CN203454463U - Dual compression heat pump system producing high-temperature hot water - Google Patents
Dual compression heat pump system producing high-temperature hot water Download PDFInfo
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- CN203454463U CN203454463U CN201320313084.5U CN201320313084U CN203454463U CN 203454463 U CN203454463 U CN 203454463U CN 201320313084 U CN201320313084 U CN 201320313084U CN 203454463 U CN203454463 U CN 203454463U
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Abstract
The utility model discloses a dual compression heat pump system producing high-temperature hot water. According to the utility model, heat exchange between different refrigerants of two heat pump systems is realized through water serving as an intermediate medium and a compressor does not need to be driven in an overload state. Hot water at high temperatures that are higher than 80 DEG C can be produced with little heat. The heat pump system also has function of cooling a room or producing hot water at moderate temperatures. Heat exchange efficiency is improved distinctively. And the functions of producing the hot water at the moderate temperatures and cooling are also implemented under a premise of saving electricity and saving energy. Besides, the heat pump system employs the standard common refrigerants, so that timeliness and standardization can be realized in product after-sales repair.
Description
Technical field
The utility model relates to a kind of novel heat pump, a kind of heat pump that can produce 80 degree high-temperature-hot-waters particularly, and warm water or cold water during this system also can produce, or produce cold water and middle warm water simultaneously.
Background technology
Heat pump has refrigeration and heat-production functions concurrently simultaneously, by compressor, and condenser, evaporimeter, the unit that expansion valve provides, is commutated and in summer, is obtained refrigerating function by cross valve, obtains heat-production functions winter.
Heat pump in the past can only obtain the following hot water of 50 degree (being generally 45 degree) under worst cold case while adopting the refrigerant of standard, if in order to obtain the above hot water of 50 degree, must long-time overload operation compressor, just can obtain the above hot water of 50 degree, to make like this compressor life-span seriously reduce, and cause source pump normally not use.
In order to improve the problems referred to above, there are two kinds of solutions obtaining aspect high-temperature-hot-water at present, the one, adopt increasing gas blowout enthalpy compressor newly developed recently, and additional economizer improves heat pump, obtain high-temperature-hot-water; The 2nd, adopt mixing refrigerant to replace general standard refrigerant to obtain high-temperature-hot-water.
But above two kinds of existing technology of obtaining high-temperature-hot-water have following defect:
Although the first adopts the heat pump of air injection enthalpy-increasing Compressor Technology to promote the temperature of obtaining hot water, but till only reaching 65 degree, this is self limitation due to compressor, and current Compressor Technology also cannot accomplish that single compressor obtains the hot water that temperature reaches 80 degree under the following temperature nature of 0 degree operating mode;
The second adopts the mode of mixing refrigerant to obtain the heat pump of high-temperature-hot-water, although there is test can obtain the above high-temperature-hot-water of 80 degree, because it adopts mixing refrigerant, has uncertainty.This be because, generally regular refrigerant manufacturer does not produce, does not promote mixing refrigerant, cannot be to the assurance of the long-term product reliability of user and stability because mix refrigerant, mixing refrigerant is on the market all generally that other source pump manufacturer joins alone and gets and use voluntarily, the mixing cold medium heat pump machine set product that it dispatches from the factory cannot be accomplished the reliable of product, stable, when the homogeneity in life-span, go wrong unknown.Once and source pump damages, need to annotate in refrigerant situation, because it mixes refrigerant, join and get voluntarily, so can't buy on the market, in product after-sales service, cannot accomplish promptness and standardization.
Utility model content
The utility model provides a kind of binary compression heat pump system that can produce high-temperature-hot-water, this system adopts traditional refrigerant, can produce 80 degree high-temperature-hot-waters, and warm water or cold water in can also producing, or produce cold water and middle warm water simultaneously, efficiently solve the above-mentioned defect existing in prior art.
