CN112682868A - Fan unit with split type dehydrating unit - Google Patents
Fan unit with split type dehydrating unit Download PDFInfo
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- CN112682868A CN112682868A CN202011585483.8A CN202011585483A CN112682868A CN 112682868 A CN112682868 A CN 112682868A CN 202011585483 A CN202011585483 A CN 202011585483A CN 112682868 A CN112682868 A CN 112682868A
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Abstract
The invention provides a fan unit, which comprises fan equipment of a fresh air system, wherein the fan equipment comprises: a housing having an outdoor air inlet and an indoor air outlet; a filter module located within the housing; a fresh air blower within the housing configured to direct air entering the housing into an airflow that passes through the filter module and then exits to the exterior of the housing via the indoor air outlet; the evaporator is positioned in an air path between the filtering module and the indoor air outlet; and a heater positioned in an air path between the evaporator and the indoor outlet, wherein the evaporator is configured to form a refrigerant circuit together with a compressor, a condenser, and a throttling element positioned outside the casing.
Description
Technical Field
The present invention relates generally to a fan unit for a fresh air system, and more particularly, to a fan unit having a dehumidification device.
Background
With the increasing improvement of living standard and the gradual deterioration of air quality, the demand of people on the air quality of living environment is higher, and the demand of air purification equipment such as an air purifier, a fresh air system and the like is gradually increased. The fresh air system is generally applied to families gradually due to the advantages of high purification efficiency, good purification effect and the like.
With the development of technology, on the basis that a fan unit requiring a fresh air system can provide fresh and clean air indoors, it is also desirable that the fan unit can have a dehumidification function so as to provide fresh and dry air indoors. In order to achieve the purpose, a dehumidifying device is generally arranged in the existing fan set for the fresh air system.
The dehumidification device generally adopts a vapor compression dehumidification method. The dehumidification device mainly comprises: compressor, condenser, throttling element, evaporimeter. The air dehumidification process involves the internal circulation of refrigerant inside the dehumidification device and the external circulation of air in the fresh air system.
In the internal circulation process of the refrigerant in the dehumidifying device, high-temperature and high-pressure refrigerant gas is discharged through the operation of the compressor, the high-temperature and high-pressure refrigerant gas enters the condenser and is cooled to become low-temperature and high-pressure liquid, the low-temperature and low-pressure gas-liquid two-phase body is obtained through interception and depressurization of the throttling element, the low-temperature and low-pressure gas-liquid two-phase body is evaporated and absorbs heat through the evaporator, and finally the low-temperature and low-pressure gas is. The operation is repeated in a circulating way.
In the external circulation process of air in a fresh air system, humid air firstly passes through surface coolers such as a cold water coil or a fluorine coil, the surface temperature of the surface coolers is lower than the dew point temperature of the humid air, then the humid air can form condensed water, and the moisture content and the temperature are reduced. At the moment, the relative humidity of the air can rise, and then the air is heated by absorbing heat through the condenser, so that the temperature rises, the moisture content is unchanged, the relative humidity is reduced, and the wet air is reduced in absolute humidity and relative humidity. Under the condition of normal startup, wet air is sucked from the air inlet through the operation of the fan, then passes through the evaporator (condensed water is formed on the evaporator, the moisture content and the temperature of the air are reduced), passes through the condenser (the heat emitted by the condenser is absorbed, the air is heated, the temperature is increased, the moisture content is unchanged, and the relative humidity is reduced), and blows out dry air from the air outlet.
The dehumidifying device with the compressor, the condenser, the throttling element and the evaporator is arranged in the fan unit of the fresh air system, so that the humidity of the fresh air provided by the fresh air system can be effectively reduced.
However, since the fan units of the fresh air system are generally installed in a very narrow space of an indoor ceiling, it is generally desirable that the fan units have a small volume. However, the addition of the dehumidifying device increases the volume of the fan unit, resulting in high requirements for the pipe arrangement. In addition, since the noise of the compressor in the dehumidifying apparatus is large, it is difficult to control the total noise of the fan assembly to a satisfactory range.
Disclosure of Invention
At least one object of the present invention is to provide a fan unit having a dehumidifying apparatus, which can reduce the volume and noise of the fan unit.
