CN217442004U - Indoor parallel flow micro-channel heat exchanger and air source heat pump system thereof - Google Patents
Indoor parallel flow micro-channel heat exchanger and air source heat pump system thereof Download PDFInfo
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- CN217442004U CN217442004U CN202220745509.9U CN202220745509U CN217442004U CN 217442004 U CN217442004 U CN 217442004U CN 202220745509 U CN202220745509 U CN 202220745509U CN 217442004 U CN217442004 U CN 217442004U
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The utility model relates to an indoor parallel flow micro-channel heat exchanger and an air source heat pump system thereof, the indoor parallel flow micro-channel heat exchanger comprises a shell and a plurality of heat exchange modules which are arranged in parallel and are positioned in the shell, the heat exchange modules comprise a heat exchange shell, a plurality of rows of parallel flow micro-channels which are arranged in the heat exchange shell, fins which are arranged between the parallel flow micro-channels and heat storage/cold medium which is arranged between the heat exchange shell and the parallel flow micro-channels; the upper and lower both ends of casing are equipped with air-out module and air inlet module respectively, and air inlet module communicates and installs indoor air quality sensor with outdoor new trend, air-out module and indoor intercommunication. The indoor parallel flow micro-channel heat exchanger reduces the refrigerant filling amount, reduces the conveying energy consumption and energy loss while ensuring the heat exchange effect, maintains the indoor comfort by the built-in heat storage/cold medium, and improves the energy utilization rate.
Description
Technical Field
The utility model relates to an air conditioner or heat pump technical field, concretely relates to indoor concurrent flow microchannel heat exchanger and air source heat pump system thereof.
Background
In order to reduce the carbon emission of buildings and achieve the aim of double carbon, the nation encourages to gradually replace fossil energy such as coal, petroleum and natural gas by utilizing renewable energy such as solar energy and wind energy and zero-carbon nuclear energy to supply cold/heat for buildings. For the utilization of renewable energy, photovoltaic power generation, wind-solar power generation and other methods are generally adopted to convert the renewable energy into electric energy for use at present. The air source heat pump is used as an efficient electricity utilization technology, heat is extracted from air, low-grade heat energy is converted into high-grade heat energy, and electricity waste caused by direct electricity utilization for cold/warm supply can be reduced.
For an air source heat pump system, most of the traditional indoor units are finned tube heat exchangers, and a building is cooled/heated through a built-in fan. The finned tube heat exchanger is easy to deposit dust and dirt, is inconvenient to clean, and is easy to cause health problems such as respiratory diseases of indoor residents. In addition, the traditional indoor unit adopts a suspended installation mode, so that the temperature at high indoor positions is higher, the temperature of working and moving areas of personnel is lower, and the energy is not effectively and reasonably utilized when heating in winter; when defrosting is performed in winter, the air source heat pump system absorbs heat from indoor air to cause indoor temperature reduction, or an electric heating device needs to be added to the system to further reduce the system energy efficiency, so that the user experience is influenced, meanwhile, the waste of power resources is caused, the use cost of the user is increased, and the popularization and the application of the heat exchanger in the market are not facilitated.
Although some indoor units in the existing household air-conditioning technology adopt microchannel heat exchangers, the finned tube heat exchangers are only replaced by the microchannel heat exchangers, the structure of the indoor units is similar to that of the traditional indoor units, heat exchange is not directly carried out on the indoor air with outdoor fresh air, and the indoor air is adjusted only through a ventilation mode, so that the indoor air quality is general, and the energy consumption is increased; meanwhile, the existing floor type air conditioner indoor unit is mostly used in large spaces such as living rooms, the air outlet of an air conditioner is high, the temperature near the air outlet is optimum, the temperature of other areas is general, the heat loss is high, and the user experience is poor.
Disclosure of Invention
In order to overcome the defect among the above-mentioned prior art, the utility model provides an indoor concurrent flow microchannel heat exchanger and air source heat pump system thereof adopts concurrent flow microchannel heat exchanger to replace the finned tube heat exchanger of traditional indoor set, further reduces refrigerant charge volume in the system, reduces user's use cost when reducing the system energy consumption, is favorable to having the popularization and the application of indoor concurrent flow microchannel heat exchanger's air source heat pump system on market.
In order to achieve the purpose of the invention, the utility model adopts the following technical scheme:
an indoor parallel flow micro-channel heat exchanger comprises a shell and a plurality of heat exchange modules which are arranged in parallel and are positioned in the shell, wherein each heat exchange module comprises a heat exchange shell, a plurality of rows of parallel flow micro-channels arranged in the heat exchange shell, and fins arranged between the parallel flow micro-channels; the upper end and the lower end of the shell are respectively provided with an air outlet module and an air inlet module, the air inlet module is communicated with outdoor fresh air, and the air outlet module is communicated with the indoor space.
As one of the preferable schemes of the utility model, the air inlet module comprises a fresh air pipe and a fresh air valve, one end of the fresh air pipe is communicated with the outdoor air through the fresh air valve, the other end is communicated with the air inside the body through a notch, and one side of the fresh air pipe facing to the user is provided with an air inlet fence and an air quality sensor; the heat pump system further comprises a control device, and the control device is used for controlling the rotating speed of the opening of the fresh air valve in real time according to the value of the air quality sensor.
As one of the preferable schemes of the utility model, the air outlet module comprises an air outlet pipe, an indoor fan and an air outlet fence; the control device is used for controlling the opening and the rotating speed of the indoor fan in real time according to the value of the air quality sensor.
As one of the preferred schemes of the utility model, the air quality sensor includes temperature and humidity sensor and carbon dioxide concentration sensor.
As one of the preferable schemes of the present invention, in the indoor heat exchanger, the heat exchange module further includes a cold/heat storage medium filled in the heat exchange housing.
As one of the preferred schemes of the utility model, indoor heat exchanger is the console mode, and the air-out fence is located the top of going out the tuber pipe.
As one of the preferable schemes of the utility model, the bottom of the heat exchange module in the shell is provided with a condensed water tray.
As one of the preferable schemes of the utility model, the surface of the heat exchange module in the shell is also provided with heat exchange module fins.
As one of the preferable proposals of the utility model, the side of the shell is provided with a refrigerant inlet and outlet, a heat/cold accumulation medium inlet and outlet and a condensed water outlet; the refrigerant inlet and outlet of the shell are communicated with the parallel flow micro-channel, the heat/cold accumulation medium is communicated with the interior of the heat exchange shell, and the condensed water outlet is communicated with the condensed water tray.
The utility model also provides an air source heat pump system, including outdoor heat exchanger, indoor heat exchanger, compressor, choke valve, four-way reversing valve and vapour and liquid separator, wherein indoor heat exchanger adopts indoor parallel flow microchannel heat exchanger.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1) the utility model discloses a parallel flow microchannel heat exchanger replaces original indoor heat exchanger, has reduced the refrigerant volume of filling, has reduced transport energy consumption and energy loss when guaranteeing the heat transfer effect, improves energy utilization.
2) The utility model discloses a concurrent flow microchannel heat exchanger simple structure ingenious, it is convenient to make, but the production of modularization, reduction in manufacturing cost, and then reduction user's use cost is favorable to the popularization and the application of above-mentioned air source heat pump system on market.
3) The indoor heat exchanger of the utility model is internally provided with the heat storage/cold storage medium, which provides heat for defrosting of the system in winter and ensures the indoor comfort; in addition, the heat/cold storage medium prolongs the duration time of the indoor temperature after the system is shut down in winter and summer, thereby not only improving the indoor comfort, but also being beneficial to peak clipping and valley filling of electric power;
4) the indoor heat exchanger in the utility model can meet the demands of cooling in summer and heating in winter, the floor-type installation ensures the load demand of the human body activity area, and avoids the heat waste caused by the heat concentrated on the roof; the outdoor fresh air is communicated and the indoor air quality sensor is installed, so that the fresh air requirement is ensured, the indoor air quality is effectively improved, and a healthy and proper living environment is provided; the parallel flow micro-channel heat exchanger has good heat exchange effect and small volume, and greatly saves the building space.
Drawings
Fig. 1 is a schematic structural diagram of an indoor parallel flow microchannel heat exchanger according to the present invention;
FIG. 2 is a cross-sectional view of a parallel flow microchannel of the present invention in a cross-sectional view;
FIG. 3 is a cross-sectional view of a vertical arrangement of parallel flow microchannels according to the present invention;
fig. 4 is a schematic top view of the indoor parallel flow microchannel heat exchanger according to the present invention;
FIG. 5 is a cross-sectional view of the parallel flow microchannel of the present invention in a horizontal arrangement;
FIG. 6 is a cross-sectional view of a longitudinally arranged parallel flow microchannel of the present invention in a top view;
fig. 7 is a schematic diagram of a right-view structure of the indoor parallel flow microchannel heat exchanger according to the present invention;
FIG. 8 is a cross-sectional view of the cross-flow microchannel of the present invention in a right-side view;
FIG. 9 is a cross-sectional view of the parallel flow microchannel of the present invention in a longitudinally arranged right view configuration;
fig. 10 is a schematic structural diagram of the air source heat pump system according to the present invention.
Reference numerals are as follows: 1. an indoor parallel flow microchannel heat exchanger; 1-1, an indoor air outlet module; 1-2, an indoor air inlet module; 1-3, indoor air inlet barriers; 1-4, heat/cold accumulation medium inlet; 1-5, a heat/cold accumulation medium outlet; 1-6, indoor refrigerant inlet and outlet copper pipes; 1-7, a condensed water receiving disc; 1-8, indoor microchannel fins; 1-9, an indoor refrigerant manifold; 1-10, a heat exchange module; 1-11, a heat storage medium header pipe; 1-12, a filter screen; 1-13, an indoor fan; 1-14, fresh air pipe; 1-15, heat exchange module fins; 1-16, indoor parallel flow micro-channel; 1-17, a heat exchange shell; 1-18, indoor splitter plate; 2. a throttle valve; 3. an outdoor heat exchanger; 4. an outdoor fan; 5. a four-way reversing valve; 6. a gas-liquid separator; 7. a compressor; 8. and a control device.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 9, the indoor parallel flow microchannel heat exchanger of the present invention includes a housing and a plurality of parallel heat exchange modules located in the housing, wherein each heat exchange module includes a heat exchange housing, a plurality of rows of parallel flow microchannels located in the heat exchange housing, and fins located between the parallel flow microchannels; the upper end and the lower end of the shell are respectively provided with an air outlet module and an air inlet module, and air enters the body from the air inlet module to exchange heat with the heat exchange module and is discharged through the air outlet module; the air inlet module is communicated with outdoor fresh air, and the air outlet module is communicated with the indoor.
The indoor heat exchanger adopts the parallel flow microchannel heat exchanger, compares in the finned tube heat exchanger in traditional indoor set, and the parallel flow microchannel heat exchanger can effectively reduce system refrigerant charge volume, has reduced user's use cost, has reduced the carbon emission volume that leads to by the refrigerant preparation simultaneously, and reinforcing user's use is experienced.
Specifically, the heat exchange module comprises indoor parallel flow micro-channels 1-16, heat exchange shells 1-17 and indoor micro-channel fins 1-8 arranged between the parallel flow micro-channels, the indoor parallel flow micro-channels 1-16 are communicated with indoor refrigerant header pipes 1-9 through indoor flow distribution plates 1-18, the indoor refrigerant header pipes 1-9 are communicated with refrigerant copper pipes 1-6, and refrigerants are distributed to the indoor parallel flow micro-channels 1-16 for heat exchange. In order to enhance heat exchange, the heat exchange housings 1-17 are made of metal, preferably aluminum. Meanwhile, heat/cold accumulation media 1-5 are filled between the parallel flow micro-channels in the heat exchange shell, the heat/cold accumulation media play a role in protecting the indoor parallel flow micro-channels 1-16, the accumulated heat can be used for defrosting in winter, and the accumulated cold can be used for refrigerating in summer.
The cold/heat accumulation medium in the indoor parallel flow micro-channel heat exchanger is selected by comprehensively considering the factors of thermal performance, economy, corrosivity and the like, and the selectable materials include but are not limited to water, heat conduction oil, various chemical phase change heat accumulation materials and the like.
In order to further enhance heat exchange and enhance the use experience of users, heat exchange module fins 1-15 are vertically arranged on the outer wall of a heat exchange shell of each heat exchange module 1-10, a plurality of heat exchange modules 1-10 are connected in parallel to form a heat exchange integral structure, a shell made of metal materials is coated outside the heat exchange integral structure, a distance is reserved between every two adjacent heat exchange modules 1-10, air circulation is facilitated, and a cold/heat storage medium inlet 1-4 and a cold/heat storage medium outlet 1-5 are formed in the side edge of the indoor heat exchanger shell.
The upper end and the lower end of a shell of the indoor parallel flow micro-channel heat exchanger 1 are respectively provided with an indoor air outlet module 1-1 and an indoor air inlet module 1-2. In order to ensure the indoor air quality, the indoor air inlet module 1-2 comprises a fresh air pipe 1-14 and a fresh air valve, one end of the fresh air pipe is communicated with outdoor air through the fresh air valve, and the other end of the fresh air pipe is communicated with the air in the shell through a notch. In order to facilitate indoor air return, one side, facing a user, of the indoor air inlet module 1-2 is provided with an indoor air inlet fence 1-3 and an indoor quality sensor, the air quality sensor comprises indoor air quality sensors such as a temperature and humidity sensor and a carbon dioxide concentration sensor, and the control device 7 can automatically adjust the opening of the fresh air valve according to indoor temperature and humidity and carbon dioxide concentration so as to effectively guarantee the sanitation and health of personnel in an area.
In order to facilitate heat exchange between the air and the heat exchange module 1-10, the indoor air outlet module 1-1 comprises an air outlet pipe, an air outlet fence and an indoor fan 1-13, wherein the lower part of the air outlet pipe is provided with a notch, the upper part of the air outlet pipe is provided with the air outlet fence, and the air outlet fence is provided with a filter screen 1-12. The control device 7 also automatically adjusts the opening and the rotating speed of the indoor fan 3 according to the indoor temperature and humidity and the carbon dioxide concentration. It is worth integratively, in this patent, the air outlet pipe may not be provided with an indoor fan, and depends on the natural convection and radiation heat exchange mode to exchange heat with the indoor air and the wall, so as to improve the indoor comfort and save the energy; in addition, in the transition seasons such as spring and autumn, the fresh air is sent into the indoor air through the fresh air channel by means of natural convection, and a healthy living environment is provided.
In the indoor parallel flow micro-channel heat exchanger, the bottom of a heat exchange module in a shell is provided with a condensed water disc 1-7, and the condensed water disc 1-7 is convenient for collecting condensed water in summer, so that the influence of the condensed water on the environment is avoided.
Preferably, indoor parallel flow microchannel heat exchanger 1 designs for the console mode, compares with traditional hanging refrigeration/thermal equipment on the wall body, can effectively avoid the heat to pile up at the eminence, and the new trend upwards blows off by indoor fan behind the heat transfer, and the heat in the space is sent out by low to high, is similar to the fin, can strengthen the heat transfer intensity of heat exchanger, and the evaporation/condensation temperature's of existing system that is favorable to reduction can improve space thermal comfort again, and reinforcing user's use is experienced. Indoor parallel flow microchannels 1-16 in the indoor parallel flow microchannel heat exchanger 1 are transversely or longitudinally arranged in a row, so that the plane faces a wall body, the occupation of building space is reduced, and the cost is reduced.
Example 2
The embodiment provides an air source heat pump system, which comprises an outdoor heat exchanger 3, an indoor heat exchanger 1, a compressor 7, a throttle valve 2, a four-way reversing valve 5 and a gas-liquid separator 6, wherein the indoor heat exchanger 1 adopts the indoor parallel flow micro-channel heat exchanger described in the embodiment 1.
Air source heat pump system, the operation process as follows:
in the summer refrigeration working condition, the four-way reversing valve 5 acts, the air source heat pump system is switched to the refrigeration state (as shown by a solid arrow in figure 10), the low-temperature and low-pressure refrigerant enters the indoor heat exchanger 1 to exchange heat with indoor air, and the refrigerant absorbs heat and is evaporated into gas. In the evaporation and heat absorption process, a sensor in the indoor heat exchanger 1 monitors indoor air quality and indoor temperature and humidity in real time, the opening degree of a fresh air valve and the rotating speed of an indoor fan 1-13 are automatically adjusted, and condensed water in the evaporation process flows into a condensed water receiving disc 1-7 of the heat exchanger through a smooth wall surface, so that the floor is prevented from being wetted. After evaporation and heat absorption are finished, low-temperature low-pressure refrigerant gas enters the compressor 7, is compressed to high-temperature high-pressure refrigerant gas, enters the outdoor heat exchanger 3, exchanges heat between the high-temperature high-pressure refrigerant gas and outdoor air, is condensed into high-temperature high-pressure refrigerant liquid under the combined action of forced heat exchange, passes through the throttle valve 2, is changed into low-temperature low-pressure gas-liquid mixture, enters the indoor heat exchanger 1 again, and is circulated in the way to refrigerate. When outdoor temperature is higher in summer and the heat dissipation capacity of the outdoor heat exchanger is poor, at the moment, the indoor heat exchanger contains the cold accumulation medium, and the cold accumulation medium can absorb and store the cold energy of the refrigerant, so that the indoor cold energy can be effectively guaranteed, the indoor comfort is improved, in addition, the existence of the cold accumulation medium can prolong the indoor temperature maintenance time after the system is shut down, and the effect of electric power peak clipping and valley filling is also achieved to a certain extent.
In winter heat supply working condition, the four-way reversing valve 5 acts, the air source heat pump system is switched to a heat supply state (as shown by an open arrow in figure 10), high-temperature and high-pressure gaseous refrigerant from the compressor 7 enters the indoor heat exchanger 1, and heat exchange is carried out with a room through forced convection and radiation. In the condensation heat release process, the heat storage medium stores a part of heat, the temperature of a human body activity area and the change of the carbon dioxide concentration are measured through a carbon dioxide concentration sensor in the indoor heat exchanger 1, and the rotating speed of the fresh air valve and the rotating speed of the indoor fans 1-13 are adjusted. The high-temperature high-pressure liquid refrigerant from the indoor heat exchanger 1 is changed into low-temperature low-pressure gas-liquid mixed refrigerant through the throttle valve 2, and enters the outdoor heat exchanger 3 to absorb heat and evaporate. The evaporated refrigerant gas enters the compressor 7 and then enters the indoor heat exchanger 1, and the circulation is performed, so that heating is performed. In the defrosting working condition in winter, the four-way reversing valve 5 acts to switch the air source heat pump system to the refrigerating state again, and at the moment, the system absorbs the heat stored in the heat storage medium in the indoor heat exchanger 1 in the heating state, so that the refrigerant absorbs heat and evaporates to enter the outdoor heat exchanger 3 to release heat and defrost. When the outdoor heat exchanger 3 has no frost layer, the four-way reversing valve 5 is reversed again, and the air source heat pump system is switched to the heating state again to perform heating.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An indoor parallel flow microchannel heat exchanger which is characterized in that: the heat exchange module comprises a heat exchange shell, a plurality of rows of parallel flow micro-channels and fins, wherein the parallel flow micro-channels are arranged in the heat exchange shell; the upper end and the lower end of the shell are respectively provided with an air outlet module and an air inlet module, the air inlet module is communicated with outdoor fresh air, and the air outlet module is communicated with the indoor.
2. The indoor parallel flow microchannel heat exchanger of claim 1, wherein: the air inlet module comprises a fresh air pipe and a fresh air valve, one end of the fresh air pipe is communicated with outdoor air through the fresh air valve, the other end of the fresh air pipe is communicated with air inside the body through a notch, and one side, facing a user, of the fresh air pipe is provided with an air inlet fence and an air quality sensor; the indoor parallel flow micro-channel heat exchanger further comprises a control device, and the control device is used for controlling the opening of the fresh air valve in real time according to the value of the air quality sensor.
3. The indoor parallel flow microchannel heat exchanger of claim 2, wherein: the air outlet module comprises an air outlet pipe, an indoor fan and an air outlet fence; the control device is also used for controlling the opening and the rotating speed of the indoor fan in real time according to the value of the air quality sensor.
4. The indoor parallel flow microchannel heat exchanger of claim 3, wherein: the air quality sensor comprises a temperature and humidity sensor and a carbon dioxide concentration sensor.
5. The indoor parallel flow microchannel heat exchanger of claim 1, wherein: in the indoor heat exchanger, the heat exchange module also comprises a cold/heat accumulation medium filled in the heat exchange shell.
6. The indoor parallel flow microchannel heat exchanger of claim 1, wherein: the indoor heat exchanger is a floor type, and the air outlet fence is positioned at the top of the air outlet pipe.
7. The indoor parallel flow microchannel heat exchanger of claim 1, wherein: and a condensed water tray is arranged at the bottom of the heat exchange module in the shell.
8. The indoor parallel flow microchannel heat exchanger of claim 1, wherein: and heat exchange module fins are further arranged on the outer surface of the heat exchange module in the shell.
9. The indoor parallel flow microchannel heat exchanger of claim 1, wherein: the side edge of the shell is provided with a refrigerant inlet and outlet, a heat/cold storage medium inlet and outlet and a condensed water outlet; the refrigerant inlet and outlet of the shell are communicated with the parallel flow micro-channel, the heat/cold accumulation medium is communicated with the interior of the heat exchange shell, and the condensed water outlet is communicated with the condensed water tray.
10. An air-source heat pump system, characterized by: the heat exchanger comprises an outdoor heat exchanger, an indoor heat exchanger, a compressor, a throttle valve, a four-way reversing valve and a gas-liquid separator, wherein the indoor heat exchanger adopts an indoor parallel flow micro-channel heat exchanger as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220745509.9U CN217442004U (en) | 2022-04-01 | 2022-04-01 | Indoor parallel flow micro-channel heat exchanger and air source heat pump system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220745509.9U CN217442004U (en) | 2022-04-01 | 2022-04-01 | Indoor parallel flow micro-channel heat exchanger and air source heat pump system thereof |
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| CN217442004U true CN217442004U (en) | 2022-09-16 |
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| CN202220745509.9U Active CN217442004U (en) | 2022-04-01 | 2022-04-01 | Indoor parallel flow micro-channel heat exchanger and air source heat pump system thereof |
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