Indoor'temperature-humidity-oxygen concentration 'regulation and control unit and control method

Abstract

The invention relates to the technical field of air conditioners, and particularly discloses an indoor'temperature-humidity-oxygen concentration 'regulation and control unit and a control method. The regulation and control unit comprises an air conditioner indoor unit and an air conditioner outdoor unit which are connected with the oxygen supply pipe through a refrigerant air pipe and a refrigerant liquid pipe respectively, and the indoor unit and the outdoor unit are integrated with a plurality of components. Through specific connection, a temperature, humidity and oxygen concentration regulation and control channel and a total air circulation channel are formed. The control method comprises the following steps: continuously monitoring indoor parameters through the sensor group, comparing target parameters, controlling corresponding parts to start and stop by the control module, and finely regulating according to a threshold value after reaching the standard. The unit integrates the temperature, humidity and oxygen regulation and control functions, adapts to the plateau low-temperature and low-pressure environment, achieves indoor temperature-humidity-oxygen collaborative optimization, improves the environment comfort, and reduces the equipment cost and energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning, and is particularly applicable to a plateau low-temperature and low-pressure environment, and specifically discloses an indoor temperature-humidity-oxygen concentration regulating unit and operation logic. BACKGROUND

[0002] The Qinghai-Tibet Plateau region has the significant characteristics of cold and dry climate, low air pressure, and insufficient oxygen content in winter. In the prior art, the indoor heating system, the oxygen supply system, and the humidification system are usually independently arranged, which has the problems of complex system structure, high equipment investment and operation cost, and difficulty in taking into account the indoor environmental comfort, low indoor air relative humidity, uneven oxygen concentration distribution, and inability to meet the comprehensive needs of users for the indoor thermal and humid environment and air oxygen content.

[0003] In view of the above problems of the prior art, the present application provides an indoor temperature-humidity-oxygen concentration regulating unit and control method, which is characterized in that a traditional heat pump heating system, an oxygen generating device, and a humidification device are integrated and designed, the indoor air is simultaneously subjected to heating, humidification, and oxygen enrichment by the air supply airflow, and the indoor air environment thermal and humid parameters and oxygen concentration are cooperatively optimized, thereby effectively improving the comprehensive comfort of the indoor air.

[0004] The existing document CN116447658A discloses a building indoor air conditioning system and a multi-parameter control method, which comprises an indoor air conditioner, a filter, a buffer water tank, an electromagnetic water valve, a flower groove, a humidifier, and an oxygen generator. The above technology can realize effective recycling of air conditioning condensate water for flower irrigation, oxygen generation, and humidification, thereby avoiding waste of condensate water resources. The system further comprises a controller, a humidity sensor, an oxygen concentration sensor, a temperature sensor, a humidifier liquid level sensor, an oxygen generator liquid level sensor, a water tank liquid level sensor, an air conditioner switch, a humidifier switch, and an oxygen generator switch. In combination with the electromagnetic water valves, appropriate adjustment thresholds are set to realize automatic closed-loop control and adjustment of indoor temperature, humidity, and oxygen concentration, so that indoor personnel can live and work in a more comfortable air environment while recycling condensate water. However, the building indoor air conditioning system disclosed in the system comprises independent devices of the air conditioner, the humidifier, and the oxygen generator, which are connected through external pipelines, and the controller only realizes simple linkage of the devices. The humidifier and the oxygen generator are not integrated with the air conditioner indoor and outdoor units, and need to separately occupy indoor and outdoor installation spaces, and the pipeline connection is complex.

[0005] The existing patent CN217635983U discloses a cold and hot oxygen combined supply system suitable for plateau areas, which comprises a pressure swing adsorption oxygen generator, an oxygen buffer tank and a combined air conditioning unit. The air inlet end of the pressure swing adsorption oxygen generator is connected with an outdoor air source. The pressure swing adsorption oxygen generator is sequentially connected with the indoor area through the oxygen buffer tank and the air supply pipeline. The air inlet end of the combined air conditioning unit is connected with outdoor fresh air, and the air outlet end is connected with the indoor area through the air supply pipeline. A return air pipeline is arranged between the indoor area and the air inlet end of the combined air conditioning unit, and an adjusting valve is arranged on the return air pipeline. The devices are arranged in the transition area between the outdoor area and the indoor area. The system can not only maintain the indoor suitable temperature and humidity, but also increase the indoor oxygen concentration by 4%-6%, reduce the physiological equivalent altitude by 1200-1800 meters, avoid the human body from having a plateau reaction in the plateau area, has obvious energy-saving effect, and significantly reduces the fire hazard. However, the plateau cold and hot oxygen system disclosed in the document only comprises an oxygen generator and a combined air conditioning unit, does not integrate a humidifying device, and the air conditioning unit and the oxygen generator are separately arranged. The heating capacity calculation does not consider the double attenuation factors of defrosting and low temperature in the plateau, and the heating capacity is insufficient in the Qinghai-Tibet Plateau in winter. SUMMARY

[0006] The purpose of the present application is to overcome the deficiencies in the prior art and provide an indoor "temperature-humidity-oxygen concentration" regulation unit and control method.

[0007] In a first aspect, the present application provides an indoor "temperature-humidity-oxygen concentration" regulation unit.

[0008] The structure of the regulation unit specifically comprises: An air conditioner indoor unit, which is externally provided with an air return port and an air supply port, and internally installed with an oxygen supply port, an indoor heat exchanger and a humidifying device; A sensor group is arranged at the air return port, which comprises a temperature sensor, a humidity sensor and an oxygen concentration sensor; The air conditioner indoor unit has a water storage module, and the humidifying device is immersed in the water storage module; An air conditioner outdoor unit, which is internally installed with a compressor, an outdoor heat exchanger, a throttling device and an oxygen generating device; The air conditioner indoor unit and the air conditioner outdoor unit are connected through the refrigerant gas pipe, the refrigerant liquid pipe and the oxygen supply pipe, respectively; The indoor heat exchanger, the refrigerant gas pipe, the outdoor heat exchanger and the refrigerant liquid pipe are sequentially connected to form a temperature regulation loop, the compressor is arranged on the refrigerant gas pipe, and the throttling device is arranged on the refrigerant liquid pipe; The air return port, the humidifying device and the air supply port are communicated to form a humidity regulation path; The oxygen concentration regulation and control passage is formed by the oxygen production device, the oxygen supply pipe, the oxygen supply port and the air supply port in sequence. The air circulation total passage is formed by the return air port, the indoor heat exchanger and the air supply port in sequence. The control module is further included, which is in communication connection with the humidifying device, the compressor, the oxygen production device and the sensor group respectively.

[0009] Preferably, the indoor heat exchanger is provided with an indoor unit fan, and the outdoor heat exchanger is provided with an outdoor unit fan.

[0010] Preferably, the humidifying mode of the humidifying device is ultrasonic humidification or electrode humidification.

[0011] Preferably, the working mode of the humidifying device is isothermal humidification or constant enthalpy humidification; the isothermal humidification refers to mixing high-temperature steam with air to increase the humidity of the air while keeping the temperature stable; the constant enthalpy humidification refers to evaporating mist droplets at room temperature to increase the humidity of the air while keeping the enthalpy unchanged.

[0012] Preferably, the regulation and control unit further includes a liquid level monitoring device, and the detection section of the liquid level monitoring device is located in the water storage module.

[0013] Preferably, the humidification amount calculation formula of the humidifying device is:

[0014] In the formula, is the humidification amount of the regulation and control unit, and the unit is kilogram per hour; is the indoor wet load of the regulation and control unit in winter, and the unit is gram per second; is the humidification efficiency of the humidifying device, and is dimensionless; is the surplus amount of the humidification amount of the regulation and control unit, and is dimensionless.

[0015] Preferably, the heating capacity calculation of the regulation and control unit combines the correction coefficient and the surplus amount.

[0016] Preferably, the heating capacity calculation formula of the regulation and control unit is:

[0017] In the formula, is the heating capacity of the regulation and control unit, and the unit is kilowatt; is the indoor heat load of the regulation and control unit in winter under the total heat state, and the unit is kilowatt; The correction coefficient of the heat output attenuation of the above-mentioned regulating unit under defrosting condition, dimensionless; The correction coefficient of the heat output attenuation of the above-mentioned regulating unit under highland environment due to the decrease of air density, dimensionless; The correction coefficient of the heat output attenuation of the above-mentioned regulating unit under low-temperature environment, dimensionless; The surplus amount of the heat output of the above-mentioned regulating unit, dimensionless.

[0018] Preferably, the oxygen supply capacity calculation formula of the above-mentioned oxygen supply device is:

[0019] In the formula, The oxygen supply time of the above-mentioned indoor space, in seconds; The oxygen supply time is The oxygen concentration reached in the above-mentioned indoor space, dimensionless; The initial oxygen concentration in the air of the above-mentioned indoor space, dimensionless; The oxygen concentration of mechanical ventilation or natural ventilation, dimensionless; The ventilation volume of mechanical ventilation or natural ventilation, in cubic meters per hour; The volume of the above-mentioned indoor space, in cubic meters; The oxygen flow rate of the oxygen supply end of the above-mentioned indoor space, which is obtained by multiplying the oxygen supply volume flow rate of the above-mentioned regulating unit by the oxygen supply concentration, in cubic meters per hour.

