CN107101410A - The preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream - Google Patents
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream Download PDFInfo
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- CN107101410A CN107101410A CN201610093078.1A CN201610093078A CN107101410A CN 107101410 A CN107101410 A CN 107101410A CN 201610093078 A CN201610093078 A CN 201610093078A CN 107101410 A CN107101410 A CN 107101410A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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Abstract
The present invention discloses the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream, is characterized in：Refrigerant loop adds water- to-water heat exchanger, high-pressure gas-liquid separator and four check valves than conventional heat pump；Connected mode：Compressor → water- to-water heat exchanger → high-pressure gas-liquid separator, point two-way, its outlet interface → four-way valve；It goes out the outlet of liquid interface → flow controller, third and fourth check valve；Flow controller exports the import of → first and second check valve；The outlet of the check valve of the left interface of four-way valve → interior wind heat exchanger → first, three check valve inlets → high-pressure gas-liquid separator；The outlet of the check valve of the right interface of four-way valve → outdoor wind heat exchanger → second, four check valve inlets → high-pressure gas-liquid separator；The middle interface of four-way valve → low-pressure gas-liquid separator → compressor；Water- to-water heat exchanger, heat storage water tank, water circulating pump are linked to be circulating water loop；By the opening of the switching of four-way valve and water circulating pump, stop, water heating, hot gas, cold air and cold air and the mode of hot water four can be obtained.
Description
Technical field
The present invention relates to air-conditioning/heat pump heating hot water system technology field.
Background technology
With the improvement of people ' s living standards, meet indoor heating, air-conditioning and provide hot water demand simultaneously, also require that energy-conservation and low-carbon environment-friendly as far as possible, multifunctional heat pump water heating machine group is most suitable equipment, it is also current most popular research topic, also there are the patents of many, including the applicant also applies for and has been authorized to the patent of many multifunction water-heating heat pumps, but it is due to that refrigerant is multiloop system, producer still meets difficulty in production process.And current changes in temperature Water fan, refrigerant circulation is between air heat exchanger and water cooling heat exchanger, pass through a four-way Vavle switching refrigerant circulation direction, two functions of being fabricated for warm heat water and air conditioner cold water can be realized, but the function in the empty time scale bath hot water of cooling in summer can not be realized, it is impossible to utilize the used heat water heating being discharged into when freezing in Altitude gas.
The content of the invention
In order to overcome the shortcoming that existing multi-function heating air conditioning hot heat pump refrigerant loop is complicated, retain that existing cold water air conditioner is simple in construction and refrigerant single circuit cycle advantage, refrigeration air-conditioner can not be organized while the deficiency of bath hot water processed by making up it, preferably play the energy-conserving action of heat pump, the present invention proposes a kind of preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream, by the refrigerant-cycle systems for improving cold water air conditioner, the winter system of being able to carry out heating hot gas, bath hot water while summer air-conditioning cold air, independent air-conditioning cold air processed, throughout the year individually bath hot water processed four kinds of operational modals, so as to realize heating, air-conditioning uses purpose with the three of bath hot water processed.Refrigerant loop of the present invention is simple, and technology is easily achieved, good energy-conserving effect.
