CN102384586B - Parallel-connection type mutually-helped defrosting water heater of air source heat pump - Google Patents
Parallel-connection type mutually-helped defrosting water heater of air source heat pump Download PDFInfo
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Abstract
The invention discloses the technical scheme of a parallel-connection type mutually-helped defrosting water heater of an air source heat pump, which is characterized in that a machine set is provide with two or more refrigerant return circuit systems which are divided into two groups to defrost successively. Air inlet channels of the two groups of systems are separated by a partition plate, water inlets of hot water heat exchangers of the systems are in parallel connection with a water outlet of a water circulating pump, and water outlets of the hot water heat exchangers of the systems are all provided with two paths of ports. One path port is connected with a constant temperature water outlet valve and then in parallel connection to a main hot water outlet pipe, and the other path port is connected with a check valve and then in parallel connection to a main circulating water pipe. The main circulating water pipe provide with a circulating water regulating valve and a water inlet pipe are in parallel connection onto the water inlet of the water circulating pump together to form a parallel-connection type hot water heat exchange system of hot water internal circulation. When defrosting is performed, the systems for defrosting are shifted to bypass hot air or reverse circulating defrosting, the other group of systems continue to perform heating cycle, and the two groups of systems are mutually assist to defrost through the hot water internal circulation, thereby thoroughly resolving the defrosting problem of the water heater of the air source heat pump and getting rid of incomplete defrosting. In addition, the systems provided with subcoolers passably improve efficiency by15%.
Description
Technical field:
The present invention relates to the Teat pump boiler technical field.
Background technology:
Air source hot pump water heater absorbs heat from air, use hot water for life after promoting temperature, and Energy Efficiency Ratio is in 2.5～4 scopes.So, be energy-conservation good product.But air source heat pump is when temperature uses near the zero degree wet weather in the winter time, frosting easily, and it is not thorough to defrost, inefficiency.Because directly-heated type air source hot pump water heater, be the hot water that design temperature can both be directly exported in the water inlet that how low water temperature is no matter continuously through Teat pump boiler heating back, the hot water stay in grade, the Teat pump boiler starting can obtain hot water, than having compared a lot of advantages with storage tank circulation mode of heating; Because need after Teat pump boiler moves the long duration, could obtain hot water with storage tank circulation mode of heating, and when the water tank water temperature approaches setting high temperature, Teat pump boiler efficient is low, the easy superelevation of condensing pressure, because hot water uses the restriction of fluctuating range, the heat storage water tank volume can not all utilize etc.But the defrosting of directly-heated type air source hot pump water heater encounters a difficulty, because no matter adopt recycled back or bypass hot gas defrosting mode, all because there not being low-temperature heat source, can't carry out; And adopt the electrical heating defrosting, cost is big, energy consumption is big, the electric heating tube that is arranged on the wind regime evaporimeter usually but hinders heat exchange, and during defrosting because electric heating tube and frosting pipe have distance, non-direct heat transfer, defrosting efficiency is very low.Therefore, present Teat pump boiler all can only rest on hot water heat exchanger and heat storage water tank systemic circulation mode of heating, utilizes the hot water of heat storage water tank to defrost.Therefore need the new Defrost method of research, thoroughly solve directly-heated type air source hot pump water heater defrosting problem.The applicant had once applied for " air source hot pump water heater and the five circulation double heat source heat pump water heaters of the defrosting of helping each other ", application number 201020240385.6 and " help each other Defrost method and the five circulation double heat source heat pump water heaters of air source hot pump water heater " application number 201010211846.1, connect in the water route of the condenser of two groups of Teat pump boilers of its defrosting of helping each other, when not defrosting use, one high and one low situation can appear in the condensing pressure of two groups of heat pumps, is further improved.
Technology contents:
In order to overcome the above-mentioned deficiency of existing single air source hot pump water heater, the present invention proposes the air source hot pump water heater of the parallel defrosting of helping each other, can need not the hot water heat of auxiliary electrical thermal source and heat storage water tank, realize thoroughly defrosting fast, and when using frostless season, the parallel condensing pressure of two groups of air source hot pump water heaters of helping each other defrosting can be not out of balance, thereby make the air source heat pump throughout the year can both efficient operation.
The technical solution used in the present invention is described as follows:
The air source hot pump water heater of the parallel defrosting of helping each other includes refrigerant circuit systems, hot water heat-exchange system, signals collecting and circuit control system; Described refrigerant circuit systems includes compressor, hot water heat exchanger, filter, reservoir, flow controller, wind regime evaporimeter, gas-liquid separator; The wind regime evaporimeter is furnished with fan;
It is characterized in that: the described parallel defrost air source heat pump water heater of helping each other, have two refrigerant circuit systems independently separately at least, the water route inlet parallel of the hot water heat exchanger of each refrigerant circuit systems condenser is connected with the water inlet main of hot water heat exchanger, the water route outlet of each hot water heat exchanger divides two-way to be connected with the water inlet of constant temperature water flow control valve and the import of interior recirculated water check valve respectively, the delivery port of each constant temperature water flow control valve in parallel with go out hot-water supply main and be connected, outlet of recirculated water check valve is in parallel in each is connected with the main of interior recirculated water, the circulating water flow adjustable valve is housed on the main of interior recirculated water, one of two parallel interfaces of the water side of the main of interior recirculated water and the water inlet of water circulating pump are connected, and the water circulating pump delivery port is connected with the water inlet main of hot water heat exchanger; Two of two parallel interfaces of water circulating pump import are connected with additional water inlet pipe, at additional water inlet pipe entering water electromagnetic valve and water inlet check valve are installed; The main of interior recirculated water and go out also to be connected with standby manual outlet pipe between the hot-water supply main is equipped with a water flow manual modulation valve at standby manual outlet pipeline; Constitute the hot water heat-exchange system of circulation in the parallel hot water thus; Each independent cooling agent circuit system of the parallel defrost air source heat pump water heater of helping each other divides two or more defrosting groups successively to defrost, the air inlet duct of the wind regime evaporimeter of the refrigerant circuit systems of different defrosting groups is isolated with dividing plate, and the number of the refrigerant circuit systems of defrosting group simultaneously must not surpass half of refrigerant circuit systems sum of unit; The defrosting order of different defrosting groups is undertaken by the setting order or is sorted by the priority of sending the defrosting signal; When source pump obtains to require the signal of defrosting, refrigerant circuit systems by a certain defrosting group of agreement is carried out defrost cycle earlier, other defrosting group continues to heat the water circulation, Chu Shuan system withdraws from defrost cycle in the ban, and after recovering normally to heat the water circulation, other system that waits for the defrosting group enters defrost cycle more in regular turn; In system's defrost process of certain defrosting group, the hot water that other system produces circulates in the hot water by the hot water heat-exchange system, constantly carries the heat of defrosting to the system that is defrosting, and defrosting fast thoroughly; Finish when each system of complete machine defrosts, the complete machine defrost process finishes, and recovers normally to heat the water circulation; In the complete machine defrost process, the constant temperature water flow control valve of each refrigerant circuit systems correspondence is low or high according to hot water heat exchanger leaving water temperature separately automatically, automatically close or open, whole system defrosts remaining heat also can be by the output of constant temperature water flow control valve; The defrost cycle of refrigerant circuit systems according to the constituted mode of refrigerant circuit systems, or adopts the bypass hot gas Defrost mode of helping each other, or adopts the reverse circulation Defrost mode of helping each other; The bypass hot gas Defrost mode of helping each other, in refrigerant circuit systems, increase the bypass hot gas line is arranged, described bypass hot gas line is to be connected between the inlet of the refrigerant outlet of hot water heat exchanger and wind regime evaporimeter, at the bypass hot gas line defrost valve is installed; When defrost cycle, open defrost valve, cold-producing medium absorbs the heat removal frost that other system provides from hot water heat exchanger; The reverse circulation Defrost mode of helping each other, increase cross valve between exhaust outlet of compressor that need be in the refrigerant circuit system and the refrigerant inlet of hot water heat exchanger, during reverse circulation, the cross valve coil does not become electricity is arranged from there being electricity, switches the cross valve path direction, hot water heat exchanger in defrost cycle as evaporimeter, cold-producing medium absorbs the heat of vaporization that other system provides therein, compressed machine compression enters the wind regime evaporimeter, emits heat of condensation defrosting;
