CN216644451U - Fresh air handling unit and fresh air system - Google Patents
Fresh air handling unit and fresh air system Download PDFInfo
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- CN216644451U CN216644451U CN202122930060.1U CN202122930060U CN216644451U CN 216644451 U CN216644451 U CN 216644451U CN 202122930060 U CN202122930060 U CN 202122930060U CN 216644451 U CN216644451 U CN 216644451U
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- air
- air inlet
- flow path
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides a fresh air handling unit includes the casing, the filter unit, first fan subassembly, heat exchange unit, bypass channel and blast gate module, the casing has first air inlet and first gas outlet, first fan subassembly is used for driving gas to get into from first air inlet, discharge by first gas outlet after the filter unit, heat exchange unit includes first cavity, gas can carry out the heat exchange at heat exchange unit, bypass channel forms in the casing, and mutually independent with heat exchange unit, wherein, by first air inlet, first cavity and first gas outlet form first flow path, by first air inlet, bypass pipeline and first gas outlet form the second flow path, when blast gate module is in the open mode, open the second flow path, when blast gate module is in the closed mode, open first flow path and seal the second flow path. A fresh air system is also provided.
Description
Technical Field
The utility model relates to a fresh air handling unit and a fresh air system.
Background
In recent years, with the improvement of living standard of people, the requirements for indoor comfort and health are higher and higher. The use of fresh air systems has become more widespread and widespread. However, as the service life of the air conditioner is prolonged, people gradually find the later maintenance price of the fresh air system, particularly the heat exchange core, to be relatively high.
When the temperature is more suitable in spring and autumn, probably not have this demand of heat exchange to outdoor air, nevertheless in current new fan unit, the air still can pass through the heat exchange core after getting into new fan unit, can reduce the life of heat exchange core like this, promotes the maintenance cost in customer later stage.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a fresh air handling unit which can reduce damage to a heat exchange unit and prolong the service life thereof.
Above-mentioned fresh air handling unit includes: a housing having a first air inlet and a first air outlet; a filtration unit; the first fan assembly is used for driving gas to enter from the first gas inlet and to be discharged from the first gas outlet after passing through the filtering unit; a heat exchange unit including a first chamber, where gas can be heat exchanged; a bypass passage formed in the housing and independent of the heat exchange unit; and an air valve module; the first air inlet, the first chamber and the first air outlet form a first flow path, the first air inlet, the bypass pipeline and the first air outlet form a second flow path, the second flow path is opened when the air valve module is in an open state, and the first flow path is opened and the second flow path is closed when the air valve module is in a closed state.
In one or more embodiments, the damper module opens the second flow path and closes the first flow path when in an open state.
In one or more embodiments, the air valve control system further includes a first sensor, a second sensor and a control system, the first sensor is disposed at the first air inlet, and records a measured temperature as a first temperature, the second sensor is disposed at the first air outlet, and records a measured temperature as a second temperature, and by setting a threshold in the control system, when a difference between the first temperature and the second temperature exceeds the threshold, the control system outputs a command to close the air valve module.
In one or more embodiments, the filter unit includes a first filter screen and a second filter screen, the first filter screen is a primary filter screen, and the second filter screen is a high-efficiency filter screen.
In one or more embodiments, the first screen is disposed at a chamber outlet of the heat exchange unit.
In one or more embodiments, the fresh air handling unit further comprises a power module, and the power module supplies power to the fresh air handling unit.
In one or more embodiments, the heat exchanger further comprises a heat exchange core having the heat exchange unit.
In one or more embodiments, the fresh air handling unit further comprises: a second air inlet and a second air outlet disposed on the housing; the second fan assembly drives air to enter from the second air inlet and is discharged from the second air outlet; the heat exchange unit further comprises a second chamber, and a third flow path is formed by the second air inlet, the second chamber and the second air outlet; the first chamber and the second chamber are adjacent and independent from each other, and the first chamber and the second chamber can conduct heat.
