WO2018000988A1 - Method and device for controlling air conditioner, and air conditioner - Google Patents

Abstract

A method and device for controlling an air conditioner, and the air conditioner. The method comprises: acquiring an indoor target temperature, the indoor temperature, and the outdoor temperature; comparing the indoor temperature with the indoor target temperature to produce a first comparison result and a second comparison result; in response to the first comparison result, identifying whether a first mode is currently active; if not, then executing: marking the current mode as a second mode, and controlling, on the basis of the comparison result of the indoor temperature and the outdoor temperature, entry into a fresh air mode or a heating mode; in response to the second comparison result, identifying whether the second mode is currently active; if not, then executing: marking the current mode as the first mode, and controlling, on the basis of the comparison result of the indoor temperature and the outdoor temperature, entry into a fresh air mode or a cooling mode. Outdoor fresh air can be fully utilized in the cooling and warming of indoor air on the basis that demands for cooling and heating are satisfied, thus greatly reducing energy consumption, saving energy, and reducing emissions.

Description

 Air conditioner control method and device, air conditioner

 Cross-reference to related applications

 This application requires the application number submitted on June 27, 2016 as CN201610479494.5, 2017. The application number submitted on March 15, 2017 is CN201710153884.8 and the application number submitted on April 14, 2017 is CN201710243455.X Priority of the Chinese patent application.

 Technical field

 The invention relates to the field of air conditioners, and in particular to a method and device for controlling air conditioners and an air conditioner.

 Background technique

The main purpose of the air conditioning system of air conditioning equipment is to provide a controllable, comfortable and healthy air environment for people's indoor activity space. The main control indicators of air conditioning include air quality, air temperature, air humidity and wind speed.

At present, air-conditioning equipment has been widely used in various fields such as life and production. Due to the limitations of structure and control methods, existing air-conditioning equipment consumes a lot of energy when the seasons alternate, such as summer and autumn, when the outdoor temperature is low and the indoor temperature is high. In order to reduce the indoor temperature, it takes a lot of energy to turn on the air-conditioning refrigeration. The colder air outside is completely unused, causing a lot of waste.

The fresh air system is an independent air treatment system consisting of a fresh air ventilator and a pipe accessory. The fresh air ventilator filters and purifies the outdoor fresh air, and delivers it to the room through the pipeline to discharge the indoor dirty and low oxygen content air. outdoor. While providing fresh air to the room, the outdoor air temperature must also interfere with the indoor air temperature.

 Summary of the invention

In view of the above, it is necessary to provide a method and device for controlling an air conditioner to solve the technical problem of realizing indoor air temperature, energy saving, and intelligent adjustment of outdoor air conditioning. The technical solution of the present invention is as follows:

 In a first aspect, the present invention provides a method for controlling an air conditioner, comprising:

 Obtain indoor target temperature, indoor temperature and outdoor temperature;

Comparing the indoor temperature and the indoor target temperature, obtaining a temperature comparison result, the temperature comparison result including a first comparison result and a second comparison result;

Responding to the first comparison result, identifying whether the current mode is the first mode, and if not, performing the second mode action, the second mode action comprising: marking the current mode as the second mode, and according to the indoor temperature and the outdoor temperature Comparing the results, the control enters the fresh air mode or the heating mode;

Responding to the second comparison result, identifying whether the current mode is the second mode, and if not, performing the first mode action, the first mode action comprising: marking the current state as the first mode, and according to the indoor temperature and the outdoor temperature Comparing the results, the control enters the fresh air mode or the cooling mode.

 In a second aspect, the present invention provides an air conditioner control device comprising the following modules:

 a temperature acquisition module for acquiring indoor target temperature, indoor temperature, and outdoor temperature;

 a temperature comparison module for comparing the indoor temperature with the indoor target temperature to obtain a temperature comparison result;

 a pattern recognition module for identifying a current mode and obtaining a recognition result;

 a marking module, configured to update the current mode according to the temperature comparison result and the recognition result;

 The mode control module is configured to further control the entering the fresh air mode, the heating mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature.

 In a third aspect, the present invention provides an air conditioning apparatus.

The invention has the following advantages: the automatic switching of the working mode of the air-conditioning device is carried out by comparing the indoor target temperature, the indoor temperature and the outdoor temperature, and the recognition of the working mode, so that the outdoor and the heating demand can be fully utilized. The fresh air cools and warms the indoor air, greatly reducing the consumption of energy, saving energy and reducing emissions.

 DRAWINGS

 1 is a schematic diagram of a complete process of a method for controlling an air conditioner according to an embodiment of the present invention;

 2 is a schematic diagram of a core flow of a method for controlling an air conditioner according to an embodiment of the present invention;

 3 is a schematic diagram of a basic flow of a method for controlling an air conditioner according to an embodiment of the present invention;

 Figure 4 is a schematic flow chart of the first part of Figure 3;

 Figure 5 is a schematic flow chart of the second part of Figure 3;

 Figure 6 is a partial flow chart of Figure 4;

 Figure 7 is a partial flow chart of Figure 5;

 8 is a schematic flow chart of another air conditioner control method according to an embodiment of the present invention;

 Figure 9 is a schematic diagram of an extended flow of the basic flow of Figure 3;

 Figure 10 is a schematic diagram of the first extended flow of Figure 9;

 11 is a schematic diagram of a second extended flow of FIG. 9;

 12 is a block diagram of a module of an air conditioner control device according to an embodiment of the present invention;

 13 is a schematic structural diagram of an air conditioning device controlled by an air conditioner control method according to an embodiment of the present invention;

 Figure 14 is a schematic structural view of an indoor unit of an air conditioning apparatus according to the present invention;

 Figure 15 is a schematic structural view of an outdoor unit of an air conditioning apparatus according to the present invention;

 Figure 16 is a schematic view showing the flow direction of the air passage of the air conditioning apparatus of the present invention;

 detailed description

The technical solutions of the present invention are further described below in conjunction with the drawings and specific embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The air conditioner control method and device provided by the embodiments of the present invention can be applied to existing air conditioners, so as to realize the purpose of intelligent regulation, energy conservation and environmental protection, and has a wide application range and a large market prospect.

 Example 1

 Figure 1 shows the specific flow of the entire complete logic of the air conditioning equipment control method of the present invention, wherein T1 is the indoor target temperature, T2 For the indoor temperature, T3 is the outdoor temperature. The following describes the above control methods. In an embodiment of the present invention, a method for controlling an air conditioner is provided, as shown in FIG. 2 As shown, the air conditioner control method includes the following steps:

 S1, obtaining indoor target temperature, indoor temperature and outdoor temperature.