The technical solution of the utility model is as follows:
A kind of binary compression heat pump system that can produce high-temperature-hot-water, the high temperature side heat pump that comprises low temperature side heat pump and carry out with it heat exchange, and the water circulation and the cold water circulating system that connect described low temperature side heat pump and described high temperature side heat pump, wherein
Described low temperature side heat pump comprises and compresses the first compressor of the first refrigerant, the first expansion valve that the first refrigerant is carried out the first heat exchanger of condensation or evaporation and the second heat exchanger, the first refrigerant of the first heat exchanger or the second heat exchanger condensation is reduced pressure, and the cross valve of convertible the first refrigerant commutation, described the first compressor, the first heat exchanger, the second heat exchanger, the first expansion valve and cross valve and the pipeline between them provide the peripheral passage of the first refrigerant;
Described high temperature side heat pump comprises the second compressor that compresses the second refrigerant, evaporate the 3rd heat exchanger that the second refrigerant is used, the 4th heat exchanger that condensation the second refrigerant is used, the second expansion valve that the second refrigerant of described the 4th heat exchanger condensation is reduced pressure, and first magnetic valve and the second magnetic valve, wherein said the 3rd heat exchanger, the second compressor, the 4th heat exchanger, the first magnetic valve, the second expansion valve provide the first peripheral passage of described the second refrigerant;
Described water circulation and cold water circulating system comprise the first water pump, the the first water route switch being arranged in parallel with described the first water pump, connect described the first water pump and the first water route switch and the second water route switch being arranged in parallel and the 3rd water route switch, the 5th heat exchanger being connected with the second refrigerant pipeline of described high temperature side heat pump and the water lines of described water circulation and cold water circulating system respectively, be arranged on the 4th water route switch between the water route mouth of described the 5th heat exchanger and the water route mouth of described the 4th heat exchanger, be arranged on the 5th water route switch between the second heat exchanger and the 3rd heat exchanger, and the 6th water route switch and fan coil of series connection setting, wherein said the 6th water route switch and described fan coil and described the 5th water route switch in parallel arrange, described the second water route switch is connected with the water route mouth of described the 5th heat exchanger, described the 3rd water route switch is connected with the water route mouth of described the 4th heat exchanger, wherein,
Described the 3rd heat exchanger, the second compressor, the 4th heat exchanger, the second magnetic valve, the 5th heat exchanger, the second expansion valve provide the second peripheral passage of described the second refrigerant;
Move described low temperature side heat pump and high temperature side heat pump simultaneously and can produce high-temperature-hot-water, described in isolated operation, low temperature side heat pump or high temperature side heat pump can produce cold water, described in isolated operation low temperature side heat pump can produce in warm water, high temperature side heat pump can produce cold water and middle warm water simultaneously described in isolated operation.
In preferred embodiment of the present utility model, move described low temperature side heat pump and high temperature side heat pump, described the second heat exchanger, the first water pump, the second water route switch, the 5th heat exchanger, the 3rd heat exchanger, the 5th water route switch provide first water circulation path that can produce high-temperature-hot-water simultaneously;
Low temperature side heat pump described in isolated operation, the second water circulation path of warm water during described the second heat exchanger, the first water route switch, the 3rd water route switch, the 4th heat exchanger, the 4th water route switch, the 3rd heat exchanger, the 5th water route switch provide and can produce;
Low temperature side heat pump described in isolated operation, described the second heat exchanger, the first water pump, the second water route switch, the 5th heat exchanger, the 3rd heat exchanger, fan coil and the 6th water route switch provide the 3rd water circulation path that can produce cold water;
High temperature side heat pump described in isolated operation, described the second heat exchanger, the first water pump, the second water route switch, the 5th heat exchanger, the 3rd heat exchanger, fan coil and the 6th water route switch provide the 3rd water circulation path that can produce cold water, warm water's the 4th peripheral passage during described the 3rd heat exchanger, the second compressor, the 4th heat exchanger, the first magnetic valve, the second expansion valve provide and can produce simultaneously.
Preferably, described the 4th heat exchanger is provided with two water route mouths to form circulation waterway, between described two water route mouths, be provided with the 7th water route switch and the second water pump, described the 3rd water route switch is communicated to the pipeline between described the 7th water route switch and described the second water pump;
The circulation waterway of described the 4th heat exchanger, through a heat exchanger type hot water storage tank, passes to its heat in the water storing in described heat exchanger type hot water storage tank.The hot water herein the 4th heat exchanger being provided carries out heat exchange and accumulation of heat through heat exchanger type hot water storage tank, can make like this binary compression heat pump system of the present utility model only at night, move and large capacity storage high-temperature-hot-water, and do not need by day operating heat pump, only use and circulation heat exchanger formula hot water storage tank store the needs that hot water just can meet heating and use domestic hot-water by day.Because the electricity price at a lot of local nights is with respect to being daytime very cheap, hot water storage tank is enough large, is that daytime is operating heat pump not, can reach so energy-conservation economical effect at operating heat pump at night.Heat exchanger type hot water storage tank has solved water in binary compression heat pump system of the present utility model simultaneously may be with unclean material or impurity and be unsuitable for the problem directly drinking or use.
