CN103968594A - Air cooling heat pump unit - Google Patents
Air cooling heat pump unit Download PDFInfo
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- CN103968594A CN103968594A CN201410232311.0A CN201410232311A CN103968594A CN 103968594 A CN103968594 A CN 103968594A CN 201410232311 A CN201410232311 A CN 201410232311A CN 103968594 A CN103968594 A CN 103968594A
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Abstract
The invention provides an air cooling heat pump unit. The air cooling heat pump unit comprises a compressor or multiple compressors connected in parallel, two independent air cooling heat exchangers, two independent outdoor fans, a water-cooling heat exchanger as well as four four-way valves. According to the invention, the two air cooling heat exchangers are adopted for replacing the original one air cooling heat exchanger, so that when the air cooling heat pump unit produces cold water at low temperature, one of the cooling heat exchangers is cut off, therefore, the purpose of reducing the area of the air cooling heat exchangers is achieved, and the risk that a liquid state refrigerant returns to a system is reduced; when the air cooling heat pump unit produces hot water at high temperature, one of air cooling heat exchangers is taken as an evaporator, the other air cooling heat exchanger is taken as a condenser, so that system pressure and air returning temperature are controlled and maintained in a reasonable range; when the air cooling heat pump unit produces hot water at low temperature, under the condition that the frosted water-cooling heat exchanger needs defrosting, one air cooling heat exchanger performs defrosting, and the other air cooling heat exchange heats continuously, so that the requirement that the unit continuously provides hot water is satisfied.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, relate to a kind of Air-Cooled Heat Pump Unit.
Background technology
Existing Air-Cooled Heat Pump Unit, air cooling heat exchanger otherwise all do evaporimeter use, or all do condenser use.In the time of cryogenic refrigeration water, air cooling heat exchanger is all used as condenser, may make like this condensation effect very good, and evaporimeter can not evaporate completely, thereby causes system to return liquid refrigerants, when serious, causes compressor to burn; In the time of high temperature water heating, need compressor exhaust temperature high, at this moment system pressure also can be very high, and air cooling heat exchanger is all used as evaporimeter, evaporation effect is very good, causes suction temperature very high; In the time of low-temperature heating water, when air cooling heat exchanger is used as condenser, water cooling heat exchanger is used as evaporimeter, the refrigerant of HTHP melts frost in the time of air cooling heat exchanger condensation, and still, condensed refrigerant need to be at water cooling heat exchanger the inside evaporation endothermic, like this, the water of water cooling heat exchanger the inside has become cold water, causes unit can not continue to offer hot water demand, thereby affects user's comfortableness requirement.
In summary, how to provide a kind of Air-Cooled Heat Pump Unit, effectively improving the reliability of Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, high temperature water heating and low-temperature heating water is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of Air-Cooled Heat Pump Unit, to solve the low problem of reliability of Air-Cooled Heat Pump Unit when cryogenic refrigeration water, high temperature water heating and the low-temperature heating water.
