CN105318599A - Cold and hot multifunctional heat pump equipment - Google Patents
Cold and hot multifunctional heat pump equipment Download PDFInfo
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- CN105318599A CN105318599A CN201410421115.8A CN201410421115A CN105318599A CN 105318599 A CN105318599 A CN 105318599A CN 201410421115 A CN201410421115 A CN 201410421115A CN 105318599 A CN105318599 A CN 105318599A
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- 239000003507 refrigerant Substances 0.000 claims abstract description 183
- 238000010257 thawing Methods 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 213
- 239000002826 coolant Substances 0.000 claims description 168
- 239000000498 cooling water Substances 0.000 claims description 36
- 238000005057 refrigeration Methods 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000009746 freeze damage Effects 0.000 claims 2
- 238000001816 cooling Methods 0.000 abstract description 18
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000007599 discharging Methods 0.000 abstract 2
- 238000007710 freezing Methods 0.000 description 19
- 230000008014 freezing Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000007787 solid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
A multifunctional heat pump equipment for cooling and heating is composed of compressor, heat exchanger, heat-discharging heat exchanger, cooling/heat-discharging heat exchanger, refrigerating heat exchanger, flow combiner (collector), and refrigerant circulating pipeline. The compressor, the heating exchanger, the heat discharge heat exchanger, the cold/heat discharge heat exchanger, the cooling exchanger, and the flow combiner are connected by a refrigerant circulation line to form a refrigerant circulation system. The refrigerant circulating system provides a hot flow refrigerant supplying loop, a cold flow refrigerant supplying loop and a defrosting refrigerant loop, wherein the defrosting refrigerant loop utilizes the heat exchanger as a defrosting heat source, and before the refrigerant finally returns to the compressor, the refrigerant can selectively flow through the heat exchanger through a branch loop to improve the superheat degree so as to prevent the liquid from being compressed.
Description
Technical field
The present invention relates to a kind of heat-pump apparatus, and in particular to the cold and hot multifunctional heat pump equipment of one.
Background technology
Heat pump heating equipment is a kind of high efficiency and safe thermal-arrest the energy saver of heat transfer, the electric power consumed can be become 2-3 heat energy doubly.Heat pump heating equipment comprises several forms, such as gas source type heat pump, water source type heat pump, source formula heat pump and combined heat pump, can be applicable to household cold-warm air conditioner, business central type heat pump air conditioner main frame and heat pump water chiller-heater main frame.
Gas source type heat pump, using air as thermal source, by compressor power input by the low temperature heat energy in air, is converted into high temperature heat, heats, such as, by water or air heat, to provide hot water or heating installation.Gas source type heat pump also can by water or air cooling-down, to provide frozen water or cold air, to carry out refrigeration purposes.This type heat pump heats circulation time in the winter time, can decline along with ambient temperature and heat absorption capacity be reduced, under lower ambient temperature (less than about 5 degrees Celsius) condition during long time running, outdoor pipe row has frosting and produces, heat exchange effect is deteriorated, thus constantly defrost, so not only the heat time increases, also startup and the stopping of high frequent is caused, this is refrigerant (refrigerant, cold-producing medium, refrigerant, be hereafter referred to as refrigerant) system time must consider running time institute's problems faced.
The Defrost mode of usual employing has: shut down defrosting, hot gas bypass defrosting, reverse cycle defrosting and electric defrosting.Above Defrost method has defrosting heat source temperature low or cause defrosting time long with defrosting not exclusively or must arrange liquid-gas separator to prevent the liquid refrigerants defrosted when operating is back to compressor (preventing " hydraulic compression, liquidcompression ") or additionally must arrange electric heater increases the problems such as power consumption without thermal source.
Existing gas source type heat-pump hot-water main frame and heating-cooling double-effect main frame, the mode of frequent employing hot-gas bypass defrosts, liquid refrigerants can be condensed into, therefore at the saturated cold media gas that evaporator outlet can be containing liquid refrigerants after the hot gas of bypass enters the evaporimeter of low temperature.Compressor is back in order to prevent liquid refrigerants, between evaporator outlet and compressor suction, must liquid-gas separator be set, after making refrigerant carry out the separation of liquid gas in liquid-gas separator, liquid refrigerants is deposited in bottom liquid-gas separator, and the gaseous coolant after separation enters compressor again.
Adopting liquid-gas separator when defrosting, often can run into a following difficult problem:
Be deposited in the liquid refrigerants bottom liquid-gas separator, do not have enough thermals source can make it evaporation, the thermal source of outside air only can be leaned on to make refrigerant slowly be evaporated to gas, if the liquid refrigerants retained is too much and the duration of runs is long, the frosting of liquid-gas separator outer surface will be made, result makes heat exchange effect be deteriorated, the more difficult evaporation of refrigerant of liquid-gas separator; Because liquid-gas separator does not have enough thermals source to make refrigerant evaporation, defrosting is determined according to the size of liquid-gas separator the duration of runs.When liquid-gas separator is too small, the time of defrosting running is short, and defrosting may be incomplete, and liquid reflux is high to the risk of compressor.Therefore certainly will need the size strengthening liquid-gas separator, exchange with space the duration of runs of defrosting for, enable the defrosting of evaporimeter complete.But relative, the liquid refrigerants retained in liquid-gas separator will increase, so long by meeting with the above-mentioned duration of runs, make the problem of liquid-gas separator outer surface frosting.Therefore the size of liquid-gas separator is difficult to determine, usually only can adopt safer design, arrange larger liquid-gas separator as far as possible, so too increase volume and the cost of main frame; Be deposited in the liquid refrigerants bottom liquid-gas separator, must consider in refrigerant evaporation process, the refrigeration oil that cannot evaporate can be made to remain in bottom, therefore oil return apparatus must be set and make refrigeration oil get back to compressor, avoid compressor to lose oil.
