CN103983013A - Novel frostless air source heat pump water heater - Google Patents
Novel frostless air source heat pump water heater Download PDFInfo
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- CN103983013A CN103983013A CN201410239311.3A CN201410239311A CN103983013A CN 103983013 A CN103983013 A CN 103983013A CN 201410239311 A CN201410239311 A CN 201410239311A CN 103983013 A CN103983013 A CN 103983013A
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Abstract
The invention discloses a novel frostless air source heat pump water heater which comprises a refrigerating fluid circulation loop, an air compressor and an air expander. The refrigerating fluid circulation loop comprises a compressor, a condenser, a throttling device and a heat exchanger which are connected through refrigerating fluid pipelines. The heat exchanger comprises a shell, a coil placed inside the shell, an air inlet and an air outlet. Refrigerating fluid circulates in the coil, and an air leading-in space is formed inside the shell outside the coil. The air inlet is connected with the air compressor, the air outlet is connected with the air expander, so that the air output through the air compressor is input to the air leading-in space from the air inlet to conduct heat exchange with the refrigerating fluid, and then the air is output to the air expander from the air outlet after heat release. The novel frostless air source heat pump water heater is simple in structure and capable of effectively preventing frosting.
Description
Technical field
The present invention relates to water heater, particularly a kind of novel Frostless air source heat pump water heater.
Background technology
Air source hot pump water heater, be adopt refrigeration principle from air, absorb heat manufacture hot water " heat carrying " install.By allowing working medium constantly complete the thermodynamic cycle process of evaporation (draw heat in environment) → compression → condensation (emitting heat) → throttling → evaporate again, thus by the transfer of heat in environment in water.This device mainly obtains heat energy from air, has advantages of solar water heater energy-saving and environmental protection, safety, has solved again solar water heater and has relied on sunlight to adopt heat and inconvenient problem is installed.In addition, it does not have the danger of electric heater electric leakage yet.
But the air source hot pump water heater using at present has the problem of environmental suitability, north of china in winter environment temperature is on the low side, causes the easy frosting of outdoor evaporimeter.How the air source hot pump water heater of extensive use is at present by four-way change-over valve Defrost technology, and this traditional method cannot thoroughly remove frost layer and fault rate is high.
For addressing the above problem, be mostly to utilize the defrosting equipment of water heater and control method to defrost at present, as the defrosting control method of DC frequency-changing band water heater air conditioner device, phase change heat accumulator defrosting, parallel mutual defrosting etc.But these methods are only also for proposing technical scheme after water heater frosting, fundamentally do not solve frosting problem.
In view of this, a kind of air source hot pump water heater that solves frosting source problem need to be proposed.
Summary of the invention
Main purpose of the present invention is intended to propose a kind of novel Frostless air source heat pump water heater, simple in structure, effectively preventing frosting.
For reaching above-mentioned purpose, the invention provides a kind of air source hot pump water heater, comprise refrigerant circulation loop, air compressor and air expander.Refrigerant circulation loop comprises the compressor, condenser, throttling arrangement and the heat exchanger that connect by refrigerant line; Wherein, described heat exchanger comprises housing, is located at the coil pipe in this housing, an air inlet and a gas outlet, and circulation cold-producing medium in described coil pipe, the enclosure interior outside described coil pipe forms air and introduces space; Described air inlet is connected with described air compressor, described gas outlet is connected with described air expander, introduce in space and described cold-producing medium heat exchange so that input described air from described air inlet through the air of described air compressor output, and export described air expander to from described gas outlet after heat release.
Preferably, the enclosure interior outside described coil pipe contains heat-conducting liquid, and described heat-conducting liquid surrounds described coil pipe and a space is left in its liquid level top; Inputting described air from described air inlet through the air of described air compressor output introduces in space and by described heat-conducting liquid and described cold-producing medium heat exchange.
Preferably, described air source hot pump water heater also comprises a by-passing parts, it is located in described air introducing space and joins with described air inlet, or be connect described air inlet and described air compressor and stretch into described air and introduce the pipe fitting in space, the part that described by-passing parts is positioned at described air introducing space has multiple gas ports so that the air of described air compressor output enters described air introducing spatial time sharing stream.
Preferably, described heat exchanger is provided with a draining valve.
Preferably, described heat exchanger top is provided with a safety valve.
