CN206352659U - A kind of throttle expansion valve - Google Patents
A kind of throttle expansion valve Download PDFInfo
- Publication number
- CN206352659U CN206352659U CN201720027490.3U CN201720027490U CN206352659U CN 206352659 U CN206352659 U CN 206352659U CN 201720027490 U CN201720027490 U CN 201720027490U CN 206352659 U CN206352659 U CN 206352659U
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- conical pipe
- flange disk
- expansion valve
- valve body
- refrigerant
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Abstract
The utility model discloses a kind of throttle expansion valve, including valve body, capillary and evaporator, the end of valve body is provided with diaphragm, and the bottom of diaphragm is provided with valve rod, and valve rod is located in valve body, and the bottom of valve rod is provided with valve ball, and valve body is provided with inlet, it is characterised in that：The first conical pipe is provided with inlet, first conical pipe is provided with the second conical pipe, second conical pipe is symmetrical arranged with the first conical pipe, it is tightly connected between second conical pipe and the first conical pipe, choke block is provided between second conical pipe and the first conical pipe, choke block, which is provided with spigot surface, choke block, is provided with throttle orifice, and throttle orifice is connected with spigot surface.The liquid refrigerant of HTHP is converted into the vaporific hydraulic pressure refrigerant in part by the utility model by throttling action, controls the flow of refrigerant, it is ensured that the outlet of evaporator is entirely gaseous refrigerant, it is ensured that compressor normal work.
Description
Technical field
The utility model belongs to expansion valve technical field, more particularly to a kind of throttle expansion valve.
Background technology
Expansion valve is an important component in refrigeration system, is generally mounted between liquid storage cylinder and evaporator.Expansion valve
Make the liquid refrigerant of middle temperature high pressure turns into the moist steam of low-temp low-pressure by its throttling, and then refrigerant absorbs in evaporator
Heat reaches refrigeration, and expansion valve is changed come control valve flow by the degree of superheat of evaporator end, prevents evaporation
The underutilization of device area and engine knock phenomenon.In the course of the work, air conditioner load increase, hydraulic pressure refrigerant is carried expansion valve in evaporator
Front evaporator is finished, then evaporator outlet refrigerant temperature will be raised, and pressure increase on diaphragm promotes valve rod to increase expansion valve opening
Greatly, the refrigerant flow increase entered in evaporator, refrigerating capacity increase；If air conditioner load reduces, evaporator outlet system
Refrigerant temperature reduces, and with same action principle expansion valve opening is reduced, so as to control the flow of refrigerant.But expansion
Operationally, the outlet of evaporator contains liquid refrigerant to valve, and liquid hammer is produced possibly into compressor, influences compressor operating.
Utility model content
The utility model purpose is above-mentioned technical problem present in solution prior art, and there is provided a kind of throttling expansion
Valve, the vaporific hydraulic pressure refrigerant in part is converted into by throttling action by the liquid refrigerant of HTHP, control refrigerant
Flow, it is ensured that the outlet of evaporator is entirely gaseous refrigerant, it is ensured that compressor normal work.
In order to solve the above-mentioned technical problem, the utility model is adopted the following technical scheme that：
A kind of throttle expansion valve, including valve body, capillary and evaporator, the end of valve body are provided with diaphragm, the bottom of diaphragm
Provided with valve rod, valve rod is located in valve body, and the bottom of valve rod is provided with valve ball, and valve body is provided with inlet, it is characterised in that：At inlet
Provided with the first conical pipe, the first conical pipe is provided with the second conical pipe, and the second conical pipe is symmetrical arranged with the first conical pipe, the second cone
It is tightly connected between shape pipe and the first conical pipe, choke block is provided between the second conical pipe and the first conical pipe, choke block is provided with
Throttle orifice is provided with spigot surface, choke block, throttle orifice is connected with spigot surface；The expansion valve is by throttling action by HTHP
Liquid refrigerant is converted into the vaporific hydraulic pressure refrigerant in part, controls the flow of refrigerant, it is ensured that the outlet of evaporator is entirely
Gaseous refrigerant, it is ensured that compressor normal work.
Further, the first conical pipe be provided with first flange disk, the second conical pipe be provided with second flange disk, second flange disk with
First flange disk is connected, and sealing gasket is provided between second flange disk and first flange disk, is easy to manufacture the first conical pipe and second
Conical pipe, realizes and is tightly connected between the second conical pipe and the first conical pipe.
Further, stud is provided between the bottom of first flange disk and the bottom of second flange disk, stud props up sealing gasket,
The end of stud is provided with nut so that connected between the bottom of first flange disk and the bottom of second flange disk using stud
Connect, in specific install, stud can be laterally passed through to the bottom of first flange disk and the bottom of second flange disk, and twisted with nut
Tightly, installation process is not influenceed by setting height(from bottom).
