CN219797411U - Double-stage heat recovery fresh air purification unit - Google Patents
Double-stage heat recovery fresh air purification unit Download PDFInfo
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- CN219797411U CN219797411U CN202321139389.9U CN202321139389U CN219797411U CN 219797411 U CN219797411 U CN 219797411U CN 202321139389 U CN202321139389 U CN 202321139389U CN 219797411 U CN219797411 U CN 219797411U
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- heat exchanger
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- 238000011084 recovery Methods 0.000 title claims abstract description 33
- 238000004887 air purification Methods 0.000 title claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Central Air Conditioning (AREA)
Abstract
The utility model provides a two-stage heat recovery fresh air purification unit, which belongs to the technical field of fresh air heat recovery and comprises a unit shell, wherein an indoor air supply pipeline and an indoor return air pipeline are arranged at one end in the unit shell side by side, an outdoor air exhaust pipeline and an outdoor air inlet pipeline are arranged at the other end in the unit shell side by side, a plate-fin heat exchanger is also arranged in the unit shell, and the indoor air supply pipeline, the indoor return air pipeline, the outdoor air exhaust pipeline and the outdoor air inlet pipeline are all communicated with the plate-fin heat exchanger; the outdoor exhaust pipeline is internally provided with a first heat pipe heat exchanger, the outdoor air inlet pipeline is internally provided with a second heat pipe heat exchanger, and the first heat pipe heat exchanger is communicated with the second heat pipe heat exchanger. The utility model solves the problem of heat exchange and icing of the heat recovery core body when the outdoor temperature is extremely low in winter, improves the heat recovery efficiency of the unit and reduces the energy consumption of the unit.
Description
Technical Field
The utility model belongs to the technical field of fresh air heat recovery, and particularly relates to a two-stage heat recovery fresh air purification unit.
Background
The normal heat recovery unit generally adopts single-stage heat recovery, when outdoor environment temperature is low, the heat recovery core body can be frozen, the heat recovery efficiency of the unit is reduced, PTC electric heating is additionally arranged on a fresh air inlet side of partial products in the market, so that the fresh air temperature is improved, the heat recovery efficiency of the unit is ensured, and the energy consumption of the unit is increased by electric heating.
Disclosure of Invention
Aiming at the defects or shortcomings in the prior art, the utility model provides a two-stage heat recovery fresh air purification unit, which solves the problem that a heat recovery core body exchanges heat and freezes when the outdoor temperature is extremely low in winter, improves the heat recovery efficiency of the unit and reduces the energy consumption of the unit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the embodiment of the utility model provides a two-stage heat recovery fresh air purification unit, which comprises a unit shell, wherein an indoor air supply pipeline and an indoor return air pipeline are arranged at one end in the unit shell side by side, an outdoor air exhaust pipeline and an outdoor air inlet pipeline are arranged at the other end in the unit shell side by side, a plate-fin heat exchanger is also arranged in the unit shell, and the indoor air supply pipeline, the indoor return air pipeline, the outdoor air exhaust pipeline and the outdoor air inlet pipeline are all communicated with the plate-fin heat exchanger;
the outdoor exhaust pipeline is internally provided with a first heat pipe heat exchanger, the outdoor air inlet pipeline is internally provided with a second heat pipe heat exchanger, and the first heat pipe heat exchanger is communicated with the second heat pipe heat exchanger.
Further, the unit shell adopts a double-layer steel plate, polyurethane foaming heat insulation materials with the thickness of 25-30 mm are filled in the unit shell, and a micro-pore plate is embedded in the inner plate of the unit shell.
Further, the plate-fin heat exchanger is arranged among the indoor air supply pipeline, the indoor return air pipeline, the outdoor exhaust pipeline and the outdoor air inlet pipeline.
Further, an air feeder is arranged in the indoor air supply pipeline, an indoor air supply port is arranged at a position, corresponding to the indoor air supply pipeline, on the unit shell, and the air feeder is arranged opposite to the indoor air supply port.
Further, an air return filter is arranged in the indoor air return pipeline, and an indoor air return port is arranged at a position on the unit shell corresponding to the indoor air return pipeline.
Further, an exhaust fan is arranged in the outdoor exhaust pipeline, and an exhaust outlet of the exhaust fan is opposite to the first heat pipe heat exchanger.
Further, an outdoor air outlet is arranged at a position on the unit shell corresponding to the outdoor air exhaust pipeline, and an outdoor air exhaust outlet air valve is arranged at the outdoor air outlet.
Further, the outdoor air inlet pipeline is internally provided with a high-efficiency filter, a micro-static module and a fresh air metal filter, and the high-efficiency filter, the micro-static module and the fresh air metal filter are sequentially arranged.
Further, an outdoor air inlet is formed in a position, corresponding to the outdoor air inlet pipeline, of the unit shell, and an outdoor air inlet air valve is arranged at the outdoor air inlet.
Further, a block air valve is arranged between the outdoor exhaust pipeline and the outdoor air inlet pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the plate-fin heat exchanger and the heat pipe heat exchanger are arranged, the traditional electric heating is replaced by two-stage heat exchange, and the two-stage heat exchangers have no energy consumption, so that the heat recovery efficiency of the unit is improved, and the energy consumption of the unit is reduced;
2. according to the utility model, the outdoor exhaust port air valve, the outdoor inlet port air valve and the block air valve are arranged, so that the problem of heat exchange and icing of the heat recovery core body when the outdoor temperature is extremely low in winter is solved by controlling the opening and closing of the air valve in winter.
Drawings
FIG. 1 is a schematic diagram of a new wind turbine unit in an embodiment of the present utility model;
FIG. 2 is a summer operation state diagram of a fresh air handling unit according to an embodiment of the present utility model;
FIG. 3 is a diagram showing a winter operation state of the fresh air purifier set according to the embodiment of the present utility model;
1, an indoor air supply port; 2. a blower; 3. a unit housing; 4. a plate-fin heat exchanger; 5. an exhaust fan; 6. a first heat pipe exchanger; 7. an outdoor exhaust port air valve; 8. an indoor air return port; 9. a return air filter; 10. a second heat pipe exchanger; 11. a high-efficiency filter; 12. a micro-electrostatic module; 13. an outdoor inlet air valve; 14. a block air valve; 15. a connection channel; 16. a microplate; 17. fresh air metal filter.
Detailed Description
The disclosure is further illustrated by the following examples in conjunction with the drawings
Term interpretation section: the terms "mounted," "connected," "secured," and the like in this disclosure are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the terms are used in the present disclosure to be understood by those skilled in the art as specific meanings, and the terms are used in the present disclosure as specific meanings, as appropriate, by mechanical connection, electrical connection, direct connection, indirect connection via an intermediate medium, internal connection of two elements, or interaction relationship of two elements.
According to a typical implementation mode of the utility model, as shown in fig. 1, the two-stage heat recovery fresh air ventilator unit comprises a unit shell 3, wherein the unit shell 3 is made of double-layer steel plates, polyurethane foam heat insulation materials with the thickness of 25-30 mm are filled in the unit shell 3, and a micro-pore plate 16 is inlaid in an inner plate of the unit shell 3, so that the unit can be silenced.
One end is provided with indoor air supply pipeline and indoor return air pipeline side by side in the unit shell 3, and the other end is provided with outdoor exhaust pipeline and outdoor air inlet pipeline side by side, the inside board fin heat exchanger 4 that still is provided with of unit shell 3, board fin heat exchanger 4 sets up between indoor air supply pipeline, indoor return air pipeline, outdoor exhaust pipeline and outdoor air inlet pipeline, and indoor air supply pipeline, indoor return air pipeline, outdoor exhaust pipeline, outdoor air inlet pipeline all are linked together with board fin heat exchanger 4.
The indoor air supply pipeline is internally provided with an air feeder 2, an indoor air supply port 1 is arranged at a position, corresponding to the indoor air supply pipeline, on the unit shell 3, the air feeder 2 is arranged opposite to the indoor air supply port 1, and the air feeder 2 can send fresh air in the unit into a room from the indoor air supply port 1.
An air return filter 9 is arranged in the indoor air return pipeline, an indoor air return port 8 is arranged at a position, corresponding to the indoor air return pipeline, on the unit shell 3, indoor air enters from the indoor air return port 8 and enters the unit after being filtered by the air return filter 9.
The outdoor exhaust pipeline is internally provided with an exhaust fan 5 and a first heat pipe heat exchanger 6, an exhaust outlet of the exhaust fan 5 is opposite to the first heat pipe heat exchanger 6, an outdoor exhaust outlet is formed in a position, corresponding to the outdoor exhaust pipeline, on the unit shell 3, the exhaust fan 5 is close to the plate-fin heat exchanger 4, the first heat pipe heat exchanger 6 is close to the outdoor exhaust outlet, indoor air enters the first heat pipe heat exchanger 6 to perform secondary heat exchange after heat exchange of the plate-fin heat exchanger 4, and finally is exhausted from the outdoor exhaust outlet.
An outdoor exhaust outlet air valve 7 is arranged at the outdoor exhaust outlet and used for controlling the opening and closing of the outdoor exhaust outlet.
