Exhaust silencer and its electronic expansion valve

Abstract

The valve silencer (140) and the electronic expansion valve (100) thereof include a main body (141) having an accommodating chamber with an open end and a side wall with a plurality of through holes (143) communicating with the accommodating chamber, the extending direction of which is inclined or perpendicular to the extending direction of the through holes (143), and a connecting part (142) installed at the opening of the main body (141).

Description

Technical Field

[0001]

[0001] This application claims the priority of a Chinese patent application with an application number of 201920890465.7 and an invention title of "Valve Silencer and Its Electronic Expansion Valve", which was filed on June 13, 2019, and all of its contents are incorporated herein by reference.

[0002]

[0002] This application relates to the technical field of cooling devices, and particularly to valve silencers and electronic expansion valves.

Background Art

[0003]

[0003] The expansion valve is one of the important components in the cooling system and is usually installed between the condenser and the evaporator. The electronic expansion valve is one type of expansion valve, which controls the opening degree of the expansion valve by controlling the stepping motor to further achieve the purpose of adjusting the liquid supply amount. The stepless variable capacity cooling system has a wide adjustment range of the cooling liquid supply amount and requires high-speed adjustment responsiveness, which is difficult to meet well with the conventional throttling device (such as a thermal expansion valve), but can be well satisfied with the electronic expansion valve.

[0004]

[0004] However, in general, during use, the electronic expansion valve often has a gas-liquid mixed state in the refrigerant, so the fluid flowing through the valve core port is greatly accelerated and a large amount of noise is generated, which will affect the comfort.

Summary of the Invention

[0005]

[0005] According to the application of various embodiments of the present application, a valve silencer is provided, and the valve silencer includes

[0006] a main body having a receiving chamber with one end open, a plurality of through holes communicating with the receiving chamber are opened on the side wall, and the extending direction is inclined or perpendicular to the extending direction of the through holes, and

[0007] a connecting portion installed at the opening of the main body.

[0006]

[0008] In the above technical solution, the refrigerant flows in from the open end or side surface of the main body and flows out through the through hole. When the refrigerant passes through the electronic expansion valve, it flows through the valve silencer, is blocked by the valve silencer, and is divided into multiple refrigerant flows after flowing through the through hole of the valve silencer. Then, the multiple refrigerant flows are further mixed on the liquid outlet side, thereby removing large bubbles in the refrigerant, miniaturizing the bubbles, and reducing noise, which has advantages in this regard.

[0007]

[0009] In one embodiment, the main body is tubular or funnel-shaped.

[0008]

[0010] In one embodiment, the through hole gradually moves away from one end of the opening from the inside to the outside of the accommodation chamber. By installing it in this way, when the refrigerant flows through the valve silencer, the blockage it receives becomes smaller.

[0009]

[0011] In one embodiment, the multiple through holes are evenly distributed on the main body. By installing it in this way, the refrigerant can be evenly dispersed into multiple flows and flow out from the liquid outlet side of the valve silencer.

[0010]

[0012] In one embodiment, the connection part is annular and extends from the opening towards the outside of the main body. The connection part is used to connect between the electronic expansion valve and the pipeline.

[0011]

[0013] In one embodiment, the connection part includes a first connection part that is annular and a second connection part that is tubular, and the diameter of the second connection part is larger than the diameter of the opening. By bonding the second connection part inside the electronic expansion valve, the valve silencer stops swinging and the connection of the valve silencer becomes more stable.

[0012]

[0014] This application further provides an electronic expansion valve including any one of the above-mentioned valve silencers.

[0013]

[0015] In one embodiment, the electronic expansion valve

[0016] has a valve body with a supply port and a discharge port,

[0017] A supply pipe connected to the supply port,

[0018] and further includes a discharge pipe connected to the discharge port,

[0019] The valve silencer is installed at the supply port and / or the discharge port.

[0014]

[0020] In one embodiment, the electronic expansion valve includes a first silencer installed at the supply port and / or a second silencer installed at the discharge port.

[0015]

[0021] In one embodiment, the connection part of the first silencer is engaged between the valve body and the supply pipe, and the main body is located inside the supply pipe.

