet hole, and guides the air flow to pass through the indoor heat exchanger 120 to exchange heat therewith, and then discharges the air flow into the indoor space through the air outlet 112.

Referring to fig. 2, in the present embodiment, the indoor heat exchanger 120 includes a refrigerant pipe and a plurality of heat exchange fins 122. The refrigerant pipe is inserted into the refrigerant pipe holes 121 of the plurality of heat exchange fins 122, and due to the effect of heat transfer, the heat of the refrigerant flowing in the refrigerant pipe can be transferred to the outer side face of the refrigerant pipe, so that heat exchange is carried out with a heat exchange medium (air). And the heat in the refrigerant pipe can be transferred to the heat exchange fins 122, thereby increasing the heat exchange capability of the heat exchange medium and the indoor heat exchanger 120.

In this embodiment, the refrigerant pipe of the indoor heat exchanger 120 is connected to the connecting pipe 300, and the choke stub 400 is connected between the refrigerant pipe of the indoor heat exchanger 120 and the connecting pipe 300. Further, the refrigerant flowing from the connecting pipe 300 to the indoor space is throttled and depressurized by the throttle sleeve 400 before entering the indoor heat exchanger 120, so that the indoor unit 100 of the air conditioner of this embodiment can avoid waste of cooling capacity and pressure drop loss, and can ensure the refrigeration performance of the indoor air conditioner 100.

Referring to fig. 3 and 5, in an embodiment of installing the throttling short pipe 400 in this embodiment, a vertical pipeline 141 is further disposed between the online pipe 300 and the refrigerant pipe, the vertical pipeline 141 includes a first connection section 1411 close to the refrigerant pipe and a second connection section 1412 close to the online pipe 300, the throttling short pipe 400 is disposed between the first connection section 1411 and the second connection section 1412, and the length of the first connection section 1411 is 20cm-50cm. For example, the length of the first connection segment 1411 may be 20cm, 30cm, 40cm, 50cm, etc.

It can be understood that the length of the first connection section 1411 is 20cm to 50cm, so that the distance between the end of the restriction short pipe 400 and the end of the refrigerant pipe is 20cm to 50cm, and thus, when the refrigerant is throttled and depressurized by the restriction short pipe 400, the refrigerant has small pressure loss and cold loss, and meanwhile, the restriction short pipe 400 does not occupy too much vertical space in the housing 110.

Referring to fig. 3, 4 and 5, in another embodiment of the present embodiment in which the short throttling pipe 400 is installed, the indoor unit 100 of the air conditioner further includes a distributor 150, the distributor 150 is installed on a refrigerant pipe of the indoor heat exchanger 120, and a vertical pipe 141 is further disposed between the on-line pipe 300 and the distributor 150. The short throttling pipe 400 is installed on the vertical pipeline 141, and the distance between the short throttling pipe 400 and the distributor 150 is 20cm-50cm, so that when the refrigerant is throttled and depressurized by the short throttling pipe 400, the refrigerant has small pressure loss and cold loss, and meanwhile, the short throttling pipe 400 cannot occupy excessive vertical space in the shell 110.

In this embodiment, a plurality of refrigerant pipes of the indoor heat exchanger 120 may be provided, or a plurality of indoor heat exchangers 120 may be provided in the indoor unit 100 of the air conditioner. Therefore, the distributor 150 is configured to distribute the refrigerant throttled and depressurized by the throttle pipe 400 to the plurality of indoor heat exchangers 120 or a plurality of refrigerant pipes, so that the refrigerant completes a circulating flow in the circulating system, the flow rate of the refrigerant in the indoor heat exchangers 120 is increased, and the heat exchange effect of the indoor heat exchangers 120 is further ensured.

Referring to fig. 3 and 6, in another embodiment of the installation of the choke spool 400 in the present embodiment, a horizontal pipeline 142 is further disposed between the on-line pipe 300 and the refrigerant pipe, the horizontal pipeline 142 includes a third connecting section 1421 near the refrigerant pipe and a fourth connecting section 1422 near the on-line pipe 300, the choke spool 400 is disposed between the third connecting section 1421 and the fourth connecting section 1422, and the length of the fourth connecting section 1422 is 5cm to 30cm. For example, the length of the fourth connector segment 1422 may be 5cm, 15cm, 25cm, 30cm, and so forth.

It can be understood that the length of the fourth connecting section 1422 is set to 5cm to 30cm, so that the refrigerant has little pressure loss and cold loss after the throttling and depressurizing of the short throttling pipe 400, and the short throttling pipe 400 does not occupy too much lateral space in the housing 110.

