CN203100311U - Refrigerating system automatically assisting in defrosting - Google Patents
Refrigerating system automatically assisting in defrosting Download PDFInfo
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- CN203100311U CN203100311U CN201320081737.1U CN201320081737U CN203100311U CN 203100311 U CN203100311 U CN 203100311U CN 201320081737 U CN201320081737 U CN 201320081737U CN 203100311 U CN203100311 U CN 203100311U
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- defrosting
- compressor
- evaporimeter
- condenser
- refrigerating system
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Abstract
The utility model provides a refrigerating system automatically assisting in defrosting. The refrigerating system comprises a refrigerating pipeline formed by connecting a compressor, a condenser, an expansion valve and an evaporator in sequence. A defrosting electromagnetic valve is arranged between the compressor and the condenser, an outlet end of the defrosting electromagnetic valve is connected with a defrosting coil pipe, and an outlet end of the defrosting coil pipe is connected with an inlet end of the evaporator. According to the refrigerating system, high-temperature high-pressure refrigerant gas at the outlet end of the compressor in the refrigerating system passes through the defrosting coil pipe to defrost the evaporator, extra energy is not needed in defrosting, and energy is saved. Moreover, a machine does not need to be started for defrosting, automatic defrosting is achieved, and the service life of a refrigerating unit is prolonged.
Description
Technical field
The utility model relates to air-conditioning technical field, is specifically related to the auxiliary automatically defrosting of air-conditioning, various refrigeration unit.
Background technology
Refrigeration unit such as air-conditioning, freezing and refrigeration in the air water capacity higher and vaporizer side since ambient influnence cause throttling after the low pressure refrigerant fluid pressure cross low after, can cause evaporating temperature low excessively (generally being lower than zero degree) and then cause evaporimeter frosting.Evaporimeter frosting then can have a strong impact on the heat exchange of evaporimeter, and in order to ensure the heat exchange effect of evaporimeter, present most of refrigeration unit are equipped with defrosting mode, this type of frosting problem of special disposal.
Defrost method commonly used has two kinds: first kind is auxiliary electrical heating defrosting, and the electric heating tube of defrosting promptly is installed on evaporimeter, reaches the defrosting purpose by the electric heating tube heating; Second kind is the compressor air-discharging defrosting.More save unit space and cost though second kind of compressor air-discharging defrosting has relatively than first kind of auxiliary electrical heating defrosting, defrosting speed is fast, is a kind of Defrost mode more commonly used.But in compressor air-discharging when defrosting,, unit stops to the heat supply of heat supply object, but indoor fan is still in running, and recirculated water is by evaporimeter, and the water temperature decline scope is bigger, and bigger to the comfortableness influence of air-conditioning, the heating performance of unit also can descend.
So be that special again start defrosted after defrosting of compressor hot gas or the defrosting of employing Electric heating all needed to be judged artificially; In addition, in defrost process, need to consume lot of energy, raise and melt required energy as frost layer temperature, reach the required energy of air side heat exchanger fin and copper pipe intensification etc., in order to accelerate defrosting, certainly will increase the power output of compressor, influenced the service life of compressor.
The utility model content
The utility model will solve above-mentioned deficiency exactly, and a kind of refrigeration system of auxiliary defrosting automatically is provided, and reaches to need not manual operation, energy savings, and prolongs the refrigeration unit purpose in service life.
In order to reach above-mentioned effect, the utility model provides a kind of refrigeration system of auxiliary defrosting automatically, comprise the refrigeration pipe that connects to form successively by compressor, condenser, expansion valve, evaporimeter, be provided with the defrosting magnetic valve between described compressor and the condenser, the port of export of described defrosting magnetic valve is connected with defrosting coil, and the port of export of described defrosting coil is connected with the entrance point of evaporimeter.
Be provided with first check valve in described defrosting magnetic valve and the defrosting coil.
Described condenser middle part promptly is provided with the defrost circuit pipeline at coil pipe flow process 1/3 ~ 1/2 place, and described defrost circuit pipeline is provided with second check valve.
Expansion valve is electric expansion valve or heating power expansion valve in the utility model.
Refrigeration system of the present utility model is the refrigerant gas that low-temperature low-pressure refrigerant gas is compressed into HTHP by compressor, carry out heat exchange through condenser with cold air then, make the refrigerant gas of HTHP be condensed into high pressure refrigerant liquid, the electric expansion valve (or heating power expansion valve) of flowing through again carries out the throttling step-down and forms low pressure refrigerant liquid, rapid evaporation became low-temperature low-pressure refrigerant gas after the low pressure refrigerant liquid of last inflow evaporator carried out heat exchange with air, sucked low pressure (LP) cylinder by compressor subsequently, finish a kind of refrigeration cycle, reach the purpose of refrigeration.
When refrigeration unit is shut down, need not by external impetus, do not need to start shooting again yet, utilize the pressure reduction between condenser and the evaporimeter that evaporimeter is carried out auxiliary automatically defrosting.Specifically be that main circuit was closed after refrigeration system was shut down, the defrosting magnetic valve is opened, and has time-delay 30S-120S function; The electric expansion valve self-zeroing is closed refrigerating circuit, and and second check valve act on simultaneously in the locked pipeline between second check valve and electric expansion valve of refrigerant liquid, and from the high-temperature high-pressure refrigerant gas that compressor outlet comes out is kept at defrost circuit pipeline between condenser inlet to the second check valve.Because pressure reduction, high-temperature high-pressure refrigerant gas flows into defrosting coil and evaporimeter through the defrosting magnetic valve, and evaporimeter is carried out automatic defrosting.
So the utlity model has following beneficial effect:
1, the utility model is evaporimeter to be defrosted by defrosting coil by the compressor outlet high-temperature high-pressure refrigerant gas in the refrigeration system, does not need additional energy to defrost, thus energy savings significantly;
2, because the utility model is in time just evaporimeter to be defrosted when refrigeration system is closed, need not again special start and defrost, realize automatic defrosting, and improved refrigeration unit evaporimeter heat exchange effect.
3, after refrigeration system quits work, system utilizes the pressure reduction between condenser and the evaporimeter automatically, and the time of defrosting is short.
4, the utility model improves the system pressure balancing speed, is of value to the service life that prolongs refrigeration unit.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model structural representation.
Among the figure: 1-compressor, the 2-magnetic valve that defrosts, 3-defrost circuit pipeline, 4-second check valve, 5-condenser, 6-electric expansion valve, 7-first check valve, 8-defrosting coil, 9-evaporimeter.
The specific embodiment
As shown in Figure 1, a kind of refrigeration system of auxiliary defrosting automatically, comprise the refrigeration pipe that connects to form successively by compressor 1, condenser 5, electric expansion valve 6, evaporimeter 9, be provided with defrosting magnetic valve 2 between described compressor 1 and the condenser 5, the port of export of described defrosting magnetic valve 2 is connected with defrosting coil 8, and the port of export of described defrosting coil 8 is connected with the entrance point of evaporimeter 9 by first check valve 7; Described condenser 5 one sides are provided with defrost circuit pipeline 3, and described defrost circuit pipeline 3 is provided with second check valve 4.
The utility model is in time just evaporimeter to be defrosted when refrigeration system is closed, need not special start defrosts again, evaporimeter is defrosted by defrosting coil by the compressor outlet high-temperature high-pressure refrigerant gas in the refrigeration system, do not need additional energy to defrost, the time of defrosting is short, thereby energy savings significantly, and improved refrigeration unit evaporimeter heat exchange effect.
Above embodiment is not limited only to protection domain of the present utility model, all make amendment based on basic thought of the present utility model or change all belong to protection domain of the present utility model.
Claims (3)
1. assist the refrigeration system that defrosts automatically for one kind, comprise the refrigeration pipe that connects to form successively by compressor, condenser, expansion valve, evaporimeter, it is characterized in that: be provided with the defrosting magnetic valve between described compressor and the condenser, the port of export of described defrosting magnetic valve is connected with defrosting coil, and the port of export of described defrosting coil is connected with the entrance point of evaporimeter.
2. a kind of refrigeration system of auxiliary defrosting automatically according to claim 1 is characterized in that: be provided with first check valve in described defrosting magnetic valve and the defrosting coil.
3. a kind of refrigeration system of auxiliary defrosting automatically according to claim 1 is characterized in that: described condenser middle part is provided with the defrost circuit pipeline, and described defrost circuit pipeline is provided with second check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320081737.1U CN203100311U (en) | 2013-02-22 | 2013-02-22 | Refrigerating system automatically assisting in defrosting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320081737.1U CN203100311U (en) | 2013-02-22 | 2013-02-22 | Refrigerating system automatically assisting in defrosting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203100311U true CN203100311U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320081737.1U Expired - Fee Related CN203100311U (en) | 2013-02-22 | 2013-02-22 | Refrigerating system automatically assisting in defrosting |
Country Status (1)
| Country | Link |
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| CN (1) | CN203100311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485987A (en) * | 2016-01-14 | 2016-04-13 | 合肥天鹅制冷科技有限公司 | Quick defrosting device for air conditioner evaporator |
-
2013
- 2013-02-22 CN CN201320081737.1U patent/CN203100311U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485987A (en) * | 2016-01-14 | 2016-04-13 | 合肥天鹅制冷科技有限公司 | Quick defrosting device for air conditioner evaporator |
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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 |
Granted publication date: 20130731 Termination date: 20210222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |