Fresh air handling unit, control method of fresh air handling unit and storage medium

Abstract

The invention relates to a fresh air handling unit, a control method of the fresh air handling unit and a storage medium, and relates to the technical field of fresh air handling units. The fresh air handling unit comprises a first air supply cavity, a second air supply cavity and a heat exchange channel with a heat exchanger, the first air supply cavity communicates with the second air supply cavity through the heat exchange channel, and the first air supply cavity is provided with a first air supply outlet capable of being opened or closed; the second air supply cavity is provided with a second air supply outlet capable of being opened or closed. In the first fresh air mode, the first air supply outlet is controlled to be opened, the second air supply outlet is controlled to be closed, and the heat exchanger is closed, so that fresh air is sent out from the first air supply outlet; and in the second fresh air mode, the first air supply outlet is controlled to be closed, the second air supply outlet is controlled to be opened, and the heat exchanger is opened, so that fresh air is sent out from the second air supply outlet after sequentially passing through the first air supply cavity, the heat exchange channel and the second air supply cavity. The power consumption of the air feeder can be reduced when heat exchange is not needed, and the energy-saving effect of the fresh air handling unit is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air units, and in particular to a fresh air unit, a control method for the fresh air unit, and a storage medium. Background Art

[0002] In order to ensure air flow in the hospital and avoid cross infection in the hospital, a fresh air unit will be installed in the hospital to introduce fresh air from outside the hospital into the hospital to improve the air quality in the hospital. However, the outdoor air temperature fluctuates greatly. In winter, the temperature of the fresh air is too low, while in summer, the temperature of the fresh air is too high. Directly introducing fresh air into the hospital will cause discomfort to patients or medical staff in the hospital.

[0003] In the related art, a heat exchanger is installed in the fresh air unit to heat or cool the fresh air introduced into the hospital through the heat exchanger so that the temperature of the fresh air entering the hospital is appropriate. However, installing a heat exchanger in the ventilation duct will increase the wind resistance in the ventilation duct. Even if the heat exchanger is not started, the load of the fresh air unit will increase, the power consumption during use is large, and the energy-saving performance is insufficient. Summary of the invention

[0004] The present invention provides a fresh air unit, a control method for the fresh air unit and a storage medium, which are used to reduce power consumption and improve energy-saving performance.

[0005] In a first aspect, the present invention provides a fresh air unit, which includes: a first air supply chamber, a second air supply chamber and a heat exchange channel with a heat exchanger, the first air supply chamber is connected to the second air supply chamber through the heat exchange channel, the first air supply chamber is provided with a first air supply port that can be opened or closed, and the second air supply chamber is provided with a second air supply port that can be opened or closed; wherein, in a first fresh air mode, the first air supply port is controlled to be opened, the second air supply port is controlled to be closed, and the heat exchanger is closed, so that fresh air is delivered from the first air supply port; in a second fresh air mode, the first air supply port is controlled to be closed, the second air supply port is controlled to be opened, and the heat exchanger is opened, so that fresh air is delivered from the second air supply port after passing through the first air supply chamber, the heat exchange channel and the second air supply chamber in sequence.

[0006] In one embodiment, a first air supply valve is provided at the first air supply outlet, and the first air supply valve is used to close or open the first air supply outlet; a second air supply valve is provided at the second air supply outlet, and the second air supply valve is used to close or open the second air supply outlet; the fresh air unit includes a controller, and the controller is electrically connected to the first air supply valve and the second air supply valve, respectively.

[0007] In one embodiment, the first air supply chamber is provided with a fresh air inlet; the fresh air unit also includes a return air chamber and a mixing air channel, the return air chamber has a return air inlet, the mixing air channel connects the return air chamber with the first air supply chamber, and a mixing ventilation valve is provided at the mixing air channel; wherein, in the normal return air mode, the return air inlet is opened, the mixing air channel is opened, and the fresh air inlet is closed, so that the return air enters from the first air supply chamber and can be delivered from the first air supply port or the second air supply port; in the normal mixed air mode, the return air inlet is opened, the mixing air channel is opened, and the fresh air inlet is opened, so that the mixed air enters from the first air supply chamber and can be delivered from the first air supply port or the second air supply port.

[0008] In one embodiment, the return air chamber is also provided with an exhaust port, and an exhaust valve is provided between the exhaust port and the return air inlet; an exhaust fan is installed in the return air chamber, and in the exhaust mode, the exhaust port is opened and the return air chamber is exhausted.

[0009] In one embodiment, the air outlet and the return air inlet are respectively arranged on opposite sides of the return air cavity, and the side of the return air cavity where the return air inlet is arranged is communicated with the air mixing channel.

[0010] In one embodiment, the maximum dimension direction of the first air supply cavity is the first direction; the second air supply cavity and the return air cavity are located on the same side of the first air supply cavity in the second direction, wherein the second direction is perpendicular to the first direction.

[0011] In one embodiment, the first air supply cavity is connected to the heat exchange channel and the air mixing channel on two opposite sides along the first direction respectively; one side of the return air cavity is connected to the air mixing channel, and the other side of the return air cavity extends toward the second air supply cavity.

[0012] In one embodiment, a first filter is disposed in the first air supply chamber and the return air chamber respectively.

[0013] In one embodiment, the fresh air unit also includes a first ventilation channel connected to the first air supply chamber, a second ventilation channel connected to the second air supply chamber, and a filter chamber, the filter chamber is respectively connected to the first ventilation channel and the second ventilation channel, the filter chamber has a third air supply port, and a second filter is installed in the filter chamber; in the emergency ventilation mode, the first air supply port and the second air supply port are closed, and the first ventilation channel or the second ventilation channel is opened, so that the airflow enters the filter chamber from the first ventilation channel or the second ventilation channel, and then is sent out from the third air supply port of the filter chamber.

[0014] In one embodiment, the fresh air unit also includes a shell, in which a first partition, a second partition and a third partition are arranged, the first partition is parallel to the third partition, and the first partition and the third partition are both perpendicular to the second partition, one end of the second partition is connected to the middle area of ​​the first partition, and the middle area of ​​the second partition is connected to the third partition; the inner wall of the shell and the first partition, the second partition and the third partition jointly define a first air supply chamber, a second air supply chamber, a return air chamber and a filter chamber; wherein the filter chamber is located on the side of the first partition away from the second partition, the second air supply chamber is located between the first partition and the third partition, the return air chamber is located on the side of the third partition away from the first partition, and the first air supply chamber is located on the side of the second partition away from the third partition.

[0015] In one embodiment, the first ventilation channel and the second ventilation channel are both formed in the first partition, the heat exchange channel is formed on a side of the second partition close to the first partition, and the air mixing channel is formed on a side of the second partition away from the first partition.