Further, stud is provided with elastic washer, one of elastic washer located at first flange disk bottom and nut it
Between, another elastic washer is played to first flange disk and second flange disk between the bottom of second flange disk and nut
Protective effect, while improve nut the effect of being critical.
Further, sealing plate is provided between the top of first flange disk and the top of second flange disk, sealing plate is located at close
Fixing bolt, fixing bolt and sealing plate are equipped with the top of the top of packing, the top of first flange disk and second flange disk
It is fixedly connected, realizes and be fixedly connected between the top of first flange disk and the top of second flange disk, while sealing plate plays close
The effect of envelope, reduces the aging action of sealing gasket.
Further, the bottom of sealing plate is provided with fix bar, and the bottom of fix bar is provided with pressing plate, and pressing plate props up sealing gasket, made
Obtain sealing gasket and be close to the top of first flange disk and the top of second flange disk, improve the sealing function of sealing gasket.
The utility model is by adopting the above-described technical solution, have the advantages that：
In the course of the work, air conditioner load changes the utility model, and valve rod is moved up and down in valve body, makes expansion valve opening
Change.The utility model sets the first conical pipe and the second conical pipe, the liquid refrigerant of HTHP at inlet
It is discharged into from the second conical pipe, because the cross-sectional area of the second conical pipe is gradually reduced along liquid refrigerant inflow direction so that
The flow that liquid refrigerant is discharged into reduces, and choke block is provided between the second conical pipe and the first conical pipe, and choke block is provided with
Throttling buffering of some liquid refrigerant in throttle orifice, such second conical pipe in spigot surface is provided with spigot surface, choke block
Switch to vaporific hydraulic pressure refrigerant under effect, refrigerant carries out throttling action in valve body again.The utility model is made by throttling
The vaporific hydraulic pressure refrigerant in part is converted into by the liquid refrigerant of HTHP, the flow of refrigerant is controlled, it is ensured that evaporation
The outlet of device is entirely gaseous refrigerant, it is ensured that compressor normal work.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation of throttle expansion valve of the utility model；
Fig. 2 is the structural representation that is tightly connected between the second conical pipe and the first conical pipe in the utility model；
Fig. 3 is the structural representation of choke block in the utility model.
Embodiment
As shown in Figure 1 to Figure 3, it is a kind of throttle expansion valve of the utility model, including valve body 1, capillary 2 and evaporator 3.
The end of valve body 1 is provided with diaphragm 4, and the bottom of diaphragm 4 is provided with valve rod 5, and valve rod 5 is located in valve body 1, and the bottom of valve rod 5 is provided with valve
Ball 6.Air conditioner load increase, hydraulic pressure refrigerant evaporates in advance in evaporator 3, then the outlet refrigerant temperature of evaporator 3 will rise
Pressure increases on height, diaphragm 4, promotes valve rod 5, increases expansion valve opening, and the refrigerant flow entered in evaporator 3 increases
Plus, refrigerating capacity increase；If air conditioner load reduces, the outlet refrigerant temperature of evaporator 3 reduces, and is made with same action principle
Obtain valve opening to reduce, so as to control the flow of refrigerant.
Valve body 1, which is provided with inlet 7, inlet 7, is provided with the first conical pipe 8, and the first conical pipe 8 is provided with the second conical pipe 9,
Second conical pipe 9 is symmetrical arranged with the first conical pipe 8, is tightly connected between the second conical pipe 9 and the first conical pipe 8.First cone
Shape pipe 8 is provided with first flange disk 13, and the second conical pipe 9 is provided with second flange disk 14, second flange disk 14 and first flange disk 13
Connection, is provided with sealing gasket 15 between second flange disk 14 and first flange disk 13, be easy to the first conical pipe 8 of manufacture and the second taper
Pipe 9, realizes and is tightly connected between the second conical pipe 9 and the first conical pipe 8.The bottom of first flange disk 13 and second flange disk 14
Bottom between be provided with stud 16, stud 16 props up sealing gasket 15, and the end of stud 16 is provided with nut 17 so that first flange disk
It is attached between 13 bottom and the bottom of second flange disk 14 using stud 16, can be horizontal by stud 16 in specific install
Tightened to the bottom for being passed through first flange disk 13 and the bottom of second flange disk 14, and with nut 17, installation process is not installed
The influence of height.Stud 16 is provided with elastic washer 18, and one of elastic washer 18 is located at the bottom of first flange disk 13 and spiral shell
Between mother 17, another elastic washer 18 is played to first flange disk between the bottom of second flange disk 14 and nut 17
13 and the protective effect of second flange disk 14, while improving the effect of being critical of nut 17.The top of first flange disk 13 and second
Sealing plate 19 is provided between the top of ring flange 14, sealing plate 19 is located at the top of sealing gasket 15, the top of first flange disk 13
Fixing bolt 20 is equipped with the top of second flange disk 14, fixing bolt 20 is fixedly connected with sealing plate 19, realizes the first method
It is fixedly connected, while sealing plate 19 plays sealed effect, reduces between the top of blue disk 13 and the top of second flange disk 14
The aging action of sealing gasket 15.The bottom of sealing plate 19 is provided with fix bar 21, and the bottom of fix bar 21 is provided with pressing plate 22, pressing plate 22
Prop up sealing gasket 15 so that sealing gasket 15 is close to the top of first flange disk 13 and the top of second flange disk 14, improve sealing
The sealing function of pad 15.