In a preferred embodiment of the present utility model, described the first heat exchanger is from air, to absorb or the finned heat exchanger of discharges heat.
In another preferred embodiment of the present utility model, described the first heat exchanger is for adopting source, ground, or the refrigerant type heat exchanger of the water at water source.
Preferably, for energy saving, described the first compressor is selected frequency-changeable compressor, according to design temperature operation low temperature side heat pump intermittently.
Compared with prior art, the beneficial effects of the utility model are as follows:
The one, binary compression heat pump system of the present utility model using the different refrigerants of two heat pumps by water as intermediate medium indirect heat exchange, needn't excess load drive compression machine, with thermal source seldom, just can produce the hot water of proper temperature, by the hot water through the first refrigerant heating by the high temperature second refrigerant heat exchange of discharging with the 3rd heat exchanger of high temperature side heat pump after, the method that improves the evaporation efficiency of the second refrigerant by heat exchange again in the 4th heat exchanger produces high-temperature-hot-water;
The 2nd, this heat pump of the present utility model also has the effect of warm water in room refrigeration and production concurrently, significantly improves heat exchanger effectiveness, possesses the function of simultaneously producing hot water and refrigeration under the prerequisite of power and energy saving;
The 3rd. binary compression heat pump system of the present utility model is used standard product accessory and conventional refrigerant, in product after-sales service, can accomplish promptness and standardization.
Certainly, implement arbitrary product of the present utility model and might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure chart of the binary compression heat pump system of the utility model embodiment 1;
Fig. 2 is the structure chart of the binary compression heat pump system of the utility model embodiment 2.
The specific embodiment
Binary compression heat pump system of the present utility model using the different refrigerants of two heat pumps by water as intermediate medium indirect heat exchange, needn't excess load drive compression machine, with thermal source seldom, just can produce the hot water of proper temperature, below in conjunction with specific embodiment, the utility model is further described.
Embodiment 1
The present embodiment provides a kind of binary compression heat pump system that can produce high-temperature-hot-water, the high temperature side heat pump (200) that comprises low temperature side heat pump (100) and carry out with it heat exchange, and water circulation (300) and cold water circulation (400) system of connecting low temperature side heat pump (100) and high temperature side heat pump (200), also comprise the water circulation system (500) that makes water, wherein
Low temperature side heat pump (100) comprises the first compressor (101) that compresses the first refrigerant, the first refrigerant is carried out to the first heat exchanger (102) and second heat exchanger (103) of condensation or evaporation, the first expansion valve (104) that the first refrigerant of the first heat exchanger (102) or the second heat exchanger (103) condensation is reduced pressure, and the cross valve (105) of convertible the first refrigerant commutation, the first compressor (101), the first heat exchanger (102), the second heat exchanger (103), the first expansion valve (104) and cross valve (105) and the pipeline between them provide the peripheral passage of the first refrigerant, conventionally, in this path, also include gas-liquid separator (106), the first device for drying and filtering (107) and reservoir (108), the position of above-mentioned each device and annexation are referring to Fig. 1, in low temperature side heat pump (100), according to cross valve (105), commutate, the first heat exchanger (102) and the second heat exchanger (103) can be respectively as condenser or evaporimeters, when the first heat exchanger (102) is during as condenser, the second heat exchanger (103) is as evaporimeter, and when the first heat exchanger (102) is during as evaporimeter, the second heat exchanger (103) is as condenser.Wherein, when the first heat exchanger (102) is during as evaporimeter, the refrigerant of low temperature side heat pump is with air-cooled type, water-cooled evaporation.In the present embodiment, the first heat exchanger (102) is from air, to absorb or the finned heat exchanger of discharges heat.
