Air conditioning system and air conditioning method

Abstract

The present disclosure provides an air conditioning system and method. The air conditioning system includes: an upstream temperature detection unit for detecting a first temperature T1 of the inhaled air; a target absolute humidity storage unit for storing a target absolute humidity H2 of a target value of the absolute humidity of a target space; and further includes: a humidification amount control unit for controlling a humidification amount G such that the absolute humidity of the inhaled air reaches above the target absolute humidity H2; a downstream temperature calculation unit for calculating a second temperature T2 at which the humidification amount G is obtained; a first temperature control unit for controlling the temperature of the air at the first temperature T1 to the second temperature T2; a humidifying unit for humidifying the air controlled to the second temperature T2 with the humidification amount G; and a blowing unit for blowing the humidified air into the target space. The advantage of the present disclosure is that it can improve the accuracy of adjusting humidity and temperature.

Description

Technical Field

[0001] The present disclosure relates to an air conditioning system and an air conditioning method which are used in a general home or office and can humidify the air. Background Art

[0002] When introducing outdoor air with a temperature difference with the indoor air, the air conditioning system of the prior art will detect the temperature difference △T between the air temperature before entering the heating device and the air temperature after passing through the heating device by setting a PTC heating device and using temperature sensors respectively set on the upstream and downstream sides of the heating device, and adjust the output power of the humidifying device accordingly. In other words, the air entering from the outside is preheated to reduce the temperature difference between the air entering from the outside and the indoor air. However, when the air conditioning system is heating, the indoor air will become dry. Therefore, in order to adjust the temperature, the air conditioning system of the prior art adjusts the humidity of the air by setting a wet film humidifying device. That is, by starting the humidifying device, the preheated air can be made moist, thereby suppressing the decrease in indoor humidity.

[0003] However, the amount of water vapor that can be contained in the air (i.e., the amount of saturated water vapor) will change according to the temperature. Therefore, in the above process, when the heated air enters the humidifier, the amount of water vapor that can be contained in the air with a higher temperature increases (i.e., the amount of saturated water vapor in the heated air increases), so the humidity of the air after passing through the wet film humidifier will exceed the required humidity of the indoor air. In other words, the increase in the amount of saturated water vapor in the heated air may cause the humidity of the indoor air to exceed the required humidity. Therefore, when the heating device and the wet film humidifier are started at the same time, the humidity of the air after passing through the wet film humidifier will be affected by the temperature and cannot accurately reach the target humidity. Summary of the invention

[0004] Therefore, in order to solve the above problems, the present disclosure provides an air conditioning system and an air conditioning method, which are specifically as follows:

[0005] According to an embodiment of the present disclosure, an air conditioning system is provided, comprising: an upstream temperature detection unit for detecting a first temperature T of the inhaled air; 1 ; Target absolute humidity storage unit, the target absolute humidity H of the target space absolute humidity target value 2 Also includes: a humidification control unit for controlling the absolute humidity of the inhaled air to reach the target absolute humidity H 2 The humidification amount G above; the downstream temperature calculation unit calculates the second temperature T to obtain the humidification amount G 2 ; A first temperature control unit, a first temperature T 1 The air temperature is controlled to a second temperature T 2; Humidification unit, according to the humidification amount G is controlled to the second temperature T 2 The air is humidified; and the air supply part blows the humidified air to the target space.

[0006] According to an embodiment of the present disclosure, the air conditioning system provided further includes: a target space humidity detection unit, which is used to detect the absolute humidity of the target space; a humidification amount control unit, including: a humidity comparison unit, which compares the target absolute humidity H 2 and the target space absolute humidity H 1 and a humidification judgment unit, which judges whether humidification is to be performed by the humidification unit based on the comparison result of the humidity comparison unit.

[0007] According to an embodiment of the present disclosure, when the humidification determination unit determines that the target absolute humidity H 2 The value is greater than the target space absolute humidity H 1 When the humidification amount control unit controls the humidification unit not to humidify; when the humidification judgment unit determines that the target is absolutely H 2 The value is less than or equal to the target space absolute humidity H 1 When the value of , the humidification amount control unit controls the humidification unit to humidify.

[0008] According to an embodiment of the present disclosure, the air conditioning system provided further includes: an enthalpy-humidity storage unit for storing the temperature, relative humidity, absolute humidity and enthalpy of the air in association; a target space temperature detection unit for detecting the target space temperature T 3 ; Humidification control unit, including: saturated humidity acquisition unit, through the enthalpy humidity storage unit stored in the information and the target space temperature detection unit detected by the target space temperature T 3 , get the target space temperature T 3 The isenthalpic saturation absolute humidity is taken as the temperature T 3 Saturated humidity; and saturated efficiency calculation unit, according to the target absolute humidity H 2 、Absolute humidity of target space H 1 and temperature T 3 Saturation humidity, calculate the saturation efficiency.

[0009] According to an embodiment of the present disclosure, the air conditioning system provided further includes: a humidification efficiency storage unit for storing the rotation speed and saturation efficiency of the humidification motor in association; the humidification unit includes: a humidification motor for driving the rotation of the shaft; and a water breaking unit for breaking the water by the rotation of the shaft; the humidification amount control unit includes: a humidification motor speed control unit for controlling the rotation speed of the humidification motor; a humidification motor speed acquisition unit for acquiring the first saturation efficiency Pa calculated by the humidification efficiency storage unit and the saturation efficiency calculation unit 1 , get the first speed R of the humidification motor 1and a speed comparison unit, comparing the humidification motor speed acquisition unit to obtain the first speed R of the humidification motor 1 and the maximum speed R of the humidification motor max .

[0010] According to an embodiment of the present disclosure, when the speed comparison unit compares the first speed R of the humidification motor, 1 Greater than the maximum speed R of the humidification motor max The humidification motor speed control unit controls the humidification motor to the maximum speed R max Operation.

[0011] According to an embodiment of the present disclosure, when the speed comparison unit compares the first speed R of the humidification motor, 1 Less than or equal to the maximum speed R of the humidification motor max The humidification motor speed control unit controls the humidification motor to a first speed R 1 Operation.

[0012] According to an embodiment of the present disclosure, when the speed comparison unit compares the first speed R of the humidification motor, 1 Less than or equal to the maximum speed R of the humidification motor max The humidification motor speed control unit controls the humidification motor to a speed higher than the first speed R 1 Small second speed R 2 Operation.

[0013] According to an embodiment of the present disclosure, the first temperature control unit includes: a saturation efficiency acquisition unit, which acquires the saturation efficiency corresponding to the speed of the humidification motor controlled by the humidification motor speed control unit according to the humidification efficiency storage unit and the speed of the humidification motor; and a saturation humidity calculation unit, which calculates the saturation humidity H of the maximum amount of water vapor that the air can accommodate at a certain temperature. 0 ; Saturation efficiency acquisition unit, when the humidification motor is at the maximum speed R max During operation, the humidification efficiency storage unit obtains the maximum speed R max The corresponding second saturation efficiency Pa 2 ; When the humidification motor is at the second speed R 2 During operation, the humidification efficiency storage unit obtains the second speed R 2 The corresponding third saturation efficiency Pa 3 ; Saturation humidity calculation unit, according to the humidification amount G, and the second saturation efficiency Pa 2 Or the third saturation efficiency Pa 3 , calculate the saturated humidity H 0 .

[0014] According to an embodiment of the present disclosure, according to the enthalpy humidity storage unit and the saturated humidity H 0 , the downstream temperature calculation unit obtains the second temperature T 2 .

[0015] According to an embodiment of the present disclosure, the air conditioning system provided further includes: a compressor, which constitutes a part of the refrigeration cycle and discharges the heat medium after compressing it; a preheating exchange unit, which allows the air sucked from outside the target space and the heat medium to exchange energy with each other; and a compressor control unit, which controls the output frequency of the compressor; the compressor control unit includes: a cooling and heating capacity calculation unit, which calculates the cooling capacity of the room according to the second temperature T obtained by the downstream temperature calculation unit. 2 and the first temperature T obtained by the upstream temperature detection unit 1 The difference △T is used to calculate the heating and cooling capacity W of the preheat exchange unit.

[0016] According to an embodiment of the present disclosure, the compressor control unit further includes: a temperature parameter acquisition unit, which is used to acquire a temperature parameter that enables the compressor to operate according to the cooling and heating capacity W.

[0017] According to an embodiment of the present disclosure, the compressor control unit further includes: a first frequency determination unit for determining a frequency according to the first temperature T 1 , temperature parameters, and the air volume X generated by the air supply unit determine the first output frequency Hz of the compressor 1 .

[0018] According to an embodiment of the present disclosure, the air conditioning system provided further includes: a target temperature storage unit storing a target temperature T as a target value of the temperature of the target space. 4 The second temperature control unit will be the target space temperature T of the target space air intake temperature 3 Control to target temperature T 4 The air transport unit will be controlled to the target temperature T by the second temperature control unit 4 The air is then blown to the target space; and the second frequency determination unit, according to the target temperature T 4 , target space temperature T 3 , and the air volume Y generated by the air transport unit determine the second output frequency Hz of the compressor 2 .

