Indoor environment heat, oxygen and humidity regulation and control unit capable of recycling waste heat

Abstract

The utility model relates to the technical field of combined air conditioning units, and provides an indoor environment heat oxygen humidity regulation and control unit for recovering waste heat, which comprises an oxygen generation section, a mixing section, a heating and humidifying section and a fan section which are communicated in sequence, an air inlet structure and a first air valve are arranged on the oxygen generation section, and the first air valve is communicated with the mixing section; an oxygen generator and a partition plate are arranged in the oxygen generation section, and an oxygen output port of the oxygen generator is communicated with the mixing section; the partition plate is used for separating the first air valve from one end, close to the nitrogen outlet, of the oxygenerator; a fresh air inlet and a return air inlet are formed in the mixing section; a second air valve is arranged at the fresh air opening; a third air valve is arranged at the return air inlet; a heating device and a humidifying device are arranged at the heating and humidifying section; and an air feeder and an air supply outlet are arranged at the fan section. The technical problem that in the prior art, an oxygen supply system and a heating / air-conditioning system are separated from each other, the influence of fresh air exchange and mixing of nitrogen into fresh air on the oxygen concentration is not considered, and the indoor oxygen concentration cannot meet the use requirement easily can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of combined air-conditioning units, in particular to an indoor environment heat, oxygen and humidity control unit for recovering waste heat. 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 alone can meet demand during the non-heating 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 oxygen supply is often calculated without outdoor fresh air. Adding fresh air ventilation reduces the oxygen supply system's efficiency in increasing oxygen concentration. Furthermore, there's a risk that nitrogen output from the oxygen supply system can mix with the fresh air and re-enter the room, causing the indoor oxygen concentration to fall below the required level. Utility Model Content

[0003] The purpose of the utility model is to overcome the technical problem in the prior art that the oxygen supply system and the heating / air conditioning system are separated, and the influence of fresh air ventilation and nitrogen mixed into the fresh air on the oxygen concentration is not taken into account, which easily leads to the indoor oxygen concentration failing to meet the use requirements, and to provide an indoor environment heat oxygen and humidity control unit that recovers waste heat.

[0004] In a first aspect, the utility model provides an indoor environment heat oxygen and humidity control unit for recovering waste heat, 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;

[0005] The oxygen production section is provided with an air intake structure and a first air valve, the air intake structure is used to communicate with the outdoor environment, and the first air valve is connected to the mixing section; an oxygen concentrator and a partition are 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 used to communicate with the outdoor environment. The partition is used to separate the first air valve and an end of the oxygen concentrator close to the nitrogen output port;

[0006] The mixing section is provided with a fresh air inlet and a return air inlet; the fresh air inlet is used to connect to the outdoor environment, and a second air valve is provided at the fresh air inlet; the return air inlet is used to connect to the indoor environment, and a third air valve is provided at the return air inlet;

[0007] 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.

[0008] The fan section is provided with an air supply fan and an air supply outlet for connecting to the indoor environment.

[0009] 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 requirements of the indoor heat, oxygen and humidity environment and improve the air quality. In addition, this solution can change the working mode by switching the working status of each air valve and the heating and humidification devices. For example:

[0010] By closing the first air valve and the second 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.

[0011] At the same time, this solution also sets a partition in the oxygen production section to separate the nitrogen output port of the oxygen generator from the first air valve, thereby preventing the nitrogen generated by the oxygen generator from mixing with the fresh air and entering the indoor environment through the first air valve, resulting in the indoor oxygen concentration being unable to meet the use requirements.

[0012] In summary, this solution respectively sets up 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 oxygen production section and the mixing section, between the mixing section and the outdoor environment, and between the mixing section and the indoor environment. A partition that can separate the nitrogen output port and the first air valve is set in the oxygen production section. 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, while avoiding the nitrogen generated by the oxygen concentrator from mixing with the fresh air, resulting in insufficient indoor oxygen concentration; 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 concentrator, and reducing energy consumption under the corresponding working mode.

[0013] Preferably, the air intake structure comprises an air exchange grid.

[0014] This proposal recommends a specific air intake structure that allows air to freely enter the oxygen production section while blocking large foreign objects that are larger than the aperture of the ventilation grid.

[0015] Preferably, the ventilation grid is arranged on the side surface and / or bottom surface of the oxygen production section.

[0016] This solution recommends the installation location of the ventilation grid, which can reduce the situation where foreign objects smaller than the grid aperture, such as dust and rain, fall into the oxygen production section under the action of gravity.

[0017] Preferably, at least one ventilation grid is located on a side of the partition plate close to the oxygen outlet, and at least one ventilation grid is located on a side of the partition plate close to the nitrogen outlet.

[0018] This solution recommends setting up at least one ventilation grid on both sides of the partition to meet the oxygen concentrator's air intake needs, nitrogen discharge needs, and heat dissipation needs, thereby ensuring the continuous and stable operation of the oxygen concentrator.

[0019] Preferably, a filter section is provided between the mixing section and the fan section, and the filter section is used to filter air.

[0020] 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.

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

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

[0023] Preferably, at least one of the first air valve, the second air valve, and the third air valve comprises an electric regulating air valve.

[0024] This solution can automatically adjust the opening size of each air valve to change the working mode or adjust the ratio of fresh air and return air in the air duct.

[0025] Preferably, the humidifying device includes at least one of an electric heating humidifier, an electrode humidifier, a mist humidifier, and a wet film humidifier.

[0026] This proposal recommends four specific humidification device structures.

[0027] Preferably, the heating device includes a heat exchange coil, a throttle valve, an evaporator, a compressor and a four-way reversing valve 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.

[0028] This proposal recommends a specific form of heating device that can transfer outdoor heat to indoors through a heat pump cycle.

[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 an indoor environment heat, oxygen and humidity control unit for recovering waste heat. The unit comprises an oxygen production section, a mixing section, a heating and humidifying section and a fan section, respectively arranged in an air duct, and openable and closable air valves are arranged 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. A partition which can separate the nitrogen output port and the first air valve is arranged in the oxygen production section. On the one hand, the unit can jointly control the indoor air from three aspects of oxygen concentration, temperature and humidity to meet the requirements of the indoor heat, oxygen and humidity environment, while preventing the nitrogen generated by the oxygen generator from mixing into the fresh air, resulting in insufficient indoor oxygen concentration. On the other hand, the unit can change the working mode by adjusting the working states of the air valves, the heating device and the humidifying device, so as to achieve the purposes of quickly increasing the oxygen concentration, ventilating, 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 an indoor environment heat, oxygen and humidity control unit for recovering waste heat in the utility model;

[0034] Figure 2 This is a schematic diagram of the partial layout structure of an indoor environment heat, oxygen and humidity control unit for recovering waste heat in this utility model. Figure 1 ;

[0035] Figure 3 This is a schematic diagram of the partial layout structure of an indoor environment heat, oxygen and humidity control unit for recovering waste heat in this utility model. Figure 2 ;

[0036] Figure 4 This is a schematic diagram of the partial layout structure of an indoor environment heat, oxygen and humidity control unit for recovering waste heat in this utility model. Figure 3 ;

[0037] Icons: 1-oxygen production section; 11-partition; 12-ventilation grid; 2-mixing section; 3-heating and humidification section; 31-heating section; 32-humidification section; 4-fan section; 5-filtration section; 51-first filter; 52-second filter; 6-oxygen generator; 71-air blower; 72-evaporator fan; 81-throttle valve; 82-evaporator; 83-compressor; 84-four-way reversing valve;

[0038] 101-Fresh air inlet; 102-Return air inlet; 103-Supply air inlet;

[0039] 111-first air valve; 112-second air valve; 113-third 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, an indoor environment heat oxygen and humidity control unit for recovering waste heat includes an air duct, which includes an oxygen production section 1, a mixing section 2, a filtering section 5, a heating and humidification section 3 and a fan section 4 connected in sequence.

