Heat recovery type indoor environment heat, oxygen and humidity regulation and control unit

Abstract

The utility model relates to the technical field of combined air conditioning units, and provides a heat recovery type indoor environment heat, oxygen and humidity regulation and control unit which comprises an exhaust section, an oxygen generation section, a mixing section, a heating and humidifying section and a fan section. A first fresh air opening, a first air valve communicated with the mixing section and a second air valve communicated with the exhaust section are arranged on the oxygen generation section; an exhaust fan and an exhaust outlet are arranged at the exhaust section; an oxygen generator is arranged in the oxygen generation section; the mixing section is provided with a second fresh air opening provided with a third air valve and an air return opening provided with a fourth air valve. And an air feeder and an air supply outlet are arranged at the fan section. The technical problems that in the prior art, an oxygen supply system and a heating / air conditioning system are separated from each other, the influence of humidity change and fresh air exchange on the oxygen concentration is not considered, indoor air is dry, and the oxygen concentration cannot meet the use requirement can be solved. And waste heat of the oxygen generator can be recovered by enabling fresh air to pass through the oxygen generator, so that the heating capacity requirement and the corresponding energy consumption are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of combined air-conditioning units, in particular to a heat recovery type indoor environment heat, oxygen and humidity control unit. Background Art

[0002] The winter outdoor environment in plateaus and cold regions is characterized by low oxygen concentration, low temperature, and low humidity. Heating loads dominate the demand year-round, with cooling loads being minimal. Ventilation can meet demand during the off-season. Traditional approaches to addressing indoor oxygen concentration and temperature separate the oxygen supply system from the heating / air conditioning system. Most fail to account for changes in indoor humidity, and the oxygen flow rate required for supply is often calculated without outdoor fresh air. This can lead to increased indoor air pollutants, odors, and dry air after prolonged operation. However, increasing fresh air ventilation reduces the oxygen supply system's efficiency in increasing oxygen concentration, resulting in indoor oxygen concentrations failing to meet requirements. Utility Model Content

[0003] The purpose of the utility model is to overcome the technical problems in the prior art in which the oxygen supply system and the heating / air conditioning system are separated, and the influence of humidity changes and fresh air ventilation on the oxygen concentration is not taken into account, which easily leads to indoor air drying and the oxygen concentration failing to meet the use requirements, and to provide a heat recovery type indoor environment heat oxygen and humidity control unit.

[0004] In a first aspect, the utility model provides a heat recovery type indoor environment heat oxygen and humidity control unit, comprising an air duct, the air duct comprising an oxygen production section, a mixing section, a heating and humidification section and a fan section connected in sequence, the oxygen production section also being connected to an exhaust section;

[0005] The oxygen production section is provided with a first fresh air inlet, a first air valve and a second air valve. The first fresh air inlet is used to connect to the outdoor environment. The first air valve is connected to the mixing section. The second air valve is connected to the exhaust section. The exhaust section is provided with an exhaust fan and an exhaust outlet for connecting to the outdoor environment.

[0006] An oxygen concentrator is provided in the oxygen production section, the oxygen output port of the oxygen concentrator is connected to the mixing section, and the nitrogen output port of the oxygen concentrator is connected to the exhaust section;

[0007] The mixing section is provided with a second fresh air inlet and a return air inlet; the second fresh air inlet is used to connect to the outdoor environment, and a third air valve is provided at the second fresh air inlet; the return air inlet is used to connect to the indoor environment, and a fourth air valve is provided at the return air inlet;

[0008] The heating and humidifying section is provided with a heating device and a humidifying device. The heating device is used to adjust the temperature of the air, and the humidifying device is used to adjust the humidity of the air.

[0009] The fan section is provided with an air supply fan and an air supply outlet for connecting to the indoor environment.

[0010] The heat recovery indoor environment heat oxygen and humidity control unit of this solution is equipped with an oxygen production section and a heating and humidification section in the air duct. It can jointly control the indoor air from three aspects: oxygen concentration, temperature and humidity to meet the indoor heat oxygen and humidity environment requirements and improve the air quality. In addition, this solution can also change the working mode by switching the working status of each air valve and the heating device and humidification device. For example:

[0011] By closing the third air valve and the first air valve, the present solution can operate in a state of full return air without fresh air, which is conducive to the oxygen concentrator to quickly increase the indoor oxygen concentration to the target value; and when the oxygen concentration reaches the target value, opening the first air valve can allow fresh air to flow through the oxygen concentrator into the room, so as to recover the waste heat generated by the oxygen concentrator into the room, thereby reducing the heating amount required by the heating device and the corresponding energy consumption, while also achieving ventilation of the indoor environment and avoiding odor; and when the heat load or humidification demand is low, the heating device and the humidification device can be turned off respectively to reduce the energy consumption of the present solution.