[0016] In the second aspect, the present invention also provides a control method for a fresh air unit, comprising the following steps: when the fresh air unit is in a first fresh air mode, a first air supply outlet located on a first air supply cavity of the fresh air unit is opened, a second air supply outlet located on a second air supply cavity of the fresh air unit is closed, and a heat exchanger located in a heat exchange channel of the fresh air unit is closed, so that fresh air is delivered from the first air supply outlet; when the fresh air unit is in a second fresh air mode, the first air supply outlet located on the first air supply cavity of the fresh air unit is closed, a second air supply outlet located on the second air supply cavity of the fresh air unit is opened, and a heat exchanger located in the heat exchange channel of the fresh air unit is opened, so that the fresh air is delivered from the second air supply outlet after passing through the first air supply cavity, the heat exchange channel and the second air supply cavity in sequence.

[0017] In one embodiment, when the fresh air unit is in normal return air mode, the fresh air inlet located in the first air supply chamber is closed, and the mixed air channel connecting the first air supply chamber and the return air chamber is opened, so that the return air enters the first air supply chamber and can be delivered from the first air supply port or the second air supply port; when the fresh air unit is in normal mixed air mode, the fresh air inlet located in the first air supply chamber is opened, and the mixed air channel connecting the first air supply chamber and the return air chamber is opened, so that the mixed air enters the first air supply chamber and can be delivered from the first air supply port or the second air supply port.

[0018] In one embodiment, the fresh air unit also includes a first ventilation channel connecting the first air supply chamber and the filter chamber, and a second ventilation channel connecting the second air supply chamber and the filter chamber. The control method also includes the following steps: when the fresh air unit is in emergency ventilation mode, the first air supply port and the second air supply port are closed, and the first ventilation channel or the second ventilation channel is opened, so that the airflow enters the filter chamber from the first ventilation channel or the second ventilation channel, and then is delivered out from the third air supply port of the filter chamber.

[0019] In a third aspect, the present invention further provides a storage medium having a computer program stored thereon, wherein the computer program implements the control method of the second aspect when executed by a processor.

[0020] Compared with the prior art, the advantage of the present invention is that when there is no need to exchange heat for the fresh air, the controller can be used to control the first air outlet to open and the second air outlet to close, so that the fresh air directly flows into the room from the first air outlet of the first air supply chamber, and avoids passing the fresh air through the heat exchanger in the process of passing the fresh air into the room, thereby reducing wind resistance and power consumption of air supply. When it is necessary to adjust the temperature of the fresh air, the first air outlet can be controlled to close, and the second air outlet and the heat exchanger can be controlled to open, so that the fresh air cannot flow out directly from the first air outlet, but needs to pass through the heat exchange channel to be heated by the heat exchanger before flowing out from the second air outlet, thereby achieving temperature adjustment of the fresh air. The power consumption of the blower can be reduced when there is no need to exchange heat for the fresh air, thereby improving the energy-saving effect of the fresh air unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0022] Figure 1 is a schematic diagram of the internal structure of the fresh air unit in the main viewing direction in an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the internal structure of the fresh air unit in the embodiment of the present invention as viewed from the right;

[0024] Figure 3 is a schematic diagram of the internal structure of the fresh air unit in the axonometric direction in an embodiment of the present invention;

[0025] Figure 4 is an airflow direction diagram of the fresh air unit in the first fresh air mode in an embodiment of the present invention;

[0026] Figure 5 is an airflow direction diagram of the fresh air unit in the second fresh air mode in an embodiment of the present invention;

[0027] Figure 6 is an airflow direction diagram of the fresh air unit in the third fresh air mode in an embodiment of the present invention;

[0028] Figure 7 is an airflow direction diagram of the fresh air unit in the fourth fresh air mode in an embodiment of the present invention;

[0029] Figure 8 is an airflow direction diagram of the fresh air unit in the first return air mode in an embodiment of the present invention;

[0030] Fig. 9is an airflow direction diagram of the fresh air unit in the second return air mode in an embodiment of the present invention;

[0031] Fig.10 is an airflow direction diagram of the fresh air unit in the third return air mode in an embodiment of the present invention;

[0032] Fig.11 is an airflow direction diagram of the fresh air unit in the fourth return air mode in an embodiment of the present invention;

[0033] Fig.12 is an airflow direction diagram of the fresh air unit in the first mixed air mode in an embodiment of the present invention;

[0034] Fig.13 is an airflow direction diagram of the fresh air unit in the second air mixing mode in an embodiment of the present invention;

[0035] Fig.14 is an airflow direction diagram of the fresh air unit in the third air mixing mode in an embodiment of the present invention;

[0036] Fig.15 It is an airflow direction diagram of the fresh air unit in the fourth mixed air mode in an embodiment of the present invention.

[0037] Reference numerals:

[0038] 1. Shell; 11. First baffle; 12. Second baffle; 13. Third baffle;

[0039] 2. First air supply chamber; 21. First air supply valve; 22. First air supply port; 23. Fresh air inlet; 24. Fresh air valve; 25. Air supply fan;

[0040] 3. Second air supply chamber; 31. Second air supply valve; 32. Second air supply port;

[0041] 4. Heat exchange channel; 41. Heat exchanger;

[0042] 5. Return air chamber; 51. Return air inlet; 52. Exhaust fan; 53. Exhaust outlet; 54. Exhaust valve;

[0043] 6. Mixing air channel; 61. Mixing ventilation valve;

[0044] 7. Filter chamber; 71. Second filter;

[0045] 81, first ventilation channel; 811, first ventilation valve; 82, second ventilation channel; 821, second ventilation valve;

[0046] 9. The first filter. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings.

[0048] In order to adjust the temperature of the indoor gas introduced by the fresh air unit, a heat exchanger is usually installed in the ventilation duct of the fresh air unit. When the heat exchanger is started, the gas passing through the heat exchanger exchanges heat with the heat exchanger, thereby adjusting the temperature of the gas. However, since the heat exchanger is installed in the ventilation duct, in order to improve the heat exchange capacity of the heat exchanger, the effective contact area between the heat exchanger and the gas is generally large, thereby increasing the wind resistance in the ventilation duct and reducing the wind speed. The power of the blower needs to be increased to complete the air supply work, which increases the power consumption of the fresh air unit.

[0049] In the first aspect, the present application provides a fresh air unit, see Figures 1 to 3 As shown, the fresh air unit includes:

[0050] The fresh air unit further comprises a first air supply chamber 2, a second air supply chamber 3 and a heat exchange channel 4, wherein the heat exchange channel 4 connects the first air supply chamber 2 with the second air supply chamber 3. The air supply fan 25 is arranged in the first air supply chamber 2, and the heat exchanger 41 is arranged in the heat exchange channel 4.

[0051] See also Figure 1 as well as Figure 5 As shown, when it is necessary to use the fresh air unit to deliver fresh air after heat exchange in the heat exchanger 41 to the room, the fresh air unit is adjusted to the second fresh air mode. At this time, the controller can be used to control the first air outlet 22 to be closed, and then the controller can be used to open the air blower 25 and the heat exchanger 41 and control the second air supply valve to open the second air supply outlet 32. Figure 5 As shown, at this time, under the action of the blower 25, the outdoor fresh air is drawn into the first air supply chamber 2 from the fresh air inlet 23. Since the first air supply valve 21 closes the first air supply port 22, the fresh air in the first air supply chamber 2 cannot flow out from the first air supply port 22, and can only flow into the second air supply chamber 3 through the heat exchange channel 4. When the fresh air passes through the heat exchange channel 4, the heat exchanger 41 in the heat exchange channel 4 performs heat exchange on the incoming fresh air to achieve the regulation of the fresh air problem. Since the second air supply port 32 is open, the fresh air after heat exchange will eventually flow out from the second air supply port 32, and the fresh air with suitable temperature will be introduced into the room.

