JP7429707B2 - Valve silencer and its electronic expansion valve - Google Patents

Description

[001] This application is a priority application of a Chinese patent application filed on June 13, 2019, the application number is No. 201920883988.9, and the title of the invention is "Valve silencer and its electronic expansion valve." and the entire contents of which are incorporated by reference into this application.

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

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

[004] When a typical valve is in operation, when the medium inside the valve is in a gas-liquid mixed state, large air bubbles often exist in the medium, and during the flow process, the large air bubbles burst and generate noise. Cheap.

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

[006] The main body has a liquid supply side and a liquid drain side that are installed opposite 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 drain side. The plurality of through holes are installed to be inclined clockwise or counterclockwise with respect to the axis of the main body.

[007] The above-mentioned valve silencer has multiple through holes installed in the main body, so that when the medium hits the valve silencer, it is blocked, and when it flows through the valve silencer, it is separated into multiple pieces. By installing the holes so as to be inclined with respect to the axis of the main body, and by making the inclination direction of each through hole match, the medium passing through the valve muffler is rotated by the guide of the through hole, and therefore the medium After entering the drainage side, it is further mixed to remove the large diameter bubbles and make the bubble size uniform, thus reducing noise in the flow process and achieving the effect of sound deadening.

[008] In one embodiment, the plurality of through holes are uniformly distributed along the circumferential direction of the main body, and each through hole is arranged in a spiral with respect to the axis of the main body. This allows the medium to exhibit regular rotation after flowing through the valve muffler, reducing the cross-collision of multiple fluids and controlling the noise, while the noise caused by the rotation of the fluid is small, but When multiple fluids collide violently, the noise increases, so when increasing the rotation of the fluids themselves to enhance the mixing effect, the generation of noise can be suppressed by reducing the cross-impact between the 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. Thereby, when the medium flows through the through hole, the cross-sectional area of the through hole gradually becomes smaller, so that blocking of the medium due to the through hole can be reduced.

[010] In one embodiment, the cross section of the through hole is one of a circle, an ellipse, a square, a triangle, a trapezoid, or a sector.

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

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

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

[014] The electronic expansion valve described above is equipped with a valve muffler to eliminate noise during the operation process of the electronic expansion valve, thereby increasing user comfort in use.

[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 is connected to the supply pipe and/or the discharge pipe. It is installed at one end of the discharge pipe near the valve body. As a result, if there are bubbles of different sizes in the medium before entering the valve body, by installing a valve muffler in the supply pipe, large bubbles in the medium before entering the valve body can be removed. In addition to reducing noise, some of the medium is vaporized through the throttle of the electronic expansion valve, and large bubbles in the medium can be removed by installing a valve muffler in the discharge pipe.

[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 connected to the supply port and/or the discharge port. installed at the exit.

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

[018] In one embodiment , the outlet is flared and has a diameter at one end closer to the valve muffler that is larger than a diameter at one end remote from the valve muffler. This arrangement reduces the flow resistance of the medium entering the valve silencer.

[019] In one embodiment , the supply pipe and/or the discharge pipe are provided with a connection, the supply pipe connection being a tight fit in the supply port, and the discharge pipe connection being a tight fit in the discharge port. . Thereby, the rigidity of the discharge pipe, the supply pipe, and the valve body can be reinforced.

[020] To better describe embodiments and/or illustrations of the invention disclosed herein, reference may be made to one or more drawings. Additional details and illustrations to illustrate the drawings do not limit the scope of any of the disclosed inventions, the presently described embodiments and/or illustrations, and the best mode of these inventions as currently understood. should not be thought of as something that does.

[021] FIG. 1 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. 3 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 portion A in FIG. 1. [026] FIG. 3 is an enlarged view of portion B in FIG. 2. [027] FIG. 1 is a structural schematic diagram of a valve muffler in a first embodiment provided in the present application. [028] FIG. 2 is a structural schematic diagram of a valve muffler in a second embodiment provided in the present application. [029] FIG. 3 is a structural schematic diagram of a valve muffler in a third embodiment provided in the present application. [030] FIG. 3 is a structural schematic diagram of a valve muffler in a 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 section, 130 discharge pipe, 140 valve silencer, 141 main body, 142 through hole , 143 liquid supply side, 144 liquid drainage side, 145 conical protrusion.

[033] To facilitate understanding of the present application, the present application is described more fully below. However, this application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these examples are provided in order to provide a thorough and complete understanding of the disclosure of this application.

[034] Note that when an element is said to be "fixed" to another element, it may be placed directly on top of the other element, or there may be an element placed between. When an element is considered to be "connected" to another element, it may be directly connected to the other element, or there may be simultaneously connected elements in between.

[035] Unless otherwise defined, 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 pertains. The textual terminology used in the specification of the present application is for the purpose of describing specific embodiments only and is not intended to limit 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 is used to control conduction and cutoff of pipelines, , performs functions such as adjusting the flow rate of the medium in the cooling system. In this embodiment, the electronic expansion valve 100 is applied to a stepless variable capacity (stepless frequency conversion) cooling system, and the electronic expansion valve 100 has a wide adjustment range of medium flow rate, fast adjustment response, and stepless variable capacity. The requirements of the cooling system can be satisfactorily satisfied. In other embodiments , electronic expansion valve 100 may be used in constant volume cooling systems or other cooling systems.