[0012] In summary, this solution sets up an exhaust section, an oxygen production section, a mixing section, a heating and humidification section and a fan section in the air duct, and sets openable and closable air valves between the exhaust section and the oxygen production section, between the oxygen production section and the mixing section, between the mixing section and the outdoor environment, and between the mixing section and the indoor environment. On the one hand, the indoor air can be jointly regulated from the three aspects of oxygen concentration, temperature and humidity to meet the requirements of the indoor hot, oxygen and humid environment; on the other hand, the working mode can be changed by adjusting the working status of each air valve and the heating device and the humidifying device, so as to achieve the purpose of quickly increasing the oxygen concentration, ventilation, recovering the waste heat of the oxygen generator and reducing energy consumption under the corresponding working mode.

[0013] Preferably, a filter section is provided between the mixing section and the fan section, and the filter section is used to filter air.

[0014] This solution can filter the air before it enters the room, thereby preventing outdoor pollutants from entering the room and ensuring the quality of indoor air.

[0015] Preferably, the filter section comprises at least two filters, and the filters are arranged at intervals or continuously along the air supply direction of the air duct.

[0016] This solution can better intercept pollutants in the air and ensure the cleanliness of indoor air.

[0017] Preferably, the filtering section includes at least one of a coarse-efficiency filter, a medium-efficiency filter and a sub-high-efficiency filter, and the filtering section includes at least one coarse-efficiency filter.

[0018] This proposal recommends three specific filtering structures to be arranged in the filtering section.

[0019] Preferably, at least one of the coarse-efficiency filter, the medium-efficiency filter and the sub-high-efficiency filter is detachably arranged in the filter section.

[0020] This solution can easily form different filtering effects and resistances by using different filter combinations, thereby adapting to environments with different air quality and different power consumption requirements.

[0021] Preferably, the openings of the third air valve, the first air valve, and the fourth air valve are adjustable.

[0022] This solution can not only switch the working mode by turning on and off the third air valve, the first air valve, and the fourth air valve, but also change the ratio of fresh air and return air by adjusting the opening of the third air valve, the first air valve, and the fourth air valve, thereby dynamically adjusting the oxygen concentration regulation effect and indoor temperature control effect of this solution.

[0023] Preferably, the humidifying device includes at least one of an electric heating humidifier, an electrode humidifier, a mist humidifier, and a wet film humidifier.

[0024] This proposal recommends four specific humidification device structures.

[0025] Preferably, the heating device includes a heat exchange coil, a throttle valve, an evaporator and a compressor connected in sequence to form a heat pump cycle; the heat exchange coil is used to exchange heat with the heating and humidifying section; the evaporator is used to exchange heat with the outdoor environment; and an evaporator fan is connected to the evaporator.

[0026] This proposal recommends a specific form of heating device that can transfer outdoor heat to indoors through a heat pump cycle.

[0027] Preferably, the compressor is connected to the heat exchange coil and the evaporator through a four-way reversing valve.

[0028] This solution can switch the working mode of the heat pump cycle by controlling the flow direction of the medium in the compressor through the four-way reversing valve, so that the heat pump cycle can switch between the heating and defrosting conditions.

[0029] Preferably, the air supply fan includes at least one of an EC fan and a variable frequency fan.