A kind of Air-Cooled Heat Pump Unit, comprising:
A compressor or multiple parallel connection compressor;
The first air cooling heat exchanger;
The first outdoor fan, described the first outdoor fan is used for to described the first air cooling heat exchanger enhanced heat exchange;
The second air cooling heat exchanger, described the second air cooling heat exchanger and described the first air cooling heat exchanger are separate;
The second outdoor fan, described the second outdoor fan and described the first outdoor fan are separate, and described the second outdoor fan is used for to described the second air cooling heat exchanger enhanced heat exchange;
Water cooling heat exchanger, the input of described water cooling heat exchanger is connected with described the first air cooling heat exchanger, described the second air cooling heat exchanger respectively;
The first cross valve, the first end of described the first cross valve connects the exhaust outlet of described compressor or described parallel connection compressor, the second end of described the first cross valve connects described the first air cooling heat exchanger, and described the first cross valve is used for controlling described the first air cooling heat exchanger and uses or use as evaporimeter as condenser;
The second cross valve, the first end of described the second cross valve connects the exhaust outlet of described compressor or described parallel connection compressor, the second end of described the second cross valve connects described the second air cooling heat exchanger, and described the second cross valve is used for controlling described the second air cooling heat exchanger and uses or use as evaporimeter as condenser;
The 4th cross valve, the first end of described the 4th cross valve connects the output of described water cooling heat exchanger, the 3rd end of described the 4th cross valve and the common port of the 4th end are connected respectively the 3rd end of described the first cross valve and the common port of the 4th end, the 3rd end of described the second cross valve and the common port of the 4th end, and described the 4th cross valve is used for controlling described water cooling heat exchanger and uses or use as evaporimeter as condenser;
The 3rd cross valve, the first end of described the 3rd cross valve connects the exhaust outlet of described compressor or described parallel connection compressor, the second end of described the 3rd cross valve connects the second end of described the 4th cross valve, the 3rd end of described the 3rd cross valve and the common port of the 4th end are connected respectively the 3rd end of described the 4th cross valve and the gas returning port of the common port of the 4th end, described compressor or described parallel connection compressor, and described the 3rd cross valve is used for controlling described water cooling heat exchanger water heating.
Preferably, described the first air cooling heat exchanger is connected with the input of described water cooling heat exchanger by the first electric expansion valve, and described the first electric expansion valve is for controlling the cold medium flux that flows through described the first air cooling heat exchanger.
Preferably, described the second air cooling heat exchanger is connected with the input of described water cooling heat exchanger by the second electric expansion valve, and described the second electric expansion valve is for controlling the cold medium flux that flows through described the second air cooling heat exchanger.
Preferably, also comprise gas-liquid separator;
The import of described gas-liquid separator connects the 3rd end of described the 3rd cross valve and the common port of the 4th end, and the outlet of described gas-liquid separator connects the gas returning port of described compressor or described parallel connection compressor.
Preferably, on the link circuit of the gas returning port of described gas-liquid separator outlet and described compressor or described parallel connection compressor, low pressure switch is installed.
Preferably, the common port of described the first cross valve, described the second cross valve and described the 3rd cross valve is provided with high-pressure switch.
Preferably, described the first air cooling heat exchanger is identical with the model of described the second air cooling heat exchanger.
Preferably, described the first outdoor fan is identical with the model of described the second outdoor fan.
Preferably, the model of described the first cross valve, described the second cross valve, described the 3rd cross valve and described the 4th cross valve is all identical.
Preferably, the model of described the first cross valve, described the second cross valve, described the 3rd cross valve and described the 4th cross valve is incomplete same.
Can find out from above-mentioned technical scheme, the invention provides a kind of Air-Cooled Heat Pump Unit, comprise: a compressor or multiple parallel connection compressor, two separate air cooling heat exchangers, two separate outdoor fans, water cooling heat exchanger and four cross valves, the present invention is by replacing two air cooling heat exchangers an original air cooling heat exchanger, make Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, by cutting off an air cooling heat exchanger, reach the object that reduces air cooling heat exchanger area, thereby reduction system is returned the risk of liquid refrigerants; When Air-Cooled Heat Pump Unit is during at high temperature water heating, by using an air cooling heat exchanger as evaporimeter, a heat exchanger, as condenser, is realized system pressure and suction temperature control is maintained in the reasonable scope; When Air-Cooled Heat Pump Unit is during at low-temperature heating water, the in the situation that of needing defrost after water cooling heat exchanger frosting, by by an air cooling heat exchanger defrost, an air cooler continues to heat, meet unit and can continue to provide the demand of hot water, thereby ensured user's comfort level.Therefore, Air-Cooled Heat Pump Unit provided by the invention effectively improves the reliability of Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, high temperature water heating and low-temperature heating water.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the disclosed a kind of Air-Cooled Heat Pump Unit of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of Air-Cooled Heat Pump Unit, to solve the reliability low problem of Air-Cooled Heat Pump Unit when cryogenic refrigeration water, high temperature water heating and the low-temperature heating water.
