CN104154620A - Air cooled heat pump unit - Google Patents
Air cooled heat pump unit Download PDFInfo
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- CN104154620A CN104154620A CN201410440798.1A CN201410440798A CN104154620A CN 104154620 A CN104154620 A CN 104154620A CN 201410440798 A CN201410440798 A CN 201410440798A CN 104154620 A CN104154620 A CN 104154620A
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Abstract
The invention provides an air cooled heat pump unit. According to the air cooled heat pump unit, an original air cooled heat exchanger is replaced with two air cooled heat exchangers, so that the purpose that the air cooled heat exchanger area is reduced by switching off one air cooled heat exchanger when low-temperature refrigeration is conducted on water by the air cooled heat pump unit is achieved, and then the risk of liquid coolant returning of a system is reduced; when high-temperature heating is conducted on water by the air cooled heat pump unit, the purpose that system pressure and back temperature are controlled to be within a reasonable range is achieved by taking one air cooled heat exchanger as an evaporator and the other air cooled heat exchanger as a condenser; when low-temperature heating is conducted on water by the air cooled heat pump unit, the requirement that the unit can provide hot water continuously is met by using one air cooled heat exchanger for defrosting and continuing to use the other air cooled heat exchanger for heating under the condition that a water cooled heat exchanger is frosted and needs to be defrosted.
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.
Summary of the invention
The invention provides a kind of Air-Cooled Heat Pump Unit, comprise: for the compressor of cold-producing medium is provided to system, for the first air cooling heat exchanger that uses or use as condenser as heat exchanger, for the first outdoor fan to described the first air cooling heat exchanger heat exchange, for the second air cooling heat exchanger that uses or use as condenser as heat exchanger, for the second outdoor fan to described the second air cooling heat exchanger heat exchange, water cooling heat exchanger, the first cross valve, the first magnetic valve, the second magnetic valve, the second cross valve;
The quantity of described compressor is at least two, each described compressor can provide cold-producing medium to system simultaneously, and described compressor composition compressor bank, and the output of each described compressor and air return end are accumulated to the output of compressor bank and the air return end of compressor bank;
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 end of described the first cross valve is connected with described compressor bank output, and the second end of described the first cross valve is connected with 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 as condenser;
The entrance point of described the first magnetic valve is connected with described compressor bank output, and the port of export of described the first magnetic valve is connected with described the second air cooling heat exchanger, and described the first magnetic valve is used for controlling described the second air cooling heat exchanger and uses as condenser;
The entrance point of described the second magnetic valve is connected with described the second air cooling heat exchanger and described the first electromagnetic valve outlet end, the port of export of described the second magnetic valve is connected with the air return end of described compressor bank, and described the second magnetic valve is used for controlling described the second air cooling heat exchanger and uses as evaporimeter;
The first end of described the second cross valve is connected with described compressor bank output, the 3rd end of described the second cross valve is connected with the output of described water cooling heat exchanger, the second end of described the second cross valve is connected with the 3rd end and the 4th end, the output of described the second magnetic valve and the air return end of described compressor bank of described the first cross valve with the 4th end, and described the second cross valve is used for controlling described water cooling heat exchanger water heating.
Preferably, also comprise: the first electric expansion valve;
Described the first air cooling heat exchanger is connected with the input of described water cooling heat exchanger by described 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, also comprise: the second electric expansion valve;
Described the second air cooling heat exchanger is connected with the input of described water cooling heat exchanger by described 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 entrance point of described gas-liquid separator is connected with output, the 3rd end of the first cross valve and the second end of the 4th end and the second cross valve and the 4th end of described the second magnetic valve, and the outlet of described gas-liquid separator is connected with the air return end of described compressor bank.
Preferably, on the link circuit of the air return end of described gas-liquid separator outlet and described compressor bank, be provided with low pressure switch and low-pressure sensor;
Described low-pressure sensor detects pressure size between described gas-liquid separator outlet and described compressor bank air return end;
Described low tension switch, for according to the pressure size detecting, is controlled pipeline between the described gas-liquid separator port of export and described compressor bank air return end and is opened and turn-off.