The application provides a fan unit, fan unit includes the fan equipment of new trend system, wherein, fan equipment includes:
a housing having an outdoor air inlet and an indoor air outlet;
a filter module located within the housing;
a fresh air blower within the housing configured to direct air entering the housing into an airflow that passes through the filter module and then exits to the exterior of the housing via the indoor air outlet;
the evaporator is positioned in an air path between the filtering module and the indoor air outlet;
a heater positioned in an air path between the evaporator and the indoor air outlet,
wherein the evaporator is configured to form a refrigerant circuit with a compressor, a condenser, and a throttling element located outside the housing.
According to at least one embodiment of the present application, wherein the heater is an electric heater.
According to at least one embodiment of the present application, wherein the heater is a PTC heater.
According to at least one embodiment of the present application, wherein the evaporator has a water collecting tray below for receiving condensed water formed on the evaporator.
According to at least one embodiment of this application, wherein, fan unit still includes the off-premises station, the off-premises station includes the compressor, the condenser, the choke element, the evaporimeter, the compressor, the condenser, the choke element constitutes dehydrating unit with the heater together.
According to at least one embodiment of the present application, wherein the evaporator is a fin heat exchanger.
According to at least one embodiment of the present application, wherein the fan apparatus is configured to be installed in an indoor space.
According to at least one embodiment of the present application, the housing further has an indoor air inlet communicated to the air path between the outdoor air inlet and the filter module.
According to at least one embodiment of the present application, wherein the fan assembly is operable in an internal circulation mode in which the outdoor air intake is closed, the fresh air fan directs air entering the housing via the indoor air intake into an air flow passing through the filter module and then exiting the housing exterior via the indoor air outlet.
According to at least one embodiment of the present application, wherein,
the fan equipment also comprises an exhaust fan, and the shell is also provided with an indoor air inlet and an outdoor air outlet;
the exhaust fan is located within the enclosure and is configured to direct air entering the enclosure via the indoor air intake to form an airflow that is exhausted to an exterior of the enclosure via the outdoor air outlet.
In the fan unit provided by the invention, parts such as a compressor, a condenser, a throttling element and the like are removed, so that the volume of indoor fan equipment can be smaller. In addition, since the compressor, which is relatively noisy, is removed from the fan assembly, indoor noise can be reduced. Because the modules such as the compressor, the condenser, the throttling element and the like are directly placed outdoors, the maintenance is simpler, and the risk of refrigerant leakage is reduced.
Drawings
The above features, technical characteristics, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, in conjunction with the accompanying drawings. The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1 illustrates an internal schematic view of an exemplary wind turbine assembly, according to an embodiment of the present disclosure;
FIG. 2 illustrates an internal schematic view of yet another exemplary wind turbine assembly, according to an embodiment of the present disclosure;
FIG. 3 illustrates an internal schematic view of another exemplary wind turbine assembly, according to an embodiment of the present disclosure.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
According to one embodiment of the invention, a fan assembly for a fresh air system is provided. In the fan unit, the whole dehumidifying device is not arranged in the fan unit, but a split dehumidifying device is adopted. That is, only the evaporator of the dehumidifier is disposed inside the fan unit, and the compressor, the condenser, and the throttling element of the dehumidifier are separated from the evaporator and moved to the outside of the fan unit, so that the compressor, the condenser, and the throttling element can be moved to the outside. Further, a heater (e.g., an electric heater such as a PTC heater) is used instead of the heating function of the condenser.
Because the fan set is provided with no parts such as a compressor, a condenser, a throttling element and the like, the indoor fan equipment can be smaller in volume. In addition, since the compressor, which is relatively noisy, is removed from the fan assembly, indoor noise can be reduced.
Because the modules such as the compressor, the condenser, the throttling element and the like are directly placed outdoors, the maintenance is simpler, and the risk of refrigerant leakage is reduced.
The fan assembly of the present disclosure is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, a fan assembly of a fresh air system according to an embodiment of the present invention includes: a blower device 100 installed indoors and in gas communication with an outdoor environment through a duct passing through a wall W; and an outdoor unit 18.
As shown in fig. 1, the blower apparatus 100 includes:
the air conditioner comprises a shell 12, wherein the shell 12 is provided with an outdoor air inlet 4, an indoor air inlet 17 and an indoor air outlet 11, an air valve 5 is arranged in the outdoor air inlet 4, and the air valve 5 can control the opening and closing of the outdoor air inlet 4;
a filter module comprising a primary filter 7 and a high efficiency HEPA filter 8 located within a housing 12;
a fresh air blower 6 located within the housing 12 and configured to direct air entering the housing 12 from, for example, the outdoor air inlet 4 into an airflow passing through the primary filter 7 and the high efficiency HEPA filter 8 in sequence and then exiting to the outside of the housing 12 via the indoor air outlet 11, thereby providing filtered air to the room;
the evaporator 9 is positioned in an air path between the filtering module and the indoor air outlet 11;
and a PTC heater 10 located in an air passage between the evaporator 9 and the indoor outlet 11.
As shown in fig. 1, the outdoor unit 18 includes a compressor 1, a condenser 2, and a throttle member 3. The evaporator 9 in the fan apparatus 100 is fluidly connected to the compressor 1, the condenser 2, and the throttle element 3 via a copper pipe 15, and together form a refrigerant circuit of the dehumidifying device. By placing the compressor 1, the condenser 2, and the throttling element 3 in the outdoor unit 18, the fan apparatus 100 can be reduced in size and noise. The heating function of the condenser 2 transferred to the outdoor unit 18 is performed by the PTC heater 10 instead thereof.
As shown in fig. 1, the evaporator 9 has a water collecting tray 13 below for receiving condensed water formed on the evaporator 9. The sump 13 also has therein a drain pump 14 for discharging the condensed water collected in the sump 13 to the outside through a drain pipe 16.
According to one embodiment of the present application, the evaporator 9 may be a fin heat exchanger, for example. In other embodiments, the evaporator 9 may take other forms of heat exchanger.
In addition, according to an embodiment of the present application, the housing 12 of the blower device 100 further has an indoor air inlet 17, so that the function of internal circulation can be realized in a single-channel fresh air system. As shown in fig. 1, the indoor air inlet 17 communicates with the air path between the outdoor air inlet 4 and the filter module (including the primary filter 7 and the high efficiency HEPA filter 8). The fan assembly shown in figure 1 is capable of operating in an internal circulation mode.
In the internal circulation mode, the outdoor air inlet 4 is closed, and the fresh air blower 6 directs air entering the housing 12 via the indoor air inlet 17 to form an air flow that passes through the primary filter 7 and the high efficiency HEPA filter 8, and then exits to the outside of the housing (i.e., to the indoor) via the indoor air outlet 11.
The fan unit can also work in the new trend mode. In the fresh air mode, the outdoor air inlet 4 is opened, the indoor air inlet 17 is closed, and the fresh air blower 6 guides air entering the housing 12 through the outdoor air inlet 4 to form an air flow passing through the primary filter screen 7 and the high efficiency HEPA filter screen 8 and then being discharged to the outside of the housing (i.e., the discharged indoor) through the indoor air outlet 11.
In both the internal circulation mode and the fresh air mode, air passes through the evaporator 9 and the PTC heater 10 in sequence after passing through the primary filter 7 and the high efficiency HEPA filter 8 and before being discharged to the outside of the housing through the indoor air outlet 11. In the case where the dehumidifying apparatus is turned on, the combination of the evaporator 9 and the PTC heater 10 can effectively reduce the humidity of the air flowing therethrough, thereby discharging fresh and dry air from the indoor air outlet 11.
