CN203036924U - Bidirectional throttle valve - Google Patents
Bidirectional throttle valve Download PDFInfo
- Publication number
- CN203036924U CN203036924U CN201320034941.8U CN201320034941U CN203036924U CN 203036924 U CN203036924 U CN 203036924U CN 201320034941 U CN201320034941 U CN 201320034941U CN 203036924 U CN203036924 U CN 203036924U
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- CN
- China
- Prior art keywords
- valve
- distance
- seats
- throttle body
- valve seats
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a bidirectional throttle valve which comprises a tubular throttle valve body. Two valve seats are arranged inside the throttle valve body in an airtight matching mode, a valve hole and a sliding rail communicated with the valve hole are arranged inside each valve seat, valve cores are arranged inside the sliding rails in a sliding matching mode, valve core throttle holes are formed in the valve cores, end portion drainage holes matched with the valve cores are formed in one ends, far away from the valve holes, of the sliding rails, horizontal circulating holes are formed on the positions, close to the valve holes, of the sliding rails, ventilating ring grooves communicated with the horizontal circulating holes are arranged between the throttle valve body and the valve seats, and the distance L between the two valve seats is larger than or equal to 0.6 time of the inner diameter d of the throttle valve body. Through the arrangement that the distance L between the two valve seats is larger than or equal to 0.6 time of the inner diameter d of the throttle valve body, fluid is enabled to have a sufficient buffer distance, when the fluid flows out of the ventilating ring groove on one side and enters the valve seats on the other side, the fluid is even in flow regime, cavitation can be effectively relieved, and noise is reduced.
Description
Technical field
The utility model belongs to valve technology field, and concrete is a kind of bidirectional throttling valve that plays throttling action in heat pump type air conditioner.
Background technology
Heat pump type air conditioner mainly comprises compressor, condensing unit, restricting element and evaporimeter, and restricting element is the critical component that determines air conditioner refrigerating, heating performance.
Publication number is that the Chinese patent of CN201583070U discloses a kind of bidirectional throttling valve that plays throttling action in heat pump type air conditioner, this bidirectional throttling valve will have capillary in the restricting element and check valve etc. now and become one, though obtained the effect that reduces manufacturing cost, simplified structure and reduce volume, but also there is the excessive problem of operating noise, causes the comfort of air-conditioning to reduce.
In view of this, the utility model is intended to the structure of existing bidirectional throttling valve is improved, and the bidirectional throttling valve that obtains after the improvement not only has low cost of manufacture, simple in structure and advantage that volume is little, but also can reduce noise, improves comfort.
Summary of the invention
The technical problems to be solved in the utility model is to propose a kind of bidirectional throttling valve, and this bidirectional throttling valve not only has low cost of manufacture, simple in structure and advantage that volume is little, but also can reduce noise, improves comfort.
Realize above-mentioned technical purpose, bidirectional throttling valve of the present utility model, comprise throttle body in a tubular form, be provided with two valve seats with its airtight cooperation in the described throttle body, the slideway that is provided with valve opening in the described valve seat and communicates with described valve opening, interior being slidingly matched with it of described slideway is provided with spool, be provided with the throttling spool hole in the described spool, described slideway is provided with the end conduction hole that cooperates with spool away from an end of valve opening, and the position near valve opening on the slideway is provided with the cross-current through hole, be provided with the ventilation annular groove that communicates with described cross-current through hole between described throttle body and the valve seat, the distance L between described two valve seats is more than or equal to 0.6 times of the described throttle body inner diameter d between two valve seats.
Further, the distance L≤3d between described two valve seats.
Further, the distance L=0.7d-1.5d between described two valve seats.
Further, the distance L=0.75d-1d between described two valve seats.
Further, the internal diameter of described throttle body equals 8.1 ± 0.1mm, the distance L=7 ± 1mm between described two valve seats.
Further, the opposing end of described two valve seats is provided with the screen pack for impurity screening.
Further, described end conduction hole is internal diameter and points to the convergent hole shape that the direction of slideway reduces gradually along valve opening.
Further, described end conduction hole is internal diameter and points to the taper that the direction of slideway reduces gradually along valve opening.
Further, the closing in angle of described end conduction hole equals 45 °-75 °.
Further, the closing in angle of stating the end conduction hole equals 60 ° ± 5 °.