[0030] This proposal recommends two specific blower structures.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The utility model provides a heat recovery type indoor environment heat, oxygen and humidity control unit, by respectively arranging an exhaust section, an oxygen production section, a mixing section, a heating and humidifying section and a fan section in the air duct, and providing openable and closable air valves between the exhaust section and the oxygen production section, between the oxygen production section and the outdoor environment, between the oxygen production section and the mixing section, between the mixing section and the outdoor environment, and between the mixing section and the indoor environment. On the one hand, the indoor air can be jointly regulated from three aspects of oxygen concentration, temperature and humidity to meet the requirements of the indoor heat, oxygen and humidity environment; on the other hand, the working mode can be changed by adjusting the working states of each air valve and the heating device and the humidifying device, so as to achieve the purposes of quickly increasing the oxygen concentration, ventilation, recovering the waste heat of the oxygen generator and reducing energy consumption under the corresponding working mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the planar layout structure of a heat recovery indoor environment heat, oxygen and humidity control unit of the utility model;

[0034] Figure 2 This is a schematic diagram of the partial layout structure of a heat recovery indoor environment heat oxygen and humidity control unit of the utility model. Figure 1 ;

[0035] Figure 3 This is a schematic diagram of the partial layout structure of a heat recovery indoor environment heat oxygen and humidity control unit of the utility model. Figure 2 ;

[0036] Figure 4 This is a schematic diagram of the partial layout structure of a heat recovery indoor environment heat oxygen and humidity control unit of the utility model. Figure 3 ;

[0037] Icons: 1-oxygen production section; 2-mixing section; 3-heating and humidification section; 31-heating section; 32-humidification section; 4-fan section; 5-exhaust section; 6-filtration section; 61-first filter; 62-second filter; 7-oxygen generator; 81-exhaust fan; 82-supply fan; 83-evaporator fan; 91-throttle valve; 92-evaporator; 93-compressor; 94-four-way reversing valve;

[0038] 101-First fresh air inlet; 102-Second fresh air inlet; 103-Return air inlet; 104-Supply air inlet; 105-Exhaust air inlet;

[0039] 111-first air valve; 112-second air valve; 113-third air valve; 114-fourth air valve. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be understood as limiting the scope of the present invention to the following embodiments, and all technologies implemented based on the present invention fall within the scope of the present invention.

[0041] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the inventive product / device / apparatus is typically placed when in use. These terms indicating orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians. They do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore should not be construed as limiting the present invention.

[0042] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present invention.

[0043] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0044] In addition, in the description of the embodiments of the present invention, "several," "plurality," and "a number" represent at least two. It can also be any number such as two, three, four, five, six, seven, eight, nine, or even more than nine.

[0045] Furthermore, in the description of the technical solution of the present invention, unless otherwise expressly specified, defined, or limited, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welded, riveted, bolted, threaded, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communicative; they may be direct, indirect via an intermediate medium, or internally connected between two components.

[0046] Example 1

[0047] like Figures 1 to 4 As shown, a heat recovery type indoor environment heat oxygen and humidity control unit includes an air duct, and the air supply direction of the air duct includes an oxygen production section 1, a mixing section 2, a filtering section 6, a heating and humidification section 3 and a fan section 4 connected in sequence. The oxygen production section 1 is also connected to the exhaust section 5;

[0048] The oxygen production section 1 is provided with a first fresh air inlet 101, a first air valve 111 and a second air valve 112. The first fresh air inlet 101 is used to connect to the outdoor environment, the first air valve 111 is connected to the mixing section 2, and the second air valve 112 is connected to the exhaust section 5. The exhaust section 5 is provided with an exhaust fan 81 and an exhaust outlet 105 for connecting to the outdoor environment. When the exhaust fan 81 in the exhaust section 5 is turned on, the gas in the exhaust section 5 can be discharged to the outdoor environment through the exhaust outlet 105; the oxygen production section 1 is provided with an oxygen concentrator 7, the oxygen output port of the oxygen concentrator 7 is connected to the mixing section 2, and the nitrogen output port of the oxygen concentrator 7 is connected to the exhaust section 5;

[0049] The mixing section 2 is provided with a second fresh air inlet 102 and a return air inlet 103; the second fresh air inlet 102 is used to connect to the outdoor environment, and a third air valve 113 is provided at the second fresh air inlet 102; the return air inlet 103 is used to connect to the indoor environment, and a fourth air valve 114 is provided at the return air inlet 103;

[0050] The filtering section 6 is used to filter the air; the heating and humidifying section 3 is provided with a heating device and a humidifying device, the heating device is used to adjust the temperature of the air, and the humidifying device is used to adjust the humidity of the air; the fan section 4 is provided with a blower 82 and an air supply port 104 for connecting to the indoor environment. Turning on the blower 82 in the fan section 4 can allow the gas in the fan section 4 to enter the indoor environment through the air supply port 104.