The technical scheme of the preposition water- to-water heat exchanger changes in temperature hot water three-way set of the present invention
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream of the present invention, including：Compressor, four-way valve, indoor and outdoor wind heat exchanger, flow controller, low-pressure gas-liquid separator, the indoor and outdoor blower fan of indoor and outdoor wind heat exchanger configuration, water- to-water heat exchanger and heat storage water tank；Described four-way valve has four interfaces, and the air inlet of four-way valve is individually placed in the side of four-way valve body, and the opposite side of four-way valve body is disposed with three interfaces：Left interface, middle interface and right interface；Four-way valve is in refrigerant when doing heat pump cycle, the air inlet of four-way valve body and left orifice, middle interface and right orifice；Four-way valve is in refrigerant when doing kind of refrigeration cycle, the air inlet of four-way valve body and right orifice, middle interface and left orifice；Indoors, outdoor wind heat exchanger is disposed with first and second temperature sensor on the refrigerant line of flow controller；Pressure sensor is disposed with compressor air-discharging, air inlet pipeline；Described water- to-water heat exchanger is the board-like or cylinder pipe heat exchanger that refrigerant exchanges heat with water；
It is characterized in that：The refrigerant loop of the preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream, also increases a high-pressure gas-liquid separator and four check valves of check valve first, second, third and fourth；Described high-pressure gas-liquid separator be a cylinder tank or under small upper canister horn-like greatly, tank body has four interfaces：Outlet interface, the feed liquor at middle part or the gas interface at top, go out liquid interface and the insertion of top conduit of bottom enter liquid interface close to fill bottom；Described flow controller is can to automatically adjust the heating power expansion valve or electric expansion valve of throttling degree；The composition and connected mode of the refrigerant loop be：The exhaust outlet of compressor and the refrigerant passage air inlet of water- to-water heat exchanger are connected, and the refrigerant passage outlet of water- to-water heat exchanger is connected with the feed liquor or gas interface of high-pressure gas-liquid separator；Outlet interface and bottom at the top of high-pressure gas-liquid separator go out liquid interface, and the import with the air inlet and flow controller of four-way valve respectively is connected；The outlet of flow controller is connected with the import of first and second check valve；The outlet of first and second check valve, is connected with the left end liquid inlet and outlet connectors of indoor and outdoor wind heat exchanger, is also connected respectively with the import of third and fourth check valve respectively；The outlet of third and fourth check valve, is connected with the liquid interface that enters of high-pressure gas-liquid separator altogether；The right-hand member gas inlet and outlet connectors of indoor and outdoor wind heat exchanger, are connected with the left and right interface of four-way valve respectively；The middle interface of four-way valve is connected with the import of low-pressure gas-liquid separator；The outlet of low-pressure gas-liquid separator and the import of compressor are connected；The loop being linked to be is plugged with refrigerant liquid feed valve, and loop is filled with refrigerant；
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream,It is characterized in that：Indoor and outdoor wind heat exchanger is finned coil heat exchanger；The right-hand member gas inlet and outlet connectors position of indoor and outdoor wind heat exchanger is higher than left end liquid inlet and outlet connectors position；During installation, the inlet position of the left end liquid inlet and outlet connectors position high-pressure gas-liquid separator of indoor and outdoor wind heat exchanger；
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream,It is characterized in that：The water passage of described water- to-water heat exchanger connects on circulating water loop, the circulation water inlet connecting line of water- to-water heat exchanger into and out of interface circulating water outlet respectively with heat storage water tank, import and is provided with water circulating pump；The circulating water outlet of described heat storage water tank, interface are at the bottom of heat storage water tank, middle part, and the top top of heat storage water tank is additionally provided with hot water outlet, stays and is provided with hot water effluent's valve on the hot-water outlet pipe's joint being connected with the hot-water line of user；The admitting pipe joint of running water is plugged on circulation water inlet connecting line, is provided with water intaking valve and water feeding one-way valve, is stayed and be connected with running water pipe；Heat storage water tank and circulating water loop fill water；Hot water temperature sensor is disposed with heat storage water tank top；
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream,It is characterized in that：By the opening of the switching of four-way valve and water circulating pump, stop, the method for operation with regard to four kinds of functions can be obtained：Water heating, refrigeration gas and water heating, heat gas and refrigeration gas；
The refrigerant flow circuit of water heating mode is：The right interface of the check valve of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → flow controller → second → outdoor wind heat exchanger → four-way valve is to middle interface → low-pressure gas-liquid separator → compressor；It controls to be compressor and outdoor fan operating, and indoor fan stops, and four-way valve is in heat pump cycle state, water circulating pump operating；Refrigerant absorbs heat in outdoor wind heat exchanger and evaporated without heat exchange in water- to-water heat exchanger exothermic condensation water heating, indoors wind heat exchanger；