[0020] In the second aspect, the present application provides an indoor "temperature-humidity-oxygen concentration" control method, which is used in the above-mentioned indoor "temperature-humidity-oxygen concentration" regulating unit, and specifically includes: Continuously monitoring the temperature, relative humidity and oxygen concentration; Setting the target temperature, target relative humidity and target oxygen concentration according to the working condition requirements; If the temperature is less than the target temperature, controlling the compressor and the outdoor fan to be turned on; otherwise, controlling the compressor and the outdoor fan to be turned off; If the temperature, relative humidity and oxygen concentration are greater than or equal to the target temperature, target relative humidity and target oxygen concentration respectively, controlling the indoor fan to be turned off; otherwise, controlling the indoor fan to be turned on; If the relative humidity is less than the target relative humidity, the humidifying device is controlled to be turned on; otherwise, the humidifying device is controlled to be turned off. If the oxygen concentration is less than the target oxygen concentration, the oxygen generating device is controlled to be turned on; otherwise, the oxygen generating device is controlled to be turned off.

[0021] Preferably, when the temperature, the relative humidity and the oxygen concentration are first monitored to be greater than or equal to the target temperature, the target relative humidity and the target oxygen concentration respectively, the following steps are entered: According to the working condition requirements, a temperature difference threshold, a humidity difference threshold and an oxygen difference threshold are set. The temperature, the relative humidity and the oxygen concentration are continuously monitored. The indoor unit fan is kept turned on. If the temperature is lower than the target temperature, and the difference between them is greater than the temperature difference threshold, the compressor and the outdoor unit fan are controlled to be turned on; otherwise, the compressor and the outdoor unit fan are controlled to be turned off. If the relative humidity is lower than the target relative humidity, and the difference between them is greater than the humidity difference threshold, the humidifying device is controlled to be turned on; otherwise, the humidifying device is controlled to be turned off. If the oxygen concentration is lower than the target oxygen concentration, and the difference between them is greater than the oxygen difference threshold, the oxygen generating device is controlled to be turned on; otherwise, the oxygen generating device is controlled to be turned off.

[0022] According to the working condition requirements, a target liquid level and a maximum liquid level are preset, and the liquid level of the water storage module is monitored; if the liquid level of the water storage module decreases to the target liquid level, the humidifying device is turned off, the water storage module is watered until the liquid level of the water storage module reaches the maximum liquid level.

[0023] Compared with the prior art, the present application has the following beneficial effects: 1.The present application provides an indoor "temperature-humidity-oxygen concentration" regulating unit, which integrates a heat pump heating system, an oxygen generating system and a humidifying system in the same unit, and connects each executing component by a control module, reducing the number of independent system devices and pipeline redundancy, and avoiding the complex operation of multiple system dispersed installation; by introducing multiple coefficients in the calculation of heating capacity, and combining with the surplus amount to directly correct the heating capacity output of the unit under the special environment of plateau, avoiding the insufficient heating capacity of traditional equipment due to environmental factors; by calculating the required humidifying amount through the humidifying amount formula, directly adapting to different humidification load scenarios, avoiding insufficient or excessive humidification; by accurately calculating the indoor oxygen concentration under different oxygen supply time through the oxygen supply capacity calculation formula, ensuring that the oxygen concentration supplement adapts to the plateau ventilation conditions; ensuring the stability of temperature, humidity and oxygen concentration regulation of the unit under the plateau low temperature and low pressure environment, avoiding indoor parameter fluctuation, meeting the plateau indoor environment demand, realizing the collaborative optimization of indoor "temperature-humidity-oxygen" parameters, ensuring uniform air parameters, and improving the comprehensive comfort of indoor environment.

[0024] 2.The present application provides an indoor "temperature-humidity-oxygen concentration" control method, which communicates with the indoor unit fan, compressor, humidifying device, oxygen generating device, liquid level monitoring device and other components through the control module, realizes the linkage response of each component, improves the intelligence and reliability of the unit operation; and reduces unnecessary energy consumption through two-stage control. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic diagram of an indoor "temperature-humidity-oxygen concentration" regulating unit in embodiment 1.

[0026] Figure 2 It is a schematic diagram of an indoor heat exchanger in embodiment 1.

[0027] Figure 3 It is a schematic diagram of an outdoor heat exchanger in embodiment 1.

[0028] Figure 4 It is an oxygen concentration change curve with time in embodiment 1.

[0029] Markings in the figure: 1-air conditioner indoor unit, 2-air conditioner outdoor unit, 3-refrigerant gas pipe, 4-refrigerant liquid pipe, 5-oxygen supply pipe; 11-return air inlet, 12-air supply inlet, 13-indoor unit fan, 14-oxygen supply inlet, 15-indoor heat exchanger, 16-humidifying device, 17-liquid level monitoring device; 21-compressor, 22-outdoor heat exchanger, 23-outdoor unit fan, 24-throttling device, 25-oxygen generating device, 26-control module. DETAILED DESCRIPTION

[0030] The application will be further described in conjunction with specific embodiments. However, it should not be understood that the scope of the above-mentioned subject matter of the application is limited to the following embodiments. Any technology achieved based on the content of the application falls within the scope of the application.

[0031] In the description of the embodiments of the application, the terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer" and the like are expressed based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product / device / apparatus of the application is usually placed. These terms of orientation or positional relationship are only used for the convenience of describing the application or simplifying the description in the embodiments to facilitate the quick understanding of the scheme by the skilled person, and should not be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship, and therefore should not be understood as a limitation on the application.

[0032] In addition, the terms "horizontal", "vertical", "overhanging", "parallel", "coaxial" and the like do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or overhanging or parallel or coaxial, but can be slightly inclined or deviated, as long as it does not affect the normal function of the related component. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined; "coaxial" means that two components are arranged as coaxial as possible, and are moved in the same or approximately coaxial manner when the relative position changes. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the "horizontal", "vertical", "overhanging", "parallel", "coaxial" direction, and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the application.

[0033] In addition, the terms "first", "second", "third" and the like appearing in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0034] In addition, in the description of the embodiments of the application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, and even more than 9.

[0035] Furthermore, in the description of the technical solutions of the present application, unless otherwise explicitly specified / limited / limited, the terms "provided", "installed", "connected", "connected", "provided", "laid", "arranged" appearing in the description should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, which can be welding, riveting, bolting, screwing and other commonly used connection means in the art. The connection can be mechanical connection, electrical connection or communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication between two elements.

[0036] Embodiment 1 An indoor "temperature-humidity-oxygen concentration" regulating unit.

[0037] The structure of the regulating unit is shown in Figure 1 , specifically comprising: An air conditioner indoor unit 1, the air conditioner indoor unit 1 is externally provided with an air return port 11 and an air supply port 12, and internally installed with an oxygen supply port 14, an indoor heat exchanger 15 and a humidifying device 16; the indoor heat exchanger 15 is shown in Figure 2 ; A sensor group is arranged at the air return port 11, and the sensor group includes a temperature sensor, a humidity sensor and an oxygen concentration sensor; The air conditioner indoor unit 1 has a water storage module, and the humidifying device 16 is immersed in water in the water storage module; An air conditioner outdoor unit 2, the air conditioner outdoor unit 2 is internally installed with a compressor 21, an outdoor heat exchanger 22, a throttling device 24 and an oxygen generating device 25; the outdoor heat exchanger 22 is shown in Figure 3 ; The air conditioner indoor unit 1 and the air conditioner outdoor unit 2 are connected through the refrigerant gas pipe 3, the refrigerant liquid pipe 4 and the oxygen supply pipe 5, respectively; The indoor heat exchanger 15, the refrigerant gas pipe 3, the outdoor heat exchanger 22 and the refrigerant liquid pipe 4 are sequentially connected to form a temperature regulating loop, the compressor 21 is arranged on the refrigerant gas pipe 3, and the throttling device 24 is arranged on the refrigerant liquid pipe 4; The air return port 11, the humidifying device 16 and the air supply port 12 are sequentially connected to form a humidity regulating path; The oxygen generating device 25, the oxygen supply pipe 5, the oxygen supply port 14 and the air supply port 12 are sequentially connected to form an oxygen concentration regulating path; The air return port 11, the indoor heat exchanger 15 and the air supply port 12 are sequentially connected to form an air circulation total path; Also included is a control module 26, which is in communication with the humidifying device 16, the compressor 21, the oxygen generating device 25, and the sensor group.

[0038] The indoor heating function is achieved by a heat pump system composed of the compressor 21, the throttling device 24, the outdoor heat exchanger 22, and the indoor heat exchanger 15 connected in sequence. The outdoor heat exchanger 22 and the indoor heat exchanger 15 are respectively provided with an outdoor unit fan 23 and an indoor unit fan 13 to achieve efficient heat exchange between the refrigerant and the air. The indoor humidifying function is achieved by the humidifying device 16 and the liquid level monitoring device 17. The humidifying device 16 can be an ultrasonic humidifier or an electrode humidifier. The indoor oxygen supply function is achieved by the oxygen generating device 25, the oxygen supply pipe 5, and the oxygen outlet 14.

[0039] When the indoor heating, oxygen supply, and humidifying functions are activated, the indoor air side: the indoor air enters the air conditioner indoor unit 1 from the return air inlet 11, is subjected to isenthalpic or isothermal humidification by the steam generated by the humidifying device 16, is heated by the indoor heat exchanger 15, and then is mixed with the high-concentration oxygen gas output from the oxygen outlet 14 and is delivered to the indoor environment by the indoor unit fan 13 through the air supply outlet 12. Through multiple air circulation, the temperature, humidity, and oxygen concentration of the indoor environment are improved. The high-concentration oxygen gas is generated by the oxygen generating device 25 and is delivered to the air conditioner indoor unit 1 through the oxygen supply pipe 5 and is output from the oxygen outlet 14 and is delivered to the indoor environment by the indoor unit fan 13. The humidifying device 16 can generate normal-temperature steam or high-temperature steam from the water at the bottom of the air conditioner indoor unit 1. The air entering the air conditioner indoor unit 1 from the return air inlet 11 is subjected to humidity increase. The liquid level monitoring device 17 can monitor the liquid level of the water at the bottom of the air conditioner indoor unit 1 in real time. When the water level is low, a low-water alarm signal is transmitted to the control module 26 to shut down the humidifying device.

[0040] When the indoor heating function is activated, the refrigerant side: the low-temperature and low-pressure refrigerant gas is compressed by the compressor 21 into high-temperature and high-pressure refrigerant gas, flows into the indoor heat exchanger 15 of the air conditioner indoor unit 1 through the refrigerant gas pipe 3, condenses and releases heat to the indoor air, cools into low-temperature and high-pressure refrigerant liquid, flows back to the air conditioner outdoor unit 2 through the refrigerant liquid pipe 4, is throttled and depressurized into low-temperature and low-pressure refrigerant liquid by the throttling device 24, and then flows into the outdoor heat exchanger 22, absorbs the heat of the outdoor air, and is again converted into low-temperature and low-pressure refrigerant gas which is sucked into the compressor 21 again.

[0041] When designing the control unit, the heating capacity, humidifying capacity, and oxygen supply capacity of the control unit need to be calculated. The heating capacity calculation formula of the control unit is:

[0042] In the formula, Q is the heating capacity of the control unit, in kilowatts; The above refers to the indoor heat load of the above-mentioned control units under full heating conditions in winter, in kilowatts; The correction factor for the reduction in heating capacity under defrosting conditions is dimensionless and is given for the above-mentioned control units. This is a dimensionless correction factor for the reduction in heating capacity of the aforementioned control units due to the decrease in air density in a high-altitude environment. This is a dimensionless correction factor for the reduction in heating capacity of the aforementioned control units when operating in low-temperature environments. This refers to the surplus heating capacity of the aforementioned regulating units, which is dimensionless.

[0043] The formula for calculating the humidification capacity of the above-mentioned humidification device is as follows:

[0044] In the formula, The humidification capacity of the above-mentioned control unit is expressed in kilograms per hour; The above-mentioned control unit represents the indoor moisture load during winter, expressed in grams per second. The humidification efficiency of the above-mentioned humidification device is dimensionless. This refers to the excess humidification capacity of the aforementioned control units, and is dimensionless.

[0045] The formula for calculating the oxygen supply capacity of the above-mentioned oxygen generating device is as follows:

[0046] In the formula, The oxygen supply time in the above-mentioned room is in seconds; The oxygen supply time is At that time, the oxygen concentration reached in the above-mentioned room was dimensionless; The initial oxygen concentration in the indoor air is given above; it is dimensionless. Oxygen concentration for mechanical or natural ventilation, dimensionless; The ventilation volume, whether mechanical or natural, is expressed in cubic meters per hour. The volume of the above-mentioned interior space is in cubic meters; The oxygen flow rate at the aforementioned indoor oxygen supply terminal is obtained by multiplying the oxygen supply volume flow rate and oxygen concentration of the aforementioned control unit, with the unit being cubic meters per hour.

[0047] The calculation example is as follows: (1) Calculation of heating capacity and humidification capacity: Given the location of the building, the building thermal parameters, the indoor and outdoor design temperature and relative humidity, etc., the indoor thermal load and the moisture load of the room in winter air conditioning can be calculated. Based on the indoor thermal load of the room in winter air conditioning, the required capacity of the heating system can be obtained after considering the defrosting correction of the heating condition, the highland correction, and the outdoor temperature correction. According to the indoor moisture load of the room in winter air conditioning, the humidification mode is determined and the humidification efficiency is considered, and the required capacity of the humidification device can be calculated.

[0048] For example:

[0049] The indoor thermal load of the room in winter air conditioning is 1.837 kW, the defrosting correction coefficient of the unit is 0.986, the highland correction coefficient of the unit is 0.9226, the heat pump can realize slight attenuation of heating capacity at -20℃ low temperature, and considering 10% of the unit's surplus, therefore according to the above heating capacity formula, the unit's design heating capacity is 2.5 kW.

[0050] The indoor moisture load of the room in winter air conditioning is -0.3 g / s, considering using isothermal humidification, the humidifier humidification efficiency is 80% and considering a certain surplus, therefore according to the above humidification capacity formula, the unit's design humidification capacity is 1.5 kg / h.

[0051] In the heating capacity formula, the defrosting correction coefficient refers to the "Practical Heating and Air Conditioning Design Manual", and is determined according to the defrosting period, taking 0.9 for defrosting once per hour, 0.8 for defrosting twice per hour, or according to the selected unit's defrosting control mode, winter air conditioning outdoor design temperature, humidity, which can be provided by the unit production enterprise; the highland correction coefficient is determined according to the altitude and outdoor air temperature, such as taking 0.92 at 4000m altitude and outdoor air temperature -15℃ according to "Sichuan Province Air Source Heat Pump Engineering Technology Standard"; the temperature correction coefficient is determined according to the outdoor environment temperature, and the specific value can be selected according to the product brochure provided by the unit production enterprise; the surplus x1=5%-10%.

[0052] In the humidification capacity formula, the moisture load D is calculated according to the "Code for Design of Heating Ventilation and Air Conditioning of Civil Buildings"; the humidification efficiency y: ultrasonic humidification can take 80%-90%, electrode type humidification can take 70%-80%; the surplus x2=5%-10% to avoid insufficient humidification capacity.

[0053] (2) Calculation of oxygen supply capacity: The area of a room is 22.5 , the height is 3 , the location is Lhasa, the altitude is 3425 According to the requirements of GB / T35414-2017 "Requirements for Diffusion Oxygen Supply (Oxygen Regulation) in Indoor Space in Plateau Area", the oxygen concentration required to reach C level at an altitude of 3500m is 22.3% to 23.4%, and the indoor design oxygen concentration is taken as 22.8%. The oxygen concentration prepared by the oxygen preparation device 25 is 93%, the circulating air volume of the air conditioning unit is 650m 3 / h, the indoor air change rate is taken as 0.5 times / h, and the initial oxygen concentration in the room is generally 21%. According to the above oxygen supply capacity calculation formula, the indoor oxygen concentration reaches the target requirement of 22.8% after 2.5h of unit operation, and the change curve of the indoor oxygen concentration with time is as shown in Figure 4 , and the required capacity of the oxygen preparation device 25 is 30L / min.

[0054] In the oxygen supply capacity formula, the oxygen supply flow unit is m³ / h, and in this embodiment, 30L / min is converted to 1.8m³ / h; the ventilation oxygen concentration: when natural ventilation is taken, the outdoor oxygen concentration in the plateau is taken, and when mechanical ventilation is taken, it is calculated according to y0= outdoor oxygen concentration x fresh air ratio + indoor return air oxygen concentration x (1-fresh air ratio).

[0055] When the regulating unit is in operation, the temperature sensor and the relative humidity sensor arranged at the return air inlet 11 of the air conditioning indoor unit 1 can detect the dry bulb temperature and the relative humidity, respectively. The heat and humidity treatment process of indoor air is a cyclic heating process of isothermal humidification / constant enthalpy humidification and then constant humidity heating, gradually reaching the indoor design temperature and relative parameters. The oxygen concentration sensor arranged at the return air inlet 11 of the air conditioning indoor unit 1 can detect the oxygen concentration in the room.

[0056] The regulating unit controls the opening and closing of each component through the control module 26 in the air conditioning outdoor unit 2 to realize the regulation of each parameter in the room, as shown below: S01: The unit is started, the indoor temperature t, relative humidity φ and oxygen concentration value y at the current time are detected, and compared with the target indoor temperature tm, target relative humidity φm and target oxygen concentration ym; S02: (1) If t<tm, φ<φm, y<ym, the compressor 21 is on, the outdoor unit fan 22 is on, the indoor unit fan 13 is on, the humidifying device 16 is on, and the oxygen preparation device 25 is on.

[0057] (2) If t≥tm, φ<φm, y<ym, the compressor 21 is off, the outdoor unit fan 22 is off, the indoor unit fan 13 is on, the humidifying device 16 is on, and the oxygen preparation device 25 is on.

[0058] (3) If t<tm, φ≥φm, y<ym, the compressor 21 is on, the outdoor unit fan 22 is on, the indoor unit fan 13 is on, the humidifying device 16 is off, and the oxygen preparation device 25 is on.

[0059] (4) If t < tm, φ < φm, and y ≥ ym, the compressor 21 is on, the outdoor unit fan 22 is on, the indoor unit fan 13 is on, the humidifying device 16 is on, and the oxygen generating device 25 is off.

[0060] (5) If t ≥ tm, φ ≥ φm, and y < ym, the compressor 21 is off, the outdoor unit fan 22 is off, the indoor unit fan 13 is on, the humidifying device 16 is off, and the oxygen generating device 25 is on.