 Set the indoor target temperature to T1, the indoor temperature to T2, and the outdoor temperature to T3. Specifically, the indoor target temperature T1 The target temperature set for the user, while the indoor temperature T2 and the outdoor temperature T3 The temperature sensor is detected by a temperature sensor, and the temperature sensor may be a first temperature sensor and a second temperature sensor provided by the air conditioner body, respectively detecting the temperature of the indoor and outdoor, or may be a temperature sensor independent of the air conditioner, and The controller of the air conditioner is connected to the communication, and the present invention acquires T2 and T3 The manner of setting the sensor is not specifically limited. The ultimate goal of the control method provided by this embodiment is to control the adjustment of the fresh air mode, the heating mode or the cooling mode to bring the indoor temperature to the set target temperature, that is, the indoor target temperature.

 S2, comparing the indoor temperature and the indoor target temperature, the temperature comparison result is obtained.

 Referring to Figure 1, the obtained temperature comparison results can be divided into three types, T1>T2, T1<T2 and T1=T2.

 S3, identify the current mode, and get the recognition result.

In the present application, the air conditioning device has a mode recognition function, and the specific implementation manner is: setting a mode mark, and the pattern recognition can be realized by reading the mode mark, and the recognition result is the mode state of the current latest mark.

 S4, according to the temperature comparison result and the recognition result, update the current mode.

 Specifically, different tag updates are performed according to different temperature comparison results and different recognition results, see FIG. , lists the two different states of the mark first mode and the mark second mode.

 S5 further controls the entering the fresh air mode, the heating mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature.

 As above, Figure 3 lists several different control processes for entering a fresh air mode, a heating mode, or a cooling mode.

In one embodiment of the present invention, the temperature comparison result includes a first comparison result and a second comparison result, and the following corresponds to the first comparison result and the second comparison result, respectively, for the step S5 described above:

 Referring to FIG. 4, the control method corresponding to the first comparison result includes the following processes:

 S211, the temperature comparison result is a first comparison result, and the first comparison result is that the indoor target temperature is higher than the indoor temperature;

 S212, identifying whether the current mode is the first mode, and if not, executing S213;

 S213, marking the current mode as the second mode;

 S214, according to the comparison result of the indoor temperature and the outdoor temperature, the control enters the fresh air mode or the heating mode.

 Referring to Figure 1, step S212 If the determination result is yes, further determining whether the difference between the indoor target temperature and the indoor temperature exceeds the first overshoot amplitude, and if so, performing the second mode action to implement the conversion of the first mode to the second mode, otherwise Exit the cooling mode and / or fresh air mode, and waiting to return to S1 to enter the next round of control.

Wherein, the further determining is to identify the authenticity of the first mode when the marking mode is recognized. For example, in the autumn, whether the difference between the indoor target temperature and the indoor temperature exceeds the first overshooting amplitude, and if the temperature difference exceeds the first An overshoot amplitude value determines that the current first mode mark is a pseudo mark, and automatically converts to the second mode, otherwise exits the cooling mode and / or fresh air mode.

 It should be noted that the steps S213 and S214 are not successive. In this embodiment, step S213 is performed first, and then steps are executed. S214, but it can be clearly seen that the step S214 is performed first, and then the S213 is executed, and the technical solutions of the present invention are also implemented. Steps S213 and 214 constitute the second mode action.

 Here, step S214 is a core step, which can be specifically decomposed into the method flow in FIG. 6, including:

 S2141, compare the indoor temperature and the outdoor temperature;

 S2142. If the indoor temperature is lower than the outdoor temperature, execute S2143, otherwise execute S2144;

 S2143, enter the fresh air mode;

 S2144, enter heating mode.

 The above steps S2142 The execution condition in the middle is limited to the indoor air temperature being lower than the outdoor temperature, and then entering the fresh air mode, otherwise entering the heating mode, in addition, the execution condition can be relaxed to a certain range, that is, whether the temperature difference between the indoor temperature and the outdoor temperature is exceeded The preset range, if it is, enters the heating mode, otherwise it enters the fresh air mode. The technical solution for controlling the entry into the fresh air mode or the heating mode by using this execution condition also falls within the scope of protection of the present invention.

 The above step S2143 is specifically for accessing fresh air, since T1>T2, T3>T2 Therefore, it is advantageous to adjust the T2 to the target indoor temperature through the outdoor fresh air higher than the indoor temperature, and make full use of the outdoor high-temperature energy to achieve the energy saving effect.

 The above steps S2144 Specifically, the air is heated by a heating component in an air conditioning device, and the heating component includes an electric heater disposed at an air heat exchange circuit, and the electric heater works to air the air in the air heat exchange pipe Heating up due to heating T1>T2>T3, therefore, outdoor fresh air can not help the room to raise the temperature, in this case, it needs to rely on the heating components of the air conditioning equipment to T2 Adjust to the target room temperature. It should be noted that, in addition to the heating element to achieve the heating of the air, the air can be heated by the evaporator. The process and principle of the evaporator heating are the same as the process and principle of the evaporator refrigeration, and the present invention does not limit the specific heating. In other ways, other air-conditioning heating methods in the prior art fall within the scope of protection of the present application.

The above is a method flow for selecting both the fresh air mode and the heating mode, that is, in the fresh air mode, first, the fresh air is used to raise the indoor temperature, and then waiting to return to step S1. Temperature acquisition is performed to enter the next round of control, and in another embodiment of the present invention, an expansion method after entering the fresh air mode is provided. Referring to FIG. 10, the flow includes:

 S2143, enter the fresh air mode;

 S2145, determining whether the indoor target temperature is higher than the outdoor temperature, and if so, executing S2146;

 S2146 At the same time, entering the heating mode, specifically, on the one hand, through the outdoor high-temperature fresh air, on the other hand, driving the heating components of the air conditioner to work.

 Referring to Fig. 1, it can be seen that if the result of the determination is no in step S2145, the process returns to step S1 to proceed to the control of the next round.

 This control method can quickly make the indoor temperature reach the target temperature while saving energy and temperature.

 Referring to FIG. 5, the control method corresponding to the second comparison result includes the following processes:

 S221, the temperature comparison result is a second comparison result, and the second comparison result is that the indoor target temperature is lower than the indoor temperature;

 S222, identifying whether the current mode is the second mode, and if not, executing S223;

 S223, marking the current mode as the first mode;

 S224, according to the comparison result of the indoor temperature and the outdoor temperature, the control enters the fresh air mode or the cooling mode.