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

[038] As should be explained, the valve body 110 is provided with 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 part 121, the supply port 111 of the valve body 110 is tightly fitted into the connection part 121 of the supply pipe 120, and the discharge port 112 is tightly fitted to the connection part 121 of the supply pipe 130. Preferably, the supply pipe 120 and the discharge pipe 130 are tightly fitted into the connecting portion 121 and fixed to the valve body 10 by welding.

[040] The valve muffler 140 is preferably installed at one end of the supply pipe 120 and/or the discharge pipe 130 near the valve body 110. Of course, the valve muffler 140 is installed at one end of the supply pipe 120 and/or the discharge pipe 130 near the valve body 110. /or may be installed at the outlet 112. The medium at the supply port 111 of the electronic expansion valve 100 may be incompletely supercooled and exhibit a gas-liquid mixed state, and there may be bubbles of different sizes; By installing it in the port 111, large air bubbles in the medium entering the valve body 110 can be removed, and noise caused by large air bubbles entering the valve body 110 and bursting can be prevented, while the electronic expansion valve After the medium at the outlet 112 of 100 is throttled down and the pressure is lowered, part of the medium is flash-evaporated to a gas state, and the medium at the outlet 112 is in a gas-liquid mixed state, and bubbles of different sizes are present in the medium. It can be seen that by providing the valve muffler 140 at the outlet 112, large air bubbles can be effectively removed to eliminate noise.

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

[042] As shown in FIG. 1, in the first embodiment, the valve muffler 140 is installed within the discharge port 112 of the valve body 110, and the discharge port 112 of the valve body 110 is located within the discharge pipe 130.

[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, and as a preferred connection form, the valve silencer 140 in the supply port 111 is installed in the valve supply port 111 and the discharge port 112. Abutted by the supply pipe 120, thus fixing the muffler 140, the structure is simple, and the valve muffler 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 installed in the supply pipe. The valve muffler 140 is fixed by shrinking and deforming the pipe wall of the discharge pipe 130, and the valve muffler 140 at the discharge port 112 is installed within the discharge pipe 130 and deforming the discharge pipe 130. to fix the valve silencer 140.

[045] As shown in FIG. 4, in the fourth embodiment, a connection seat 113 is installed on the valve body 110, a discharge port 112 is opened in the connection seat 113, and the discharge port 112 has a flared shape. The diameter of one end of the outlet 112 near the valve muffler 140 is larger than the diameter of the end farther from the valve muffler 140, and the valve muffler 140 is installed at 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 has a flared shape, and the diameter of one end of the opening 114 near the valve silencer 140 is as follows. The diameter is smaller than the diameter of one end remote from the valve muffler 140.

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

[048] As shown in FIGS. 7 to 10, the valve silencer 140 includes a main body 141, and the main body 141 has a liquid supply side 143 and a liquid drain side 144, which are disposed opposite to each other. A plurality of through-holes 142 are formed through the main body 141, and the through-holes 142 communicate the liquid supply side 143 and the liquid drainage side 144, and the plurality of through-holes 142 are arranged along the axis of the main body 141. It can be installed tilted clockwise or tilted counterclockwise.

[049] By installing a plurality of through holes 142 in the main body 141, the medium is blocked when it hits the valve muffler 140, and is separated into a plurality of pieces when flowing through the valve muffler 140. By installing them so that they are both tilted clockwise or counterclockwise, the medium passing through the through hole 142 of the valve muffler 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, reducing the number of large bubbles and uniformly distributing the bubble size, thus reducing noise during flow and achieving the effect of sound deadening.

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

[051] Preferably, the plurality of through holes 142 are uniformly distributed along the circumferential direction of the main body 141, and each through hole 142 is arranged in a spiral shape with respect to the axis of the main body 141. .

[052] With this arrangement, after the medium flows through the valve muffler 140, it exhibits regular rotation, reducing cross-collision of multiple fluids, and controlling noise. Note that although the noise caused by the rotation of the fluid is small, the noise caused by the violent collision of multiple fluids increases, so when increasing the mixing effect by increasing the rotation of the fluid itself, it is necessary to reduce the cross-impact between the fluids as much as possible. By doing so, it is possible to suppress the generation of other noises.

[053] It is preferable that the cross-sectional area of the through hole 142 gradually decreases from the liquid supply side 143 to the liquid discharge side 144, which is advantageous for the flow of the medium. When the medium flows through the through-hole 142, the cross-sectional area of the through-hole 142 becomes gradually smaller and can act as a guide for the flow of the medium, and if the cross-sectional area of the through-hole 142 does not gradually become smaller, the through-hole It can be seen that a step is formed on the inner wall of the hole 142, blocking the flow of the medium.