Referring to Fig. 1, the embodiment of the invention discloses a kind of structural representation of Air-Cooled Heat Pump Unit, Air-Cooled Heat Pump Unit comprises:
A compressor 1 or multiple parallel connection compressor, for example Fig. 1 illustrates two compressors that are connected in parallel 1;
The first air cooling heat exchanger 2;
The first outdoor fan 3, the first outdoor fans 3 are for giving the first air cooling heat exchanger 2 enhanced heat exchanges;
The second air cooling heat exchanger 4, the second air cooling heat exchangers 4 and the first air cooling heat exchanger 2 are separate;
The second outdoor fan 5, the second outdoor fans 5 and the first outdoor fan 3 are separate, and the second outdoor fan 5 is for giving the second air cooling heat exchanger semi-finals heat exchange;
Water cooling heat exchanger 6, the input of water cooling heat exchanger 6 is connected with the first air cooling heat exchanger 2, the second air cooling heat exchanger 4 respectively;
Wherein, the import of water cooling heat exchanger 6 current and exporting in Fig. 1 shown in arrow.
The first cross valve 7, the first end D of the first cross valve 7 connects compressor 1 or the exhaust outlet of multiple parallel connection compressors, the second end E of the first cross valve 7 connects the first air cooling heat exchanger 2, the first cross valves 7 and uses or use as evaporimeter as condenser for controlling the first air cooling heat exchanger 2;
The second cross valve 8, the first end D of the second cross valve 8 connects compressor 1 or the exhaust outlet of multiple parallel connection compressors, the second end E of the second cross valve 8 connects the second air cooling heat exchanger 4, the second cross valves 8 and uses or use as evaporimeter as condenser for controlling the second air cooling heat exchanger 4;
The 4th cross valve 9, the first end D of the 4th cross valve 9 connects the output of water cooling heat exchanger 6, the 3rd end C of the 4th cross valve 9 and the common port of the 4th end S are connected respectively the 3rd end C of the first cross valve 7 and the common port of the 4th end S, the 3rd end C of the second cross valve 8 and the common port of the 4th end S, and the 4th cross valve 9 uses or uses as evaporimeter as condenser for controlling water cooling heat exchanger 6;
The 3rd cross valve 10, the first end D of the 3rd cross valve 10 connects compressor 1 or the exhaust outlet of multiple parallel connection compressors, the second end E of the 3rd cross valve 10 connects the second end E of the 4th cross valve 9, the 3rd end C of the 3rd cross valve 10 and the common port of the 4th end S are connected respectively the 3rd end C of the 4th cross valve 9 and common port, compressor 1 or the gas returning port of multiple parallel connection compressors of the 4th end S, and the 3rd cross valve 10 is for controlling water cooling heat exchanger 6 water heatings.
It should be noted that, cross valve (for example above-mentioned the first cross valve 7, the second cross valve 8, the 3rd cross valve 10 and the 4th cross valve 9) in power down, first end D and the 3rd end C conducting, the second end E and the 4th end S conducting;
Cross valve in powering on, first end D and the second end E conducting, the 3rd end C and the 4th end S conducting.
Preferably, in the present embodiment, water cooling heat exchanger 6 can be plate type heat exchanger, double-tube heat exchanger or shell and tube exchanger etc.
In summary it can be seen, the present invention, by two air cooling heat exchangers being replaced to an original air cooling heat exchanger, makes Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, by cutting off an air cooling heat exchanger, reach the object that reduces air cooling heat exchanger area, thereby reduction system is returned the risk of liquid refrigerants; When Air-Cooled Heat Pump Unit is during at high temperature water heating, by using an air cooling heat exchanger as evaporimeter, a heat exchanger, as condenser, is realized system pressure and suction temperature control is maintained in the reasonable scope; When Air-Cooled Heat Pump Unit is during at low-temperature heating water, the in the situation that of needing defrost after water cooling heat exchanger frosting, by by an air cooling heat exchanger defrost, an air cooler continues to heat, meet unit and can continue to provide the demand of hot water, thereby ensured user's comfort level.Therefore, Air-Cooled Heat Pump Unit provided by the invention effectively improves the reliability of Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, high temperature water heating and low-temperature heating water.