The described parallel defrost air source heat pump water heater of helping each other, the form difference according to its refrigerant circuit systems constitutes has five kinds of forms:
First kind, a kind of parallel defrost air source heat pump water heater of helping each other that adopts the bypass hot gas defrosting, described refrigerant circuit systems also includes the bypass hot gas line of defrost valve and defrosting; Its connected mode is by refrigerant passage, reservoir, filter, flow controller, wind regime evaporimeter, gas-liquid separator, the compressor series connection in regular turn of compressor, hot water heat exchanger, to constitute the refrigerant loop that heats the water circulation; Between the inlet of the refrigerant outlet of the hot water heat exchanger of refrigerant loop and wind regime evaporimeter, also be connected with the bypass hot gas line of defrosting, at the bypass hot gas line of defrosting defrost valve be installed, fill cold-producing medium in the loop that is linked to be; When system carries out defrost cycle, defrost valve is opened, and cold-producing medium hot gas directly enters wind regime evaporimeter heat release defrost by the bypass hot gas line of hot water heat exchanger by defrosting, and low-temperature refrigerant gas is drawn back by compressor, the hot water heat exchanger heat absorption is sent in recompression, the circulation defrosting; Except frost season, the fan of wind regime evaporimeter closes;
Second kind, a kind of parallel defrost air source heat pump water heater of helping each other that adopts the reverse circulation defrosting, described refrigerant circuit systems also includes a cross valve, and its connected mode is: by compressor outlet and cross valve first interface, namely the cross valve air inlet connects; With the interior cross valve interface that is communicated with of air inlet, be not designated as cross valve second interface when coil of cross valve has electricity, be connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger, the inlet of the reservoir of connecting in regular turn, filter, flow controller, wind regime evaporimeter; The gas outlet of wind regime evaporimeter and cross valve the 3rd interface are connected with the cross valve interface of connection in the air inlet when namely the coil of cross valve has electricity; Cross valve the 4th interface, namely three interfaces, one row public gas outlet placed in the middle is connected with the air inlet of gas-liquid separator; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; Fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, the cross valve coil had electricity, the cross valve commutation, and the cold-producing medium reverse circulation, fan closes;
The third, a kind of parallel defrost air source heat pump water heater of helping each other that adopts the bypass hot gas defrosting and have subcooler, described refrigerant circuit systems also includes the bypass hot gas line of subcooler, defrost valve and defrosting; Its connected mode is by refrigerant passage, reservoir, subcooler, filter, flow controller, wind regime evaporimeter, gas-liquid separator, the compressor series connection in regular turn of compressor, hot water heat exchanger, to constitute the refrigerant loop that heats the water circulation; Between the inlet of the refrigerant outlet of the hot water heat exchanger of refrigerant loop and wind regime evaporimeter, also be connected with the bypass hot gas line of defrosting, at the bypass hot gas line of defrosting defrost valve be installed, fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, defrost valve was opened, and cold-producing medium directly enters the wind regime evaporimeter by the bypass hot gas line of hot water heat exchanger by defrosting, and fan closes; After the water route parallel connection of the subcooler of each refrigerant circuit systems, between the import that is inserted in the water circulating pump of the hot water heat-exchange system of circulation in the described parallel hot water and the water inlet check valve outlet of supplementing water water inlet pipe, constitute the hot water heat-exchange system that circulates in the parallel hot water that has subcooler;
The 4th kind, a kind of parallel defrost air source heat pump water heater of helping each other that adopts the reverse circulation defrosting and have subcooler, described refrigerant circuit systems also includes subcooler and cross valve, its connected mode is: by compressor outlet and cross valve first interface, namely the cross valve air inlet connects; With the interior cross valve interface that is communicated with of air inlet, be not designated as cross valve second interface when coil of cross valve has electricity, be connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger, the inlet of the reservoir of connecting in regular turn, filter, subcooler, flow controller, wind regime evaporimeter; At gas outlet and cross valve the 3rd interface of wind regime evaporimeter, be connected with the cross valve interface of connection in the air inlet when namely the coil of cross valve has electricity; Cross valve the 4th interface, namely three interfaces, one row public gas outlet placed in the middle is connected with the air inlet of gas-liquid separator; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; Fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, the cross valve coil had electricity, the cross valve commutation, and the cold-producing medium reverse circulation, fan closes; After the water route parallel connection of the subcooler of each refrigerant circuit systems, between the import that is inserted in the water circulating pump of the hot water heat-exchange system of circulation in the described parallel hot water and the water inlet check valve outlet of supplementing water water inlet pipe, constitute the hot water heat-exchange system that circulates in the parallel hot water that has subcooler;
The 5th kind, the defrosting of a kind of employing reverse circulation has also increased the water source heat exchangers in parallel formula defrost air source heat pump water heater of helping each other, described refrigerant circuit systems also includes water source heat exchanger and cross valve, its connected mode is: by compressor outlet and cross valve first interface, namely the cross valve air inlet connects; With the interior cross valve interface that is communicated with of air inlet, be not designated as cross valve second interface when coil of cross valve has electricity, be connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger, the inlet of the reservoir of connecting in regular turn, filter, flow controller, water source heat exchanger, wind regime evaporimeter; At gas outlet and cross valve the 3rd interface of wind regime evaporimeter, be connected with the cross valve interface of connection in the air inlet when namely the coil of cross valve has electricity; Cross valve the 4th interface, namely three interfaces, one row public gas outlet placed in the middle is connected with the air inlet of gas-liquid separator; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; Fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, the cross valve coil had electricity, the cross valve commutation, and the cold-producing medium reverse circulation, fan closes; The water route parallel connection of the water source heat exchanger of each refrigerant circuit systems, its import in parallel is connected with the water source water inlet pipe, and the water source water intaking valve is installed on the water inlet pipe, and its delivery port in parallel is connected with the water source outlet pipe, and outlet pipe is equipped with out water one-way valve at the water source; The bottom of water source heat exchanger is provided with discharge pipe line, and discharging valve is arranged on the discharge pipe line, is provided with vent valve at the top of water source heat exchanger;