[0052] See also Figure 4As shown, when the outdoor fresh air temperature is suitable, it is only necessary to introduce fresh air into the room without heat exchange for the fresh air, and the fresh air unit can be adjusted to the first fresh air mode. At this time, the second air supply port 32 and the heat exchanger 41 are controlled to be closed by the controller, and the first air supply port 22 and the air blower 25 are controlled to be opened by the controller. The outdoor fresh air is drawn into the first air supply chamber 2 by the air blower 25, and the fresh air drawn into the first air supply chamber 2 can be directly led to the room through the opened first air supply port 22. In the process of conveying fresh air, it is not necessary to guide the fresh air into the heat exchange channel 4, which avoids the heat exchanger 41 in the heat exchange channel 4 increasing the wind resistance, thereby reducing the load of the air blower 25 and improving the energy-saving performance of the fresh air unit.

[0053] According to the above, the fresh air unit provided in the present application can not only use the heat exchanger 41 to adjust the fresh air temperature when the external environment is too cold or too hot, but also can directly discharge the fresh air in the first air supply chamber 2 from the first air supply port 22 when there is no need to adjust the fresh air temperature, thereby avoiding the fresh air being obstructed by the heat exchanger 41 and increasing the power consumption of the air supply fan 25. Compared with the previous fresh air units with adjustable fresh air temperature, it is more energy-efficient.

[0054] It should be noted that the heat exchanger 41 can be a composite heat exchanger 41 with both heating and cooling functions, so that the gas can be heated in cold weather and cooled in hot weather. In other implementation scenarios, the heat exchanger 41 can also be a heating heat exchanger 41 with only a heating function or a cooling heat exchanger 41 with only a cooling function, so as to be applicable to perennially cold areas or perennially hot areas.

[0055] In some implementations, a first air supply valve 21 is provided at the first air supply port 22 of the first air supply chamber 2, and the first air supply port 22 can be controlled to be opened or closed by the first air supply valve 21; a second air supply valve is provided at the second air supply port 32 of the second air supply chamber 3, and the second air supply port 32 can be controlled to be opened or closed by controlling the second air supply valve. The first air supply valve 21, the second air supply valve, the air blower 25, and the heat exchanger 41 are all electrically connected to the controller, and the controller can control the states of the first air supply valve 21, the second air supply valve, the air blower 25, and the heat exchanger 41 to realize the switching of the ventilation state of the fresh air unit.

[0056] See also Figure 1 and Figure 2 As shown, in some embodiments, a fresh air valve 24 is provided at the fresh air inlet 23 of the first air supply chamber 2. When the fresh air valve 24 opens the fresh air inlet 23, fresh air from the outside is allowed to pass through the fresh air inlet 23; when the fresh air valve 24 closes the fresh air inlet 23, the fresh air inlet 23 can be blocked by the fresh air valve 24 to prevent the fresh air from the outside from entering the first air supply chamber 2 from the fresh air inlet 23.

[0057] Continue to refer Figure 1 The shell 1 is also formed with a return air chamber 5 and an air mixing channel 6, and the air mixing channel 6 can be opened or closed. The return air chamber 5 has a return air inlet 51, and the air mixing channel 6 connects the return air chamber 5 with the first air supply chamber 2, and a mixing ventilation valve 61 is provided at the air mixing channel 6. The return air inlet 51 is used to communicate with the room, so that the indoor gas flows into the return air chamber 5 through the return air inlet 51. By providing the mixing ventilation valve 61 at the air mixing channel 6, the connection and disconnection between the return air chamber 5 and the first air supply chamber 2 can be controlled. The return air chamber 5 is connected to the first air supply chamber 2 through the air mixing channel 6, so that the return air in the return air chamber 5 can flow into the first air supply chamber 2.

[0058] In the normal return air mode, the return air inlet 51 is opened, the air mixing channel 6 is opened, and the fresh air inlet 23 is closed, so that the return air is sent in from the first air supply cavity and can be sent out from the first air supply port or the second air supply port.

[0059] In the normal air mixing mode, the return air inlet 51 , the fresh air inlet 23 and the air mixing channel 6 are all opened, so that the mixed air enters from the first air supply chamber 2 and can be delivered from the first air supply port 22 or the second air supply port 32 .

[0060] In some implementations, a return air valve is provided at the return air inlet 51, and the return air inlet 51 can be opened or closed by controlling the state of the return air valve.

[0061] Specifically, when the fresh air unit needs to be switched to the return air mode, the controller electrically connected to the fresh air valve 24 can be used to control the fresh air valve 24 to close the fresh air inlet 23, and the controller can be used to open the mixed ventilation valve 61 at the mixed air channel 6, so that the return air chamber 5 is connected to the first air supply chamber 2. Then the controller controls the air supply fan 25 to be turned on, and the air in the room is drawn into the return air chamber 5 by the air extraction capacity of the air supply fan 25. Since the mixed ventilation valve 61 is opened at this time, the gas in the return air chamber 5 can flow into the first air supply chamber 2. Afterwards, depending on whether the gas needs to be heat exchanged, the gas is guided into the room from the first air supply port 22 or the second air supply port 32.

[0062] Since the return air chamber 5 is connected to the first air supply chamber 2 through the mixed air channel 6, and the first air supply chamber 2 is provided with a fresh air inlet 23, when it is necessary to supplement fresh air and return air to the room at the same time, the fresh air unit can be switched to the mixed air mode. Specifically, when the fresh air unit is switched to the mixed air mode, the controller is used to open the fresh air valve 24 and the mixed ventilation valve 61, and the controller is used to open the blower 25 at the same time, so as to draw the outdoor gas from the fresh air inlet 23 into the first air supply chamber 2, and draw the indoor gas into the return air chamber 5 through the return air inlet 51 and then flow to the first air supply chamber 2. Afterwards, depending on whether the gas needs to be heat exchanged, the gas is guided into the room from the first air supply port 22 or from the second air supply port 32. In other words, the fresh air component provided in the present application can realize a variety of ventilation scenarios of fresh air ventilation, return air ventilation and mixed air ventilation to meet the various needs of customers.

[0063] As can be seen from the above, in the present application, by setting the above-mentioned valve body structure and cavity structure, a heat exchanger 41 is used to achieve heat exchange work in various ventilation environments. Compared with setting a heat exchanger 41 in each of the multiple air supply channels, the number of heat exchangers 41 is reduced, thereby reducing the cost of the fresh air unit.

[0064] If heat exchange of the gas is required, the first air supply valve 21 can be used by the controller to close the first air supply port 22, and the controller heat exchanger 41 can be opened and the second air supply valve can be controlled to open the second air supply port 32, so that the gas passes through the heat exchange channel 4 and is heated or cooled under the action of the heat exchanger 41, and flows out from the second air supply port 32 of the second air supply chamber 3.

