CN203053086U - Low-temperature heat pump system - Google Patents
Low-temperature heat pump system Download PDFInfo
- Publication number
- CN203053086U CN203053086U CN 201220700674 CN201220700674U CN203053086U CN 203053086 U CN203053086 U CN 203053086U CN 201220700674 CN201220700674 CN 201220700674 CN 201220700674 U CN201220700674 U CN 201220700674U CN 203053086 U CN203053086 U CN 203053086U
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- Prior art keywords
- evaporimeter
- low
- compressor
- voltage tube
- condenser
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Abstract
The utility model discloses a low-temperature heat pump system which comprises a compressor, a condenser, an evaporimeter, an expanding device, a communicating pipe, a pressure gauge and an electromagnetism valve switch, wherein an outlet of the compressor is connected to the condenser, the expanding device is connected between the condenser and the evaporimeter, an outlet of the evaporimeter is connected to the compressor, the communicating pipe is connected between an outlet of the compressor and an inlet of the evaporimeter, the pressure gauge is arranged on the outlet of the evaporimeter, and the electromagnetism valve switch is arranged at a connecting position of the communicating pipe and the outlet of the compressor. The low-temperature heat pump system can ensure that the heat pump system can be correctly operated under the low temperature, the defrost process does not need to use additional energy sources, and the service life of the system can be effectively prolonged.
Description
Technical field
The utility model relates to a kind of heat pump, relates in particular to a kind of heat pump that can use in low temperature environment.
Background technology
Heat pump is during operating, can the Yin Wendu difference face different environments for use, as environmental condition differences such as Yin Wendu, humidity and air pressure, may produce frosting or icing state at evaporimeter, cause evaporimeter to be hedged off from the outer world, can't absorb heat and cause heat pump to lose efficacy.For domestic applied environment, the probability that this situation occurs is very big, because except only a few zones such as Hainan, the regional mean winter temperature of domestic major part all is lower than 15 ° Celsius, and the heat pump frosting is the technical problem that will inevitably face.
At this problem, the solution commonly used of the industry is equipment time-temperature control methods commonly used such as employing refrigerating and air conditioning refrigerator at present, set the minimum temperature controlling value according to meteorological temperature conditions, when temperature is lower than the controlling value of setting around temperature measuring equipment records evaporimeter, start the defrosting action.This control mode because the temperature controlling value is predefined according to historical accumulation data, can't be made a response to temperature and the humidity of real-time change, is easy to generate the clean or not extra defrosting of defrosting and turns round and waste energy.
Concrete Defrost method, have electric defrosting and four-way valve counter-rotating commonly used defrost, and wherein electric defrosting is that heating wire is set in the evaporimeter periphery, and when the control that defrosts started, heating wire was switched on, by frost or the ice on the heat removal evaporimeter of heating wire generation;
Four-way valve counter-rotating defrosting is with the counter-rotating of the refrigerant loop in the heat pump, makes condenser be reversed to evaporimeter, and evaporimeter is reversed to condenser, thereby rely on high temperature refrigerant is imported evaporimeter and removes frost.
The problem of above-mentioned dual mode is that the electric defrosting power consumption is higher, has electric leakage danger; Four-way valve counter-rotating defrosting produces liquid hit phenomenon because residual liquid refrigerants in the condenser enters compressor easily, influences compressor service life.
The utility model content
Defective at prior art, the utility model discloses a kind of hot pump in low temp system, especially be suitable under the winter low temperature environment, not only can guarantee the normal operation of heat pump, and when defrosting, low temperature need not use the extra energy, can not produce liquid hit phenomenon to compressor, effectively prolong system service life.
For achieving the above object, the utility model is achieved through the following technical solutions:
Hot pump in low temp system, comprise compressor, condenser, evaporimeter, expansion gear, communicating pipe, Pressure gauge, electromagnetic valve switch, wherein the outlet of compressor is connected to condenser, expansion gear is connected between condenser and the evaporimeter, the outlet of evaporimeter is connected to compressor, be connected in communicating pipe between the entrance of the outlet of compressor and evaporimeter, Pressure gauge is located at the outlet of evaporimeter, and electromagnetic valve switch is located at communicating pipe and compressor outlet junction.
In said system, the concrete function of carrying out of each device is:
Compressor is used for compression refrigerant; Condenser is used for making the refrigerant heat radiation and is condensed into liquid state; Expansion gear is used for making liquid refrigerants to produce pressure differential at these expansion gear two ends, is called expansion drum, expansion valve, expanding chamber or pressurized tank usually again; Evaporimeter is used for absorbing heat and makes the refrigerant gasification, and refrigerant is sent to compressor; Electromagnetic valve switch is used for the control refrigerant and flows to; Pressure gauge is for detection of refrigerant pressure.