[0048] The oxygen production section 1 is provided with an air intake structure and a first air valve 111. The air intake structure is used to communicate with the outdoor environment, and the first air valve 111 is connected to the mixing section 2. An oxygen concentrator 6 and a partition 11 are provided in the oxygen production section 1. The oxygen output port of the oxygen concentrator 6 is connected to the mixing section 2, and the nitrogen output port of the oxygen concentrator 6 is used to communicate with the outdoor environment. The partition 11 is used to separate the first air valve 111 from the end of the oxygen concentrator 6 close to the nitrogen output port.

[0049] The mixing section 2 is provided with a fresh air inlet 101 and a return air inlet 102; the fresh air inlet 101 is used to connect to the outdoor environment, and a second air valve 112 is provided at the fresh air inlet 101; the return air inlet 102 is used to connect to the indoor environment, and a third air valve 113 is provided at the return air inlet 102; the filtering section 5 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 71 and an air inlet 103 for connecting to the indoor environment. Turning on the blower 71 in the fan section 4 can allow the gas in the fan section 4 to enter the indoor environment through the air inlet 103.

[0050] exist Figures 1 to 4 middle, Figure 1 This is a schematic diagram of the overall planar layout structure of the indoor environment heat, oxygen and humidity control unit for recovering waste heat in 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.

[0051] In the above embodiment, the number of oxygen generators 6 can be one or more, and its specific parameters are determined according to the required oxygen flow rate in the room; the oxygen generator 6 can inhale air through the air intake structure and produce oxygen to be transported to the mixing section 2.

[0052] In an optional embodiment, the air intake structure includes at least one of an air inlet and an air intake pipe; for example, the air intake structure may include a ventilation grille 12, and the specific form of the ventilation grille 12 includes but is not limited to a mesh grille and a louver ventilation grille.

[0053] In an optional embodiment, the specific arrangement of the partition 11 is as follows: Figure 2 Taking the case where the oxygen concentrator 6 is provided with an oxygen outlet at the upper part and a nitrogen outlet at the lower part as an example, the oxygen concentrator section 1 can be divided into two upper and lower chambers by a partition 11, and a mounting groove having a shape matching the cross-sectional shape of the oxygen concentrator 6 is provided on the partition 11, so that the oxygen concentrator 6 passes through the mounting groove, and the seal between the mounting groove and the oxygen concentrator 6 and the seal between the side of the partition 11 and the inner side wall of the oxygen concentrator section 1 are well ensured, so that the upper part of the oxygen concentrator 6 is located in the upper chamber of the oxygen concentrator section 1, and the lower part of the oxygen concentrator 6 is located in the lower chamber of the oxygen concentrator section 1, thereby confining the nitrogen in the lower chamber to prevent the nitrogen from mixing with the fresh air.

[0054] In an optional embodiment, if Figure 2 As shown, the ventilation grid 12 is arranged on the side surface and / or bottom surface of the oxygen production section 1.

[0055] In an optional embodiment, if Figure 2 As shown, at least one ventilation grid 12 is located on a side of the partition plate 11 close to the oxygen outlet, and at least one ventilation grid 12 is located on a side of the partition plate 11 close to the nitrogen outlet.

[0056] In an optional embodiment, the number of filters provided in the filter section 5 may be one or more, and the filters may 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 5 in a detachable manner, such as a threaded connection, a latch connection, or a mortise and tenon connection, so that the number and model of the filters can be flexibly adjusted according to the local outdoor air quality; for example, Figure 2 As shown, two filter sections are set between the mixing section 2 and the heating section 31. The first filter 51 is close to the mixing section 2, including a coarse-effect filter; the second filter 52 is close to the heating section 31, including a medium-efficiency filter and / or a sub-high-efficiency filter. No filter may be set at the second filter 52 to reduce resistance and further reduce energy consumption.

[0057] In an optional embodiment, the openings of the first air valve 111 , the second air valve 112 , and the third air valve 113 are adjustable.

[0058] In an optional embodiment, at least one of the first air valve 111, the second air valve 112, and the third air valve 113 includes an electrically adjustable air valve, so that the opening size can be automatically adjusted 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 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 .

[0060] 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.

[0061] 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 81, the evaporator 82, the compressor 83 and the four-way reversing valve 84 in sequence to form a heat pump cycle; the evaporator 82 is used to exchange heat with the outdoor environment; the evaporator 82 is connected to the evaporator fan 72; Figure 4 As shown, the four-way reversing valve 84 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 84 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 83, and enters the heat exchange coil of the heating section 31 through the ab channel of the four-way reversing valve 84 to release heat to the air. The condensed working medium liquid then enters the throttle valve 81 for throttling and pressure reduction, and then enters the evaporator 82 to exchange heat with the air and evaporate. Finally, it is sucked into the compressor 83 again through the cd channel of the four-way reversing valve 84 to continue the next cycle. When heating When the mode reaches the defrost condition, the a end of the four-way reversing valve 84 is connected to the c end, and the b end is connected to the d end, the evaporator fan 72 is turned off, and the blower 71 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 83, and enters the evaporator 82 through the ac channel of the four-way reversing valve 84 to provide heat for defrosting. The cooled working medium enters the throttle valve 81 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 83 through the bd channel of the four-way reversing valve 84, completing a defrost cycle.

[0062] In an optional embodiment, the air blower 71 includes at least one of an EC fan and a variable frequency fan.

[0063] 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:

[0064] Working mode 1: oxygen supply + new return air heating + heat recovery + humidification mode. In this working mode, the second air valve 112 is closed, the first air valve 111 and the third air valve 113 are partially opened, and the compressor 83 and the humidification device are turned on.

[0065] Working mode 2: Oxygen supply + full return air heating + humidification mode. In this working mode, the first air valve 111 and the second air valve 112 are closed, the third air valve 113 is fully opened, and the compressor 83 and the humidification device are turned on.

[0066] Working mode three: oxygen supply + fresh air ventilation + heat recovery mode. In this working mode, the second air valve 112 and the third air valve 113 are closed, the first air valve 111 is fully opened, and the compressor 83 and the humidifier are turned off.

[0067] Working mode 4: oxygen supply + fresh return air ventilation + heat recovery mode. In this working mode, the second air valve 112 is closed, the first air valve 111 and the third air valve 113 are partially opened, and the compressor 83 and the humidifier are turned off.

[0068] Working mode five: oxygen supply + fresh return air ventilation + no heat recovery mode. In this working mode, the first air valve 111 is closed, the second air valve 112 and the third air valve 113 are partially opened, and the compressor 83 and the humidifier are turned off.

[0069] Working mode six: with oxygen supply + fresh air ventilation + no heat recovery mode. In this working mode, the first air valve 111 and the third air valve 113 are closed, the second air valve 112 is fully opened, and the compressor 83 and the humidifier are turned off.

[0070] Working mode seven: oxygen supply + full return air ventilation mode. In this working mode, the first air valve 111 and the second air valve 112 are closed, the third air valve 113 is fully opened, and the compressor 83 and the humidifier are turned off.

[0071] During the winter heating season, operating modes 1 to 4 are used, while during the non-heating season, operating modes 5 to 7 are used. During winter heating, the indoor oxygen concentration is low before the unit is started. To quickly raise 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, i.e., operating mode 2 is used. When the indoor oxygen concentration reaches the target, the fresh air and return air ratio is adjusted, i.e., operating mode 1 is used. Fresh air enters through the ventilation grilles 12 around the oxygen production section 1. A portion of it is sucked in by the oxygen generator 6 to produce oxygen, which is then transported to the mixing section 2 via a pipeline. The remaining portion is heated by the waste heat of the oxygen generator 6 and then enters the mixing section 2. In the mixing section 2, the heated fresh air, oxygen, and return air are mixed, and then sequentially filtered, heated, and humidified by the coarse filter section 5, the heating section 31, and the humidification section 32. Finally, the fresh air is transported to the service room through the air outlet 103 by the blower 71 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 start the compressor 83 for heating. The indoor heating demand can be met by recovering the waste heat of the oxygen generator 6 and adjusting the fresh air and return air ratio.