[0065] If there is no need to exchange heat for the gas, the first air supply valve 21 can be controlled by the controller to open the first air supply port 22, and then the heat exchanger 41 can be closed by the controller and the second air supply valve can be controlled to close the second air supply port 32, so that the gas in the first air supply chamber 2 flows directly out from the first air supply port 22 of the first air supply chamber 2.

[0066] That is to say, the fresh air unit provided in the present application can not only reduce the wind resistance during fresh air ventilation, but also reduce the wind resistance during mixed ventilation and return air ventilation, thereby improving the energy-saving capability in various ventilation scenarios.

[0067] See also Figure 1 As shown, in some implementations, the return air chamber 5 is further provided with an exhaust port 53, an exhaust valve 54 is provided between the exhaust port 53 and the return air inlet 51, an exhaust fan 52 is installed in the return air chamber 5, and the exhaust valve 54 and the exhaust fan 52 are electrically connected to the controller respectively.

[0068] The controller can be used to control the exhaust valve 54 to open the exhaust port 53, and control the exhaust fan 52 to start, so as to draw the indoor gas from the return air inlet 51 into the return air chamber 5, and guide the gas drawn into the return air chamber 5 to the exhaust port 53 and discharge it to the outside, thereby achieving an exhaust effect for the room.

[0069] See also Figure 1 , Figure 2 as well as Figure 3 As shown, in some implementations, the exhaust port 53 and the return air inlet 51 are respectively arranged on opposite sides of the return air chamber 5, and the side of the return air chamber 5 provided with the return air port is connected to the air mixing channel 6. The exhaust fan 52 can be used to drive the gas in the return air chamber 5 to flow to the exhaust port 53 to complete the exhaust work.

[0070] Due to the above-mentioned arrangement, the fresh air unit provided in the present application can carry out fresh air ventilation work while performing exhaust work, or carry out mixed air ventilation work at the same time.

[0071] It is understandable that in some implementations, fresh air ventilation is also performed while exhausting. Specifically, when fresh air ventilation needs to be performed while exhausting, the mixed ventilation valve 61 can be controlled to close the mixed air channel 6 to prevent the gas drawn into the return air chamber 5 by the exhaust fan 52 from flowing into the first air supply chamber 2 and being delivered to the room. Then, the controller is used to control the air supply fan 25 to open, and the first air supply valve 21 and the second air supply valve are controlled so that one of the first air supply port 22 and the second air supply port 32 is opened, so that fresh air is introduced into the room while exhausting, and the indoor air is quickly updated.

[0072] Of course, the exhaust fan 52 and the supply fan 25 can also be turned on at the same time when the exhaust work is not performed to improve the air supply capacity of the return air supply or the mixed air supply.

[0073] Specifically, when the return air is supplied, the controller can be used to control the exhaust valve 54 to close the exhaust port 53 and the fresh air valve 24 to close the fresh air inlet 23, and then the controller can be used to control the mixed ventilation valve 61 to open the mixed air channel 6. Since the air supply fan 25 and the exhaust fan 52 have the same air guide direction at the mixed air channel 6, the controller can be used to control the air supply fan 25 and the exhaust fan 52 to be turned on at the same time to increase the air supply volume during the return air supply.

[0074] Similarly, when mixed air is supplied, the controller can be used to control the exhaust valve 54 to close the exhaust port 53, control the fresh air valve 24 to open the fresh air inlet 23, and control the mixed ventilation valve 61 to open the mixed air channel 6. The controller is then used to turn on the air supply fan 25 and the exhaust fan 52 to increase the air supply volume during mixed air supply.

[0075] See also Figure 1As shown, in some implementations, the maximum dimension direction of the first air supply cavity 2 is the first direction, and the second air supply cavity 3 and the return air cavity 5 are located on the same side of the first air supply cavity 2 in the second direction, wherein the first direction is perpendicular to the second direction.

[0076] Since the maximum dimension direction of the first air supply chamber 2 is the first direction, and the second air supply chamber 3 is located on one side of the first air supply chamber 2 in the second direction, compared with setting the second air supply chamber 3 on one side of the first air supply chamber 2 in the first direction, the size of the shell 1 in the first direction is avoided from further increasing.

[0077] Similarly, by arranging the return air chamber 5 on one side of the first air supply chamber 2 in the second direction, the size of the housing 1 in the first direction can also be prevented from further increasing. Moreover, since the return air chamber 5 and the second air supply chamber 3 are located on the same side of the first air supply chamber 2 in the second direction, compared with arranging the return air chamber 5 and the second air supply chamber 3 on opposite sides of the first air supply chamber 2 in the second direction, the size of the housing 1 in the second direction is reduced.

[0078] Among them, in some implementations, the second air supply chamber 3 and the return air chamber 5 are arranged adjacent to each other along the first direction to reduce the distance between the second air supply chamber 3 and the return air chamber 5 in the first direction, thereby making the sum of the sizes of the second air supply chamber 3 and the return air chamber 5 in the first direction smaller, reducing the size of the second air supply chamber 3 and the return air chamber 5 extending out of the first air supply chamber 2 in the first direction, thereby reducing the size of the shell 1 in the second direction.

[0079] In some implementations, the length of the first air supply chamber 2 in the first direction is a first length, the length of the second air supply chamber 3 in the first direction is a second length, and the length of the return air chamber 5 in the first direction is a third length, wherein the first length ≥ the second length + the third length. By setting the above dimensions, it is possible to prevent the second air supply chamber 3 or the return air chamber 5 from extending out of the first air supply chamber 2 in the first direction.

[0080] See also Figure 1 As shown, in some implementations, the first air supply chamber 2 and the return air chamber 5 are respectively provided with a first filter 9. The first filter 9 can filter impurities in the gas, intercept pollutants such as droplets and sewage, and provide cleaner gas during ventilation. In some implementations, a sterilization structure or a sterilization agent can also be provided on the first filter 9, so that the gas is sterilized and disinfected during the process of passing through the first air supply chamber 2 or the return air chamber 5, thereby sterilizing and disinfecting the gas passing through the fresh air unit.

[0081] Specifically, the first filter 9 in the first air supply chamber 2 can be set on the air inlet side of the air supply fan 25 (the side of the air supply fan 25 close to the fresh air inlet 23), and the first filter 9 in the return air chamber 5 can also be set on the air inlet side of the exhaust fan 52 (the side of the exhaust fan 52 close to the return air inlet 51).

[0082] See also Figure 1 As shown, in some implementations, the fresh air unit is formed with a first ventilation channel 81 connected to the first air supply chamber 2, and a second ventilation channel 82 connected to the second air supply chamber 3, and the fresh air unit is further formed with a filter chamber 7, the filter chamber 7 is respectively connected to the first ventilation channel 81 and the second ventilation channel 82, the filter chamber 7 has a third air supply port, and a second filter 71 is installed in the filter chamber 7;

[0083] When it is necessary to switch the fresh air unit to the emergency air supply mode, that is, when the gas needs to be further filtered, the fresh air unit can be switched to the emergency ventilation mode. At this time, the first air supply port 22 and the second air supply port 32 can be closed, and one of the first ventilation channel 81 and the second ventilation channel 82 can be opened, so that the gas flows into the filter chamber 7, and the impurities, bacteria, etc. in the gas are removed after being filtered by the first filter 9, and then the gas is passed into the room from the third air supply port of the filter chamber 7 to provide clean airflow for the room.