[0019] According to an embodiment of the present disclosure, the air conditioning system provided further includes: a total output frequency determination unit for determining the first output frequency Hz determined by the first frequency determination unit 1 and the second output frequency Hz determined by the second frequency determination unit 2 , determines the total output frequency Hz of the compressor output 0 .

[0020] According to an embodiment of the present disclosure, the air conditioning system provided also includes: a heat exchange unit, the heat exchange unit including: an air supply inlet for sucking air from a space outside the target space; an air supply outlet for blowing air toward a preheating exchange part; an exhaust air inlet for sucking air from the target space; an exhaust air outlet for blowing air toward a space outside the target space; a heat exchange element for exchanging energy between air passing through an air supply path connecting the air supply inlet and the air supply outlet and air passing through an exhaust air path connecting the exhaust inlet and the exhaust outlet; and an upstream temperature detection part for detecting the temperature of air blown out from the air supply outlet of the heat exchange unit.

[0021] According to an embodiment of the present disclosure, there is provided an air conditioning method, comprising: detecting a first temperature T of the inhaled air; 1 Steps; Determine the target absolute humidity H of the inhaled air to reach the target space 2 The above steps of humidification amount G; Calculate the second temperature T of the air to obtain the humidification amount G 2 Step: setting the first temperature T 1 The air temperature is controlled to a second temperature T 2 According to the humidification amount G is controlled to the second temperature T 2 and supplying the humidified air to a target space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of an air conditioning system according to a first embodiment of the present disclosure;

[0023] Figure 2 is a schematic structural block diagram of an air supply unit and a humidity control unit of an air conditioning system according to a first embodiment of the present disclosure;

[0024] Figure 3 is a schematic diagram of a refrigeration cycle of an air conditioning system according to a first embodiment of the present disclosure;

[0025] Figure 4 is a schematic structural block diagram of a humidity control unit of an air conditioning system according to a first embodiment of the present disclosure;

[0026] Figure 5 It is a schematic diagram of information stored in the humidification efficiency storage unit of the first embodiment of the present disclosure;

[0027] Figure 6 It is a schematic diagram of information stored in the enthalpy and humidity storage unit of one embodiment of the present disclosure;

[0028] Figure 7 is a schematic structural block diagram of an outdoor unit of an air conditioning system according to an embodiment of the present disclosure;

[0029] Figure 8a It is a schematic diagram of a process of an air conditioning method according to a first embodiment of the present disclosure;

[0030] Figure 8b is another schematic diagram of the process of the air conditioning method of the first embodiment of the present disclosure;

[0031] Fig. 9 is a schematic diagram of an air conditioning system according to a second embodiment of the present disclosure;

[0032] Fig.10 is a schematic structural block diagram of an indoor unit and a humidity control unit of an air conditioning system according to a second embodiment of the present disclosure;

[0033] Fig.11 is a schematic structural block diagram of a humidity control unit of an air conditioning system according to a second embodiment of the present disclosure;

[0034] Fig.12 is a schematic structural block diagram of an outdoor unit of an air conditioning system according to a second embodiment of the present disclosure;

[0035] Fig.13 is a schematic diagram of a refrigeration cycle of an air conditioning system according to a second embodiment of the present disclosure;

[0036] Fig.14 It is a flowchart diagram of an air conditioning method according to a second embodiment of the present disclosure;

[0037] Fig.15 is a schematic diagram of an air conditioning system according to a third embodiment of the present disclosure;

[0038] Fig.16 It is a schematic structural block diagram of an outdoor unit and a heat exchange unit of an air conditioning system according to a third embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0040] The following is a description of the first embodiment of the present disclosure. Figure 1As shown, the air conditioning system of this embodiment is described. The air conditioning system is a system for conditioning the air of the target space 400. It includes: an air supply unit 100, a humidity control unit 200, an outdoor unit 300 and an input / output terminal 500. The air conditioning mentioned here means adjusting the temperature and / or humidity of the air to the target temperature and / or target humidity, and adding ventilation thereto as needed. In addition, the target space 400 refers to the object space to be air conditioned.

[0041] The air supply unit 100 is provided at the upstream side of the humidity control unit 200 described later, and includes an air supply unit 130 , an air supply air volume control unit 140 , a target space temperature detection unit 110 , and a target space humidity detection unit 120 .

[0042] The air supply unit 130 is a device that blows the air sucked into the air supply unit 100 toward the target space 400. The upstream side of the air supply unit 130 is connected to the target space 400, and the downstream side is connected to the humidity control unit 200. The air supply unit 130 includes an air supply motor and fan blades. Although the sucked air here refers to the air sucked from the target space 400 to achieve the circulation of the air in the target space 400, the air sucked from another space different from the target space 400 can also be used to achieve the purpose of ventilating the target space 400. The other different space refers to, for example, the outdoors of a space separated from the target space 400 by a wall.

[0043] The air supply motor (not shown) drives the air supply shaft to rotate after being energized.

[0044] The fan blades (not shown) are connected to the air supply shaft and drive the generation of air flow through the rotation of the air supply shaft of the air supply motor.

[0045] like Figure 2 As shown, the air supply volume control unit 140 is provided in the air supply unit 100. The air volume of the air supply unit 130 is controlled according to the air volume X stored in the air supply volume storage unit described later. That is, the air supply volume control unit 140 is the CPU of the air supply unit 130, and controls the operation of the air supply motor according to the operation command of the air supply volume storage unit.

[0046] The target space temperature detection unit 110 detects the temperature of the target space 400 to obtain the target space temperature T of the target space 400. 3 The target space temperature detection unit 110 is provided on the upstream side of the air supply unit 130, and the temperature of the air sucked from the target space 400 is taken as the target space temperature T 3 After being acquired, the humidity is transmitted to the humidity control unit 240 (described later) constituting the humidity control unit 200 .

[0047] The target space humidity detection unit 120 detects the absolute humidity of the target space 400 to obtain the target absolute humidity H 2 The target space humidity detection unit 120 is provided on the upstream side of the air supply unit 130, and the humidity of the air sucked from the target space is used as the absolute humidity H of the target space 400. 1 After being acquired, the humidity is transmitted to the humidity control unit 240 (described later) constituting the humidity control unit 200 .

[0048] like Figure 2 As shown, the humidity control unit 200 is a device for adjusting the temperature and humidity of air. Its upstream side is connected to the air supply unit 100, and its downstream side is connected to the target space 400. The humidity control unit 200 includes a preheat exchange unit 220, an upstream temperature detection unit 210, a humidification unit 230, a humidity control unit 240, and a communication unit 260.

[0049] The preheat exchange part 220 is arranged in the humidity control unit 200 and is a part of the refrigeration cycle described later. The preheat exchange part 220 is arranged on the upstream side of the humidification part 230, and is used to exchange heat between the air sucked into the humidity control unit 200 and the heat medium flowing in the preheat exchange part 220. The preheat exchange part 220 is composed of a hollow curved copper tube, so that the heat medium flowing in the copper tube and the air flowing through its surface can exchange energy with each other. The preheat exchange part 220 can be a condenser that can convert the high-temperature and high-pressure gaseous heat medium compressed by the compressor into a low-temperature and high-pressure liquid and dissipate heat to the outside; it can also be an evaporator that vaporizes the heat medium liquid and absorbs external heat. In this embodiment, it is a condenser.

[0050] The upstream temperature detection unit 210 detects the temperature of the air on the upstream side of the preheat exchange unit 220 to obtain the first temperature T 1 The upstream temperature detection unit 210 is disposed at the upstream side of the preheat exchange unit 220, and the temperature of the air from the air supply unit 100 is used as the first temperature T 1 Get.

[0051] The humidifying unit 230 is disposed at the downstream side of the preheating exchange unit 220 and is a device for humidifying the air by mixing water with the air. The humidifying unit 230 is a rotating device that can adjust the amount of water produced by adjusting its rotation speed. It includes: a humidifying motor 231 and a water breaking unit 232.

[0052] The humidification motor 231 drives the humidification rotating shaft to rotate by powering on. The types of humidification motors include: a type that can achieve stepless adjustment of the rotation speed, such as a DC motor; and a type that can only adjust the rotation speed according to a fixed gear, such as an AC motor.

[0053] The water breaking unit 232 is a device that breaks large water droplets into water mist particles after they collide with the wall. The water breaking unit 232 is a structure that rotates with the rotation of the humidification rotary shaft.

[0054] The humidity control unit 240 is provided in the humidity control unit 200 to control the humidity control unit 200. In other words, the CPU of the humidity control unit 200 controls the actions of the various driving units (such as the humidifying unit 230, the preheating exchange unit 220, etc.) according to the operation command of the storage unit 250. The humidity control unit 240 includes: a storage unit 250, a humidifying amount control unit 270, a first temperature control unit 280, and a communication unit 260, and the specific contents will be described later.

[0055] The outdoor unit 300, such as Figure 1 As shown, the outdoor unit 300 is disposed in a space isolated from the target space 400. The outdoor unit 300 includes a compressor 330, a compressor control unit 310, and an outdoor heat exchange unit 320.

[0056] The compressor 330 is a part of the refrigeration cycle described below. The compressor 330 compresses the low-temperature and low-pressure heat medium and discharges the high-temperature and high-pressure heat medium to provide power for the refrigeration cycle.

[0057] The compressor control unit 310 is provided in the outdoor unit 300. The compressor control unit 310 is the CPU of the outdoor unit 300 and controls the operation of the compressor 330 according to the operation command. The compressor control unit 310 includes: a cooling and heating capacity calculation unit 311, a temperature parameter acquisition unit 312, and a first frequency determination unit 313, and the specific contents will be described later.

[0058] The outdoor heat exchanger 320 is a part of the refrigeration cycle described later. The outdoor heat exchanger 320 is used to exchange heat between the air sucked into the outdoor unit 300 and the heat medium. The outdoor heat exchanger 320 is composed of a hollow curved copper tube, so that the heat medium flowing in the copper tube and the air flowing through its surface can exchange energy with each other. The outdoor heat exchanger 320 can be a condenser that can convert the high-temperature and high-pressure gaseous heat medium compressed by the compressor 330 into a low-temperature and high-pressure liquid and dissipate heat to the outside; it can also be an evaporator that vaporizes the heat medium liquid and absorbs the heat from the outside. In this embodiment, it is an evaporator.

[0059] The input / output terminal 500 is a device that is connected to the humidity control unit 200 through wireless communication, receives and sends the required information based on the operation of the air conditioning system, stores it in the humidity control unit 200, or obtains the status of the air conditioning system from the humidity control unit 200 and displays it. The input / output terminal 500 may be a device carrying an information terminal, such as an ordinary mobile phone or a smart phone. Furthermore, the input / output terminal 500 is not necessarily connected to the humidity control unit 200 by wireless communication, but may also be connected to the humidity control unit by wired communication. In this case, the input / output terminal 500 may be, for example, a wired controller installed on the wall.

[0060] Next, refer to Figure 3 The refrigeration cycle is explained. Figure 3 It is a schematic diagram of the refrigeration cycle of an air conditioning system.

[0061] The air conditioning system includes a refrigeration cycle in which a compressor, a four-way valve, a condenser, an expansion valve, and an evaporator are sequentially connected by pipes to circulate a heat medium.

[0062] The refrigeration cycle of this embodiment is composed of a compressor 330, a four-way valve 291, a preheat exchange unit 220 (i.e., a condenser), an expansion valve 290, and an outdoor heat exchange unit 320 (i.e., an evaporator), which are connected in sequence by piping to circulate the heat medium.

[0063] In the refrigeration cycle, the heat medium is pressurized by the compressor 330 to become a high-temperature and high-pressure gas, which enters the condenser, condenses and liquefies to release heat, and the liquefied heat medium is depressurized by the throttling device, and then enters the evaporator to evaporate and absorb heat. The refrigeration cycle can not only reduce the temperature of the target space, but also increase the temperature of the target space. That is to say, in the refrigeration cycle, the preheat exchange part 220 can act as an evaporator to achieve the purpose of reducing the temperature of the target space; the preheat exchange part 220 can also act as a condenser to achieve the purpose of increasing the temperature of the target space. That is to say, the flow direction of the heat medium discharged from the compressor 330 can be switched to cooling operation or heating operation through the four-way valve 291.

[0064] Heat medium is a part of the refrigeration cycle. Heat medium is used to transfer heat energy, so that the preheat exchange part 220 produces cooling and heating effects. In other words, the one that mainly cools the heat source is called refrigerant, and the one that is responsible for heating is called heat medium. It is the medium substance used to complete energy conversion in various heat engines.

[0065] The four-way valve 291 is a part of the refrigeration cycle. It is a device that can switch the flow direction of the heat medium discharged from the compressor. Figure 3 When the four-way valve 291 is switched to the solid line side, the preheating exchange unit 220 is a condenser and the outdoor heat exchange unit 320 is an evaporator for heating operation. Figure 3 When the dotted line side of , the preheat exchange unit 220 is an evaporator, and the outdoor heat exchange unit 320 is a condenser to perform cooling operation. In addition, the four-way valve 291 is not an essential structure.

[0066] The expansion valve 290 is a part of the refrigeration cycle and serves as a pressure reducing device to expand and cool the compressed heat medium.

[0067] In addition, the description of the preheat exchange part 220 is the same as the description of the air supply unit 100, and the description of the outdoor heat exchange part 320 is the same as the description of the outdoor unit 300, and the description here is omitted.

[0068] Furthermore, the action of the air conditioning system during heating operation refers to Figure 3 illustrate. Figure 3 The arrows in the figure indicate the flow direction of the heat medium when the greenhouse is running.

[0069] In the air conditioning system, when heating a room, the compressor 330 compresses the heat medium into a high-temperature and high-pressure gas, which is sent to the preheat exchange unit 220 after passing through the four-way valve 291. The heat medium flowing into the preheat exchange unit 220 exchanges heat with the air of the target space 400 transported by the air supply unit 130, releases heat and liquefies. The liquefied heat medium is decompressed at the expansion valve 290 and flows into the outdoor heat exchange unit 320. The heat medium flowing into the outdoor heat exchange unit 320 exchanges heat with the air sucked into the outdoor unit 300, absorbs heat and vaporizes. The vaporized heat medium flows back to the compressor 330. The heating operation is realized by the circulating heat medium loop of the heat medium.

[0070] Next, use Figure 4 The humidity control unit 240 is described in detail. The humidity control unit 240 includes a storage unit 250 , a humidification amount control unit 270 , a first temperature control unit 280 , and a communication unit 260 .

[0071] The storage unit 250 stores the required information based on the construction of the air conditioning system. The storage unit includes one or more of a flash memory, a hard disk, a mobile hard disk, an MRAM, a DRAM, an EEPROM, an SRAM, an SDRAM and / or a FRAM. The storage unit 250 includes: a humidification efficiency storage unit 254, a humidification enthalpy storage unit 253, a target absolute humidity storage unit 251, and a supply air volume storage unit 252.

[0072] The humidification efficiency storage unit 254 stores the rotation speed and saturation efficiency of the humidification motor 231 in association with each other, and also stores the air volume in association with the rotation speed and saturation efficiency of the humidification motor. Figure 5The content shown in is an example of information stored in the humidification efficiency storage unit 254. The humidification efficiency storage unit 254 stores the air volume, rotation speed, and saturation efficiency in an associated manner. For example, different saturation efficiencies corresponding to different rotation speeds at the same air volume are stored. In addition, different saturation efficiencies corresponding to different air volumes at the same rotation speed are stored. In other words, Figure 5 As shown, when the air volume is 150CMH, the saturation efficiency corresponding to the speed of 2000RPM is 65%, while the saturation efficiency corresponding to the speed of 3000RPM is 70%. In addition, at a speed of 2000RPM, the corresponding saturation efficiency is 65% and 55% when the air volume is 150CMH and 250CMH respectively.

[0073] The enthalpy-humidity storage unit 253 stores the temperature, relative humidity, absolute humidity and enthalpy of the air in a correlated manner. Figure 6 The content shown in is an example of the information stored in the enthalpy and humidity storage unit 253. At a certain temperature and a certain relative humidity, the amount of water vapor in the air corresponding to the temperature and the relative humidity can be obtained, that is, the absolute humidity can be obtained. For example, Figure 6 As shown, the absolute humidity at point "A", where the temperature is 20°C and the relative humidity is 35%, is about 5 g / kg; the absolute humidity at point "C", where the temperature is 20°C and the relative humidity is 45%, is about 6.4 g / kg.

[0074] The target absolute humidity storage unit 251 stores a target absolute humidity H which is a target value of the absolute humidity of the target space. 2 The target absolute humidity stored in the target absolute humidity storage unit 251 may be the humidity set by the user through the input / output terminal, or the corresponding humidity determined according to environmental conditions. The target absolute humidity may be, for example, the absolute humidity calculated based on the relative humidity input by the user, or may be the absolute humidity that is periodically converted to the relative humidity even though only the relative humidity can be input.

[0075] The air volume storage unit 252 stores the air volume X generated by the air supply unit 130. Here, the air volume X is the air volume set by the user at the input / output terminal 500 when the air conditioning system is started. The humidification control unit 270 controls the absolute humidity of the inhaled air to reach the target absolute humidity H. 2 The above humidification amount G, wherein the control referred to here includes determining the humidification amount G. Here, the humidification amount G is to make the absolute humidity of the humidified air reach the target absolute humidity H 2The above is the amount of water required to be provided by the humidifying unit 230. After determining the humidification amount G, the humidification amount control unit 270 sends a message to the saturation humidity calculation unit constituting the first temperature control unit 280 described later. The humidification amount control unit 270 includes: a humidity comparison unit 275, a humidification judgment unit 276, a saturation humidity acquisition unit 271, a saturation efficiency calculation unit 272, a humidification motor speed acquisition unit 273, a speed comparison unit 274, and a humidification motor speed control unit 277.