When the indoor humidity greatly exceeds the set value, the controller can make the fresh air system enter the internal circulation mode and turn on the evaporator 9 and the PTC heater 10 of the dehumidifying device. Turning on the evaporator 9 and the PTC heater 10 of the dehumidifying apparatus in the inner circulation mode can reduce the humidity of the air more rapidly than turning on the evaporator 9 and the PTC heater 10 of the dehumidifying apparatus in the fresh air mode. At this time, the outdoor air inlet 4 is closed, the indoor air inlet 17 is opened, the evaporator 9 and the PTC heater 10 are opened, the indoor wet air is sucked into the casing 12 of the fan device 100 from the indoor air inlet 17, is filtered by the primary filter 7 and the high-efficiency HEPA filter 8, enters the evaporator 9 to be cooled, exchanges heat with the refrigerant liquid from the outdoor unit 18 in the evaporator 9, is evaporated and cooled, then flows through the PTC heater 10 to be heated, and is discharged to the outside of the casing (i.e., discharged to the indoor) through the indoor air outlet 11 after dehumidification is completed. The water condensed in the evaporator 9 is accumulated in the sump 13 and is discharged to the outside of the room through the drain pipe 16 by the drain pump 14.
When the humidity of the air is not high and the dehumidification function is not required, the evaporator 9 and the PTC heater 10 of the dehumidification device can be turned off in both the internal circulation mode and the fresh air mode.
Further, since the evaporator 9 and the PTC heater 10 in the present application can be independently controlled, the fan apparatus 100 according to the present application also has a cooling function. When the indoor space needs to be refrigerated, the fan device 100 of the controllable fresh air system is in a fresh air mode or an internal circulation mode, the evaporator 9 is opened on the basis, and the PTC heater 10 is closed, so that the refrigeration function of the air conditioner can be realized, and the refrigeration of the indoor air conditioner is assisted.
In the above, the technical solution of the present application is described by taking a single-channel fresh air system as an example. In fact, the split type dehumidifying device provided by the application is also suitable for a dual-channel fresh air system. A fan apparatus 200 for a dual channel fresh air system provided according to an embodiment of the present application is described below with reference to fig. 2. In fig. 2, similar parts are denoted by the same reference numerals. The fan apparatus 200 shown in fig. 2 is substantially identical in structure to the fan apparatus 100 shown in fig. 1, except that the fan apparatus 200 is configured for a two-channel fresh air system, which further has an exhaust fan 61. The blower device 200 has an outdoor air inlet 4, an indoor air inlet 17, an outdoor air outlet 27, and an indoor air outlet 11 in a housing 12. The outdoor air inlet 4 is provided with an air valve 5, and the air valve 5 can control the opening and the closing of the outdoor air inlet 4. The exhaust fan 61 is located within the housing 12 and is configured to direct air entering the housing 12 via the indoor air intake 17 into an air stream that is exhausted to the outside of the housing 12 via the outdoor air outlet 27. The dotted lines in fig. 2 show the general flow path of the air.
This fan apparatus 200 further includes:
a heat exchange module J and a filter module F;
a fresh air fan 62 located within the housing 12 and configured to direct air entering the housing 12 from, for example, the outdoor air inlet 4 into an air flow passing through the heat exchange module J and the filter module F in order and then exiting to the outside of the housing 12 via the indoor air outlet 11, thereby providing filtered air to the indoor space;
the evaporator 9 is positioned in an air path between the filtering module J and the indoor air outlet 11;
and a PTC heater 10 located in an air passage between the evaporator 9 and the indoor outlet 11.
As shown in fig. 2, the outdoor unit 18 includes a compressor 1, a condenser 2, and a throttle member 3. The evaporator 9 inside the fan apparatus 200 is fluidly connected to the compressor 1, the condenser 2, and the throttle element 3 via a copper pipe 15, and together constitute a refrigerant circuit of the dehumidifying device. By placing the compressor 1, the condenser 2, and the throttling element 3 in the outdoor unit 18, the fan apparatus 200 can be reduced in size and noise. The heating function of the condenser 2 transferred to the outdoor unit 18 is performed by the PTC heater 10 instead thereof.
As shown in fig. 2, the evaporator 9 has a water collecting tray 13 below for receiving condensed water formed on the evaporator 9. The sump 13 also has therein a drain pump 14 for discharging the condensed water collected in the sump 13 to the outside through a drain pipe 16.
When the fan apparatus 200 of the fresh air system is turned on, air passes through the evaporator 9 and the PTC heater 10 in sequence after passing through the heat exchange module J and the filter module F and before being discharged to the outside of the case 12 through the indoor air outlet 11. In the case where the dehumidifying apparatus is turned on, the combination of the evaporator 9 and the PTC heater 10 can effectively reduce the humidity of the air flowing therethrough, thereby discharging fresh and dry air from the indoor air outlet 11.