 Referring to Figure 1, step S222 If the determination result is yes, further determine whether the difference between the indoor temperature and the indoor target temperature exceeds the second overshoot amplitude, and if so, perform the first mode action to implement the conversion of the second mode to the first mode, otherwise Exit heating mode and / or fresh air mode, and waiting to return to S1 to enter the next round of control.

Wherein, the further determining is to identify the authenticity of the second mode when identifying the mark mode, for example, in the late spring and early summer, whether the difference between the indoor temperature and the indoor target temperature exceeds the second overshoot amplitude. If the temperature difference exceeds the second overshoot amplitude, it is determined that the current second mode flag is a pseudo mark, and the mode is automatically converted to the first mode, otherwise the heating mode is exited and / or fresh air mode.

 It should be noted that the steps S223 and S224 are not in the same order. In this embodiment, the step S223 is performed first, and then the steps are executed. S224, but it can be clearly seen that the technical solution of the present invention can be implemented by performing step S224 and then executing S223, and steps S223 and 224 constitute the first mode action.

 Here, step S224 is a core step, which can be specifically decomposed into the method flow in FIG. 7, including:

 S2241, comparing the indoor temperature and the outdoor temperature;

 S2242, if the indoor temperature is higher than the outdoor temperature, execute S2243, otherwise execute S2244;

 S2243, enter the fresh air mode;

 S2244, enter the cooling mode.

 The above steps S2242 The execution condition in the middle is limited to the indoor air temperature being higher than the outdoor temperature, and then entering the fresh air mode, otherwise entering the cooling mode, in addition, the execution condition can be relaxed to a certain range, that is, whether the temperature difference between the indoor temperature and the outdoor temperature exceeds the pre-determination Set the range, if it is, enter the cooling mode, otherwise enter the fresh air mode. The technical solution for controlling the entry into the fresh air mode or the cooling mode by using this execution condition also falls within the scope of protection of the present invention.

 The above step S2243 is specifically for introducing fresh air, since T1<T2, T3<T2 Therefore, it is advantageous to adjust the T2 to the target indoor temperature by the outdoor fresh air lower than the indoor temperature, and make full use of the outdoor low-temperature energy to achieve the energy saving effect.

 The above steps S2244 Specifically, the air is cooled by using a refrigeration component in an air conditioning device, which includes a compressor, a condenser, a capillary (or an electronic expansion valve), and an evaporator connected in sequence, and the refrigerant is in a compressor, a condenser, and a capillary tube ( Or an electronic expansion valve) and a circulating refrigeration circuit formed by the evaporator, the evaporator is disposed at the air heat exchange pipeline, and the air heat exchange between the refrigerant and the air heat exchange pipeline cools the air cooling due to T1<T2<T3, therefore, outdoor fresh air cannot help the room to lower the temperature. In this case, it is necessary to adjust the T2 to the target indoor temperature by means of the refrigeration unit of the air conditioner.

The above is a method flow for selecting both the fresh air mode and the cooling mode, that is, in the fresh air mode, first, the fresh air is used to cool the indoor temperature, and then waiting to return to step S1. Temperature acquisition is performed to enter the next round of control, and in another embodiment of the present invention, an expansion method after entering the fresh air mode is provided. Referring to FIG. 11, the flow includes:

 S2243, enter the fresh air mode;

 S2245, determining whether the indoor target temperature is lower than the outdoor temperature, and if so, executing S2246;

 S2246 At the same time, entering the cooling mode, specifically, on the one hand, through the outdoor low temperature fresh air, on the other hand, the refrigeration unit that drives the air conditioner works.

 This control method can quickly make the indoor temperature reach the target temperature while saving energy and temperature.

 Referring to FIG. 1, it can be seen that if the result of the determination is no in step S2245, the process returns to step S1. Go to the next round of control, as shown in Figure 9.

 In one embodiment of the present invention, a control method under a third temperature comparison result is provided, see FIG. 8, which includes the following processes:

 S231 The temperature comparison result is a third comparison result, and the temperature comparison result further includes a third comparison result, wherein the third comparison result is that the indoor target temperature is equal to the indoor temperature;

 S232, identifying whether the current mode is the first mode or the second mode, and if not, executing S233;

 S233, determining the indoor temperature change trend;

 S234, determining that the temperature is falling or rising, if it is falling, executing S235; if rising, executing S237;

 S235, marking the current mode as the second mode;

 S236, according to the comparison result of the indoor temperature and the outdoor temperature, controlling to enter the fresh air mode or the heating mode;

 S237, marking the current mode as the first mode;

 S238, according to the comparison result of the indoor temperature and the outdoor temperature, the control enters the fresh air mode or the heating and cooling mode.

 As described above, steps S235 and S236 form a second mode action, and the sequential execution order is not limited between the two, step S237 And S238 is the same.

 Specifically, the execution details of the steps S236 and S238 are respectively referred to the above steps S214 and S224. Method flow.

In this embodiment, the rule policy for determining the indoor temperature change trend includes, but is not limited to, detecting the indoor temperature within a set time interval, where the time interval is not limited to a specific value, and may be set by the user, if the last detection is performed. If the difference between the temperature result and the initial indoor temperature exceeds the set temperature threshold, it is determined that there is a tendency to change.

 Step S234 In addition, the following conditions are also included: setting an observation time threshold, and if the indoor temperature does not change within the observation time threshold, returning to S1 Into the next round of control, in the next round of control, even if the above judgment result is that the indoor temperature does not change trend, it is highly likely that there is a difference from the initial indoor temperature (only the temperature threshold is not exceeded), resulting in the indoor temperature and the indoor target temperature not being equal.

 In the following, a specific example is given with reference to Fig. 1: In the summer, the indoor target temperature T1 is set to 25 °C, and the indoor temperature is 29 °C, the outdoor temperature is 32 °. When the air conditioner is turned on and the cooling mode or heating mode is not adjusted, since T1<T2, T2<T3 Therefore, enter the cooling mode directly, and mark the current mode state as the first mode, and wait for the next round of control process until T1=T2. At this time, determine that the current mode is the first mode, then wait directly for returning to S1. Carry out the next round of control until T1>T2 Since the current mode is in the first mode, the cooling module is turned off and waiting for the next round of control. The situation of opening the fresh air mode in the summer is as follows: summer night is coming, the indoor temperature is still very high (28 °C), while the outdoor temperature has dropped to 26 °C (25 °C above the indoor target temperature), in which case both fresh air mode and cooling mode are entered; even the outdoor temperature drops to 24 °C (less than the indoor target temperature 25) °C), in this case, you do not need to turn on the cooling mode, just enter the fresh air mode to complete the indoor temperature to the indoor target temperature, until the indoor temperature drops below the indoor target temperature, then close the fresh air module.

