JP2022535640A - Valve silencer and its electronic expansion valve - Google Patents

Abstract

A valve silencer (140) includes a body (141) having a feed side (143) and a drain side (144) placed oppositely. The main body (141) is provided with a plurality of through holes (142). The hole (142) is slanted clockwise or slanted counterclockwise with respect to the axis of the body (141). [Selection drawing] Fig. 10

Description

[001] This application takes precedence over a Chinese patent application numbered 201920883988.9, filed on June 13, 2019, entitled "Valve silencer and its electronic expansion valve" , the entire contents of which are incorporated into this application by reference.

[002] The present application relates to the technical field of cooling devices, and in particular to valve silencers and electronic expansion valves.

[003] A valve is a control member in a fluid pipeline system, and performs functions such as throttle reduction, opening and closing, and flow control, and is usually applied to pipeline systems such as cooling systems and heating systems.

[004] In a general valve, when the medium in the valve is in a gas-liquid mixed state in the operating state, large bubbles often exist in the medium, and the large bubbles burst during the flow process, generating noise. Cheap.

[005] According to various embodiments of the present application, a valve silencer is provided that includes a body.

[006] The main body has a liquid supply side and a liquid drainage side that are installed facing each other, and a plurality of through holes are formed in the main body, and the through holes communicate the liquid supply side and the liquid drainage side. and the plurality of through holes are inclined clockwise or counterclockwise with respect to the axis of the main body.

[007] The above-mentioned valve silencer has a plurality of through holes provided in the main body, so that the medium is blocked when hitting the valve silencer, separated into a plurality of pieces when flowing through the valve silencer, and a plurality of through holes are formed. By arranging the holes so as to be inclined with respect to the axis of the main body and by aligning the inclination directions of the through holes, the medium passing through the valve silencer is rotated by the guides of the through holes. is further mixed after entering the drain side to remove large-diameter bubbles and make the bubble size uniform, thus reducing noise in the flow process and achieving the effect of muffling.

[008] In one embodiment, the plurality of through-holes are evenly distributed along the circumferential direction of the main body, and each through-hole is spirally arranged with respect to the axis of the main body. This allows the medium to exhibit regular rotation after flowing through the valve silencer, reducing the cross-impingement of multiple fluids and controlling noise, while the noise caused by the rotation of the fluid is small. Since noise increases when multiple fluids collide violently, when increasing the rotation of the fluids themselves to enhance the mixing effect, noise generation can be suppressed by reducing crossing impacts between fluids as much as possible.

[009] In one embodiment, the cross-sectional area of the through-hole gradually decreases from the liquid supply side to the liquid discharge side. As a result, when the medium flows through the through-hole, the cross-sectional area of the through-hole gradually decreases, so that blocking of the medium by the through-hole can be reduced.

[010] In one embodiment, the cross-section of the through-hole is any one of circular, elliptical, square, triangular, trapezoidal, or fan-shaped.

[011] In one embodiment, a conical protrusion is provided on one surface facing the center point of the main body and the liquid supply side. As a result, when the medium on the liquid supply side flows to the liquid discharge side, the conical protrusion functions as a guide, making the medium flow smoother.

[012] In an embodiment, the thickness of the body ranges from 3 mm to 5 mm. This increases the flow stroke of the medium in the through-holes and thus enhances the guiding effect of the through-holes on the medium.

[013] The present application further provides an electronic expansion valve including the valve silencer described above.

[014] The above electronic expansion valve is equipped with a valve silencer to eliminate noise during the operation of the electronic expansion valve, thus enhancing the user's comfort.

[015] In one embodiment, the electronic expansion valve further includes a valve body, a supply pipe, and a discharge pipe, the supply pipe and the discharge pipe are each connected to the valve body, and the valve silencer comprises the supply pipe and/or It is installed at one end of the discharge pipe close to the valve body. As a result, when bubbles of different sizes exist in the medium before entering the valve body, a valve silencer is installed in the supply pipe to remove large bubbles in the medium before entering the valve body, In addition to reducing noise, the medium is partially vaporized through the throttle of the electronic expansion valve, and a valve silencer can be installed in the discharge pipe to remove large bubbles in the medium.

[016] In one embodiment, the valve body has a supply port and a discharge port, the supply pipe is connected to the supply port, the discharge pipe is connected to the discharge port, and the valve silencer is the supply port and/or the discharge port. Installed at the exit.

[017] In one embodiment, the valve silencers are provided at the supply port and the discharge port, and the silencer positioned at the supply port is in contact with the end surface of one end of the supply pipe. By installing in this way, the structure becomes simple.

[018] In one implementation, the outlet is flared and the diameter of one end closer to the valve silencer is larger than the diameter of one end remote from the valve silencer. This installation reduces the flow resistance of the medium entering the valve silencer.