Preferably, described compressor bank output is provided with high-pressure switch and high-pressure sensor;
Described high-pressure sensor is for detection of the pressure size of described compressor bank output;
Described high-pressure switch, for according to the pressure size detecting, is controlled described compressor bank opening and closing.
Preferably, the model of described the first air cooling heat exchanger and described the second air cooling heat exchanger is identical or different.
Preferably, the model of described the first outdoor fan and described the second outdoor fan is identical or different.
Preferably, the model of described the first magnetic valve and described the second magnetic valve is identical or different.
Preferably, the model of described the first cross valve and described the second cross valve is identical or different.
As can be seen from the above technical solutions, the present invention has the following advantages:
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 cooling heat exchanger 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.
In the present invention, the output of water cooling heat exchanger is connected with the 3rd end of the second cross valve, the second end of the second cross valve is connected with the 3rd end and the 4th end, the output of the second magnetic valve and the air return end of compressor bank of the first cross valve with the 4th end, refrigerant is after water cooling heat exchanger evaporation endothermic or condensation like this, complete refrigeration or heat process, getting back to compressor bank by the second cross valve and complete circulation.Because refrigerant is after water cooling heat exchanger evaporation endothermic or condensation, directly get back to compressor bank by the second cross valve and complete circulation, improve the chilled water of Air-Cooled Heat Pump Unit or the efficiency of water heating, reduce the cost of chilled water or water heating.Water cooling heat exchanger is directly connected with the second cross valve, optimizes the structure of Air-Cooled Heat Pump Unit, has avoided causing affecting the reduction of unit cycle efficieny, the defect that fault rate increases due to other valves or control assembly being set between water cooling heat exchanger and the second cross valve.
Term " first " in description of the present invention and claims and above-mentioned accompanying drawing, " second ", " the 3rd " " 4th " etc. (if existence) are for distinguishing similar object, and needn't be used for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so as embodiments of the invention described herein can with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, is intended to be to cover not exclusive comprising.
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.
Brief description of the drawings
In order to be illustrated more clearly in technical scheme of the present invention, to the accompanying drawing of required use in describing 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
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable; to use specific embodiment and accompanying drawing below; technical scheme to the present invention's protection is clearly and completely described; obviously; the embodiments described below are only the present invention's part embodiment, but not whole embodiment.Based on the embodiment in this patent, those of ordinary skill in the art are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of this patent protection.
The present embodiment provides a kind of Air-Cooled Heat Pump Unit, refer to shown in Fig. 1, comprise: for the compressor of cold-producing medium is provided to system, for the first air cooling heat exchanger 2 that uses or use as condenser as heat exchanger, for the first outdoor fan 3 to described the first air cooling heat exchanger 2 enhanced heat exchanges, for the second air cooling heat exchanger 4 that uses or use as condenser as heat exchanger, for the second outdoor fan 5 to described the second air cooling heat exchanger semi-finals heat exchange, water cooling heat exchanger 6, the first cross valve 7, the first magnetic valve 8, the second magnetic valve 10, the second cross valve 11,
The quantity of described compressor is at least two, each described compressor can provide cold-producing medium to system simultaneously, and described compressor composition compressor bank 1, and the output of each described compressor and air return end are accumulated to the output of compressor bank 1 and the air return end of compressor bank 1;
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 end 7D of the first cross valve 7 connects compressor bank 1 output, and the second end 7C 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 entrance point of the first magnetic valve 8 connects compressor bank 1 output, and the port of export of the first magnetic valve 8 connects the second air cooling heat exchanger 4, the first magnetic valves 8 and uses as condenser for controlling the second air cooling heat exchanger 4;
The entrance point of the second magnetic valve 10 is connected with the second air cooling heat exchanger 4 and first magnetic valve 8 ports of export, and the port of export of the second magnetic valve 10 connects the air return end of compressor bank 1, and the second magnetic valve 10 uses as evaporimeter for controlling the second air cooling heat exchanger 4;
The first end 11D of the second cross valve 11 is connected with compressor bank 1 output, the 3rd end 11E of the second cross valve 11 is connected with the output of water cooling heat exchanger 6, the second end 11C of the second cross valve 11 is connected with the 3rd end 7E and the 4th end 7S, the output of the second magnetic valve 10 and the air return end of compressor bank 1 of the first cross valve 7 with the 4th end 11S, and the second cross valve 11 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 11) in power down, first end D and the second end C conducting, the 3rd end E and the 4th end S conducting; Cross valve in powering on, first end D and the 3rd end E conducting, the 3rd end E 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 cooling heat exchanger 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.