 For example: in the morning of the end of winter and early spring, the outdoor temperature is greater than the indoor temperature, set T1 to 22 °C, and obtain the indoor temperature as 15 °C, outdoor temperature is 20 °C, then start fresh air mode and heating mode; if in the afternoon, the outdoor temperature reaches 23 °C, in this case, you do not need to turn on the heating mode, just enter the fresh air mode to complete the indoor temperature to the indoor target temperature, until the indoor temperature is higher than the indoor target temperature, then close the fresh air module. The air conditioner in the prior art needs to be heated from freezing point to warm and comfortable temperature in the cold winter. It is very difficult, requires a large number of air conditioners, and consumes a large amount of electric energy. In sunny weather, the outdoor temperature in winter is greater than The indoor temperature, by using the control method of the present invention, can fully utilize the outdoor fresh air to raise the indoor temperature, and simultaneously heat the indoor air or the fresh air entering the room, save energy, reduce exhaust gas emissions, and conform to the concept of sustainable development.

 In an embodiment of the present invention, an air conditioning apparatus control apparatus is provided. Referring to FIG. 12, the apparatus includes the following modules:

 a temperature acquisition module for acquiring indoor target temperature, indoor temperature, and outdoor temperature;

 a temperature comparison module for comparing the indoor temperature with the indoor target temperature to obtain a temperature comparison result;

 a pattern recognition module for identifying a current mode and obtaining a recognition result;

 a marking module, configured to update the current mode according to the temperature comparison result and the recognition result;

The mode control module is configured to further control the entering the fresh air mode, the heating mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature.

Further, the temperature comparison result includes a first comparison result and a second comparison result, and the controlling to enter the fresh air mode, the heating mode, or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature includes:

In response to the first comparison result, identifying whether the current mode is the first mode, and if not, performing the second mode action, the second mode action comprising: marking the current mode as the second mode, and determining whether the indoor temperature is lower than the outdoor mode Temperature, if yes, enter fresh air mode, otherwise enter heating mode;

And determining, according to the second comparison result, whether the current mode is the second mode, and if not, performing the first mode action, the first mode action includes: marking the current state as the first mode, and determining whether the indoor temperature is higher than the outdoor mode Temperature, if yes, enter fresh air mode, otherwise enter cooling mode.

Further, the temperature comparison result further includes a third comparison result, in response to the third comparison result, identifying whether the current mode is the first mode or the second mode, and if not, determining the indoor temperature change trend, including: if the determination result When the indoor temperature is lowered, the second mode operation is performed, and if the result of the determination is that the indoor temperature is rising, the first mode operation is performed.

It should be noted that, when the air conditioner control device provided by the above embodiment performs the control of the air conditioner, only the division of the above functional modules is illustrated. In actual applications, the functions may be assigned different functions according to needs. The module is completed, that is, the internal structure of the air conditioner control device is divided into different functional modules to complete all or part of the functions described above. In addition, the embodiment of the air conditioner control device provided in this embodiment is the same as the air conditioner control method provided in the foregoing embodiment, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again.

 The embodiment of the invention further provides an air conditioning device controlled by the control method described in the above embodiment, see FIG. The air conditioning device includes a refrigeration module 101, a heating module 201, a fresh air module 301 capable of introducing outdoor air into the room, and an indoor temperature acquisition module 401 capable of acquiring indoor temperature. An outdoor temperature acquisition module 501 and a controller 601 capable of obtaining an outdoor temperature. The indoor temperature acquisition module 401 is capable of transmitting an indoor temperature signal to the controller 601 The outdoor temperature acquisition module 501 is capable of transmitting an outdoor temperature signal to the controller 601. The controller 601 The operation mode of the air conditioner can be identified, the set indoor target temperature command can be acquired, and the refrigeration module 101, the heating module 201, and the fresh air module 301 can be controlled according to the indoor temperature, the outdoor temperature, and the indoor target temperature. The working condition of the opening and closing.

 Example 2

 As shown in FIG. 14 to FIG. 16, an air conditioner according to the present invention includes an indoor unit installed in a room. The outdoor unit 200 and the control unit installed outside the room.

 The indoor unit 100 includes an indoor unit casing 10, a return air temperature sensor 1, a three ventilation valve 9, and a full heat exchange module. , air quality detecting device 8, air purification module 16 and return air filter module 17 .

 The indoor unit casing 10 has an indoor unit cavity, and the indoor unit casing 10 is provided with an indoor air return air outlet 11 , indoor air outlet 12 , outdoor wind inlet 13 and indoor air supply assembly 14 . The return air filter module 17 is disposed at the indoor air return air outlet 11, and the return air temperature sensor 1 And the air quality detecting device 8 is disposed between the return air filtering module 17 and the indoor air return port 11. The air purifying module 16 is disposed at the outdoor air inlet 13 . The return air temperature sensor 1 It is connected to the control unit for detecting the indoor air temperature passing through the return air duct and feeding back to the control unit. The air quality detecting device 8 is connected to the control unit for detecting an air condition parameter of the indoor air.

 The three ventilation valves 9 and the total heat exchange module 15 are disposed in the indoor unit cavity. The full heat exchange module 15 There are mutually returning return heat exchange channels (not shown) and inlet heat exchange channels (not shown). The three ventilation valves 9 are connected to the control unit, and the three valve ports of the three ventilation valves 9 respectively correspond to the indoor air return air outlet 11 The return air heat exchange channel and the indoor air outlet 12 are connected. The three ventilation valves 9 can directly connect the indoor air return air outlet 11 and the indoor air outlet air outlet to form an indoor air return air duct. The inlet air heat exchange channel will have an outdoor air inlet 13 Connect with the indoor air supply assembly 14 to form an indoor air supply duct.

 The outdoor unit 200 includes an outdoor unit casing 20, a return air fan 2, an air outlet fan 3, and an air temperature adjustment module 4 , outlet temperature sensor 5, four ventilation valve 6 and fresh air temperature sensor 7 .

 The outdoor unit casing 20 has an outdoor unit cavity, and the outdoor unit casing 20 is provided with an indoor air outlet 12 The outdoor unit air return port 21, the outdoor unit air outlet 22 connected to the outdoor air inlet 13 , and the return air exhaust port 23 and the fresh air inlet 24 respectively connected to the outdoor.

 The return air blower 2 is disposed at the outdoor unit air return port 21, and the air outlet fan 3 is disposed at the outdoor unit air outlet 22 The outlet air temperature sensor 5 is disposed in the air outlet duct, and the fresh air temperature sensor 7 is disposed at the fresh air inlet port 24. The four ventilation valves 6 and the air temperature adjustment module 4 are both disposed in the outdoor unit Within 200 cavities. The air temperature adjustment module 4 has an air heat exchange line 41. The four valve ports of the four ventilation valves 6 respectively correspond to the outdoor unit air return port 21, the air heat exchange line 41, and the return air exhaust port 23 and the fresh air inlet 24 are connected. The four ventilation valve 6 can directly connect the outdoor unit air return port 21, the air heat exchange line 41 and the outdoor unit air outlet 22, and the outdoor unit air return port 21 An outdoor unit return air duct is formed between the four air venting valves 6 and an outdoor unit air outlet duct is formed between the outdoor unit air outlet 22 and the air heat exchange line 41.

 The control unit is respectively associated with an outlet temperature sensor 5, a fresh air temperature sensor 7, a four ventilation valve 6, and an air temperature adjustment module 4 Connected. The outlet temperature sensor 5 is capable of detecting the temperature of the air and feeding it back to the control unit, which is capable of detecting the fresh air temperature outside the room and feeding it back to the control unit.

 The return air blower 2 draws indoor air from the indoor air return air outlet 11, and the return air temperature sensor 1 The temperature at which the return air is obtained is detected, and the air quality detecting device 8 detects the air quality parameter at which the return air is obtained. The return air is sent to the four ventilation valves 6 through the indoor air return air duct and the outdoor unit return air duct. The air blower 3 The air sent from the air heat exchange line 41 is sequentially sent to the room through the outdoor unit air outlet duct, the indoor unit air duct, and the indoor air supply assembly. The outlet air temperature sensor 5 detects the obtained air heat exchange line 41 The temperature of the air sent out. The control unit is capable of responding to the indoor air temperature fed back by the return air temperature sensor 1, the air temperature in the air outlet duct fed back by the outlet temperature sensor 5, and the fresh air temperature sensor 7 Feedback of fresh air temperature and air quality detection device 8 Feedback of return air quality control air temperature adjustment module 4 Working to three ventilation valves 9 and four ventilation valves 6 Controlling the opening and closing of the valve port and controlling the opening ratio of the valve port, thereby realizing the communication and disconnection control of each air duct, and also controlling the air temperature regulating module to the air heat exchange line 41 The temperature of the air inside is adjusted so that the air temperature sent to the room of the indoor air supply assembly 14 reaches the indoor air target temperature set by the air conditioner.

The air conditioning device has a cooling and heating mode. The control unit is set with a temperature upper limit value higher than the indoor air target temperature and a lower temperature limit value lower than the indoor air target temperature.

 When the air conditioner is in the cooling mode, the indoor unit 100 Wherein, when the indoor air temperature is higher than the upper temperature limit, the control unit controls the three ventilation valves 9 to connect the return air duct, and cut off the indoor air return air outlet 11 and the return air heat exchange passage. At this point, the full heat exchange module 15 The indoor air taken in by the indoor air return air port 11 is not subjected to heat exchange treatment, and the inhaled indoor air is directly sent to the outdoor unit 200 for processing.

 When the indoor air temperature is lower than or equal to the upper temperature limit, the control unit controls the three ventilation valves 9 to set the indoor air return air outlet 11 It is connected with the return air heat exchange passage, and cuts the return air duct that directly communicates between the indoor air return air outlet 11 and the indoor air outlet air outlet 12. At this point, the indoor air has a usable cooling capacity through the full heat exchange module 15 The return air heat exchange channel is processed, and the cooling capacity is recovered and transmitted to the air that is to be sent into the indoor air in the inlet heat exchange channel. In this way, the energy consumption of the air temperature regulation module can be reduced.

 In the outdoor unit 200, when the indoor air temperature is higher than the fresh air temperature, the control unit controls the four ventilation valves 6 to return the outdoor unit air return ports 21 The air is connected to the return air exhaust port 23, and the indoor air is discharged through the return air exhaust port 23, and the four ventilation valves 6 connect the fresh air inlet 24 to the air heat exchange line. Connected, the outdoor fresh air is introduced into the air heat exchange line 41. That is, the indoor air is directly discarded, and the fresh air directly introduced into the outdoor temperature adjustment of the fresh air can also reduce the energy consumption of the air temperature adjustment module.

 When the indoor air temperature is lower than or equal to the fresh air temperature, the control unit controls the four ventilation valves 6 to connect the outdoor unit return air outlet 21 to the air heat exchange pipeline 41 is connected, the indoor air is introduced into the air heat exchange line 41 through the four ventilation valves 6 , and at the same time, the four ventilation valves 6 will be the return air exhaust port 23 and the fresh air inlet 24 shut down. It is also to make full use of the cooling capacity contained in the indoor air and reduce the energy consumption of the air temperature adjustment module.

 In the indoor unit 100 when the air conditioner is in the heating mode When the indoor air temperature is lower than the lower temperature limit, the control unit controls the three ventilation valves 9 to connect the return air duct, and cut off the indoor air return air outlet 11 and the return air heat exchange passage. At this point, the full heat exchange module 15 The indoor air taken in by the indoor air return air outlet 11 is not subjected to heat exchange treatment, and the inhaled indoor air is directly sent to the outdoor unit. Processing inside. When the indoor air temperature is higher than or equal to the upper temperature limit, the control unit controls the three ventilation valves 9 to connect the indoor air return air outlet 11 and the return air heat exchange passage, and the indoor air return air outlet 11 and the indoor air outlet air outlet 12 The directly connected return air duct is cut off. At this point, the indoor air has available heat through the full heat exchange module 15 The return air heat exchange channel is treated, and the heat is recovered and transmitted to the air that is to be sent into the room in the inlet heat exchange passage. In this way, the energy consumption of the air temperature regulation module can be reduced.

 In the outdoor unit 200, when the indoor air temperature is lower than the fresh air temperature, the control unit controls the four ventilation valves 6 to return the outdoor unit air return port 21 The air is connected to the return air exhaust port 23, and the indoor air is discharged through the return air exhaust port 23, and the four ventilation valves 6 connect the fresh air inlet 24 to the air heat exchange line. Connected, the outdoor fresh air is introduced into the air heat exchange line 41. That is, the indoor air is directly discarded, and the fresh air directly introduced into the outdoor temperature adjustment of the fresh air can also reduce the energy consumption of the air temperature adjustment module.

 When the indoor air temperature is higher than or equal to the fresh air temperature, the control unit controls the four ventilation valves 6 to connect the outdoor unit return air outlet 21 to the air heat exchange pipeline 41 is connected, the indoor air is introduced into the air heat exchange line 41 through the four ventilation valves 6 , and at the same time, the four ventilation valves 6 will be the return air exhaust port 23 and the fresh air inlet 24 shut down. It is also designed to make full use of the heat contained in the indoor air and reduce the energy consumption of the air temperature adjustment module.

In addition, an air condition parameter reaching range is set in the control unit. When the control unit determines that the indoor air condition parameter is within the air condition parameter compliance range, the control unit controls the four ventilation valves 6 to the return air exhaust port 23 And the fresh air inlet 24 is closed, ie no need to introduce fresh air, indoor air quality is still available. The control unit controls the four ventilation valves when the control unit determines that the indoor air condition parameter is outside the air condition parameter compliance range. The outdoor air return port 21 is connected to the return air exhaust port 23, and the fresh air inlet port 24 and the air heat exchange line are simultaneously 41 Connected. That is, the indoor air quality is poor, it needs to be replaced, and fresh air is introduced to keep fresh air flowing in the room.

 The air temperature adjustment module 4 includes a heating assembly and a refrigeration assembly. The refrigeration assembly includes a compressor 42 and a condenser connected in sequence 43 , a capillary 44 and an evaporator 45 , the refrigerant flows in a circulation refrigeration circuit formed by the compressor 42 , the condenser 43 , the capillary 44 and the evaporator 45 , the evaporator 45 Set at the air heat exchange line 41, the refrigerant and air heat exchange line 41 The air heat exchange in the air cools the air. Since the refrigeration unit is a conventional component realized by the compression and release principle of the refrigerant, it will not be described in detail herein. The heating assembly includes an electric heater disposed at the air heat exchange conduit 41 46. The electric heater 46 works to heat the air in the air heat exchange line 41. The use of the electric heater 46 improves the heating effect. Due to the compressor 42 during heating The pipeline does not work, and the condenser 43 does not frost, so that the electric heating consumes 10%-30% less energy than the compressor 42. That is, the energy consumption for heating is lower than that by the compression and release principle of the refrigerant.

 The air heat exchange line 41 is surrounded by a heat insulating device which is capable of isolating the heat exchange between the air circulating in the air heat exchange line 41 and the outside. 18 . The temperature of the air sent into the indoor unit 100 is maintained near the indoor air target temperature to prevent waste of heat/cooling.

 The indoor unit 100 and the outdoor unit 200 of the present invention Pipes that are connected to each other do not require copper pipes, and only ordinary pipes are required, which reduces the production cost of air conditioning equipment. Air temperature adjustment in outdoor unit 200 and indoor unit 100 Completed inside, the cooled air does not need to be mixed with the indoor air to get the required temperature, from the indoor air supply assembly 14 The temperature of the sent air is the set indoor air target temperature, and the body's somatosensory comfort is greatly improved. At the same time, the amount of air sucked from the indoor air return port 11 and the indoor air supply assembly 14 The amount of air returned is an equal amount of exchange, maintaining the temperature of the air pressure in the room, effectively preventing the generation of negative pressure, and the comfort of the user in the room can be ensured.

The control unit controls the air temperature adjustment module to adjust the temperature of the indoor air sucked into the outdoor unit by the return air fan according to the air temperature feedback of the return air temperature sensor and the air temperature sensor, thereby ensuring that the temperature of the wind sent by the air supply assembly reaches indoor The air target temperature and the indoor air temperature are adjusted inside the air conditioner. It is not necessary to send the refrigerated air from the air outlet of the air conditioner to mix and exchange heat with the air in the room. The air sent from the air supply air assembly of the present invention is a comfortable wind, and the user's body comfort is greatly improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the patents. The equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims (20)

1. A method for controlling an air conditioner, characterized in that it comprises:

   Obtain indoor target temperature, indoor temperature and outdoor temperature;

   Comparing the indoor temperature and the indoor target temperature, obtaining a temperature comparison result, the temperature comparison result including a first comparison result and a second comparison result;

   Responding to the first comparison result, identifying whether the current mode is the first mode, and if not, performing the second mode action, the second mode action comprising: marking the current mode as the second mode, and according to the indoor temperature and the outdoor temperature Comparing the results, the control enters the fresh air mode or the heating mode;

   Responding to the second comparison result, identifying whether the current mode is the second mode, and if not, performing the first mode action, the first mode action comprising: marking the current state as the first mode, and according to the indoor temperature and the outdoor temperature Comparing the results, the control enters the fresh air mode or the cooling mode.
2. The method according to claim 1, wherein the temperature comparison result further comprises a third comparison result, in response to the third comparison result, identifying whether the current mode is the first mode or the second mode, and if not, determining The indoor temperature change trend includes: when the determination result is that the indoor temperature is decreased, the second mode operation is performed, and if the determination result is that the indoor temperature is increased, the first mode operation is performed.
3. The method according to claim 1, wherein, in response to the first comparison result, controlling the entering the fresh air mode or the heating mode according to the comparison result of the indoor temperature and the outdoor temperature comprises: determining whether the indoor temperature is lower than the outdoor temperature If yes, enter the fresh air mode, otherwise enter the heating mode;

   In response to the second comparison result, controlling the entering the fresh air mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature includes: determining whether the indoor temperature is higher than the outdoor temperature, and if so, entering the fresh air mode, otherwise entering the cooling mode.
4. The method according to claim 1, wherein, after the entering the fresh air mode, the method further comprises: controlling to enter the fresh air mode while entering the heating mode according to the comparison result of the outdoor temperature and the indoor target temperature. mode;

   In response to the second comparison result, the entering the fresh air mode further comprises: entering the cooling mode while controlling to enter the fresh air mode according to the comparison result of the outdoor temperature and the indoor target temperature.
5. The method according to claim 1, wherein, in response to the first comparison result, controlling the entering the fresh air mode or the heating mode according to the comparison result of the indoor temperature and the outdoor temperature comprises: determining the temperature of the indoor temperature and the outdoor temperature Whether the difference exceeds the preset range, and if so, enters the heating mode, otherwise enters the fresh air mode;

   In response to the second comparison result, controlling the entering the fresh air mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature includes: determining whether the temperature difference between the indoor temperature and the outdoor temperature exceeds a preset range, and if yes, entering the cooling mode Otherwise enter the fresh air mode.
6. The method according to claim 1, wherein in response to the first comparison result, identifying whether the current mode is the first mode, and if so, further determining whether the difference between the indoor target temperature and the indoor temperature exceeds the first overshooting amplitude If yes, the second mode action is performed, otherwise the cooling mode and/or the fresh air mode are exited;

   And determining, according to the second comparison result, whether the current mode is the second mode, and if yes, further determining whether the difference between the indoor temperature and the indoor target temperature exceeds the second overshoot amplitude, and if yes, performing the first mode action, otherwise exiting Hot mode and / or fresh air mode.
7. The method according to claim 2, wherein the first comparison result is that the indoor target temperature is higher than the indoor temperature, the second comparison result is that the indoor target temperature is lower than the indoor temperature, and the third comparison result is an indoor target. The temperature is equal to the room temperature.
8. An air conditioner control device characterized by comprising the following modules:

   a temperature acquisition module for acquiring indoor target temperature, indoor temperature, and outdoor temperature;

   a temperature comparison module for comparing the indoor temperature with the indoor target temperature to obtain a temperature comparison result;

   a pattern recognition module for identifying a current mode and obtaining a recognition result;

   a marking module, configured to update the current mode according to the temperature comparison result and the recognition result;

   The mode control module is configured to further control the entering the fresh air mode, the heating mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature.
9. The apparatus according to claim 8, wherein said temperature comparison result comprises a first comparison result and a second comparison result, said controlling to enter a fresh air mode and a heating mode according to a comparison result of the indoor temperature and the outdoor temperature Or cooling mode includes:

   In response to the first comparison result, identifying whether the current mode is the first mode, and if not, performing the second mode action, the second mode action comprising: marking the current mode as the second mode, and determining whether the indoor temperature is lower than the outdoor mode Temperature, if yes, enter fresh air mode, otherwise enter heating mode;

   And determining, according to the second comparison result, whether the current mode is the second mode, and if not, performing the first mode action, the first mode action includes: marking the current state as the first mode, and determining whether the indoor temperature is higher than the outdoor mode Temperature, if yes, enter fresh air mode, otherwise enter cooling mode.
10. The apparatus according to claim 9, wherein the temperature comparison result further comprises a third comparison result, in response to the third comparison result, identifying whether the current mode is the first mode or the second mode, and if not, determining The indoor temperature change trend includes: when the determination result is that the indoor temperature is decreased, the second mode operation is performed, and if the determination result is that the indoor temperature is increased, the first mode operation is performed.
11. The device according to claim 9, wherein, after the entering the fresh air mode, the method further comprises: controlling to enter the fresh air mode while entering the heating mode according to the comparison result of the outdoor temperature and the indoor target temperature. mode;

    In response to the second comparison result, the entering the fresh air mode further comprises: entering the cooling mode while controlling to enter the fresh air mode according to the comparison result of the outdoor temperature and the indoor target temperature.
12. The apparatus according to claim 9, wherein, in response to the first comparison result, controlling the entering the fresh air mode or the heating mode according to the comparison result of the indoor temperature and the outdoor temperature comprises: determining the temperature of the indoor temperature and the outdoor temperature Whether the difference exceeds the preset range, and if so, enters the heating mode, otherwise enters the fresh air mode;

    In response to the second comparison result, controlling the entering the fresh air mode or the cooling mode according to the comparison result of the indoor temperature and the outdoor temperature includes: determining whether the temperature difference between the indoor temperature and the outdoor temperature exceeds a preset range, and if yes, entering the cooling mode Otherwise enter the fresh air mode.
13. The apparatus according to claim 9, wherein, in response to the first comparison result, identifying whether the current mode is the first mode, and if so, further determining whether the difference between the indoor target temperature and the indoor temperature exceeds the first overshooting amplitude If yes, the second mode action is performed, otherwise the cooling mode and/or the fresh air mode are exited;

    And determining, according to the second comparison result, whether the current mode is the second mode, and if yes, further determining whether the difference between the indoor temperature and the indoor target temperature exceeds the second overshoot amplitude, and if yes, performing the first mode action, otherwise exiting Hot mode and / or fresh air mode.
14. The method according to claim 10, wherein the first comparison result is that the indoor target temperature is higher than the indoor temperature, the second comparison result is that the indoor target temperature is lower than the indoor temperature, and the third comparison result is an indoor target. The temperature is equal to the room temperature.
15. An air conditioner comprising an indoor unit (100) installed in a room, an outdoor unit (200) installed outside the room, and a control unit, wherein the indoor unit (100) includes an indoor unit casing ( 10) and return air temperature sensor (1),

    The indoor unit casing (10) has an indoor unit cavity, and the indoor unit casing (10) is provided with an indoor air return air outlet (11), an indoor air outlet (12), and an outdoor air inlet (13). And an indoor air supply assembly (14),

    An indoor unit return air duct connecting the indoor air return air outlet (11) and the indoor air outlet air outlet (12) and the outdoor air inlet air inlet (13) and the indoor air supply assembly (14) are formed in the indoor unit cavity. Indoor unit air duct,

    The return air temperature sensor (1) is disposed at the indoor air return air outlet (11) and is connected to the control unit for detecting the indoor air temperature passing through the return air duct and feeding back to the control unit;

    The outdoor unit (200) includes an outdoor unit casing (20), a return air fan (2), an air outlet fan (3), an air temperature adjustment module (4), and an outlet air temperature sensor (5).