[019] In one implementation, the supply tube and/or the discharge tube are provided with connections, the supply tube connection being an interference fit in the supply port and the discharge tube connection being an interference fit in the discharge port. This can reinforce the strength of the discharge pipe, the supply pipe, and the valve body.

[020] Reference may be made to one or more drawings to better describe the embodiments and/or illustrations of the invention disclosed herein. Additional details and illustrations to illustrate the drawings are not intended to limit the scope of any of the disclosed inventions, the presently described embodiments and/or illustrations, and the currently understood best mode of these inventions. should not be considered as

[021] FIG. 2 is a cross-sectional view of an electronic expansion valve in a first embodiment provided in the present application; [022] Fig. 2 is a cross-sectional view of an electronic expansion valve in a second embodiment provided in the present application; [023] Fig. 3 is a cross-sectional view of an electronic expansion valve in a third embodiment provided in the present application; [024] FIG. 4 is a cross-sectional view of an electronic expansion valve in a fourth embodiment provided in the present application; [025] FIG. 2 is an enlarged view of a portion A in FIG. 1; [026] FIG. 2 is an enlarged view of a portion B in FIG. 2; [027] FIG. 2 is a structural schematic diagram of a valve silencer in the first embodiment provided in the present application; [028] Fig. 2 is a structural schematic diagram of a valve silencer in a second embodiment provided in the present application; [029] FIG. 3 is a structural schematic diagram of a valve silencer in the third embodiment provided in the present application; [030] FIG. 4 is a structural schematic diagram of a valve silencer in the fourth embodiment provided in the present application;

[031] The meanings of the symbols in the drawings are as follows.
[032] 100 electronic expansion valve, 110 valve body, 111 supply port, 112 discharge port, 113 connection seat, 114 opening, 120 supply pipe, 121 connection portion, 130 discharge pipe, 140 valve silencer, 141 main body, 142 through hole , 143 feed side, 144 drain side, 145 conical projection.

[033] To facilitate understanding of the present application, the following provides a more complete description of the present application. This application may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein. Rather, these examples are provided so that the disclosure of the present application may be thorough and complete in understanding.

[034] It should be noted that when an element is said to be "fixed to" another element, it may be placed directly on the other element or there may be intervening elements. When an element is considered to be “connected” to another element, it may be directly connected to the other element, or the elements connected in between may be present at the same time.

[035] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The text terminology used in the specification of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[036] The present application provides an electronic expansion valve 100, which is used in a cooling system, is installed between a condenser and an evaporator, and controls conduction and interruption of pipelines, throttles, , such as regulation of the medium flow in the cooling system. In this embodiment, the electronic expansion valve 100 is applied to a stepless variable displacement (stepless frequency conversion) cooling system. The requirements of the cooling system can be well satisfied. In other implementations, the electronic expansion valve 100 may be used in constant capacity cooling systems or other cooling systems.

Specifically, the electronic expansion valve 100 includes a valve body 110, a supply pipe 120, a discharge pipe 130, and a valve silencer 140. The supply pipe 120 and the discharge pipe 130 are connected to the valve body 110, Valve silencer 140 is used to reduce noise during operation of electronic expansion valve 100 .

It should be noted that 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 , and the discharge pipe 130 is connected to the discharge port 112 .

[039] The supply pipe 120 and/or the discharge pipe 130 each have a connection portion 121, the supply port 111 of the valve body 110 is tightly fitted to the connection portion 121 of the supply pipe 120, and the discharge port 112 is connected to the discharge pipe 130. The connection 121 is preferably an interference fit, and the supply tube 120 and the discharge tube 130 are preferably secured to the valve body 10 by welding.

[040] The valve silencer 140 is preferably installed at one end of the supply pipe 120 and/or the discharge pipe 130 near the valve body 110. /or may be located at the outlet 112; The medium at the supply port 111 of the electronic expansion valve 100 may exhibit a gas-liquid mixture due to imperfect supercooling, and may contain bubbles of different sizes. By installing in the port 111, large bubbles in the medium entering the valve body 110 can be removed, preventing noise caused by large bubbles entering the valve body 110 and bursting, while the electronic expansion valve Part of the medium at the discharge port 112 of 100 is flash-evaporated to a gaseous state after the pressure is reduced by throttling, and the medium at the discharge port 112 is in a gas-liquid mixed state, and bubbles of different sizes are present in the medium, It can be seen that the provision of the valve silencer 140 at the outlet 112 effectively removes large air bubbles to eliminate noise.

[041] The installation method of the valve silencer 140 is flexibly set according to the actual demand, and the specific selectable installation methods include at least the following.