The beneficial effects of the utility model are:
Bidirectional throttling valve of the present utility model, be set to more than or equal to the throttle body inner diameter d 0.6 times by the distance L between two valve seats, after fluid flows through ventilation annular groove between a side valve seat and the throttle body, need carry out throttling through the throttling spool hole that is arranged on the opposite side spool, because the actual internal area of ventilation annular groove is less than the actual internal area of throttle body, fluid is before going out to enter the opposite side valve seat from a side ventilation ring concentrated flow, and the sudden change of actual internal area makes that fluid need be through keeping uniform fluidised form after one section disorder; Because the distance in the existing bidirectional throttling valve between two valve seats is too short, causes fluid to flow into the throttling spool hole in the fluidised form of disorder, cause the serious cavitation erosion in throttling spool hole, and breaking of cavitation bubbles causes noise up to more than 70 decibels; And bidirectional throttling valve of the present utility model is set to more than or equal to the throttle body inner diameter d 0.6 times by the distance L between two valve bodies, make fluid have enough buffer distances, when going out to enter the opposite side valve seat from a side ventilation ring concentrated flow, the fluidised form of fluid is even, can effectively alleviate cavitation erosion, and the reduction noise, and noise can be controlled below 55 decibels; Therefore, bidirectional throttling valve of the present utility model not only has low cost of manufacture, simple in structure and advantage that volume is little, and can also alleviate cavitation erosion, and reduces noise, improves comfort and increases the service life.
Description of drawings
Fig. 1 is the structural representation of the utility model bidirectional throttling valve embodiment;
Fig. 2 is the structural representation of valve seat.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.
As shown in Figure 1, be the structural representation of the utility model bidirectional throttling valve embodiment.The bidirectional throttling valve of present embodiment, comprise throttle body 1 in a tubular form, be provided with two valve seats 2 with its airtight cooperation in the throttle body 1, two valve seat 2 structures are identical and be installed in symmetrically in the throttle body 1, the slideway 4 that is provided with valve opening 3 in the valve seat 2 and communicates with valve opening 3, slideway 4 interior being slidingly matched with it are provided with spool 5, be provided with throttling spool hole 6 in the spool 5, slideway 4 is provided with the end conduction hole 7 that cooperates with spool 5 away from an end of valve opening 3, and the position near valve opening 3 on the slideway 4 is provided with cross-current through hole 8, be provided with distance L between 9, two valve seats 2 of ventilation annular groove that communicate with cross-current through hole 8 between throttle body 1 and the valve seat 2 more than or equal to 0.6 times of throttle body 1 inner diameter d between two valve seats 2.
The bidirectional throttling valve of present embodiment, be set to more than or equal to throttle body 1 inner diameter d 0.6 times by the distance L between two valve seats 2, after fluid flows through ventilation annular groove 9 between a side valve seat 2 and the throttle body 1, need carry out throttling through the throttling spool hole 6 that is arranged on the opposite side spool 5, because the distance L between two valve bodies 2 of present embodiment is more than or equal to 0.6 times of the throttle body inner diameter d, make fluid have enough buffer distances, when entering opposite side valve seat 2 from 9 outflows of side ventilation annular groove, the fluidised form of fluid is even, can effectively alleviate cavitation erosion, and the reduction noise, and noise can be controlled below 55 decibels; Therefore, the bidirectional throttling valve of present embodiment not only has low cost of manufacture, simple in structure and advantage that volume is little, and can also alleviate cavitation erosion, and reduces noise, improves comfort and increases the service life.
Preferably, distance L between two valve seats 2 is smaller or equal to 3 times of throttle body 1 inner diameter d between two valve seats 2, when the distance L between two valve seats 2 during greater than 3 times of throttle body 1 internal diameter, noise does not significantly descend, illustrate that air-flow has been tending towards even, and the distance L between two valve seats 2 is set to 3 times smaller or equal to throttle body 1 inner diameter d, can effectively reduce volume.Further, the distance L=0.7d-1.5d between two valve seats 2 can further reduce noise, and with noise control below 50 decibels.Further, the optimal distance L=0.75d-1d between two valve seats 2 not only can be with noise control below 50 decibels, but also can reduce volume, reduce manufacturing cost.Preferably, the inner diameter d of throttle body equals 8.1 ± 0.1mm, the distance L=7 ± 1mm between two valve seats 2, the inner diameter d=8mm of the throttle body 1 of present embodiment, distance L=7mm between two valve seats 2, namely the distance L between two valve seats 2 is 0.875 times of inner diameter d of throttle body 1.