Preferably, described air compressor is centrifugal air compressor, and described air expander is centrifugal type air decompressor.
Preferably, described air compressor and described air expander are coaxial setting.
Preferably, described air inlet is located at the bottom of the shell of described heat exchanger, and the top of the shell of described heat exchanger is located in described gas outlet.
Preferably, on the outer wall of the shell of described heat exchanger, be coated with insulation material.
Preferably, between described condenser and described throttling arrangement, set gradually a receiver and a device for drying and filtering.
Air source hot pump water heater proposed by the invention, by inputting HTHP air and cold-producing medium carries out heat exchange in outdoor heat converter, avoid outdoor Cryogenic air directly to contact with the coil pipe in heat exchanger, therefore when northern temperature is on the low side, this device equally can be effectively to the coil pipe even preventing frosting that defrosts.In addition, the present invention has saved cross valve, can avoid reducing because cross valve fault causes the thermal efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the air source hot pump water heater of one embodiment of the invention.
Detailed description of the invention
For making content of the present invention more clear understandable, below in conjunction with Figure of description, content of the present invention is described further.Certainly the present invention is not limited to this specific embodiment, and the known general replacement of those skilled in the art is also encompassed in protection scope of the present invention.
In this manual and in claims, should understand and be called as when ' attach ' to another element or " being connected " with another element when an element, it can be directly connected to another element, maybe can have intervention element.
Fig. 1 is the structural representation of the air source hot pump water heater of one embodiment of the invention.As shown in Figure 1, air source hot pump water heater comprises compressor 1, condenser 2, throttling arrangement 5, outdoor heat converter 6, air compressor 7 and air expander 8.Wherein, compressor 1, condenser 2, throttling arrangement 5 and heat exchanger 6 are connected by refrigerant line, form refrigerant circulation loop.Optionally, also can set gradually the receiver 3 being connected with condenser 2 and the device for drying and filtering 4 being connected with throttling arrangement 5 between condenser 2 and throttling arrangement 5, receiver 3 is for storing cold-producing medium, and device for drying and filtering 4 is for filtering moisture and impurity.In this refrigerant circulation loop, in heat exchanger 6, the cold-producing medium of heat absorption evaporation enters compressor 1 with vapor form, becomes high temperature and high pressure gas after compressed to enter condenser 2.In condenser 2, high-temperature high-pressure refrigerant steam carries out heat exchange with the cold water of inputting from import A, and the temperature of cold-producing medium declines, and becomes liquid state from HTHP gaseous state, discharge a large amount of heats, and cool water heating to uniform temperature is exported for user from outlet B.And liquid refrigerant after heat release through receiver 3, device for drying and filtering 4 to throttling arrangement 5, as expansion valve or choke valve, carry out getting back to heat exchanger 6 after reducing pressure by regulating flow and Flow-rate adjustment.
Because the boiling point of cold-producing medium is very low, even if heat exchanger 6 interior circulations is Cryogenic air, cold-producing medium still can absorb heat evaporation and enter compressor 1 with gaseous state.But the air of crossing low temperature in heat exchanger easily causes heat exchanger frosting.For addressing this problem, the present invention adopts shell and tube exchanger as heat exchanger 6 and coordinates air compressor 7 and air expander 8, to form the open system being made up of heat exchanger 6, air compressor 7 and air expander 8.Specifically, heat exchanger 6 is shell and tube exchanger, comprises a housing, is located at the coil pipe in this housing, an air inlet and a gas outlet.The cold-producing medium that circulates in coil pipe, the enclosure interior outside coil pipe forms an air and introduces space, the air that carries out heat exchange for circulating.The air inlet of heat exchanger 6 is connected with air compressor 7, and gas outlet is connected with air expander 8.Preferably, air inlet is located at the bottom of the shell of heat exchanger 6, and the top of the shell of heat exchanger 6 is located in gas outlet.So, outdoor air enters air compressor 7, compression becomes after high temperature and high pressure gas the air that passes into heat exchanger 6 from air inlet and introduces space, thereby carry out heat exchange with cold-producing medium, the heat of vaporization that cold-producing medium absorbs this high temperature and high pressure gas is gaseous state, and pressure-air after heat release after air expander 8 concora crush discharged in outdoor environment.As known from the above, in heat exchanger side, the air that enters heat exchanger 6 is high temperature and high pressure gas, can not only with cold-producing medium heat exchange, also can prevent that air themperature from dropping to dew-point temperature following and cause heat exchanger 6 frostings.