    The outdoor unit casing (20) has an outdoor unit cavity, and the outdoor unit casing (20) is provided with an outdoor unit air return port (21) communicating with the indoor air outlet port (12), and an outdoor air inlet port. (13) The connected outdoor unit air outlet (22),

    The air temperature adjustment module (4) has an air heat exchange pipe (41), and the outdoor machine casing (20) is formed with an outdoor air heat exchange pipe (41) and an outdoor air return port (21). The outdoor air outlet duct of the return air duct and the connecting air heat exchange line (41) and the outdoor unit air outlet (22),

    The return air blower (2) is disposed at an outdoor unit air return port (21), the air outlet fan (3) is disposed at an outdoor unit air outlet (22), and the air outlet temperature sensor (5) is disposed at an outlet In the wind tunnel, the air temperature adjustment module (4) is connected to the control unit, and when the air conditioner operates, the return air blower (2) takes in indoor air and sequentially returns to the indoor air return air passage and the outdoor unit. The air duct is sent to the air heat exchange line (41), and the air blown by the air blower (3) sequentially passes through the air duct of the outdoor unit, the air duct of the indoor unit, and the air duct of the indoor unit. The indoor air supply assembly (14) is sent into the room, and the control unit can control the air according to the indoor air temperature fed back by the return air temperature sensor (1) and the air temperature in the air outlet duct fed back by the air outlet temperature sensor (5). The temperature adjustment module (4) works to adjust the temperature of the air in the air heat exchange line (41) so that the air temperature of the indoor air supply assembly (14) is sent to the room to reach the indoor air target temperature set by the air conditioner.
16. An air conditioning apparatus according to claim 15, wherein said outdoor unit (200) further comprises four ventilation valves (6) and fresh air temperature sensors (7) respectively connected to the control unit, said outdoor casing The body (20) is further provided with a return air exhaust port (23) and a fresh air air inlet port (24) respectively connected to the outdoor, and the four ventilation valves (6) are disposed on the outdoor unit return air duct and respectively respectively and the outdoor unit The return air outlet (21), the air heat exchange conduit (41), the return air exhaust vent (23), and the fresh air inlet (24) are connected, and the fresh air temperature sensor (7) is disposed at the fresh air inlet (24). The fresh air temperature sensor (24) is capable of detecting the fresh air temperature outside the room and feeding back to the control unit, and the control unit is capable of controlling the opening and closing of the respective valve ports of the four ventilation valves (6) according to the indoor air temperature and the fresh air temperature.
17. An air conditioning apparatus according to claim 16, wherein said air conditioning apparatus has a cooling and heating mode,

    When the air conditioning device is in the cooling mode, when the indoor air temperature is higher than the fresh air temperature, the control unit controls the four ventilation valves (6) to connect the outdoor unit air return port (21) with the return air exhaust port (23), The indoor air is discharged through the return air exhaust port (23), and the four ventilation valve (6) connects the fresh air inlet (24) with the air heat exchange pipe (41), and introduces the outdoor fresh air into the air heat exchange pipe. (41); when the indoor air temperature is lower than or equal to the fresh air temperature, the control unit controls the four ventilation valve (6) to connect the outdoor unit air return port (21) with the air heat exchange line (41), the indoor The air is introduced into the air heat exchange line (41) through the four ventilation valves (6), and the four ventilation valves (6) close the return air outlet (23) and the fresh air inlet (24);

    When the air conditioner is in the heating mode, when the indoor air temperature is lower than the fresh air temperature, the control unit controls the four ventilation valves (6) to connect the outdoor air return port (21) and the return air exhaust port (23). The indoor air is discharged through the return air exhaust port (23), and the four ventilation valve (6) communicates the fresh air inlet (24) with the air heat exchange line (41), and introduces the outdoor fresh air into the air heat exchange tube. In the road (41); when the indoor air temperature is higher than or equal to the fresh air temperature, the control unit controls the four ventilation valve (6) to connect the outdoor unit return air outlet (21) with the air heat exchange line (41), The indoor air is introduced into the air heat exchange line (41) through the four ventilation valves (6), and the four ventilation valves (6) close the return air exhaust port (23) and the fresh air inlet (24).
18. An air conditioning apparatus according to claim 16, wherein said indoor unit (100) further comprises air quality detecting means (8) disposed at the indoor air return air outlet (11), said air quality detecting means (8) connected to the control unit, the air quality detecting device (8) is capable of detecting an air condition parameter of the indoor air, wherein the control unit sets an air condition parameter reaching range, and when the control unit determines that the indoor air condition parameter is in the air Within the scope of the condition parameter, the control unit controls the four ventilation valves (6) to close the return air exhaust port (23) and the fresh air inlet port (24); when the control unit determines that the indoor air condition parameter is in the air condition parameter Outside the scope, the control unit controls the four ventilation valves (6) to communicate the outdoor air return port (21) with the return air exhaust port (23), and simultaneously the fresh air inlet (24) and the air heat exchange line ( 41) Connected.
19. An air conditioning apparatus according to claim 15, wherein said indoor unit (100) further comprises three ventilation valves (9) and a total heat exchange module (15) located in the indoor unit casing (10), The full heat exchange module (15) has a return air heat exchange channel and an air inlet heat exchange channel, the three ventilation valves (9) are connected to the control unit, and the three ventilation valves (9) are arranged in the return air On the air duct, the three valve ports of the three ventilation valves (9) are respectively connected with the indoor air return air outlet (11), the return air heat exchange passage and the indoor air outlet air outlet (12), and the return air heat exchange passage will The indoor air outlet (12) is connected to the three ventilation valve (9), and the inlet air heat exchange passage connects the outdoor air inlet (13) and the indoor air supply assembly (14), and the control unit can be based on indoor air. The temperature and indoor air target temperature control the opening and closing of each valve port of the three ventilation valves (9).
20. An air conditioning apparatus according to claim 19, wherein said air conditioning apparatus has a cooling and heating mode, said control unit is set with a temperature upper limit value higher than a target temperature of the indoor air, and lower than the indoor temperature. The lower temperature limit of the air target temperature,

    When the air conditioning device is in the cooling mode, when the indoor air temperature is higher than the upper temperature limit, the control unit controls the three ventilation valves (9) to connect the return air passage, and exchanges the indoor air return air outlet (11) and the return air. The hot channel is cut off; when the indoor air temperature is lower than or equal to the upper temperature limit, the control unit controls the three ventilation valves (9) to connect the indoor air return air outlet (11) and the return air heat exchange passage, and the indoor air return air inlet (11) The return air duct that is directly connected to the indoor air outlet (12) is cut off;

    When the air conditioning device is in the heating mode, when the indoor air temperature is lower than the lower temperature limit, the control unit controls the three ventilation valves (9) to connect the return air duct, and the indoor air return air outlet (11) and the return air The heat exchange channel is cut off; when the indoor air temperature is higher than or equal to the upper temperature limit, the control unit controls the three ventilation valves (9) to connect the indoor air return air outlet (11) and the return air heat exchange passage, and the indoor air return The return air duct that is directly connected to the tuyere (11) and the indoor air outlet (12) is cut off.