These two prior aries are when cooling operation in addition, are respectively only suitable for the single mode of air cooling or water-cooled, to carry out hot driving to the refrigerant of HTHP.When just only using water-cooling pattern refrigeration to provide air-conditioning and cooling requirement, effectively can reduce the pressure that spues of compressor, also be the condensing pressure reduction of system, cooling system efficiency (being also coefficient of performance) so can be made to improve, reach the effect of saving the energy.Although system running efficiency can be improved with water-cooling pattern, but when cooler-water temperature is too low, because condensing pressure is too low will produce adverse influence to system running, one is because condensing pressure is too low, pressure reduction before and after expansion valve is not enough, therefore makes the cold medium flux through expansion valve not enough, causes evaporating pressure too low, system is chaser protection because evaporating pressure is too low, cannot run well; In addition compressor because of condensing pressure too low, make oil pressure too low, therefore bearing of compressor cannot obtain normal lubrication and cooling, exceeds the operating range that compressor is allowed, must stoppage protection.To cause except coolant water temperature is too low except system cannot run well, when the cycle interruption (when lack of water or cooling water circulation failure of pump) of cooling water, system cannot be dispelled the heat normally, and refrigeration also will stop.Relative, when only using air cooling, although COP is lower than water-cooling pattern, there is no the shortcoming of water-cooling pattern.
Summary of the invention
The invention provides a kind of cold and hot multifunctional heat pump equipment, it is used as defrosting thermal source by heat exchanger and prevents hydraulic compression (liquidcompression), improve heat-obtaining source during defrosting running, and before noting be used in compressor suction, liquid-gas separator is set, therefore contribute to the size of reducing integral device.
The present invention proposes a kind of cold and hot multifunctional heat pump equipment, and it comprises coolant circulating system.Coolant circulating system comprises refrigerant circulation pipeline, compressor, heat exchanger, hot driving heat exchanger, cold/hot driving heat exchanger, refrigeration interchanger and junction station.Refrigerant circulation pipeline has logical reversal valve more than first.Compressor has discharge opening and suction inlet, and discharge opening connects the first end port of more than first logical reversal valves.Heat exchanger comprises the first coolant path, the second coolant path and hot water passageway, and wherein more than first, the second end port of logical reversal valve connects one end of the first coolant path and one end of the second coolant path respectively.Hot driving heat exchanger comprises the 3rd coolant path and cooling water path, and wherein the other end of the first coolant path connects one end of the 3rd coolant path, and the other end of the second coolant path connects the other end of the 3rd coolant path.Cold/hot driving heat exchanger comprises the 4th coolant path and fan, and wherein the 4th coolant path connects the other end of the 3rd coolant path and the 4th end port of more than first logical reversal valves respectively.Refrigeration interchanger comprises the 5th coolant path and frozen water path, and wherein one end of the 5th coolant path connects the other end of the 3rd coolant path.Junction station connects logical 3rd end port of reversal valve, the other end of the 5th coolant path and suction inlet more than first respectively.
The present invention proposes a kind of cold and hot multifunctional heat pump equipment in addition, and it comprises coolant circulating system.Coolant circulating system comprises refrigerant circulation pipeline, compressor, heat exchanger, hot driving interchanger, cold/hot driving heat exchanger, refrigeration interchanger and junction station.Refrigerant circulation pipeline has logical reversal valve more than first and more than second logical reversal valves.Compressor has discharge opening and suction inlet, and wherein discharge opening connects the first end port of more than first logical reversal valves, and suction inlet connects the first end port of more than second logical reversal valves.Heat exchanger comprises the first coolant path, the second coolant path and hot water passageway.More than first, the second end port of logical reversal valve connects one end of the first coolant path, and the second end port of logical reversal valve more than second connects one end of the second coolant path, and more than second, the 3rd end port of logical reversal valve connects the other end of the second coolant path.Hot driving heat exchanger comprises the 3rd coolant path and cooling water path, wherein the other end of the first coolant path connects one end of the 3rd coolant path, and the other end of the 3rd coolant path connects the other end of the second coolant path, one end of the 4th coolant path and one end of the 5th coolant path respectively.Cold/hot driving heat exchanger comprises the 4th coolant path and fan, and wherein the 4th coolant path connects the other end of the 3rd coolant path and the 4th end port of more than first logical reversal valves respectively.Refrigeration interchanger comprises the 5th coolant path and frozen water path, and wherein one end of the 5th coolant path connects the other end of the 3rd coolant path.The 4th end port that junction station connects logical 3rd end port of reversal valve more than first respectively, the other end of the 5th coolant path and more than second leads to reversal valves.
In sum, cold and hot multifunctional heat pump equipment of the present invention, existing gas source type heat-pump hot-water main frame and hot and cold water economic benefits and social benefits main frame can be solved in heat-obtaining mode when operating that defrosts, and in order to prevent compressor liquid refrigerants from refluxing, the problem of large-scale liquid-gas separator must be set before compressor suction, for hot water heat exchanger as heat exchanger, effect achieved by the present invention is: the part or all of hot water utilizing hot water heat exchanger, as thermal source during system defrosting running, when making evaporimeter carry out defrosting running, defrosting speed is fast and defrosting effect is complete, utilize the part hot water of hot water heat exchanger, thermal source time not enough as the refrigerant degree of superheat being back to compressor, to prevent hydraulic compression to protect compressor, and liquid-gas separator need not be set just can prevent and get rid of compressor generation hydraulic compression, reach the reduction installation space of main frame and effect of size.
For above-mentioned feature of the present invention can be become apparent, special embodiment below, and coordinate appended diagram to be described below in detail.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the hot and cold water economic benefits and social benefits main frame of first embodiment of the invention;
Fig. 2 is the rough schematic view of the system flow of a hot and cold water economic benefits and social benefits main frame hot-water supply of Fig. 1;
Fig. 3 is the system flow that cold water only supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 1, and supplies the rough schematic view of system flow of hot and cold water simultaneously.
