KR102376051B1 - Throttle device and heat exchange system having same - Google Patents

Abstract

In the throttle device and the heat exchange system having the same, the throttle device includes a fixed base (20) having an air inlet hole (21) and an accommodation chamber (23) communicating with the air inlet hole (21), and the accommodation chamber (23) and a throttle structure 30 movably installed therein. According to the throttle device and the heat exchange system having the same, the problem that the throttle device in the prior art controls the flow rate of the fluid is effectively solved.

Description

Throttle device and heat exchange system having same

The present invention relates to the field of valves, and more particularly, to a throttle device and a heat exchange system having the same.

In the heat exchange system, a throttle device must be used, and most currently use a capillary tube as a throttle device or an electronic expansion valve as a throttle device. Most of the existing throttle devices are throttle valves whose valve opening varies according to the difference between the coolant pressure on the condenser side (primary side) and the coolant pressure on the evaporator side (secondary side). It is equipped with a spring that applies a force against the needle in the direction the valve closes.

An object of the present invention is to provide a throttle device that solves the problem that the throttle device in the prior art controls the flow rate of a fluid, and a heat exchange system having the same.

In order to achieve the above object, according to one aspect of the present invention, there is provided a throttle device including a fixed base having an air inlet hole and an accommodation chamber communicating with the air inlet hole, and a throttle structure movably installed in the accommodation chamber .

Preferably, the throttle device further includes a pipe having an inner chamber, the fixed base is fixedly installed in the inner chamber, and further includes an air outlet hole communicating with the receiving chamber, and both the air inlet hole and the air outlet hole communicate with the inner chamber and the throttle structure includes a first throttle part and a second throttle part, and the first throttle part is inserted into the air inlet hole until the flow rate of gas flowing into the accommodation chamber reaches a predetermined value, and the gas flows into the air inlet hole can be reduced, and the second throttle part is inserted into the air outlet hole to reduce gas flowing into the air outlet hole.

Preferably, the throttle device further includes a plug installed in the air outlet hole portion to block the air outlet hole, and an elastic structure installed between the plug and the throttle structure and providing elasticity to the throttle structure to move toward the air inlet hole, The plug has a vent hole communicating with both the accommodation chamber and the inner chamber, and the second throttle part may be inserted into the vent hole to throttle the gas flowing into the vent hole.

Preferably, the throttle structure further includes a connecting column provided with a first throttle portion and a second throttle portion at both ends, respectively, and having a first ventilation structure for passing gas, wherein the gas is introduced into the air inlet hole After passing through the first ventilation structure, it is discharged into the inner room from the ventilation hole.

Preferably, the first ventilation structure is a communication slot or a through hole extending along the axial direction of the connecting column, or the first ventilation structure is a groove portion helically installed along the axis of the connecting column.

Preferably, the elastic structure is a spring, and the plug has a protruding structure on the surface facing the throttle structure, and one end of the spring is fitted to the outside of the protruding structure, and the other end of the spring is in contact with the connecting column to provide elasticity to the connecting column. do.

Preferably, the throttle device further includes a stopper installed in the air discharge hole portion, the stopper having a position limiting portion positioned between the elastic structure and the wall of the accommodating chamber to limit the axial movement of the throttle structure.

Preferably, the stopper includes a connecting portion connected to the position limiting portion, the connecting portion being installed between the fixed base and the plug and being positioned and stopped by the fixed base, the position limiting portion having a plate structure or an arcuate structure.

Preferably, the throttle structure includes a connecting sleeve, a first connecting section that is inserted into the connecting sleeve and connected to the connecting sleeve and connected to the first throttle unit, and the other end of the connecting sleeve is inserted into the connecting sleeve to be connected to the connecting sleeve and connected to the second throttle unit. It further includes a second connection section, a second ventilation structure is provided in the first connection section, and a third ventilation structure communicates with the second ventilation structure in the second connection section, wherein the gas is introduced into the air inlet hole After passing through the third ventilation structure and the second ventilation structure in turn, it is discharged from the ventilation hole into the inner room.

Preferably, the throttle structure further includes a third connection section connected to the first throttle part and a fourth connection section connected to the second throttle part, wherein the third connection section has an accommodating groove, and is connected to the accommodating groove and the accommodating chamber. It has a fourth ventilation structure that all communicate, and the fourth connection section is inserted into the accommodation groove to be fixedly connected to the accommodation groove, and a fifth ventilation structure that communicates with both the accommodation groove and the accommodation chamber and communicates with the fourth ventilation structure. The gas is introduced into the air inlet hole, passes through the fourth ventilation structure and the fifth ventilation structure in turn, and then is discharged from the ventilation hole into the inner room.

Preferably, the first throttle portion has a first conical structure, the size of at least a portion of the first conical structure gradually increases in a direction from the air inlet hole to the air outlet hole, the second throttle portion has a second conical structure, and the air inlet The size of at least a portion of the second conical structure in a direction from the ball to the air outlet hole is gradually reduced.

Preferably, the throttle device includes a pipe having an inner chamber, a fixed base fixedly installed in the inner chamber, and a throttle structure movably installed in the accommodation chamber, wherein the fixed base includes an air inlet hole, an air outlet hole and an air inlet hole and air outlet A receiving chamber communicating with the ball is provided, both the air inlet hole and the air outlet hole are in communication with the inner chamber, and a position limiting part coupled to the pipe and the fixed base is installed so that the pipe and the fixed base are mutually fixed, and the pipe and the fixed base are installed. A circulation passage is provided between the bases, and both ends of the circulation passage communicate with the inner chamber.

Preferably, the position limiting portion includes a ring-shaped concave portion provided in the pipe and an engaging groove provided on the outer wall surface of the fixed base, and the ring-shaped concave portion is tightly fitted into the engaging groove.

Preferably, the ring-shaped recess is formed by pressing the pipe.

Preferably, both the ring-shaped recess and the engaging groove are closed annular.

Preferably, a fluid groove is provided on the inner wall surface of the pipe and/or the outer wall surface of the fixed base, and the fluid groove forms a flow passage.

Preferably, a fluid groove is installed in the fixed base, and the fluid groove includes a first fluid groove located on one side of the engagement groove and a second fluid groove located on the other side of the engagement groove, the first fluid groove and the second fluid groove are all communicated with the coupling groove.

Preferably, the first fluid groove penetrates from the engaging groove to the end of the fixing base.

Preferably, the second fluid groove penetrates from the engaging groove to the end of the fixing base.

Preferably, the extending directions of the first fluid groove and the second fluid groove are the same as the axial direction of the pipe, or both the first fluid groove and the second fluid groove are notches provided on both sides of the coupling groove.