Refrigeration gas and the refrigerant flow circuit of water heating mode are：The left interface of the check valve of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → flow controller → first → interior wind heat exchanger → four-way valve is to middle interface → low-pressure gas-liquid separator → compressor, it controls to be compressor and indoor fan operating, outdoor fan stops, four-way valve is in kind of refrigeration cycle state, water circulating pump operating；Refrigerant is in water- to-water heat exchanger exothermic condensation water heating, in outdoor wind heat exchanger without heat exchange, indoors wind heat exchanger absorption refrigeration gas；
Heating the refrigerant flow circuit of gas mode is：The air inlet of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → four-way valve is to the right interface of the check valve of left interface → interior wind heat exchanger → three check valves → high-pressure gas-liquid separator → flow controller → second → outdoor wind heat exchanger → four-way valve to middle interface → low-pressure gas-liquid separator → compressor；It controls to be compressor, the operating of indoor and outdoors blower fan, and four-way valve is in heat pump cycle state, and water circulating pump is closed down；Refrigerant, without heat exchange, absorbs heat in outdoor wind heat exchanger and evaporated in water- to-water heat exchanger, and wind heat exchanger heat release indoors heats gas；
Refrigeration gas mode refrigerant flow circuit be：The air inlet of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → four-way valve is to the left interface of the check valve of right interface → outdoor wind heat exchanger → four check valves → high-pressure gas-liquid separator → flow controller → first → interior wind heat exchanger → four-way valve to middle interface → low-pressure gas-liquid separator → compressor, it controls to be compressor, the operating of indoor and outdoors blower fan, four-way valve is in kind of refrigeration cycle state, and water circulating pump is closed down；Refrigerant in water- to-water heat exchanger without heat exchange, in outdoor wind heat exchanger exothermic condensation, wind heat exchanger absorption refrigeration gas indoors；
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream,It is characterized in that：The water passage of described water- to-water heat exchanger connects on circulating water loop or is also equipped with waterway electromagnetic valve into and out of interface circulating water outlet respectively with heat storage water tank, import, and when performing four kinds of function methods of operation, the control mode of waterway electromagnetic valve is identical with the control mode of water circulating pump.
The innovative point of the present invention mainly has：
1, the preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream, on the basis of the refrigerant loop of general cooling and heating air conditioner, a water- to-water heat exchanger is added between exhaust outlet of compressor and four-way valve air inlet, again using high-pressure gas-liquid separator the refrigerant progress gas-liquid separation by water- to-water heat exchanger, and allow liquid refrigerant directly to go throttling, gas refrigerant is allowed to go the design of throttling again by the condensed liquid of wind heat exchanger again, for whole system, four kinds of function operational modals can be organized, and control system is very simple, no matter which kind of state four-way valve is in, just can be with water heating as long as starting water circulating pump, the function of air conditioner can just be returned by stopping water circulating pump.
2nd, the preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream by a throttling element and four check valves, constitute to four operational modals：Water heating, refrigeration gas and water heating, heat gas and refrigeration gas, according to demand difference regulation throttling the characteristics of；
3, because flow controller has had the very big pressure loss liquid flow is out-of-date, so flow controller is exactly blocking effect to gas in same pressure differential, this just stops in water circulating pump, water- to-water heat exchanger do not have current by when, force that the exhaust of compressor must flow to indoor wind heat exchanger or outdoor wind heat exchanger is gone, because indoor fan or outdoor fan are operated, refrigerant heat release condenses into liquid, fluid density is bigger than gas, gas condensation process just constantly aspirates the refrigerant gas of high-pressure gas-liquid separator, the liquid refrigerant of condensation, indoors, the left end liquid inlet and outlet connectors of outdoor wind heat exchanger are more than interior to the pressure that liquid on the pipeline between the inlet of high-pressure gas-liquid separator is produced, the pressure that the right-hand member gas inlet and outlet connectors of outdoor wind heat exchanger are produced to gas on the pipeline between the gas outlet of high-pressure gas-liquid separator, so the refrigerant liquid condensed is known from experience flows into high-pressure gas-liquid separator again, and from the liquid outlet of its bottom, after being depressured by flow controller, flow to outdoor wind heat exchanger or indoor wind heat exchanger, absorb heat again evaporation, compressor is flowed back to again；With the three-way set of this principle design, the control valve of refrigerant loop is considerably less, substantially increases operational reliability.
3rd, the gas outlet of the high-pressure gas-liquid separator is connected with four-way valve intake interface, no matter whether water- to-water heat exchanger exchanges heat water heating, the refrigerant for flowing into high-pressure gas-liquid separator is liquid or gas, it can ensure that four-way valve is in gas return path to work, four-way valve is avoided when by liquid, because the minute leakage of four-way valve, highly pressurised liquid is directly leaked into low pressure air circuit and gone, the efficiency of system will be substantially reduced.