[0076] The humidity comparison unit 275 is used to compare the target absolute humidity H stored in the target absolute humidity storage unit 251. 2 and the target space absolute humidity H detected by the target space humidity detection unit 120 1 The size of the target absolute humidity H 2 and absolute humidity H 1 The size relationship, that is, H 2 > H 1 , or H 2 < H 1 , or H 2 = H 1 The result obtained by the humidity comparison unit 275 is sent to the humidification determination unit 276.

[0077] The humidification determination unit 276 determines whether the air passing through the humidification unit 230 needs to be humidified based on the comparison result of the humidity comparison unit 275. 2 ≤ H 1 When H is , it is determined that the air is not humidified, and a signal that no activation is required is sent to the humidifying unit 230; 2 > H 1 When , it means that the humidity of the target space is lower than the target value, it is determined that the air needs to be humidified, and a signal that it needs to be started is sent to the humidifying unit 230.

[0078] The saturated humidity acquisition unit 271 uses the information stored in the enthalpy and humidity storage unit 253 and the target space temperature T detected by the target space temperature detection unit 110 to obtain the target space temperature T. 3 , get the target space temperature T 3 The isenthalpic saturation absolute humidity, that is, the temperature T 3 Saturated humidity. That is, obtain the target space temperature T 3 The maximum amount of water vapor that can be contained in a unit volume of air at a certain enthalpy value.

[0079] The saturation efficiency calculation unit 272 calculates the degree to which the air can be humidified when the air reaches the saturation point (relative humidity 100%) during the process of changing the state of the air due to humidification. In other words, the degree to which the air state changes due to humidification when the humidification unit 230 is operating under the standard working state is calculated, that is, the absolute humidity H of the target space is calculated. 1 The air reaches the target absolute humidity H 2 The humidification capacity accounts for the absolute humidity of the target space H 1 The percentage of humidification required to achieve saturated humidity in the air.

[0080] The humidification motor speed acquisition unit 273 acquires the speed required to achieve the target absolute humidity H 2 The first saturation efficiency Pa calculated by the humidification efficiency storage unit 254 and the saturation efficiency calculation unit 272 is 1 , obtain the first speed R of the humidification motor of the humidification unit 230 1 At this time, the humidification motor of the humidification unit 230 has a first rotation speed R 1 It is the ideal humidification motor speed.

[0081] The speed comparison unit 274 is used to compare the first speed R of the humidification motor under the ideal state. 1 The actual rotation speed of the humidification motor of the humidification unit 230.

[0082] The humidifying motor speed control unit 277 controls the speed of the humidifying motor according to the comparison result of the speed comparison unit 274. According to the type of the humidifying motor, the humidifying motor is controlled to run at a required speed or a gear with a fixed speed.

[0083] The first temperature control unit 280 calculates the second temperature T in order to obtain the humidification amount G determined by the humidification amount control unit 270. 2 At the same time, the first temperature T is 1 The air is controlled to the second temperature T 2 The first temperature control unit 280 includes a saturation efficiency acquisition unit 281 , a saturation humidity calculation unit 282 , and a downstream temperature calculation unit 283 .

[0084] The saturation efficiency acquisition unit 281 acquires the saturation efficiency corresponding to the actual operating speed of the humidification motor 231 through the information stored in the humidification efficiency storage unit 254. max During operation, the saturation efficiency acquisition unit 281 acquires the second saturation efficiency Pa 2 ; When the humidification motor is R 0 The second speed R 2 During operation, the saturation efficiency acquisition unit 281 acquires the third saturation efficiency Pa3 That is to say, when the maximum speed R max When the RPM is 3000 and the air volume is 350CMH, the second saturation efficiency Pa 2 The second speed R 2 When the RPM is 2000 and the air volume is 350CMH, the third saturation efficiency Pa 3 It is 45%.

[0085] The saturation humidity calculation unit 282 calculates the humidification amount G and the second saturation efficiency Pa obtained by the saturation efficiency acquisition unit 281. 2 Or the third saturation efficiency Pa 3 Calculate the maximum amount of water vapor that can be contained in a unit volume of air at a certain temperature, that is, the saturated humidity H 0 .

[0086] The downstream temperature calculation unit 283 calculates the second temperature T for obtaining the humidification amount G. 2 , that is, calculate the second temperature T that the downstream side of the preheat exchange unit 220 should reach 2 .

[0087] The communication unit 260 is used for communication between the humidity control unit 200, the air supply unit 100, the outdoor unit 300 described later, and the input / output terminal 500. Wireless communication can be performed between the air supply unit 100, the outdoor unit 300, and the input / output terminal 500 connected to the humidity control unit 200. Specifically, data is exchanged between the air supply unit 100, the outdoor unit 300, and the input / output terminal 500 through Bluetooth, IrDA infrared, wifi, etc. However, not only wireless communication but also wired communication through a transmission line can be performed.

[0088] Next, use Figure 7 The compressor control unit 310 is described in detail. The compressor control unit 310 is provided in the outdoor unit 300 and includes a cooling and heating capacity calculation unit 311 , a temperature parameter acquisition unit 312 , and a first frequency determination unit 313 .

[0089] The cooling and heating capacity calculation unit 311 calculates the second temperature T obtained by the downstream temperature calculation unit 283. 2 and the first temperature T obtained by the upstream temperature detection unit 210 1 The difference △T is calculated to set the first temperature T 1 The air temperature is controlled to a second temperature T 2 The cooling and heating capacity W refers to the ability to cool or warm an object, that is, how much heat can be dissipated within a certain period of time. The cooling and heating capacity calculation unit 311 is a calculation unit that can calculate this capacity.

[0090] The temperature parameter acquisition unit 312 acquires the temperature parameter that enables the compressor to operate according to the cooling and heating capacity W. The temperature parameter is a parameter that the compressor 330 can receive.

[0091] The first frequency determination unit 313 determines the frequency of the first temperature T 1 , temperature parameters, and the air volume X generated by the air supply unit 130 determine the first output frequency Hz of the compressor 330 1 .

[0092] Next, the air conditioning system and the air conditioning method will be described in detail.

[0093] like Figure 1 As shown, in this embodiment, when the humidity control unit 240 determines that the air needs to be humidified and the humidifying unit 230 is turned on, the air first enters the preheat exchange unit 220, exchanges energy with the heat medium in the preheat exchange unit 220, and then the air temperature rises after the heat exchange, and then enters the humidifying unit 230 arranged on the downstream side of the preheat exchange unit 220 for humidification, and then is discharged from the target space 400 after humidification.

[0094] In this process, the temperature rises due to heating, which leads to an increase in the amount of saturated water vapor in the air. However, the prior art does not take this increase into account, so the air humidity exceeds the target humidity. Therefore, this embodiment pre-calculates the humidification amount required to achieve the target humidity, and in order to obtain the humidification amount, reversely calculates the downstream temperature of the preheat exchange unit 220 to improve the accuracy of adjusting the temperature and humidity of the target space. In this regard, this embodiment provides the following method:

[0095] like Figure 8a-8b As shown, first, for example, when a user starts the air conditioning system through the input and output terminal, the air supply unit 100 starts the air supply unit 130 to suck the air of the target space 400 into the air supply unit 100. When the sucked air enters the humidity control unit 200, the target space humidity detection unit 120 obtains the absolute humidity H of the target space. 1 The target absolute humidity storage unit 251 obtains the target absolute humidity H 2 (S1).

[0096] Then, the humidity comparison unit 275 compares the target space absolute humidity H 1 and target absolute humidity H 2 The comparison is performed, and the humidification determination unit determines whether the air needs to be humidified based on the comparison result of the humidity comparison unit 275 ( S2 ).

[0097] When H 2 ≤H 1 When, that is to say, the absolute humidity of the target space H 1 The target absolute humidity H has been reached2 or above, the air does not need to be humidified, and at this time, the humidity control unit 240 controls not to start the humidifying unit 230;

[0098] When H 2 >H 1 When, that is to say, the absolute humidity of the target space H 1 Failed to reach the target absolute humidity H 2 , the air needs to be humidified. At this time, the humidity control unit 240 controls the humidification unit 230 to start. 2 :7g / kg>absolute humidity of target space H 1 : 5g / kg, the humidification determination unit 276 determines that the air needs to be humidified.

