CN204085025U - A kind of defrosting valve - Google Patents
A kind of defrosting valve Download PDFInfo
- Publication number
- CN204085025U CN204085025U CN201420570591.1U CN201420570591U CN204085025U CN 204085025 U CN204085025 U CN 204085025U CN 201420570591 U CN201420570591 U CN 201420570591U CN 204085025 U CN204085025 U CN 204085025U
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- CN
- China
- Prior art keywords
- defrosting
- valve
- spool
- upper cover
- valve body
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of defrosting valve, it is characterized in that it comprises valve body (2), spool (5) is provided with in valve body (2), valve body (2) is provided with upper cover (1), be provided with in spool (5) and promote piston (3), the bottom cover of upper cover (1) has returning pull-spring (4), the upper end of returning pull-spring (4) is connected with upper cover (1), lower end is connected with the lower end promoting piston (3), bottom in valve body (2) is provided with following table (12), upper cover (1) is provided with tunnel inlets (9), the sidewall of valve body (2) has bidirectional flow road junction (10), the lower end of valve body (2) has runner exit (11), the utility model is simple and reasonable, long service life, improve air-conditioning heating efficiency.
Description
Technical field:
The utility model relates to a kind of defrosting valve, belongs to air-conditioning technical field, and it is for carrying out defrosting control to evaporimeter during air-conditioning heating.
Background technology:
During air-conditioning heating, evaporimeter meeting frosting, if frosting is blocked up, will cause heating efficiency to reduce, so need to carry out defrosting to evaporimeter.The mode of present defrosting, is that during defrosting, condenser becomes evaporimeter by cross valve divert air flow direction to the overall defrosting of control evaporimeter, heats and be forced to stop, reducing the heating efficiency of air-conditioning.
Utility model content:
The purpose of this utility model is the deficiency overcoming above-mentioned prior art, evaporimeter defrosting is carried out to the mode of segmentation defrosting, namely when defrosting, one group of evaporimeter defrosting, another group evaporimeter works on, air-conditioning heating does not stop, thus improves the efficiency of air-conditioning greatly, also improves a lot to the comfortableness of air-conditioning.This defrosting valve arrangement advantages of simple, long service life.
The purpose of this utility model can be reached by following measure: a kind of defrosting valve, it is characterized in that it comprises valve body, be provided with spool in valve body, valve body is provided with upper cover, promotion piston is provided with in spool, the bottom cover of upper cover has returning pull-spring, and the upper end of returning pull-spring is connected with upper cover, and lower end is connected with the lower end promoting piston, bottom in valve body is provided with following table, on cover and be provided with tunnel inlets, the sidewall of valve body has bidirectional flow road junction, and the lower end of valve body has runner exit.
In order to realize the purpose of this utility model further, described promotion piston is " Shang " type, promotes upper piston area and divides insertion upper cover cavity.
In order to realize the purpose of this utility model further, described bidirectional flow road junction and the bore of runner exit all large than the bore of tunnel inlets.
In order to realize the purpose of this utility model further, on described following table to runner mouth, the distance on edge is less than the diameter of runner mouth.
In order to realize the purpose of this utility model further, the height of described spool is greater than the diameter at bidirectional flow road junction.
In order to realize the purpose of this utility model further, described promotion piston is " one " type.
In order to realize the purpose of this utility model further, the lower end of described spool is provided with sealing gasket.
In order to realize the purpose of this utility model further, runner is provided with in described promotion piston, small valve core is provided with in the runner of promotion piston lower portion, on small valve core, cover has spring, the upper end of spring is connected with small valve core, lower end is connected with spool, and spool has through hole, and the lower end of small valve core is corresponding with through hole.
In order to realize the purpose of this utility model further, the upper cover of described defrosting valve connects defrosting magnetic valve, and the tunnel inlets of upper cover is connected with magnetic valve gas outlet.
The utility model can produce following good effect compared with the prior art: the utility model is simple and reasonable, long service life, can make evaporimeter segmentation defrosting, heat and do not stop during defrosting, thus improve the heating efficiency of air-conditioning.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the first embodiment of the utility model;
Fig. 2 is the working state schematic representation of Fig. 1;
Fig. 3 is the structural representation of the utility model the second embodiment;
Fig. 4 is the working state schematic representation of Fig. 3;
Fig. 5 is the structural representation of the third embodiment of the utility model;
Fig. 6 is the working state schematic representation of Fig. 5;
Fig. 7 is the structural representation of the utility model the 4th kind of embodiment;
Fig. 8 is the working state schematic representation of Fig. 7;
Fig. 9 is the enlarged drawing of the small valve core part of Fig. 7
Figure 10 is the structural representation of the utility model the 5th kind of embodiment;
Figure 11 is the working state schematic representation of Figure 10;
Figure 12 is the utility model for heating state diagram in air-conditioning heating system;
Figure 13 is that the utility model is for the defrosting state diagram in air-conditioning heating system.
Detailed description of the invention: detailed description of the invention of the present utility model is elaborated below in conjunction with accompanying drawing:
Embodiment 1: a kind of defrosting valve (see Fig. 1-Fig. 2), it comprises valve body 2, spool 5 is provided with in valve body 2, valve body 2 is provided with upper cover 1, is provided with and promotes piston 3 in spool 5, and the diameter promoting piston 3 is less than the diameter of spool 5, this promotion piston 3 is “ Shang " type; promote piston 3 upper part and insert upper cover 1 inner chamber, thus reduce pressurized sectional area, reduce air-flow to the active force of spool 5.The bottom cover of upper cover 1 has returning pull-spring 4, and the upper end of returning pull-spring 4 is connected with upper cover 1, and lower end is connected with the lower end promoting piston 3, shortens the size of valve body like this.Bottom in valve body 2 is provided with following table 12, and upper cover 1 is provided with tunnel inlets 9, and the sidewall of valve body 2 has bidirectional flow road junction 10, and the lower end of valve body 2 has runner exit 11,
When the not defrosting of defrosting valve, tunnel inlets 9 place does not have pressure, and spool 5 is under the effect of playback extension spring 4, and be placed in valve body top, now, bidirectional flow road junction 10 is communicated with runner exit 11.
When there is high temperature and high pressure gas at tunnel inlets 9 place, promote piston 3 effect of being stressed, move downward, be with movable valve plug 5 to move downward simultaneously, when spool lower surface and valve body table top 12 in conjunction with time, bidirectional flow road junction 10 and runner exit 11 are closed, and tunnel inlets 9 place high temperature and high pressure gas is flowed out by bidirectional flow road junction 10, to evaporimeter defrosting.
When tunnel inlets 9 place high temperature and high pressure gas disappears, promote distress resolves on piston 3, spool 5 is under the pulling force effect of playback extension spring 4, and automatic homing, bidirectional flow road junction 10 is communicated with runner exit 11, and air-conditioning continues to heat work.
Due to environment for use requirement, between runner 11 and bidirectional flow road junction 10, circulating resistance is the smaller the better, and runner mouth 9 does not affect to the fluid resistance of reversible passage 10 performance, so all at least large than the bore of tunnel inlets 9 specification of the bore of bidirectional flow road junction 10 and runner exit 11, preferably at least large 3mm.Also because such environment for use, spool 5 move down the diameter that distance is less than 2 times of runners 10, when namely spool 5 closes runner exit 11, the upper edge of spool 5 is in runner 10 mouthfuls of centre positions, need not open completely, the fluid requirements of runner mouth 9 can be met like this, can body size be reduced again.
In order to ensure runner mouth 9 and runner mouth 10 and runner mouth 11, three passages do not produce all-pass, and the height of spool 5 is greater than the diameter at bidirectional flow road junction 10, so just ensure to communicate with runner mouth 10 by runner mouth 9, or runner mouth 10 communicates with runner mouth 11, can not three passage all-pass.
The utility model adopts extension spring to pull spool 5 to be placed in the structure of valve body upper end, and this just makes bidirectional interface runner 10 and runner exit 11 without any barrier, makes bidirectional flow road junction 10 to runner exit 11 resistance extremely low, decreases the pressure loss, improve the efficiency of air-conditioning.
The utility model tunnel inlets 9 place pressure directly acts on and promotes on piston 3, because the diameter promoting piston 3 is less than the diameter of spool 5, lifting surface area reduces, reduce the thrust to spool 5, reduce the shock of spool 5 pairs of following tables 12, not only improve the service life of spool 5, also reduce because valve body 2 clashes into the impact of vibrations on air conditioning pipe system.
When the utility model defrosting valve uses in air-conditioning heating system (see Figure 12, Figure 13), two defrosting valves by shown in figure with defrosting magnetic valve 13, evaporimeter 14, distributing valve 15, expansion valve 16, condenser 17, compressor 18, four-way change-over valve 19, be connected.
When normally heating work, when not needing defrosting (see Figure 12), defrosting magnetic valve 13 cuts out, and refrigerant air-flow flows to runner exit 11 by bidirectional flow road junction 10, then flow back into compressor, and air-conditioning normally heats work.
When needs defrosting (see Figure 13), one of them defrosting magnetic valve 13 is opened, another defrosting magnetic valve 13 cuts out, high-temperature high-pressure air flow is flowed into by tunnel inlets 9, promote piston 3 to move down, band movable valve plug 5 moves down, seal to spool 5 with valve body following table 12, cut off runner exit 11, be communicated with tunnel inlets 9 and bidirectional flow road junction 10, hot gas flows through bidirectional flow road junction 10 to evaporimeter 14 by tunnel inlets 9, to evaporimeter 14 defrosting, when defrosting terminates, defrosting magnetic valve 13 cuts out, tunnel inlets 9 high temperature air pressure disappears, spool 5 is under returning pull-spring 4 acts on, spool 5 is playbacked, bidirectional flow road junction 10 is communicated with runner exit 11, A/C evaporator 14 works on.
In like manner, when another group evaporimeter needs defrosting, defrosting magnetic valve 13 cuts out, and another defrosting magnetic valve 13 is opened, and makes another evaporimeter 14 defrosting.
Embodiment 2: a kind of defrosting valve (see Fig. 3-Fig. 4), its structure is basic identical with embodiment 1 with principle.Its difference is that promoting piston 3 is " one " type, and when being applicable to small-bore air-conditioning, because pipeline diameter is little, the impact of generation is little, thus can remove the upper part promoting piston.
Embodiment 3: a kind of defrosting valve (see Fig. 5-Fig. 6), its structure is basic identical with embodiment 1 with principle.Its difference is that the lower end of spool 5 is provided with sealing gasket 8.
Embodiment 4: a kind of defrosting valve (see Fig. 7-Fig. 9), its structure is basic identical with embodiment 1 with principle.Its difference is to promote to be provided with runner 20 in piston 3, and be provided with small valve core 6 in the runner of promotion piston 3 bottom, on small valve core 6, cover has spring 7, the upper end of spring 7 is connected with small valve core 6, lower end is connected with spool 5, spool 5 has through hole 21, and the lower end of small valve core 6 is corresponding with through hole 21.
Need two-stage differential pressure to open defrosting valve in some occasion.When evaporimeter defrosting terminates, in internal pressure decline process automatically, when dropping to the opening pressure of small valve core 6, small valve core 6 is opened under the elastic force effect of spring 7, and the pressure at bidirectional flow road junction 10 to runner 21, drains the pressure of evaporimeter by runner 20, when pressure drops to big valve core 5 opening pressure again time, big valve core 5 playback extension spring 4 effect under on devolve position, now bidirectional flow road junction 10 is communicated with runner exit 11, and air-conditioning continues to heat work.
Embodiment 5: a kind of defrosting valve (see Figure 10-Figure 11), its structure is basic identical with embodiment 1 with principle.Its difference is that the upper cover 1 of defrosting valve connects defrosting magnetic valve 13, and the tunnel inlets 9 of upper cover 1 is connected with defrosting magnetic valve gas outlet, forms a valve group.
?above embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that the common engineers and technicians in this area make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (9)
1. a defrosting valve, it is characterized in that it comprises valve body (2), spool (5) is provided with in valve body (2), valve body (2) is provided with upper cover (1), be provided with in spool (5) and promote piston (3), the bottom cover of upper cover (1) has returning pull-spring (4), the upper end of returning pull-spring (4) is connected with upper cover (1), lower end is connected with the lower end promoting piston (3), bottom in valve body (2) is provided with following table (12), upper cover (1) is provided with tunnel inlets (9), the sidewall of valve body (2) has bidirectional flow road junction (10), the lower end of valve body (2) has runner exit (11).
2. a kind of defrosting valve according to claims 1, it is characterized in that described promotion piston (3) are “ Shang " type, promote piston (3) upper part and insert upper cover (1) inner chamber.
3. a kind of defrosting valve according to claims 1, is characterized in that the bore of described bidirectional flow road junction (10) and runner exit (11) is all large than the bore of tunnel inlets (9).
4. a kind of defrosting valve according to claims 1, is characterized in that the distance on edge on described following table (12) to runner mouth (10) is less than the diameter of runner mouth (10).
5. a kind of defrosting valve according to claims 1, is characterized in that the height of described spool (5) is greater than the diameter of bidirectional flow road junction (10).
6. a kind of defrosting valve according to claims 1, is characterized in that described promotion piston (3) is " one " type.
7. a kind of defrosting valve according to claims 1, is characterized in that the lower end of described spool (5) is provided with sealing gasket (8).
8. a kind of defrosting valve according to claims 1, it is characterized in that being provided with runner (20) in described promotion piston (3), small valve core (6) is provided with in the runner of promotion piston (3) bottom, the upper cover of small valve core (6) has spring (7), the upper end of spring (7) is connected with small valve core (6), lower end is connected with spool (5), spool (5) has through hole (21), and the lower end of small valve core (6) is corresponding with through hole (21).
9. a kind of defrosting valve according to claims 1, it is characterized in that the upper cover (1) of described defrosting valve connects defrosting magnetic valve (13), the tunnel inlets (9) of upper cover (1) is connected with magnetic valve gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570591.1U CN204085025U (en) | 2014-09-30 | 2014-09-30 | A kind of defrosting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420570591.1U CN204085025U (en) | 2014-09-30 | 2014-09-30 | A kind of defrosting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085025U true CN204085025U (en) | 2015-01-07 |
Family
ID=52177728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420570591.1U Withdrawn - After Issue CN204085025U (en) | 2014-09-30 | 2014-09-30 | A kind of defrosting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204085025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197611A (en) * | 2014-09-30 | 2014-12-10 | 贾培育 | Defrosting valve |
-
2014
- 2014-09-30 CN CN201420570591.1U patent/CN204085025U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197611A (en) * | 2014-09-30 | 2014-12-10 | 贾培育 | Defrosting valve |
| WO2016050206A1 (en) * | 2014-09-30 | 2016-04-07 | 贾培育 | Defrosting valve |
| CN104197611B (en) * | 2014-09-30 | 2017-05-10 | 贾培育 | Defrosting 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 |
Granted publication date: 20150107 Effective date of abandoning: 20170510 |
|
| AV01 | Patent right actively abandoned |