It will be understood by those skilled in the art that, for ensureing that the first air cooling heat exchanger 2 and the second air cooling heat exchanger 4 have good refrigeration in the time using as condenser, or there is good heating effect while using as evaporimeter, therefore, control that to flow through the cold medium flux of the first air cooling heat exchanger 2 and the second air cooling heat exchanger 4 most important.
Therefore, the first air cooling heat exchanger 2 is connected with the input of water cooling heat exchanger 6 by the first electric expansion valve 11, and the first electric expansion valve 11 is for controlling the cold medium flux that flows through the first air cooling heat exchanger 2.
In like manner, the second air cooling heat exchanger 4 is connected with the input of water cooling heat exchanger 6 by the second electric expansion valve 12, and the second electric expansion valve 12 is for controlling the cold medium flux that flows through the second air cooling heat exchanger 4.
For further optimizing above-described embodiment, also comprise: gas-liquid separator 13;
The import of gas-liquid separator 13 connects the 3rd end C of the 3rd cross valve 10 and the common port of the 4th end S, and the outlet of gas-liquid separator 13 connects the gas returning port of compressor 1 or parallel connection compressor.
Gas-liquid separator 13 is for carrying out gas-liquid separation to the gaseous coolant of the gas returning port that flows into compressor 1 or parallel connection compressor.
Air-Cooled Heat Pump Unit is specific as follows in the loop control of chilled water and water heating:
Air-Cooled Heat Pump Unit in the time of chilled water, the first cross valve 7 and the second cross valve 8 power down, the first electric expansion valve 11 and the second electric expansion valve 12 are opened under the control of electric-control system, the 4th cross valve 9 power down, the 3rd cross valve 10 power on.A refrigerant part for the HTHP that compressor 1 is got rid of to after the first air cooling heat exchanger 2 condensations through the first electric expansion valve 11 reducing pressure by regulating flows, a part to after the second air cooling heat exchanger 4 condensations through the second electric expansion valve 12 reducing pressure by regulating flows, liquid refrigerants after two air cooling heat exchanger reducing pressure by regulating flows is to water cooling heat exchanger 6 devaporation heat absorptions, after evaporation endothermic, become gaseous coolant and get back to gas-liquid separator 13 through the 4th cross valve 9, finally get back to compressor 1 and complete kind of refrigeration cycle, reach the object of Air-Cooled Heat Pump Unit chilled water.
Air-Cooled Heat Pump Unit in the time of hot water, the 3rd cross valve 10 power down, the 4th cross valve 9 powers on, the first electric expansion valve 11, the second electric expansion valve 12 are opened under the control of electric-control system, the first cross valve 7, the second cross valve 8 power on.The refrigerant of the HTHP that compressor 1 is got rid of arrives water cooling heat exchanger 6 condensations after the 3rd cross valve 10, the 4th cross valve 9, a part is got back to gas-liquid separator 13 through the first cross valve 7 after the first electric expansion valve 11 reducing pressure by regulating flows after the first air cooling heat exchanger 2 evaporation endothermics, a part is got back to gas-liquid separator 13 through the second cross valve 8 after the second electric expansion valve 12 reducing pressure by regulating flows after the second air cooling heat exchanger 4 evaporation endothermics, finally get back to compressor 1 and complete and heat circulation, reach the object of Air-Cooled Heat Pump Unit water heating.