The high-efficiency filter 11, the micro-static module 12 and the fresh air metal filter 17 are arranged in the outdoor air inlet pipeline, the high-efficiency filter 11, the micro-static module 12 and the fresh air metal filter 17 are sequentially arranged, the internal and external air inlet can be effectively filtered, and the outdoor air inlet is formed in the position, corresponding to the outdoor air inlet pipeline, of the unit shell 3.
The outdoor air inlet pipeline is internally provided with a second heat pipe heat exchanger 10, the second heat pipe heat exchanger 10 is arranged at one end of the outdoor air inlet pipeline, which is close to the plate heat exchanger 4, and is positioned at one side of the high-efficiency filter 11, outdoor air enters the outdoor air inlet pipeline through an outdoor air inlet, and the outdoor air exchanges heat with the second heat pipe heat exchanger 10 after sequentially passing through the fresh air metal filter 17, the micro-static module 12 and the high-efficiency filter 11.
An outdoor air inlet air valve 13 is arranged at the outdoor air inlet and is used for controlling the opening and closing of the outdoor air inlet.
A connection channel 15 is arranged between the first heat pipe heat exchanger 6 and the second heat pipe heat exchanger 10, and copper pipes for connecting the first heat pipe heat exchanger 6 and the second heat pipe heat exchanger 10 are arranged in the connection channel 15.
A block air valve 14 is arranged between the outdoor exhaust pipeline and the outdoor air inlet pipeline, and the block air valve 14 is used for controlling the communication between the outdoor exhaust pipeline and the outdoor air inlet pipeline.
The temperature sensor is arranged in the unit, two temperature sensors are arranged, one temperature sensor is arranged between the plate-fin heat exchanger 4 and the second heat pipe heat exchanger 10 and used for measuring the temperature between the plate-fin heat exchanger and the second heat pipe heat exchanger (point A), the other temperature sensor is arranged on the shell of the plate-fin heat exchanger 4 and used for measuring the temperature of the shell of the plate-fin heat exchanger (point B), and the controller is respectively electrically connected with the outdoor exhaust port air valve 7, the outdoor inlet air valve 13, the partition air valve 14 and the two temperature sensors, and the opening and closing of the outdoor exhaust port air valve 7, the outdoor inlet air valve 13 and the partition air valve 14 are controlled through the temperatures detected by the two temperature sensors.
Principle of operation
In summer, as shown in fig. 2, high-temperature outdoor fresh air enters an outdoor air inlet pipeline through an outdoor air inlet valve, is simply filtered through a fresh air metal filter, is sterilized and deeply filtered through a micro-static module and a high-efficiency filter, and enters a second heat pipe heat exchanger after being sterilized and purified, liquid working medium in the second heat pipe heat exchanger absorbs heat in the outdoor fresh air, boils and evaporates, flows to a first heat pipe heat exchanger, and enters a plate-fin heat exchanger after preliminary cooling, exchanges heat with indoor low-temperature air discharged from the room, cools again, and is sent to the room by a blower after completion.
The low-temperature indoor air enters the return air filter through the indoor return air inlet to be simply filtered, the plate-fin heat exchanger performs second heat exchange with fresh air subjected to heat exchange through the second heat pipe heat exchanger, heat in the fresh air is absorbed to cool the fresh air, the indoor air subjected to heat exchange through the plate-fin heat exchanger is sent into the first heat pipe heat exchanger through the exhaust fan, cold energy in the indoor air is absorbed by liquid working medium in the first heat pipe heat exchanger to be condensed and liquefied, the cold energy is transferred to the fresh air through two-stage heat exchange through the indoor air subjected to two-stage temperature rising, energy recovery is completed, and the air is finally discharged to the outdoor.
In winter, as shown in fig. 3, low-temperature outdoor fresh air enters an outdoor air inlet pipeline through an outdoor air inlet valve, is simply filtered through a fresh air metal filter, is sterilized and deeply filtered through a micro-static module and a high-efficiency filter, and enters a second heat pipe heat exchanger after sterilization and purification, liquid working media in the second heat pipe heat exchanger absorb cold in the outdoor fresh air, condensate and liquefy, flow to a first heat pipe heat exchanger, and the air after preliminary temperature rise then enters a plate-fin heat exchanger to exchange heat with indoor discharged high-temperature air, and is sent to the room by a blower after the temperature rise is completed.
And the high-temperature indoor air enters the return air filter through the indoor return air inlet to be simply filtered, the plate-fin heat exchanger performs secondary heat exchange with fresh air subjected to heat exchange of the second heat pipe, cold energy in the fresh air is absorbed to heat the fresh air, the indoor air subjected to heat exchange of the plate-fin heat exchanger is sent into the first heat pipe heat exchanger by the exhaust fan, liquid working medium in the first heat pipe heat exchanger absorbs heat in indoor polluted air to boil and vaporize, the heat flows to the second heat pipe heat exchanger, the heat of the indoor air subjected to twice cooling is transferred to the fresh air by two-stage heat exchange, energy recovery is completed, and finally the fresh air is discharged outdoors.