[0051] exist Figures 1 to 4 middle, Figure 1 This is a schematic diagram of the overall planar layout structure of the heat recovery indoor environment heat, oxygen and humidity control unit of this embodiment. Figure 2 and Figure 3 This is a schematic diagram of the planar layout structure with some heating devices hidden. Figure 4 yes Figure 2 and Figure 3 Schematic diagram of the separate planar layout structure of the heating device not shown in the figure.

[0052] In the above embodiment, the number of oxygen generators 7 can be one or more, and its specific parameters are determined according to the required oxygen flow rate in the room; the oxygen generator 7 can inhale air through the first fresh air inlet 101, and produce oxygen to be transported to the mixing section 2, while the by-product nitrogen is transported to the exhaust section 5, and then discharged from the exhaust port 105 under the drive of the exhaust fan 81 in the exhaust section 5.

[0053] In the above embodiment, the number of filters provided in the filter section 6 may be one or more, and the filters include at least one of a coarse-effect filter, a medium-effect filter and a sub-high-efficiency filter, and the coarse-effect filter, the medium-effect filter and the sub-high-efficiency filter may be connected to the inside of the filter section 6 in a detachable manner, such as a threaded connection, a latch connection, or a mortise and tenon connection, so that the number and type of filters can be flexibly adjusted according to the local outdoor air quality; for example, Figure 2 As shown, two filters are arranged between the mixing section 2 and the heating section 31. The first filter 61 is close to the mixing section 2, including a coarse-efficiency filter; the second filter 62 is close to the heating section 31, including a medium-efficiency filter and / or a sub-high-efficiency filter. No filter may be arranged at the position of the second filter 62 to reduce resistance and further reduce energy consumption.

[0054] In an optional embodiment, the heating and humidifying section 3 includes a heating section 31 and a humidifying section 32, wherein the heating section 31 is arranged close to the mixing section 2, and the humidifying section 32 is arranged close to the fan section 4. Figure 2 shown.

[0055] In an optional embodiment, the humidifying device includes at least one of an electric humidifier, an electrode humidifier, a mist humidifier, and a wet film humidifier, and if used in severe cold and cold areas, the humidifying device must consider anti-freezing measures.

[0056] In an optional embodiment, the heating device includes a heat exchange coil for exchanging heat with the heating section 31, and the heat exchange coil is provided with a working medium inlet, a working medium outlet and a condensate interface; the working medium inlet and the working medium outlet are connected to the throttle valve 91, the evaporator 92, the compressor 93 and the four-way reversing valve 94 in sequence to form a heat pump cycle; the evaporator 92 is used to exchange heat with the outdoor environment; the evaporator 92 is connected to the evaporator fan 83; Figure 4As shown, the four-way reversing valve 94 has four connection ends a, b, c, and d. When there is a demand for heating, the a end of the four-way reversing valve 94 is connected to the b end, and the c end is connected to the d end. The low-temperature and low-pressure working medium is compressed into a high-temperature and high-pressure working medium by the compressor 93, and enters the heat exchange coil of the heating section 31 through the ab channel of the four-way reversing valve 94 to release heat to the air. The condensed working medium liquid then enters the throttle valve 91 for throttling and pressure reduction, and then enters the evaporator 92 to exchange heat with the air and evaporate. Finally, it is sucked into the compressor 93 again through the cd channel of the four-way reversing valve 94 to continue the next cycle. When heating When the mode reaches the defrost condition, the a end of the four-way reversing valve 94 is connected to the c end, and the b end is connected to the d end, the evaporator fan 83 is turned off, and the blower 82 of the fan section 4 runs at a low frequency. The low-temperature and low-pressure working medium is compressed into a high-temperature and high-pressure state by the compressor 93, and enters the evaporator 92 through the ac channel of the four-way reversing valve 94 to provide heat for defrosting. The cooled working medium enters the throttle valve 91 for throttling and pressure reduction, and then enters the heat exchange coil of the heating section 31 to absorb heat in the air. The evaporated working medium enters the compressor 93 through the bd channel of the four-way reversing valve 94, completing a defrost cycle.

[0057] In an optional embodiment, the openings of the third air valve 113 , the first air valve 111 , and the fourth air valve 114 are adjustable.

