Indoor environment heat, oxygen and humidity regulation and control unit

Abstract

The utility model relates to the field of combined air conditioning units, in particular to an indoor environment heat, oxygen and humidity regulation and control unit which comprises a mixing section, a filtering section, a heating section, a humidifying section, an oxygen supply section and a fan section which are communicated in sequence. The mixing section is provided with a fresh air port and a return air port, the fresh air port is provided with a first air valve, and the return air port is provided with a second air valve; the filtering section is provided with a filter; the heating section is provided with a heat exchange coil pipe, and a working medium inlet of the heat exchange coil pipe forms heat pump circulation with a throttling valve, an evaporator, a heat pump compressor, a four-way reversing valve and a working medium outlet of the heat exchange coil pipe in sequence; the humidifying section is used for humidifying air; the oxygen supply section is provided with an oxygen supply port; and the fan section is provided with a fan and an air supply outlet. Under the condition that fresh air exchange is considered, the indoor air temperature, the oxygen concentration, the humidity and the pollutant concentration of a building are jointly regulated and controlled so as to meet the requirements of the existing indoor hot-oxygen-humidity environment, and the indoor air quality is improved.

Description

Technical Field

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

[0002] In the harsh winters of plateaus and other cold regions, the outdoor air is thin, cold, and dry. Heating loads dominate year-round, with cooling loads minimal, and ventilation alone can meet these demands. Traditional approaches to addressing indoor temperature, humidity, and oxygen concentration separate the heating / air conditioning system from the oxygen supply 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. Over time, this can lead to increased indoor air pollutants, odors, and dry air. Furthermore, increasing fresh air ventilation can also result in insufficient indoor oxygen concentrations due to the under-equipped oxygen supply system. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide an indoor environment heat, oxygen and humidity control unit. Taking into account the fresh air ventilation, the indoor air temperature, oxygen concentration, humidity and pollutant concentration of the building are jointly controlled to meet the current indoor heat, oxygen and humidity environment requirements and improve the indoor air quality.

[0004] In a first aspect, the utility model provides an indoor environment heat, oxygen and humidity control unit, comprising a mixing section, a filtering section, a heating section, a humidifying section, an oxygen supply section, and a fan section connected in sequence;

[0005] The mixing section is provided with a fresh air inlet and a return air inlet, the fresh air inlet is provided with a first air valve, and the return air inlet is provided with a second air valve;

[0006] The filtering section is provided with a filter;

[0007] The heating section is provided with a heat exchange coil, and the working medium inlet of the heat exchange coil is sequentially connected with the throttle valve, evaporator, heat pump compressor, four-way reversing valve and the working medium outlet of the heat exchange coil to form a heat pump cycle;

[0008] The humidifying section is used to humidify the air;

[0009] The oxygen supply section is provided with an oxygen supply port;

[0010] The fan section is provided with a fan and an air supply port.

[0011] Preferably, the first air valve and the second air valve are both electrically adjustable air valves.

[0012] Preferably, the filtering section comprises a coarse filtering section, and the coarse filtering section is provided with a coarse filter.

[0013] Preferably, the filtration section further includes a medium efficiency / sub-high efficiency filtration section, the medium efficiency / sub-high efficiency filtration section is provided with a medium efficiency / sub-high efficiency filter, and the coarse efficiency filtration section and the medium efficiency / sub-high efficiency filtration section are arranged in sequence.

[0014] Preferably, an evaporator fan is connected to the upper portion of the evaporator.

[0015] Preferably, the heat exchange coil is further provided with a condensate water interface.

[0016] Preferably, the humidification section adopts electric heating humidification, electrode humidification, high-pressure mist humidification or wet film humidification.

[0017] Preferably, the fan section adopts an EC fan or a variable frequency fan.

[0018] Preferably, it further comprises an oxygen production section, in which an oxygen concentrator is provided, and the oxygen produced by the oxygen concentrator is transported to the oxygen supply section.

[0019] Preferably, grids are provided around and on the bottom of the oxygen production section.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The utility model provides an indoor environment heat, oxygen and humidity control unit, which has five operating modes: oxygen supply + fresh return air heating + humidification (operating mode 1), oxygen supply + full return air heating + humidification (operating mode 2), oxygen supply + fresh air ventilation (operating mode 3), oxygen supply + fresh return air ventilation (operating mode 4), and oxygen supply + full return air ventilation (operating mode 5). Taking fresh air ventilation into consideration, the indoor air temperature, oxygen concentration, humidity and pollutant concentration of the building are jointly controlled to meet the current indoor heat, oxygen and humidity environment requirements and improve the indoor air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of the indoor environment heat, oxygen and humidity control unit described in the present utility model.

[0023] Markings in the figure:

[0024] 1-Mixing section, 2-Coarse-efficiency filtration section, 3-Medium-efficiency / sub-high-efficiency filtration section, 4-Heating section, 5-Humidification section, 6-Oxygen supply section, 7-Fan section, 8-Oxygen production section, 9-First air valve, 10-Second air valve, 11-Supply air outlet, 12-Fresh air outlet, 13-Return air outlet, 14-Heat pump compressor, 15-Four-way reversing valve, 16-Throttle valve, 17-Evaporator, 18-Evaporator fan, 19-Grille. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0026] 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 product / device / apparatus of the present invention 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.