Preferably, the throttle device includes a valve chamber, an inlet, and a valve seat provided with a valve port, the valve port communicates with the valve chamber and the inlet, and a guide member, a valve needle, and an elastic body are installed in the valve chamber, and the valve needle is a guide Penetrating the member, the elastic body drives the valve needle to move in the closing direction of the valve port, the guide member is provided with a connection passage for communicating the valve chambers at both ends of the guide member, and an opening at one end of the connection passage is provided by the guide member is located on one end face of the , and the opening of the other end of the connecting passage is located on the other end face of the guide member.

Preferably, the valve needle is provided with a guide section penetrating the guide member, and the length of the guide member is smaller than the length of the guide section.

Preferably, a protrusion is installed on the circumferential side wall of the valve needle, the protrusion is located at one end away from the valve port of the guide member, and when the valve port is closed, the elastic body is in a free state and the protrusion and the guide member face each other A gap is formed between the sections.

Preferably, the connecting passage includes an external ventilation groove installed on the outer wall of the guide member, or includes a ventilation hole installed on the guide member, or includes an internal ventilation groove installed on the inner wall of the guide member.

Preferably, the connecting passage extends along the axial direction of the valve needle.

Preferably, the flow area of the connecting passage is not smaller than the flow area of the valve port and is constant.

Preferably, a communication member for maintaining the opening of the valve port is installed in the valve port portion of the valve chamber, the communication member contacts the valve needle and separates the valve needle and the valve port, and the communication member communicates with the valve chamber and the inlet sphere is installed.

Preferably, the communication member extends along the circumferential direction of the valve port, the communication port passes through the peripheral side wall of the communication member, and the communication member is further provided with a through hole through which the valve stopper passes, the through hole being aligned with the valve port communicate

Preferably, a communication groove for communicating the valve chamber and the inlet is provided on the side wall of the valve port, the opening of one end of the communication groove is located at one end of the valve port, and the opening of the other end of the communication groove is located at the other end of the valve port.

Preferably, the valve needle is provided with a control passage, the opening of one end of the control passage is located at the top end of the valve needle to maintain communication with the inlet, and the opening of the other end of the control passage is located on the side wall of the valve needle, Maintain communication with the valve chamber.

According to another aspect of the present invention, there is provided a heat exchange system including the above-described throttle device.

According to another aspect of the present invention, there is provided a heat exchange system including a heat exchange body and the above-described throttle device installed on the heat exchange body.

According to the technical solution of the present invention, the fluid flows into the accommodation chamber from the air inlet hole of the throttle device, and the throttle structure is movably installed in the accommodation chamber, so that the throttle device can control the flow rate of the fluid. According to the technical solution of the present invention, it is possible to effectively solve the problem of controlling the flow rate of the fluid by the throttle device in the prior art.

The drawings constituting a part of the present application are for a preferred understanding of the present invention, and exemplary embodiments of the present invention and description thereof are for interpreting the present invention, and do not limit the present invention.
1 is a cross-sectional view showing Embodiment 1 of a throttle device according to the present invention.
FIG. 2 is a front view showing the throttle structure of the throttle device in FIG. 1 .
3 is a plan view showing the throttle structure of FIG. 2 .
4 is a cross-sectional view showing a second embodiment of the throttle device according to the present invention.
Fig. 5 is a cross-sectional view showing another angle of the throttle device in Fig. 4;
FIG. 6 is a plan view showing the throttle device of FIG. 4 .
7 is a cross-sectional view showing a third embodiment of the throttle device according to the present invention.
Fig. 8 is a cross-sectional view showing another angle of the throttle device in Fig. 7;
9 is a front view showing the throttle structure of Example 4 of the throttle device according to the present invention.
10 is a view showing the structure of Example 5 of the throttle device according to the present invention.
11 is an enlarged view of a portion A of the throttle device of FIG. 10 .
12 is a structural exemplary view of the first structure of the fixed base of the throttle device of FIG.
13 is a structural exemplary view of the second structure of the fixed base of the throttle device of FIG.
FIG. 14 is a structural exemplary view of the third structure of the fixed base of the throttle device of FIG. 10 .
15 is a structural exemplary diagram of a fourth structure of the fixed base of the throttle device of FIG. 10 .
FIG. 16 is a structural exemplary view of the first structure of the head of the throttle structure of the throttle device of FIG. 10 .
17 is a structural exemplary view of the throttle structure of FIG. 16 at another angle.
18 is a structural exemplary view of the first structure of the valve needle of the throttle structure of the throttle device of FIG.
19 is a structural exemplary view of the valve needle of the throttle structure of FIG. 18 at another angle.
20 is a structural exemplary diagram of a second structure of the head of the throttle structure of the throttle device of FIG. 10;
21 is a structural exemplary view of the second structure of the valve needle of the throttle structure of the throttle device of FIG.
22 is a structural exemplary view of the third structure of the head of the throttle structure of the throttle device of FIG. 10;
23 is a cross-sectional view of the head of the throttle structure of FIG. 22;
24 is a cross-sectional view of Example 6 of the present invention.
25 is a perspective view of a guide member in Example 6 of the present invention.
26 is an exemplary view of a valve needle in Examples 6 and 7 of the present invention.
Fig. 27 is a perspective view of a valve seat in Example 7 of the present invention;
28 is a cross-sectional view of Example 7 of the present invention.
Fig. 29 is a perspective view of a guide member in Example 7 of the present invention;
30 is a perspective view of Example 8 of the present invention.
Fig. 31 is a perspective view of a guide member in Example 8 of the present invention;
Fig. 32 is a perspective view of a valve needle in Example 8 of the present invention;
33 is a perspective view of Example 9 of the present invention.
Fig. 34 is a perspective view of a communicating member in a ninth embodiment of the present invention;

It should be noted that the embodiments in the present application and features in the embodiments can be combined with each other in a situation that does not contradict each other. Hereinafter, the present invention will be described in detail with reference to the drawings and by way of examples.

Unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs.

In the present invention, azimuth terms such as "upper, down" used in the absence of a description to the contrary usually refer to the direction shown in the drawings, or refer to a direction relative to a vertical, vertical, or gravitational direction. Likewise, for convenience of understanding and description, "left and right" refer to the left and right shown in the drawings, and "inside, outside" refers to the inside and outside against the outline of each member itself. is not intended to limit the present invention.

In order to solve the problem that the throttle device in the prior art cannot control the flow rate value flowing through the throttle device, the present application provides a throttle device and a heat exchange system having the same.

Example 1

As shown in FIG. 1 , the throttle device includes a pipe 10 , a fixed base 20 and a throttle structure 30 . Here, the pipe 10 has an inner chamber 11 . The fixed base 20 is fixedly installed in the inner chamber 11, and the receiving chamber ( 23), and both the air inlet hole 21 and the air outlet hole 22 communicate with the inner chamber 11 . The throttle structure 30 is movably installed in the accommodation chamber 23 , and includes a first throttle part 31 and a second throttle part 32 . Here, the first throttle part 31 is inserted into the air inlet hole 21 to reduce the gas flowing into the air inlet hole 21 until the flow rate of the gas flowing into the accommodation chamber 23 reaches a predetermined value. and the second throttle part 32 is inserted into the air outlet hole 22 to reduce gas flowing into the air outlet hole 22 .