High temperature side heat pump (200) comprises the second compressor (201) that compresses the second refrigerant, evaporate the 3rd heat exchanger (202) that the second refrigerant is used, the 4th heat exchanger (203) that condensation the second refrigerant is used, the second expansion valve (204) that the second refrigerant of the 4th heat exchanger (203) condensation is reduced pressure, and first magnetic valve (206) and the second magnetic valve (207), conventionally also comprise the second drier (209), the 3rd heat exchanger (202) wherein, the second compressor (201), the 4th heat exchanger (203), the first magnetic valve (206), the second device for drying and filtering (209), the second expansion valve (204) provides the first peripheral passage of the second refrigerant, the 3rd heat exchanger (202), the second compressor (201), the 4th heat exchanger (203), the second magnetic valve (207), the 5th heat exchanger (302), the second device for drying and filtering (209), the second expansion valve (204) provides the second peripheral passage of the second refrigerant,
The first refrigerant of the second refrigerant of the 3rd heat exchanger (202) of high temperature side heat pump (200) and second heat exchanger (103) of low temperature side heat pump (100) carries out heat exchange by aqueous medium, be specially by water circulation (300) and cold water circulation (400) system, this system comprises the first water pump (301), the the first water route switch (303) being arranged in parallel with the first water pump (301), connect the first water pump (301) and the first water route switch (303) and the second water route switch (304) being arranged in parallel and the 3rd water route switch (306), the 5th heat exchanger (302) being connected with the second refrigerant pipeline of high temperature side heat pump (200) and the water lines of water circulation (300) and cold water circulation (400) system respectively, be arranged on the 4th water route switch (305) between the water route mouth of the 5th heat exchanger (302) and the water route mouth of the 4th heat exchanger (203), and be arranged on the 5th water route switch (404) between the second heat exchanger (103) and the 3rd heat exchanger (202), and the 6th water route switch (403) and the fan coil (402) of series connection setting, wherein the 6th water route switch (403) and fan coil (402) are arranged in parallel with the 5th water route switch (404), the second water route switch (304) is connected with the water route mouth of the 5th heat exchanger (302), the 3rd water route switch (306) is connected with the water route mouth of the 4th heat exchanger (203), and, because the 4th heat exchanger (203) is provided with two water route mouths to form circulation waterway, preferably between above-mentioned two water route mouths, be provided with the 7th water route switch (205) and the second water pump (208), the 3rd water route switch (306) is communicated to the pipeline between the 7th water route switch (205) and the second water pump (208), to form the pipeline of output hot water,
The circulation waterway of the 4th heat exchanger (203), through a heat exchanger type hot water storage tank (501) of water circulation system (500), passes to its heat in the water storing in heat exchanger type hot water storage tank (501).Water circulation system (500) also comprises the 3rd water pump (502), triple valve (503), the 8th water route switch (504), the 9th water route switch (505), moisturizing switch (506), and the annexation of above equipment is referring to Fig. 1, wherein,
The second heat exchanger (103), the first water pump (301), the second water route switch (304), the 5th heat exchanger (302), the 3rd heat exchanger (202), the 5th water route switch (404) provide first water circulation path (produce high-temperature-hot-water use, have detailed description below) that can produce high-temperature-hot-water;
The second water circulation path (warm water's use in generation, has detailed description below) of warm water during the second heat exchanger (103), the first water route switch (303), the 3rd water route switch (306), the 4th heat exchanger (203), the 4th water route switch (305), the 3rd heat exchanger (202), the 5th water route switch (404) provide and can produce;
The second heat exchanger (103), the first water pump (301), the second water route switch (304), the 5th heat exchanger (302), the 3rd heat exchanger (202), fan coil (402) and the 6th water route switch (403) provide the 3rd water circulation path (produce cold water use, have detailed description below) that can produce cold water;
Use while producing the function of cold water and hot water simultaneously, the 3rd heat exchanger (202), the second compressor (201), the 4th heat exchanger (203), the first magnetic valve (206), the high temperature side operation of heat pump that the second expansion valve (204) forms, by the 3rd heat exchanger (202) heat absorption, make the second heat exchanger (103), the first water pump (301), the second water route switch (304), the 5th heat exchanger (302), the 3rd heat exchanger (202), the 3rd water circulation path that fan coil (402) and the 6th water route switch (403) form provides cold water, by the 4th heat exchanger (203) heat release, make (500) water circulation system that middle warm water is provided.