[0027] 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", and "parallel", 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 utility model.

[0028] In addition, the expressions "first", "second", "third", etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0029] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0030] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0031] Example 1

[0032] like Figure 1 As shown, an indoor environment heat, oxygen and humidity control unit includes a mixing section 1, a filtering section, a heating section 4, a humidifying section 5, an oxygen supply section 6, and a fan section 7 which are connected in sequence.

[0033] The mixing section 1 is provided with a fresh air inlet 12 and a return air inlet 13. The fresh air inlet 12 is provided with a first air valve 9, and the return air inlet 13 is provided with a second air valve 10. The first air valve 9 and the second air valve 10 function to adjust the air volume ratio between the fresh air inlet 12 and the return air inlet 13, or to close one of the fresh air inlet 12 and the return air inlet 13, to match the switching between different operating modes of the unit. Preferably, both the first air valve 9 and the second air valve 10 are electrically adjustable air valves for easy adjustment.

[0034] The filtration section is provided with a filter for controlling the indoor pollutant concentration. Different filters can be adapted according to different requirements for indoor air quality and the quality of outdoor air. In some preferred embodiments, the filtration section may include a coarse filter section 2, and the coarse filter section 2 is provided with a coarse filter. It is also possible to further set a medium efficiency / sub-high efficiency filter after the coarse filter, that is, a medium efficiency / sub-high efficiency filter section 3 can also be set, and the medium efficiency / sub-high efficiency filter section 3 is provided with a medium efficiency / sub-high efficiency filter, and the medium efficiency / sub-high efficiency filter section 3 is set in sequence. The different variable resistance operation set by the medium efficiency / sub-high efficiency filter section 3 reduces the energy consumption of the fan.

[0035] The heating section 4 is equipped with a heat exchange coil having a working fluid inlet, a working fluid outlet, and a condensate connection. The working fluid inlet of the heat exchange coil is sequentially connected to the throttle valve 16, the evaporator 17, the heat pump compressor 14, the four-way reversing valve 15, and the working fluid outlet of the heat exchange coil to form a heat pump cycle. Furthermore, an evaporator fan 18 can be connected to the top of the evaporator 17.

[0036] When there is a demand for heating, the a end of the four-way reversing valve 15 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 heat pump compressor 14, and enters the heat exchange coil of the heating section 4 through the ab channel of the four-way reversing valve 15 to release heat to the air. The condensed working medium liquid then enters the throttle valve 16 for throttling and pressure reduction, and then enters the evaporator 17 to exchange heat with the air and evaporate. Finally, it is sucked into the heat pump compressor 14 again through the cd channel of the four-way reversing valve 15 to continue the next cycle. When the heating mode reaches the defrost condition, the a end of the four-way reversing valve 15 is connected to the c end, and the b end is connected to the d end, the evaporator fan 18 is turned off, and the fan of the fan section 7 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 heat pump compressor 14, and enters the evaporator 17 through the ac channel of the four-way reversing valve 15 to provide heat for defrosting. The cooled working medium enters the throttle valve 16 for throttling and pressure reduction, and then enters the heat exchange coil of the heating section 4 to absorb heat from the air. The evaporated working medium enters the heat pump compressor 14 through the bd channel of the four-way reversing valve 15, completing a defrost cycle.

[0037] The humidifying section 5 is used to humidify the air. The humidifying section 5 adopts one of the humidifying methods such as electric heating humidification, electrode humidification, high-pressure mist humidification or wet film humidification. When used in severe cold and cold areas, the humidifying section 5 needs to consider anti-freezing measures.

[0038] The oxygen supply section 6 is provided with an oxygen supply port, and oxygen can be taken out by an oxygen generator, transported to this section by a pipeline, mixed into the treated air, and then inhaled by a fan.

[0039] The fan section 7 is equipped with a fan and an air outlet 11. The treated air mixed with oxygen is sucked in and pressurized by the fan, and then delivered to the service room through the upper air outlet 11 and the air duct. Preferably, the fan section 7 uses an EC fan or a variable frequency fan.

[0040] In a preferred embodiment, the unit may further include an oxygen production section 8, which is equipped with an oxygen concentrator. The oxygen produced by the oxygen concentrator is transported to the oxygen supply section 6. Air is inhaled by the oxygen concentrator, and the produced oxygen is transported to the oxygen supply section 6 via a pipeline. Nitrogen is discharged from the bottom of the oxygen concentrator. Grilles 19 may be provided around and at the bottom of the oxygen concentrator 8 to ensure that the oxygen concentrator can continue to operate normally (air intake, nitrogen discharge, and heat dissipation). The number of oxygen concentrators is selected based on the required oxygen flow rate in the room. The layout is not limited to the right side of the fan section. If multiple oxygen concentrators are installed, they can be arranged on the right or bottom side.