[0058] In the above embodiment, at least one of the third air valve 113, the first air valve 111, and the fourth air valve 114 is an electrically adjustable air valve, which can automatically adjust the opening size to change the working mode or adjust the ratio of fresh air and return air in the air duct.

[0059] In an optional embodiment, the second air valve 112 is an electric closed air valve. When there is no need to recover the waste heat of the oxygen generator 7, the second air valve 112 is opened and the first air valve 111 is closed to ensure that the oxygen generator 7 can continue to inhale air, discharge nitrogen and dissipate heat for normal operation.

[0060] In an optional embodiment, the blower 82 includes at least one of an EC blower and a variable frequency blower.

[0061] The heat recovery indoor environment heat, oxygen and humidity control unit in this embodiment has the following different working modes to meet different usage requirements:

[0062] Working mode 1: Oxygen supply + fresh return air heating + heat recovery + humidification mode. In this working mode, the third air valve 113 and the second air valve 112 are closed, and the first air valve 111, the fourth air valve 114, the exhaust fan 81 of the exhaust section 5, the compressor 93 and the humidification device are turned on.

[0063] Working mode 2: Oxygen supply + full return air heating + humidification mode. In this working mode, the third air valve 113 and the first air valve 111 are closed, and the fourth air valve 114, the second air valve 112, the exhaust fan 81 of the exhaust section 5, the compressor 93 and the humidification device are turned on.

[0064] Working mode three: oxygen supply + fresh air ventilation + heat recovery mode. In this working mode, the third air valve 113, the fourth air valve 114, the second air valve 112, the compressor 93 and the humidifier are closed, and the first air valve 111 and the exhaust fan 81 of the exhaust section 5 are turned on.

[0065] Working mode 4: oxygen supply + fresh return air ventilation + heat recovery mode. In this working mode, the third air valve 113, the second air valve 112, the compressor 93 and the humidifier are closed, and the first air valve 111, the fourth air valve 114 and the exhaust fan 81 of the exhaust section 5 are opened.

[0066] Working mode five: oxygen supply + fresh return air ventilation + no heat recovery mode. In this working mode, the first air valve 111, the compressor 93 and the humidifier are closed, and the third air valve 113, the fourth air valve 114, the second air valve 112 and the exhaust fan 81 of the exhaust section 5 are opened.

[0067] Working mode six: oxygen supply + fresh air ventilation + no heat recovery mode. In this working mode, the first air valve 111, the fourth air valve 114, the compressor 93 and the humidifier are closed, and the third air valve 113, the second air valve 112 and the exhaust fan 81 of the exhaust section 5 are turned on.

[0068] Working mode seven: oxygen supply + full return air ventilation mode. In this working mode, the third air valve 113, the first air valve 111, the compressor 93 and the humidifying device of the humidifying section 32 are closed, and the fourth air valve 114, the second air valve 112 and the exhaust fan 81 of the exhaust section 5 are opened.

[0069] The above working modes can be switched according to actual use needs. For example, operating modes one to four are used in the winter heating season, and operating modes five to seven are used in the non-heating season. During winter heating, the indoor oxygen concentration is low before the unit is started. In order to quickly increase the oxygen concentration to the target value, the fresh air is not turned on, and heating, humidification and oxygen supply are provided in full return air mode, that is, using working mode two. When the indoor oxygen concentration reaches the target, the fresh air and return air ratio are adjusted to operate, that is, using working mode one. The fresh air enters from the first fresh air inlet 101 of the oxygen production section 1. A part of it is sucked into the oxygen generator 7 to produce oxygen. The oxygen is transported to the mixing section 2 through the pipeline, and the other part is heated by the waste heat of the oxygen generator 7 and enters the mixing section 2. The heated fresh air, oxygen and return air are mixed in the mixing section 2, and then filtered, heated and humidified by the filter section 6, the heating section 31 and the humidification section 32 in sequence. Finally, it is transported to the service room through the air outlet 104 by the blower 82 of the fan section 4. Working mode 3 and working mode 4 are only used at the beginning and end of the heating season when the indoor heat load demand is low. At this time, there is no need to turn on the compressor 93 for heating. The indoor heating demand can be met by recovering the waste heat of the oxygen generator 7 and adjusting the fresh air and return air ratio.