The detailed process that Air-Cooled Heat Pump Unit disclosed by the invention improves the reliability of Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, high temperature water heating and low-temperature heating water is as follows:
Air-Cooled Heat Pump Unit is in the time of cryogenic refrigeration water, air-cooled side environment temperature is low, two air cooling heat exchangers, without all making condenser, now, can be closed an air cooling heat exchanger, such as closing the second air cooling heat exchanger 4, the first cross valve 7 power down of Air-Cooled Heat Pump Unit, the second cross valve 8 powers on, and the first electric expansion valve 11 is opened under the control of electric-control system, the second electric expansion valve 12 is closed, and the 4th cross valve 9 power down, the 3rd cross valve 10 power on.The refrigerant of the HTHP that compressor 1 is got rid of all to after the first air cooling heat exchanger 2 condensations through the first electric expansion valve 11 reducing pressure by regulating flows, the liquid refrigerants of refrigerant after the first air cooling heat exchanger 2 reducing pressure by regulating flows is to water cooling heat exchanger 6 devaporation heat absorptions, after evaporation endothermic, become gaseous coolant and get back to gas-liquid separator 13 through the 4th cross valve 9, finally get back to compressor 1 and complete kind of refrigeration cycle, reach the object of Air-Cooled Heat Pump Unit chilled water.Also ensured the system reliability of chilled water under low ambient temperature simultaneously.
Wherein, because the second cross valve 8 powers on, the second electric expansion valve 12 is closed, the HTHP refrigerant that compressor 1 is got rid of is fallen by capillary pipe plug the second cross valve 8 is interior, the excessively a small amount of refrigerant of refrigeration stream is got back to gas-liquid separator 13 through capillary, and refrigerant in the second air cooling heat exchanger 4 is got back to gas-liquid separator 13 after the second cross valve 8, refrigerant is namely equivalent to not circulate in the second air cooling heat exchanger 4.
Air-Cooled Heat Pump Unit is in the time of high temperature water heating, and water cooling heat exchanger 6 is made condenser, and air cooling heat exchanger is made evaporimeter, air-cooled side environment temperature is high, and evaporation effect is good, and compressor 1 delivery temperature is high, pressure at expulsion is high, can increase like this condenser area, reduce evaporator area.Such as using the first air cooling heat exchanger 2 as evaporimeter, the second air cooling heat exchanger 4 is as condenser, and water cooling heat exchanger 6 is as condenser.Control procedure is as follows: the 3rd cross valve 10 power down, the 4th cross valve 9 powers on, the first electric expansion valve 11, the second electric expansion valve 12 is opened under the control of electric-control system, the first cross valve 7 powers on, the second cross valve 8 power down, the HTHP refrigerant part that compressor 1 is got rid of is through the 3rd cross valve 10, after the 4th cross valve 9, arrive the interior condensation of water cooling heat exchanger 6, a part after the second cross valve 8 to after the second air cooling heat exchanger 4 through the second electric expansion valve 12, two-way refrigerant is finally joined between the second electric expansion valve 12 and the first electric expansion valve 11, then after the first electric expansion valve 11 reducing pressure by regulating flows to the interior evaporation endothermic of the first air cooling heat exchanger 2, after after the first cross valve 7, get back to and get back to compressor 1 after gas-liquid separator 13 and complete whole refrigerant circulation.
Air-Cooled Heat Pump Unit is in the time of low-temperature heating water, basic controlling is with Air-Cooled Heat Pump Unit water heating, but because air-cooled side environment temperature is low, air cooling heat exchanger meeting frosting, if two air cooling heat exchangers go out frost and can cause the water in water cooling heat exchanger 6 to become cold water simultaneously, have influence on like this Air-Cooled Heat Pump Unit and can not continue water heating, and then affect user's comfortableness.In the time that air cooling heat exchanger needs defrost, can defrost as condenser by an air cooling heat exchanger, another air cooling heat exchanger is as evaporimeter, thus guarantee system continues water heating.Wherein, the defrost process when process of air cooling heat exchanger defrost is shown in Air-Cooled Heat Pump Unit water heating repeats no more herein.