Fig. 4 is the rough schematic view that the another kind of system flow of cold water only supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 1;
Fig. 5 is the rough schematic view of the system flow of the hot and cold water economic benefits and social benefits main frame defrosting running of Fig. 1;
Fig. 6 is the schematic diagram of the hot and cold water economic benefits and social benefits main frame of the second embodiment;
Fig. 7 is the rough schematic view of the system flow of a hot and cold water economic benefits and social benefits main frame hot-water supply of Fig. 6;
Fig. 8 is the system flow that cold water only supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 6, and supplies the rough schematic view of system flow of hot and cold water simultaneously;
Fig. 9 is the rough schematic view that the another kind of system flow of cold water only supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 6;
Figure 10 is the rough schematic view of the system flow of the hot and cold water economic benefits and social benefits main frame defrosting running of Fig. 6.
Wherein Reference numeral is:
6: the first cross valves;
6a: first end port;
6b: the second end port;
6c: the three end port;
6d: the four end port;
7: the first expansion valves;
8: the second expansion valves;
9: the three expansion valves;
10: the first magnetic valves;
11: the second magnetic valves;
12: the three magnetic valves;
13: the four magnetic valves;
14: the five magnetic valves;
15: the six magnetic valves;
16: the first check valves;
17: the second check valves;
18: the three check valves;
19: the second cross valves;
19a: first end port;
19b: the second end port:
19c: the three end port;
19d: the four end port;
100,100A: hot and cold water economic benefits and social benefits main frame;
110: compressor;
110a: discharge opening;
110b: suction inlet;
120: hot water heat exchanger;
121: the first coolant paths;
122: the second coolant paths;
123: hot water passageway;
130: water cooled condenser;
131: the three coolant paths;
132: cooling water path;
140: air side heat exchanger;
141: the four coolant paths;
142: fan;
150: freezing water apparatus;
151: the five coolant paths;
152: frozen water path;
160: junction station;
A ~ O: pipe fitting.
Detailed description of the invention
Fig. 1 is the schematic diagram of the hot and cold water economic benefits and social benefits main frame of first embodiment of the invention.Please refer to Fig. 1, in the present embodiment, cold and hot multifunctional heat pump equipment is such as hot and cold water economic benefits and social benefits main frame 100, and it formed primarily of refrigerant circulation pipeline, compressor 110, hot water heat exchanger 120, water cooled condenser 130, air side heat exchanger 140, freezing water apparatus 150 and junction station 160 (collector).Hot water heat exchanger 120 is heat exchanger, and it comprises the first coolant path 121, second coolant path 122 and hot water passageway 123.First coolant path 121 of hot water heat exchanger 120 is for making the system flow of hot water, and the system flow of the second coolant path 122 for defrosting.Water cooled condenser 130 is as the hot driving heat exchanger of condenser, and it comprises the 3rd coolant path 131 and cooling water path 132, makes refrigerant from the 3rd coolant path 131 heat extraction to cooling water path 132 with water-cooling pattern.
Air side heat exchanger 140 can be used as evaporimeter or condenser cold/hot driving heat exchanger, it comprises the 4th coolant path 141 and fan 142.When air side heat exchanger 140 is as evaporimeter, the refrigerant flowing through air side heat exchanger absorbs heat to air, and when air side heat exchanger 140 is as condenser, is carry out heat release by refrigerant to air.Freezing water apparatus 150 is refrigeration interchanger, and it comprises the 5th coolant path 151 and frozen water path 152.Wherein, refrigerant circulation pipeline comprises logical reversal valve and pipe fitting A ~ N more than first, pipe fitting A ~ N, in order to connect the logical reversal valve of compressor more than 110, first, hot water heat exchanger 120, water cooled condenser 130, air side heat exchanger 140, freezing water apparatus 150 and junction station 160 respectively, circulates in these elements to make refrigerant.
In hot water heat exchanger 120, the refrigerant flowing through the first coolant path 121 is transformed into liquid state by gaseous state, thus provides heat to hot water passageway 123, to make hot water, and the refrigerant flowing through the second coolant path 122 can absorb heat energy from hot water passageway 123, become the high temperature refrigerant of gaseous state.In freezing water apparatus 150, the refrigerant flowing through the 5th coolant path 151 absorbs heat energy from frozen water path 152, becomes gaseous state from liquid state, to make frozen water.Notice hot water passageway 123, frozen water path 152 also can be used as the fluid heating of other types or heat flow path, the cold flow path of cooling, become to make equipment and heating installation or hot water, various combinations with cold air or frozen water are provided, such as hot water and cold air, heating installation and frozen water etc., with applicable varying environment and user demand.
Hot water heat exchanger 120 is heat-exchangers of the plate type, and it also can be other forms of heat exchanger.Each heat exchanger above-mentioned can select different forms according to the kind of working fluid, and such as refrigerant is to the finned coil formula heat exchanger (fin tube type heat exchanger) of air, or refrigerant is to the shell and tube heat exchanger of water.Based on air side heat exchanger 140 for having the finned coil formula heat exchanger of fan speed-regulating, therefore fan 142 can be coordinated to assist to flow through the refrigerant of the 4th coolant path 141 and air carries out heat exchange.
In the connection embodiment of refrigerant circulation pipeline, hot and cold water economic benefits and social benefits main frame 100 comprises multiple control valve, and this multiple control valve can comprise the first cross valve 6 (being also more than first logical reversal valves), the first expansion valve 7, second expansion valve 8, the 3rd expansion valve 9, first magnetic valve 10, second magnetic valve 11, the 3rd magnetic valve 12, the 4th magnetic valve 13, the 5th magnetic valve 14, the 6th magnetic valve 15, first check valve 16 and the second check valve 17.These control valves are installed on pipe fitting A ~ N in the manner shown in figure 1 respectively.Acting as of these control valves flowing to for switching refrigerant as required, blocking refrigerant or regulating cold medium flux and pressure.