According to the technical solution of this embodiment, the throttle structure 30 is movably installed in the accommodation chamber 23 , and the first throttle part 31 and the second throttle part 32 are installed in the accommodation chamber 23 . The first throttle part 31 of the throttle structure 30 is inserted into the air inlet hole 21 until the received force reaches a balance, so that the gas flowing into the air inlet hole 21 can be reduced and the second throttle part ( 32) is inserted into the air outlet hole 22 to reduce the gas flowing into the air outlet hole 22, so that the first throttle part 31 and the second throttle part 32 are installed in the receiving chamber of the fixed base 20 (23) The flow rate of the gas flowing through the throttle device is adjusted to reach a predetermined value by controlling the flow rate of the gas flowing into the inside. For this reason, the flow rate value through which the throttle device flows through the throttle device can be adjusted through joint control of the first throttle part 31 and the second throttle part 32 to satisfy different production and processing demands The problem that the throttle device cannot adjust the flow rate value flowing through the throttle device has been solved.

1 , the throttle device further includes a plug 40 and an elastic structure 50 . Here, the plug 40 is installed in the air discharge hole 22 part to block the air discharge hole 22 , and has a ventilation hole 41 , and the ventilation hole 41 includes the accommodation chamber 23 and the inner chamber 11 . ) and the second throttle part 32 is inserted into the vent hole 41 to throttle the gas flowing into the vent hole 41 . The elastic structure 50 is installed between the plug 40 and the throttle structure 30 , and provides elasticity to the throttle structure 30 to move toward the air inlet hole 21 . In this way, during the operation of the throttle device, the first throttle part 31 and the second throttle part 32 of the throttle structure 30 are operated under the action of the gas until the force applied to the throttle structure 30 reaches a balance. When moving in the accommodation chamber 23 and realizing the throttle action for the air inlet 21 and the vent 41 by the throttle structure 30, the gas flow rate value discharged from the vent hole 41 is a predetermined value. value, and the flow rate (maximum flow rate) control by the throttle device can be realized.

Specifically, when gas flows into the accommodation chamber 23 from the air inlet hole 21 and moves in the direction of the air outlet hole 22 by pushing the throttle structure 30 during the operation of the throttle structure, the throttle structure 30 is The elastic structure 50 compresses the elastic structure 50 and applies elasticity to the throttle structure 30 so that the throttle structure 30 moves in the direction of the air inlet hole 21 to accommodate the throttle structure 30 ( 23), the flow rate value of the gas discharged from the vent hole 41 reaches a predetermined value when the throttle structure 30 achieves a balance in the force received under the joint action of the gas propulsion force and the elasticity.

1 to 3 , the throttle structure 30 further includes a connecting post 33 , and the first throttle part 31 and the second throttle part 32 are each of the connecting post 33 . Installed at both ends, the connecting column 33 is provided with a first ventilation structure 331 for passing the gas. Here, the gas flows into the air inlet hole 21 , passes through the first ventilation structure 331 , and then is discharged from the ventilation hole 41 into the inner chamber 11 . In this way, the gas is introduced into the accommodation chamber 23 from the air inlet hole 21, and the flow rate value of the gas discharged from the vent hole 41 during the movement of the throttle structure 30 reaches a predetermined value. . In the above-described process, the gas introduced into the accommodation chamber 23 passes through the first ventilation structure 331 and is discharged from the ventilation hole 41 to ensure a smooth flow of the gas in the throttle structure 30 .

As shown in FIG. 3 , the first ventilation structure 331 is a communication slot extending along the axial direction of the connecting column 33 . In this way, the gas introduced into the accommodation chamber 23 may pass through the communication slot, may be introduced into the vent hole 41 , and may be discharged from the vent hole 41 . The above-described structure is simple in structure and can be easily processed and realized.

However, the structure of the first ventilation structure 331 is not limited thereto. Preferably, the first ventilation structure 331 is a through hole extending along the axial direction of the connecting pillar 33 . The above-described structure is simple in structure and can be easily processed and realized.

In this embodiment, the cross-sectional area of the first vent structure 331 is greater than or equal to the cross-sectional area of the valve port 24 .

As shown in FIG. 1 , the elastic structure 50 is a spring, and the plug 40 has a protruding structure 42 on the surface facing the throttle structure 30 , and one end of the spring is of the protruding structure 42 . It is fitted to the outside and the other end of the spring is in contact with the connecting column 33 to provide elasticity to the connecting column 33 . In this way, due to the above-described configuration, the mounting of the spring on the plug 40 is more stable and does not come off the plug, so that the spring can apply the elasticity to the throttle structure 30 .

Specifically, during the operation of the throttle device, the throttle structure 30 moves in the accommodation chamber 23 under the joint action of the elasticity of the spring and the thrust force of the gas until the force received by the throttle structure 30 reaches a balance. The flow rate of the gas discharged from the vent hole 41 reaches a predetermined value. When the propulsion force (flow rate) of the gas flowing into the air inlet hole 21 does not change, the throttle structure 30 reaches a balance under the action of different balance forces by replacing the spring (changing the elastic modulus of the spring), and the throttle device By changing the flow rate value of gas after adjustment by the

1 , the throttle device further includes a stopper 60 . Here, the stopper 60 is installed in the air discharge hole 22, and has a position limiting part 61 for limiting the axial movement of the throttle structure 30, and the position limiting part 61 has an elastic structure. It is located between 50 and the wall of the accommodation chamber (23). As such, when the gas flow rate introduced from the air inlet hole 21 is large, the throttle structure 30 is pushed so that the gas moves in the vent hole 41 direction, and when the throttle structure 30 compresses the spring, the stopper 60 ) restricts the position and stops the throttle structure 30, so that the throttle structure 30 acts on the spring with an elasticity that exceeds the maximum elasticity of the spring itself, thereby preventing the spring from being compressed (coil merged) and even broken from becoming invalid and improve the structural reliability of the throttle device.

As shown in FIG. 1 , the stopper 60 includes a connection part 62 connected to the position limiting part 61 , and the connection part 62 is installed between the fixing base 20 and the plug 40 and the fixing base The position is limited and stopped by (20), and the position limiting part (61) has an arcuate structure. As such, according to the above-described mounting method, the stopper 60 and the fixed base 20 can be mounted more stably, and the position limiter 61 can position and stop the throttle structure 30 .