Wherein, preferred heat exchanger formula hot water storage tank (501) has the large capacity water space that this binary compression heat pump system can only be moved at night.
The binary compression heat pump system of the present embodiment can reach following several function:
A) provide high-temperature-hot-water; B) provide middle warm water; C) provide cold water; D) provide middle warm water and cold water simultaneously.
Below the process that respectively the present embodiment is realized to above-mentioned functions is described:
A) provide high-temperature-hot-water
For the A function that high-temperature-hot-water is provided, be mainly in winter, to move this function.
At northern area, all need heating winter, but the air ambient temperature in northern winter is but very low, the heat pump of single compressor cannot meet heating under normal circumstances.And this embodiment of the present utility model can well address this problem.
Refer to Fig. 1, in the present embodiment, the principle and the process that produce high-temperature-hot-water are: first heat exchanger (102) of low temperature side heat pump (100) obtains heat from outside air environment, by low temperature side heat pump (100) circulation, in the second heat exchanger (103), can obtain the hot water of 20～25 degree.
Now water route switch (403) cuts out, and water route switch (404) is opened, and cold water circulation (400) can not be formed.
Now water pump (301) is opened, the 3rd water route switch (306) and the 4th water route switch (305) are closed, the first water route switch (303) also cuts out, and the second water route switch (304) is opened, and forms water circulation with the second heat exchanger (103) and the 3rd heat exchanger (202).By the first water pump (301) forced water circulation, the heat in the second heat exchanger (103) is delivered in the 3rd heat exchanger (202).
Because the heat pump using the present embodiment produces in the process of high-temperature-hot-water, the 3rd heat exchanger (202) of using as evaporimeter is in order to obtain high evaporating temperature, except obtain heat from the second heat exchanger (103), the 5th heat exchanger (302) is set between the 3rd heat exchanger (202) and the second heat exchanger (103), in the second refrigerant, obtains heat.
The 5th heat exchanger (302) has two loops, a water route for being connected with the 3rd heat exchanger (202) and the second heat exchanger (103), and another is the refrigerant loop being connected with the second refrigerant of high temperature side heat pump (200).Its operation principle is: the 5th heat exchanger (302) is by carrying out the second refrigerant and the water in water circulation (300) of the high temperature side heat pump (200) before expanding after condensation the expansion efficiency that heat exchange has improved second refrigerant of high temperature side heat pump (200), and improved the water temperature of the water in water circulation, make the second refrigerant of the high temperature side heat pump (200) in the 3rd heat exchanger (202) when evaporation, obtain higher evaporating temperature, again by after the air-breathing exhaust of the second compressor (201) of high temperature side heat pump (200), in the 4th heat exchanger (203) condensation process, obtain higher condensation temperature, at delivery port, obtain very high leaving water temperature thereupon.Therefore,, in producing the whole heat pump of high-temperature-hot-water, the 5th heat exchanger (302) plays the effect of economizer heat exchanger.
And now the magnetic valve (206) in high temperature side heat pump (200) cuts out, magnetic valve (207) is opened, and makes the second refrigerant by the 5th heat exchanger (302).
In this circulation, the heat of middle 20～25 degree water that produce of the second heat exchanger (103) and high temperature side heat pump (200) is delivered to water heat by the 5th heat exchanger (302) are passed to the second refrigerant of the middle evaporation of high temperature side heat pump (200) together by the 3rd heat exchanger (202), make it to obtain higher evaporating temperature, the second refrigerant passes through the air-breathing exhaust of the second compressor (201) after obtaining higher evaporating temperature, then flow to the 4th heat exchanger (203), obtain the second refrigerant that condensation temperature is very high, the second refrigerant in the 4th heat exchanger (203) carries out heat exchange by the 4th heat exchanger (203) and water heat transmission is fed water, the high-temperature-hot-water inflow heat exchanger formula hot water storage tank (501) obtaining, carry out heat exchange with domestic water.
After carrying out heat exchange and regulate water temperature by heat exchanger type hot water storage tank (501), provide heating hot water, and hot water for life be provided, its specifically supply water route and circulation referring to the water circulation system in Fig. 1 (500).