[0041] The utility model provides an indoor environment heat, oxygen and humidity control unit, which has five operating modes: oxygen supply + fresh return air heating + humidification (operating mode 1), oxygen supply + full return air heating + humidification (operating mode 2), oxygen supply + fresh air ventilation (operating mode 3), oxygen supply + fresh return air ventilation (operating mode 4), and oxygen supply + full return air ventilation (operating mode 5).

[0042] In operation mode 1, the first air valve 9 and the second air valve 10 are partially opened, and the heat pump compressor 14 and the humidifying device of the humidifying section 5 are turned on.

[0043] In operation mode 2, the first air valve 9 is closed, the second air valve 10 is fully opened, and the heat pump compressor 14 and the humidifying device of the humidifying section 5 are turned on.

[0044] In operation mode 3, the first air valve 9 is fully opened, the second air valve 10 is closed, and the heat pump compressor 14 and the humidifying device of the humidifying section 5 are turned off.

[0045] In operation mode 4, the first air valve 9 and the second air valve 10 are partially opened, and the heat pump compressor 14 and the humidifying device of the humidifying section 5 are closed.

[0046] In operation mode 5, the first air valve 9 is closed, the second air valve 10 is fully opened, and the heat pump compressor 14 and the humidifying device of the humidifying section 5 are turned off.

[0047] Operation modes 1 and 2 are used during the winter heating season, and operation modes 3, 4, and 5 are used during the non-heating season. During winter heating, for example, if the indoor oxygen concentration is 21% before the unit is started, in order to quickly raise the oxygen concentration to the target value, the fresh air is not turned on, and heating, humidification, and oxygenation are provided in full return air mode (operation mode 2). When the indoor oxygen concentration reaches the target, the fresh air return air ratio is adjusted to operate (operation mode 1). The fresh air and return air are mixed in the mixing section 1, and then filtered, heated, humidified, and oxygenated in the coarse-efficiency filtration section 2, medium-efficiency / sub-high-efficiency filtration section 3, heating section 4, humidification section 5, and oxygen supply section 6 in sequence. Finally, the fan of the fan section 7 and the air outlet 11 deliver the air to the service room.

[0048] During the non-heating season, the system is first operated in oxygen supply + full return air ventilation mode (operation mode 5). After the oxygen concentration reaches the target value, the proportion of new return air is adjusted and operation mode 3 or operation mode 4 is adopted. The new return air or fresh air is filtered through the coarse-efficiency filter section 2 and the medium-efficiency / sub-high-efficiency filter section 3, and then mixed with the oxygen from the oxygen supply section 6 and transported to the room by the fan of the fan section 7 to achieve the purpose of removing excess heat and excess moisture.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements 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, characterized in that: It comprises a mixing section (1), a filtering section, a heating section (4), a humidifying section (5), an oxygen supply section (6), and a fan section (7) which are connected in sequence; The mixing section (1) is provided with a fresh air inlet (12) and a return air inlet (13); the fresh air inlet (12) is provided with a first air valve (9), and the return air inlet (13) is provided with a second air valve (10); The filtering section is provided with a filter; The heating section (4) is provided with a heat exchange coil, and the working medium inlet of the heat exchange coil is sequentially connected with the throttle valve (16), the evaporator (17), the heat pump compressor (14), the four-way reversing valve (15) and the working medium outlet of the heat exchange coil to form a heat pump cycle; The humidifying section (5) is used to humidify the air; The oxygen supply section (6) is provided with an oxygen supply port; The fan section (7) is provided with a fan and an air supply port (11).

2. An indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: The first air valve (9) and the second air valve (10) are both electrically adjustable air valves.

3. The indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: The filtering section comprises a coarse filtering section (2), and the coarse filtering section (2) is provided with a coarse filter.

4. The indoor environment heat, oxygen and humidity control unit according to claim 3, characterized in that: The filtering section further comprises a medium efficiency / sub-high efficiency filtering section (3), wherein the medium efficiency / sub-high efficiency filtering section (3) is provided with a medium efficiency / sub-high efficiency filter, and the coarse efficiency filtering section (2) and the medium efficiency / sub-high efficiency filtering section (3) are arranged in sequence.

5. The indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: The upper portion of the evaporator (17) is connected to an evaporator fan (18).

6. The indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: The heat exchange coil is also provided with a condensate water interface.

7. The indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: The humidification section (5) adopts electric heating humidification, electrode humidification, high-pressure micro-mist humidification or wet film humidification.

8. The indoor environment heat, oxygen and humidity control unit according to claim 1, characterized in that: The fan section (7) adopts an EC fan or a variable frequency fan.

9. An indoor environment heat, oxygen and humidity control unit according to any one of claims 1 to 8, characterized in that: It also includes an oxygen production section (8), in which an oxygen generator is provided. The oxygen produced by the oxygen generator is transported to the oxygen supply section (6).

10. An indoor environment heat, oxygen and humidity control unit according to claim 9, characterized in that: Grilles (19) are provided around and on the bottom of the oxygen production section (8).

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