Described a kind of employing reverse circulation defrosting has also increased the water source heat exchangers in parallel formula defrost air source heat pump water heater of helping each other, has the water of heating, chilled water, three kinds of functions of while chilled water and hot water, can organize six kinds of mode operations: it all is to heat water that three kinds of mode methods of operation are arranged, its cold-producing medium circulation process order all is compressor, cross valve, hot water heat exchanger, reservoir, filter, flow controller, water source heat exchanger, wind regime evaporimeter, cross valve, gas-liquid separator, compressor; First kind of mode: the heat absorption of single air source heats the water running mode, and the fan of compressor, water circulating pump, wind regime evaporimeter starts, and the cross valve coil does not have electricity, water source heat exchanger not water flowing of water route, and emptied of water; Second kind of mode: the heat absorption of single water source heats the water running mode, and compressor, water circulating pump start, and the cross valve coil does not have electricity, and the fan of wind regime evaporimeter stops, water source heat exchanger water route water flowing; The third mode: heat the water running mode from air source and water source heat absorption simultaneously, the fan of compressor, water circulating pump, wind regime evaporimeter starts, and the cross valve coil does not have electricity, water source heat exchanger water route water flowing; The 4th kind of mode: carry out the Defrost operation mode, compressor, the water circulating pump of the system that defrosts start, and the cross valve coil has electricity, and the fan of wind regime evaporimeter stops, water source heat exchanger water route water flowing; The system that does not defrost still carries out first kind or the third mode method of operation; The 5th kind of mode: the cold water method of operation of idle call processed, compressor, cross valve coil have, the fan of wind regime evaporimeter starts, and hot water heat exchanger changes the cold water of output idle call, and the water intaking valve of hot water heat-exchange system is opened, water circulating pump starts, the circulating water flow adjustable valve is closed, and the water flow manual modulation valve on the standby manual outlet pipeline is all opened, and water source heat exchanger water intaking valve is opened, water source heat exchanger water route water flowing can obtain a small amount of hot water simultaneously; The 6th kind of mode: the double water mode method of operation that heats of the cold water of idle call processed, compressor, water circulating pump starts, the cross valve coil has, the fan of wind regime evaporimeter stops, use the water source heat exchanger instead and make condenser, the whole heats of condensation of absorption refrigeration agent heat water, water source heat exchanger water intaking valve is opened, heat exchanger water route, water source output hot water, hot water heat exchanger changes the cold water of output idle call, and the water intaking valve of hot water heat-exchange system is opened, water circulating pump starts, the circulating water flow adjustable valve is closed, and the water flow manual modulation valve on the standby manual outlet pipeline is all opened, former hot water heat-exchange system output air conditioner cold water;
The described parallel defrost air source heat pump water heater of helping each other, the constant temperature water flow control valve of its described hot water heat-exchange system is the condensing pressure Water flow adjusting valve, or the constant temperature on-off valve of temperature memory alloy temperature-sensing element; When adopting the condensing pressure Water flow adjusting valve, the bellows pressure chamber of each condensing pressure Water flow adjusting valve have tube connector respectively with the compressor exhaust pipe of corresponding control flow system connect, according to the corresponding relation of condensation of refrigerant pressure and saturation temperature, selecting the pressure corresponding with setting leaving water temperature is controlled condition;
The described parallel defrost air source heat pump water heater of helping each other, the flow controller of its described refrigerant circuit systems is capillary, or electric expansion valve, or heating power expansion valve;
The described parallel defrost air source heat pump water heater of helping each other, the hot water heat exchanger of its described hot water heat-exchange system is plate type heat exchanger, or efficient jar pipe heat exchanger, or the coaxial sleeve tube heat exchanger.
In sum, main innovate point of the present invention and effect thereof be summed up as following some:
(1) designed the hot water heat-exchange system that circulates in the parallel hot water of the parallel defrost air source heat pump water heater of helping each other, be characterized in: the delivery port of the hot water heat exchanger of each system is independent separately with the path that the constant temperature outlet valve is connected with circulation check valve in the hot water, does not disturb mutually; When water circulating pump stops, each check valve of circulation waterway has been avoided ganging up of each hot water heat exchanger water route, guaranteed that each refrigerant circuit systems can work alone, gone out hot water separately, the condensing pressure of each system also can be set identical balance because of leaving water temperature; When certain refrigerant circuit systems stopped or defrosting, the hot water heat exchanger in this loop did not produce hot water, so its constant temperature outlet valve closes, and can not occur influencing leaving water temperature because of the cold water short circuit; In addition, when water circulating pump was opened, the water route mutual circulation of the hot water heat exchanger of each system was communicated with, and heat is helped each other when having guaranteed defrosting again;
(2) designed the air channel dividing plate, made the air channel of refrigerant circuit systems of each defrosting group respectively independent, guaranteed that the grouping defrosting can independently normally carry out; Because the fan of the system that defrosts is out of service, its wind regime evaporimeter substantially not with the Cryogenic air heat exchange;
(3) formulated the program of execution of the defrosting of helping each other, the defrosting that guarantees to help each other is carried out in regular turn;
(4) designed the refrigerant loop of the bypass hot gas defrosting that is applicable to the defrost air source heat pump water heater of helping each other and inverse defrosting circulation, the bypass hot gas line of the defrosting of its defrosting formula of helping each other is to be connected between the inlet of the refrigerant outlet of hot water heat exchanger of refrigerant loop and wind regime evaporimeter, not that bypass hot gas line as the defrosting of normal air source heat pump is to be connected between the inlet of compressor outlet pipe and wind regime evaporimeter, thereby guaranteed to obtain from the water passage of hot water heat exchanger the heat of defrosting;
(5) designed the parallel defrost air source heat pump water heater of helping each other that subcooler is arranged, can improve heating capacity 15% winter;
(6) owing to designed standby manual outlet pipe and at standby manual outlet pipeline a water flow manual modulation valve be installed in the hot water heat-exchange system that in parallel hot water, circulates, under all unlatching situations of water flow manual modulation valve, make the defrost air source heat pump water heater of helping each other of inverse defrosting circulation can become handpiece Water Chilling Units in summer;
(7) owing in the refrigerant loop of the defrost air source heat pump water heater of helping each other that inverse defrosting circulates, added the water source heat-exchange system, unit is had simultaneously in the winter time separately from the air source, separately from the water source, or simultaneously from the function of air source and water source absorption heat, can increase hot water output greatly; In summer, the water source heat-exchange system can be used as heat regenerator again, and unit supplies air conditioner cold water and hot water simultaneously, and COP can reach more than 8; If do not need hot water, can dispel the heat to air by transforming the wind regime evaporimeter that condenser uses into, make refrigerant condenses, make the cold water of idle call by transforming the hot water heat exchanger that evaporimeter uses into; Applicability with the cold and hot amount of the different demands of coupling.
Because the parallel defrost air source heat pump water heater of helping each other has adopted above-mentioned multinomial innovative design, closed circuit is when water circulating pump is opened in its hot water, the hot water that each refrigerant circuit systems produces can be adjusted mutually, has thoroughly solved the directly-heated type air source hot pump water heater apyrogenic difficult problem that defrosts; This is because the Defrost method of existing heat pump: reverse circulation defrosting and bypass hot gas defrosting all will be from the hot water heat exchanger draw heats, and the hot water heat exchanger in the loop of directly-heated type list air source hot pump water heater can not find supplying heat source; The defrost air source heat pump water heater of helping each other of the present invention, when adopting the bypass hot gas defrosting, need not stop compressor, the flow of refrigerant direction of hot water heat exchanger and wind regime evaporimeter remains unchanged, and the used defrosting heat of defrosting of helping each other is the heat that produces with the heat pump method, origin of heat abundance not only, and only need the part of power consumption heating, and very energy-conservation, the directly heating defrosting in pipe of cold-producing medium hot gas, the fast thawing of frost layer come off, reduce the defrosting energy consumption; So Defrost technology of the present invention has the defrosting efficiency height, advantage such as defrosting time is short, and is energy-conservation; The defrost air source heat pump water heater of helping each other of inverse defrosting provides the function of handpiece Water Chilling Units again; Circulating technology in the hot water that the present invention adopts, the defrosting that not only guaranteed to help each other can realize that circulating in the hot water when not defrosting helps to improve the hot water heat exchanger water velocity, improve heat transfer efficiency and keep the operating mode that condensing pressure is exerted oneself in the best; The subcooler that the present invention adds, the temperature that can utilize the cold excessively heat heating winter low temperature of cold-producing medium to intake in the winter time improves hot water flow about 15%; The air source hot pump water heater that the water source heat exchangers in parallel formula that the present invention adds is helped each other and defrosted is with Teat pump boiler, the water chiller/heater group independent cooling water of difference and hot water, the function of cooling water and hot water simultaneously.