In the connection embodiment of this refrigerant circulation pipeline, by being connected with these elements by pipe fitting A ~ N, coolant circulating system can be formed.Further, pipe fitting A connects the discharge opening 110a of the compressor 110 and first end port 6a of the first cross valve 6.Pipe fitting B connects the second end port 6b and the pipe fitting C pipe fitting D of the first cross valve 6.First coolant path 121 of pipe fitting C connecting tube B and hot water heat exchanger 120.Second coolant path 122 of pipe fitting D connecting tube B and hot water heat exchanger 120.Pipe fitting E connects first coolant path 121 of hot water heat exchanger 120 and the 3rd coolant path 131 of water cooled condenser 130.Pipe fitting F connects the 3rd coolant path 131 and pipe fitting G, pipe fitting H, pipe fitting I and the pipe fitting J of water cooled condenser 130, and pipe fitting G connects the second coolant path 122 and the pipe fitting F of hot water exchanger 120.Pipe fitting H connects one end and the pipe fitting F of the 4th coolant path 141 of air side heat exchanger 140.Pipe fitting I connecting tube F and pipe fitting H.Pipe fitting J connects one end and the pipe fitting F of the 5th coolant path 151 of freezing water apparatus 150.Pipe fitting K connects the other end and the junction station 160 of the 5th coolant path 151 of freezing water apparatus 150.Pipe fitting L connects the other end of the 4th coolant path 141 and the 4th end port 6d of the first cross valve 6 of air side heat exchanger 140.Pipe fitting M connects the 3rd end port 6c of junction station 160 and the first cross valve 6.Pipe fitting N connects the suction inlet 110b of junction station 160 and compressor 110.
Thus, the coolant circulating system formed provides supply hot-fluid refrigerant loop, supply cold flow refrigerant loop, supplies hot and cold stream refrigerant loop and defrosting refrigerant loop simultaneously.In coolant circulating system, the path of end port, first cross valve 6 changeable one-tenth first end port to the second (6a-6b) with the 3rd end port to the 4th end port (6c-6d) or the path at first end port to the 4th end port (6a-6d) and the second end port to the 3rd end port (6b-6c), and make refrigerant can selectively flow in above-mentioned each refrigerant loop, and the 3rd magnetic valve 12 can when freezing water apparatus 150 shuts down (frozen water does not have circulation time), refrigerant in resistance Broken freezing water apparatus 150, refrigerant pressure is avoided to reduce, temperature is unlikely to be reduced to less than 0 degree Celsius, prevent frozen water from freezing to cause the pipe breakage of freezing water apparatus 150.Running flow process about these refrigerant loops will be described after a while with further reference to accompanying drawing.Switched and On/Off by the flow direction of control valve, refrigerant can selectively flow in these loops, for providing hot water and/or cold water, and in supply cold flow refrigerant loop, because of operational requirements, selectively can adopt water-cooled or air cooling pattern.
Further illustrate for the running operation pattern of hot and cold water economic benefits and social benefits main frame 100 and system flow below.Hot and cold water economic benefits and social benefits main frame 100 according to the system flow of the system flow of only hot-water supply, only supply cold water, supply cold water and the system flow of hot water and the system flow of defrosting simultaneously, can carry out the switching of running operation pattern, is respectively described below.
Fig. 2 is the rough schematic view of the system flow of a hot and cold water economic benefits and social benefits main frame hot-water supply of Fig. 1.Please refer to Fig. 2, at this, cooling water in the cooling water path 132 of water cooled condenser 130 stops flowing, and air side heat exchanger 140 uses as evaporimeter, supply hot-fluid refrigerant loop is the 4th coolant path 141-first cross valve 6 (6d-6c)-junction station 160-compressor 110 (as shown in solid arrow) of the 3rd coolant path 131-first check valve 16-the 5th magnetic valve 14-second expansion valve 8-air side heat exchanger 140 of the first coolant path 121-water cooled condenser 130 of compressor 110-first cross valve 6 (6a-6b)-the first magnetic valve 10-hot water heat exchanger 120.In brief, in the process of heating-cooling double-effect main frame 100 hot-water supplies, refrigerant still can by the 3rd coolant path 131 of water cooled condenser 130, but because the cooling water in the cooling water path 132 of water cooled condenser 130 stops flowing, therefore by the refrigerant of the 3rd coolant path 131 can't heat extraction to cooling water path 132.So, other pipe fittings or control valve just additionally need not be set to the 3rd coolant path 131 of the first coolant path 121 with water cooled condenser 130 of shunting hot water heat exchanger 120, contribute to simplifying the loop design of integral device and reduce manufacturing cost.
Only supplying in the system flow of cold water, by the circuit controls by each control valve to form two kinds of supply cold flow refrigerant loops, make refrigerant can select flowing one of wherein, also the refrigerant of HTHP can be made to carry out hot driving with water cooled condenser 130 or air side heat exchanger 140, the environmentally demand and determine best occupation mode of the switching between these two kinds of patterns.
The hot and cold water economic benefits and social benefits main frame that Fig. 3 is Fig. 1 only provides cold water, or supplies the rough schematic view of system flow of hot and cold water simultaneously.Please refer to Fig. 3, when only supplying the running of cold water, water cooled condenser 130 uses as condenser, carrys out condensation refrigerant to distribute heat energy to cooling water, and the hot water passageway 123 of hot water heat exchanger 120 stops circulation.Water-cooled supply cold flow refrigerant loop (being also the first supply cold flow refrigerant loop) is the 5th coolant path 151-the 3rd magnetic valve 12-junction station 160-compressor 110 (as shown in solid arrow) of the 3rd coolant path 131-first check valve 16-the 6th magnetic valve 15-the 3rd expansion valve 9-freezing water apparatus 150 of the first coolant path 121-water cooled condenser 130 of compressor 110-first cross valve 6 (6a-6b)-the first magnetic valve 10-hot water heat exchanger 120.In brief, in the process of 100, hot and cold water economic benefits and social benefits main frame supply cold water (and being the first supply cold flow refrigerant loop), refrigerant still can by first coolant path 121 of hot water heat exchanger 120, because the hot water in the hot water passageway 123 of hot water heat exchanger 120 stops flowing, therefore refrigerant just heat extraction can be transformed into liquid state to cooling water path 132 from gaseous state when flowing through the 3rd coolant path 131.So, other pipe fittings or control valve just additionally need not be set to the 3rd coolant path 131 of the first coolant path 121 with water cooled condenser 130 of shunting hot water heat exchanger 120, contribute to simplifying the loop design of integral device and reduce manufacturing cost.