When moving at the same time high temperature side heat pump (200) and low temperature side heat pump (100) and obtaining high-temperature-hot-water function, if adopt enough large hot water storage tank, can also reach and only pass through operating heat pump system at night, adopt the cheapness electricity of electric paddy to produce hot water, reach economical object.Because the electricity at a lot of regional nights is with respect to being daytime very cheap, hot water storage tank is enough large, only at night, moves this binary compression heat pump system, and does not move by day; At night, move heat that this binary compression heat pump system produces and take water in carrier is stored in larger heat exchanger type hot water storage tank (501).Wait until that the electricity paddy period at night finishes rear heat pump out of service, and by day just comprising heat exchanger type hot water storage tank (501), the 3rd water pump (502), triple valve (503), water circulation system (500) operation of the 8th water route switch (504), the 9th water route switch (505).By water circulation system (500), the heat storing is released, daytime can heating and acquisition domestic water.Can reach economical effect like this.
B) provide middle warm water;
The utility model can also provide middle warm water.
In generation, only move low temperature side heat pump (100) during warm water, now the first heat exchanger (102) plays evaporimeter effect, and the second heat exchanger (103) plays condenser interaction energy and produces hot water.
For the B function that middle warm water is provided, be mainly to move this function at spring and autumn.
Because spring and autumn ambient air temperature is not very low, and the water temperature of required domestic water to require be not very high, and without heating, so only just can meet the demands with single compressor GENERAL TYPE heat pump.
Now only move low temperature side heat pump, by the first heat exchanger (102), in air, obtain heat, and in the second heat exchanger (103), heat is delivered to water, the middle warm water who obtains is transported in heat exchanger type hot water storage tank (501), then obtains domestic hot-water by operation water circulation system (500).
Now high temperature side heat pump (200) stops, in water circulation (300) and cold water circulation (400) system, the 6th water route switch (403) cuts out, the 5th water route switch (404) is opened, the first water pump (301) cuts out, the first water route switch (303) is opened, the second water route switch (304) cuts out, the 3rd water route switch (306) and the 4th water route switch (305) are opened, the 7th water route switch (205) cuts out, and the second water pump (208) is opened.
And in water circulation system (500), because do not need heating, so the 8th water route switch (504) cuts out, only have the 9th water route switch (505) to open.
C) provide cold water;
The present embodiment can also produce cold water.Now, the low temperature side heat pump (100) of the present embodiment or high temperature side heat pump (200) can produce cold water.
In the time that cold water need to be produced, only need move a heat pump in low temperature side heat pump (100) or high temperature side heat pump (200).
Closing low temperature side heat pump (100), while only moving high temperature side heat pump (200), the 3rd heat exchanger (202) plays evaporimeter effect, therefore can produce cold water, and now the first magnetic valve (206) is opened, and the second magnetic valve (207) cuts out.While obtaining cold water with high temperature side heat pump, after hot water storage tank (501) reaches design temperature, water can not heat again, and now high temperature side heat pump must stop, and should move low temperature side heat pump and continue to obtain cold water.
Closing high temperature side heat pump (200), while only moving low temperature side heat pump (100), the first heat exchanger (102) plays condenser effect, and the second heat exchanger (103) plays evaporimeter effect, can produce cold water.
For the C function that cold water is provided, be mainly in this function of summer operation.
In summer, need to freeze to room, now the present embodiment can meet the requirement of room refrigeration.
Take below and only move low temperature side heat pump (100) and describe as example:
Now, the first heat exchanger (102) is as condenser discharges heat in air; And the second heat exchanger (103) is as evaporimeter draw heat in water, thereby make water for cooling, obtain cold water.
In above-mentioned acquisition cold water process, the first water route switch (303), the 3rd water route switch (306), the 4th water route switch (305), the 5th water route switch (404) are all closed, and the second water route switch (304) is opened; The first water pump (301) is opened, comprise the water route of the second heat exchanger (103), the water route of the water route of the 3rd heat exchanger (202), the 5th heat exchanger (302), and the 6th water route switch (403) of opening, fan coil (402) forms the 3rd water circulation path that can produce cold water.
Cold water is in service at fan coil (402), and the pressure air draft of fan for the finned heat exchanger that fan coil (402) flows through by cold water, constantly blows to cooled air in room, thereby make room reach refrigeration requirement.
D) provide middle warm water and cold water simultaneously
For the D function that middle warm water and cold water are provided simultaneously, be mainly in this function of summer operation.