Choke block 10 is provided between second conical pipe 9 and the first conical pipe 8, choke block 10 is provided with spigot surface 11, choke block
Throttle orifice 12 is provided with 10, throttle orifice 12 is connected with spigot surface 11, choke block 10, adjustment throttling can be changed according to the actual requirements
The diameter in hole 12.
In the course of the work, air conditioner load changes the utility model, and valve rod 5 is moved up and down in valve body 1, drives expansion valve
Degree changes.The utility model sets the first conical pipe 8 and the second conical pipe 9, the liquid system of HTHP at inlet 7
Cryogen is discharged into from the second conical pipe 9, because the cross-sectional area of the second conical pipe 9 gradually subtracts along liquid refrigerant inflow direction
It is small so that the flow that liquid refrigerant is discharged into reduces, and provided with choke block 10 between the second conical pipe 9 and the first conical pipe 8,
Choke block 10, which is provided with spigot surface 11, choke block 10, is provided with throttle orifice 12, some liquid refrigerant in such second conical pipe 9
Switch to vaporific hydraulic pressure refrigerant under the throttling buffering effect of spigot surface 11, refrigerant carries out throttling action in valve body 1 again.
The liquid refrigerant of HTHP is converted into the vaporific hydraulic pressure refrigerant in part, control system by the utility model by throttling action
The flow of cryogen, it is ensured that the outlet of evaporator 3 is entirely gaseous refrigerant, it is ensured that compressor normal work.
Specific embodiment of the utility model is these are only, but technical characteristic of the present utility model is not limited thereto.Appoint
How based on the utility model, to solve essentially identical technical problem, essentially identical technique effect is realized, it is made
Simple change, equivalent substitution or modification etc., are all covered by among protection domain of the present utility model.
Claims (6)
1. a kind of throttle expansion valve, including valve body, capillary and evaporator, the end of the valve body are provided with diaphragm, the diaphragm
Bottom be provided with valve rod, the valve rod is located in valve body, and the bottom of the valve rod is provided with valve ball, and the valve body is provided with inlet,
It is characterized in that：The first conical pipe is provided with the inlet, first conical pipe is provided with the second conical pipe, second cone
Shape pipe is symmetrical arranged with first conical pipe, is tightly connected between second conical pipe and first conical pipe, described
Choke block is provided between second conical pipe and first conical pipe, the choke block is provided with spigot surface, the choke block and set
There is throttle orifice, the throttle orifice is connected with the spigot surface.
2. a kind of throttle expansion valve according to claim 1, it is characterised in that：First conical pipe is provided with first flange
Disk, second conical pipe is provided with second flange disk, and the second flange disk is connected with the first flange disk, second method
Sealing gasket is provided between blue disk and the first flange disk.
3. a kind of throttle expansion valve according to claim 2, it is characterised in that：The bottom of the first flange disk with it is described
Stud is provided between the bottom of second flange disk, the stud props up the sealing gasket, and the end of the stud is provided with nut.
4. a kind of throttle expansion valve according to claim 3, it is characterised in that：The stud is provided with elastic washer, wherein
One elastic washer is between the bottom of the first flange disk and the nut, and another described elastic washer is located at
Between the bottom of the second flange disk and the nut.
5. a kind of throttle expansion valve according to claim 2, it is characterised in that：The top of the first flange disk and described
Sealing plate is provided between the top of second flange disk, the sealing plate is located at the top of the sealing gasket, the first flange disk
Top and the second flange disk at the top of be equipped with fixing bolt, the fixing bolt is fixedly connected with the sealing plate.
6. a kind of throttle expansion valve according to claim 3, it is characterised in that：The bottom of the sealing plate is provided with fixation
Bar, the bottom of the fix bar is provided with pressing plate, and the pressing plate props up the sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720027490.3U CN206352659U (en) | 2017-01-11 | 2017-01-11 | A kind of throttle expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720027490.3U CN206352659U (en) | 2017-01-11 | 2017-01-11 | A kind of throttle expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206352659U true CN206352659U (en) | 2017-07-25 |
Family
ID=59349619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720027490.3U Active CN206352659U (en) | 2017-01-11 | 2017-01-11 | A kind of throttle expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206352659U (en) |
-
2017
- 2017-01-11 CN CN201720027490.3U patent/CN206352659U/en active Active
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