4th, the preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream, different modalities operation in, particularly water heating mode when, will not produce refrigerant liquid rest on certain air cooling heat exchanger and make operating loop occur lack refrigerant amount phenomenon；Because the structure of the present invention, when heating water condition, the coil pipe of the interior wind heat exchanger of high pressure or outdoor wind heat exchanger is mainly gas and is full of, the liquid of its original can gradually participate in circulation, the liquid of demand in the coil pipe of supplementary feed heat exchanger, this is cleverly to design very much, i.e. the heat pump refrigerant refrigerant amount of this structure is easy to optimization, refrigerant amount is constant during operation, stable.
5th, unit defrosting of the present invention is using the heat of heat storage water tank hot water, and defrosting heat abundance, therefore, it is possible to defrost in a short time thoroughly, ensure that single-unit stream preposition water- to-water heat exchanger changes in temperature hot water three-way set winter is normally run.
In summary, advance, the innovation and practicality of the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream of the invention are obvious.
Brief description of the drawings
Fig. 1 is the basic structure schematic diagram and water heating mode principle explanatory diagram of the preposition water- to-water heat exchanger changes in temperature hot water three-way set embodiment 1 of single-unit stream of the present invention.
Fig. 2 is the refrigeration gas and water heating mode explanation figure of embodiments of the invention 1.
Fig. 3 is that embodiments of the invention 1 heat gas mode explanation figure.
Fig. 4 is that waterway electromagnetic valve is added with the refrigeration gas mode explanation figure of embodiments of the invention 2, water-flow circuit.
Fig. 5 is the defrosting mode explanation figure of embodiments of the invention 1.
Embodiment：
With reference to embodiment and its accompanying drawing, the present invention is further illustrated, but the present invention is not limited to this.
Embodiment
1
As shown in Fig. 1,2,3 and 5, for the basic structure of the preposition water- to-water heat exchanger changes in temperature hot water three-way set embodiment 1 of single-unit stream of the present invention, including compressor 1, water- to-water heat exchanger 2, high-pressure gas-liquid separator 3, four-way valve 4, flow controller 6 and first, second, third and fourth check valve D1, D2, D3, D4, indoor wind heat exchanger 5 and indoor fan 5a, outdoor wind heat exchanger 7 and outdoor fan 7a, low-pressure gas-liquid separator 8, heat storage water tank 9 and water circulating pump 10；Temp probe T1, T2, T3 and pressure probe P1, P2；Described high-pressure gas-liquid separator 3 is a cylinder tank, outlet interface, the feed liquor at middle part or gas interface, bottom provided with top go out liquid interface and conduit insertion in top enters liquid interface close to bottom is filled；The refrigerant loop of the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream of embodiment 1 is constituted and connected mode is：The exhaust outlet of compressor 1 is connected with the refrigerant passage air inlet of water- to-water heat exchanger 2, and the refrigerant passage outlet of water- to-water heat exchanger 2 is connected with the feed liquor or gas interface of high-pressure gas-liquid separator 3；The air inlet connection of outlet interface and four-way valve at the top of high-pressure gas-liquid separator, the import connection for going out liquid interface and flow controller of bottom；The outlet of flow controller 6 is connected with first and second check valve D1, D2 import；The outlet of first and second check valve, respectively the left end liquid inlet and outlet connectors with indoor and outdoor wind heat exchanger 5,7 be connected, the also import respectively with third and fourth check valve D3, D4 is connected；The outlet of third and fourth check valve, is connected with the liquid interface that enters of high-pressure gas-liquid separator altogether；The right-hand member gas inlet and outlet connectors of indoor and outdoor wind heat exchanger, are connected with the left and right interface of four-way valve respectively；The middle interface of four-way valve is connected with the import of low-pressure gas-liquid separator 8；The outlet of low-pressure gas-liquid separator and the import of compressor are connected；The loop being linked to be is plugged with refrigerant liquid feed valve GF, and loop is filled with refrigerant R22 or R134a.