In summer, sometimes need to room refrigeration, but also need domestic hot-water.
While meeting this function, need open high temperature side heat pump (200), low temperature side heat pump (100) is out of service.
The cold water of above-mentioned generation can be the condition that room provides refrigeration in summer.
In obtaining cold water process, the first water route switch (303), the 3rd water route switch (306), the 4th water route switch (305), the 5th water route switch (404) are all closed, and the second water route switch (304) is opened; The first water pump (301) is opened, the water route that comprises the second heat exchanger (103), the water route of the 3rd heat exchanger (202), the water route of the 5th heat exchanger (302), and the 6th water route switch (403) of opening, fan coil (402) forms the 3rd water circulation path that can produce cold water.
Now the 3rd heat exchanger (202) constantly obtains heat in water circulation as evaporimeter, and this heat is delivered in the 4th heat exchanger (203) by high temperature side heat pump (200), the 4th heat exchanger (203) is now as condenser, heat in the second refrigerant is delivered to water, then is transported to storage in heat exchanger type hot water storage tank (501).Provide at the same time in the D function of hot water and cold water, first electromagnetic valve switch (206) of high temperature side heat pump (200) will be opened, the second electromagnetic valve switch (207) will be closed, and with this, stop the heat in condensed the second refrigerant to be delivered to the water in the 5th heat exchanger (302).Room refrigeration Deng the water temperature in heat exchanger type hot water storage tank (501), reaches after domestic hot-water's design temperature, provides the D function of hot water and cold water to close simultaneously, in order to start the C function that cold water is only provided.
For using electricity wisely more, improve energy-saving efficiency, the optional frequency-changeable compressor of doing of the first compressor (101) of low temperature side heat pump (100).Temperature Setting by water circulation (300) and cold water circulation (400) system and system water circulation (500) comes intermittently to start low temperature side heat pump (100), with this, further reaches energy-saving effect.
Embodiment 2
Referring to Fig. 2, the binary compression heat pump system of the present embodiment and the difference of embodiment 1 are, first heat exchanger (102) of low temperature side heat pump (100) does not adopt from air and to absorb or the finned heat exchanger of discharges heat, adopt source, ground, or the refrigerant type heat exchanger of the water at water source is (such as plate type heat exchanger but select, shell and tube exchanger, double pipe heat exchanger etc.), buried thereby heat source side can adopt, lake water, river, seawater etc.
Disclosed the utility model preferred embodiment is just for helping to set forth the utility model above.Preferred embodiment does not have all details of detailed descriptionthe, and also not limiting this utility model is only the described specific embodiment.Obviously, according to the content of this description, can make many modifications and variations.These embodiment are chosen and specifically described to this description, is in order to explain better principle of the present utility model and practical application, thereby under making, technical field technical staff can understand and utilize the utility model well.The utility model is only subject to the restriction of claims and four corner and equivalent.
Claims (7)
1. the binary compression heat pump system that can produce high-temperature-hot-water, it is characterized in that, the high temperature side heat pump that comprises low temperature side heat pump and carry out with it heat exchange, and the water circulation and the cold water circulating system that connect described low temperature side heat pump and described high temperature side heat pump, wherein
Described low temperature side heat pump comprises and compresses the first compressor of the first refrigerant, the first expansion valve that the first refrigerant is carried out the first heat exchanger of condensation or evaporation and the second heat exchanger, the first refrigerant of the first heat exchanger or the second heat exchanger condensation is reduced pressure, and the cross valve of convertible the first refrigerant commutation, described the first compressor, the first heat exchanger, the second heat exchanger, the first expansion valve and cross valve and the pipeline between them provide the peripheral passage of the first refrigerant;
Described high temperature side heat pump comprises the second compressor that compresses the second refrigerant, evaporate the 3rd heat exchanger that the second refrigerant is used, the 4th heat exchanger that condensation the second refrigerant is used, the second expansion valve that the second refrigerant of described the 4th heat exchanger condensation is reduced pressure, and first magnetic valve and the second magnetic valve, wherein said the 3rd heat exchanger, the second compressor, the 4th heat exchanger, the first magnetic valve, the second expansion valve provide the first peripheral passage of described the second refrigerant;