In the present embodiment, the output of water cooling heat exchanger 6 is connected with the 3rd end 11E of the second cross valve 11, the second end 11C of the second cross valve 11 is connected with the 3rd end 7E and the 4th end 7S, the output of the second magnetic valve 8 and the air return end of compressor bank 1 of the first cross valve 7 with the 4th end 11S, refrigerant is after water cooling heat exchanger 6 evaporation endothermics or condensation like this, complete refrigeration or heat process, getting back to compressor bank 1 by the second cross valve 11 and complete circulation.Because refrigerant is after water cooling heat exchanger 6 evaporation endothermics or condensation, directly get back to compressor bank 1 by the second cross valve 11 and complete circulation, improve the chilled water of Air-Cooled Heat Pump Unit or the efficiency of water heating, reduce the cost of chilled water or water heating.Water cooling heat exchanger 6 is directly connected with the second cross valve 11, optimize the structure of Air-Cooled Heat Pump Unit, avoid causing affecting the reduction of unit cycle efficieny, the defect that fault rate increases due to other valves or control assembly being set between water cooling heat exchanger 6 and the second cross valve 11.
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 12, and the first electric expansion valve 12 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 13, and the second electric expansion valve 13 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 14; The entrance point of described gas-liquid separator 14 is connected with output, the 3rd end 7E of the first cross valve 7 and the second end 11C and the 4th end 11S of the 4th end 7S and the second cross valve 11 of described the second magnetic valve 10, and the outlet of described gas-liquid separator 14 is connected with the air return end of described compressor bank 1.Gas-liquid separator 14 is for carrying out gas-liquid separation to the gaseous coolant that flows into compressor bank 1 air return end.
In order to absolutely prove the cyclic process of Air-Cooled Heat Pump Unit at chilled water and water heating, below with concrete embodiment explanation.
When Air-Cooled Heat Pump Unit chilled water, the first cross valve 7 power down, the first magnetic valve 8 powers on, the second magnetic valve 10 power down, the second cross valve 11 power down, the first electric expansion valve 12 and the second electric expansion valve 13 are opened under the control of electric-control system, a refrigerant part for the HTHP that compressor bank 1 is got rid of to after the first air cooling heat exchanger 2 condensations through the first electric expansion valve 12 reducing pressure by regulating flows, a part to after the second air cooling heat exchanger 4 condensations through the second electric expansion valve 13 reducing pressure by regulating flows, liquid refrigerants after the first air cooling heat exchanger 2 and the second air cooling heat exchanger 4 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 14 through the second cross valve 11, finally get back to compressor bank 1 and complete kind of refrigeration cycle, reach the object of Air-Cooled Heat Pump Unit chilled water.
It should be noted that, due to the second cross valve 11 power down, the first end 11D of the second cross valve 11 and the second end 11C conducting, the HTHP refrigerant that compressor bank 1 is got rid of is fallen by capillary pipe plug cross valve 11 is interior, and the excessively a small amount of refrigerant of refrigeration stream is got back to gas-liquid separator 14 through capillary.