[0099] When the humidification determination unit 276 determines that humidification is required, the humidification amount control unit 270 executes the following steps: The humidification amount control unit 270 calculates the humidification amount G by formula 1 (S3):

[0100] Humidification amount G = (target absolute humidity H 2 - Target space absolute humidity H 1 )*air density P*air volume X generated by the air supply unit 130…Formula 1

[0101] In other words, determine the absolute humidity H of the target space 1 Raise to target absolute humidity H 2 For example, when the air volume X is 350 m³ / h, the humidification control unit 270 will calculate the target absolute humidity H according to the formula (target absolute humidity H 2 :7g / kg – Absolute humidity of target space H 1 : 5g / kg) * air density P: 1.2kg / m³ * air volume X: 350m³ / h Calculate and determine the humidification amount G = 840g / h

[0102] Secondly, considering the energy loss during the humidification process, the present embodiment actually adds the humidity parameter M to the calculation formula (S3), that is, the humidification amount control unit 270 determines the humidification amount G by formula 2. This ensures that the absolute humidity of the air blown out after humidification is greater than the target absolute humidity. In other words, formula 1 can be replaced by formula 2 according to the situation.

[0103] Humidification amount G = ((target absolute humidity H 2 + humidity parameter M)- target space absolute humidity H 1 )*air density P*air volume X generated by the air supply unit 130…Formula 2.

[0104] Furthermore, in order to achieve the humidification amount G, the humidity control unit 240 of the present embodiment further performs the following steps:

[0105] The saturated humidity acquisition unit 271 acquires the target space temperature T detected by the target space temperature detection unit 110 through the communication unit 260. 3 (S4);

[0106] Then, the saturated humidity acquisition unit 271 calculates the target space temperature T obtained in S4 based on the enthalpy humidity storage unit 253. 3 , get the target space temperature T 3 Temperature T 3 After saturated humidity, such as: target space temperature T 3 : At point "A" at 20°C and relative humidity of 35%, if Figure 6 As shown in the figure, if a line is drawn from point "A" to 100% relative humidity, the corresponding absolute humidity is 8.47g / kg. 3 The saturated humidity is 8.47 g / kg (point B). Then, the saturated humidity acquisition unit 271 obtains the temperature T 3 The saturated humidity is sent to the saturated efficiency calculation unit 272 .

[0107] Then, the saturation efficiency calculation unit 272 obtains the temperature T 3 After saturation humidity, the first saturation efficiency Pa is calculated by the following formula 3 1 .

[0108] The first saturation efficiency Pa 1 = (Target absolute humidity H 2 - Target space absolute humidity H 1 ) / (Temperature T 3 Saturated humidity - absolute humidity of target space H 1 )*100%…Formula 3.

[0109] Then, the saturation efficiency calculation unit 272 calculates the first saturation efficiency Pa 1 Send to the humidification motor speed acquisition unit 273. For example, using "(target absolute humidity H 2 :7g / kg-absolute humidity of target space H 1 :5g / kg) / (Temperature T 3 Saturated humidity: 8.47g / kg – Absolute humidity of target space H 1 :5g / kg)*100%” formula to calculate the first saturation efficiency Pa 1 =58%.

[0110] Then, the humidification motor speed acquisition unit 273 obtains the first saturation efficiency Pa calculated in S6 through the humidification efficiency storage unit 254. 1 Corresponding humidification motor first speed R 1(S7). The humidification motor rotation speed acquisition unit 273 converts the humidification motor first rotation speed R acquired by the humidification motor rotation speed acquisition unit 273 into 1 Sent to the speed comparison unit 274. For example, the first saturation efficiency Pa 1 When it is 58%, Figure 5 As shown, the first speed R of the humidification motor 231 1 The first speed R of the motor is 4600 RPM. 1 It shows the rotation speed of the humidifying unit 230 required in order to achieve the amount of water that the humidifying unit 230 should generate, that is, the humidification amount G.

[0111] However, the speed of the humidifying motor 231 of the humidifying unit 230 has an upper limit, and unlike an AC motor, the speed may not be adjusted steplessly, but has a fixed gear, and the motor speed can only be adjusted within the range of the fixed gear. In other words, the speed of the humidifying motor 231 cannot be fine-tuned, and only a fixed gear speed can be selected.

[0112] Then, once the humidification motor speed acquisition unit 273 acquires the first speed R of the humidification motor 231 1 In the following case A or B, the humidification of the humidifier 230 alone cannot humidify the air to obtain the humidification amount G. In other words, the humidification of the humidifier 230 alone cannot make the air obtain the humidification amount G, and the air needs to be heated. In other words, the faster the motor rotates, the more water is atomized, and the more humidification is achieved. However, the motor speed is limited, so the lack of motor speed is compensated by heating the air described later.

[0113] A: Exceeding the maximum rotation speed R of the humidification motor 231 of the humidification unit 230 max B: The first speed R of the humidifying motor 231 of the humidifying unit 230 1 is smaller than the maximum rotation speed R of the humidification motor 231 of the humidification unit 230 max , and is located between the two gears.

[0114] Therefore, in order to improve the accuracy of humidity and temperature, the present embodiment sets a preheat exchange unit 220 on the upstream side of the humidifying unit 230, so that the air before humidification is heated and heated first, so that the amount of water vapor it can accommodate is increased, and then enters the humidifying unit 230. At this time, it is necessary to calculate how many degrees the temperature of the upstream side of the humidifying unit 230 should be. In other words, it is necessary to calculate how many degrees the temperature of the air after passing through the preheat exchange unit 220 should be. The temperature that needs to be calculated here is the second temperature T 2 To this end, there are the following steps to determine whether the air needs to be heated.

[0115] Then, the rotation speed comparison unit 274 compares the first rotation speed R of the humidification motor 231 calculated in S7. 1and maximum speed R max After the comparison, according to the comparison result, the humidification motor speed control unit 277 controls the speed of the humidification motor 231, and the first temperature control unit 280 determines whether it is necessary to control the first temperature T 1 of air (S8).

[0116] The specific control steps of S8 are divided into the following two cases A and B according to the type of motor:

[0117] A: When the motor speed of the humidifying unit 230 can be adjusted steplessly (for example, a DC motor).

[0118] like Figure 8a As shown, when R 1 > R max When (that is, the YES route of step S8), that is, the first speed R 1 The maximum rotation speed R of the humidification motor 231 of the humidification unit 230 is exceeded. max That is to say, when the humidifying unit 230 cannot reach the required humidification amount G even when it is running at the maximum speed, the humidifying motor speed control unit 277 controls the humidifying motor 231 of the humidifying unit 230 to run at the maximum speed R max The first temperature control unit 280 determines that the first temperature T 1 The air needs to be heated. The preheat exchange unit 220 preheats the air as an auxiliary humidifier. Therefore, even if the humidifier 230 is at the maximum speed R max Operation can also obtain humidification capacity G. 1 ≤R max , (ie, the NO route of step S8), the humidification motor speed control unit 277 controls the humidification motor 231 of the humidification unit 230 to rotate at the first speed R 1 The first temperature control unit 280 determines that the first temperature T does not need to be controlled. 1 In other words, there is no need to pre-heat the first temperature T 1 The humidifier 230 only rotates at the first speed R 1 By running, the humidification amount G can be obtained.

[0119] B: When the motor speed of the humidifying unit 230 can only be adjusted according to a fixed gear (such as an AC motor).

[0120] like Figure 8b As shown, when R 1 > R max When (that is, the YES route of step S8), that is, the first speed R 1 The maximum rotation speed R of the humidification motor 231 of the humidification unit 230 is exceeded. maxThat is to say, when the humidifying unit 230 cannot reach the required humidification amount G even when it is running at the maximum speed, the humidifying motor speed control unit 277 controls the humidifying motor 231 of the humidifying unit 230 to run at the maximum speed R max The first temperature control unit 280 determines that the first temperature T needs to be controlled. 1 The air needs to be heated. The preheat exchange unit 220 preheats the air as an auxiliary humidifier. Therefore, even if the humidifier 230 is at the maximum speed R max Operation can also obtain humidification amount G.

[0121] Then, when R 1 ≤R max， (that is, the NO route of step S8), the speed comparison unit compares the first speed R 1 Is it equal to gear position S (S8-1).

[0122] First speed R 1 It is exactly equal to the speed of gear S, that is, R 1 = gear S speed, the humidification motor speed control unit 277 controls the humidification unit 230 to operate at the speed of the gear S, and the first temperature control unit 280 determines that it is not necessary to control the first temperature T 1 The air is heated, that is, the air does not need to be heated. (That is, the NO route of S8-1).

[0123] ②When the first speed R 1 Not equal to the value of gear position S, that is, R 1 ≠S gear speed, for example, the first speed R 1 When the humidification motor speed control unit 277 is between two gears, such as the gear S2 and the gear S3, the humidification motor speed control unit 277 controls the humidification unit 230 to rotate at a speed less than the first speed R. 1 The speed R of gear S2 2 Operation, for example: humidification motor 231 first speed R 1 When the speed of the humidifying motor 231 of the humidifying unit 230 is 2500RPM, the gear S2 of the speed of the humidifying motor 231 of the humidifying unit 230 is 2000RPM and the gear S3 is 3000RPM, the humidifying motor 231 of the humidifying unit 230 operates at the S2 gear of 2000RPM, which is the smallest of the two. At this time, the first temperature control unit 280 determines that the first temperature T 1 air, that is, the air needs to be heated (that is, the YES route of S8-1).

[0124] The saturation efficiency acquisition unit 281 receives the information that the humidification motor 230 is rotating at the maximum speed R. max Or speed R 2 When the operation signal is received, the humidification efficiency storage unit 254 obtains the maximum speed R maxThe corresponding second saturation efficiency Pa 2 , or with the second speed R 2 The corresponding third saturation efficiency Pa 3 (S9). For example, when the maximum speed of the humidifying motor 231 of the humidifying unit 230 is 3000 RPM, that is, Figure 5 The maximum speed 3000RPM is higher than the first speed R 1 4600RPM is small, so the saturation efficiency acquisition unit 281 is based on Figure 5 The humidification efficiency storage unit 254 shown in FIG. 1 obtains the second saturation efficiency Pa 2 :50%.

[0125] Then, the saturation humidity calculation unit 282 calculates the humidification amount G calculated in S3 and the second saturation efficiency Pa obtained in S9. 2 (or the third saturation efficiency Pa 3 ) and the air volume X generated by the air supply unit 130, the saturated humidity H is calculated as follows: 0 (S10).

[0126] Saturated humidity H 0 =humidification amount G / (second saturation efficiency Pa 2 (or the third saturation efficiency Pa 3 )* air density P* air volume X)+absolute humidity of the air sucked into the humidity control unit 200…Formula 4. For example: In this embodiment, the air sucked into the humidity control unit 200 is the air of the target space, and Formula 4 is used: Humidification amount G: 840g / h / (saturation efficiency Pa 2 :50%*air density P1.2kg / m³*air volume X:350m³ / h)+target space absolute humidity H 1 :5g / kg to calculate the saturated humidity H 0 =9g / kg. However, if the air sucked into the humidity control unit 200 is outdoor air, the absolute humidity of the outdoor air is used for calculation. Then, the saturated humidity calculation unit 282 calculates the saturated humidity H 0 After receiving the saturated humidity H 0 The downstream temperature calculation unit 283 performs the following steps:

[0127] The downstream temperature calculation unit 283 calculates the saturated humidity H 0 and enthalpy humidity storage unit 253, obtain the saturated humidity H 0 The corresponding second temperature T 2 (S11). For example: saturated humidity H 0 =9g / kg, the second temperature T can be obtained according to the enthalpy humidity storage unit 253 2The downstream temperature calculation unit 283 transmits the second temperature T 2 The data is sent to the cooling / heating capacity calculation unit 311 of the compressor control unit 310 constituting the outdoor unit.

[0128] Then, in order to make the temperature of the air after passing through the preheat exchange unit 220 reach the second temperature T 2 , accurately controlling the output frequency of the compressor 330 to control the flow rate of the heat medium flowing into the heat exchange part preheat exchange part 220. In other words, the humidification amount control part 270 and the compressor control part 310 perform the following steps:

[0129] The upstream temperature detection unit 210 acquires the first temperature T of the sucked air. 1 ( S12 ), then, the upstream temperature detection unit 210 transmits the first temperature T 1 The signal is sent to the cooling and heating capacity calculation unit 311 and the first frequency determination unit 313 .

[0130] Then, the cooling and heating capacity calculation unit 311 receives the second temperature T sent from the downstream temperature calculation unit 283. 2 and the first temperature T emitted from the upstream temperature detection unit 210 1 Then, the cooling and heating capacity W is calculated by the following formula 5 and sent to the compressor. (S13)

[0131] Cooling and heating capacity W = (second temperature T 2 -First temperature T 1 )*air volume X generated by the air supply unit 130*air density P / 3600*air specific heat capacity J…Formula 5.

[0132] For example: The first temperature T 1 When the second temperature T 2 :22.7℃ - first temperature T 1 : 15℃) * air volume X: 350m³ / h * air density P1.2kg / m³ / 3600 * air specific heat capacity J: 1.01kJ (kgK) to calculate the cooling and heating capacity W = 0.9kw / h.

[0133] Then, when the compressor 330 receives the signal of the cooling and heating capacity W, the first frequency determination unit determines the first output frequency Hz of the compressor 330 according to the cooling and heating capacity W. 1 (S14) In addition, the output frequency of the compressor is determined not only by the cooling and heating capacity W, but also by, for example, the temperature parameter obtained by the temperature parameter acquisition unit according to the cooling and heating capacity W, the first temperature T 1 The air volume X generated by the air supply unit determines the first output frequency Hz 1 .

[0134] In determining the first output frequency Hz of the compressor 330 1 Then, perform the following steps:

[0135] The compressor control unit 310 will follow the first output frequency Hz of the compressor 330 determined by the first frequency determination unit 313 1 The compressor 330 is controlled (S15). The compressor 330 discharges the heat medium at a frequency determined by the first frequency. After the heat medium enters the preheat exchange unit 220, the temperature of the air passing through the preheat exchange unit 220 rises, and the amount of water vapor that the air can accommodate increases. The absolute humidity of the air blown out after humidification satisfies the target absolute humidity H 2 .

[0136] The following is a description of a second embodiment of the present disclosure. Fig. 9 As shown, the air conditioning system of the second embodiment further includes an indoor unit 420 based on the first embodiment.

[0137] The indoor unit 420 is arranged in the target space and is used to adjust the temperature of the air passing through it. For example, the indoor unit of the air conditioner. The indoor unit 420 includes: an air conveying unit 421, a target space heat exchange unit 423, and an indoor control unit 422. One or more units are provided according to the number of target spaces. In this embodiment, there can be three target spaces, so there are three indoor units respectively arranged in the target space A400 room, the target space B400 room, and the target space C400 room. At this time, the indoor units 420 correspond to the target space A400 room, the target space B400 room, and the target space C400 room as indoor unit A420, indoor unit B420, and indoor unit C420 respectively.

[0138] Now combined Fig. 9 Taking the indoor unit A420 corresponding to the target space A400 as an example, the indoor unit A420 includes: an air conveying unit A421, which is arranged in the indoor unit A420 and blows the air sucked from the target space out of the target space again, such as a blower.

[0139] The target space heat exchange unit A423 is arranged in the indoor unit A420 and is a part of the refrigeration cycle. It is formed by a hollow curved copper tube, so that the heat medium flowing in the copper tube and the air sucked from the target space through the air conveying unit A421 flowing through the surface of the copper tube exchange energy with each other.

[0140] like Fig.10As shown, the indoor control unit 422 is provided in the indoor unit 420 and controls the indoor unit 420. That is, the CPU of the indoor unit 420 controls the operation of each driving unit (such as the target space heat exchange unit 423, the air supply unit 421, etc.) according to the operation command of the air supply volume storage unit described later. The indoor control unit 422 includes: the second temperature control unit 241 and the air supply volume control unit 242.

[0141] The second temperature control unit 241 controls the target space temperature T sucked from the target space. 3 The air is controlled to the target temperature T 4 .

[0142] The transport air volume control unit 242 controls the air volume of the transport air unit 421 based on the air volume Y stored in a transport air volume storage unit described later.

[0143] However, the indoor unit 420 of this embodiment further includes: a target space temperature detection unit 110' and a target space humidity detection unit 120'. Fig. 9 As shown, the air supply unit 130' of this embodiment is disposed in the humidity control unit 200', and blows air sucked from another space with a temperature and / or humidity different from that of the target space, that is, the space outside the target space, to the target space. Fig.10 As shown, the humidity control unit 240' further includes an air supply volume control unit 140'.

[0144] In addition, if Fig.11 As shown, based on the first embodiment, the storage unit 250 ′ of the air conditioning system of this embodiment further includes: a target temperature storage unit 202 and a ventilation air volume storage unit 201 .

[0145] The target temperature storage unit 202 is used to store the target value of the temperature of the target space, that is, the target temperature T 4 That is, the temperature set by the user or the target absolute humidity H is stored. 2 Matching temperature.

[0146] The air volume storage unit 201 is used to store the air volume Y generated by the air volume unit 421. Here, the air volume Y can be the air volume set by the user, or can be the air volume matched according to humidity and / or temperature.

[0147] In addition, if Fig.12 As shown, based on the first embodiment, the compressor control unit 310 ′ of the air conditioning system of this embodiment further includes: a second frequency determination unit 314 and a total output frequency determination unit 315 .

[0148] The second frequency determination unit 314 determines the target temperature T4 and the target space temperature T 3, and the air volume Y generated by the air transport unit 421 determine the second output frequency Hz of the compressor 330' 2 .

[0149] The total output frequency determination unit 315 determines the first output frequency Hz determined by the first frequency determination unit 313 ′. 1 and the second output frequency Hz determined by the second frequency determination unit 314 2 , determines the total output frequency Hz output from compressor 330' 0 .

[0150] then, Fig.13 This is a schematic diagram of a refrigeration cycle of an air conditioning system according to a second embodiment.