[0061] (6) If t ≥ tm, φ < φm, and y ≥ ym, the compressor 21 is off, the outdoor unit fan 22 is off, the indoor unit fan 13 is on, the humidifying device 16 is on, and the oxygen generating device 25 is off.

[0062] (7) If t < tm, φ ≥ φm, and y ≥ ym, the compressor 21 is on, the outdoor unit fan 22 is on, the indoor unit fan 13 is on, the humidifying device 16 is off, and the oxygen generating device 25 is off.

[0063] (8) If t ≥ tm, φ ≥ φm, and y ≥ ym, the compressor 21 is off, the outdoor unit fan 22 is off, the indoor unit fan 13 is off, the humidifying device 16 is off, and the oxygen generating device 25 is off.

[0064] After the indoor temperature, relative humidity, and oxygen concentration meet the requirements, after a period of operation, it is detected that the indoor temperature t, relative humidity φ, and oxygen concentration value y meet the following conditions: (1) When tm-t > 1℃, φ < φm, and y < ym, the compressor 21, the outdoor unit fan 22, and the indoor unit fan 13 are turned on, and the humidifying device 16 and the oxygen generating device 25 are in the off state.

[0065] (2) When t ≥ tm, φm-φ > 2%, and y < ym, the humidifying device 16 and the indoor unit fan 13 are turned on, and the compressor 21, the outdoor unit fan 22, and the oxygen generating device 25 are in the off state.

[0066] (3) When t ≥ tm, φ ≥ φm, and ym-y > 0.2%, the oxygen generating device 25 and the indoor unit fan 13 are turned on, and the compressor 21, the outdoor unit fan 22, and the humidifying device 16 are in the off state.

[0067] (4) When tm-t > 1℃, φm-φ > 2%, and y < ym, the compressor 21, the outdoor unit fan 22, the indoor unit fan 13, and the humidifying device 16 are turned on, and the oxygen generating device 25 is in the off state.

[0068] (5) When tm-t > 1℃, φ < φm, and ym-y > 0.2%, the compressor 21, the outdoor unit fan 22, the indoor unit fan 13, and the oxygen generating device 25 are turned on, and the humidifying device 16 is in the off state.

[0069] (6) When t≥tm, φm-φ> 2%, ym-y> 0.2%, the humidifying device 16, the oxygen generating device 25, and the indoor unit fan 13 are turned on, and the compressor 21 and the outdoor unit fan 22 are in a closed state.

[0070] (7) When tm-t> 1℃, φm-φ> 2%, ym-y> 0.2%, the humidifying device 16, the oxygen generating device 25, the indoor unit fan 13, the compressor 21, and the outdoor unit fan 22 are all turned on.

[0071] In addition, the above-mentioned target liquid level is set to 30% of the total capacity of the water storage module, for example, if the capacity of the water storage module is set to 5L, the target liquid level is set to 1.5L; when the liquid level monitoring device 17 detects that the water level is ≤1.5L, the control module 26 sends a signal to turn on the automatic water replenishment valve, and tap water flows into the water storage module through the pipeline.

[0072] When the liquid level rises to the highest liquid level line 4L, the liquid level monitoring device 17 feeds back a signal to the control module 26, and the above-mentioned automatic water replenishment valve is closed, completing water replenishment; if during the water replenishment process, after the above-mentioned automatic water replenishment valve is turned on, “the liquid level does not rise for 5 minutes”, the control module 26 issues a fault prompt, prompting manual inspection.

Claims

1. An indoor "temperature-humidity-oxygen concentration" conditioning unit, characterized in that, include: An air conditioning indoor unit (1) is provided with an air return vent (11) and an air supply vent (12) on the outside, and an oxygen supply vent (14), an indoor heat exchanger (15) and a humidification device (16) are installed inside. A sensor group is provided at the return air vent (11), the sensor group including a temperature sensor, a humidity sensor and an oxygen concentration sensor; The indoor unit (1) of the air conditioner has a water storage module, and the humidification device (16) is located in the water storage module; An outdoor unit (2) for an air conditioner is provided, which is equipped with a compressor (21), an outdoor heat exchanger (22), a throttling device (24), and an oxygen generator (25). The indoor unit (1) and the outdoor unit (2) of the air conditioner are connected by the refrigerant gas pipe (3), the refrigerant liquid pipe (4), and the oxygen supply pipe (5), respectively. The indoor heat exchanger (15), the refrigerant gas pipe (3), the outdoor heat exchanger (22), and the refrigerant liquid pipe (4) are connected in sequence to form a temperature control loop. The compressor (21) is provided on the refrigerant gas pipe (3), and the throttling device (24) is provided on the refrigerant liquid pipe (4). The return air inlet (11), the humidification device (16), and the air outlet (12) are connected in sequence to form a humidity control path; The oxygen generating device (25), the oxygen supply pipe (5), the oxygen delivery port (14), and the air delivery port (12) are connected in sequence to form an oxygen concentration regulation path. The return air vent (11), the indoor heat exchanger (15), and the air supply vent (12) are connected in sequence to form a main air circulation path; It also includes a control module (26), which is communicatively connected to the humidifier (16), the compressor (21), the oxygen generator (25), and the sensor group.

2. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 1, characterized in that, An indoor unit fan (13) is provided at the indoor heat exchanger (15), and an outdoor unit fan (23) is provided at the outdoor heat exchanger (22); both the indoor unit fan (13) and the outdoor unit fan (23) are communicatively connected to the control module (26).

3. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 1, characterized in that, The humidification method of the humidification device (16) is ultrasonic humidification or electrode humidification.

4. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 1, characterized in that, The control unit also includes a liquid level monitoring device (17), the detection section of which is located in the water storage module.

5. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 4, characterized in that, The formula for calculating the humidification capacity of the humidification device (16) is as follows: In the formula, is the humidification amount of the regulating unit. to the moisture load of the room in winter; a humidification efficiency of the humidification device (16); a surplus amount for the conditioning unit to humidify the air.

6. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 1, characterized in that, The heating capacity calculation of the control unit incorporates a correction factor and a margin.

7. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 6, characterized in that, The formula for calculating the heating capacity of the control unit is as follows: In the formula, is the heating capacity of the regulating unit; to regulate the indoor thermal load of the machine group in winter in total heat condition; A correction factor for the heat output reduction in defrosting is considered for the control unit. a correction coefficient of the heat production attenuation caused by the air density drop in the plateau environment for the regulating unit; a correction coefficient of the heating capacity attenuation when the regulating unit operates in a low temperature environment; to regulate the amount of heat generated by the machine.

8. The indoor temperature-humidity-oxygen concentration regulating unit according to claim 1, characterized in that, The formula for calculating the oxygen supply capacity of the oxygen generating device (25) is as follows: In the formula, is the oxygen supply time in the chamber; for the oxygen supply time is the oxygen concentration reached in the chamber; is the initial oxygen concentration in the indoor air; Oxygen concentration for mechanical or natural ventilation; ventilation quantity for mechanical or natural ventilation; V is the volume of the chamber; The oxygen flow rate for the indoor oxygen supply end.

9. A method of indoor "temperature-humidity-oxygen concentration" control, characterized by, The control method is used in an indoor "temperature-humidity-oxygen concentration" regulating unit as described in claim 2, and the control method includes the following steps: Continuously monitor temperature, relative humidity, and oxygen concentration; Set the target temperature, target relative humidity, and target oxygen concentration according to the operating conditions; If the temperature is lower than the target temperature, control the compressor and outdoor unit fan to turn on; otherwise, control the compressor and outdoor unit fan to turn off. If the temperature, relative humidity and oxygen concentration are greater than or equal to the target temperature, target relative humidity and target oxygen concentration respectively, control the indoor unit fan to be closed; otherwise, control the indoor unit fan to be opened; If the relative humidity is less than the target relative humidity, control the humidifying device to be opened; otherwise, control the humidifying device to be closed; If the oxygen concentration is less than the target oxygen concentration, control the oxygen generating device to be opened; otherwise, control the oxygen generating device to be closed.

10. The method of claim 9, wherein the temperature, humidity, and oxygen concentration are controlled in a room. The control method further comprises: When the temperature, relative humidity and oxygen concentration are greater than or equal to the target temperature, target relative humidity and target oxygen concentration respectively for the first time, enter the following steps: According to the working condition requirement, set the temperature difference threshold, humidity difference threshold and oxygen difference threshold; Continuously monitor the temperature, relative humidity and oxygen concentration; The indoor unit fan remains opened; If the temperature is lower than the target temperature, and the difference between them is greater than the temperature difference threshold, control the compressor and the outdoor unit fan to be opened; otherwise, control the compressor and the outdoor unit fan to be closed; If the relative humidity is lower than the target relative humidity, and the difference between them is greater than the humidity difference threshold, control the humidifying device to be opened; otherwise, control the humidifying device to be closed; If the oxygen concentration is lower than the target oxygen concentration, and the difference between them is greater than the oxygen difference threshold, control the oxygen generating device to be opened; otherwise, control the oxygen generating device to be closed; According to the working condition requirement, preset the target liquid level and the highest liquid level, and monitor the liquid level of the water storage module; if the liquid level of the water storage module drops to the target liquid level, close the humidifying device, and supplement water to the water storage module until the liquid level of the water storage module reaches the highest liquid level.

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