CN204574642U - Heating power expansion valve - Google Patents
Heating power expansion valve Download PDFInfo
- Publication number
- CN204574642U CN204574642U CN201520189953.7U CN201520189953U CN204574642U CN 204574642 U CN204574642 U CN 204574642U CN 201520189953 U CN201520189953 U CN 201520189953U CN 204574642 U CN204574642 U CN 204574642U
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- valve
- temperature
- chamber
- expansion valve
- heating power
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Abstract
The utility model discloses a kind of heating power expansion valve, comprise expansion valve body, described expansion valve body is provided with diaphragm valve chamber and throttling valve chamber, it is characterized in that: described diaphragm valve chamber is connected with temperature-sensitive bag by capillary, described throttling valve chamber is connected with evaporimeter, described temperature-sensitive bag is positioned on evaporimeter, and the body of described capillary is connected with air exchange pipe, and described air exchange pipe is provided with ventilation valve.The temperature gas realized in temperature-sensitive bag by the program is replaceable dissimilar, enables heating power expansion valve adapt to dissimilar cold-producing medium.
Description
Technical field
The utility model relates to a kind of heating power expansion valve, belongs to art of refrigeration units.
Background technology
The effect of heating power expansion valve makes the refrigerant liquid of high normal pressure and temperature flowing through the stream step-down of expansion valve body time, becomes low-temperature low-pressure refrigerant.Low pressure refrigerant flows through evaporimeter and cools device interior, generally arranges a temperature-sensitive bag come the throttling valve core place of feedback temperature to expansion valve body at evaporimeter place.Because cold-producing medium model is different, corresponding cold-producing medium is equipped with corresponding temperature-sensitive bag and carrys out temperature sensor, not so will be inaccurate to the adjustment of temperature.Such as R404 cold-producing medium is from R22 because cryogenic temperature is different, and corresponding heating power expansion valve model is also different, and expansion valve model difference mainly refers to that temperature-sensitive bag is different here, and the temperature gas in temperature-sensitive bag also can do corresponding change due to cold-producing medium changes in material.Therefore the corresponding a kind of cold-producing medium of general a kind of heating power expansion valve on the market, accommodation is narrow, if the refrigerant replacing in my equipment, just need to change heating power expansion valve, not only trouble but also cost of idleness simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of heating power expansion valve, and the temperature gas realized in temperature-sensitive bag is replaceable dissimilar, enables heating power expansion valve adapt to dissimilar cold-producing medium.
In order to achieve the above object, the technical solution adopted in the utility model is as follows: a kind of heating power expansion valve, comprise expansion valve body, described expansion valve body is provided with diaphragm valve chamber and throttling valve chamber, described diaphragm valve chamber is connected with temperature-sensitive bag by capillary, and described throttling valve chamber is connected with evaporimeter, and described temperature-sensitive bag is positioned on evaporimeter, the body of described capillary is connected with air exchange pipe, and described air exchange pipe is provided with ventilation valve.By separating an air exchange pipe on the capillary, realize changing the gas in temperature-sensitive bag, without the need to taking out the temperature-sensitive bag installed on an evaporator.Ventilation valve can realize three actions that gas changed by temperature-sensitive bag, first the gas in temperature-sensitive bag is vacuumized, make original gas discharge temperature-sensitive bag, then to the temperature gas rushing in new material in temperature-sensitive bag, finally make ventilation valve be in closure state, ensure that internal gas can not spill.
Preferably, described ventilation valve is three two logical reversal valves, the air exchange pipe not conducting at ventilation valve two ends when ventilation valve is in meta, when ventilation valve is in left position or right position ventilation valve two ends air exchange pipe one-way guide flow and one-way guide flow direction is contrary.
Preferably, described diaphragm valve chamber comprises upper film chamber and lower film room, and be provided with diaphragm between upper film chamber and lower film room, described upper film chamber connects described capillary, and described lower film room is provided with air-vent, and described air-vent is provided with filter screen.
Preferably, the throttling valve core that described throttling valve chamber comprises throttle valve seat, coordinates with throttle valve seat, is provided with thimble between described diaphragm and throttling valve core, is provided with elastic component between described thimble and described throttling valve core.
By adopting technique scheme, by separating an air exchange pipe on the capillary, realize changing the gas in temperature-sensitive bag, without the need to taking out the temperature-sensitive bag installed on an evaporator.Ventilation valve can realize three actions that gas changed by temperature-sensitive bag, first the gas in temperature-sensitive bag is vacuumized, make original gas discharge temperature-sensitive bag, then to the temperature gas rushing in new material in temperature-sensitive bag, finally make ventilation valve be in closure state, ensure that internal gas can not spill.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structure chart of the present utility model;
Fig. 2 is the enlarged drawing at A place in the utility model Fig. 1.
Reference numeral: 1, diaphragm valve chamber; 1a, lower film room; 1b, diaphragm; 1c, upper film chamber; 2, throttling valve chamber; 3, capillary; 4, temperature-sensitive bag; 5, evaporimeter; 6, air exchange pipe; 7, ventilation valve; 8, air-vent; 9, filter screen; 10, thimble; 11, throttle valve seat; 12, throttling valve core; 13, elastic component; 14, high-temperature high-pressure refrigerant; 15, low-temperature low-pressure refrigerant.