Above-mentioned fresh air handling unit is through setting up the bypass passageway, and when the blast gate module was in the open mode, partial air current can pass through the bypass passageway and flow to first gas outlet through the first air inlet of second flow route, reduces the airflow that flows in first flow path through heat exchange unit, reduces the damage to heat exchange unit.
Another object of the present invention is to provide a fresh air system which can reduce the damage to the heat exchange unit and prolong the service life thereof.
The fresh air system comprises an outdoor air inlet, an indoor air inlet, an exhaust pipeline and the fresh air unit, wherein the first air inlet is communicated with the outdoor air inlet through the exhaust pipeline, and the first air outlet is communicated with the indoor air inlet through the exhaust pipeline.
The fresh air unit in the fresh air system is provided with the bypass channel, when the air valve module is in an open state, partial air flow can be sent to the indoor through the bypass channel and the second flow path, the air flow rate in the indoor through the heat exchange unit and the first flow path is reduced, and the damage to the heat exchange unit is reduced.
It is still another object of the present invention to provide a fresh air system that reduces damage to the heat exchanger core and extends its useful life.
The fresh air system comprises an indoor air inlet, an indoor air outlet, an outdoor air inlet, an outdoor air outlet, an exhaust pipeline and the fresh air unit, wherein the first air inlet is communicated with the outdoor air inlet through the exhaust pipeline, the first air outlet is communicated with the indoor air inlet through the exhaust pipeline, the second air inlet is communicated with the indoor air outlet through the exhaust pipeline, and the second air outlet is communicated with the outdoor air outlet through the exhaust pipeline.
The fresh air unit in the fresh air system is provided with the bypass channel, when the air valve module is in an open state, partial air flow can be conveyed to the indoor space through the bypass channel and the second flow path, the air flow entering the indoor space through the first flow path and passing through the heat exchange core body is reduced, and the service life of the heat exchange core body is prolonged.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
fig. 1 is a perspective view of a fresh air handling unit according to an embodiment.
Fig. 2 is a top view of a fresh air handling unit according to an embodiment.
Fig. 3 is a right side view of a fresh air handling unit according to an embodiment.
Fig. 4 is a left side view of a fresh air handling unit according to an embodiment.
Fig. 5 is a schematic view of the direction of airflow of the fresh air handling unit when the damper module is in an open state according to an embodiment.
Fig. 6 is a schematic view of the direction of airflow of the fresh air handling unit when the damper module is in a closed state according to an embodiment.
Fig. 7 is a schematic view showing the direction of air flow of the second flow path and the third flow path in the heat exchange core according to an embodiment.
Description of symbol mark
1 casing
2 first air intake
3 first air outlet
4 first fan assembly
5 bypass channel
6 Heat exchange Unit
7 blast gate module
8 second air inlet
9 second air outlet
10 second fan assembly
11 Filter unit
12. 13, 14 arrows
51 bypass channel inlet
61 chamber outlet
111 first sieve
112 second screen
Detailed Description
The present invention is further described in the following description with reference to specific embodiments and the accompanying drawings, wherein the details are set forth in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from those described herein, and it will be readily appreciated by those skilled in the art that the present invention can be implemented in many different forms without departing from the spirit and scope of the utility model. It is noted that these and other figures follow, given by way of example only, and are not drawn to scale, and should not be construed to limit the scope of the utility model as it may be claimed.
Two-way flow new trend unit is introduced the new trend from outdoor simultaneously and is discharged the room air through two fans at the course of the work to improve the room air quality, under partial weather condition, because there is the difference in temperature indoor and outdoor, flow to outdoor and flow to indoor two strands of air current from outdoor and can carry out the heat exchange in the heat exchange core of new trend unit, utilize the outdoor air of discharge to carry out heating or cooling to the air of sending into indoor, can retrieve the heat of the air of discharge to outdoor effectively.
However, when the air temperature is proper in spring and autumn, no obvious temperature difference exists between the indoor air and the outdoor air, the fresh air system only needs to circularly filter the air between the indoor air and the outdoor air, and in the existing fresh air unit, because the air flow flowing from the outdoor to the indoor air only passes through the flow path of the heat exchange core body, the air still passes through the heat exchange core body under the condition that the heat exchange is not actually needed, and the service life of the heat exchange core body can be shortened by the fresh air unit with the structure. Therefore, the fresh air handling unit with the bypass channel is provided, and the service life of the heat exchange core body can be prolonged.
The fresh air system comprises an outdoor air inlet, an indoor air inlet, an exhaust pipeline and a fresh air unit, wherein the outdoor air inlet is communicated with the fresh air unit through the exhaust pipeline to provide an air source for the fresh air unit, the fresh air unit filters air entering the fresh air unit, and the purified air is sent to the indoor space through the indoor air inlet through the exhaust pipeline.
As shown in fig. 1 to 4, the fresh air handling unit includes a first air inlet 2, a first air outlet 3, a first fan assembly 4 and a filter unit 11, the first air inlet 2 and the first air outlet 3 are provided on a housing 1 of the fresh air handling unit, the first fan assembly 4 is connected to the first air outlet 3 for driving air to enter the fresh air handling unit from the first air inlet 2, the air is filtered by the filter unit 11, and the filtered air is discharged from the first air outlet 3 to complete air supply.
The fresh air handling unit further comprises a heat exchange unit 6, a bypass channel 5 and an air valve module 7, air can be subjected to heat exchange in the heat exchange unit 6, the air valve module 7 is used for controlling the opening and closing of the bypass channel 5, the heat exchange unit 6 and the bypass channel 5 are arranged independently, two air flow paths which are not communicated are formed, and therefore air flow passing through the bypass channel 5 cannot enter the heat exchange unit 6. In one embodiment shown in fig. 1, a bypass line is provided on one side of the fresh air handling unit, adjacent to and separate from the heat exchange unit 6, from which bypass channel 5 is formed.
Specifically, two gas flow paths are formed inside the fresh air handling unit: the heat exchange unit 6 comprises a first chamber and a first flow path formed by a first air inlet 2, the first chamber and a first air outlet 3, wherein air in the first flow path enters the fresh air handling unit from the first air inlet 2, is subjected to heat exchange in the first chamber, and is discharged from the first air outlet 3 after being filtered; and a second flow path formed by the first gas inlet 2, the bypass passage 5 and the first gas outlet 3, wherein gas directly enters from the first gas inlet 2, is filtered and then is discharged from the first gas outlet 3 without heat exchange in the second flow path.
In one embodiment, the first air inlet 2 is communicated with the outdoor air inlet, the first air outlet 3 is communicated with the indoor air inlet, in the case where there is a difference between the outdoor temperature and the indoor temperature, taking the case where the outdoor temperature is lower than the indoor temperature as an example, under the temperature condition, the air valve module 7 is in a closed state to open the first flow path and close the second flow path, the flow path of air in the first flow path is shown by an arrow 12, after the outdoor air enters the fresh air handling unit from the first air inlet 2, only through the first flow path to the first gas outlet 3, as can be seen in particular in fig. 5, the gas enters the heat exchange unit 6 as indicated by the arrow 12, it is heated in the first chamber, then leaves the heat exchange unit 6, is filtered by the filtering unit 11 and finally is sent to the room by the first air outlet 3;
under the condition that the outdoor temperature and the indoor temperature are not obviously different, the outdoor air can be directly sent to the indoor space at the outdoor temperature without heat exchange, under the temperature condition, the air valve module 7 is in an open state to open the second flow path, the flow path of air in the second flow path is shown by an arrow 13, after the outdoor air enters the fresh air handling unit from the first air inlet 2, the outdoor air can also pass through the second flow path to the first air outlet 3 in addition to the first flow path, specifically referring to fig. 5, the air enters the bypass channel 5 in the direction shown by the arrow 13, then the air is directly filtered by the filtering unit 11, and the purified air is sent to the indoor space by the first air outlet 3.