Brief Description of the Drawings

[0016]

[0022] To more clearly explain the embodiments and / or examples of those inventions disclosed in this specification, one or more drawings can be referred to. Additional details and examples for explaining the drawings do not limit the scope of any of the disclosed inventions, the currently described embodiments and / or examples, and the currently understood optimal aspects of these inventions.

[0017]

Figure 1

[0023] It is a cross-sectional view of the electronic expansion valve according to the first embodiment provided in this application.

Figure 2

[0024] It is a cross-sectional view of the electronic expansion valve according to the second embodiment provided in this application.

Figure 3

[0025] It is a cross-sectional view of the electronic expansion valve according to the third embodiment provided in this application.

Figure 4

[0026] It is a cross-sectional view of the electronic expansion valve according to the fourth embodiment provided in this application.

Figure 5

[0027] It is a perspective view of the first embodiment of the valve silencer provided in this application.

Figure 6

[0028] It is a cross-sectional view of the first embodiment of the valve silencer provided in this application.

Figure 7

[0029] It is a perspective view of a second embodiment of the valve silencer provided in the present application.

Figure 8

[0030] It is a cross-sectional view of a second embodiment of the valve silencer provided in the present application.

Figure 9

[0031] It is a perspective view of a third embodiment of the valve silencer provided in the present application.

Figure 10

[0032] It is a cross-sectional view of a third embodiment of the valve silencer provided in the present application.

[0018]

[0033] In the drawings, the electronic expansion valve is 100, the valve body is 110, the supply port is 111, the discharge port is 112, the connection seat is 113, the supply pipe is 120, the discharge pipe is 130, the valve silencer is 140, the main body is 141, the connection part is 142, the first connection part is 1421, the second connection part is 1422, and the through hole is represented by 143.

Embodiments for Carrying Out the Invention

[0019]

[0034] Hereinafter, with reference to the drawings in the embodiments of the present application, the technical aspects in the embodiments of the present application will be clearly and completely described. However, it is obvious that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0020]

[0035] It should be noted that when an assembly is said to be "mounted on" another assembly, it may be directly placed on the other assembly, or there may be an assembly placed in between. When an assembly is considered to be "installed on" another assembly, it may be directly installed on the other assembly, or there may be an assembly placed in between at the same time. When an assembly is considered to be "fixed to" another assembly, it may be directly fixed on the other assembly, or there may be an assembly placed in between at the same time.

[0021]

[0036] Unless otherwise defined, all technical and scientific terms used herein shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms of the text used in the specification of this application are for the purpose of merely explaining specific embodiments and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0022]

[0037] This application provides an electronic expansion valve 100 including a valve body 110, a supply pipe 120, a discharge pipe 130, and a valve silencer 140.

[0023]

[0038] Specifically, the valve body 110 has a supply port 111 and a discharge port 112. The supply pipe 120 is connected to the supply port 111, the discharge pipe 130 is connected to the discharge port 112, and the valve silencer 140 is installed at the supply port 111 and / or the discharge port 112 to reduce the noise generated when the refrigerant flows through the valve body 110. Note that if there are air bubbles mixed in the refrigerant and the volume of the air bubbles is too large, when flowing into the valve body 110, intermittent loud noises will occur. When the refrigerant flows out of the valve body 110, the flow velocity at the discharge port 112 becomes fast, so turbulent flow occurs in the refrigerant and loud noises are generated. At this time, if large air bubbles are mixed in the refrigerant, even more intermittent loud noises will occur, affecting the comfort of the user. Therefore, by installing the valve silencer 140 at the supply port 111 of the valve body 110, the number of large air bubbles can be effectively reduced and intermittent loud noises can be reduced. On the other hand, by installing the valve silencer 140 at the discharge port 112 of the valve body 110, after the refrigerant flows through the valve body 110, the refrigerant with turbulent flow is Guide smoothed, and further non-uniform air bubbles are removed, so that the noise at the discharge port 112 of the valve body 110 can be reduced. Also, by removing large air bubbles, the noise in the entire pipeline can be further reduced.