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream, there is three parts：Outdoor unit, indoor set and heat storage water tank；Outdoor unit is provided with compressor 1, water- to-water heat exchanger 2, high-pressure gas-liquid separator 3, four-way valve 4, flow controller 6 and first, second, third and fourth check valve D1, D2, D3, D4, outdoor wind heat exchanger 7 and outdoor fan 7a, low-pressure gas-liquid separator 8；Indoor set mainly has indoor wind heat exchanger 5 and indoor fan 5a；Indoor and outdoor wind heat exchanger is finned coil heat exchanger, and their installation site needs to ensure that right-hand member gas inlet and outlet connectors position is higher than left end liquid inlet and outlet connectors, the inlet position of left end liquid inlet and outlet connectors position high-pressure gas-liquid separator.Outdoor unit and indoor set with copper pipe connect refrigerant loop.
The circulating water outlet of described heat storage water tank 9, import are at the bottom of heat storage water tank, middle part；The water passage of described water- to-water heat exchanger 2 connects on circulating water loop, the circulation water inlet connecting line of water- to-water heat exchanger into and out of interface circulating water outlet respectively with heat storage water tank 9, import and is provided with water circulating pump 10, or is also equipped with waterway electromagnetic valve；The top top of heat storage water tank is additionally provided with hot water outlet, stays the hot-water outlet pipe's joint being connected with the hot-water line of user to be provided with hot water effluent's valve F2；The admitting pipe joint of running water is plugged on circulation water inlet connecting line, is provided with water intaking valve F1 and water feeding one-way valve S1, is stayed and be connected with running water pipe；Heat storage water tank and water-flow circuit fill water；Temperature sensor T3 is disposed with heat storage water tank top.
The preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream, by the opening of the switching of four-way valve and water circulating pump, stops, the method for operation with regard to that can obtain four kinds of functions：Water heating, refrigeration gas and water heating, heat gas and refrigeration gas；
As shown in Figure 1, the refrigerant flow circuit of water heating mode is：The right interface of the check valve of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → flow controller → second → outdoor wind heat exchanger → four-way valve is to middle interface → low-pressure gas-liquid separator → compressor；It controls to be compressor and outdoor fan operating, and indoor fan stops, and four-way valve is in heat pump cycle state, water circulating pump operating；Refrigerant absorbs heat in outdoor wind heat exchanger and evaporated without heat exchange in water- to-water heat exchanger exothermic condensation water heating, indoors wind heat exchanger；
As shown in Figure 2, refrigeration gas and the refrigerant flow circuit of water heating mode are：The left interface of the check valve of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → flow controller → first → interior wind heat exchanger → four-way valve is to middle interface → low-pressure gas-liquid separator → compressor, it controls to be compressor and indoor fan operating, outdoor fan stops, four-way valve is in kind of refrigeration cycle state, water circulating pump operating；Refrigerant is in water- to-water heat exchanger exothermic condensation water heating, in outdoor wind heat exchanger without heat exchange, indoors wind heat exchanger absorption refrigeration gas；
As shown in Figure 3, heating the refrigerant flow circuit of gas mode is：The air inlet of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → four-way valve is to the right interface of the check valve of left interface → interior wind heat exchanger → three check valves → high-pressure gas-liquid separator → flow controller → second → outdoor wind heat exchanger → four-way valve to middle interface → low-pressure gas-liquid separator → compressor；It controls to be compressor, the operating of indoor and outdoors blower fan, and four-way valve is in heat pump cycle state, and water circulating pump is closed down；Refrigerant, without heat exchange, absorbs heat in outdoor wind heat exchanger and evaporated in water- to-water heat exchanger, and wind heat exchanger heat release indoors heats gas；
Embodiment 2, referring to accompanying drawing 4
The refrigerant loop basic structure and connected mode of the preposition water- to-water heat exchanger changes in temperature hot water three-way set embodiment 2 of single-unit stream of the present invention are identical with embodiment 1, with differing only in for embodiment 1, increase a waterway electromagnetic valve 11 in the circulating water loop that its water- to-water heat exchanger is connected with heat storage water tank, referring to accompanying drawing 4.Accompanying drawing 4 is the structural representation of embodiment 2 and the refrigerant flow circuit figure of execution refrigeration gas mode, and its refrigerant flow circuit for freezing gas mode is：The air inlet of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → four-way valve is to the left interface of the check valve of right interface → outdoor wind heat exchanger → four check valves → high-pressure gas-liquid separator → flow controller → first → interior wind heat exchanger → four-way valve to middle interface → low-pressure gas-liquid separator → compressor, it controls to be compressor, the operating of indoor and outdoors blower fan, four-way valve is in kind of refrigeration cycle state, water circulating pump is closed down, and waterway electromagnetic valve is closed；Refrigerant in water- to-water heat exchanger without heat exchange, in outdoor wind heat exchanger exothermic condensation, wind heat exchanger absorption refrigeration gas indoors；When embodiment 2 performs other functional modes, the control mode of waterway electromagnetic valve is identical with the control mode of water circulating pump.