Described water circulation and cold water circulating system comprise the first water pump, the the first water route switch being arranged in parallel with described the first water pump, connect described the first water pump and the first water route switch and the second water route switch being arranged in parallel and the 3rd water route switch, the 5th heat exchanger being connected with the second refrigerant pipeline of described high temperature side heat pump and the water lines of described water circulation and cold water circulating system respectively, be arranged on the 4th water route switch between the water route mouth of described the 5th heat exchanger and the water route mouth of described the 4th heat exchanger, be arranged on the 5th water route switch between the second heat exchanger and the 3rd heat exchanger, and the 6th water route switch and fan coil of series connection setting, wherein said the 6th water route switch and described fan coil and described the 5th water route switch in parallel arrange, described the second water route switch is connected with the water route mouth of described the 5th heat exchanger, described the 3rd water route switch is connected with the water route mouth of described the 4th heat exchanger, wherein,
Described the 3rd heat exchanger, the second compressor, the 4th heat exchanger, the second magnetic valve, the 5th heat exchanger, the second expansion valve provide the second peripheral passage of described the second refrigerant;
Move described low temperature side heat pump and high temperature side heat pump simultaneously and can produce high-temperature-hot-water, described in isolated operation, low temperature side heat pump or high temperature side heat pump can produce cold water, described in isolated operation low temperature side heat pump can produce in warm water, high temperature side heat pump can produce cold water and middle warm water simultaneously described in isolated operation.
2. the binary compression heat pump system that can produce high-temperature-hot-water as claimed in claim 1, it is characterized in that, move described low temperature side heat pump and high temperature side heat pump, described the second heat exchanger, the first water pump, the second water route switch, the 5th heat exchanger, the 3rd heat exchanger, the 5th water route switch provide first water circulation path that can produce high-temperature-hot-water simultaneously;
Low temperature side heat pump described in isolated operation, the second water circulation path of warm water during described the second heat exchanger, the first water route switch, the 3rd water route switch, the 4th heat exchanger, the 4th water route switch, the 3rd heat exchanger, the 5th water route switch provide and can produce;
Low temperature side heat pump described in isolated operation, described the second heat exchanger, the first water pump, the second water route switch, the 5th heat exchanger, the 3rd heat exchanger, fan coil and the 6th water route switch provide the 3rd water circulation path that can produce cold water;
High temperature side heat pump described in isolated operation, described the second heat exchanger, the first water pump, the second water route switch, the 5th heat exchanger, the 3rd heat exchanger, fan coil and the 6th water route switch provide the 3rd water circulation path that can produce cold water, and by the 4th heat exchanger heat release, provide middle warm water.
3. the binary compression heat pump system that can produce high-temperature-hot-water as claimed in claim 1, it is characterized in that, described the 4th heat exchanger is provided with two water route mouths to form circulation waterway, between described two water route mouths, be provided with the 7th water route switch and the second water pump, described the 3rd water route switch is communicated to the pipeline between described the 7th water route switch and described the second water pump;
The circulation waterway of described the 4th heat exchanger, through a heat exchanger type hot water storage tank, passes to its heat in the water storing in described heat exchanger type hot water storage tank.
4. the binary compression heat pump system that can produce high-temperature-hot-water as claimed in claim 3, is characterized in that, described binary compression heat pump system is only stored high-temperature-hot-waters in a large number in operation at night and in described heat exchanger type hot water storage tank; Do not move by day described binary compression heat pump system, only the hot water that stores in described heat exchanger type hot water storage tank provides heating and domestic hot-water.
5. the binary compression heat pump system that can produce high-temperature-hot-water as claimed in claim 1, is characterized in that, described the first heat exchanger is from air, to absorb or the finned heat exchanger of discharges heat.
6. the binary compression heat pump system that can produce high-temperature-hot-water as claimed in claim 1, is characterized in that, described the first heat exchanger is for adopting air-source, source, ground, or the air at water source is to refrigerant, the heat exchanger of water to refrigerant.
7. the binary compression heat pump system that can produce high-temperature-hot-water as claimed in claim 1, is characterized in that, described the first compressor is frequency-changeable compressor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299943A (en) * | 2015-11-27 | 2016-02-03 | 重庆通用工业(集团)有限责任公司 | Double-machine head centrifugal chiller system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299943A (en) * | 2015-11-27 | 2016-02-03 | 重庆通用工业(集团)有限责任公司 | Double-machine head centrifugal chiller system |
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