To enter the high temperature and high pressure gas of heat exchanger and the heat exchange efficiency of coil pipe inner refrigerant and increase the coefficient of heat transfer in order further to improve, can be at a certain amount of heat-conducting liquid of storage inside of the coil pipe shell body of heat exchanger 6.Heat-conducting liquid underfill heat exchanger 6, and preferably surround outside coil pipe, and all leave certain space between the upper and lower side of heat exchanger housing body.The air of HTHP enters air from the air inlet of heat exchanger 6 bottoms and introduces space, and gas density is smaller, can rise through heat-conducting liquid, and the process of rising is also the process of heat exchange.The space available buffer air pressure variations of heat-conducting liquid liquid level top, makes outlet pressure stable.Thus, enter high temperature and high pressure gas that this air introduces space using heat-conducting liquid as medium, by this medium indirectly and cold-producing medium carry out heat exchange.Concrete, first this high temperature and high pressure gas carries out heat exchange with heat-conducting liquid, and heat-conducting liquid absorbs after heat and cold-producing medium heat exchange again.Heat-conducting liquid can be water or other liquid solutions, has than the better specific heat of gas and thermal conductivity factor, therefore can effectively improve and strengthen heat exchanger effectiveness.The HTHP air setting of heat exchanger 6 interior parts becomes water can also supplement heat-conducting liquid simultaneously.As shown in the figure, on heat exchanger 6, can be provided with a draining valve 10, control in order to the liquid level to heat-conducting liquid.
In addition, enter the inner Rapid Flow blowing air of heat exchanger 6 for fear of high temperature and high pressure gas from air inlet and introduce space and discharge from gas outlet, can on heat exchanger 6, be provided with a by-passing parts so that enter high temperature and high pressure gas wherein can with the abundant heat exchange of cold-producing medium.This by-passing parts can be to be located at air to introduce the manifold members or the pipe fitting that in space, join with air inlet, also can be to connect air inlet and air compressor 7 and extend into air to introduce the pipe fitting in space, the part that by-passing parts is positioned within air introducing space can be provided with multiple gas ports, introduces spatial time sharing stream thereby make high temperature and high pressure gas enter air.
For air compressor 7 and air expander 8, preferably both all adopt centrifugal machine.Further, centrifugal air compressor 7 and centrifugal type air decompressor 8 are coaxial setting, to reclaim a part of merit, reduce the wasted work amount of system.
In addition, heat exchanger 6 tops can be provided with a safety valve 9, too high for preventing heat exchanger internal pressure.On the outer wall of the shell of heat exchanger 6, also can be coated certain thickness insulation material, for the temperature insulation of the high temperature and high pressure gas to its inside.
In sum, air source hot pump water heater proposed by the invention, by inputting HTHP air and cold-producing medium carries out heat exchange in outdoor heat converter, avoid outdoor Cryogenic air directly to contact with heat exchanger internals, therefore when northern temperature is on the low side, this device equally can be effectively to the heat exchanger even preventing frosting that defrosts.And the present invention has saved cross valve, can avoid reducing because cross valve fault causes the thermal efficiency.Further, by taking heat-conducting liquid as medium, the HTHP air that makes to input heat exchanger indirectly and cold-producing medium heat exchange, has improved heat exchange efficiency more.
Although the present invention discloses as above with preferred embodiment; so described many embodiment only give an example for convenience of explanation; not in order to limit the present invention; those skilled in the art can do some changes and retouching without departing from the spirit and scope of the present invention, and the protection domain that the present invention advocates should be as the criterion with described in claims.
Claims (10)
1. an air source hot pump water heater, is characterized in that, comprising:
Refrigerant circulation loop, it comprises the compressor, condenser, throttling arrangement and the heat exchanger that connect by refrigerant line;
Air compressor; And air expander,
Wherein, described heat exchanger comprises housing, is located at the coil pipe in this housing, an air inlet and a gas outlet; Circulation cold-producing medium in described coil pipe, the enclosure interior outside described coil pipe forms air and introduces space; Described air inlet is connected with described air compressor, described gas outlet is connected with described air expander, introduce in space and described cold-producing medium heat exchange so that input described air from described air inlet through the air of described air compressor output, and export described air expander to from described gas outlet after heat release.
2. air source hot pump water heater according to claim 1, is characterized in that, the enclosure interior outside described coil pipe contains heat-conducting liquid, and described heat-conducting liquid surrounds described coil pipe and a space is left in its liquid level top; Inputting described air from described air inlet through the air of described air compressor output introduces in space and by described heat-conducting liquid and described cold-producing medium heat exchange.
3. air source hot pump water heater according to claim 1 and 2, it is characterized in that, also comprise a by-passing parts, it is located in described air introducing space and joins with described air inlet, or be connect described air inlet and described air compressor and stretch into described air and introduce the pipe fitting in space, the part that described by-passing parts is positioned at described air introducing space has multiple gas ports so that the air of described air compressor output enters described air introducing spatial time sharing stream.
4. air source hot pump water heater according to claim 2, is characterized in that, described heat exchanger is provided with a draining valve.
5. air source hot pump water heater according to claim 1 and 2, is characterized in that, described heat exchanger top is provided with a safety valve.
6. air source hot pump water heater according to claim 1 and 2, is characterized in that, described air compressor is centrifugal air compressor, and described air expander is centrifugal type air decompressor.
7. air source hot pump water heater according to claim 6, is characterized in that, described air compressor and described air expander are coaxial setting.
8. air source hot pump water heater according to claim 1 and 2, is characterized in that, described air inlet is located at the bottom of the shell of described heat exchanger, and the top of the shell of described heat exchanger is located in described gas outlet.
9. air source hot pump water heater according to claim 1 and 2, is characterized in that, on the outer wall of the shell of described heat exchanger, is coated with insulation material.
10. air source hot pump water heater according to claim 1 and 2, is characterized in that, sets gradually a receiver and a device for drying and filtering between described condenser and described throttling arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410239311.3A CN103983013B (en) | 2014-05-30 | 2014-05-30 | Novel frost-free air source hot pump water heater |
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| CN201410239311.3A CN103983013B (en) | 2014-05-30 | 2014-05-30 | Novel frost-free air source hot pump water heater |
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| CN103983013A true CN103983013A (en) | 2014-08-13 |
| CN103983013B CN103983013B (en) | 2017-03-01 |
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Cited By (7)
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| CN105352213A (en) * | 2015-12-14 | 2016-02-24 | 上海理工大学 | Steam and air cascade refrigerating system |
| CN105910333A (en) * | 2015-04-13 | 2016-08-31 | 李华玉 | Open type bidirectional thermal cycle and first kind thermal driving compression heat pump |
| CN105928237A (en) * | 2015-04-13 | 2016-09-07 | 李华玉 | Open type two-way thermal circulation and first-class thermal driving compression heat pump |
| CN105972821A (en) * | 2016-01-25 | 2016-09-28 | 中山昊天节能科技有限公司 | Air energy water heater with intelligent identification function |
| CN106123179A (en) * | 2016-08-17 | 2016-11-16 | 北京丰联奥睿科技有限公司 | A kind of compressed air refrigeration system |
| CN108266842A (en) * | 2018-01-29 | 2018-07-10 | 青岛志青华新能源有限公司 | A kind of compression air-conditioning system |
| CN112283970A (en) * | 2020-09-23 | 2021-01-29 | 杨吉 | Frostless air source heat pump system |
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| JPH1054602A (en) * | 1996-06-24 | 1998-02-24 | Shinten Jidoka Kofun Yugenkoshi | Self screen device for air conditioner outdoor heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105910333A (en) * | 2015-04-13 | 2016-08-31 | 李华玉 | Open type bidirectional thermal cycle and first kind thermal driving compression heat pump |
| CN105928237A (en) * | 2015-04-13 | 2016-09-07 | 李华玉 | Open type two-way thermal circulation and first-class thermal driving compression heat pump |
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| CN106123179A (en) * | 2016-08-17 | 2016-11-16 | 北京丰联奥睿科技有限公司 | A kind of compressed air refrigeration system |
| CN108266842A (en) * | 2018-01-29 | 2018-07-10 | 青岛志青华新能源有限公司 | A kind of compression air-conditioning system |
| CN112283970A (en) * | 2020-09-23 | 2021-01-29 | 杨吉 | Frostless air source heat pump system |
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