In a word, technical scheme of the present invention, for air source hot pump water heater has solved a defrosting difficult problem, and provide multiple multi-functional circulatory system scheme make air source hot pump water heater in the winter time can be normally, efficient, safety, stable operation, and can develop into heat supply water, the heating of the sorrow of frostless resistance, the three-purpose heat pump machine of cooling; The present invention has bigger technological break-through, promotes the use of for air source hot pump water heater, has cleared away obstacle, very with practical value and tremendous economic meaning.
Description of drawings
Fig. 1, the embodiment of the invention 1, a kind of formation and fundamental diagram that adopts the parallel defrost air source heat pump water heater of helping each other of bypass hot gas defrosting.
Fig. 2, the embodiment of the invention 2, a kind of formation and fundamental diagram that adopts the parallel defrost air source heat pump water heater of helping each other of reverse circulation defrosting can be made the changes in temperature unit and use.
Fig. 3, the embodiment of the invention 3, a kind of formation and fundamental diagram that adopts the bypass hot gas defrosting and have the parallel defrost air source heat pump water heater of helping each other of subcooler has very high efficiency winter.
Fig. 4, the embodiment of the invention 4, a kind of formation and fundamental diagram that adopts the reverse circulation defrosting and have the parallel defrost air source heat pump water heater of helping each other of subcooler can be used as the changes in temperature unit and uses, and very high efficiency is arranged winter.
Fig. 5, the embodiment of the invention 5, a kind ofly adopt reverse circulation defrosting and increased water source heat exchangers in parallel formula help each other formation and the fundamental diagram of defrost air source heat exchanger, having independence absorbs heat from air source and water resource heat pump, heats water from air source and water source heat absorption simultaneously, summer independent cooling water, functions such as cooling water and hot water simultaneously.
Division board installation site, the two defrosting group air channels schematic diagram of a kind of box unit of Fig. 6, the parallel defrost air source heat pump water heater of helping each other of the present invention.
Division board installation site, the two defrosting group air channels schematic diagram of a kind of V-type unit of Fig. 7, the parallel defrost air source heat pump water heater of helping each other of the present invention.
Specific embodiment:
Further describe formation and the operation principle of the air source hot pump water heater of the parallel defrosting of helping each other of the present invention by embodiment below in conjunction with accompanying drawing.But content of the present invention is not limited only to shown in the accompanying drawing.
The structural relation of embodiment 1 and operation principle are by Fig. 1 and Fig. 6 explanation.
Shown in Figure 1, adopt the refrigerant circuit systems of the parallel defrost air source heat pump water heater of helping each other of bypass hot gas defrosting and the structural relation schematic diagram of hot water heat-exchange system for the embodiment of the invention 1 a kind of; The parallel defrost air source heat pump water heater of helping each other of embodiment 1 includes two refrigerant circuit systems independently separately, the hot water heat-exchange system of circulation in parallel hot water, unified signals collecting and circuit control system; As shown in Figure 1, two refrigerant circuit systems are respectively a system and b system, and the accessory of two systems is all represented with footnote a and b respectively; Be example with a system, formation and the connected mode of described refrigerant circuit systems are described: a system is by refrigerant passage, reservoir 3a, the filter Ga of compressor 1a, hot water heat exchanger 2a, flow controller Ja, wind regime evaporimeter 5a, gas-liquid separator 7a, compressor 1a are connected into refrigerant circulation loop in regular turn, between the inlet of the refrigerant outlet of hot water heat exchanger 2a and wind regime evaporimeter 5a, also be connected with the bypass hot gas line of defrosting, bypass hot gas line in defrosting is equipped with defrost valve SFa, fills cold-producing medium in the loop that is linked to be; The air channel dividing plate 10 of a system and b system is arranged in the centre of the common casing of two systems, wind regime evaporimeter 5a and the 5b of a system and b system, fan 6a and 6b are in the both sides of air channel dividing plate 10 respectively, referring to Fig. 6 (a) and Fig. 6 (b), two groups of refrigerant circuit systems of embodiment 1 are installed in the box casing, the left surface of casing facade and the left back side are the wind regime evaporator coil fin 5a of a system, the right flank of casing facade and the right back side are the wind regime evaporator coil fin 5b of b system, the casing front is closure panel and instrument face plate, the left side of box top and right-hand part are equipped with fan 6a and the 6b of a system and b system respectively, erect in the middle of the casing and place an air inlet duct dividing plate 10, two Room about casing is divided into, other parts of a system and b system, as compressor 1a etc., all be placed on respectively casing about on the two indoor end framed bents, Fig. 6 (a) is the main cross-sectional schematic that the space of the Teat pump boiler of embodiment 1 is arranged, Fig. 6 (b) is its vertical view schematic diagram;
The hot water heat-exchange system of circulation in the described parallel hot water, as shown in Figure 1, it constitutes and connected mode is: the hot water heat exchanger 2a of a system and b system and the water inlet of 2b also connect with the water inlet main of hot water heat exchanger, and water inlet main one end is connected with the delivery port of water circulating pump 8; The outlet of the water route of hot water heat exchanger 2a and 2b is connected with the import of the water inlet of two constant temperature water flow control valve ZFa and ZFb and two interior recirculated water check valve Dsa and Dsb respectively, the delivery port of two constant temperature water flow control valves in parallel with go out hot-water supply main and be connected, the outlet of two interior recirculated water check valves is in parallel to be connected with the main of interior recirculated water, circulating water flow adjustable valve TF1 is housed on the main of interior recirculated water, and one of two parallel interfaces of the water side of the main of interior recirculated water and the water inlet of water circulating pump 8 are connected; Two of two parallel interfaces of the import of water circulating pump are connected with additional water inlet pipe, at additional water inlet pipe entering water electromagnetic valve DF and water inlet check valve Ds1 are installed; The main of interior recirculated water and go out also to be connected with standby manual outlet pipe between the hot-water supply main is equipped with a water flow manual modulation valve TF2 at standby manual outlet pipeline; Constitute the hot water heat-exchange system of circulation in the parallel hot water thus; Described constant temperature water flow control valve ZFa, ZFb are two condensing pressure Water flow adjusting valves, the bellows chamber of two condensing pressure Water flow adjusting valves has tube connector to connect with the compressor exhaust pipe of a system and b system respectively, represent with the multiple spot line among the figure, corresponding relation according to condensation of refrigerant pressure and saturation temperature, selecting the pressure corresponding with setting leaving water temperature is controlled condition, reaches the purpose of constant temperature water outlet; For example, freon R22 refrigerant saturation pressure (gauge pressure) 20kg/cm
2, about 50 ℃ of corresponding saturation temperature, suitable substantially with the hot water heat exchanger leaving water temperature, so alternative constant temperature water flow control valve has highly sensitive advantage; The auxiliary manual modulation valve of water flow just uses when the condensing pressure Water flow adjusting valve is out of order, and closes usually, and defrosting is closed season especially need not;