Fig. 4 is the rough schematic view that the another kind of system flow of cold water only supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 1.Please refer to Fig. 4, at this, air side heat exchanger 140 uses as condenser, and ventilation type supply cold flow refrigerant loop (being also the second supply cold flow refrigerant loop) is the 5th coolant path 151-the 3rd magnetic valve 12-junction station 160-compressor 110 (as shown in solid arrow) of the 4th coolant path 141-second check valve 17-the 6th magnetic valve 15-the 3rd expansion valve 9-freezing water apparatus 150 of compressor 110-first cross valve 6 (6a-6d)-air side heat exchanger 140.
The another kind running flow process of Fig. 3 is the system flow rough schematic view that hot and cold water supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 1 simultaneously.Please refer to Fig. 3, when hot water load and frozen water load exist simultaneously, coolant circulating system provides supplies hot and cold stream refrigerant loop simultaneously, and the cooling water in the cooling water path 131 of water cooled condenser 130 can be selected forced flow or stop flowing.When cooling water forced flow in cooling water path 131, system operates as the function of part recuperation of heat, and when the cooling water in cooling water path 131 stops flowing, system operates as the function of full dose recuperation of heat.Whether flow of cooling water no matter in cooling water path 131, to supply hot and cold stream refrigerant loop for the 5th coolant path 151-the 3rd magnetic valve 12-junction station 160-compressor 110 (as shown in solid arrow) of the 3rd coolant path 131-first check valve 16-the 6th magnetic valve 15-the 3rd expansion valve 9-freezing water apparatus 150 of the first coolant path 121-water cooled condenser 130 of compressor 110-first cross valve 6 (6a-6b)-the first magnetic valve 10-hot water heat exchanger 120 simultaneously.
Supply at the same time in the operation mode of hot and cold water, when frozen water temperature arrives requirement, and when still having hot water loading demand, system can switch to as above-mentioned Fig. 2 illustrates and illustrated supply hot water system flow process or shutdown.When hot water temperature arrives requirement; and when still having frozen water loading demand; system can switch to only supplies chilled water system flow process or shutdown; wherein only a supply chilled water system flow process can be water-cooled supply cold flow refrigerant loop or ventilation type supply cold flow refrigerant loop, namely as described above and Fig. 3,4 only supply cold water running flow process shown in.
Fig. 5 is the rough schematic view of the system flow of the hot and cold water economic benefits and social benefits main frame defrosting running of Fig. 1.Please refer to Fig. 5, use the hot water passageway 123 of hot water heat exchanger 120 to the refrigerant heating flowing through the second coolant path 122, to defrost to the heat-exchange fin of air side heat exchanger 140 and pipe row, defrosting refrigerant loop is second coolant path 122-second magnetic valve 11-first cross valve 6 (6b-6c)-junction station 160-compressor 110 (as shown in solid arrow) of the 4th coolant path 141-second check valve 17-the 4th magnetic valve 13-first expansion valve 7-hot water heat exchanger 120 of compressor 110-first cross valve 6 (6a-6d)-air side heat exchanger 140.
Below the hot and cold water economic benefits and social benefits main frame for the second embodiment is described, and is described in detail mainly for the second embodiment and the first embodiment difference.Specifically, the annexation between the element that the hot and cold water economic benefits and social benefits main frame 100A of the second embodiment uses and these elements is substantially similar with the first embodiment, therefore each element uses identical title and numbering, to facilitate clearer and brief description.
Fig. 6 is the schematic diagram of the hot and cold water economic benefits and social benefits main frame of the second embodiment.Please refer to Fig. 6, in the present embodiment, main difference part between the hot and cold water economic benefits and social benefits main frame 100 of hot and cold water economic benefits and social benefits main frame 100A and the first embodiment is, before refrigerant flows back to compressor 110, one duplexure is provided, by the switching of the second cross valve 19 (being also more than second logical reversal valves), make refrigerant can select directly to flow back to compressor 110 or flow back to compressor 110 again through second coolant path 122 of hot water heat exchanger 120.Concretely, the second cross valve 19 can switch to the path of end port, first end port to the second (19a-19b) with the 3rd end port to the 4th end port (19c-19d) or the path at first end port to the 4th end port (19a-19d) and the second end port to the 3rd end port (19b-19c).
In the connection embodiment of refrigerant circulation pipeline, multiple control valve can comprise the first cross valve 6 (being also more than first logical reversal valves), the first expansion valve 7, second expansion valve 8, the 3rd expansion valve 9, first magnetic valve 10, second magnetic valve 11, the 3rd magnetic valve 12, the 4th magnetic valve 13, the 5th magnetic valve 14, first check valve 16, second check valve 17, the 3rd check valve 18 and the second cross valve 19 (being also more than second logical reversal valves).These control valves are installed on pipe fitting A ~ O respectively in mode as shown in Figure 6.
In the connection embodiment of this refrigerant circulation pipeline, by being connected with other each elements by pipe fitting A ~ O, the coolant circulating system of the second embodiment can be formed.Further, pipe fitting A connects the discharge opening 110a of the compressor 110 and first end port 6a of the first cross valve 6.Pipe fitting B connects the second end port 6b of the first cross valve 6 and first coolant path 121 of hot water heat exchanger 120.Pipe fitting C connects first coolant path 121 of hot water heat exchanger 120 and the 3rd coolant path 131 of water cooled condenser 130.Pipe fitting D connects the 3rd coolant path 131 and pipe fitting E, pipe fitting F, pipe fitting G and the pipe fitting H of water cooled condenser 130.Pipe fitting E connects the other end and the pipe fitting D and pipe fitting N of second coolant path 122 of hot water heat exchanger 120.Pipe fitting F connects one end and the pipe fitting D of the 4th coolant path 141 of air side heat exchanger 140.Pipe fitting G connecting tube D and pipe fitting F.Pipe fitting H connects one end and the pipe fitting D of the 5th coolant path 151 of freezing water apparatus 150.Pipe fitting I connects the other end of the 4th coolant path 141 and the 4th end port 6d of the first cross valve 6 of air side heat exchanger 140.Pipe fitting J connects the other end and the junction station 160 of the 5th coolant path 151 of freezing water apparatus 150.Pipe fitting K connects the 3rd end port 6c and the junction station 160 of the first cross valve 6.Pipe fitting L connects the 4th end port 19d of junction station 160 and the second cross valve 19.Pipe fitting M connects one end of the second coolant path 122 and the second end port 19b of the second cross valve 19 of hot water heat exchanger 120.3rd end port 19c of pipe fitting N connecting tube E and the second cross valve 19.Pipe fitting O connects the first end port 19a of the second cross valve 19 and suction inlet 110b of compressor 110.