[042] As shown in FIG.

[043] As shown in FIG. 2, in the second embodiment, the valve silencer 140 is installed in the valve supply port 111 and the discharge port 112. As a preferred connection, the valve silencer 140 at the supply port 111 is Abutted by the supply pipe 120, thus fixing the silencer 140, the structure is simple, the valve silencer 140 in the discharge pipe 130 is the same as the installation method in the first embodiment.

[044] As shown in FIG. 3, in the third embodiment, the valve silencer 140 is installed at the supply port 111 and the discharge port 112 of the valve body 110, and the valve silencer 140 at the supply port 111 is connected to the supply pipe. 120 to fix the valve silencer 140 by shrinking and deforming the pipe wall of the discharge pipe 130 , and the valve silencer 140 at the discharge port 112 is installed in the discharge pipe 130 to deform the discharge pipe 130 . to fix the valve silencer 140 .

[045] As shown in FIG. 4, in the fourth embodiment, the valve body 110 is provided with a connection seat 113, the connection seat 113 is provided with a discharge port 112, and the discharge port 112 is flared. , the diameter of one end of the outlet 112 close to the valve silencer 140 is larger than the diameter of one end remote from the valve silencer 140, and the valve silencer 140 is installed in the flared outlet 112. be done.

[046] An opening 114 is further opened in the connection seat 113, the opening 114 communicates with the discharge port 112, the opening 114 is flared, and the diameter of one end of the opening 114 near the valve silencer 140 is It has a smaller diameter than the one end remote from the valve silencer 140 .

[047] The medium first flows out through the opening 114 to the discharge port 112, and in the process of flowing, the medium gradually decreases in cross-sectional area and then gradually increases to function as a guide for the flow of the medium. It can be understood that the flow resistance can be reduced.

[048] As shown in Figures 7 to 10, the valve silencer 140 includes a body 141 having a feed side 143 and a drain side 144 located opposite each other. has a plurality of through holes 142 that penetrate the main body 141, the through holes 142 communicate between the liquid supply side 143 and the liquid drain side 144, and the plurality of through holes 142 are aligned with respect to the axis of the main body 141. can be installed tilted in the clockwise direction or tilted in the counterclockwise direction.

By installing a plurality of through holes 142 in the main body 141 , the medium is blocked when hitting the valve silencer 140 and separated into a plurality of lines when flowing through the valve silencer 140 so that the plurality of through holes 142 are inclined clockwise or counterclockwise, the medium passing through the through-hole 142 of the valve silencer 140 is rotated by the guide of the through-hole 142, so that the refrigerant is drained. It can be seen that it is further mixed after entering the side 144, the number of large bubbles is reduced, and the size of the bubbles is evenly distributed, thus reducing noise during flow and achieving the effect of muffling.

[050] The through-hole 142 has a structure inclined clockwise or counterclockwise around the axis of the main body 141. Specifically, the through-hole 142 has a spiral shape. It may be a slanted slanted hole. The structure in which the through-holes 142 are installed is for forming a rotating state in the medium, and it can be understood that the rotation of the medium is achieved by uniformly installing the through-holes 142 so as to be inclined clockwise or counterclockwise.

[051] It is preferable that the plurality of through-holes 142 are uniformly distributed along the circumferential direction of the main body 141, and that each of the through-holes 142 is arranged spirally with respect to the axis of the main body 141. .

[052] With this arrangement, after the medium flows through the valve silencer 140, it exhibits a regular rotation, reducing cross impingement of multiple lines of fluid and controlling noise. The noise caused by the rotation of the fluid is small, but the noise caused by the violent collision of multiple fluids increases. Therefore, if the rotation of the fluid itself is increased to increase the mixing effect, the cross impact between the fluids should be reduced as much as possible. By doing so, the generation of other noise can be suppressed.

[053] The cross-sectional area of the through-hole 142 preferably decreases gradually from the liquid supply side 143 to the drain side 144, which is advantageous for medium flow. As the medium flows through the through-holes 142, the cross-sectional area of the through-holes 142 gradually decreases and can function as a guide for the flow of the medium. It can be understood that a step is formed on the inner wall of the hole 142 to block the flow of the medium.

[054] The cross section of through-hole 142 is preferably any one of circular, elliptical, quadrangular, triangular, trapezoidal, and fan-shaped. The present application does not limit the cross-sectional shape of the through-hole 142 , and it can be understood that the cross-sectional area of the through-hole 142 may gradually decrease from the liquid supply side 143 to the drain side 144 .

[055] Referring to FIG. 10, a conical projection 145 is preferably installed in a direction toward the center point of the main body 141 and the liquid supply side 143. As shown in FIG. It can be understood that by installing in this way, a guide structure is formed on the liquid supply side 143 of the main body 141 to guide the flow of the medium, thereby making the flow of the medium smoother.