[0072] During the non-heating season, the ventilation mode is oxygen supply + full return air, i.e., working mode seven. After the oxygen concentration reaches the target value, the ratio of fresh air to return air is adjusted, and working mode five or working mode six is ​​adopted. The fresh air, return air or fresh air are mixed with the oxygen delivered by the oxygen production section 1 in the mixing section 2, and then filtered by the filter section 5. It is then delivered to the room through the air outlet 103 by the blower 71 of the fan section 4 to achieve the purpose of removing residual heat and residual moisture.

[0073] 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. An indoor environment heat, oxygen and humidity control unit for recovering waste heat, 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; an air intake structure and a first air valve (111) are provided on the oxygen production section (1); the air intake structure is used to communicate with the outdoor environment, and the first air valve (111) is connected with the mixing section (2); an oxygen concentrator (6) and a partition (11) are provided in the oxygen production section (1); the oxygen output port of the oxygen concentrator (6) is connected with the mixing section (2), and the nitrogen output port of the oxygen concentrator (6) is used to communicate with the outdoor environment, and the partition (11) is used to separate the first air valve (111) from an end of the oxygen concentrator (6) close to the nitrogen output port; The mixing section (2) is provided with a fresh air inlet (101) and a return air inlet (102); the fresh air inlet (101) is used to connect to the outdoor environment, and a second air valve (112) is provided at the fresh air inlet (101); the return air inlet (102) is used to connect to the indoor environment, and a third air valve (113) is provided at the return air inlet (102); 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 (71) and an air outlet (103) for communicating with the indoor environment.

2. The indoor environment heat, oxygen and humidity control unit for recovering waste heat according to claim 1, characterized in that: The air intake structure includes an air exchange grid (12).

3. The indoor environment heat, oxygen and humidity control unit for recovering waste heat according to claim 2, characterized in that: The ventilation grid (12) is arranged on the side surface and / or bottom surface of the oxygen production section (1).

4. The indoor environment heat, oxygen and humidity control unit for recovering waste heat according to claim 2, characterized in that: At least one of the ventilation grids (12) is located on a side of the partition (11) close to the oxygen outlet, and at least one of the ventilation grids (12) is located on a side of the partition (11) close to the nitrogen outlet.

5. The indoor environment heat, oxygen and humidity control unit for recovering waste heat according to any one of claims 1 to 4, characterized in that: A filter section (5) is further provided between the mixing section (2) and the fan section (4), and the filter section (5) is used for filtering air.

6. An indoor environment heat, oxygen and humidity control unit for recovering waste heat according to any one of claims 1 to 4, characterized in that: The opening degrees of the first air valve (111), the second air valve (112), and the third air valve (113) are adjustable.

7. The indoor environment heat, oxygen and humidity control unit for recovering waste heat according to claim 6, characterized in that: At least one of the first air valve (111), the second air valve (112), and the third air valve (113) comprises an electrically adjustable air valve.

8. An indoor environment heat, oxygen and humidity control unit for recovering waste heat according to any one of claims 1 to 4, 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.

9. An indoor environment heat, oxygen and humidity control unit for recovering waste heat according to any one of claims 1 to 4, characterized in that: The heating device comprises a heat exchange coil, a throttle valve (81), an evaporator (82), a compressor (83) and a four-way reversing valve (84) 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 (82) is used to exchange heat with the outdoor environment; and the evaporator (82) is connected to an evaporator fan (72).

10. An indoor environment heat, oxygen and humidity control unit for recovering waste heat according to any one of claims 1 to 4, characterized in that: The air blower (71) includes at least one of an EC blower and a variable frequency blower.

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