In the embodiment shown in fig. 1, the damper module 7 is arranged in the bypass duct 5 and when it is in the open state, part of the gas can be routed through the bypass duct 5 to the outside of the chamber through the second flow path, reducing the amount of gas flow through the heat exchange unit 6 into the chamber through the first flow path. The position where the damper module 7 is provided is not limited to this embodiment, and may be provided at other positions, for example, at the bypass passage inlet 51, as long as the opening and closing of the bypass passage 5 can be controlled by the damper module 7.
Meanwhile, the specific structure of the damper module 7 is not limited, for example, when disposed in the bypass passage 5, the damper module 7 may have a louver-like structure, and the bypass passage 5 is opened or closed by the rotary blades; or when provided at the bypass passage inlet 51, the damper module 7 may be a structure including a cover plate hinged to the housing 1, and the bypass passage 5 is opened or closed by rotating the cover plate.
In another embodiment different from that shown in the figures, when the damper module 7 is in the open state, the second flow path is opened and the first flow path is closed, the amount of air flow in the first flow path is further reduced, and outdoor air can only be sent to the indoor through the second flow path.
The opening and closing of the air valve module 7 depend on whether obvious temperature difference exists indoors or outdoors, and whether obvious temperature difference exists indoors or outdoors can be judged manually or controlled in other modes. In one embodiment, the fresh air handling unit further comprises a first sensor, a second sensor and a control system, the indoor and outdoor temperatures are monitored in real time through the sensors and are transmitted to the control system, the first sensor is arranged at the first air inlet 2, the temperature measured by the first sensor is recorded as a first temperature, the second sensor is arranged at the first air outlet 3, the temperature measured by the second sensor is recorded as a second temperature, a threshold value is set in the control system, and when the difference value between the first temperature and the second temperature exceeds the threshold value, the control system outputs an instruction to close the air valve module 7 to close the second flow path; when the difference value between the first temperature and the second temperature is within the threshold value range, the air valve module is in an open state, and the blade position of the air valve module 7 can be adjusted according to the difference value so as to adjust the air flow in the second flow path, so that more intelligent control is realized. In other embodiments, the opening and closing of the damper module 7 may be controlled by a manual control system directly according to the user's needs.
As shown in fig. 5, the filter unit 11 of the fresh air handling unit includes a first filter screen 111 and a second filter screen 112, the first filter screen 111 is a primary filter screen, and primarily filters the air, the second filter screen 112 is a high-efficiency filter screen, and further removes harmful substances in the air, so that the purified air meets the safety standard of indoor air. The primary and high efficiency screens may be selected with reference to different standards, for example in one embodiment the primary screen is a screen of grade G4 according to european standard EN 779:2002 air filter unit for general ventilation, the high efficiency screen is a screen of grade h10 or higher, and in another embodiment the primary screen is a screen of grade c3 according to chinese standard GB/T14295 air filter unit.
In one embodiment, the filtering unit 11 further includes a middle-efficiency filter screen disposed between the first filter screen 111 and the second filter screen 112, and the multi-layer filter screen can further improve the filtering effect of the filtering unit 11.
In the embodiment shown in fig. 5, the first filter screen 111 is disposed at the chamber outlet 61 of the first chamber 6, the second filter screen 112 is disposed at the inlet of the first fan assembly 4, when the damper module 7 is in an open state, the gas in the first flow path is discharged from the heat exchange unit 6 and then filtered through the first filter screen 111 and the second filter screen 112, the gas in the second flow path is directly filtered through the second filter screen 112, and the requirement of air quality can also be met. In other embodiments, the screens at different stages in the filtering unit 11 may be disposed at other positions, for example, the first screen 111 is disposed at the first air inlet, and the outdoor air is filtered before entering the heat exchange unit 6 or the bypass channel 5, so that the air in the first flow path and the air in the second flow path may be filtered in multiple stages, so as to improve the filtering effect and facilitate the inside of the fresh air handling unit to be kept clean.