In summary it can be seen, the present invention, by two air cooling heat exchangers being replaced to an original air cooling heat exchanger, makes Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, by cutting off an air cooling heat exchanger, reach the object that reduces air cooling heat exchanger area, thereby reduction system is returned the risk of liquid refrigerants; When Air-Cooled Heat Pump Unit is during at high temperature water heating, by using an air cooling heat exchanger as evaporimeter, a heat exchanger, as condenser, is realized system pressure and suction temperature control is maintained in the reasonable scope; When Air-Cooled Heat Pump Unit is during at low-temperature heating water, the in the situation that of needing defrost after water cooling heat exchanger frosting, by by an air cooling heat exchanger defrost, an air cooler continues to heat, meet unit and can continue to provide the demand of hot water, thereby ensured user's comfort level.Therefore, Air-Cooled Heat Pump Unit provided by the invention effectively improves the reliability of Air-Cooled Heat Pump Unit in the time of cryogenic refrigeration water, high temperature water heating and low-temperature heating water.
It will be appreciated by persons skilled in the art that hypertonia or the too low stable operation that all can affect Air-Cooled Heat Pump Unit in Air-Cooled Heat Pump Unit.Therefore, the present invention ensures the reliable and stable operation of Air-Cooled Heat Pump Unit, in the above-described embodiments:
On the link circuit of gas-liquid separator 13 outlet and the gas returning port of compressor 1 or parallel connection compressor, low pressure switch 21 is installed.
When the gas pressure between gas-liquid separator 13 outlet and the gas returning port of compressor 1 or parallel connection compressor is during lower than preset value; low pressure switch 21 disconnects automatically; and send a pressure signal to electric-control system; thereby electric-control system is taked corresponding safeguard measure according to the pressure signal receiving; for example, turn off compressor 1.
The common port of the first cross valve 7, the second cross valve 8 and the 3rd cross valve 10 is provided with high-pressure switch 22.
When the pressure of the gas of getting rid of when compressor 1 or parallel connection compressor was looked into preset value; high-pressure switch 22 disconnects automatically, and sends a pressure signal to electric-control system, thereby electric-control system is taked corresponding safeguard measure according to the pressure signal receiving; for example, turn off compressor 1.
It should be noted is that, in above-described embodiment, the model of the first air cooling heat exchanger 2 and the second air cooling heat exchanger 4 can be identical, also can be different.Wherein, preferred same model.
The model of the first outdoor fan 3 and the second outdoor fan 5 can be identical, also can be different, do not limit herein.
In like manner, the model of the first cross valve 7, the second cross valve 8, the 3rd cross valve 10 and the 4th cross valve 9 can be all identical or entirely not identical, or incomplete same, do not limit herein.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an Air-Cooled Heat Pump Unit, is characterized in that, comprising:
A compressor or multiple parallel connection compressor;
The first air cooling heat exchanger;
The first outdoor fan, described the first outdoor fan is used for to described the first air cooling heat exchanger enhanced heat exchange;
The second air cooling heat exchanger, described the second air cooling heat exchanger and described the first air cooling heat exchanger are separate;
The second outdoor fan, described the second outdoor fan and described the first outdoor fan are separate, and described the second outdoor fan is used for to described the second air cooling heat exchanger enhanced heat exchange;
Water cooling heat exchanger, the input of described water cooling heat exchanger is connected with described the first air cooling heat exchanger, described the second air cooling heat exchanger respectively;
The first cross valve, the first end of described the first cross valve connects the exhaust outlet of described compressor or described parallel connection compressor, the second end of described the first cross valve connects described the first air cooling heat exchanger, and described the first cross valve is used for controlling described the first air cooling heat exchanger and uses or use as evaporimeter as condenser;
The second cross valve, the first end of described the second cross valve connects the exhaust outlet of described compressor or described parallel connection compressor, the second end of described the second cross valve connects described the second air cooling heat exchanger, and described the second cross valve is used for controlling described the second air cooling heat exchanger and uses or use as evaporimeter as condenser;
The 4th cross valve, the first end of described the 4th cross valve connects the output of described water cooling heat exchanger, the 3rd end of described the 4th cross valve and the common port of the 4th end are connected respectively the 3rd end of described the first cross valve and the common port of the 4th end, the 3rd end of described the second cross valve and the common port of the 4th end, and described the 4th cross valve is used for controlling described water cooling heat exchanger and uses or use as evaporimeter as condenser;
The 3rd cross valve, the first end of described the 3rd cross valve connects the exhaust outlet of described compressor or described parallel connection compressor, the second end of described the 3rd cross valve connects the second end of described the 4th cross valve, the 3rd end of described the 3rd cross valve and the common port of the 4th end are connected respectively the 3rd end of described the 4th cross valve and the gas returning port of the common port of the 4th end, described compressor or described parallel connection compressor, and described the 3rd cross valve is used for controlling described water cooling heat exchanger water heating.