Preferably, end conduction hole 7 is internal diameter and points to the convergent hole shape that the direction of slideways 4 reduces gradually along valve opening 3, adopts the end conduction hole 7 of this structure, the center of fluid conduction to throttle body 1 further can be reduced noise.Preferably, the closing in angle [alpha] of end conduction hole 7 equals 45 °-75 °, adopts the end conduction hole 7 of this structure to play mild drainage by convection cell.Further, the closing in angle [alpha] of end conduction hole 7 is 60 ° ± 5 °, and the closing in angle [alpha] of the end conduction hole 7 of present embodiment is 60 °, can reduce noise gently equably with the center of air-flow drainage to throttle body 1.The closing in angle of end conduction hole 7 is the tapering of the taper that the length of maximum inner diameter, minimum diameter and the end conduction hole of end conduction hole 7 limits.
Further, two valve seat 2 opposing ends are provided with the screen pack 10 for impurity screening, can effectively reduce fluid impurity, prevent that choke valve from stopping up.
Concrete, bidirectional throttling valve of the present utility model also can adopt the following parameters data to realize:
Distance L=24mm between the inner diameter d=8mm of throttle body 1, two valve seats 2, closing in angle [alpha]=45 of end conduction hole 7 ° can be with noise control below 50 decibels;
Distance L=4.8mm between the inner diameter d=8mm of throttle body 1, two valve seats 2, closing in angle [alpha]=60 of end conduction hole 7 ° can be with noise control below 55 decibels;
Distance L=12mm between the inner diameter d=8mm of throttle body 1, two valve seats 2, closing in angle [alpha]=75 of end conduction hole 7 ° can be with noise control below 50 decibels.
Certainly, the inner diameter d of throttle body 1 can also be made as other numerical value according to actual needs, and the distance L between two valve seats 2 also changes thereupon, and its principle is identical, is not repeated.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (9)
1. bidirectional throttling valve, comprise throttle body in a tubular form, be provided with two valve seats with its airtight cooperation in the described throttle body, the slideway that is provided with valve opening in the described valve seat and communicates with described valve opening, interior being slidingly matched with it of described slideway is provided with spool, be provided with the throttling spool hole in the described spool, described slideway is provided with the end conduction hole that cooperates with spool away from an end of valve opening, and the position near valve opening on the slideway is provided with the cross-current through hole, be provided with the ventilation annular groove that communicates with described cross-current through hole between described throttle body and the valve seat, it is characterized in that: the distance L between described two valve seats is more than or equal to 0.6 times of the described throttle body inner diameter d between two valve seats.
2. bidirectional throttling valve according to claim 1 is characterized in that: the distance L≤3d between described two valve seats.
3. bidirectional throttling valve according to claim 2 is characterized in that: the distance L=0.7d-1.5d between described two valve seats.
4. bidirectional throttling valve according to claim 3 is characterized in that: the distance L=0.75d-1d between described two valve seats.
5. bidirectional throttling valve according to claim 4, it is characterized in that: the internal diameter of described throttle body equals 8.1 ± 0.1mm, the distance L=7 ± 1mm between described two valve seats.
6. bidirectional throttling valve according to claim 1, it is characterized in that: the opposing end of described two valve seats is provided with the screen pack for impurity screening.
7. according to each described bidirectional throttling valve of claim 1-6, it is characterized in that: described end conduction hole is internal diameter and points to the convergent hole shape that the direction of slideway reduces gradually along valve opening.
8. bidirectional throttling valve according to claim 7, it is characterized in that: the closing in angle of described end conduction hole equals 45 °-75 °.
9. bidirectional throttling valve according to claim 8, it is characterized in that: the closing in angle of described end conduction hole equals 60 ° ± 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320034941.8U CN203036924U (en) | 2013-01-23 | 2013-01-23 | Bidirectional throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320034941.8U CN203036924U (en) | 2013-01-23 | 2013-01-23 | Bidirectional throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203036924U true CN203036924U (en) | 2013-07-03 |
Family
ID=48689039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320034941.8U Expired - Lifetime CN203036924U (en) | 2013-01-23 | 2013-01-23 | Bidirectional throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203036924U (en) |
-
2013
- 2013-01-23 CN CN201320034941.8U patent/CN203036924U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |