CN203348566U - Bi-directional thermostatic expansion valve - Google Patents
Bi-directional thermostatic expansion valve Download PDFInfo
- Publication number
- CN203348566U CN203348566U CN201320257633.1U CN201320257633U CN203348566U CN 203348566 U CN203348566 U CN 203348566U CN 201320257633 U CN201320257633 U CN 201320257633U CN 203348566 U CN203348566 U CN 203348566U
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- expansion valve
- interface
- heating power
- power expansion
- restriction
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Abstract
The utility model provides a bi-directional thermostatic expansion valve. The bi-directional thermostatic expansion valve comprises a power head assembly, an adjustment assembly and a main valve body, wherein a first port and a second port are arranged on the two sides of the main valve body respectively, and a communication hole is formed between the first port and the second port. The bi-directional thermostatic expansion valve is characterized in that one end of the communication hole is provided with a reverse throttling opening; the communication hole is directly communicated with the first port and is basically coaxial with the first port; a plugging component is arranged inside the communication hole, wherein the overall reverse throttling opening is located within a channel range of the second port and is coaxial with the communication hole. The bi-directional thermostatic expansion valve is simple in structure, convenient to manufacture and machine, capable of meeting functional requirements, and quite low in cost.
Description
Technical field
The utility model belongs to refrigeration technology field, particularly the throttling control element in refrigeration system.
Background technique
In refrigeration air-conditioner and heat pump, by compressor operating, refrigerant is compressed, refrigerant is the meeting release heat in the compression pressurization, otherwise can absorb heat, refrigerant after compression enters the heating power expansion valve reducing pressure by regulating flow after the condenser distribute heat, make liquid refrigerants enter vaporizer after decompression evaporation becomes gaseous state and absorb heat, enter the compressor compresses periodic duty from muffler again, reach refrigeration.Heating power expansion valve is non-important reducing pressure by regulating flow self controlled element of refrigeration system, at refrigerating equipment, extensive use in air-conditioning and heat-pump apparatus system, for system can be carried out cold and hot switching, traditional method is to be installed in parallel two expansion valves and two one-way valves on pipeline, a forward throttling, another reverse throttling, with the switching refrigerant, flow to, this design form system pipeline complexity, take up room larger, equipment cost is higher, as want system simplification, heating power expansion valve must have the bidirectional throttle function, it is two-way heating power expansion valve, but existing two-way heating power expansion valve complex structure, production and processing is loaded down with trivial details, the manufacture cost costliness, less stable.
Therefore, the technical problems to be solved in the utility model is to provide a kind of simple in structure, stable performance, and production and processing is simple and easy, two-way heating power expansion valve cheap for manufacturing cost.
The model utility content
The purpose of this utility model is to solve the technical problem that heating power expansion valve reaches bidirectional throttle, propose a kind of simple in structure, manufacture easy to process, manufacture the cheap two-way heating power expansion valve with bidirectional throttle function, effectively reduce chiller plant system cost and two-way heating power expansion valve cost, there is larger economic benefit.
For this reason, the utility model provides a kind of two-way heating power expansion valve, comprise unit head assembly, adjusting part and main valve body, described main valve body both sides are respectively arranged with first interface and the second interface, be provided with linked hole between described first interface and the second interface, it is characterized in that, one end of described linked hole is provided with reverse restriction, described linked hole directly communicates and the almost coaxial setting with described first interface, and described reverse restriction integral body is positioned at the channel range of described the second interface and communicates.
Described linked hole and described reverse restriction coaxially arrange.
Described main valve body has cavity and pilot hole, forms the forward restriction on described pilot hole, and described forward restriction is regulated aperture by the movement of transmission rod, and described cavity and described linked hole are connected by described pilot hole.
Between described cavity and described the second interface, by inclined hole, be communicated with.
Preferred tapering transition between described linked hole and reverse restriction.
A side near described reverse restriction in described linked hole is provided with unidirectional plugging part, and described unidirectional plugging part makes refrigerant to flow through described reverse restriction towards a direction.
Described unidirectional plugging part is the spheroid that the nonmetallic material such as metal or plastics are made.
The surface that described transmission rod contacts with spheroid is provided with the protecting cover that flexible material is made.
The utility model is simple in structure, manufactures easy to processly, can meet the functional requirement of two-way heating power expansion valve, and cost is lower.
The accompanying drawing explanation
Fig. 1 is the utility model mode of execution schematic diagram.
In figure: 1-temperature-sensitive bag, 2-is by capillary tube, 3-power skull, 4-flexible sheet, 5-power headstock, the 6-main valve body, 7-transmission rod, 8-first interface, 9-the second interface, the 10-linked hole, the unidirectional plugging part of 11-, the reverse restriction of 12-, 13-driver blade, the 14-seal ring, 15-pilot hole, 16-inclined hole, 17-cavity, the 18-support, 19-spring, 20-regulating block, 21-adjusting screw rod, the 22-adjustment seat, 23-seal ring, 24-bonnet, 25-forward restriction.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described, as shown in Figure 1, two-way heating power expansion valve is by the unit head assembly, adjusting part and the most composition of main valve body three, wherein unit head is by temperature-sensitive bag 1, capillary tube 2, power skull 3, flexible sheet 4 and power headstock 5 form, temperature-sensitive bag 1 connects with power skull 3 by capillary tube 2, flexible sheet 4 is spaced intermediate at power skull 3 and power headstock 5, make temperature-sensitive bag 1, capillary tube 2, form the space of a sealing between power skull 3 and flexible sheet 4, inject the system pipeline evaporating temperature that can touch according to temperature-sensitive bag 1 after temperature sensing agent and change unit head temperature sensing agent pressure, make flexible sheet 4 produce displacement, the displacement that flexible sheet 4 produces promotes transmission rod 7 through driver blade 13 and regulates cold medium flux.
Adjusting part is by adjustment seat 22, spring 19, adjusting screw rod 21, regulating block 20, support 18 and seal ring 23 form, outside also is provided with a bonnet 24, mainly to move regulating block 20 by rotating adjusting screw rod 21, the conical surface and the definite degree of superheat of the distance between forward restriction 25 through spring 19 and support 18 adjusting transmission rod 7, transmission rod 7 conical surfaces and forward restriction 25 are on the same center of circle, when unit head pressure changes, flexible sheet 4 produces displacement, promote transmission rod 7 by driver blade 13, the mobile distance that changes transmission rod 7 conical surfaces and forward restriction 25 of transmission rod 7, thereby adjusting cold medium flux.
In the present embodiment, first interface 8 and linked hole 10 coaxially arrange, and both central axis, on same straight line, also allow to exist certain deviation certainly when reality is used.The benefit of this set is, when the high-pressure liquid refrigerant enters from interface 8, can be rapidly and the passing of exactly unidirectional plugging part 11 being turned right, and make it block reverse restriction 12.Simultaneously, in order to improve the effect of shutoff, at the main paragraph of linked hole and oppositely between restriction 12, be provided with the changeover portion of taper, can be led to unidirectional plugging part 11 like this.Certainly, the changeover portion of taper is most suitable embodiment, under enlightenment of the present utility model, also can adopt any being conducive to be led to unidirectional plugging part 11, thereby not limit other any shape for reverse restriction 12 shutoff.
And, on the communication direction along first interface 8, also some overlaps with it the second interface 9, simultaneously reverse restriction 12 integral body on linked hole 10 are positioned on the passage of the second interface 9 and communicate.Like this on the circulation path of refrigerant, from first interface 8, linked hole 10, oppositely restriction 12, to the second interface 9 basically refrigerant along same straight line, circulated, the benefit arranged like this is that the circulation efficiency of refrigerant is higher, and in terms of existing technologies, structure is simpler.
The structure of unidirectional plugging part 11 can adopt various ways, and preferred scheme is that employing is spherical, and material can be that the nonmetallic material such as metal or plastics are made.Because spherical plugging part 11 can carry out shutoff to reverse restriction 12 exactly under the pressure-acting of refrigerant.If adopt metal words, in order to prevent at the two-way heating power expansion valve duration of work, Metal Ball and transmission rod 7 are clashed into and are produced noise, can also be to the material of transmission rod 7 or structure as corresponding optimization, in the scope allowed at transmission rod 7 strokes, the protecting cover that plastics or other flexible material are made is set at the position contacted with steel ball, can further reduces noise.And the nonmetallic material such as employing plastics are made, can reduce manufacture cost.To the structure of unidirectional plugging part 11, it does not make any restriction to the utility model.And the benefit of this structure is without the parts of the unidirectional switching of control that other is set again, has greatly reduced the use of component, has reduced user cost.
In addition, between the utility model hollow cavity 17 and the second interface 9, adopt inclined hole 16 to be connected, the benefit of this structure is to process very easyly, need only can realize by inclined borehole.
As for unit head assembly and the adjusting part of two-way heating power expansion valve, be not core of the present utility model, all can directly adopt the scheme of prior art, therefore no longer launch to describe.
Working principle of the present utility model is: when being logical forward operation, the high-pressure liquid refrigerant enters from first interface 8, effect due to pressure reduction, promoting unidirectional plugging part 11 moves to the second interface 9, block reverse restriction 12, now, directly conducting between first interface 8 and the second interface 9, liquid refrigerants is from pilot hole 15 to forward restriction 25, enter valve cavity 17 after the 25 reducing pressure by regulating flow gasifications of forward restriction, connect with system by the second interface 9 through inclined hole 16, enter the vaporizer absorption refrigeration.When the refrigeration system recycled back is moved, system pipeline commutates by four-way valve, liquid refrigerants enters expansion valve from the second interface 9, promote unidirectional plugging part 11 under the refrigerant pressure-acting and move toward first interface 8 directions, oppositely restriction 16 is opened, and the second interface 9 directly communicates with first interface 8, utilize reverse restriction 16 reducing pressure by regulating flow gasifications, the refrigerant gasification connects with system by first interface 8, enters the condenser absorption refrigeration, now refrigeration system recycled back operation.
More than just for embodiment of the present utility model, be described, the modification of any details of doing in design of the present utility model and be equal to replacement, within all should belonging to protection domain of the present utility model.
Claims (9)
1. a two-way heating power expansion valve, comprise the unit head assembly, adjusting part and main valve body, described main valve body both sides are respectively arranged with first interface (8) and the second interface (9), be provided with linked hole (10) between described first interface (8) and the second interface (9), it is characterized in that, one end of described linked hole (10) is provided with reverse restriction (12), described linked hole (10) directly communicates and the almost coaxial setting with described first interface (8), described reverse restriction (12) integral body is positioned at the channel range of described the second interface (9) and communicates, be provided with plugging part (11) in linked hole.
2. two-way heating power expansion valve as claimed in claim 1, is characterized in that, described linked hole (10) and the coaxial setting of described reverse restriction (12).
3. two-way heating power expansion valve as claimed in claim 1, it is characterized in that, described main valve body has cavity (17) and pilot hole (15), the upper forward restriction (25) that forms of described pilot hole (15), described forward restriction (25) is regulated aperture by the movement of transmission rod (7) and is controlled flow, and described cavity (17) and described linked hole (10) are connected by described pilot hole (15).
4. two-way heating power expansion valve as claimed in claim 3, is characterized in that, between described cavity (17) and described the second interface (9), by inclined hole (16), is communicated with.
5. two-way heating power expansion valve as claimed in claim 1, is characterized in that, is provided with the changeover portion of cone-shaped between described linked hole (10) and reverse restriction.
6. two-way heating power expansion valve as claimed in claim 1, it is characterized in that, a side near described reverse restriction (12) in described linked hole (10) is provided with unidirectional plugging part (11), and described unidirectional plugging part (11) makes refrigerant to flow through described reverse restriction (12) towards a direction.
7. two-way heating power expansion valve as claimed in claim 6, is characterized in that, the spheroid that described unidirectional plugging part (11) is made for metallic material.
8. two-way heating power expansion valve as claimed in claim 7, is characterized in that, the surface that described transmission rod (7) contacts with spheroid is provided with the protecting cover that flexible material is made.
9. two-way heating power expansion valve as claimed in claim 6, is characterized in that, the spheroid that described unidirectional plugging part (11) is made for nonmetallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320257633.1U CN203348566U (en) | 2013-04-27 | 2013-04-27 | Bi-directional thermostatic expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320257633.1U CN203348566U (en) | 2013-04-27 | 2013-04-27 | Bi-directional thermostatic expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348566U true CN203348566U (en) | 2013-12-18 |
Family
ID=49748469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320257633.1U Expired - Lifetime CN203348566U (en) | 2013-04-27 | 2013-04-27 | Bi-directional thermostatic expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121375A (en) * | 2013-04-27 | 2014-10-29 | 王钦廉 | Bidirectional thermal expansion valve |
-
2013
- 2013-04-27 CN CN201320257633.1U patent/CN203348566U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121375A (en) * | 2013-04-27 | 2014-10-29 | 王钦廉 | Bidirectional thermal expansion valve |
| CN104121375B (en) * | 2013-04-27 | 2017-06-06 | 王钦廉 | A kind of two-way heating power expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20170606 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20170606 |