Hot pump in low temp system of the present utility model is judged the evaporator surface temperature according to refrigerant pressure in the evaporimeter, in order to the start and stop of control defrosting; When starting the defrosting action, with the high temperature refrigerant importing evaporimeter of compressor outlet.
In order to reduce production costs, be convenient to operation, used Pressure gauge is mechanical pressure gauge, and this is product very ripe in the industrial products, and fault rate is low.
Further, described system also includes second electromagnetic valve switch, is positioned at communicating pipe and evaporator inlet junction, and electrical connection and Pressure gauge.
Second electromagnetic valve switch and electromagnetic valve switch operate jointly, are used for switching the refrigerant loop.
Although it is feasible technical scheme that employings such as above-mentioned contracting machine, condenser, evaporimeter, expansion gear are connected mouth to mouth, but this connected mode is not easy to the integral installation of system, the distributing position of heat pump is adjusted in inconvenience for large-scale industrial application, therefore reliability and the installation flexibility that connects for the raising system, the invention also discloses a kind of improved structure of said system, as follows:
Described compressor is connected to condenser by first high-voltage tube; Described condenser is connected to expansion gear by second high-voltage tube; Described expansion gear is connected to evaporimeter by first low-voltage tube; Described evaporimeter is connected to compressor by second low-voltage tube; Be communicated in described communicating pipe between first high-voltage tube and first low-voltage tube; Described Pressure gauge is positioned on second low-voltage tube, and is electrically connected with electromagnetic valve switch.
In the above-mentioned structure, compressor is used for compression refrigerant; First high-voltage tube is used for transmitting the refrigerant after compressing; Condenser is used for to the refrigerant heat radiation and is condensed into liquid state; Second high-voltage tube is used for liquid refrigerants; Expansion gear is used for making liquid refrigerants to produce pressure differential; First low-voltage tube is used for transmitting the low-pressure liquid refrigerant; Evaporimeter absorbs heat makes the refrigerant gasification; Second low-voltage tube transmits refrigerant to compressor; Electromagnetic valve switch control refrigerant flows to; Pressure gauge detects refrigerant pressure in second low-voltage tube.
Wherein, the pressure that detects when pressure gauge is during less than the default value of default, and the control electromagnetic valve switch leads refrigerant communicating pipe.
Further, on the basis of the above, also include second electromagnetic valve switch, move simultaneously with aforesaid magnetic valve, in order to switch the refrigerant loop.
System of the present utility model preestablishes first default value and second default value at Pressure gauge, when refrigerant pressure is lower than first default value, starts the defrosting action; When refrigerant pressure during greater than second default value, stop the defrosting action.
Above-mentioned first default value, second default value determined according to selected refrigerant by production firm, and usually under the situation, first default value is refrigerant corresponding between the force value of-15 ° of C and-13 ° of C force value; Second default value is between the force value of refrigerant corresponding to the force value of-12 ° of C and-10 ° of C.Weather when this setting is suitable for most domestic winter low temperature environment and frost and occurs, however this setting specifically applied environment changes.
Description of drawings
Fig. 1 is the preferred implementation schematic diagram of the utility model system.
The specific embodiment
In the accompanying drawings; the best that discloses the utility model hot pump in low temp system is implemented structure; the simplification that those skilled in the art carry out on the basis of foregoing invention content, improvement, change, replacement or other equivalent variations and modification; only otherwise exceed connotation of the present utility model, all belong to protection domain of the present utility model.
With reference to the accompanying drawings 1, hot pump in low temp system of the present utility model, compressor 11 is connected with first high-voltage tube 21 with condenser 12, after compressed machine 11 compressions of refrigerant, is sent to condenser 12 by first high-voltage tube 21 and dispels the heat and condense, and becomes liquid refrigerants.Condenser 12 connects expansion gear 13 with second high-voltage tube 22, and liquid refrigerants forms pressure differential through the effect of expansion gear 13 at the expansion gear two ends.The liquid refrigerants of low pressure is sent to evaporimeter 14 with first low-voltage tube 23, is evaporated to gaseous coolant by evaporimeter absorbing environmental heat, again gaseous coolant is sent to compressor 11 with second low-voltage tube 24 and carries out the refrigerant compression, forms complete circulation.