The evaporator 9 and the PTC heater 10 of the dehumidifying apparatus can also be turned off when the air humidity is not high and the dehumidifying function is not required.
When the indoor space needs to be refrigerated, the evaporator 9 can be opened and the PTC heater 10 can be closed, so that the refrigeration function of the air conditioner can be realized, and the refrigeration of the indoor air conditioner is assisted.
Besides the functions of humidification and refrigeration, the fan unit according to the application can also have a heating function. As shown in fig. 3, an embodiment of a fan assembly with heating function is shown. The fan unit has substantially the same structure as the fan unit shown in fig. 1, and is different from the fan unit in that a four-way reversing valve 19 (which may be simply referred to as a four-way valve) is further provided in the outdoor unit 18. The four-way valve 19 is connected in the refrigerant circuit of the dehumidifying apparatus for switching the functions of the evaporator 9 and the condenser 2 to each other, thereby allowing the dehumidifying apparatus to operate in a heating mode. When the dehumidifying apparatus is operated in the heating mode, the four-way valve 19 is connected in such a manner that the condenser 2 absorbs heat and the evaporator 9 dissipates heat, so that the air passing through the evaporator 9 is heated, thereby supplying the heated air to the room through the indoor outlet port 11.
The fan set with the heating function shown in fig. 3 is also suitable for a dual-channel fresh air system.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.
Claims (10)
1. A fan assembly comprising a fan device of a fresh air system, wherein the fan device comprises:
a housing having an outdoor air inlet and an indoor air outlet;
a filter module located within the housing;
a fresh air blower within the housing configured to direct air entering the housing into an airflow that passes through the filter module and then exits to the exterior of the housing via the indoor air outlet;
the evaporator is positioned in an air path between the filtering module and the indoor air outlet;
a heater positioned in an air path between the evaporator and the indoor air outlet,
wherein the evaporator is configured to form a refrigerant circuit with a compressor, a condenser, and a throttling element located outside the housing.
2. The fan assembly of claim 1, wherein the heater is an electric heater.
3. The fan assembly of claim 2, wherein the heater is a PTC heater.
4. The fan assembly of claim 1, wherein the evaporator has a drip pan below it for receiving condensate water formed on the evaporator.
5. The fan assembly according to claim 1, wherein the fan assembly further comprises an outdoor unit including the compressor, the condenser, and the throttling element, and the evaporator, the compressor, the condenser, the throttling element, and the heater together constitute a dehumidifying device.
6. The fan assembly of claim 1, wherein the evaporator is a finned heat exchanger.
7. The fan assembly of claim 1, wherein the fan device is configured to be installed in an indoor space.
8. The fan assembly of claim 1, wherein the housing further has an indoor intake vent coupled to the air path between the outdoor intake vent and the filter module.
9. The fan assembly of claim 8, wherein the fan assembly is operable in an internal circulation mode in which the outdoor intake is closed and the fresh air fan directs air entering the housing via the indoor intake into an airflow passing through the filter module and then exiting the housing outside via the indoor outlet.
10. The fan assembly of claim 1,
the fan equipment also comprises an exhaust fan, and the shell is also provided with an indoor air inlet and an outdoor air outlet;
the exhaust fan is located within the enclosure and is configured to direct air entering the enclosure via the indoor air intake to form an airflow that is exhausted to an exterior of the enclosure via the outdoor air outlet.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011585483.8A CN112682868A (en) | 2020-12-28 | 2020-12-28 | Fan unit with split type dehydrating unit |
| US17/396,892 US20220205654A1 (en) | 2020-12-28 | 2021-08-09 | Dehumidification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011585483.8A CN112682868A (en) | 2020-12-28 | 2020-12-28 | Fan unit with split type dehydrating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112682868A true CN112682868A (en) | 2021-04-20 |
Family
ID=75454687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011585483.8A Pending CN112682868A (en) | 2020-12-28 | 2020-12-28 | Fan unit with split type dehydrating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112682868A (en) |
-
2020
- 2020-12-28 CN CN202011585483.8A patent/CN112682868A/en active Pending
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