When Air-Cooled Heat Pump Unit water heating, the first cross valve 7 powers on, the first magnetic valve 8 power down, and the second magnetic valve 10 powers on, and the second cross valve 11 powers on, and the first electric expansion valve 12, the second electric expansion valve 13 are opened under the control of electric-control system.The refrigerant of the HTHP that compressor bank 1 is got rid of arrives water cooling heat exchanger 6 condensations after the second cross valve 11, a part is got back to gas-liquid separator 14 through the first cross valve 7 after the first electric expansion valve 12 reducing pressure by regulating flows after the first air cooling heat exchanger 2 evaporation endothermics, a part is got back to gas-liquid separator 14 through the second magnetic valve 10 after the second electric expansion valve 13 reducing pressure by regulating flows after the second air cooling heat exchanger 4 evaporation endothermics, finally get back to compressor bank 1 and complete and heat circulation, reach the object of 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:
In the time of Air-Cooled Heat Pump Unit cryogenic refrigeration water, air-cooled side environment temperature is low, does not need all to do condenser, now, can close an air-cooled side heat exchanger, such as closing the second air cooling heat exchanger 4.Air-Cooled Heat Pump Unit the first cross valve 7 power down, the first magnetic valve 8 power down, the second magnetic valve 10 powers on, the second cross valve 11 power down, the first electric expansion valve 12 is opened under the control of electric-control system, and the second electric expansion valve 13 is closed.The refrigerant of the HTHP that compressor bank 1 is got rid of all to after the first air cooling heat exchanger 2 condensations through the first electric expansion valve 12 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 14 through the second cross valve 11, finally get back to compressor bank 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.
It should be noted that, because the second electric expansion valve 13 is closed, and the first magnetic valve 8 cuts out, and the second magnetic valve 10 is opened, refrigerant in the second air cooling heat exchanger 4 is got back to gas-liquid separator 14 after the second magnetic valve 10, and refrigerant is namely equivalent to not circulate in the second air cooling heat exchanger 4.
In the time of Air-Cooled Heat Pump Unit high temperature water heating, water cooling heat exchanger 6 makees condenser, and air cooling heat exchanger makees evaporimeter, air-cooled side environment temperature is high, and evaporation effect is good, and compressor bank 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 first cross valve 7 powers on, the first magnetic valve 8 powers on, the second magnetic valve 10 power down, the second cross valve 11 powers on, the first electric expansion valve 12, the second electric expansion valve 13 are opened under the control of electric-control system, the HTHP refrigerant part that compressor bank 1 is got rid of arrives the interior condensation of water cooling heat exchanger 6 after the second cross valve 11, a part after the first magnetic valve 8 to after the second air cooling heat exchanger 4 condensations through the second electric expansion valve 13, two-way refrigerant is finally joined between the second electric expansion valve 13 and the first electric expansion valve 12.Then after the first electric expansion valve 12 reducing pressure by regulating flows, get back to compressor bank 1 after gas-liquid separator 14 and complete whole refrigerant circulation to getting back to after the first cross valve 7 after the interior evaporation endothermic of the first air cooling heat exchanger 2.
In the time of Air-Cooled Heat Pump Unit low-temperature heating water, basic controlling process is during referring to above-mentioned 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 (the first air cooling heat exchanger 2 and the second air cooling heat exchanger 4) defrost simultaneously, can cause the water in water cooling heat exchanger 6 to become cold water, can have influence on like this Air-Cooled Heat Pump Unit and can not continue water heating, affect user's comfortableness.In the time that air cooling heat exchanger needs defrost, can allow an air cooling heat exchanger make condenser and defrost, an air cooling heat exchanger makees evaporimeter, thereby ensures that electric-control system continues water heating.The specifically cyclic process when the high temperature water heating referring to Air-Cooled Heat Pump Unit of air cooling heat exchanger defrost process 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 cooling heat exchanger 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 the air return end of described gas-liquid separator 14 outlets and described compressor bank 1, be provided with low pressure switch 21 and low-pressure sensor 20;
Described low-pressure sensor 20 detects pressure size between described gas-liquid separator 14 outlets and described compressor bank 1 air return end;
Described low tension switch 21, for according to the pressure size detecting, is controlled pipeline between described gas-liquid separator 14 ports of export and described compressor bank 1 air return end and is opened and turn-off.