[056] The range of thickness of the main body 141 along the axial direction is preferably 1 mm to 5 mm.

[057] Furthermore, the thickness range of the main body 141 is 3 mm to 5 mm. It can be understood that by increasing the thickness of the body 141, the thickness of the through-hole 142 is also increased to enhance the guiding effect on the medium, thus increasing the rotation of the medium and enhancing the removal effect for large bubbles. .

[058] The valve silencer 140 described above is not limited to use with the electronic expansion valve 100 provided in the present application, and may be installed in other valves such as, for example, thermal expansion valves or solenoid valves in cooling systems. It can be understood that the valve silencer 140 can also be installed in the ball valve in the heating system or in the valve of other pipeline system, which can achieve the effect of silencing.

[059] The present application provides four preferred valve silencer 140 embodiments.

[060] As shown in FIG. 7, FIG. 7 is a structural schematic diagram of the valve silencer 140 in the first embodiment provided in the application. Moreover, it gradually decreases from the liquid supply side 143 to the liquid discharge side 144 .

[061] As shown in FIG. 8, FIG. 8 is a structural schematic diagram of the valve silencer in the second embodiment provided in the present application. and gradually decreases from the liquid supply side 143 to the drain side 144 .

[062] As shown in FIG. 9, FIG. 9 is a structural schematic diagram of the valve silencer 140 in the third embodiment provided in the present application. , and gradually decreases from the liquid supply side 143 to the drain side 144 .

[063] As shown in FIG. 10, FIG. 10 is a structural schematic diagram of the valve silencer 140 in the fourth embodiment provided in the present application. In addition, the diameter gradually decreases from the liquid supply side 143 to the liquid discharge side 144, and a conical protrusion 145 is provided at the center of the main body 141 for guiding.

[064] The technical features of the above-described embodiments can be combined arbitrarily. However, unless there is an inconsistent combination of features of these techniques, all should be considered within the scope described herein.

[065] The foregoing examples are merely illustrative of some embodiments of the present application, and while the descriptions are relatively specific and detailed, they do not limit the scope of the claims of the application. should not be understood as For those skilled in the art, various modifications and improvements are possible without departing from the spirit of the present application, and they all fall within the protection scope of the present application. Therefore, the scope of protection of the patent of this application shall be subject to the attached claims.

Claims (12)

a main body having a liquid supply side and a liquid discharge side facing each other; and a plurality of through-holes are formed in the main body, and the through-holes are connected to the liquid supply side and the liquid discharge side. A valve silencer communicating with a liquid side, and wherein the plurality of through-holes are installed inclined clockwise or counterclockwise with respect to the axis of the main body. The plurality of through-holes according to claim 1, wherein the plurality of through-holes are evenly distributed along the circumferential direction of the body, and each of the through-holes is spirally arranged with respect to the axis of the body. valve silencer. 2. The valve silencer according to claim 1, wherein a cross-sectional area of said through hole gradually decreases from said liquid supply side to said liquid discharge side. 2. The valve silencer according to claim 1, wherein the cross-section of said through-hole is one of circular, elliptical, square, triangular, trapezoidal, and fan-shaped. 2. The valve muffler according to claim 1, wherein a conical protrusion is installed on one surface of the main body toward the center point and the liquid supply side. The valve silencer of claim 5, wherein the body thickness ranges from 3mm to 5mm. An electronic expansion valve comprising a valve silencer according to any one of the preceding claims 1-6. further comprising a valve body, a supply pipe and a discharge pipe, wherein the supply pipe and the discharge pipe are respectively connected to the valve body, and the valve silencer is connected to the valve body of the supply pipe and/or the discharge pipe 8. Electronic expansion valve according to claim 7, located at one end near. The valve body has a supply port and a discharge port, the supply pipe is connected to the supply port, the discharge pipe is connected to the discharge port, and the valve silencer is connected to the supply port and/or the discharge port. 9. The electronic expansion valve of claim 8, wherein the electronic expansion valve is installed in a 10. The valve silencer according to claim 9, wherein the valve silencer is provided at the supply port and the discharge port, and the silencer located at the supply port is in contact with an end surface of one end of the supply pipe. electronic expansion valve. 11. The electronic expansion valve of claim 10, wherein the outlet is flared and the diameter of one end closer to the valve silencer is larger than the diameter of one end remote from the valve silencer. . A connection is provided on the supply tube and/or the discharge tube, the connection of the supply tube being an interference fit with the supply opening and the connection of the discharge tube being an interference fit with the discharge opening. Item 10. The electronic expansion valve according to item 9.

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