Specifically, the position limiting and stopping action of the stopper 60 with respect to the throttle structure 30 is realized by limiting and stopping the connecting post 33 by the surface of the position limiting part 61 facing the connecting post 33 . and prevent the throttle structure 30 from overcompressing the spring.

However, the structure of the position limiter 61 is not limited thereto. Preferably, the position limiting portion 61 has a plate structure. The above-described structure is simple in structure and can be easily processed and realized.

1 and 2, the first throttle part 31 has a first conical structure, and the size of the entire first conical structure in the direction from the air inlet hole 21 to the air outlet hole 22 is It gradually increases, and the second throttle part 32 has a second conical structure, and the overall size of the second conical structure gradually decreases in the direction from the air inlet hole 21 to the air outlet hole 22 . As such, due to the above-described configuration, the first throttle part 31 and the second throttle part 32 can not only throttle the air inlet 21 and the vent 41, but also allow gas to pass through the air inlet hole ( 21) and the vent hole 41, so that the throttle device can be operated normally.

The present application further provides a heat exchange system (not shown), wherein the heat exchange system includes the above-described throttle device. Preferably, the heat exchange system is an air conditioner.

Example 2

The throttle device in the second embodiment is different from the first embodiment in the structure of the throttle structure 30 .

4 to 6 , the throttle structure 30 further includes a connecting sleeve 34 , a first connecting section 35 , and a second connecting section 36 . Here, the first connection section 35 is connected to the first throttle part 31 , and the first connection section 35 is inserted into one end of the connection sleeve 34 to be connected to the connection sleeve 34 . The second connection section 36 is connected to the second throttle part 32 , and the second connection section 36 is inserted into the other end of the connection sleeve 34 to be connected to the connection sleeve 34 . Here, the first connection section 35 has a second ventilation structure 351, and the second connection section 36 has a third ventilation structure 361 communicating with the second ventilation structure 351, The gas is introduced into the air inlet hole 21 , passes through the third ventilation structure 361 and the second ventilation structure 351 in turn, and then is discharged from the ventilation hole 41 into the inner chamber 11 . As such, the structure of the throttle structure 30 can be more simply and easily processed and realized due to the above-described configuration.

Specifically, the first connecting section 35 is inserted into the upper end of the connecting sleeve 34 to be fixedly connected to the end, and the second connecting section 36 is inserted into the upper end of the connecting sleeve 34 and fixed to the end. By being connected, the first connecting section 35 and the second connecting section 36 are fixed to the connecting sleeve 34 , and further, the first throttle part 31 and the second throttle part 32 are connected to the connecting sleeve 34 . connected Here, a gas passage gap is formed between the end of the first connection section 35 facing the second connection section 36 and the end of the second connection section 36 facing the first connection section 35, so that the air inlet hole The gas flowing into the accommodation chamber 23 from 21 passes through the second ventilation structure 351 , the gas passage interval, and the third ventilation structure 361 in order, and then is discharged from the ventilation hole 41 .

Preferably, the second ventilation structure 351 is a communication slot extending along the axial direction of the first connection section 35 . The above-described structure is simple in structure and can be easily processed and realized.

Preferably, the third ventilation structure 361 is a communication slot extending along the axial direction of the first connection section 35 . The structure is simple in structure and can be easily processed and realized.

Example 3

The throttle device in the third embodiment is different from the first embodiment in the structure of the throttle structure 30 .

7 and 8 , the throttle structure 30 further includes a third connection section 37 and a fourth connection section 38 . Here, the third connection section 37 is connected to the first throttle part 31, has an accommodating groove 371, and a fourth ventilation structure communicating with both the accommodating groove 371 and the accommodating chamber 23 ( 372) is provided. The fourth connection section 38 is connected to the second throttle portion 32 , is inserted into the receiving groove 371 and fixedly connected to the receiving groove 371 , and is connected to both the receiving groove 371 and the receiving chamber 23 . and a fifth vent structure 381 in communication with the fourth vent structure 372 connected to the fifth vent structure 381 . Here, the gas is introduced into the air inlet hole 21 , passes through the fourth ventilation structure 372 and the fifth ventilation structure 381 in turn, and then is discharged from the ventilation hole 41 into the inner chamber 11 . As such, the structure of the throttle structure 30 can be more simply and easily processed and realized due to the above-described configuration.

Specifically, the fourth connection section 38 is inserted into the receiving groove 371 of the third connection section 37 and fixedly connected to the wall of the receiving groove 371 , so that the third connection section 37 and the fourth connection section (38) realize the connection. Then, the gas introduced into the accommodating chamber 23 from the air inlet 21 passes through the fourth ventilation structure 372 and the fifth ventilation structure 381 in turn, and then passes through the ventilation hole 41 into the inner chamber 11 . is emitted

Preferably, the fourth connection section 38 is press-fitted to the receiving groove 371 .

Preferably, the fourth connection section 38 is welded to the wall of the receiving groove 371 . As such, due to the above-described connection method, the connection between the third connection section 37 and the receiving groove 371 is more stable and the structural stability of the throttle structure 30 is improved.

In this embodiment, the fourth ventilation structure 372 has a first radial through hole extending along the radial direction of the third connection section 37 and a first axial through hole communicating with the first radial through hole includes Preferably, the fifth ventilation structure 381 includes a second radial through hole extending along a radial direction of the fourth connecting section 38 and a second axial through hole communicating with the second radial through hole. do. Here, the first axial through-hole and the second axial through-hole communicate with each other.

Example 4

The throttle device of the fourth embodiment is different from the first embodiment in the structure of the first ventilation structure 331 .

As shown in FIG. 9 , the first ventilation structure 331 is a groove portion helically installed along the axis of the connecting column 33 . In this way, the gas introduced into the accommodation chamber 23 may pass through the groove portion and may be introduced into the vent hole 41 to be discharged from the vent hole 41 . The above-described structure is simple in structure and can be easily processed and realized.

As described above, according to the above-described embodiment of the present invention, it can be seen that the following technical effects can be realized.

The throttle structure is movably installed in the accommodation chamber, and the first throttle portion of the throttle structure is inserted into the air inlet hole and introduced into the air inlet hole until the force received by the first throttle portion and the second throttle portion in the accommodation chamber reaches a balance. gas can be reduced, the second throttle part is inserted into the air exhaust hole to reduce gas flowing into the air exhaust hole, and the first throttle part and the second throttle part control the flow rate of the gas introduced into the accommodating chamber of the fixed base. Thus, the flow rate of the gas passing through the throttle device reaches a predetermined value. In this way, through the joint control of the first throttle unit and the second throttle unit, the throttle device can adjust the flow rate value that flows through the throttle device, satisfy different production and processing demands, and furthermore, the throttle device in the prior art can provide a throttle device. The problem of not being able to adjust the flow rate value through the device was solved.