In another embodiment of the installation of the short throttling pipe 400 in this embodiment, a horizontal pipeline 142 is further disposed between the online pipe 300 and the refrigerant pipe, the short throttling pipe 400 is disposed on the horizontal pipeline 142, and the distance between the short throttling pipe 400 and the online pipe 300 is 5cm-30cm, so that when the refrigerant is throttled and depressurized by the short throttling pipe 400, the refrigerant has a small pressure loss and a small cooling loss, and meanwhile, the short throttling pipe 400 does not occupy too much lateral space in the housing 110.

Since the air conditioner indoor unit 100 in this embodiment is provided with the throttle pipe 400 of the air conditioner, the air conditioner indoor unit 100 in this embodiment also has the following advantageous technical effects that the throttle pipe 400 in the following embodiment has.

The choke stub of the present embodiment is described in detail below with reference to fig. 7 and 8. Fig. 7 is one of cross-sectional views of a choke spool according to an embodiment of the present invention; fig. 8 is a second cross-sectional view of the choke stub according to the embodiment of the present invention, in which solid arrows in fig. 8 indicate a first flow direction of the refrigerant, and dotted arrows indicate a second flow direction of the refrigerant.

Referring to fig. 7 and 8, in the present embodiment, the choke spool 400 includes a pipe body 410, a valve spool 420, and a noise reduction member 430. The valve core 420 is arranged in the tube body 410, and the valve core 420 is provided with a throttling hole 421; the noise reduction member 430 is disposed in the pipe body 410, the noise reduction member 430 is located at the liquid outlet end of the orifice 421, and the noise reduction member 430 is configured to buffer the refrigerant flowing out of the orifice 421 and allow the refrigerant to flow therethrough.

Because the throttle sleeve 400 of this embodiment, the play liquid end of the orifice 421 of case 420 has set up and has fallen the component 430 of making an uproar and has come the buffering by the refrigerant that the orifice 421 flowed out, and, fall the circulation that the component can allow the refrigerant of making an uproar, and then has reduced the refrigerant and has sprayed the dynamics on body 410 or the disk seat 440 when flowing out orifice 421, consequently, the utility model discloses a throttle sleeve 400 can effectively reduce the noise that throttle sleeve 400 produced at the in-process that carries out the throttle step-down to the refrigerant, has promoted user experience.

Referring to fig. 7, in the present embodiment, the orifice 421 is opened in the valve body 420 in the axial direction of the pipe body 410. Further, the length of the throttle hole 421 can be ensured to be the shortest, and the volume of the throttle short pipe 400 is reduced while the throttling and pressure reducing effect on the refrigerant is ensured.

In this embodiment, the noise reduction member 430 has a plurality of flow holes communicating with each other, or may have a frame structure with dense connecting bars, so that the noise reduction member 430 can buffer the refrigerant flowing out of the throttle hole 421 and allow the refrigerant to flow therethrough.

In the present embodiment, the noise reduction member 430 is a wire mesh.

It can be understood that the wire mesh has good impact resistance, so as to ensure the service life of the noise reduction member 430, and thus the service life of the restriction pipe 400 of the embodiment, and at the same time, has good passability, and therefore, the noise reduction member 430 is preferably a wire mesh.

Referring to fig. 7 and 8, in the present embodiment, the choke plug 400 further includes a valve seat 440 disposed in the pipe body 410, the valve seat 440 includes a first receiving chamber 441 and a reducing hole 442 communicated with the first receiving chamber 441, and the valve element 420 is disposed in the first receiving chamber 441; also, at least a portion of the noise reduction member 430 is disposed within the reducer bore 442.

Referring to fig. 8, it is to be understood that the spool 420 is slidably disposed within the first accommodation chamber 441. In the first flow direction of the refrigerant, the valve body 420 is pushed by the refrigerant such that the liquid outlet end of the orifice 421 is adjacent to the reducer hole 442, and a space between the valve body 420 and the wall of the reducer hole 442 is closed, so that the refrigerant can only flow through the orifice 421 and is throttled and depressurized by the orifice 421. Furthermore, to fall the component 430 and set up and can make the refrigerant fall the liquid outlet end setting of the component 430 next-door neighbour orifice 421 of falling the noise when being reduced the pressure by the throttle nozzle stub 400 throttle in the reducing bore 442, further promoted fall the effect that the component 430 that falls the noise reduces the refrigerant and spray the dynamics on body 410 or valve seat 440 when outflow orifice 421, further promoted the utility model discloses a throttle nozzle stub 400 is carrying out the noise reduction effect of the in-process that the throttle reduced the pressure to the refrigerant.