[0151] In the refrigeration cycle of this embodiment, the compressor 330', the four-way valve 291', the preheat exchange unit 423, the expansion valve 290', and the outdoor heat exchange unit 320' are connected in sequence by pipes to circulate the heat medium. Furthermore, the compressor 330', the four-way valve 291', the target space heat exchange unit 423, the expansion valve 290', and the outdoor heat exchange unit 320' are connected in sequence by pipes to circulate the heat medium.

[0152] Secondly, the action of the air conditioning system in the heating operation is referenced Fig.13 For explanation. Fig.13 The arrows in the figure indicate the flow direction of the heat medium when the greenhouse is running.

[0153] In the air conditioning device, when heating the room, the compressor 330' compresses the heat medium, which is a high-temperature gas. After passing through the four-way valve 291', it is sent to the heat exchange part 220'. The heat medium flowing into the preheat exchange part 220' exchanges heat with the air outside the target space transported by the air supply part 130', releases heat and liquefies; the heat medium flowing into the target space heat exchange part 423 exchanges heat with the air of the target space transported by the air transport part 421, releases heat and liquefies. The liquefied heat medium is decompressed at the expansion valve 290' and flows into the outdoor heat exchange part 320'. The heat medium flowing into the outdoor heat exchange part 320' exchanges heat with the air sucked into the outdoor unit 300', absorbs heat and vaporizes. The vaporized heat medium flows back to the compressor 330'. The heating operation is realized by the circulating heat medium circuit of the heat medium.

[0154] Next, the air conditioning system and the air conditioning method according to the second embodiment will be described in detail.

[0155] like Fig. 9As shown, there are three target spaces, Room A400, Room B400, and Room C400, but the air blown to each target space by the humidity control unit 200' has the same temperature and humidity. When the target temperatures of the three target spaces are different, the air conditioning system in Example 1 cannot meet the temperature requirements of each target space. Therefore, in order to meet the temperature requirements of each target space. This embodiment not only sets the humidity control unit 200', but also sets an indoor unit 420 in each target space according to the number of target spaces.

[0156] In this embodiment, when the user needs to humidify the air while changing the air, the air supply unit 130' introduces the air outside the target space, such as outdoor air. The air first enters the preheat exchange unit 220', where it exchanges energy with the heat medium. The air temperature rises after the heat exchange, and then enters the humidification unit 230' arranged on the downstream side of the preheat exchange unit 220' for humidification, and then is discharged from the target space after humidification. At the same time, the air in the target space is transported to the target space heat exchange unit 423 by the air transport unit 421 of the indoor unit 420, and is discharged from the target space after exchanging energy with the heat medium at the target space heat exchange unit 423. In this way, even if the target temperatures of each target space are different, the temperature of the air blown out from the humidity control unit 200' can be adjusted according to the needs of each target space through the target space heat exchange unit 423 of the indoor unit 420, so as to improve the accuracy of humidity and temperature adjustment.

[0157] In addition, since the air entering the humidity control unit 200' in this embodiment is sucked in from the space outside the target space, the absolute humidity of the air sucked into the humidity control unit 200' in Formula 4 refers to the absolute humidity of the air from the space outside the target space. For example, when the absolute humidity of the air from the space outside the target space is 3g / kg, the saturated humidity H is calculated by Formula 4. 0 =

Humidification capacity G: 840g / h / (Second saturation efficiency Pa 2 :50%*air densityP:1.2kg / m³*air volumeX:350m³ / h)+target space absolute humidityH 1 :3g / kg

[0158] Furthermore, if Fig.14 As shown, based on Example 1, this example provides the steps after S14:

[0159] The target temperature storage unit 202 acquires the target temperature T 4 Then, it is sent to the second frequency determination unit 314 through the communication unit 260 ′ ( S15 ′).

[0160] Then, the second frequency determination unit 314 determines the received target temperature T 4, target space temperature T 3 , and the signal of the air volume Y generated by the air transport unit 421, the second output frequency Hz of the compressor 330' is determined 2 (S16).

[0161] Then, the total output frequency determination unit 315 determines the first output frequency Hz of the compressor 330' based on the first frequency determination unit 313'. 1 and the second output frequency Hz of the compressor 330' determined by the second frequency determination unit 314 2 Determines the total output frequency Hz of the compressor 330' 0 (S17).

[0162] Then, the compressor control unit 310' controls the compressor 330' to operate at the total output frequency Hz of the compressor 330' determined by the total output frequency determination unit 315. 0 Run (S19).

[0163] Through the above steps, even if there are multiple target spaces, the temperature requirements of each target space can be met.

[0164] The following is a description of a third embodiment of the present disclosure. Fig.15 As shown, the air conditioning system of the third embodiment, based on the second embodiment, further includes: a heat exchange unit 600.

[0165] The heat exchange unit 600 of this embodiment is arranged on the upstream side of the preheat exchange part 220", and includes a shell 620, an air supply inlet 640, an air supply outlet 660, an exhaust air inlet 670, an exhaust air outlet 650, an air supply air path, an exhaust air path, a heat exchange element 610, and a heat exchange control part 630.

[0166] The air supply inlet 640 is an opening provided on the shell 620 , which is connected to the space outside the target space through a pipeline, so that the air in the space outside the target space enters the interior of the shell 620 .

[0167] The air supply outlet 660 is an opening provided on the shell 620 , connecting the interior of the shell 620 with the target space, and is used to allow the air sucked from the air supply inlet to be blown out of the shell 620 to the target space.

[0168] The exhaust air inlet 670 is an opening provided on the shell 620 , connecting the interior of the shell 620 with the target space, and is used to draw air in the target space into the shell 620 .

[0169] The exhaust air outlet 650 is an opening provided on the shell 620, which connects the inside of the shell 620 with the space outside the target space through a pipeline, and is used to blow the air sucked into the shell 620 from the exhaust air inlet out of the space outside the target space.

[0170] The air supply passage is an air passage connecting the air supply inlet 640 and the air supply outlet 660 , so that the air passing through the air supply passage flows from the air supply inlet 640 to the air supply outlet 660 .

[0171] The exhaust air path connects the exhaust air inlet 670 and the exhaust air outlet 650 , so that the air passing through the exhaust air path flows from the exhaust air inlet 670 to the exhaust air outlet 650 .

[0172] The heat exchange element 610 is arranged in the shell and includes six parallelogram faces. The heat exchange element 610 is composed of multiple thin plates glued together to form a first air path and a second air path that are independent and intersecting with each other, so that the air passing through the air supply air path and the air passing through the exhaust air path can exchange energy with each other.

[0173] The heat exchange control unit 630 is provided in the heat exchange unit 600 and controls the heat exchange unit 600. It is the CPU of the heat exchange unit 600 and controls the actions of various driving units (such as the air supply unit 130 ″, etc.) according to the operation command. The heat exchange control unit 630 includes: a heat exchange receiving and sending unit 690,

[0174] like Fig.16 As shown, the heat exchange receiving and transmitting part 690 is used to connect the communication between the heat exchange unit 600 and the input-output terminal 500". It can be used as wireless communication between the heat exchange unit 600 and the input-output terminal 500", that is, data is exchanged between the input-output terminal 500" via Bluetooth, IrDA infrared, wifi, etc.

[0175] In addition, the air supply unit 130 ″ of the present embodiment is disposed in the air supply passage of the heat exchange unit 600 , and can blow the air entering from the space outside the target space into the target space.

[0176] Furthermore, the target space temperature detection unit 110 ″ is disposed near the exhaust air inlet 670 of the heat exchange unit 600 . When the air sucked from the target space passes through the exhaust air inlet 670 , the target space temperature detection unit 110 ″ can detect the humidity of the target space.

[0177] Furthermore, if Fig.16 As shown, the outdoor unit of this embodiment also has an outdoor receiving and transmitting unit 680.

[0178] The outdoor receiving and transmitting unit 680 is used to connect the outdoor unit 300″ and the humidity control unit 200″ and the indoor unit 420″. It can be used for wireless communication between the outdoor unit 300″ and the humidity control unit 200″ and the indoor unit 420″, that is, data is exchanged between the humidity control unit 200″ and the indoor unit 420″ through Bluetooth, IrDA infrared, wifi, etc.

[0179] The operation of the air conditioning system of this embodiment during the heating operation is the same as that of the second embodiment.

[0180] Next, the third embodiment will be described in detail.

[0181] like Fig.15 As shown, the air entering from the space outside the target space through the air supply section 130" will first enter from the air supply inlet 640 of the heat exchange unit 600, and will exchange energy with the air of the target space entering from the exhaust inlet 670 at the heat exchange element 610 in the heat exchange unit 600. The air temperature rises after the energy exchange, and then the air enters the preheat exchange section 220", exchanges energy with the heat medium at the preheat exchange section 220", so that the air temperature rises again after the heat exchange, and the heated air enters the humidification section 230" arranged on the downstream side of the preheat exchange section 220", and is humidified, and then is discharged from the target space. At the same time, the air sucked in from the target space is transported to the target space heat exchange section 423' through the air transport section 421' of the indoor unit 420", and is blown out of the target space after heat exchange with the heat medium at the target space heat exchange section 423'.