10 to 23 , the throttle device of this embodiment includes a pipe 10 , a fixed base 20 , and a throttle structure 30 . The pipe 10 has an inner chamber 11 . The fixed base 20 fixedly installed in the inner chamber 11 includes an air inlet 21 , an air outlet 22 and a receiving chamber 23 communicating with both the air inlet 21 and the air outlet 22 . and, both the air inlet hole 21 and the air outlet hole 22 communicate with the inner chamber 11 . The throttle structure 30 is movably installed in the accommodation chamber 23 . The pipe 10 and the fixed base 20 are provided with position limiting portions coupled to each other so that the pipe 10 and the fixed base 20 can be fixed to each other, and between the pipe 10 and the fixed base 20 is a distribution passage. is provided, and both ends of the circulation passage communicate with the inner chamber 11 .

When the technical solution of this embodiment is applied, when the fluid passes through the throttle device, when the fluid pressure is small and it is not possible to propel the throttle structure 30 to open, in this situation, the fluid flows through the pipe 10 and the fixed base 20 pass through the distribution channels between According to the technical solution of this embodiment, the problem of no flow when the throttle structure is in a blocked position in the process of using the throttle device in the prior art can be effectively solved.

However, not only the gas passes through the air inlet hole 21 , the air outlet hole 22 , and the accommodation chamber 23 , but a liquid or a mixture of gas and liquid may pass through.

11 , in the technical solution of this embodiment, the position limiting part includes a ring-shaped concave part 101 installed on the pipe 10 and a coupling groove 201 installed on the outer wall surface of the fixed base 20 . and the ring-shaped concave portion 101 is tightly fitted into the engaging groove 201 . The coupling structure of the ring-shaped concave portion 101 and the coupling groove 201 is simple and the manufacturing cost is low. Specifically, both the pipe 10 and the fixed base 20 are made of copper or stainless steel. The ring-shaped concave portion 101 is formed by pressing the pipe 10 . At the time of manufacture, the coupling groove 201 is machined on the outer wall surface of the fixed base 20 , the ring-shaped concave portion 101 is not machined in the pipe 10 , and the fixed base 20 is inserted into the pipe 10 . When disposing, a portion of the pipe 10 corresponding to the coupling groove 201 is pressed to fix the pipe 10 and the fixing base 20 as one.

10 to 23, in the technical solution of this embodiment, both the ring-shaped concave portion 101 and the engaging groove 201 are closed annular. The above-described structure is easy to process and has a good bonding effect. At the same height, the ring-shaped concave portion 101 may have a multi-stage configuration, and the coupling groove 201 may also have a multi-stage configuration coupled to the ring-shaped concave portion 101 . In addition, there may be a plurality of ring-shaped concave portions 101 , and each ring-shaped concave portion 101 is installed at intervals along the axial direction of the pipe 10 , and the coupling groove 201 is in the ring-shaped concave portion 101 . installed correspondingly.

12 to 15, in the technical solution of this embodiment, the fluid groove 202 is installed on the inner wall surface of the pipe 10 and/or the outer wall surface of the fixed base 20, and the fluid groove (202) to form a distribution passage. In this embodiment, the fluid groove 202 is provided on the outer wall surface of the fixed base 20 . The structural form of the fluid groove 202 may be various, and FIGS. 12 to 15 each represent different structures of the fluid groove 202 . The fluid groove 202 is installed in the fixed base 20, and the fluid groove 202 includes a first fluid groove located on one side of the coupling groove and a second fluid groove located on the other side of the coupling groove, and the first fluid Both the groove and the second fluid groove communicate with the engaging groove. However, the tight coupling between the ring-shaped concave portion 101 and the engaging groove 201 is realized by the top of the side wall of the engaging groove 201 and the inner wall surface of the ring-shaped concave portion 101, A gap is formed between the inner wall surface and the outer wall surface of the coupling groove 201, and the fluid may pass through the gap. Here, the first fluid groove and the second fluid groove may be installed to be displaced, and the drawing shows a situation in which the first fluid groove and the second fluid groove are installed to correspond to each other. As shown in FIG. 13 , the first fluid groove penetrates from the coupling groove to the end of the fixing base 20 , and the second fluid groove penetrates from the coupling groove to the end of the fixing base 20 . As shown in FIG. 14 , the first fluid groove and the second fluid groove are penetrated. 15, both the first fluid groove and the second fluid groove are notches provided on both sides of the coupling groove. The extending directions of the first fluid groove and the second fluid groove are the same as the axial direction of the pipe 10 . Here, the first fluid groove may be a notch and the second fluid groove may have a long groove structure in which the extending direction is the same as the axial direction of the pipe.

According to the present embodiment, there is further provided a heat exchange system including a heat exchange body and a throttle device installed on the heat exchange body. The throttle device is the throttle device described above.

Example 6

24 to 26, the throttle valve of the embodiment of the present invention includes a valve seat 1-2 mounted in a valve tube 1-1, and both ends of the valve tube 1-1 are The position of the valve seat 1-2 in the valve tube 1-1 is fixed through cross-sectional contraction, and a groove 1-201 having a rectangular cross-section in at least two places on the outer wall of the valve seat 1-2 This is installed, and the valve tube (1-1) further fixes the position of the valve seat (1-2) by reducing or hitting the outer diameter corresponding to the groove (1-201), and the valve seat (1- 2) is provided with a valve chamber 1-202, an inlet 1-204, and a valve port 1-203. The valve chamber 1-202 is for allowing a medium (gas or liquid) to pass through the valve seat 1-2, and the inlet 1-204 guides the medium to flow into the valve chamber 1-202. For this purpose, the inlet (1-204) has a flared shape and can effectively reduce noise caused by the medium, and the valve port (1-203) communicates the valve chamber (1-202) and the inlet (1-204) to guide the media. The medium may flow along a direction from the inlet 1-204 toward the valve chamber 1-22, and may flow along a direction from the valve chamber 1-202 toward the inlet 1-204.

A guide member (1-3), a valve needle (1-4) and an elastic body (1-5) are installed in the valve chamber (1-202), and the guide member (1-3) is provided in the valve chamber (1-202). is welded to the inside of the, and the valve needle (1-4) passes through the center hole (1-301) of the guide member (1-3) and is inserted into the valve port (1-203), and the valve needle (1-4) is provided with a guide section (1-401) penetrating the guide member (1-3), and the length of the guide member (1-3) is smaller than the length of the guide section (1-401), so that the guide member It is possible to reduce the pinching phenomenon of the valve needle (1-4) as (1-3) is too long and deformed. A compression spring (that is, the spring described above) is used as the elastic body 1-5, and the valve needle 1-4 is driven by the elastic body 1-5 to move the valve port 1-203 in the closing direction. Realizes control of the flow rate in the valve. The guide member (1-3) is provided with a connecting passage (1-302) for communicating both ends of the guide member (1-3), the opening of one end of the connecting passage (1-302) is the guide member (1-3) ) and the opening of the other end of the connecting passage (1-302) is located on the other end of the guide member (1-3).