As shown in Figure 5, the defrosting mode explanation figure of embodiment 1, refrigerant flow circuit is identical with the refrigerant flow circuit of refrigeration gas and water heating during defrosting, simply indoor and outdoors blower fan all shuts down, and water circulating pump is opened, refrigerant obtains heat and the heat in water- to-water heat exchanger absorption hot water that work done during compression is transferred from compressor, and heat, defrost defrosting are released in outdoor wind heat exchanger.
Claims (5)
1. the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream, including：Compressor, four-way valve, indoor and outdoor wind heat exchanger, flow controller, low-pressure gas-liquid separator, the interior of indoor and outdoor wind heat exchanger configuration,
Outdoor fan, water- to-water heat exchanger and heat storage water tank；Described four-way valve has four interfaces, and the air inlet of four-way valve is individually placed in the side of four-way valve body, and the opposite side of four-way valve body is disposed with three interfaces：Left interface, middle interface and right interface；Four-way valve is in refrigerant when doing heat pump cycle, the air inlet of four-way valve body and left orifice, middle interface and right orifice；Four-way valve is in refrigerant when doing kind of refrigeration cycle, the air inlet of four-way valve body and right orifice, middle interface and left orifice；Indoors, outdoor wind heat exchanger is disposed with first and second temperature sensor on the refrigerant line of flow controller；Pressure sensor is disposed with compressor air-discharging, air inlet pipeline；Described water- to-water heat exchanger is the board-like or cylinder pipe heat exchanger that refrigerant exchanges heat with water；
It is characterized in that：The refrigerant loop of the preposition water- to-water heat exchanger changes in temperature hot water three-way set of described single-unit stream, also increases a high-pressure gas-liquid separator and four check valves of check valve first, second, third and fourth；Described high-pressure gas-liquid separator be a cylinder tank or under small upper canister horn-like greatly, tank body has four interfaces：Outlet interface, the feed liquor at middle part or the gas interface at top, go out liquid interface and the insertion of top conduit of bottom enter liquid interface close to fill bottom；Described flow controller is can to automatically adjust the heating power expansion valve or electric expansion valve of throttling degree；The composition and connected mode of the refrigerant loop be：The exhaust outlet of compressor and the refrigerant passage air inlet of water- to-water heat exchanger are connected, and the refrigerant passage outlet of water- to-water heat exchanger is connected with the feed liquor or gas interface of high-pressure gas-liquid separator；Outlet interface and bottom at the top of high-pressure gas-liquid separator go out liquid interface, and the import with the air inlet and flow controller of four-way valve respectively is connected；The outlet of flow controller is connected with the import of first and second check valve；The outlet of first and second check valve, is connected with the left end liquid inlet and outlet connectors of indoor and outdoor wind heat exchanger, is also connected respectively with the import of third and fourth check valve respectively；The outlet of third and fourth check valve, is connected with the liquid interface that enters of high-pressure gas-liquid separator altogether；The right-hand member gas inlet and outlet connectors of indoor and outdoor wind heat exchanger, are connected with the left and right interface of four-way valve respectively；The middle interface of four-way valve is connected with the import of low-pressure gas-liquid separator；The outlet of low-pressure gas-liquid separator and the import of compressor are connected；The loop being linked to be is plugged with refrigerant liquid feed valve, and loop is filled with refrigerant.