Detailed description of the invention
A kind of heating power expansion valve, comprise expansion valve body, expansion valve body is provided with diaphragm 1b valve chamber 1 and throttling valve chamber 2, diaphragm 1b valve chamber 1 is connected with temperature-sensitive bag 4 by capillary 3, throttling valve chamber 2 is connected with evaporimeter 5, temperature-sensitive bag 4 is positioned on evaporimeter 5, the body of capillary 3 is connected with air exchange pipe 6, and air exchange pipe 6 is provided with ventilation valve 7.Valve 7 of wherein taking a breath is three two logical reversal valves, the air exchange pipe 6 not conducting at ventilation valve 7 two ends when ventilation valve 7 is in meta, when ventilation valve 7 is in left position or right position ventilation valve 7 two ends air exchange pipe 6 one-way guide flow and one-way guide flow direction is contrary.By separating an air exchange pipe 6 on capillary 3, realize changing the gas in temperature-sensitive bag 4, without the need to taking out the temperature-sensitive bag 4 be arranged on evaporimeter 5.Ventilation valve 7 can realize three actions that gas changed by temperature-sensitive bag 4, first the gas in temperature-sensitive bag 4 is vacuumized, original gas is made to discharge temperature-sensitive bag 4, when vacuumizing here, gas can only flow out in temperature-sensitive bag 4, can not from that inflow gas of the equipment vacuumized, at this moment functional realiey when valve 7 of taking a breath is in left position or right position is exactly a check valve in theory, and when valve 7 of taking a breath is in left position or right position, the direction of check valve is contrary.Then to the temperature gas rushing in new material in temperature-sensitive bag 4, when valve 7 of at this moment taking a breath is in another duty, the function of another each and every one check valve, just in time contrary with vacuumizing that check valve water conservancy diversion direction.Finally make ventilation valve 7 be in closure state, ensure that internal gas can not spill valve 7 of taking a breath here and be in meta state, both sides not conductings, ensure sealing.
Wherein, diaphragm 1b valve chamber 1 comprises upper film chamber 1c and is provided with diaphragm 1b between lower film room 1a, upper film chamber 1c and lower film room 1a, and upper film chamber 1c connects described capillary 3, and lower film room 1a is provided with air-vent 8, and air-vent 8 is provided with filter screen 9.General heating power expansion valve comprises internal balance type and outer balanced type two kinds, because internal balance type internal pressure often changes, because there will be fluctuation during throttling, outer balanced type is easily subject to outside contamination again, on air-vent 8, therefore arranges filter screen 9 can place dust and enter into lower film room 1a.
Wherein, the throttling valve core 12 that throttling valve chamber 2 comprises throttle valve seat 11, coordinates with throttle valve seat 11, is provided with thimble 10, is provided with elastic component 13 between thimble 10 and throttling valve core 12 between diaphragm 1b and throttling valve core 12.The effect of thimble 10 regulates the openings of sizes of throttling valve core 12 on throttle valve seat 11, but due to vaporization chamber, variations in temperature is violent sometimes, the situation that cavity volume is increased sharply suddenly can be there is in upper film chamber 1c, at this moment thimble 10 can produce certain impact to throttling valve core 12, cause the opening of throttling valve core 12 on throttle valve seat 11 to increase over range suddenly, arrange elastic component 13 herein, preferred elastic component 13 is spring, vibration can be absorbed preferably, avoid impacting throttling valve core 12.
Claims (4)
1. a heating power expansion valve, comprise expansion valve body, described expansion valve body is provided with diaphragm valve chamber and throttling valve chamber, it is characterized in that: described diaphragm valve chamber is connected with temperature-sensitive bag by capillary, described throttling valve chamber is connected with evaporimeter, described temperature-sensitive bag is positioned on evaporimeter, and the body of described capillary is connected with air exchange pipe, and described air exchange pipe is provided with ventilation valve.
2. heating power expansion valve according to claim 1, it is characterized in that: described ventilation valve is three two logical reversal valves, the air exchange pipe not conducting at ventilation valve two ends when ventilation valve is in meta, when ventilation valve is in left position or right position ventilation valve two ends air exchange pipe one-way guide flow and one-way guide flow direction is contrary.
3. heating power expansion valve according to claim 2, it is characterized in that: described diaphragm valve chamber comprises upper film chamber and lower film room, and be provided with diaphragm between upper film chamber and lower film room, described upper film chamber connects described capillary, described lower film room is provided with air-vent, and described air-vent is provided with filter screen.
4. heating power expansion valve according to claim 3, it is characterized in that: the throttling valve core that described throttling valve chamber comprises throttle valve seat, coordinates with throttle valve seat, be provided with thimble between described diaphragm and throttling valve core, between described thimble and described throttling valve core, be provided with elastic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189953.7U CN204574642U (en) | 2015-03-31 | 2015-03-31 | Heating power expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189953.7U CN204574642U (en) | 2015-03-31 | 2015-03-31 | Heating power expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204574642U true CN204574642U (en) | 2015-08-19 |
Family
ID=53867265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520189953.7U Expired - Fee Related CN204574642U (en) | 2015-03-31 | 2015-03-31 | Heating power expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204574642U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701405A (en) * | 2021-08-23 | 2021-11-26 | 苏州众捷汽车零部件股份有限公司 | Refrigeration system thermostatic expansion valve temperature sensing bulb with overheat protection |
-
2015
- 2015-03-31 CN CN201520189953.7U patent/CN204574642U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701405A (en) * | 2021-08-23 | 2021-11-26 | 苏州众捷汽车零部件股份有限公司 | Refrigeration system thermostatic expansion valve temperature sensing bulb with overheat protection |
| CN113701405B (en) * | 2021-08-23 | 2022-09-02 | 苏州众捷汽车零部件股份有限公司 | Refrigeration system thermostatic expansion valve temperature sensing bulb with overheat protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20200331 |