In the second flow direction of the refrigerant, the valve element 420 is pushed by the refrigerant to a position where a flow space is formed between the valve element 420 and the valve seat 440, so that the refrigerant can flow through the flow space between the valve element 420 and the valve seat 440 and cannot be throttled and depressurized by the throttle hole 421, and the throttle pipe 400 realizes a conducting effect on the refrigerant.

Referring to fig. 7 and 8, in the present embodiment, the valve seat 440 further includes a second receiving cavity 443 communicating with the reducing bore 442, and the first receiving cavity 441 and the second receiving cavity 443 are respectively located at both ends of the reducing bore 442; also, a portion of the noise reduction member 430 is disposed in the reducer hole 442, and another portion of the noise reduction member 430 is disposed in the second accommodation cavity 443. Therefore, the noise reduction member 430 in the second accommodation cavity 443 can buffer the flow rate of the refrigerant flowing out from the liquid outlet end of the throttle hole 421, and the noise reduction effect of the noise reduction member 430 is further ensured.

Referring to fig. 7 and 8, in the present embodiment, the choke spool 400 further includes a first filter 451 and a second filter 452 disposed in the pipe body 410, the first filter 451 and the second filter 452 are located at both ends of the valve spool 420, and the noise reduction member 430 is disposed between the second filter 452 and the valve spool 420.

Because the first filter screen 451 and the second filter screen 452 are disposed at the two ends of the valve core 420 of the short throttling pipe 400 of the embodiment, when the refrigerant flows upward in the flow direction of the pressure reduction and throttling of the short throttling pipe 400, the flow rate of the refrigerant can be reduced when the refrigerant passes through the first filter screen 451, and then the first filter screen 451 can buffer the injection degree of the refrigerant when the refrigerant flows out of the throttling hole 421. When the refrigerant flows through the second filter 452 through the refrigerant outflow orifice 421, the flow rate of the refrigerant is reduced again, and the second filter 452 can reduce friction between the refrigerant and the pipe 410. Therefore, the utility model discloses a throttle sleeve 400 can reduce throttle sleeve 400 and carry out the noise that the in-process produced of throttle step-down to the refrigerant, has promoted user experience. Meanwhile, the first filter screen 451 and the second filter screen 452 can also filter impurities in the refrigerant, so that the restriction short pipe 400 is prevented from being blocked, and the service life of the restriction short pipe 400 is ensured.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made to the invention consistent with the principles of the invention, which may be directly determined or derived from the disclosure of the present invention, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A choke spool, comprising:

a tube body;

2. A choke spool according to claim 1,

the throttling short pipe also comprises a valve seat arranged in the pipe body, the valve seat comprises a first accommodating cavity and a reducing hole communicated with the first accommodating cavity, and the valve core is arranged in the first accommodating cavity; and also,

3. A choke stub according to claim 2,

the valve seat further comprises a second accommodating cavity communicated with the reducing hole, and the first accommodating cavity and the second accommodating cavity are respectively positioned at two ends of the reducing hole; and the number of the first and second electrodes,

one part of the noise reduction component is arranged in the reducing hole, and the other part of the noise reduction component is arranged in the second accommodating cavity.

4. A choke spool according to claim 1,

the throttling short pipe further comprises a first filter screen and a second filter screen which are arranged in the pipe body, the first filter screen and the second filter screen are located at two ends of the valve core, and the noise reduction component is arranged between the second filter screen and the valve core.

5. A choke spool according to claim 1,

the noise reduction member is a wire mesh.

6. An indoor unit of an air conditioner, comprising the choke stub of any one of claims 1 to 5.

7. The indoor unit of claim 6, wherein the indoor unit is connected to the outdoor unit through a connecting pipe; and the number of the first and second electrodes,

8. An indoor unit of an air conditioner according to claim 7,

the throttling short pipe is connected between the first connecting section and the second connecting section, and the length of the first connecting section is 20cm-50cm.

9. An indoor unit of an air conditioner according to claim 7, wherein a horizontal pipeline is further arranged between the on-line pipe and the refrigerant pipe, the horizontal pipeline comprises a third connecting section close to the refrigerant pipe and a fourth connecting section close to the on-line pipe, the throttling short pipe is connected between the third connecting section and the fourth connecting section, and the length of the fourth connecting section is 5cm-30cm.

10. An air conditioner characterized by comprising an air conditioner indoor unit according to any one of claims 6 to 9.