In an embodiment, the fresh air handling unit is a bidirectional flow fresh air handling unit, the fresh air handling system further includes an indoor air outlet and an outdoor air outlet, the fresh air handling unit is communicated with the indoor air outlet and the outdoor air outlet through an exhaust pipeline, specifically, as shown in fig. 6, the fresh air handling unit further includes a second air inlet 8, a second air outlet 9 and a second fan assembly 10, the second air inlet 8 and the second air outlet 9 are both opened on the casing 1, the second air inlet 8 is communicated with the indoor air outlet, the second air outlet 9 is communicated with the outdoor air outlet, the second fan assembly 10 is connected with the second air outlet 9, and is used for driving indoor air to enter the fresh air handling unit from the second air inlet 8, and the indoor air is exhausted to the outside through the second air outlet 9, and the exhaust is completed.
Two-way flow new fan group is including the heat exchange core that has heat exchange unit 6, and heat exchange unit 6 includes the second cavity, because the second cavity is adjacent and mutual independence sets up with first cavity, the inside another gas flow path that still is formed with of new fan group: a third flow path formed by the second air inlet 8, the second chamber and the second air outlet 9, a flow path of the gas in the third flow path is shown as an arrow 14, meanwhile, since the first chamber and the second chamber can conduct heat, referring to fig. 6 and 7, after the gas in the third flow path enters the fresh air handling unit from the second air inlet 8 in the direction shown by the arrow 14, the gas in the third flow path exchanges heat with the gas in the first flow path in the first chamber in the second chamber, and then is discharged from the second air outlet 9.
In the case where the outdoor temperature is different from the indoor temperature, taking the case where the outdoor temperature is lower than the indoor temperature as an example, under such temperature conditions, the temperature of the gas in the third flow path from the indoor to the outdoor is higher than the temperature of the gas in the first flow path from the outdoor to the indoor, and since the first chamber and the second chamber can conduct heat and have a large contact area therebetween, the gas in the first flow path can be heated by the gas in the third flow path in the heat exchange unit 6, and the heat in the exhaust gas to be discharged to the outdoor is effectively recovered, so that the fresh air to be sent to the indoor has a more appropriate temperature.
In the embodiment shown in fig. 6, a first filter 111, i.e. a primary filter, is disposed at the chamber outlet 61 of the second chamber, and filters the exhaust gas discharged to the outside, so as to reduce the influence on the environment. In other embodiments, the gas may be directly discharged to the outside of the chamber without providing a filter screen at the second chamber outlet 61.
In the above embodiment, the bidirectional flow fresh air handling unit is taken as an example, and the heat exchange core is provided to recover heat from the gas discharged from the room to the outside, thereby providing a heat source capable of exchanging heat with the gas in the first flow path.
In an embodiment, the fresh air handling unit further includes a power module for supplying power to the fresh air handling unit, and specifically, the power module includes a first power module and a second power module for supplying power to the first fan assembly 4 and the second fan assembly 10, respectively, and the first power module and the second power module may be installed independently from each other, or may be an integrated power module to make the fresh air handling unit more compact in structure. In other embodiments, the fresh air handling unit may be powered by an external power supply without providing a power supply module.
Above-mentioned fresh air unit is through setting up bypass channel 5, and when blast gate module 7 was in the open mode, partial air current can pass through bypass channel, send to indoor through the second flow path, reduced through the heat exchange core, got into indoor airflow through first flow path, prolonged the life of heat exchange core.
Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the utility model, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.