[0084] It should be noted that emergency air supply can be any type of fresh air, return air or mixed air supplied to the room, and the incoming airflow can be selected to pass through the heat exchange channel for heat exchange, or the incoming airflow can be prevented from passing through the heat exchange channel.

[0085] See also Figure 1 As shown, the first ventilation channel 81 is provided with a first ventilation valve 811, and the second ventilation channel 82 is provided with a second ventilation valve 821; the first ventilation valve 811 and the second ventilation valve 821 are electrically connected to the controller respectively. The controller opens or closes the first ventilation channel 81 by controlling the first ventilation valve 811, and opens or closes the second ventilation channel 82 by controlling the second ventilation valve 821.

[0086] In order to ensure the filtering effect on the airflow, the second filter 71 in the filter chamber 7 can be a high-efficiency filter with a higher filtering capacity than the first filter 9 arranged in the first air supply chamber 2.

[0087] A first ventilation passage 81 communicating with the first air supply chamber 2 and a second ventilation passage 82 communicating with the second air supply chamber 3 are provided.

[0088] When the air flow temperature in the first air supply chamber 2 does not meet the air supply condition, that is, when the air flow needs to be heat exchanged and temperature adjusted. The state of the first air supply valve 21, the second air supply valve and the first ventilation valve 811 can be controlled by the controller first, and the first air supply port 22, the second air supply port 32 and the first ventilation channel 81 can be closed respectively, and then the second ventilation channel 82 can be opened by controlling the state of the second ventilation valve 821, so that the air supply fan 25 can send the air flow in the first air supply chamber 2 to the second air supply chamber 3 through the heat exchange channel 4, and then flow into the filter chamber 7 through the second ventilation channel 82. Then the heat exchanger 41 in the heat exchange channel 4 is controlled to open, so as to realize heat exchange and temperature adjustment of the gas passing through the heat exchange channel 4, and the second filter 71 in the filter chamber 7 is used to filter the gas after heat exchange, and the filtered and heat exchanged gas is guided from the third air supply port into the room, so as to provide clean and comfortable air flow for the room.

[0089] When the air flow temperature in the first air supply chamber 2 meets the air supply condition, that is, when the air flow does not need to be heat exchanged and temperature adjusted, the state of the first air supply valve 21, the second air supply valve and the second ventilation valve 821 can be controlled by the controller to close the first air supply port 22, the second air supply port 32 and the second ventilation channel 82 respectively, and then the state of the first ventilation valve 811 is controlled to open the first ventilation channel 81, so that the gas flowing into the first air supply chamber 2 can flow from the first air supply channel into the filter chamber 7, and the gas is filtered through the second filter 71 in the filter chamber 7.

[0090] See also Figure 1 as well as Figure 3 As shown, in some implementations, a first partition 11, a second partition 12 and a third partition 13 are provided in the shell 1, the first partition 11 is parallel to the third partition 13, and the first partition 11 and the third partition 13 are both perpendicular to the second partition 12, one end of the second partition 12 is connected to the middle area of ​​the first partition 11 (the area between the two ends of the first partition 11), the middle area of ​​the second partition 12 (the area between the two ends of the second partition 12) is connected to the third partition 13, and the inner wall of the shell 1 and the first partition 11, the second partition 12 and the third partition 13 together define a first air supply chamber 2, a second air supply chamber 3, a return air chamber 5 and a filter chamber 7;

[0091] Among them, the filter chamber 7 is located on the side of the first partition 11 away from the second partition 12, the second air supply chamber 3 is located between the first partition 11 and the third partition 13, the return air chamber 5 is located on the side of the third partition 13 away from the first partition 11, and the first air supply chamber 2 is located on the side of the second partition 12 away from the third partition 13.

[0092] Firstly, four cavity structures are defined in the shell 1 by three partitions. Compared with setting up independent pipelines, the four cavity structures can be arranged more closely, thereby reducing the footprint of the fresh air unit.

[0093] In addition, since the first partition 11 is perpendicular to the second partition 12, and one end of the second partition 12 is connected to the middle area of ​​the first partition 11, the first partition 11 and the second partition 12 form a T-shaped structure. The second partition 12 is perpendicular to the third partition 13, and the middle area of ​​the second partition 12 is connected to the third partition 13, so that the second partition 12 and the third partition 13 also form a T-shaped structure. The second air supply cavity 3 is located between the first partition 11 and the third partition 13.

[0094] The above-mentioned structural arrangement enables the first air supply chamber 2, the filter chamber 7 and the second air supply chamber 3 to be arranged adjacent to each other. Compared with arranging the various chambers in a line, the distance between the various chambers is shortened, and compared with arranging the second air supply chamber 3 between the first air supply chamber 2 and the filter chamber 7, the ventilation path during emergency ventilation without heat exchange is shortened, and compared with arranging the filter chamber 7 between the first air supply chamber 2 and the second air supply chamber 3, the ventilation path during various heat exchange ventilations is shortened. In other words, through the chamber arrangement of the present application, not only can the space occupied by the fresh air unit be reduced, but also the paths in various ventilation scenarios are made as short as possible, the wind resistance caused by the ventilation path is reduced, and the energy-saving ability of the fresh air unit is improved.

[0095] At the same time, the above structural arrangement also takes into account that the second air supply chamber 3 is not provided with a blower 25, a filter and other components, and the volume of the second air supply chamber 3 can be set smaller, so that the return air chamber 5 and the second air supply chamber 3 are arranged on the same side of the second partition plate 12. Not only is the return air chamber 5 arranged adjacent to the first air supply chamber 2, shortening the ventilation path between the return air chamber 5 and the first air supply chamber 2, but also effectively utilizing the internal space of the housing 1, reducing the volume of the fresh air unit.

[0096] See also Figure 1 , Figure 2 as well as Figure 3 As shown, in some implementations, the first ventilation channel 81 and the second ventilation channel 82 are respectively formed in the first partition 11, the heat exchange channel 4 is formed on the side of the second partition 12 close to the first partition 11, and the air mixing channel 6 is formed on the side of the second partition 12 away from the first partition 11.

[0097] That is to say, by directly opening ventilation channels on each partition, compared with setting up additional pipes to form ventilation channels to connect various chambers, the ventilation channels opened on the partitions will not cause additional volume occupation, which is conducive to the miniaturization of the fresh air unit.

[0098] See also Figure 1 as well as Figure 3As shown, the first air supply port 22, the second air supply port 32, the third air supply port and the return air port of the fresh air unit are all arranged on the side of the housing 1 facing the room, so as to more conveniently exchange air with the indoor gas. The fresh air inlet 23 and the exhaust port 53 of the fresh air unit are both arranged on the side of the housing 1 facing the wall, so that the fresh air inlet 23 and the exhaust port 53 are connected to the relevant ventilation ducts to achieve exchange with outdoor gas.