2. Air-Cooled Heat Pump Unit according to claim 1, it is characterized in that, described the first air cooling heat exchanger is connected with the input of described water cooling heat exchanger by the first electric expansion valve, and described the first electric expansion valve is for controlling the cold medium flux that flows through described the first air cooling heat exchanger.
3. Air-Cooled Heat Pump Unit according to claim 1, it is characterized in that, described the second air cooling heat exchanger is connected with the input of described water cooling heat exchanger by the second electric expansion valve, and described the second electric expansion valve is for controlling the cold medium flux that flows through described the second air cooling heat exchanger.
4. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, also comprises gas-liquid separator;
The import of described gas-liquid separator connects the 3rd end of described the 3rd cross valve and the common port of the 4th end, and the outlet of described gas-liquid separator connects the gas returning port of described compressor or described parallel connection compressor.
5. Air-Cooled Heat Pump Unit according to claim 4, is characterized in that, on the link circuit of the gas returning port of described gas-liquid separator outlet and described compressor or described parallel connection compressor, low pressure switch is installed.
6. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the common port of described the first cross valve, described the second cross valve and described the 3rd cross valve is provided with high-pressure switch.
7. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, described the first air cooling heat exchanger is identical with the model of described the second air cooling heat exchanger.
8. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, described the first outdoor fan is identical with the model of described the second outdoor fan.
9. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the model of described the first cross valve, described the second cross valve, described the 3rd cross valve and described the 4th cross valve is all identical.
10. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the model of described the first cross valve, described the second cross valve, described the 3rd cross valve and described the 4th cross valve is incomplete same.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104180560A (en) * | 2014-09-01 | 2014-12-03 | 广东志高暖通设备股份有限公司 | Multi-unit system |
| CN104180559A (en) * | 2014-09-01 | 2014-12-03 | 广东志高暖通设备股份有限公司 | Multi-unit system |
| CN104180455A (en) * | 2014-09-01 | 2014-12-03 | 广东志高暖通设备股份有限公司 | Air cooling heat pump unit |
| CN105674614A (en) * | 2016-04-06 | 2016-06-15 | 广东志高暖通设备股份有限公司 | Air-cooled heat pump unit |
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| CN102778087A (en) * | 2012-07-11 | 2012-11-14 | 广州万宝集团有限公司 | Transcritical CO2 heat pump air heating system and air cooling device |
| CN102901168A (en) * | 2012-09-28 | 2013-01-30 | 中国扬子集团滁州扬子空调器有限公司 | Air-cooled heat pump cold/hot water machine set for improving partial load performance and control method thereof |
| CN202973694U (en) * | 2012-12-17 | 2013-06-05 | 广州科力新能源有限公司 | Double-fin double-fan hot pump system capable of defrosting in complementary mode |
| CN203286825U (en) * | 2013-05-15 | 2013-11-13 | 东南大学 | Defrosting device of air source heat pump |
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| CN104180560A (en) * | 2014-09-01 | 2014-12-03 | 广东志高暖通设备股份有限公司 | Multi-unit system |
| CN104180559A (en) * | 2014-09-01 | 2014-12-03 | 广东志高暖通设备股份有限公司 | Multi-unit system |
| CN104180455A (en) * | 2014-09-01 | 2014-12-03 | 广东志高暖通设备股份有限公司 | Air cooling heat pump unit |
| CN105674614A (en) * | 2016-04-06 | 2016-06-15 | 广东志高暖通设备股份有限公司 | Air-cooled heat pump unit |
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