Claims (10)
1. A fresh air handling unit, comprising:
a housing having a first air inlet and a first air outlet;
a filtration unit;
the first fan assembly is used for driving gas to enter from the first gas inlet and to be discharged from the first gas outlet after passing through the filtering unit;
a heat exchange unit including a first chamber where gas can be heat exchanged;
a bypass passage formed in the housing and independent of the heat exchange unit; and
an air valve module;
the first air inlet, the first chamber and the first air outlet form a first flow path, the first air inlet, the bypass pipeline and the first air outlet form a second flow path, the second flow path is opened when the air valve module is in an open state, and the first flow path is opened and the second flow path is closed when the air valve module is in a closed state.
2. The fresh air handling unit of claim 1, wherein the damper module opens the second flow path and closes the first flow path when in an open state.
3. The fresh air handling unit as claimed in claim 1, further comprising a first sensor disposed at the first air inlet to record a measured temperature thereof as a first temperature, a second sensor disposed at the first air outlet to record a measured temperature thereof as a second temperature, and a control system,
by setting a threshold in the control system, the control system outputs a command to close the damper module when the difference between the first temperature and the second temperature exceeds the threshold.
4. The fresh air handling unit as claimed in claim 1, wherein the filter unit includes a first filter and a second filter, the first filter is a primary filter, and the second filter is a high efficiency filter.
5. The fresh air handling unit of claim 4 wherein the first screen is disposed at an outlet of the chamber of the heat exchange unit.
6. The fresh air handling unit of claim 1, further comprising a power module that provides power to the fresh air handling unit.
7. The fresh air handling unit as claimed in claim 1, further comprising a heat exchange core having the heat exchange unit.
8. The fresh air handling unit of claim 7, further comprising:
a second air inlet and a second air outlet disposed on the housing; and
the second fan assembly drives air to enter from the second air inlet and is discharged from the second air outlet;
the heat exchange unit further comprises a second chamber, and a third flow path is formed by the second air inlet, the second chamber and the second air outlet;
the first chamber and the second chamber are adjacent and independent from each other, and the first chamber and the second chamber can conduct heat.
9. The fresh air system is characterized by comprising an outdoor air inlet, an indoor air inlet, an exhaust pipeline and the fresh air handling unit as claimed in any one of claims 1 to 6, wherein the first air inlet is communicated with the outdoor air inlet through the exhaust pipeline, and the first air outlet is communicated with the indoor air inlet through the exhaust pipeline.
10. The fresh air system is characterized by comprising an indoor air inlet, an indoor air outlet, an outdoor air inlet, an outdoor air outlet, an exhaust pipeline and the fresh air handling unit as claimed in claim 8, wherein the first air inlet is communicated with the outdoor air inlet through the exhaust pipeline, the first air outlet is communicated with the indoor air inlet through the exhaust pipeline, the second air inlet is communicated with the indoor air outlet through the exhaust pipeline, and the second air outlet is communicated with the outdoor air outlet through the exhaust pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122930060.1U CN216644451U (en) | 2021-11-26 | 2021-11-26 | Fresh air handling unit and fresh air system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122930060.1U CN216644451U (en) | 2021-11-26 | 2021-11-26 | Fresh air handling unit and fresh air system |
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| CN216644451U true CN216644451U (en) | 2022-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875780A (en) * | 2022-11-11 | 2023-03-31 | 珠海格力电器股份有限公司 | Fresh air handling unit and control method thereof |
| CN117847675A (en) * | 2024-03-08 | 2024-04-09 | 苏州贝昂智能科技股份有限公司 | Total heat exchange equipment |
-
2021
- 2021-11-26 CN CN202122930060.1U patent/CN216644451U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115875780A (en) * | 2022-11-11 | 2023-03-31 | 珠海格力电器股份有限公司 | Fresh air handling unit and control method thereof |
| CN117847675A (en) * | 2024-03-08 | 2024-04-09 | 苏州贝昂智能科技股份有限公司 | Total heat exchange equipment |
| CN117847675B (en) * | 2024-03-08 | 2024-05-31 | 苏州贝昂智能科技股份有限公司 | Total heat exchange equipment |
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