[0099] See also Figure 1 As shown, in some implementations, the fresh air unit is a vertical unit, which is directly placed on the floor indoors. In other implementations, the fresh air unit can also be set as a hanging unit, which is installed indoors by hanging.

[0100] In a second aspect, the present invention further provides a control method for a fresh air unit, which is used to control the fresh air unit, wherein the fresh air unit has a first fresh air mode and a second fresh air mode, and the control method includes:

[0101] When the fresh air unit is in the first fresh air mode, the first air supply port 22 located on the first air supply chamber 2 of the fresh air unit is opened, the second air supply port 32 located on the second air supply chamber 3 of the fresh air unit is closed, and the heat exchanger 41 located in the heat exchange channel 4 of the fresh air unit is closed, so that fresh air is delivered from the first air supply port 22;

[0102] When the fresh air unit is in the second fresh air mode, the first air supply outlet 22 located on the first air supply chamber 2 of the fresh air unit is closed, the second air supply outlet 32 ​​located on the second air supply chamber 3 of the fresh air unit is opened, and the heat exchanger 41 located in the heat exchange channel 4 of the fresh air unit is opened, so that fresh air is delivered from the second air supply outlet 32.

[0103] Among them, the above-mentioned first fresh air mode and second fresh air mode do not pass through the filter cavity, and are collectively referred to as normal fresh air mode.

[0104] That is to say, when fresh air needs to be provided to the room and the temperature of the outdoor air flow meets the supply air temperature requirement, the fresh air unit is switched to the first fresh air mode. Figure 1 as well as Figure 4 As shown, at this time, the air flow from the fresh air unit into the room only passes through the first air supply chamber 2, but not through the heat exchange channel 4 and the second air supply chamber 3, thereby avoiding the heat exchanger 41 in the heat exchange channel 4 from reducing the air supply speed, reducing the power consumption of the air supply fan 25 in the first air supply chamber 2, and improving the energy-saving performance of the fresh air unit.

[0105] When fresh air needs to be supplied to the room and the temperature of the outdoor fresh air does not meet the supply air temperature requirement, the fresh air unit is switched to the second fresh air mode. Figure 1 as well as Figure 5As shown, the fresh air passes through the heat exchange channel 4, and the temperature of the air flow is conditioned by the heat exchanger 41 in the heat exchange channel 4 so that the temperature of the incoming fresh air meets the supply air temperature requirement.

[0106] The above only describes the opening and closing of the first air supply port 22 and the second air supply port 32. In fact, when the fresh air unit is switched to the first fresh air mode or the second fresh air mode, the controller needs to control the states of the first ventilation valve 811, the second ventilation valve 821, and the mixed ventilation valve 61 to close the first ventilation channel 81, the second ventilation channel 82, and the mixed ventilation valve 61, respectively, and the controller needs to control the state of the fresh air valve 24 to open the fresh air inlet 23. The flow direction of the supply air flow is limited to the first air supply chamber 2 and the second air supply chamber 3.

[0107] When the fresh air unit is in the emergency ventilation mode, the first air supply port 22 and the second air supply port 32 are closed, and the first ventilation channel 81 or the second ventilation channel 82 is opened, so that the air flow enters the filter chamber from the first ventilation channel 81 or the second ventilation channel 82, and then is sent out from the third air supply port of the filter chamber.

[0108] Emergency ventilation modes include emergency fresh air mode, emergency return air mode and emergency mixed air mode, among which the emergency fresh air mode can be further divided into the third fresh air mode and the fourth fresh air mode.

[0109] Specifically, when fresh air needs to be supplied urgently and the outdoor fresh air temperature meets the supply air temperature requirement, the fresh air unit is switched to the third fresh air mode. Figure 1 as well as Figure 6 As shown, at this time, the controller controls the fresh air inlet 23, the first ventilation channel 81, and the blower 25 to open, and controls the mixed air channel 6, the first air supply channel, the second air supply channel, the second ventilation channel 82 and the heat exchanger 41 to close, so that the fresh air flowing in from the fresh air inlet 23 flows directly from the first air supply chamber 2 to the filter chamber 7, and is finally delivered from the third air supply port of the filter chamber 7.

[0110] When fresh air needs to be supplied urgently and the outdoor fresh air temperature does not meet the supply air temperature requirement and heat exchange is required for the outdoor fresh air, the fresh air unit is switched to the fourth fresh air mode. Figure 1 as well as Figure 7 As shown, at this time, the controller controls the fresh air inlet 23, the second ventilation channel 82, the blower 25 and the heat exchanger 41 to open, and controls the mixing ventilation channel, the first air supply channel, the second air supply channel and the first ventilation channel 81 to close, so that the fresh air flowing in from the fresh air inlet 23 first passes through the heat exchange channel 4 for heat exchange and then flows into the filter chamber 7, and is finally delivered from the third air supply port of the filter chamber 7.

[0111] In addition, the control method provided in this embodiment can also control the fresh air unit to perform normal return air ventilation and emergency return air ventilation.

[0112] Among them, in the normal return air mode of the fresh air unit, the fresh air inlet 23 located in the first air supply chamber 2 is closed, and the air mixing channel 6 connecting the first air supply chamber 2 and the return air chamber 5 is opened, so that the return air enters from the first air supply chamber 2 and can be sent out from the first air supply port 22 or the second air supply port 32;

[0113] In the normal mixed air mode of the fresh air unit, the fresh air inlet 23 located in the first air supply chamber 2 is opened, and the mixed air channel 6 connecting the first air supply chamber 2 and the return air chamber 5 is opened, so that the mixed air enters from the first air supply chamber 2 and can be delivered from the first air supply port 22 or the second air supply port 32.

[0114] Among them, the normal return air mode includes a first return air mode and a second return air mode, and the normal mixed air mode includes a first mixed air mode and a second mixed air mode.

[0115] Specifically, when the fresh air unit is needed for normal return air ventilation and the return air temperature meets the supply air temperature, the fresh air unit is switched to the first return air mode. Figure 1 as well as Figure 8 As shown, at this time, the controller controls the air mixing channel 6, the first air supply port 22 and the air supply fan 25 to be opened, and controls the first ventilation channel 81, the second ventilation channel 82, the second air supply port 32, the fresh air inlet 23, the exhaust port 53 and the exhaust fan 52 to be closed. The air supply fan 25 draws the indoor air from the return air inlet 51 into the first air supply chamber 2, and then sends the indoor air from the first air supply port 22.

[0116] When the fresh air unit is needed for normal return air ventilation and the return air temperature does not meet the supply air temperature, the return air flow needs to be heat exchanged, and the fresh air unit is switched to the second return air mode. Figure 1 as well as Fig. 9 As shown, at this time, the controller controls the first air supply port 22, the fresh air inlet 23, the exhaust port 53, the first ventilation channel 81, the second ventilation channel 82 and the exhaust fan 52 to be closed, and controls the second air supply port 32, the air mixing channel 6, the heat exchanger 41 and the air supply fan 25 to be opened. The air supply fan 25 guides the airflow disposed at the return air inlet 51 through the heat exchange channel 4 for heat exchange, and then guides it to the second air supply chamber 3 and sends it back to the room from the second air supply port 32.