Therefore, the coolant circulating system formed provides supply hot-fluid refrigerant loop, water-cooled and ventilation type supply cold flow refrigerant loop, supplies hot and cold stream refrigerant loop and defrosting refrigerant loop simultaneously, by the configuration of above-mentioned control valve, refrigerant can be selected to flow in these loops, for providing hot water and/or cold water, and detect module by liquid refrigerants liquid refrigerants to be led duplexure, be heated into gaseous coolant, and avoid the generation of hydraulic compression.Wherein, each refrigerant loop of the second embodiment without the system flow of hydraulic compression situation and the first embodiment similar, be not repeated, below only for preventing the flow process of hydraulic compression to be described.
In hot and cold water economic benefits and social benefits main frame 100A, leave junction station 160 and before entering the second cross valve 19 at refrigerant, pipe fitting L is provided with liquid refrigerants and detects module, and in the present embodiment, aforementioned liquid refrigerant detects module and comprises pressure detector P and temperature inductor T.Pressure detector P can be used to the force value detecting the refrigerant flowing out junction station 160, and temperature inductor T then can be used to the temperature value detecting refrigerant.According to the saturation temperature value of the force value calculating refrigerant that pressure detector P detects, compare with the temperature value detected by temperature inductor T, to calculate the degree of superheat of refrigerant, whether the refrigerant judging to be about to be back to compressor 110 has the situation of degree of superheat deficiency.When the degree of superheat is lower than (being also that the degree of superheat is not enough) during setting value, representative has the existence of liquid refrigerants, now has the situation generation that liquid refrigerants is back to compressor (hereinafter referred to as hydraulic compression).For avoiding hydraulic compression, refrigerant must be imported duplexure, also be via the second cross valve 19 and pipe fitting N, to flow through second coolant path 122 of hot water heat exchanger 120, come to carry out heat exchange with hot water passageway 123, improve its degree of superheat, and make refrigerant be back to compressor 110 with gaseous state, avoid damaging compressor.The suitable method that liquid refrigerants detection module also can record liquid refrigerants existence by other realizes.
Fig. 7 is the rough schematic view of the system flow of a hot and cold water economic benefits and social benefits main frame hot-water supply of Fig. 6.Please refer to Fig. 7, at this, cooling water in the cooling water path 132 of water cooled condenser 130 stops flowing, and air side heat exchanger 140 uses as evaporimeter, supply hot-fluid refrigerant loop is second coolant path 122-second cross valve 19 (19b-19a)-compressor 110 (as shown in solid arrow) of the 4th coolant path 141-first cross valve 6 (6d-6c)-junction station 160-second cross valve 19 (19d-19c)-three check valve 18-hot water heat exchanger 120 of the 3rd coolant path 131-first check valve 16-the 4th magnetic valve 13-second expansion valve 8-air side heat exchanger 140 of the first coolant path 121-water cooled condenser 130 of compressor 110-first cross valve 6 (6a-6b)-the first magnetic valve 10-hot water heat exchanger 120.
Fig. 8 is that the hot and cold water economic benefits and social benefits main frame of Fig. 6 only supplies cold water, or supplies the rough schematic view of system flow of hot and cold water simultaneously.Please refer to Fig. 8, when only supplying the running of cold water, the flow of cooling water in the cooling water path 132 of water cooled condenser 130.Water-cooled supply cold flow refrigerant loop (being also the first supply cold flow refrigerant loop) is second coolant path 122-second cross valve 19 (19b-19a)-compressor 110 (as shown in solid arrow) of the 5th coolant path 151-junction station 160-second cross valve 19 (19d-19c)-three check valve 18-hot water heat exchanger 120 of the 3rd coolant path 131-first check valve 16-the 5th magnetic valve 14-the 3rd expansion valve 9-freezing water apparatus 150 of the first coolant path 121-water cooled condenser 130 of compressor 110-first cross valve 6 (6a-6b)-the first magnetic valve 10-hot water heat exchanger 120.
Fig. 9 is the rough schematic view that the another kind of system flow of cold water only supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 6.Please refer to Fig. 9, at this, air side heat exchanger 140 uses as condenser, ventilation type supply cold flow refrigerant loop (being also the second supply cold flow refrigerant loop) is second coolant path 122-second cross valve 19 (19b-19a)-compressor 110 (as shown in solid arrow) of the 5th coolant path 151-second magnetic valve 11-junction station 160-second cross valve 19 (19d-19c)-three check valve 18-hot water heat exchanger 120 of the 4th coolant path 141-second check valve 17-the 5th magnetic valve 14-the 3rd expansion valve 9-freezing water apparatus 150 of compressor 110-first cross valve 6 (6a-6d)-air side heat exchanger 140.