The parallel defrost air source heat pump water heater of helping each other of embodiment 1, be to adopt the defrosting of successively helping each other of 2 refrigerant circuit systems, as long as have a refrigerant circuit systems to send the defrosting signal in the unit, for example the evaporating pressure of a system descends suddenly fast, and evaporating temperature is lower than the environment temperature difference and surpasses setting etc., send the defrosting signal earlier, or arrive the defrosting cycle designated time, for example the frosting phase began back 45 minutes, source pump just enters defrosting mode, by agreement starting send earlier the system of defrosting signal or agreement earlier the system of defrosting enter defrost cycle, for example a system is first defrost system, the a system just switches to defrost cycle, fan 6a stops, defrost valve SFa opens, the cold-producing medium of heat enters wind regime evaporimeter 5a through the defrosting bypass, emit sensible heat defrost, the low temperature refrigerant gas is through gas-liquid separator 7a, sucked by compressor 1 and compress, and deliver in the refrigerant passage of hot water heat exchanger 2a, absorb the heat of its water side path hot water, enter wind regime evaporimeter 5a through the defrosting bypass again, the circulation defrosting; Because circulation in the water passage of two hot water heat exchanger 2a of the hot water heat-exchange system of circulation and 2b in the parallel hot water, the b system is still heating the water circulation, its liberated heat that condenses in hot water heat exchanger 2b is by the hot water inner loop mode, in the main of the interior recirculated water of the outlet of recirculated water check valve Dsb and recirculated water check valve Dsa, mix with low temperature water outlet from hot water heat exchanger 2a, again through circulating water flow adjustable valve TF1 and water circulating pump 8, provide temperature higher warm water to the hot water heat exchanger 2a of a system, be used for defrosting; Because the condensing pressure of a system is lower than the pressure of setting leaving water temperature during defrosting, the condensing pressure Water flow adjusting valve of a system can be closed automatically, and the condensing pressure of b system still can reach the pressure of setting leaving water temperature, so the condensing pressure Water flow adjusting valve of b system still can be opened, still have hot water output during defrosting; When a system sends the defrosting end signal, when for example the wind regime evaporator outlet temperature arrived more than 10 ℃ or 10 ℃, a system defrost cycle finished, and the defrost valve SFa of a system closes, and fan 6a leaves, and recovers normal circulation; Simultaneously, the b system enters defrost cycle, and the defrost valve SFb of b system opens, and fan 6b stops, and defrosting finishes up to the b system, and complete machine returns to and heats the circulation of hydro-thermal pump;
The parallel defrost air source heat pump water heater of helping each other of embodiment 1, its signal system mainly all disposes wind regime evaporator outlet temperature probe T2a and T2b two refrigeration systems, condensation of refrigerant pressure, evaporating pressure probe P1a and P1b, P2a and P2b, hot water effluent's temperature T 1, environment temperature probe etc.; After the signal acquisition process, according to setting program, control compressor, water circulating pump, fan, magnetic valve etc. are opened or are stopped, and heat water or defrosting by control panel;
The hot water heat-exchange system of circulation in the parallel hot water that embodiment 1 adopts, not only has the defrost function of helping each other, circulation also has the dual important function that improves Teat pump boiler efficient and improve its power output in its hot water, because the directly-heated type Teat pump boiler is when inflow temperature is very low, water flow velocity by hot water heat exchanger is extremely low, the average water temperature of hot water heat exchanger is low, system high pressure is low, so overall efficiency is low, it is low to exert oneself, and adopts circulation in the hot water, can improve the water flow velocity of hot water heat exchanger greatly, and keep system high pressure, reach the dual purpose of raising the efficiency and improving power output; Moreover, the air source hot pump water heater of the parallel defrosting of helping each other of the present invention, can be when the separate unit system works alone, or during the several system associated working, or water circulating pump work is not when working, or defrosting and when not defrosting, and can both guarantee that constant temperature goes out hot water, and system can both be in the best and exerts oneself the peak efficiency duty.
Structural relation and the operation principle of embodiment 2 are illustrated by Fig. 2.
As shown in Figure 2, the embodiment of the invention 2 a kind of adopts the parallel defrost air source heat pump water heater of helping each other of reverse circulation defrosting, includes two refrigerant circuit systems independently separately, a system and b system, and the accessory of two systems all uses footnote a and b to represent; The hot water heat-exchange system of an interior circulation of parallel hot water, unified signals collecting and circuit control system; Be example with a system, formation and the connected mode of described refrigerant circuit systems be described: also include cross valve 4a; Note, the individual interface of cross valve main valve body one side be cross valve first interface 1., three interfaces of the opposite side of cross valve main valve body, when fixing on the cross valve coil approximately and not having electricity with first interface in the interface that is communicated be cross valve second interface 2., when the cross valve coil has electricity with first interface in the interface that is communicated be cross valve the 3rd interface 3., interface placed in the middle be cross valve the 4th interface 4., namely be when the cross valve coil has electricity with in the 3rd interface, not to be communicated with, again when the cross valve coil has electricity with second interface in the interface that is communicated with; Cross valve first interface is generally as common inlet, and cross valve the 4th interface is generally as public outlet; Its connected mode is: 1. be connected with cross valve 4a first interface by compressor 1a gas outlet; 2. cross valve second interface is connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger 2a, series connection reservoir 3a, filter Ga, flow controller Ja in regular turn, the inlet of wind regime evaporimeter 5a; 3. the gas outlet of wind regime evaporimeter 5a is connected with cross valve the 3rd interface; 4. cross valve the 4th interface is connected with the air inlet of gas-liquid separator 7a; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; The loop that is linked to be fills cold-producing medium;
The parallel defrost air source heat pump water heater of helping each other of described embodiment 2, the formation of the hot water heat-exchange system of circulation and connected mode and embodiment's 1 shown in Figure 1 is identical in its parallel hot water;
A kind of parallel defrost air source heat pump water heater of helping each other that adopts the reverse circulation defrosting of embodiment 2, also be to adopt 2 the methods that refrigerant circuit systems successively defrost identical with embodiment 1, just the execution defrost cycle of embodiment 2 adopts contrary endless form, carrying out defrost cycle earlier with a system is example, and its defrost cycle cold-producing medium flow process is: compressor 1a → cross valve 4a (1. → 3.) → wind regime evaporimeter 5a → flow controller Ja → filter Ga → reservoir 3a → hot water heat exchanger 2a → cross valve 4a (2. → 4.) → gas-liquid separator 7a → compressor 1a; When a system began to defrost, fan 6a stopped, and cross valve 4a coil becomes electricity, cross valve 4a switched path; The b system continues to heat water running; When a system sends the defrosting end signal, when for example the wind regime evaporator outlet temperature arrived more than 10 ℃ or 10 ℃, cross valve 4a coil reverts to did not have electricity, and fan 6a leaves; Simultaneously, the b system enters defrost cycle, and cross valve 4b coil becomes electricity, and fan 6b stops, b system refrigerant reverse cycle defrosting, and defrosting finishes up to the b system, and complete machine returns to and heats the circulation of hydro-thermal pump;
A kind of parallel defrost air source heat pump water heater of helping each other that adopts the reverse circulation defrosting of embodiment 2 has and will transform the function of using into handpiece Water Chilling Units summer into; Be that handpiece Water Chilling Units uses if transform in summer, unit will be arranged on the work of chilled water mode, the cross valve coil of a system and b system is switched on simultaneously, the cold-producing medium of two systems all be in the defrosting same stream to, the wind regime evaporimeter becomes condenser, hot water heat exchanger produces cold water, and water flow manual modulation valve TF2 all opens, and cold water is by standby manual outlet pipe output; When chilled water mode is worked, the signal conductively-closed of wind regime evaporator outlet temperature probe T2a and T2b, the signal of the leaving water temperature probe T1 of former hot water heat-exchange system becomes the detection signal of cold water leaving water temperature, is lower than 3 ℃ and will reports to the police or stoppage protection.
Help each other defrost air source heat pump water heater structural relation and operation principle of embodiment 3 parallel illustrated by Fig. 3.