A protrusion 1-402 is installed on the peripheral side wall of the valve needle 1-4, and the diameter of the protrusion 1-402 is larger than the diameter of other parts of the valve needle 1-4 and the valve needle 1 In -4), it is the part with the largest diameter. The protrusion 1-402 is located on one side away from the valve port 1-203 of the guide member 1-3, and when the valve port 1-203 is closed, that is, of the valve needle 1-4 When the closed section is in contact with the valve port 1-203, the elastic body 1-5 is in a free state, and the elastic body 1-5 is located in the original length position or the extended position to attach to the valve needle 1-4. Without applying a force in the direction of closing the valve port 1-203, the valve needle 1-4 closes the valve port 1-203 under the action of the media pressure on both sides, and the A gap is formed between the mutually facing end surfaces of the guide member 1-3 to ensure a gap between the valve needle 1-4 and the valve port 1-203 under the action of the elastic body 1-5, and It is possible not only to keep the port 1-203 open, but also to ensure a smooth flow of the connecting passageway 1-302 and to avoid pinching the valve needle 1-4.

The connecting passage (1-302) includes an external ventilation groove installed on the outer wall of the guide member (1-3), and surrounds a perfect passage through which the medium passes by the external ventilation groove and the side wall of the valve chamber (1-202), The openings of the external ventilation grooves are located on one end face of the guide member 1-3 toward the valve port 1-203 and one end face away from the valve port 1-203, respectively, and the external ventilation groove is located on the valve needle It extends along the axial direction of (1-4), and the medium passes through the guide member (1-3) in the shortest path corresponding to the flow direction of the medium, thereby increasing the passage speed of the medium and reducing the noise caused by the medium. And since the connecting passage (1-302) extends along the axial direction of the valve needle (1-4), in the process of moving the valve needle (1-4), the valve needle (1-4) is connected to the connecting passage (1-302) When the medium passes through the valve port 1-203 and the connection passage 1-302 without being in contact and the circulation area of the connection passage 1-302 is constant, it is not affected by the valve needle 1-4. A smooth flow can be ensured.

Example 7

27 to 29, in the embodiment of the present invention, the connecting passages 1-302 include vent holes installed in the guide members 1-3, and the openings of the vent holes are respectively formed in the guide member 1-302. 3) is located on one side of the end face toward the valve port (1-203) and one side away from the valve port (1-203), and the vent hole extends along the axial direction of the valve needle (1-4). It is different from Example 6. The extension direction of the vent hole corresponds to the flow direction of the medium, so that the medium passes through the guide member 1-3 on the shortest path to increase the passage speed of the medium and reduce the noise caused by the medium. And the circulation area of the connection passage (1-302) is constant, so it may not be affected by the valve needle (1-4).

A communication groove 1-205 for communicating the valve chamber 1-202 and the inlet 1-204 is provided on the side wall of the valve port 1-203, and an opening at one end of the communication groove 1-205 is provided. is located at one end of the valve port 1-203 and the opening of the other end of the communication groove 1-205 is located at the other end of the valve port 1-203. A communication groove (1-205) and an outer wall of the valve needle (1-4) surround a complete passage through which the medium passes, and the communication groove (1-205) extends along the axial direction of the valve port (1-203). The medium passes through the guide member 1-3 in the shortest path to increase the speed of the medium passing and reduce noise caused by the medium. The medium passes through the communication groove 1-205 and enters the valve chamber 1-202 from the inlet 1-204 to ensure that the valve port 1-203 is always in the open state, whereby the medium flows in the forward direction. It can pass through the throttle valve in both directions opposite to the throttle.

Example 6 may be referred to for other structures not described.

Example 8

30 to 32, in the embodiment of the present invention, the connection passage (1-302) includes an internal ventilation groove formed in the inner wall of the guide member (1-3), the internal ventilation groove and the valve needle ( The outer wall of the 1-4) surrounds the complete passage through which the medium passes, and the opening of the internal ventilation groove has a cross section of one side facing the valve port 1-203 of the guide member 1-3 and the valve port 1-203, respectively. ) is different from Example 6 in that it is located in a cross section on one side away from it. The ventilation groove extends along the axial direction of the valve needle (1-4) and corresponds to the flow direction of the medium, so that the medium passes through the guide member (1-3) in the shortest path to increase the passage speed of the medium and noise caused by the medium reduce And the circulation area of the connection passage (1-302) is constant, so it may not be affected by the valve needle (1-4).

A control passage (1-404) is installed in the valve needle (1-4), and the opening of one end of the control passage (1-404) is located at the top end of the flow control section (1-403) and the inlet (1-204) ), the two openings of the other end of the control passage (1-404) are located on the side wall of the valve needle (1-4) and communicate with the valve chamber (1-202). In the operation of the throttle valve, the flow control section 1-403 of the valve needle 1-4 is always located in the valve port 1-203, and the medium passes through the control passage 1-404 to the inlet 1-403. 204 from the valve chamber 1-202. Due to this, even when the valve port 1-203 is closed, the circulation of the medium in the throttle valve is ensured, thereby ensuring that the medium can pass through the throttle valve in both the forward and opposite directions.

Example 6 may be referred to for other structures not described.

Example 9

33 and 34, in the embodiment of the present invention, the communication member 1 for opening the valve port 1-203 in the portion of the valve chamber 1-202 close to the valve port 1-203. -6) is installed, and the communicating member (1-6) is in contact with the valve needle (1-4) and the valve needle (1-4) is always separated between the valve needle (1-4) and the valve port (1-203). ) and the valve port (1-203) is different from the sixth embodiment in that it is separated. A communication port 1-601 for communicating the valve chamber 1-22 and the inlet 1-204 is provided in the communication member 1-6, and the communication port 1-601 is connected to the communication member 1- 6), the communication member 1-6 extends along the circumferential direction of the valve port 1-203, and passes the valve needle 1-4 through the communication member 1-6 A through hole (1-602) is installed for the ), it flows into the valve chamber 1-22 to ensure that the valve port 1-203 is always in an open state, so that the medium can pass through the throttle valve in both the forward and opposite directions.

Example 6 may be referred to for other structures not described.

As described above, the present invention provides a throttle valve, a guide member is installed in the throttle valve, and the length of the guide member is shorter than the length of the guide section on the valve needle, so the guide member is deformed or the size is not correct. It is possible to effectively prevent the needle from being pinched or unable to slide smoothly, thereby improving the reliability and stability of the throttle valve operation.