When the gas pressure between gas-liquid separator 14 outlet and compressor bank 1 air return end is during lower than preset value; the preset value here can be set according to the actual needs of Air-Cooled Heat Pump Unit chilled water or water heating; 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 bank 1.
Certainly all right; the system low-voltage pressure that Air-Cooled Heat Pump Unit can also be fed back by real-time detection low-pressure sensor 20; after the logic control computing of participation system, make corresponding control or protection; such as low pressure being detected, adjust in real time the aperture size of the first electric expansion valve 12 and the second electric expansion valve 13 by logical operation.
In the present embodiment, compressor bank 1 output is provided with high-pressure switch 22 and high-pressure sensor 23; Described high-pressure sensor 23 is for detection of the pressure size of described compressor bank 1 output; Described high-pressure switch 22, for according to the pressure size detecting, is controlled described compressor bank 1 opening and closing.
When the pressure of the gas of exporting when compressor bank 1 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 bank 1.
Certainly the system high pressure pressure that Air-Cooled Heat Pump Unit can also be fed back by real-time detection high-pressure sensor 23; after the logic control computing of participation system, make corresponding control or protection; such as high-pressure being detected, adjust in real time the aperture size of the first electric expansion valve 12 and the second electric expansion valve 13 by logical operation.
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.The identical or different model of model of the first cross valve 7 and the second cross valve 11 does not limit herein.The identical or different model of model of the first magnetic valve 8 and the second magnetic valve 10 does 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.
Claims (10)
1. an Air-Cooled Heat Pump Unit, it is characterized in that, comprise: for the compressor of cold-producing medium is provided to system, for the first air cooling heat exchanger that uses or use as condenser as heat exchanger, for the first outdoor fan to described the first air cooling heat exchanger heat exchange, for the second air cooling heat exchanger that uses or use as condenser as heat exchanger, for the second outdoor fan to described the second air cooling heat exchanger heat exchange, water cooling heat exchanger, the first cross valve, the first magnetic valve, the second magnetic valve, the second cross valve;
The quantity of described compressor is at least two, each described compressor can provide cold-producing medium to system simultaneously, and described compressor composition compressor bank, and the output of each described compressor and air return end are accumulated to the output of compressor bank and the air return end of compressor bank;
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 end of described the first cross valve is connected with described compressor bank output, and the second end of described the first cross valve is connected with 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 as condenser;
The entrance point of described the first magnetic valve is connected with described compressor bank output, and the port of export of described the first magnetic valve is connected with described the second air cooling heat exchanger, and described the first magnetic valve is used for controlling described the second air cooling heat exchanger and uses as condenser;
The entrance point of described the second magnetic valve is connected with described the second air cooling heat exchanger and described the first electromagnetic valve outlet end, the port of export of described the second magnetic valve is connected with the air return end of described compressor bank, and described the second magnetic valve is used for controlling described the second air cooling heat exchanger and uses as evaporimeter;
The first end of described the second cross valve is connected with described compressor bank output, the 3rd end of described the second cross valve is connected with the output of described water cooling heat exchanger, the second end of described the second cross valve is connected with the 3rd end and the 4th end, the output of described the second magnetic valve and the air return end of described compressor bank of described the first cross valve with the 4th end, and described the second cross valve is used for controlling described water cooling heat exchanger water heating.
2. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that,
Also comprise: the first electric expansion valve;
Described the first air cooling heat exchanger is connected with the input of described water cooling heat exchanger by described 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, is characterized in that,
Also comprise: the second electric expansion valve;
Described the second air cooling heat exchanger is connected with the input of described water cooling heat exchanger by described 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 comprise gas-liquid separator;
The entrance point of described gas-liquid separator is connected with output, the 3rd end of the first cross valve and the second end of the 4th end and the second cross valve and the 4th end of described the second magnetic valve, and the outlet of described gas-liquid separator is connected with the air return end of described compressor bank.
5. Air-Cooled Heat Pump Unit according to claim 4, is characterized in that,
On the link circuit of the air return end of described gas-liquid separator outlet and described compressor bank, be provided with low pressure switch and low-pressure sensor;
Described low-pressure sensor detects pressure size between described gas-liquid separator outlet and described compressor bank air return end;
Described low tension switch, for according to the pressure size detecting, is controlled pipeline between the described gas-liquid separator port of export and described compressor bank air return end and is opened and turn-off.
6. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that,
Described compressor bank output is provided with high-pressure switch and high-pressure sensor;
Described high-pressure sensor is for detection of the pressure size of described compressor bank output;
Described high-pressure switch, for according to the pressure size detecting, is controlled described compressor bank opening and closing.
7. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the model of described the first air cooling heat exchanger and described the second air cooling heat exchanger is identical or different.
8. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the model of described the first outdoor fan and described the second outdoor fan is identical or different.
9. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the model of described the first magnetic valve and described the second magnetic valve is identical or different.
10. Air-Cooled Heat Pump Unit according to claim 1, is characterized in that, the model of described the first cross valve and described the second cross valve is identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440798.1A CN104154620A (en) | 2014-09-01 | 2014-09-01 | Air cooled heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440798.1A CN104154620A (en) | 2014-09-01 | 2014-09-01 | Air cooled heat pump unit |
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| CN104154620A true CN104154620A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410440798.1A Pending CN104154620A (en) | 2014-09-01 | 2014-09-01 | Air cooled heat pump unit |
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| Country | Link |
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| CN (1) | CN104154620A (en) |
Citations (6)
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|---|---|---|---|---|
| JPS5892737A (en) * | 1981-11-27 | 1983-06-02 | Hitachi Ltd | Air conditioner with hot water supply and floor heating performance |
| US4454728A (en) * | 1982-02-03 | 1984-06-19 | Hitachi, Ltd. | Air conditioning system |
| US5522222A (en) * | 1993-06-10 | 1996-06-04 | Samsung Electronics Co., Ltd. | Cooling and heating system utilizing a vuilleumier pump |
| CN201652663U (en) * | 2010-04-29 | 2010-11-24 | 四川长虹空调有限公司 | Heat recovery heat pump air conditioning system |
| KR101050253B1 (en) * | 2010-11-23 | 2011-07-19 | (주)세원센추리 | Heat pump type thermo-hygrostat for cold districts |
| CN103983044A (en) * | 2014-05-28 | 2014-08-13 | 广东志高暖通设备股份有限公司 | Air cooled heat pump unit |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5892737A (en) * | 1981-11-27 | 1983-06-02 | Hitachi Ltd | Air conditioner with hot water supply and floor heating performance |
| US4454728A (en) * | 1982-02-03 | 1984-06-19 | Hitachi, Ltd. | Air conditioning system |
| US5522222A (en) * | 1993-06-10 | 1996-06-04 | Samsung Electronics Co., Ltd. | Cooling and heating system utilizing a vuilleumier pump |
| CN201652663U (en) * | 2010-04-29 | 2010-11-24 | 四川长虹空调有限公司 | Heat recovery heat pump air conditioning system |
| KR101050253B1 (en) * | 2010-11-23 | 2011-07-19 | (주)세원센추리 | Heat pump type thermo-hygrostat for cold districts |
| CN103983044A (en) * | 2014-05-28 | 2014-08-13 | 广东志高暖通设备股份有限公司 | Air cooled heat pump unit |
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Application publication date: 20141119 |