Shown in Figure 3 is a kind of formation and fundamental diagram that adopts the bypass hot gas defrosting and have the parallel defrost air source heat pump water heater of helping each other of subcooler of embodiment 3, two independently refrigerant circuit systems a system and b systems are separately arranged, the hot water heat-exchange system of an interior circulation of parallel hot water, unified signals collecting and circuit control system;
The help each other difference of air source hot pump water heater of defrost air source heat pump water heater and the parallel defrosting of helping each other shown in Figure 1 of embodiment 3 shown in Figure 3 parallel, only be to have added subcooler 9a and 9b respectively between the outlet of the reservoir of two refrigerant circuit systems and flow controller import, filter can be placed on before or after the subcooler; The water route import and export parallel connection of two subcoolers is inserted between the import of water inlet check valve outlet and water circulating pump of supplementing water water inlet pipe of hot water heat-exchange system, constitutes the hot water heat-exchange system that circulates in the parallel hot water that has subcooler; All the other structures all embodiment with shown in Figure 1 are identical.
The subcooler that increases of embodiment 3, the effect that good increase heating capacity is arranged in the winter time and raise the efficiency.By with the control experiment of common 10PH directly-heated type air source hot pump water heater, 2 ℃ of frosting phase operations the easiest of temperature in the winter time, the Teat pump boiler of embodiments of the invention 3 is exerted oneself and is 150% of common heat pump to the hot water that faces before the defrosting, COP improves 37.5%, and embodiments of the invention 3 are except hot water output is still arranged frost season.
Help each other defrost air source heat pump water heater structural relation and operation principle of embodiment 4 parallel illustrated by Fig. 4.
Shown in Figure 4 is a kind of formation and fundamental diagram that adopts the reverse circulation defrosting and have the parallel defrost air source heat pump water heater of helping each other of subcooler of embodiment 4, two independently refrigerant circuit systems a system and b systems are separately arranged, the hot water heat-exchange system of an interior circulation of parallel hot water, unified signals collecting and circuit control system;
The help each other difference of defrost air source heat pump water heater and the parallel defrost air source heat pump water heater of helping each other of employing reverse circulation defrosting shown in Figure 2 of embodiment 4 shown in Figure 4 parallel, only be to have added subcooler 9a and 9b respectively between the outlet of the reservoir of two refrigerant circuit systems and flow controller import, filter can be placed on before or after the subcooler; The water route import and export parallel connection of two subcoolers is inserted between the import of water inlet check valve outlet and water circulating pump of supplementing water water inlet pipe of hot water heat-exchange system, constitutes the hot water heat-exchange system that circulates in the parallel hot water that has subcooler; All the other structures all embodiment 2 with shown in Figure 2 are identical.Subcooler effect when inflow temperature is more low is more obvious, so have tangible synergistic function winter; If summer Teat pump boiler transform handpiece Water Chilling Units into and use, subcooler is equivalent to increase evaporator area, also can increase cool water quantity.
Help each other defrost air source heat pump water heater structural relation and operation principle of embodiment 5 parallel illustrated by Fig. 5.
Shown in Figure 5 is embodiment 5 a kind of adopts the reverse circulation defrosting and increased water source heat exchangers in parallel formula help each other formation and the fundamental diagram of defrost air source heat exchanger, two independently refrigerant circuit systems a system and b systems are separately arranged, the hot water heat-exchange system of an interior circulation of parallel hot water, unified signals collecting and circuit control system;
The help each other difference of defrost air source heat pump water heater and the parallel defrost air source heat pump water heater of helping each other of employing reverse circulation defrosting shown in Figure 2 of embodiment 5 shown in Figure 5 parallel, only being all to increase between the inlet of the flow controller of each refrigerant circuit systems and wind regime evaporimeter has a water source heat exchanger 11a and 11b; The water route parallel connection of the water source heat exchanger of each refrigerant circuit systems, its import in parallel is connected with the water source water inlet pipe, and water source water intaking valve F1 is installed on the water inlet pipe; Its delivery port in parallel is connected with the water source outlet pipe, water one-way valve Ds2 is installed out on the water source outlet pipe, the bottom of water source heat exchanger be provided with discharge pipe line, discharging valve F2 is arranged on the discharge pipe line, drainpipe is installed in the water inlet pipe bypass of heat exchanger below, water source, the top of water source heat exchanger is equipped with vent valve F3, and vent valve F3 can be installed in the bypass before the check valve inlet of water source outlet pipe of water source heat exchanger top;
A kind of employing reverse circulation defrosting shown in Figure 5 has also increased the water source heat exchangers in parallel formula defrost air source heat pump water heater of helping each other, and have heat pump and heat water, chilled water, three kinds of functions of the hot water that freezes simultaneously can be organized six kinds of mode operations; There are three kinds of mode methods of operation to heat water, be example with a system, its cold-producing medium circulation process order all is, compressor 1a, cross valve 4a (1. → 2.), hot water heat exchanger 2a, reservoir 3a, filter Ga, flow controller Ja, water source heat exchanger 11a, wind regime evaporimeter 5a, cross valve 4 (3. → 4.), gas-liquid separator 7a, compressor 1a; The first kind of single air of mode source heat absorption heats the water running mode, fan 6a and the 6b of compressor 1a and 1b, water circulating pump 8, wind regime evaporimeter start, and the coil of cross valve 4a and 4b does not have electricity, and entering water electromagnetic valve DF opens, the water intaking valve F1 of water source heat exchanger closes, water source heat exchanger emptying water; Second kind of single water source heat absorption heats the water mode method of operation, and compressor, water circulating pump start, and the cross valve coil does not have, the fan of wind regime evaporimeter stops, and entering water electromagnetic valve DF opens, and the water intaking valve F1 of water source heat exchanger opens, discharging valve F2 and vent valve F3 close, water source heat exchanger water flowing; The third heats the water mode method of operation from air source and water source heat absorption simultaneously, and the fan of compressor, water circulating pump, wind regime evaporimeter starts, and the cross valve coil does not have electricity, and entering water electromagnetic valve DF opens, water source heat exchanger water flowing; The 4th kind of defrosting mode method of operation, the system that carries out defrosting carries out: compressor, water circulating pump start, and the cross valve coil has electricity, and the fan of wind regime evaporimeter stops, and entering water electromagnetic valve DF opens, water source heat exchanger water flowing; Do not carry out the system of defrosting, still carry out first kind or the third mode method of operation; The 5th kind of chilled water mode method of operation compressor, water circulating pump start, the cross valve coil has, the fan of wind regime evaporimeter starts, entering water electromagnetic valve DF opens, water flow manual modulation valve TF2 all opens, cold water is by standby manual outlet pipe output, and water source heat exchanger water flowing can obtain a small amount of hot water simultaneously; The 6th kind of chilled water be the double water mode method of operation that heats again, compressor, water circulating pump start, the cross valve coil has, the fan of wind regime evaporimeter stops, entering water electromagnetic valve DF opens, and water flow manual modulation valve TF2 all opens, and cold water is by standby manual outlet pipe output, water source heat exchanger water flowing can obtain a large amount of hot water and a large amount of cold water simultaneously; The 4th kind to the 6th kind mode method of operation, cold-producing medium is all done reverse circulation, be example with a system, its cold-producing medium circulation process order all is, compressor 1a, cross valve 4a (1. → 3.), wind regime evaporimeter 5a, water source heat exchanger 11a, flow controller Ja, filter Ga, reservoir 3a, hot water heat exchanger 2a, cross valve 4 (2. → 4.), gas-liquid separator 7a, compressor 1a.