Another running flow process of Fig. 8 is the rough schematic view that the system flow of hot and cold water supplied by the hot and cold water economic benefits and social benefits main frame of Fig. 6 simultaneously.Please refer to Fig. 8, when hot water load and cold water load exist simultaneously, coolant circulating system provides supplies hot and cold stream refrigerant loop simultaneously, and the cooling water in the cooling water path 131 of water cooled condenser 130 can be selected forced flow or stop flowing.When cooling water forced flow in cooling water path 131, system operates as the function of part recuperation of heat, and when the cooling water in cooling water path 131 stops flowing, system operates as the function of full dose recuperation of heat.Whether flow of cooling water no matter in cooling water path 131, to supply hot and cold stream refrigerant loop for second coolant path 122-second cross valve 19 (19b-19a)-compressor 110 (as shown in solid arrow) of the 5th coolant path 151-junction station 160-second cross valve 19 (19d-19c)-three check valve 18-hot water heat exchanger 120 of the 3rd coolant path 131-first check valve 16-the 5th magnetic valve 14-the 3rd expansion valve 9-freezing water apparatus 150 of the first coolant path 121-water cooled condenser 130 of compressor 110-first cross valve 6 (6a-6b)-the first magnetic valve 10-hot water heat exchanger 120 simultaneously.
Figure 10 is the rough schematic view of the system flow of the hot and cold water economic benefits and social benefits main frame defrosting running of Fig. 6.Please refer to Figure 10, use the hot water passageway 123 of hot water heat exchanger 120 to the refrigerant heating flowing through the second coolant path 122, defrosting to the heat-exchange fin of air side heat exchanger 140 and pipe row, defrosting refrigerant loop is second coolant path 122-second cross valve 19 (19b-19a)-compressor 110 (as shown in solid arrow) of the 4th coolant path 141-second check valve 17-the 3rd magnetic valve 12-first expansion valve 7-hot water heat exchanger 120 of compressor 110-first cross valve 6 (6a-6d)-air side heat exchanger 140.
In sum, cold and hot multifunctional heat pump equipment of the present invention, existing gas source type heat-pump hot-water main frame and hot and cold water economic benefits and social benefits main frame can be solved in heat-obtaining mode when operating that defrosts, and in order to prevent compressor liquid refrigerants from refluxing, the problem of large-scale liquid-gas separator must be set before compressor suction, for hot water heat exchanger as heat exchanger, effect achieved by the present invention is: the part or all of hot water utilizing hot water heat exchanger, as thermal source during system defrosting running, when making evaporimeter carry out defrosting running, defrosting speed is fast and defrosting effect is complete, utilize the part hot water of hot water heat exchanger, thermal source time not enough as the refrigerant degree of superheat being back to compressor, to prevent hydraulic compression to protect compressor, and liquid-gas separator is not set just can prevents and get rid of compressor generation hydraulic compression, reach the effect of the installation space size of reduction main frame.
The present invention also can have other various embodiments; without departing from the spirit and scope of the present invention; any those skilled in the art, can do some and improve and change, therefore the scope that protection scope of the present invention ought define depending on claims is as the criterion on basis of the present invention.
Claims (13)
1. a cold and hot multifunctional heat pump equipment, is characterized in that, comprising:
Coolant circulating system, comprising:
Refrigerant circulation pipeline, has logical reversal valve more than first;
Compressor, has discharge opening and suction inlet, and this discharge opening connects the first end port of this more than first logical reversal valve;
Heat exchanger, comprises the first coolant path, the second coolant path and hot water passageway, and the second end port of this more than first logical reversal valve connects one end of this first coolant path and one end of this second coolant path respectively;
Hot driving heat exchanger, comprises the 3rd coolant path and cooling water path, and wherein the other end of this first coolant path connects one end of the 3rd coolant path, and the other end of this second coolant path connects the other end of the 3rd coolant path;
Cold/hot driving heat exchanger, comprises the 4th coolant path and fan, and the 4th coolant path connects the other end of the 3rd coolant path and one the 4th end port of this more than first logical reversal valve respectively;
Refrigeration interchanger, comprise the 5th coolant path and frozen water path, one end of the 5th coolant path connects the other end of the 3rd coolant path; And
Junction station, connects this more than first logical the 3rd end port of reversal valve, the other end of the 5th coolant path and this suction inlet respectively.
2. cold and hot multifunctional heat pump equipment as claimed in claim 1, is characterized in that, this refrigerant circulation pipeline also comprises:
Multiple pipe fitting, connect this compressor, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this cold/hot driving heat exchanger, this refrigeration interchanger and this junction station respectively, this coolant circulating system provides supply hot-fluid refrigerant loop, supply cold flow refrigerant loop, supplies hot and cold stream refrigerant loop and defrosting refrigerant loop simultaneously;
Wherein, refrigerant in this supply hot-fluid refrigerant loop flows through this compressor, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this cold/hot driving heat exchanger, this more than first logical reversal valve and this junction station in order, returns this compressor;
This supply cold flow refrigerant loop comprises the first supply cold flow refrigerant loop and the second supply cold flow refrigerant loop, for you to choose one of them use, refrigerant in this first supply cold flow refrigerant loop flows through this compressor in order, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this refrigeration interchanger and this junction station, return this compressor, and the refrigerant in this second supply cold flow refrigerant loop flows through this compressor in order, this more than first logical reversal valve, this cold/hot driving heat exchanger, this refrigeration interchanger and this junction station, return this compressor,
This refrigerant simultaneously supplied in hot and cold stream refrigerant loop flows through this compressor, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this refrigeration interchanger and this junction station in order, returns this compressor;
Refrigerant in this defrosting refrigerant loop flows through this compressor, this more than first logical reversal valve, this cold/hot driving heat exchanger, this heat exchanger, this more than first logical reversal valve and this junction station in order, returns this compressor.
3. cold and hot multifunctional heat pump equipment as claimed in claim 2, is characterized in that, also comprise:
At least one control valve, is arranged on these these pipe fittings arbitrary, and this control valve flowing to for switching refrigerant, blocking refrigerant and/or reconciling cold medium flux and pressure, selectively flows in this coolant circulating system to make refrigerant.
4. cold and hot multifunctional heat pump equipment as claimed in claim 3, is characterized in that, this control valve is magnetic valve or expansion valve.
5. cold and hot multifunctional heat pump equipment as claimed in claim 3, it is characterized in that, this control valve comprises and is arranged on the control valve that refrigerant leaves the other end of the 5th coolant path of this refrigeration interchanger, and it is for blocking refrigerant to avoid this refrigeration interchanger freeze damage.