2. the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream according to claim 1,It is characterized in that：Indoor and outdoor wind heat exchanger is finned coil heat exchanger；The right-hand member gas inlet and outlet connectors position of indoor and outdoor wind heat exchanger is higher than left end liquid inlet and outlet connectors position；During installation, the inlet position of the left end liquid inlet and outlet connectors position high-pressure gas-liquid separator of indoor and outdoor wind heat exchanger.
3. the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream according to claim 1,It is characterized in that：The water passage of described water- to-water heat exchanger connects on circulating water loop, the circulation water inlet connecting line of water- to-water heat exchanger into and out of interface circulating water outlet respectively with heat storage water tank, import and is provided with water circulating pump；The circulating water outlet of described heat storage water tank, interface are at the bottom of heat storage water tank, middle part, and the top top of heat storage water tank is additionally provided with hot water outlet, stays and is provided with hot water effluent's valve on the hot-water outlet pipe's joint being connected with the hot-water line of user；The admitting pipe joint of running water is plugged on circulation water inlet connecting line, is provided with water intaking valve and water feeding one-way valve, is stayed and be connected with running water pipe；Heat storage water tank and circulating water loop fill water；Hot water temperature sensor is disposed with heat storage water tank top.
4. the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream according to claim 1,It is characterized in that：By the opening of the switching of four-way valve and water circulating pump, stop, the method for operation with regard to four kinds of functions can be obtained：Water heating, refrigeration gas and water heating, heat gas and refrigeration gas；
The refrigerant flow circuit of water heating mode is：The right interface of the check valve of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → flow controller → second → outdoor wind heat exchanger → four-way valve is to middle interface → low-pressure gas-liquid separator → compressor；It controls to be compressor and outdoor fan operating, and indoor fan stops, and four-way valve is in heat pump cycle state, water circulating pump operating；Refrigerant absorbs heat in outdoor wind heat exchanger and evaporated without heat exchange in water- to-water heat exchanger exothermic condensation water heating, indoors wind heat exchanger；
Refrigeration gas and the refrigerant flow circuit of water heating mode are：The left interface of the check valve of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → flow controller → first → interior wind heat exchanger → four-way valve is to middle interface → low-pressure gas-liquid separator → compressor, it controls to be compressor and indoor fan operating, outdoor fan stops, four-way valve is in kind of refrigeration cycle state, water circulating pump operating；Refrigerant is in water- to-water heat exchanger exothermic condensation water heating, in outdoor wind heat exchanger without heat exchange, indoors wind heat exchanger absorption refrigeration gas；
Heating the refrigerant flow circuit of gas mode is：The air inlet of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → four-way valve is to the right interface of the check valve of left interface → interior wind heat exchanger → three check valves → high-pressure gas-liquid separator → flow controller → second → outdoor wind heat exchanger → four-way valve to middle interface → low-pressure gas-liquid separator → compressor；It controls to be compressor, the operating of indoor and outdoors blower fan, and four-way valve is in heat pump cycle state, and water circulating pump is closed down；Refrigerant, without heat exchange, absorbs heat in outdoor wind heat exchanger and evaporated in water- to-water heat exchanger, and wind heat exchanger heat release indoors heats gas；
Refrigeration gas mode refrigerant flow circuit be：The air inlet of compressor → water- to-water heat exchanger → high-pressure gas-liquid separator → four-way valve is to the left interface of the check valve of right interface → outdoor wind heat exchanger → four check valves → high-pressure gas-liquid separator → flow controller → first → interior wind heat exchanger → four-way valve to middle interface → low-pressure gas-liquid separator → compressor, it controls to be compressor, the operating of indoor and outdoors blower fan, four-way valve is in kind of refrigeration cycle state, and water circulating pump is closed down；Refrigerant in water- to-water heat exchanger without heat exchange, in outdoor wind heat exchanger exothermic condensation, wind heat exchanger absorption refrigeration gas indoors.
5. the preposition water- to-water heat exchanger changes in temperature hot water three-way set of single-unit stream according to claim 1,It is characterized in that：The water passage of described water- to-water heat exchanger connects on circulating water loop or is also equipped with waterway electromagnetic valve into and out of interface circulating water outlet respectively with heat storage water tank, import, and when performing four kinds of function methods of operation, the control mode of waterway electromagnetic valve is identical with the control mode of water circulating pump.
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| CN107101410B (en) | 2019-08-06 |
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