[054] The cross section of the through hole 142 is preferably one of a circle, an ellipse, a quadrangle, a triangle, a trapezoid, or a sector. It can be understood that the present application does not limit the cross-sectional shape of the through-hole 142, and the cross-sectional area of the through-hole 142 should just become gradually smaller from the liquid supply side 143 to the liquid discharge side 144.

[055] Referring to FIG. 10, it is preferable that a conical protrusion 145 is provided at the center point of the main body 141 and in a direction toward the liquid supply side 143. 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 thickness range of the main body 141 along the axial direction is preferably 1 mm to 5 mm.

[057] Further, the thickness of main body 141 is in the range of 3 mm to 5 mm. It can be seen that by increasing the thickness of the main body 141, the thickness of the through-hole 142 can also be increased, which can enhance the guide effect on the medium, thus increasing the rotation of the medium and increasing the removal effect on large bubbles. .

[058] The valve muffler 140 described above is not limited to use in the electronic expansion valve 100 provided in the present application, and may be used in other valves, such as being installed in a thermal expansion valve or a solenoid valve in a cooling system, for example. It can be understood that the valve muffler 140 may also be installed in a ball valve in a heating system or a valve in another pipe system, both of which can achieve the muffling effect.

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

[060] As shown in FIG. 7, FIG. 7 is a structural schematic diagram of a valve muffler 140 in the first embodiment provided in the present application, and in this embodiment, the cross section of the through hole 142 is circular. , and 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 a valve muffler 140 in a second embodiment provided in the present application, and in this embodiment, the cross section of the through hole 142 is triangular or sector-shaped. It gradually becomes smaller from the liquid supply side 143 to the liquid discharge side 144.

[062] As shown in FIG. 9, FIG. 9 is a structural schematic diagram of a valve muffler 140 in a third embodiment provided in the present application, and in this embodiment, the cross section of the through hole 142 is rectangular. , and gradually decreases from the liquid supply side 143 to the liquid discharge side 144.

[063] As shown in FIG. 10, FIG. 10 is a structural schematic diagram of a valve muffler 140 in a fourth embodiment provided in the present application, and in this embodiment, the cross section of the through hole 142 is rectangular. , and gradually becomes smaller from the liquid supply side 143 to the liquid discharge side 144, and a conical protrusion 145 for guiding is installed at the center of the main body 141.

[064] The features of each technology in the embodiments described above can be combined arbitrarily, and for the sake of brevity, all possible combinations of the features of each technology in the embodiments described above have been described. However, unless there is a contradiction in the combination of features of these technologies, all should be considered within the scope described in this specification.

[065] Although the examples described above merely illustrate some embodiments of the present application, and the description thereof is relatively specific and detailed, this does not limit the scope of the claims of the application. It should not be understood as something that does. Note that for those skilled in the art, several modifications and improvements can be made without departing from the spirit of the present application, and all of these 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 scope of the appended claims.

Claims (12)

The main body includes a disc-shaped main body, the main body has a liquid supply side and a liquid drain side that are installed opposite each other, and a plurality of through holes are opened in the main body, and the through holes are connected to the liquid supply side. The liquid side and the liquid drain side are communicated, and the plurality of through holes are installed to be inclined clockwise toward the liquid drain side with respect to the axis of the main body when viewed from the liquid supply side, Or a valve silencer installed tilted in a counterclockwise direction. The plurality of through holes are uniformly distributed along the circumferential direction of the main body, and each of the through holes is arranged in a spiral with respect to the axis of the main body. valve silencer. The valve muffler according to claim 1, wherein the cross-sectional area of the through hole gradually decreases from the liquid supply side to the liquid discharge side. The valve muffler according to claim 1, wherein the cross section of the through hole is one of a circle, an ellipse, a quadrangle, a triangle, a trapezoid, and a sector. The valve muffler according to claim 1, wherein a conical protrusion is installed at the center point of the main body and on one side facing the liquid supply side. A valve muffler according to claim 5, wherein the thickness of the body ranges from 3 mm to 5 mm. An electronic expansion valve comprising the valve muffler according to any one of claims 1 to 6. The valve muffler further includes a valve body, a supply pipe, and a discharge pipe, the supply pipe and the discharge pipe are respectively connected to the valve body, and the valve muffler is connected to the valve body of the supply pipe and/or the discharge pipe. 8. The electronic expansion valve according to claim 7, wherein the electronic expansion valve is installed at one proximal end. 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 muffler has a supply port and/or a discharge port. The electronic expansion valve according to claim 8, which is installed in the electronic expansion valve. The valve muffler is provided at the supply port and the discharge port, and the valve muffler located at the supply port is in contact with an end surface of one end of the supply pipe. Electronic expansion valve as described. 11. The electronic expansion valve according to claim 10, wherein the outlet is flared, and a diameter at one end closer to the valve muffler is larger than a diameter at one end remote from the valve muffler. . The supply pipe and/or the discharge pipe are provided with a connection part, the connection part of the supply pipe is tightly fitted in the supply port, and the connection part of the discharge pipe is tightly fitted in the discharge port. Item 9. The electronic expansion valve according to item 9.

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