However, in Examples 6 to 9 and Examples 1 to 5, the names used are different but refer to the same parts. Specifically, the valve tube 1-1 is the pipe 10, the valve seat 1-2 is the fixed base 20, the groove 1-201 is the coupling groove 201, and the valve chamber 1 -202 may be referred to as the accommodation chamber 23 , the valve port 1-203 may be referred to as a valve port 24 , and the inlet 1-204 may be referred to as an air inlet hole 21 .

The guide member divides the valve chamber into two parts, and the connection passage opened in the guide member communicates the two parts of the valve chamber, which is advantageous for the medium to flow smoothly during operation, and the distribution area of the connection passage is larger than the distribution area of the valve port. As the flow rate of the medium during cursor flow is completely determined by the size of the valve port, the operational effectiveness of the valve port is ensured.

A communication member or communication groove is installed in the valve port portion of the valve seat to maintain the open state of the valve port, and to keep the valve port open so that the throttle valve can smoothly pass the medium even when the pressure is low. and ensure the flow rate at low pressure of the throttle valve. Correspondingly, a control passage is also provided in the valve needle to ensure that the medium passes through the throttle valve even at low pressure or when the valve port is completely closed, thereby ensuring the flow rate of the throttle valve when it is completely closed.

The elastic body pushes the valve needle to move toward the valve port to close the valve port, and a gap is formed between the valve needle and the valve port so that the medium in the throttle valve passes while the elastic body is in its original length. When the valve port is closed, the elastic body is in an extended state, and it drives the valve needle to move in the direction of opening the valve port. It improves the operational stability of the throttle valve by ensuring that it can pass through, and preventing the system in which the throttle valve is installed from collapsing.

However, the above-described embodiments are only a part, not all, of the embodiments of the present invention. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art in situations that do not require creative labor fall within the protection scope of the present invention.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments rather than limiting the exemplary embodiments of the present application. Unless clearly indicated in the upper and lower descriptions, the singular forms used herein also refer to the plural forms, and when "includes" and/or "inclusive" is used herein, a feature, step, action, element, component and/or indicates that a combination of these exists.

It should be noted that the terms "first", "second", etc. used in the specification, claims, and above-mentioned drawings of the present application do not refer to a specified order or precedence order, but to distinguish similar objects. It should be understood that these numbers may be interchanged so that the embodiments of the present application described herein may be practiced in an order other than the illustrated or described order.

The above description is not intended to limit the present invention to preferred embodiments of the present invention, and various modifications and changes can be made to the present invention by those skilled in the art. All modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention fall within the protection scope of the present invention.

10: pipe 11: inner chamber
101: ring-shaped recessed portion 20: fixed base
21: air inlet 22: air outlet
23: receiving chamber 24: valve port
201: coupling groove 202: fluid groove
30: throttle structure 31: first throttle part
32: second throttle part 33: connecting column
331: first ventilation structure 34: connecting sleeve
35: first connection section 351: second ventilation structure
36: second connection section 361: third ventilation structure
37: third connection section 371: accommodation home
372: fourth ventilation structure 38: fourth connection section
381: fifth ventilation structure 40: plug
41: ventilation hole 42: protruding structure
50: elastic structure 60: stopper
61: position limiting part 62: connection part
1-1: valve tube 1-2: valve seat
1-201: groove 1-202: valve chamber
1-203: valve port 1-204: inlet
1-205: communication groove 1-3: guide member
1-301: Center Hall 1-302: Connection Aisle
1-4: valve needle 1-401: guide section
1-402: projection 1-403: flow control section
1-404: control passage 1-5: elastic body
1-6: communication member 1-601: communication port
1-602: through hole

Claims (32)