[0117] It is mentioned above that the emergency ventilation mode includes the emergency return air mode, and the specific emergency return air mode includes the third return air mode and the fourth return air mode.

[0118] When the fresh air unit is needed for emergency return air ventilation and the return air temperature meets the supply air temperature, the fresh air unit is switched to the third return air mode. Figure 1 as well as Fig.10As shown, at this time, the controller controls the first air supply outlet 22, the second air supply outlet 32, the fresh air inlet 23, the exhaust outlet 53, the second ventilation channel 82, the heat exchanger 41 and the exhaust fan 52 to be closed, and controls the first ventilation channel 81 and the air supply fan 25 to be opened, and uses the air supply fan 25 to guide the airflow at the return air inlet 51 to the first air supply chamber 2, so that the airflow in the first air supply chamber 2 passes through the first ventilation channel 81 to the filter chamber 7, and the return air flow is delivered to the room from the third air supply outlet at the filter chamber 7.

[0119] When the fresh air unit is needed for emergency return air ventilation, and the return air temperature does not meet the supply air temperature, and the return air flow needs to be heat exchanged, the fresh air unit is switched to the fourth return air mode. Figure 1 as well as Fig.11 As shown, at this time, the controller controls the first air supply port 22, the second air supply port 32, the fresh air inlet 23, the exhaust port 53, the first ventilation channel 81 and the exhaust fan 52 to be closed, and controls the second ventilation channel 82, the heat exchanger 41 and the air supply fan 25 to be opened. The air supply fan 25 guides the airflow at the return air inlet 51 to the first air supply chamber 2, and the gas in the first air supply chamber 2 passes through the heat exchange channel 4 and then passes into the filter chamber 7. Not only the heat exchange of the return air flow is realized by the heat exchanger 41, but also the filtering of the return air flow is realized by the second filter 71.

[0120] It should also be noted that the control method provided in the present application can also control the fresh air unit to perform mixed air ventilation, while passing fresh air and return air into the room.

[0121] When it is necessary to perform normal mixed air ventilation in the room and the temperature of the airflow in the first air supply chamber 2 meets the air supply temperature requirement, the fresh air unit is switched to the first mixed air mode. Figure 1 as well as Fig.12 As shown, specifically, the controller controls the opening of the fresh air inlet 23, the mixed air channel 6, the blower 25 and the first air outlet 22, and controls the closing of the exhaust port 53, the second air outlet 32, the first ventilation channel 81, the second ventilation channel 82, the exhaust fan 52 and the heat exchanger 41. The airflow at the fresh air inlet 23 and the airflow at the return air inlet 51 are simultaneously drawn into the first air supply chamber 2, and discharged into the room from the first air outlet 22. Mixed air is provided for the room.

[0122] When it is necessary to perform normal mixed air ventilation in the room and the air flow temperature in the first air supply chamber 2 does not meet the supply air temperature, and heat exchange is required for the air flow in the first air supply chamber 2, the fresh air unit is switched to the second mixed air mode. Figure 1 as well as Fig.13As shown, specifically, the controller controls the opening of the fresh air inlet 23, the mixed air channel 6, the blower 25, the heat exchanger 41 and the second air outlet 32, and controls the closing of the exhaust port 53, the first air outlet 22, the first ventilation channel 81, the exhaust fan 52 and the second ventilation channel 82. The airflow at the fresh air inlet 23 and the airflow at the return air inlet 51 are simultaneously drawn into the first air supply chamber 2, and the gas in the first air supply chamber 2 passes through the heat exchange channel 4 and enters the second air supply chamber 3, and then flows out from the second air supply port 32 of the second air supply chamber 3. While providing mixed air to the room, heat exchange of the mixed air is also achieved, so that the temperature of the introduced mixed air meets the supply air temperature.

[0123] It is mentioned above that the emergency ventilation mode includes the emergency mixed air mode, and the specific emergency mixed air mode includes the third mixed air mode and the fourth mixed air mode.

[0124] When urgent mixed air ventilation is required for the room and the air flow temperature in the first air supply chamber 2 meets the air supply temperature, the fresh air unit is switched to the third mixed air mode. Figure 1 as well as Fig.14 As shown, the controller controls the first air supply port 22, the second air supply port 32, the exhaust port 53, the heat exchanger 41, the exhaust fan 52 and the second ventilation channel 82 to be closed, and controls the fresh air inlet 23, the mixed air channel 6, the first ventilation channel 81 and the air supply fan 25 to be opened. The fresh air at the fresh air inlet 23 and the return air at the return air inlet 51 are simultaneously introduced into the first air supply chamber 2, and then flow into the filter chamber 7 from the first ventilation channel 81, and pass through the second filter 71 to filter impurities or germs in the mixed air, so that the cleaned mixed air is sent out from the third air supply port of the filter chamber 7.

[0125] When urgent mixed air ventilation is required for the room and the air flow temperature in the first air supply chamber 2 does not meet the air supply temperature, the fresh air unit is switched to the fourth mixed air mode. Figure 1 as well as Fig.15 As shown, the controller controls the first air supply port 22, the second air supply port 32, the exhaust port 53, the exhaust fan 52 and the first ventilation channel 81 to be closed, and controls the fresh air inlet 23, the mixed air channel 6, the second ventilation channel 82, the air supply fan 25 and the heat exchanger 41 to be opened. The fresh air at the fresh air inlet 23 and the return air at the return air inlet 51 are simultaneously introduced into the first air supply chamber 2, and then flow into the second air supply chamber 3 from the heat exchange channel 4 to complete the heat exchange of the gas, so that the gas in the second air supply chamber 3 flows into the filter chamber 7 from the second ventilation channel 82, and the gas is sent out from the third air supply port of the filter chamber 7. Not only the heat exchanger 41 is used to heat the gas, but also the second filter chamber 7 can be used to filter out impurities in the mixed air, so as to provide suitable and clean mixed air for the room.

[0126] When it is necessary to discharge the indoor gas, the fresh air unit can be switched to the exhaust mode. Specifically, the controller controls the exhaust port 53 and the exhaust fan 52 to open, so that the gas in the return air chamber 5 can be discharged from the exhaust port 53. It should be noted that the exhaust mode can be performed simultaneously with the above-mentioned various air supply modes.

[0127] In summary, the control method provided in the present application can enable the fresh air unit to complete at least 13 modes, which can meet the air supply needs in various situations.

[0128] For easier understanding, the control status of each mode can be found in the following table.

[0129]

[0130] In a third aspect, an embodiment of the present invention further provides a storage medium having a computer program stored thereon, wherein the computer program implements any one of the control methods in the second aspect when executed by a processor.

[0131] The processor may include, but is not limited to, one or more processors or microprocessors, etc. Each processor may be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components to execute the methods in the above embodiments.

[0132] The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The computer-readable storage medium may include, but is not limited to, for example, random access memory (RAM), read-only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, computer storage media (such as hard disks, floppy disks, solid-state drives, removable disks, CD-ROMs, DVD-ROMs, Blu-ray disks, etc.).