6. cold and hot multifunctional heat pump equipment as claimed in claim 1, is characterized in that, this hot driving heat exchanger is water-cooled heat exchanger, and this cold/hot driving heat exchanger is air-cooled heat exchanger.
7. a cold and hot multifunctional heat pump equipment, is characterized in that, comprising:
Coolant circulating system, comprising:
Refrigerant circulation pipeline, has logical reversal valve more than first and more than second logical reversal valves;
Compressor, has discharge opening and suction inlet, and this discharge opening connects the first end port of this more than first logical reversal valve, and this suction inlet connects the first end port of this more than second logical reversal valve;
Heat exchanger, comprise the first coolant path, the second coolant path and hot water passageway, second end port of this more than first logical reversal valve connects one end of this first coolant path, and the second end port of this more than second logical reversal valve connects one end of this second coolant path, the 3rd end port of this more than second logical reversal valve connects the other end of this second coolant path;
Hot driving heat exchanger, comprises the 3rd coolant path and cooling water path, and wherein the other end of this first coolant path connects one end of the 3rd coolant path;
Cold/hot driving heat exchanger, comprises the 4th coolant path and fan, and the 4th coolant path connects the other end of the 3rd coolant path and one the 4th end port of this more than first logical reversal valve respectively;
Refrigeration interchanger, comprise the 5th coolant path and frozen water path, one end of the 5th coolant path connects the other end of the 3rd coolant path; And
Junction station, connects this more than first logical the 3rd end port of reversal valve, the other end of the 5th coolant path and this more than second the 4th end port leading to reversal valve respectively.
8. cold and hot multifunctional heat pump equipment as claimed in claim 7, is characterized in that, this refrigerant circulation pipeline also comprises:
Multiple pipe fitting, connect this compressor, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this cold/hot driving heat exchanger, this refrigeration interchanger, this more than second logical reversal valve and this junction station respectively, this coolant circulating system provides supply hot-fluid refrigerant loop, supply cold flow refrigerant loop, supplies hot and cold stream refrigerant loop, defrosting refrigerant loop and duplexure simultaneously;
Wherein, refrigerant in this supply hot-fluid refrigerant loop flows through this compressor, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this cold/hot driving heat exchanger, this more than first logical reversal valve, this junction station and this more than second logical reversal valve in order, returns this compressor;
This supply cold flow refrigerant loop comprises the first supply cold flow refrigerant loop and the second supply cold flow refrigerant loop, for you to choose one of them use, refrigerant in this first supply cold flow refrigerant loop flows through this compressor in order, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this refrigeration interchanger, this junction station and this more than second logical reversal valve, return this compressor, and the refrigerant in this second supply cold flow refrigerant loop flows through this compressor in order, this more than first logical reversal valve, this cold/hot driving heat exchanger, this refrigeration interchanger, this junction station and this more than second logical reversal valve, return this compressor,
This refrigerant simultaneously supplied in hot and cold stream refrigerant loop sequentially flows through this compressor, this more than first logical reversal valve, this heat exchanger, this hot driving heat exchanger, this refrigeration interchanger, this junction station and this more than second logical reversal valve, returns this compressor;
Refrigerant in this defrosting refrigerant loop flows through this compressor, this more than first logical reversal valve, this cold/hot driving heat exchanger, this heat exchanger and this more than second logical reversal valve in order, returns this compressor;
This duplexure at least connects this supply hot-fluid refrigerant loop, this supply cold flow refrigerant loop and this of simultaneously supplying in hot and cold stream refrigerant loop via this more than second logical reversal valve, and this supply hot-fluid refrigerant loop, this supply cold flow refrigerant loop or this refrigerant supplied in hot and cold stream refrigerant loop enter this duplexure by this more than second logical reversal valve simultaneously, and flow through this second coolant path of this heat exchanger, return this more than second logical reversal valve.
9. cold and hot multifunctional heat pump equipment as claimed in claim 8, is characterized in that, also comprise:
At least one control valve, is arranged on these these pipe fittings arbitrary, and this control valve flowing to for switching refrigerant, blocking refrigerant and/or regulating cold medium flux and pressure, selectively flows in this coolant circulating system to make refrigerant.
10. cold and hot multifunctional heat pump equipment as claimed in claim 9, is characterized in that, this control valve is magnetic valve or expansion valve.
11. cold and hot multifunctional heat pump equipment as claimed in claim 9, it is characterized in that, this control valve comprises and is arranged on the control valve that refrigerant leaves the other end of the 5th coolant path of this refrigeration interchanger, and it is for blocking refrigerant to avoid this refrigeration interchanger freeze damage.
12. cold and hot multifunctional heat pump equipment as claimed in claim 8, is characterized in that, also comprise:
Be arranged at the liquid refrigerants before this duplexure and detect module, to judge whether there is liquid refrigerant and the refrigerant of liquid state is imported this duplexure, this liquid refrigerants detects module between this junction station and the 4th Port of this more than second logical reversal valve, and comprise pressure detector and temperature inductor, force value and the temperature value of refrigerant is measured respectively by this pressure detector and this temperature inductor, to calculate the degree of superheat of refrigerant, to judge that whether refrigerant is containing liquid refrigerants.
13. cold and hot multifunctional heat pump equipment as claimed in claim 7, it is characterized in that, this hot driving heat exchanger is water-cooled heat exchanger, and this cold/hot driving heat exchanger is air-cooled heat exchanger.
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| TW103120577 | 2014-06-13 | ||
| TW103120577A TWI557385B (en) | 2014-06-13 | 2014-06-13 | Heat pump for heating and cooling |
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| CN105318599B CN105318599B (en) | 2017-09-05 |
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| CN113720036A (en) * | 2021-08-30 | 2021-11-30 | 广州大学 | Multifunctional double-source heat pump system and control method thereof |
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| TWI785897B (en) * | 2021-11-19 | 2022-12-01 | 謝德風 | Fluid diversion control system |
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Also Published As
| Publication number | Publication date |
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| TW201546410A (en) | 2015-12-16 |
| TWI557385B (en) | 2016-11-11 |
| CN105318599B (en) | 2017-09-05 |
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