[0024]

[0039] The valve silencer 140 includes a main body 141 and a connection part 142 installed on the main body 141. The main body 141 has a receiving chamber with one end open, and a plurality of through holes 143 communicating with the receiving chamber are opened on the side wall of the main body 141. Moreover, the extending direction of the main body 141 is inclined or perpendicular to the extending direction of the through holes 143. The connection part 142 is installed at the opening of the main body 141.

[0025]

[0040] When the valve silencer 140 is installed, the refrigerant flows in from the open end of the main body 141, flows out from the side after passing through the through holes 143, or flows in from the side of the main body 141 through the through holes 143 and flows out from the open end. In this way, when the refrigerant passes through the electronic expansion valve 100, it flows through the valve silencer 140, is blocked by the valve silencer 140, and after flowing through the through holes 143 of the valve silencer 140, it is divided into a plurality of refrigerant flows to reduce bubbles. The plurality of refrigerant flows are further mixed on the liquid outlet side, thereby removing large bubbles in the refrigerant, making the bubbles finer and reducing noise.

[0026]

[0041] Preferably, the through holes 143 are opened so as to gradually separate from one end of the opening outward from the inside of the receiving chamber. By installing in this way, when the refrigerant flows through the valve silencer 140, the blockage received becomes smaller.

[0027]

[0042] In other embodiments, the through holes 143 may be opened toward the axis of the main body 141 and perpendicular to the axial direction.

[0028]

[0043] Preferably, the plurality of through holes 143 are evenly distributed on the main body 141. By installing in this way, the refrigerant can be evenly dispersed into a plurality of flows and flow out from the liquid outlet side of the valve silencer 140.

[0029]

[0044] As shown in FIGS. 5 and 6, In one embodiment, the connection part 142 is annular and extends from the opening toward the outside of the main body 141. The connection part 142 is attached between the valve body 110 and the pipeline.

[0030]

[0045] As shown in FIGS. 7 and 8, In other embodiments, the connecting portion 142 includes a first connecting portion 1421 having an annular shape and a second connecting portion 1422 having a tubular shape, and the diameter of the second connecting portion 1422 is larger than the diameter of the opening. By bonding the second connecting portion 1422 inside the valve body 110, the valve silencer 140 stops swinging, and the connection of the valve silencer 140 becomes more stable.

[0031]

[0046] Hereinafter, specific embodiments will be described with reference to the drawings.

[0032]

[0047] Figure 5 from Figure 8 As shown in FIG., in the first embodiment, the main body 141 has a tubular shape, and the through holes 143 are evenly distributed on the side surface of the main body 141.

[0034]

[0049] As shown in FIGS. 9 and 10, in other embodiments, the main body 141 has a funnel shape, and the bottom is closed. The through holes 143 are evenly distributed on the tapered surface. The main body 141 is installed in a funnel shape. After the refrigerant flows from the outside of the main body 141 through the through holes 143 on the main body 141 and into the main body 141, a plurality of refrigerants merge to reduce the number of large air bubbles. Moreover, the conical structure can reduce the blockage of the refrigerant by the valve silencer 140. After the refrigerant flows out of the main body 141 through the through holes 143 from the inside of the main body 141, compared with the structure of the tubular main body, the space between the main body 141 and the pipe wall increases, so the blockage effect on the refrigerant can be reduced.

[0035]

[0050] The connecting portion of the valve silencer 140 is engaged between the valve body 110 and the supply pipe 120, and the main body 141 is preferably located inside the supply pipe 120.

[0036]

[0051] A connection seat 113 is installed at the discharge port 112 of the valve body 110. The valve silencer 140 is preferably connected to the valve body 110 by being installed on the connection seat 113. Of course, the valve body 110 may be integrally installed so that the valve silencer 140 is installed on the valve body 110.

[0037]

[0052] Hereinafter, a specific installation form of the valve silencer 140 will be described with reference to the drawings.

[0038]

[0053] In the first embodiment as shown in FIG. 1, the valve silencer 140 is installed at the discharge port 112, and the connection portion 142 is welded to the discharge port 112, connected to the discharge port 112 by interference fit, or connected to the discharge port 112 by shrinkage setting of the discharge port 112, and the valve body 110 extends into the discharge pipe 130.

[0039]

[0054] In the second embodiment as shown in FIG. 2, the valve silencer 140 is installed at the supply port 111 of the valve body 110, and the valve silencer 140 is also installed at the discharge port 112 of the valve. The installation form of the valve silencer 140 at the discharge port 112 is the same as that in the first embodiment. The connection portion 142 of the valve silencer 140 at the supply port is installed between the valve body 110 and the supply pipe 120. The supply pipe 120 is welded to the valve body 110, and the main body 141 of the valve silencer 140 extends into the supply pipe 120.

[0040]

[0055] In the third embodiment as shown in FIG. 3, the valve silencer 140 is installed at the discharge port 112, and the discharge port 112 of the valve body 110 is conical. Specifically, a connection seat 113 is installed at the discharge port 112 of the valve body 110. The valve silencer 140 is connected to the valve body 110 by being installed on the connection seat 113. The connection portion 141 of the valve silencer 140 is welded to the connection seat 113, connected to the connection seat 113 by interference fit, or connected onto the connection seat 113 by shrinkage setting of the connection seat 113, and the connection seat 113 extends into the discharge pipe 130.

[0041]

[0056] In the fourth embodiment as shown in FIG. 4, a first valve silencer 140 is installed at the supply port 111 of the valve body 110, and a valve silencer 140 is installed at the discharge port 112 of the valve body 110. The connection parts 142 of the valve silencer 140 all include a first connection part 1421 presenting an annular shape and a second connection part 1422 presenting a tubular shape. The second connection part 1422 of the valve silencer 140 at the supply port 111 is bonded to the inner wall of the supply pipe 120, and the second connection part 1422 of the valve silencer 140 at the discharge port 112 is bonded to the inner wall of the valve body 110, so that the valve silencer 140 does not swing laterally. By installing deformation protrusions on the supply pipe 120 and the discharge pipe 130, the second connection part 1422 of the valve silencer 140 is fixed, and further the valve silencer 140 is fixed.

[0042]

[0057] The features of each technology in the above-described embodiments can be arbitrarily combined. For the sake of brevity of description, not all possible combinations of the features of each technology in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, all should be considered within the scope described in this specification.

[0043]

[0058] The above-described embodiments merely show some embodiments of the present application. Although the description is relatively specific and detailed, it should not be understood as limiting the scope of the claims of the present application. It should be noted that for those skilled in the art, some modifications and improvements are possible without departing from the idea of the present application, and all of these belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. An electronic expansion valve, comprising: a main body having a receiving chamber with one end open, a plurality of through holes communicating with the receiving chamber being formed in a side wall, an extending direction of the main body being inclined or perpendicular to an extending direction of the through holes, and a bottom being closed, the main body presenting a funnel shape with an extending length longer than an opening diameter; a connecting portion installed at the opening of the main body, presenting an annular shape, extending from the opening toward the outside of the main body, and having an outer diameter larger than a diameter of the opening; a valve silencer, wherein the through holes are inclined or perpendicular to the side wall and are formed toward an axis of the main body; a valve body having a supply port and a discharge port; a supply pipe connected to the supply port; a discharge pipe connected to the discharge port; wherein the valve silencer is installed at the supply port and the discharge port; the electronic expansion valve.

2. The electronic expansion valve according to claim 1, wherein the through holes of the valve silencer are inclined so as to gradually separate from one end of the opening from inside the receiving chamber toward the outside.

3. The electronic expansion valve according to claim 1, wherein the plurality of through holes are distributed at equal intervals in an extending direction of the main body.

4. The electronic expansion valve according to claim 1, further comprising a first silencer installed at the supply port and a second silencer installed at the discharge port.

5. The electronic expansion valve according to claim 4, wherein a connecting portion of the first silencer is engaged between the valve body and the supply pipe, and the main body is located inside the supply pipe.

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