[0182] In this process, the air entering from the space outside the target space is heat exchanged with the air discharged from the space outside the target space through the exhaust air inlet 670 by the heat exchange element 610 to achieve the effect of preheating. In other words, the temperature of the air before entering the preheating exchange part 220 is preheated, which reduces the first temperature T 1 and the second temperature T 2 The temperature difference between the two reduces the frequency of the compressor 330″, thereby saving energy.

[0183] In addition, in the air conditioning system of the present disclosure, the device for preheating the air flowing through the humidifying section 230", that is, heating the air on the upstream side of the humidifying section, can be a heater that can increase the air temperature, such as a PTC humidifying device, in addition to the preheating exchange section 220". The control method of the present disclosure can also be implemented.

[0184] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present disclosure. It should be understood that the above description is only a specific embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. An air conditioning system, include: The upstream temperature detection unit detects the first temperature T of the inhaled air. 1 ; Target absolute humidity storage unit for storing the target absolute humidity H of the target value of the absolute humidity in the target space 2 for storage; It is characterized by further comprising: A humidification control unit is used to control the absolute humidity of the inhaled air to reach the target absolute humidity H 2 The above humidification amount G; The downstream temperature calculation unit calculates the second temperature T for obtaining the humidification amount G. 2 ; The first temperature control unit controls the first temperature T 1 The air temperature is controlled to a second temperature T 2 ; The humidifying unit is controlled to a second temperature T according to the humidification amount G 2 Humidify the air; The air supply unit blows the humidified air to the target space; The enthalpy and humidity storage unit is used to store the temperature, relative humidity, absolute humidity and enthalpy of the air in association; A target space temperature detection unit is used to detect the temperature of the target space. 3 ; The humidification amount control unit includes: The saturated humidity acquisition unit obtains the target space temperature T detected by the target space temperature detection unit through the information stored in the enthalpy and humidity storage unit. 3 , get the target space temperature T 3 The isenthalpic saturation absolute humidity is taken as the temperature T 3 Saturation humidity; and The saturation efficiency calculation unit calculates the target absolute humidity H 2 、Absolute humidity of target space H 1 And the temperature T 3 Saturation humidity, calculate the saturation efficiency.

2. The air conditioning system according to claim 1, further comprising: include: A target space humidity detection unit, used for detecting the absolute humidity of the target space; The humidification amount control unit includes: Humidity comparison unit, compares the target absolute humidity H 2 and the target space absolute humidity H 1 ;and The humidification determination unit determines whether to perform humidification by the humidification unit according to the comparison result of the humidity comparison unit.

3. The air conditioning system according to claim 2, When the humidification determination unit determines that the target absolute humidity H 2 The value is greater than the target space absolute humidity H 1 When the value of , the humidification amount control unit controls the humidification unit not to humidify; When the humidification determination unit determines that the target absolute humidity H 2 The value is less than or equal to the target space absolute humidity H 1 When the value of , the humidification amount control unit controls the humidification unit to humidify.

4. The air conditioning system according to claim 1, further comprising: include: Humidification efficiency storage unit; The humidifying unit comprises: A humidification motor for driving the shaft to rotate; and A water breaking unit, used for breaking water by rotating the rotating shaft; The humidification amount control unit includes: A humidification motor speed control unit, which controls the speed of the humidification motor; The humidification motor speed acquisition unit calculates the first saturation efficiency Pa according to the humidification efficiency storage unit and the saturation efficiency calculation unit. 1 , get the first speed R of the humidification motor 1 ;and The speed comparison unit compares the first speed R of the humidification motor obtained by the humidification motor speed acquisition unit. 1 and the maximum speed R of the humidification motor max ; The humidification efficiency storage unit is used to store the rotation speed of the humidification motor and the saturation efficiency in association with each other.

5. The air conditioning system according to claim 4, When the speed comparison unit compares the first speed R of the humidification motor 1 Greater than the maximum speed R of the humidification motor max hour; The humidification motor speed control unit controls the humidification motor to rotate at a maximum speed R max Operation.

6. The air conditioning system according to claim 4, When the speed comparison unit compares the first speed R of the humidification motor 1 Less than or equal to the maximum speed R of the humidification motor max hour; The humidification motor speed control unit controls the humidification motor to rotate at a first speed R 1 Operation.

7. The air conditioning system according to claim 4, When the speed comparison unit compares the first speed R of the humidification motor 1 Less than or equal to the maximum speed R of the humidification motor max hour; The humidification motor speed control unit controls the humidification motor to rotate at a speed higher than the first speed R 1 Small second speed R 2 Operation.

8. The air conditioning system according to claim 6, the first temperature control unit, include: a saturation efficiency acquisition unit, which acquires, according to the humidification efficiency storage unit and the rotation speed of the humidification motor, a saturation efficiency corresponding to the rotation speed of the humidification motor controlled by the humidification motor rotation speed control unit; and The saturation humidity calculation unit calculates the saturation humidity H of the maximum amount of water vapor that the air can hold at a certain temperature. 0 ; The saturation efficiency acquisition unit, When the humidification motor rotates at the maximum speed R max During operation, the humidification efficiency storage unit obtains the maximum speed R max The corresponding second saturation efficiency Pa 2 ; When the humidifying motor rotates at a second speed R 2 During operation, the humidification efficiency storage unit obtains the second rotation speed R 2 The corresponding third saturation efficiency Pa 3 ; The saturated humidity calculation unit, According to the humidification amount G, and the second saturation efficiency Pa 2 Or the third saturation efficiency Pa 3 , calculate the saturated humidity H 0 .

9. The air conditioning system according to claim 8, According to the enthalpy humidity storage unit and the saturated humidity H 0 , the downstream temperature calculation unit obtains the second temperature T 2 .

10. The air conditioning system according to claim 1, further comprising: include: The compressor, which forms part of the refrigeration cycle, compresses the heat medium and then discharges it; a preheating exchange unit for causing the air sucked in from outside the target space and the heat medium to exchange energy with each other; and A compressor control unit, controlling the output frequency of the compressor; The compressor control unit comprises: The cooling and heating capacity calculation unit calculates the second temperature T obtained by the downstream temperature calculation unit. 2 and the first temperature T obtained by the upstream temperature detection unit 1 The difference ΔT is used to calculate the cooling and heating capacity W of the preheat exchange unit.

11. According to the air conditioning system of claim 10, the compressor control unit further include: The temperature parameter acquisition unit is used to obtain the temperature parameters that enable the compressor to operate according to the cooling and heating capacity W.

12. The air conditioning system according to claim 11, The compressor control unit also include: The first frequency determination unit is used to determine the frequency of the first temperature T 1 , the temperature parameter, and the air volume X generated by the air supply unit determine the first output frequency Hz of the compressor 1 .

13. The air conditioning system according to claim 12, further comprising: include: A target temperature storage unit stores a target temperature T which is a target value of the temperature of the target space. 4 ; The second temperature control unit sets the target space temperature T which is the temperature of the air sucked into the target space. 3 Control to the target temperature T 4 ; The air conveying unit controls the temperature to the target temperature T through the second temperature control unit. 4 The air is then blown to the target space; and Second frequency determination unit, according to the target temperature T 4 , the target space temperature T 3 , and the air volume Y of the air generated by the air blowing unit, determine the second output frequency Hz of the compressor 2 .

14. The air conditioning system according to claim 13, further comprising: include: A total output frequency determination unit is used to determine the first output frequency Hz according to the first frequency determination unit. 1 and the second output frequency Hz determined by the second frequency determination unit 2 , determines the total output frequency Hz of the compressor output 0 .

15. The air conditioning system according to claim 10, further comprising: include: Heat exchange unit, The heat exchange unit comprises: An air inlet for sucking air from a space outside the target space; An air outlet for blowing air toward the preheating exchange part; an exhaust air inlet for sucking air from the target space; an exhaust air outlet, for blowing air out to a space outside the target space; and A heat exchange element for exchanging energy between air passing through an air supply passage connecting the air supply inlet and the air supply outlet and air passing through an exhaust passage connecting the exhaust inlet and the exhaust outlet; The upstream temperature detection unit detects the temperature of the air blown out from the air supply outlet of the heat exchange unit.

16. An air conditioning method using the air conditioning system according to any one of claims 1 to 15, include: Detecting the first temperature T of the inhaled air 1 Steps; Determine the target absolute humidity H of the inhaled air to reach the target space 2 The above steps of humidification amount G; Calculate the second temperature T of the air to obtain the humidification amount G 2 Steps; The first temperature T 1 The air temperature is controlled to a second temperature T 2 Steps; According to the humidification amount G, the temperature is controlled to the second temperature T 2 The step of humidifying the air; and The step of delivering humidified air to the target space.

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