The main cross-sectional schematic that Fig. 6 (a) arranges for a kind of rectangle unit space of the parallel defrost air source heat pump water heater of helping each other, Fig. 6 (b) is its vertical view schematic diagram, air channel dividing plate 10, two Room about casing is divided into, other parts of a system and b system, the left surface of casing facade and the left back side are the wind regime evaporator coil fin 5a of a system, the right flank of casing facade and the right back side are the wind regime evaporator coil fin 5b of b system, the casing front is closure panel and instrument face plate, the left side of box top and right-hand part are equipped with fan 6a and the 6b of a system and b system respectively, other parts of a system and b system, as compressor etc., all be placed on respectively about casing on the two indoor end framed bents on 12.
Fig. 7 is the stereoscopic schematic diagram of a kind of V-type unit of the parallel defrost air source heat pump water heater of helping each other, the parallel defrost air source heat pump water heater of helping each other of above-mentioned 5 embodiment all can be as shown in Figure 7, the coil pipe finned heat exchanger 5a of the wind regime evaporimeter of two defrosting groups and 5b are arranged respectively symmetrically on the V-type groove face of air channel division board 10 both sides of unit top, other parts are placed on the end framed bent of V-type groove below X, the fan 6a of two systems and 6b are placed on left side and the right-hand part of the box top of air channel division board 10 both sides.
Claims (9)
1. the air source hot pump water heater of the parallel defrosting of helping each other includes refrigerant circuit systems, hot water heat-exchange system, signals collecting and circuit control system; Described refrigerant circuit systems includes compressor, hot water heat exchanger, filter, reservoir, flow controller, wind regime evaporimeter, gas-liquid separator; The wind regime evaporimeter is furnished with fan;
It is characterized in that: the described parallel defrost air source heat pump water heater of helping each other, have two refrigerant circuit systems independently separately at least, the water route inlet parallel of the hot water heat exchanger of each refrigerant circuit systems condenser is connected with the water inlet main of hot water heat exchanger, the water route outlet of each hot water heat exchanger divides two-way to be connected with the water inlet of constant temperature water flow control valve and the import of interior recirculated water check valve respectively, the delivery port of each constant temperature water flow control valve in parallel with go out hot-water supply main and be connected, outlet of recirculated water check valve is in parallel in each is connected with the main of interior recirculated water, the circulating water flow adjustable valve is housed on the main of interior recirculated water, one of two parallel interfaces of the water side of the main of interior recirculated water and the water inlet of water circulating pump are connected, and the water circulating pump delivery port is connected with the water inlet main of hot water heat exchanger; Two of two parallel interfaces of water circulating pump import are connected with additional water inlet pipe, at additional water inlet pipe entering water electromagnetic valve and water inlet check valve are installed; The main of interior recirculated water and go out also to be connected with standby manual outlet pipe between the hot-water supply main is equipped with a water flow manual modulation valve at standby manual outlet pipeline; Constitute the hot water heat-exchange system of circulation in the parallel hot water thus; Each independent cooling agent circuit system of the parallel defrost air source heat pump water heater of helping each other divides two or more defrosting groups successively to defrost, the air inlet duct of the wind regime evaporimeter of the refrigerant circuit systems of different defrosting groups is isolated with dividing plate, and the number of the refrigerant circuit systems of defrosting group simultaneously must not surpass half of refrigerant circuit systems sum of unit; The defrosting order of different defrosting groups is undertaken by the setting order or is sorted by the priority of sending the defrosting signal; When source pump obtains to require the signal of defrosting, refrigerant circuit systems by a certain defrosting group of agreement is carried out defrost cycle earlier, other defrosting group continues to heat the water circulation, Chu Shuan system withdraws from defrost cycle in the ban, and after recovering normally to heat the water circulation, other system that waits for the defrosting group enters defrost cycle more in regular turn; In system's defrost process of certain defrosting group, the hot water that other system produces circulates in the hot water by the hot water heat-exchange system, constantly carries the heat of defrosting to the system that is defrosting, and defrosting fast thoroughly; Finish when each system of complete machine defrosts, the complete machine defrost process finishes, and recovers normally to heat the water circulation; In the complete machine defrost process, the constant temperature water flow control valve of each refrigerant circuit systems correspondence is low or high according to hot water heat exchanger leaving water temperature separately automatically, automatically close or open, whole system defrosts remaining heat also can be by the output of constant temperature water flow control valve; The defrost cycle of refrigerant circuit systems according to the constituted mode of refrigerant circuit systems, or adopts the bypass hot gas Defrost mode of helping each other, or adopts the reverse circulation Defrost mode of helping each other; The bypass hot gas Defrost mode of helping each other, in refrigerant circuit systems, increase the bypass hot gas line is arranged, described bypass hot gas line is to be connected between the inlet of the refrigerant outlet of hot water heat exchanger and wind regime evaporimeter, at the bypass hot gas line defrost valve is installed; When defrost cycle, open defrost valve, cold-producing medium absorbs the heat removal frost that other system provides from hot water heat exchanger; The reverse circulation Defrost mode of helping each other, increase cross valve between exhaust outlet of compressor that need be in the refrigerant circuit system and the refrigerant inlet of hot water heat exchanger, during the cold-producing medium reverse circulation, the cross valve coil does not become electricity is arranged from there being electricity, switches the cross valve path direction, hot water heat exchanger in defrost cycle as evaporimeter, cold-producing medium absorbs the heat of vaporization that other system provides therein, compressed machine compression enters the wind regime evaporimeter, emits heat of condensation defrosting.
2. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: be a kind of parallel defrost air source heat pump water heater of helping each other that adopts the bypass hot gas defrosting, described refrigerant circuit systems also includes the bypass hot gas line of defrost valve and defrosting; Its connected mode is by refrigerant passage, reservoir, filter, flow controller, wind regime evaporimeter, gas-liquid separator, the compressor series connection in regular turn of compressor, hot water heat exchanger, to constitute the refrigerant loop that heats the water circulation; Between the inlet of the refrigerant outlet of the hot water heat exchanger of refrigerant loop and wind regime evaporimeter, also be connected with the bypass hot gas line of defrosting, at the bypass hot gas line of defrosting defrost valve be installed, fill cold-producing medium in the loop that is linked to be; When system carries out defrost cycle, defrost valve is opened, and cold-producing medium hot gas directly enters wind regime evaporimeter heat release defrost by the bypass hot gas line of hot water heat exchanger by defrosting, and low-temperature refrigerant gas is drawn back by compressor, the hot water heat exchanger heat absorption is sent in recompression, the circulation defrosting; Except frost season, the fan of wind regime evaporimeter closes.
3. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: be a kind of parallel defrost air source heat pump water heater of helping each other that adopts the reverse circulation defrosting, described refrigerant circuit systems also includes a cross valve, its connected mode is: by compressor outlet and cross valve first interface, namely the cross valve air inlet connects; With the interior cross valve interface that is communicated with of air inlet, be not designated as cross valve second interface when coil of cross valve has electricity, be connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger, the inlet of the reservoir of connecting in regular turn, filter, flow controller, wind regime evaporimeter; The gas outlet of wind regime evaporimeter and cross valve the 3rd interface are connected with the cross valve interface of connection in the air inlet when namely the coil of cross valve has electricity; Cross valve the 4th interface, namely three interfaces, one row public gas outlet placed in the middle is connected with the air inlet of gas-liquid separator; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; Fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, the cross valve coil had electricity, the cross valve commutation, and the cold-producing medium reverse circulation, fan closes.
4. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: be a kind of parallel defrost air source heat pump water heater of helping each other that adopts the bypass hot gas defrosting and have subcooler, described refrigerant circuit systems also includes the bypass hot gas line of subcooler, defrost valve and defrosting; Its connected mode is by refrigerant passage, reservoir, filter, subcooler, flow controller, wind regime evaporimeter, gas-liquid separator, the compressor series connection in regular turn of compressor, hot water heat exchanger, to constitute the refrigerant loop that heats the water circulation; Between the inlet of the refrigerant outlet of the hot water heat exchanger of refrigerant loop and wind regime evaporimeter, also be connected with the bypass hot gas line of defrosting, at the bypass hot gas line of defrosting defrost valve be installed, fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, defrost valve was opened, and cold-producing medium directly enters the wind regime evaporimeter by the bypass hot gas line of hot water heat exchanger by defrosting, and fan closes; After the water route parallel connection of the subcooler of each refrigerant circuit systems, between the import that is inserted in the water circulating pump of the hot water heat-exchange system of circulation in the described parallel hot water and the water inlet check valve outlet of supplementing water water inlet pipe, constitute the hot water heat-exchange system that circulates in the parallel hot water that has subcooler.
5. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: be a kind of parallel defrost air source heat pump water heater of helping each other that adopts the reverse circulation defrosting and have subcooler, described refrigerant circuit systems also includes subcooler and cross valve, its connected mode is: by compressor outlet and cross valve first interface, namely the cross valve air inlet connects; With the interior cross valve interface that is communicated with of air inlet, be not designated as cross valve second interface when coil of cross valve has electricity, be connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger, the inlet of the reservoir of connecting in regular turn, subcooler, filter, flow controller, wind regime evaporimeter; At gas outlet and cross valve the 3rd interface of wind regime evaporimeter, be connected with the cross valve interface of connection in the air inlet when namely the coil of cross valve has electricity; Cross valve the 4th interface, namely three interfaces, one row public gas outlet placed in the middle is connected with the air inlet of gas-liquid separator; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; Fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, the cross valve coil had electricity, the cross valve commutation, and the cold-producing medium reverse circulation, fan closes; After the water route parallel connection of the subcooler of each refrigerant circuit systems, between the import that is inserted in the water circulating pump of the hot water heat-exchange system of circulation in the described parallel hot water and the water inlet check valve outlet of supplementing water water inlet pipe, constitute the hot water heat-exchange system that circulates in the parallel hot water that has subcooler.
6. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: be the defrosting of a kind of employing reverse circulation and increased the water source heat exchangers in parallel formula defrost air source heat pump water heater of helping each other, described refrigerant circuit systems also includes water source heat exchanger and cross valve, its connected mode is: by compressor outlet and cross valve first interface, namely the cross valve air inlet connects; With the interior cross valve interface that is communicated with of air inlet, be not designated as cross valve second interface when coil of cross valve has electricity, be connected with the refrigerant inlet of hot water heat exchanger; From the refrigerant outlet of hot water heat exchanger, the inlet of the reservoir of connecting in regular turn, filter, flow controller, water source heat exchanger, wind regime evaporimeter; At gas outlet and cross valve the 3rd interface of wind regime evaporimeter, be connected with the cross valve interface of connection in the air inlet when namely the coil of cross valve has electricity; Cross valve the 4th interface, namely three interfaces, one row public gas outlet placed in the middle is connected with the air inlet of gas-liquid separator; The gas outlet of gas-liquid separator is connected with the air inlet of compressor; Fill cold-producing medium in the loop that is linked to be; When system carried out defrost cycle, the cross valve coil had electricity, the cross valve commutation, and the cold-producing medium reverse circulation, fan closes; The water route parallel connection of the water source heat exchanger of each refrigerant circuit systems, its import in parallel is connected with the water source water inlet pipe, and the water source water intaking valve is installed on the water inlet pipe, and its delivery port in parallel is connected with the water source outlet pipe, and outlet pipe is equipped with out water one-way valve at the water source; The bottom of water source heat exchanger is provided with discharge pipe line, and discharging valve is arranged on the discharge pipe line, is provided with vent valve at the top of water source heat exchanger;
Described a kind of employing reverse circulation defrosting has also increased the water source heat exchangers in parallel formula defrost air source heat pump water heater of helping each other, and has the water of heating, chilled water, and three kinds of functions of chilled water and hot water can be organized six kinds of mode operations simultaneously; It all is to heat water that three kinds of mode methods of operation are arranged, and its cold-producing medium circulation process order all is compressor, cross valve, hot water heat exchanger, reservoir, filter, flow controller, water source heat exchanger, wind regime evaporimeter, cross valve, gas-liquid separator, compressor; First kind of mode: the heat absorption of single air source heats the water running mode, and the fan of compressor, water circulating pump, wind regime evaporimeter starts, and the cross valve coil does not have electricity, water source heat exchanger not water flowing of water route, and emptied of water; Second kind of mode: the heat absorption of single water source heats the water running mode, and compressor, water circulating pump start, and the cross valve coil does not have electricity, and the fan of wind regime evaporimeter stops, water source heat exchanger water route water flowing; The third mode: heat the water running mode from air source and water source heat absorption simultaneously, the fan of compressor, water circulating pump, wind regime evaporimeter starts, and the cross valve coil does not have electricity, water source heat exchanger water route water flowing; The 4th kind of mode: carry out the Defrost operation mode, compressor, the water circulating pump of the system that defrosts start, and the cross valve coil has electricity, and the fan of wind regime evaporimeter stops, water source heat exchanger water route water flowing; The system that does not defrost still carries out first kind or the third mode method of operation; The 5th kind of mode: the cold water method of operation of idle call processed, compressor, cross valve coil have, the fan of wind regime evaporimeter starts, and hot water heat exchanger changes the cold water of output idle call, and the water intaking valve of hot water heat-exchange system is opened, water circulating pump starts, the circulating water flow adjustable valve is closed, and the water flow manual modulation valve on the standby manual outlet pipeline is all opened, and water source heat exchanger water intaking valve is opened, water source heat exchanger water route water flowing can obtain a small amount of hot water simultaneously; The 6th kind of mode: the double water mode method of operation that heats of the cold water of idle call processed, compressor, water circulating pump starts, the cross valve coil has, the fan of wind regime evaporimeter stops, use the water source heat exchanger instead and make condenser, the whole heats of condensation of absorption refrigeration agent heat water, water source heat exchanger water intaking valve is opened, heat exchanger water route, water source output hot water, hot water heat exchanger changes the cold water of output idle call, and the water intaking valve of hot water heat-exchange system is opened, water circulating pump starts, the circulating water flow adjustable valve is closed, and the water flow manual modulation valve on the standby manual outlet pipeline is all opened, former hot water heat-exchange system output air conditioner cold water.
7. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: the constant temperature water flow control valve of described hot water heat-exchange system is the condensing pressure Water flow adjusting valve, or the constant temperature on-off valve of temperature memory alloy temperature-sensing element; When adopting the condensing pressure Water flow adjusting valve, the bellows pressure chamber of each condensing pressure Water flow adjusting valve have tube connector respectively with the compressor exhaust pipe of corresponding control flow system connect, according to the corresponding relation of condensation of refrigerant pressure and saturation temperature, selecting the pressure corresponding with setting leaving water temperature is controlled condition.
8. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: the flow controller of described refrigerant circuit systems is capillary, or electric expansion valve, or heating power expansion valve.
9. the parallel defrost air source heat pump water heater of helping each other as claimed in claim 1, it is characterized in that: the hot water heat exchanger of described hot water heat-exchange system is plate type heat exchanger, or efficient jar pipe heat exchanger, or the coaxial sleeve tube heat exchanger.
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| CN105222337A (en) * | 2015-11-24 | 2016-01-06 | 浙江万宝新能源科技有限公司 | Parallel mutual defrosting air source heat pump water heater |
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