delete A fixed base 20 having an air inlet 21 and a accommodating chamber 23 communicating with the air inlet 21,
A throttle structure (30) movably installed in the accommodation chamber (23), and
comprising a pipe (10) having an inner chamber (11);
The fixed base 20 is fixedly installed in the inner chamber 11 and further includes an air outlet hole 22 communicating with the accommodation chamber 23 , the air inlet hole 21 and the air outlet hole (22) are all in communication with the inner chamber (11),
The throttle structure 30 includes a first throttle part 31 and a second throttle part 32 , and the first throttle part 31 and the second throttle part 32 operate until the flow rate of the gas flowing into the accommodation chamber 23 reaches a predetermined value. The part 31 is inserted into the air inlet hole 21 to reduce gas flowing into the air inlet hole 21 , and the second throttle part 32 is inserted into the air outlet hole 22 to make the Throttle device, characterized in that it is possible to reduce the gas flowing into the air outlet hole (22). 3. The method of claim 2,
A plug 40 installed in the air discharge hole 22 to block the air discharge hole 22, and
It is installed between the plug 40 and the throttle structure 30 and further includes an elastic structure 50 that provides elasticity to the throttle structure 30 to move toward the air inlet 21 side,
The plug 40 has a vent hole 41 communicating with both the accommodation chamber 23 and the inner chamber 11 , and the second throttle part 32 is inserted into the vent hole 41 and the A throttle device, characterized in that it is possible to throttle the gas flowing into the vent hole (41). 4. The method of claim 3,
The throttle structure 30 further includes a connecting post 33 having a first ventilation structure 331 for passing the gas, and the first throttle part 31 at both ends of the connecting post 33 , respectively. ) and the second throttle part 32 are installed, and the gas flows into the air inlet hole 21 and passes through the first ventilation structure 331 and then passes through the ventilation hole 41 into the inner chamber ( 11) A throttle device, characterized in that it is discharged within. 5. The method of claim 4,
The first ventilation structure 331 may be a communication slot or a through hole extending along the axial direction of the connecting pillar 33 , or the first ventilation structure 331 may be a spiral along the axis of the connecting pillar 33 . A throttle device, characterized in that it is a groove installed with a 5. The method of claim 4,
The elastic structure 50 is a spring, and the plug 40 has a protruding structure 42 on a surface facing the throttle structure 30 , and one end of the spring is fitted outside the protruding structure 42 . installed, and the other end of the spring is in contact with the connecting post (33) to provide the elasticity to the connecting post (33). 4. The method of claim 3,
Further comprising a stopper (60) installed in the air discharge hole (22) portion,
The stopper (60) is positioned between the elastic structure (50) and the wall of the accommodation chamber (23) and includes a position limiting part (61) for limiting the axial movement of the throttle structure (30). throttle device. 8. The method of claim 7,
The stopper 60 includes a connection part 62 connected to the position limiting part 61 , and the connection part 62 is installed between the fixing base 20 and the plug 40 and the fixing base 20 ), and the position limiting part (61) is a plate structure or an arcuate structure, characterized in that the throttle device. 4. The method of claim 3,
The throttle structure 30,
connecting sleeve (34);
A first connection section 35 inserted into one end of the connection sleeve 34 and connected to the connection sleeve 34 and connected to the first throttle part 31, and
It is inserted into the other end of the connection sleeve (34), and is connected to the connection sleeve (34) and further includes a second connection section (36) connected to the second throttle part (32),
A second ventilation structure (351) is provided in the first connection section (35), and a third ventilation structure (361) communicating with the second ventilation structure (351) is provided in the second connection section (36), , the gas is introduced into the air inlet hole 21, passes through the third ventilation structure 361 and the second ventilation structure 351 in turn, and then is discharged from the ventilation hole 41 into the inner chamber 11 A throttle device, characterized in that. 4. The method of claim 3,
The throttle structure 30,
A third connection section 37 connected to the first throttle part 31, and
Further comprising a fourth connection section (38) connected to the second throttle section (32),
The third connection section 37 has an accommodation groove 371 and a fourth ventilation structure 372 communicating with both the accommodation groove 371 and the accommodation chamber 23,
The fourth connection section 38 is inserted into the receiving groove 371 to be fixedly connected to the receiving groove 371, communicated with both the receiving groove 371 and the receiving chamber 23, and the fourth ventilation and a fifth vent structure (381) in communication with the structure (372),
The gas flows into the air inlet 21, passes through the fourth ventilation structure 372 and the fifth ventilation structure 381 in turn, and then is discharged from the ventilation hole 41 into the inner chamber 11 A throttle device, characterized in that. 4. The method of claim 3,
The first throttle part 31 has a first conical structure, and the size of at least a portion of the first conical structure in a direction from the air inlet hole 21 to the air outlet hole 22 gradually increases, and the The second throttle part 32 has a second conical structure, and the size of at least a portion of the second conical structure gradually decreases in a direction from the air inlet hole 21 to the air outlet hole 22 throttle device. A fixed base 20 having an air inlet 21 and an air outlet 22 and an accommodation chamber 23 communicating with both the air inlet 21 and the air outlet 22;
A throttle structure (30) movably installed in the accommodation chamber (23), and
comprising a pipe (10) having an inner chamber (11);
The fixed base 20 is fixedly installed in the inner chamber 11,
Both the air inlet hole 21 and the air outlet hole 22 communicate with the inner chamber 11,
A position limiting part coupled to the pipe 10 and the fixed base 20 is installed so that the pipe 10 and the fixed base 20 are mutually fixed,
A distribution passage is provided between the pipe (10) and the fixed base (20), and both ends of the distribution passage are in communication with the inner chamber (11). 13. The method of claim 12,
The position limiting part includes a ring-shaped recessed part 101 installed in the pipe 10 and a coupling groove 201 installed on the outer wall surface of the fixed base 20, and the ring-shaped recessed part 101 is the coupling groove ( 201) a throttle device, characterized in that it is tightly fitted within. 14. The method of claim 13,
The throttle device, characterized in that the ring-shaped recess (101) is formed by pressing the pipe (10). 14. The method of claim 13,
The throttle device, characterized in that both the ring-shaped recess (101) and the engagement groove (201) are closed annular shapes. 14. The method of claim 13,
A throttle, characterized in that at least one of the inner wall surface of the pipe (10) and the outer wall surface of the fixed base (20) is provided with a fluid groove (202), and the fluid groove (202) forms the distribution passage Device. 17. The method of claim 16,
The fluid groove 202 is installed in the fixed base 20, and the fluid groove 202 includes a first fluid groove located on one side of the coupling groove and a second fluid groove located on the other side of the coupling groove, , wherein the first fluid groove and the second fluid groove communicate with the coupling groove (201). 18. The method of claim 17,
The first fluid groove penetrates from the coupling groove (201) to an end of the fixing base (20). 19. The method according to claim 17 or 18,
The second fluid groove penetrates from the coupling groove (201) to an end of the fixing base (20). 18. The method of claim 17,
Both the extending directions of the first fluid groove and the second fluid groove are the same as the axial direction of the pipe 10 , or both the first fluid groove and the second fluid groove are located on both sides of the coupling groove 201 . A throttle device, characterized in that it is an installed notch. a valve seat having an inlet and a valve chamber communicating with the inlet; and
It includes a valve needle movably installed in the valve chamber,
The valve chamber, the inlet, and the valve port are installed in the valve seat, the valve port communicates with the valve chamber and the inlet, and a guide member, a valve needle, and an elastic body are installed in the valve chamber, the valve needle passing through the guide member, The elastic body drives the valve needle to move in the closing direction of the valve port, and the guide member is provided with a connecting passage for communicating the valve chambers at both ends of the guide member, and an opening at one end of the connecting passage is on one end face of the guide member. and the opening of the other end of the connection passage is located on the other end of the guide member. 22. The method of claim 21,
The valve needle is provided with a guide section penetrating the guide member, and the length of the guide member is smaller than the length of the guide section. 22. The method of claim 21,
A protrusion is installed on the circumferential side wall of the valve needle, the protrusion is located at one end away from the valve port of the guide member, and when the valve port is closed, the elastic body is in a free state and between the protrusion and the opposite end surfaces of the guide member The throttle device, characterized in that the gap is formed. 22. The method of claim 21,
The throttle device, characterized in that the connecting passage includes an external ventilation groove installed on the outer wall of the guide member, or includes a ventilation hole installed on the guide member, or includes an internal ventilation groove installed on the inner wall of the guide member. 25. The method of claim 24,
The throttle device, characterized in that the connecting passage extends along the axial direction of the valve needle. 25. The method of claim 24,
The throttle device, characterized in that the circulation area of the connection passage is constant and not smaller than the circulation area of the valve port. 22. The method of claim 21,
A communication member for maintaining the opening of the valve port is installed in the valve port portion of the valve chamber, the communication member is in contact with the valve needle and separates the valve needle and the valve port, and the communication member has a communication port for communicating the valve chamber and the inlet A throttle device, characterized in that it is installed. 28. The method of claim 27,
The communication member extends along the circumferential direction of the valve port, the communication port passes through the peripheral side wall of the communication member, the communication member is further provided with a through hole through which the valve stopper passes, and the through hole communicates with the valve port in alignment A throttle device, characterized in that. 22. The method of claim 21,
A communication groove for communicating the valve chamber and the inlet is provided on the side wall of the valve port, the opening of one end of the communication groove is located at one end of the valve port, and the opening of the other end of the communication groove is located at the other end of the valve port. throttle device. 22. The method of claim 21,
The valve needle is provided with a control passage, the opening of one end of the control passage is located at the top end of the valve needle to maintain communication with the inlet, and the opening of the other end of the control passage is located on the side wall of the valve needle to form a valve chamber and A throttle device, characterized in that it maintains the communication of 12. A heat exchange system comprising the throttle device according to any one of claims 2 to 11. 21. A heat exchange system comprising a heat exchange body and a throttle device installed on the heat exchange body, wherein the throttle device is the throttle device according to any one of claims 12 to 18 and 20.

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