Meanwhile, the temperature sensor detects the temperature between the plate-fin heat exchanger and the second heat pipe heat exchanger (point A) in the unit and the temperature on the surface (point B) of the plate-fin heat exchanger, when the temperature at the point B is close to the dew point temperature of indoor exhaust air, the air blocking valve is gradually opened, the outdoor exhaust air outlet valve and the outdoor air inlet valve are gradually closed, the indoor exhaust air and fresh air are utilized to mix to improve the fresh air temperature of the inlet of the unit, condensation and icing on the surface of the plate-fin heat exchanger are avoided, when the temperature at the point B is higher than the dew point temperature of indoor exhaust air, the air blocking valve is gradually closed, the outdoor exhaust air outlet valve and the outdoor air inlet valve are gradually opened, and the heat recovery efficiency of the unit is timely adjusted and guaranteed.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The double-stage heat recovery fresh air purification unit is characterized by comprising a unit shell, wherein an indoor air supply pipeline and an indoor return air pipeline are arranged at one end in the unit shell side by side, an outdoor air exhaust pipeline and an outdoor air inlet pipeline are arranged at the other end in the unit shell side by side, a plate-fin heat exchanger is further arranged in the unit shell, and the indoor air supply pipeline, the indoor return air pipeline, the outdoor air exhaust pipeline and the outdoor air inlet pipeline are all communicated with the plate-fin heat exchanger;
the outdoor exhaust pipeline is internally provided with a first heat pipe heat exchanger, the outdoor air inlet pipeline is internally provided with a second heat pipe heat exchanger, and the first heat pipe heat exchanger is communicated with the second heat pipe heat exchanger.
2. The two-stage heat recovery fresh air purification unit according to claim 1, wherein the unit shell is made of double-layer steel plates, polyurethane foam heat insulation materials with the thickness of 25-30 mm are filled in the unit shell, and micro-pore plates are embedded in the unit shell.
3. The dual-stage heat recovery fresh air purification unit according to claim 1, wherein the plate-fin heat exchanger is arranged between an indoor air supply pipeline, an indoor return air pipeline, an outdoor exhaust pipeline and an outdoor air inlet pipeline.
4. The two-stage heat recovery fresh air purification unit according to claim 1, wherein a blower is arranged in the indoor air supply pipeline, an indoor air supply port is arranged on the unit shell at a position corresponding to the indoor air supply pipeline, and the blower is arranged opposite to the indoor air supply port.
5. The two-stage heat recovery fresh air purification unit according to claim 1, wherein a return air filter is arranged in the indoor return air pipeline, and an indoor return air port is arranged on the unit shell at a position corresponding to the indoor return air pipeline.
6. The two-stage heat recovery fresh air purification unit according to claim 1, wherein an exhaust fan is further arranged in the outdoor exhaust pipeline, and an exhaust outlet of the exhaust fan is opposite to the first heat pipe heat exchanger.
7. The two-stage heat recovery fresh air purification unit according to claim 1, wherein an outdoor air outlet is formed in a position corresponding to an outdoor air exhaust pipeline on the unit housing, and an outdoor air exhaust outlet air valve is arranged at the outdoor air outlet.
8. The two-stage heat recovery fresh air purification unit according to claim 1, wherein the outdoor air inlet pipeline is internally provided with a high-efficiency filter, a micro-static module and a fresh air metal filter, and the high-efficiency filter, the micro-static module and the fresh air metal filter are sequentially arranged.
9. The two-stage heat recovery fresh air purification unit according to claim 1, wherein an outdoor air inlet is formed in a position corresponding to the outdoor air inlet pipeline on the unit housing, and an outdoor air inlet air valve is arranged at the outdoor air inlet.
10. The two-stage heat recovery fresh air purification unit according to claim 1, wherein a block damper is arranged between the outdoor exhaust duct and the outdoor intake duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321139389.9U CN219797411U (en) | 2023-05-10 | 2023-05-10 | Double-stage heat recovery fresh air purification unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321139389.9U CN219797411U (en) | 2023-05-10 | 2023-05-10 | Double-stage heat recovery fresh air purification unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219797411U true CN219797411U (en) | 2023-10-03 |
Family
ID=88187991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321139389.9U Active CN219797411U (en) | 2023-05-10 | 2023-05-10 | Double-stage heat recovery fresh air purification unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219797411U (en) |
-
2023
- 2023-05-10 CN CN202321139389.9U patent/CN219797411U/en active Active
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