[0070] During the non-heating season, the system first operates in oxygen supply + full return air ventilation mode, i.e., operating mode seven. After the oxygen concentration reaches the target value, the ratio of fresh air to return air is adjusted, and operating mode five or operating mode six is ​​adopted. The fresh air, return air or all-new air is mixed with the oxygen delivered by the oxygen production section 1 in the mixing section 2, and then filtered by the filter section 6, and delivered to the room through the air outlet 104 by the blower 82 of the fan section 4, so as to achieve the purpose of removing residual heat and residual moisture.

[0071] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat recovery indoor environment heat, oxygen and humidity control unit, comprising an air duct, characterized in that: The air duct comprises an oxygen production section (1), a mixing section (2), a heating and humidifying section (3) and a fan section (4) which are connected in sequence, and the oxygen production section (1) is also connected to an exhaust section (5); the oxygen production section (1) is provided with a first fresh air inlet (101), a first air valve (111) and a second air valve (112), the first fresh air inlet (101) is used to connect to the outdoor environment, the first air valve (111) is connected to the mixing section (2), and the second air valve (112) is connected to the exhaust section (5), and the exhaust section (5) is provided with an exhaust fan (81) and an exhaust outlet for connecting to the outdoor environment; an oxygen generator (7) is provided in the oxygen production section (1), the oxygen output port of the oxygen generator (7) is connected to the mixing section (2), and the nitrogen output port of the oxygen generator (7) is connected to the exhaust section (5); the mixing section (2) is provided with a A second fresh air inlet (102) and a return air inlet (103); the second fresh air inlet (102) is used to connect to the outdoor environment, and a third air valve (113) is provided at the second fresh air inlet (102); the return air inlet (103) is used to connect to the indoor environment, and a fourth air valve (114) is provided at the return air inlet (103); a heating device and a humidifying device are provided at the heating and humidifying section (3), the heating device is used to adjust the temperature of the air, and the humidifying device is used to adjust the humidity of the air; the fan section (4) is provided with a blower (82) and an air supply inlet (104) for connecting to the indoor environment.

2. A heat recovery type indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: A filter section (6) is further provided between the mixing section (2) and the fan section (4), and the filter section (6) is used for filtering air.

3. A heat recovery type indoor environment heat, oxygen and humidity control unit according to claim 2, characterized in that: The filtering section (6) comprises at least two filters, and the filters are arranged at intervals or continuously along the air supply direction of the air duct.

4. A heat recovery type indoor environment heat, oxygen and humidity control unit according to claim 3, characterized in that: The filter includes at least one of a coarse-effect filter, a medium-effect filter and a sub-high-efficiency filter, and the filter section (6) includes at least one coarse-effect filter.

5. A heat recovery type indoor environment heat, oxygen and humidity control unit according to claim 4, characterized in that: At least one of the coarse-effect filter, the medium-effect filter and the sub-high-efficiency filter is detachably arranged in the filter section (6).

6. A heat recovery indoor environment heat, oxygen and humidity control unit according to any one of claims 1 to 5, characterized in that: The opening degrees of the third air valve (113), the first air valve (111), and the fourth air valve (114) are adjustable.

7. A heat recovery indoor environment heat, oxygen and humidity control unit according to any one of claims 1 to 5, characterized in that: The humidifying device includes at least one of an electric heating humidifier, an electrode humidifier, a mist humidifier, and a wet film humidifier.

8. A heat recovery indoor environment heat, oxygen and humidity control unit according to any one of claims 1 to 5, characterized in that: The heating device comprises a heat exchange coil, a throttle valve (91), an evaporator (92), and a compressor (93) which are sequentially connected to form a heat pump cycle; the heat exchange coil is used to exchange heat with the heating and humidifying section (3); the evaporator (92) is used to exchange heat with the outdoor environment; and an evaporator fan (83) is connected to the evaporator (92).

9. A heat recovery indoor environment heat, oxygen and humidity control unit according to claim 8, characterized in that: The compressor (93) is connected to the heat exchange coil and the evaporator (92) via a four-way reversing valve.

10. A heat recovery indoor environment heat, oxygen and humidity control unit according to any one of claims 1 to 5, characterized in that: The air blower (82) includes at least one of an EC blower and a variable frequency blower.

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