[0133] The storage medium may also store at least one computer executable program / instruction, which may be, for example, a computer readable instruction. Computer readable storage media include, but are not limited to, for example, volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. Computer readable storage media may include, for example, read-only memory (ROM), hard disk, flash memory, etc. For example, a non-transitory computer readable storage medium may be connected to a computing device such as a computer, and then, when the computing device runs the computer readable instructions stored on the computer readable storage medium, the various methods described above may be performed.

[0134] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fresh air unit, characterized in that: It includes: A first air supply chamber, a second air supply chamber, and a heat exchange channel having a heat exchanger, wherein the first air supply chamber is connected to the second air supply chamber through the heat exchange channel, the first air supply chamber is provided with a first air supply port that can be opened or closed, and the second air supply chamber is provided with a second air supply port that can be opened or closed; Wherein, in the first fresh air mode, the first air supply port is controlled to be opened, the second air supply port is controlled to be closed, and the heat exchanger is closed, so that fresh air is delivered from the first air supply port; In the second fresh air mode, the first air supply outlet is controlled to be closed, the second air supply outlet is controlled to be opened, and the heat exchanger is turned on, so that the fresh air passes through the first air supply cavity, the heat exchange channel and the second air supply cavity in sequence and is then delivered from the second air supply outlet.

2. The fresh air unit according to claim 1, characterized in that: The first air supply port is provided with a first air supply valve, and the first air supply valve is used to close or open the first air supply port. A second air supply valve is provided at the second air supply port, and the second air supply valve is used to close or open the second air supply port; The fresh air unit includes a controller, and the controller is electrically connected to the first air supply valve and the second air supply valve respectively.

3. The fresh air unit according to claim 1 or 2, characterized in that: The first air supply cavity is provided with a fresh air inlet; The fresh air unit further includes a return air chamber and an air mixing channel, wherein the return air chamber has a return air inlet, the air mixing channel connects the return air chamber with the first air supply chamber, and the air mixing channel can be opened or closed; Wherein, in the normal return air mode, the return air inlet is opened, the air mixing channel is opened, and the fresh air inlet is closed, so that the return air enters from the first air supply cavity and can be delivered from the first air supply port or the second air supply port; In the normal air mixing mode, the return air inlet is opened, the air mixing channel is opened, and the fresh air inlet is opened, so that the mixed air enters from the first air supply cavity and can be delivered from the first air supply port or the second air supply port.

4. The fresh air unit according to claim 3, characterized in that: The return air chamber is also provided with an exhaust port, and an exhaust valve is provided between the exhaust port and the return air inlet; An exhaust fan is installed in the return air chamber. In the exhaust mode, the exhaust port is opened and the return air chamber is exhausted.

5. The fresh air unit according to claim 4, characterized in that: The air outlet and the return air inlet are respectively arranged on opposite sides of the return air cavity, and the side of the return air cavity where the return air inlet is arranged is communicated with the air mixing channel.

6. The fresh air unit according to claim 3, characterized in that: The maximum dimension direction of the first air supply cavity is the first direction; The second air supply chamber and the return air chamber are located on the same side of the first air supply chamber in a second direction, wherein the second direction is perpendicular to the first direction.

7. The fresh air unit according to claim 6, characterized in that: The first air supply cavity is connected to the heat exchange channel and the air mixing channel at two opposite sides along the first direction respectively; One side of the return air chamber is connected to the air mixing channel, and the other side of the return air chamber extends toward the second air supply chamber.

8. The fresh air unit according to claim 3, characterized in that: The first air supply chamber and the return air chamber are respectively provided with a first filter.

9. The fresh air unit according to claim 3, characterized in that: The fresh air unit further includes a first ventilation channel connected to the first air supply chamber, a second ventilation channel connected to the second air supply chamber, and a filter chamber, wherein the filter chamber is connected to the first ventilation channel and the second ventilation channel respectively, the filter chamber has a third air supply port, and a second filter is installed in the filter chamber; In the emergency ventilation mode, the first air supply port and the second air supply port are closed, and the first ventilation channel or the second ventilation channel is opened, so that air flows into the filter chamber from the first ventilation channel or the second ventilation channel, and then is sent out from the third air supply port of the filter chamber.

10. The fresh air unit according to claim 9, characterized in that: Also includes a housing, The shell is provided with a first partition, a second partition and a third partition, the first partition is parallel to the third partition, and the first partition and the third partition are perpendicular to the second partition, one end of the second partition is connected to the middle area of ​​the first partition, and the middle area of ​​the second partition is connected to the third partition; The inner wall of the shell and the first partition plate, the second partition plate and the third partition plate together define the first air supply chamber, the second air supply chamber, the return air chamber and the filter chamber; Among them, the filter chamber is located on the side of the first partition away from the second partition, the second air supply chamber is located between the first partition and the third partition, the return air chamber is located on the side of the third partition away from the first partition, and the first air supply chamber is located on the side of the second partition away from the third partition.

11. The fresh air unit according to claim 10, characterized in that: The first ventilation channel and the second ventilation channel are both formed in the first partition plate, the heat exchange channel is formed on a side of the second partition plate close to the first partition plate, and the air mixing channel is formed on a side of the second partition plate away from the first partition plate.

12. A control method for a fresh air unit, characterized in that: The following steps are involved: When the fresh air unit is in the first fresh air mode, the first air supply port on the first air supply cavity of the fresh air unit is opened, the second air supply port on the second air supply cavity of the fresh air unit is closed, and the heat exchanger in the heat exchange channel of the fresh air unit is closed, so that fresh air is delivered from the first air supply port; When the fresh air unit is in the second fresh air mode, the first air supply outlet on the first air supply chamber of the fresh air unit is closed, the second air supply outlet on the second air supply chamber of the fresh air unit is opened, and the heat exchanger in the heat exchange channel of the fresh air unit is opened, so that the fresh air passes through the first air supply chamber, the heat exchange channel and the second air supply chamber in sequence and is delivered from the second air supply outlet.

13. The control method according to claim 12, characterized in that: It also includes the following steps: In the normal return air mode of the fresh air unit, the fresh air inlet located in the first air supply cavity is closed, and the air mixing channel connecting the first air supply cavity and the return air cavity is opened, so that the return air enters from the first air supply cavity and can be sent out from the first air supply port or the second air supply port; In the normal mixed air mode of the fresh air unit, the fresh air inlet located in the first air supply chamber is opened, and the mixed air channel connecting the first air supply chamber and the return air chamber is opened, so that the mixed air enters from the first air supply chamber and can be delivered from the first air supply port or the second air supply port.

14. The control method according to claim 12, characterized in that: The fresh air unit further includes a first ventilation channel connecting the first air supply chamber and the filter chamber, and a second ventilation channel connecting the second air supply chamber and the filter chamber. The control method further includes the following steps: When the fresh air unit is in emergency ventilation mode, the first air supply outlet and the second air supply outlet are closed, and the first ventilation channel or the second ventilation channel is opened, so that the air flow enters the filter chamber from the first ventilation channel or the second ventilation channel, and then is sent out from the third air supply outlet of the filter chamber.

15. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method according to any one of claims 12 to 14 is implemented.

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