Be provided with communicating pipe 5 between first high-voltage tube 21 and first low-voltage tube 23, communicating pipe 5 and first high-voltage tube, 21 junctions arrange the flow direction that electromagnetic valve switch 31 switches the high pressure refrigerant.Second low-voltage tube, 24 places are provided with the pressure that Pressure gauge 41 detects refrigerant in second low-voltage tube 24.When refrigerant pressure was lower than first default value, trigger signals control electromagnetic valve switch 31 with high pressure refrigerant guiding communicating pipe 5, imported evaporimeter by the high pressure refrigerant, and evaporator temperature is increased to more than the frost point, and action defrosts.
After the high pressure refrigerant imports evaporimeter, evaporator temperature will raise and produce defrosting effect, the pressure raising that temperature raises and will cause refrigerant, when refrigerant pressure is higher than this first default value, trigger the control signal, make electromagnetic valve switch 31 switching directions, refrigerant directed toward condenser 12 is recovered to run well.
By the way, under the condition that does not produce the frosting phenomenon, keep the normal operation of heat pump.
Wherein, communicating pipe 5 and first low-voltage tube, 23 junctions arrange second electromagnetic valve switch 32, are connected to Pressure gauge simultaneously with electromagnetic valve switch 31, and interlock switches the refrigerant loop.
Under a kind of particular refinement, can also another Pressure gauge 42 be set at the first high-voltage tube place, when the first high-voltage tube refrigerant pressure during greater than predefined the 3rd default value, trigger signals control electromagnetic valve switch switches refrigerant and flows to, and can finish high voltage protection simultaneously.
Claims (5)
1. hot pump in low temp system, comprise compressor, condenser, evaporimeter, expansion gear, communicating pipe, Pressure gauge, electromagnetic valve switch, the outlet that it is characterized in that compressor is connected to condenser, expansion gear is connected between condenser and the evaporimeter, the outlet of evaporimeter is connected to compressor, be connected in communicating pipe between the entrance of the outlet of compressor and evaporimeter, Pressure gauge is located at the outlet of evaporimeter, and electromagnetic valve switch is located at communicating pipe and compressor outlet junction.
2. hot pump in low temp system according to claim 1 is characterized in that described Pressure gauge is mechanical pressure gauge.
3. hot pump in low temp system according to claim 1 is characterized in that also including second electromagnetic valve switch, is positioned at communicating pipe and evaporator inlet junction, and electrical connection and Pressure gauge.
4. hot pump in low temp system according to claim 1 is characterized in that described compressor is connected to condenser by first high-voltage tube; Described condenser is connected to expansion gear by second high-voltage tube; Described expansion gear is connected to evaporimeter by first low-voltage tube; Described evaporimeter is connected to compressor by second low-voltage tube; Be communicated in described communicating pipe between first high-voltage tube and first low-voltage tube; Described Pressure gauge is positioned on second low-voltage tube, and is electrically connected with electromagnetic valve switch.
5. hot pump in low temp system according to claim 4 is characterized in that also comprising second electromagnetic valve switch, is positioned at communicating pipe and the first low-voltage tube junction, and electrical connection and Pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220700674 CN203053086U (en) | 2012-12-17 | 2012-12-17 | Low-temperature heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220700674 CN203053086U (en) | 2012-12-17 | 2012-12-17 | Low-temperature heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053086U true CN203053086U (en) | 2013-07-10 |
Family
ID=48736033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220700674 Expired - Lifetime CN203053086U (en) | 2012-12-17 | 2012-12-17 | Low-temperature heat pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123191A (en) * | 2013-01-29 | 2013-05-29 | 依科瑞德（北京）能源科技有限公司 | Low temperature heat pump system |
| WO2018201851A1 (en) * | 2017-05-03 | 2018-11-08 | 青岛海尔空调电子有限公司 | Split heat pump air conditioner and method for delaying frosting thereon |
-
2012
- 2012-12-17 CN CN 201220700674 patent/CN203053086U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123191A (en) * | 2013-01-29 | 2013-05-29 | 依科瑞德（北京）能源科技有限公司 | Low temperature heat pump system |
| CN103123191B (en) * | 2013-01-29 | 2016-09-07 | 依科瑞德（北京）能源科技有限公司 | A kind of hot pump in low temp system |
| WO2018201851A1 (en) * | 2017-05-03 | 2018-11-08 | 青岛海尔空调电子有限公司 | Split heat pump air conditioner and method for delaying frosting thereon |
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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: 20130710 |
|
| CX01 | Expiry of patent term |