WO2023093286A1 - Fresh air device control method and apparatus, storage medium, and fresh air device - Google Patents

Abstract

The present application relates to the technical field of fresh air devices, and discloses a fresh air device control method and apparatus, a storage medium, and a fresh air device. The fresh air device comprises a first heat exchange system and a second heat exchange system. According to the method, when a mode setting instruction is received, a target operation mode is determined according to the mode setting instruction, and operation parameters of the first heat exchange system and the second heat exchange system in the fresh air device are adjusted according to the target operation mode, such that the energy efficiency state of the fresh air device is improved.

Description

Fresh air equipment control method, device, storage medium and fresh air equipment

related application

This application claims the priority of Chinese patent applications with application numbers 202111417547.8 and 202122922745.1 filed on November 24, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the technical field of fresh air equipment, and in particular to a fresh air equipment control method, device, storage medium and fresh air equipment.

Background technique

Nowadays, with the improvement of the quality of life, the requirements for the indoor thermal environment are no longer just hot and cold, but also rise to the demand for health, which puts forward higher requirements for freshness and cleanliness. As an effective and important solution, fresh air is becoming more and more important. are being applied more and more.

Due to the limitations of price, installation and size of traditional room air conditioners, the fresh air is only filtered and sent directly into the room, and the air conditioner bears the load. On the other hand, with the development of building energy conservation, the airtightness is getting better and better, and ultra-low energy consumption buildings are increasing day by day. Fresh air fans, as the key indoor environmental treatment equipment, not only clean the fresh air, but also need to deal with the temperature and humidity of the fresh air. No matter what kind of fresh air equipment it is, the heat and humidity treatment of fresh air is added on the basis of the original indoor heat and humidity environment treatment, which brings about an increase in energy consumption. Therefore, some fresh air energy-saving solutions have appeared in the development stage of fresh air fans. The existing mature product solutions are mainly full heat exchange recovery, or heat pump reheat recovery, or dual cold source pre-cooling and dehumidification separation.

However, total heat exchange recovery can achieve heat and moisture recovery, but there are difficulties in processing, large size, large wind resistance, easy to be dirty and blocked, easy to freeze in winter, high energy consumption of fans, high cost, and efficiency limited by indoor and outdoor temperature differences. question. Heat pump reheat recovery can improve heat pump efficiency, but it is only efficient in cooling and dehumidification, and most of them are only one-level reheat recovery. The fresh air temperature adjustment capacity is limited, and dehumidification and energy saving cannot be considered at the same time. The separation of dual cooling sources for pre-cooling and dehumidification can improve the energy waste of refrigeration and dehumidification, but the fresh air temperature adjustment capacity is limited, and the water cooling scheme itself has heat loss from secondary heat exchange, and there is a waste of cooling heat, which only improves the processing efficiency of fresh air. However, the energy consumption is transferred to the refrigeration unit.

None of the above schemes can take into account the needs of heating and temperature adjustment well. In winter, electric auxiliary heating is used to raise the temperature, or part of it is used in conjunction with total heat exchange. Very inefficient.

The above content is only used to assist in understanding the technical solution of the present application, and does not mean that the above content is admitted as prior art.

Contents of the invention

The main purpose of this application is to provide a fresh air equipment control method, device, storage medium and fresh air equipment, aiming to solve the technical problem that the existing fresh air equipment cannot meet the heating and temperature adjustment requirements well and has low efficiency.

To achieve the above purpose, the present application provides a fresh air equipment control method, the fresh air equipment control method is applied to the fresh air equipment, the fresh air equipment includes: a first heat exchange system and a second heat exchange system, the first heat exchange system The thermal system is used for exchanging heat between the fresh air channel and the outdoor environment, and the second heat exchange system is used for exchanging heat between the fresh air channel and the exhaust air channel;

Described method comprises the following steps:

The fresh air equipment control method includes the following steps:

get the target mode of operation; and

The operating states of the first heat exchange system and the second heat exchange system are adjusted according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency.

In one embodiment, the first heat exchange system includes a first fresh air heat exchanger and a second fresh air heat exchanger arranged in the fresh air passage, and the second heat exchange system includes a first fresh air heat exchanger arranged in the fresh air passage The third fresh air heat exchanger and the fourth fresh air heat exchanger inside;

The step of adjusting the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency, includes:

When the target operation mode is a cooling mode, adjusting the operation modes of the first heat exchange system and the second heat exchange system to a cooling mode; and

Controlling the first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger to operate as evaporators, so that the fresh air equipment has high energy efficiency state.

In an embodiment, the fresh air equipment further includes an outdoor heat exchanger arranged in an outdoor environment, a second blower arranged in the fresh air passage, and a third blower arranged in the exhaust passage; the The first heat exchange system further includes a first compressor, a first four-way valve, a first throttling element, a second throttling element, and an outdoor heat exchanger, the first compressor, the first four-way valve, The outdoor heat exchanger, the first throttling element, the first fresh air heat exchanger, the second throttling element, and the second fresh air heat exchanger are sequentially arranged in series, and the second heat exchanger The system also includes a second compressor, a second four-way valve, a third throttling element, a fourth throttling element, and an exhaust heat exchanger, the second compressor, the second four-way valve, the exhaust The air heat exchanger, the third throttling element, the third fresh air heat exchanger, the fourth throttling element and the fourth fresh air heat exchanger are sequentially arranged in series;

The first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger and the fourth fresh air heat exchanger are controlled to operate as evaporators, so that the fresh air equipment is in After the steps of Energy Efficient State, also include:

obtaining a first operating temperature parameter and a first target temperature parameter; and

When the first operating temperature parameter is lower than the first target temperature parameter, reduce the speed of the first compressor, increase the opening degree of the first throttling element, reduce the speed of the second fan, at least one of reducing the rotational speed of the second compressor and increasing the opening of the third throttling element;

When the first operating temperature parameter is greater than the first target temperature parameter, increase the rotation speed of the first compressor, decrease the opening degree of the first throttling element, increase the rotation speed of the first fan, At least one of increasing the rotation speed of the third fan, increasing the rotation speed of the second compressor, and reducing the opening degree of the third throttling element.

In one embodiment, the first heat exchange system includes a first fresh air heat exchanger and a second fresh air heat exchanger arranged in the fresh air passage, and the second heat exchange system includes a first fresh air heat exchanger arranged in the fresh air passage The third fresh air heat exchanger and the fourth fresh air heat exchanger inside;

The step of adjusting the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency, includes:

When the target operation mode is a dehumidification mode or a reheat dehumidification mode, adjusting the operation modes of the first heat exchange system and the second heat exchange system to a cooling mode;

controlling the first fresh air heat exchanger to operate as a condenser, and the second fresh air heat exchanger to operate as an evaporator; and

The third fresh air heat exchanger is controlled to operate as a condenser, and the fourth fresh air heat exchanger is operated as an evaporator, so that the fresh air equipment is in a state of high energy efficiency.

In an embodiment, the fresh air equipment further includes an outdoor heat exchanger arranged in an outdoor environment, a second blower arranged in the fresh air passage, and a third blower arranged in the exhaust passage; the The first heat exchange system further includes a first compressor, a first four-way valve, a first throttling element, a second throttling element, and an outdoor heat exchanger, the first compressor, the first four-way valve, The outdoor heat exchanger, the first throttling element, the first fresh air heat exchanger, the second throttling element, and the second fresh air heat exchanger are sequentially arranged in series, and the second heat exchanger The system also includes a second compressor, a second four-way valve, a third throttling element, a fourth throttling element, and an exhaust heat exchanger, the second compressor, the second four-way valve, the exhaust The air heat exchanger, the third throttling element, the third fresh air heat exchanger, the fourth throttling element and the fourth fresh air heat exchanger are sequentially arranged in series;

After the step of controlling the third fresh air heat exchanger to operate as a condenser, and the fourth fresh air heat exchanger to operate as an evaporator, so that the fresh air equipment is in a state of high energy efficiency, it also includes:

Obtain operating humidity parameters and target humidity parameters;

When the operating humidity parameter is less than the target humidity parameter, reduce the rotation speed of the first compressor, increase the opening degree of the second throttling element, decrease the rotation speed of the second compressor, increase at least one of the opening degrees of the fourth throttle element;

When the operating humidity parameter is greater than the target humidity parameter, increase the rotation speed of the first compressor, decrease the opening degree of the second throttling element, increase the rotation speed of the second compressor, decrease the at least one of the opening degrees of the fourth throttle element.

In an embodiment, when the operating humidity parameter is lower than the target humidity parameter, reduce the rotation speed of the first compressor, increase the opening degree of the first throttling element, and decrease the opening degree of the second throttle element. After the steps of at least one of the steps of reducing the speed of the fan, reducing the speed of the second compressor, and increasing the opening degree of the third throttling element, it also includes:

Obtaining a second operating temperature parameter and a second target temperature parameter;

When the second operating temperature parameter is lower than the second target temperature parameter, reduce the speed of the third fan, increase the speed of the second compressor, and reduce the opening degree of the fourth throttling element at least one of

When the second operating temperature parameter is greater than the second target temperature parameter, at least one of increasing the rotation speed of the third fan, decreasing the rotation speed of the second compressor, and increasing the opening degree of the fourth throttling element.

In one embodiment, the first heat exchange system includes a first fresh air heat exchanger and a second fresh air heat exchanger arranged in the fresh air passage, and the second heat exchange system includes a first fresh air heat exchanger arranged in the fresh air passage The third fresh air heat exchanger and the fourth fresh air heat exchanger inside;

The step of adjusting the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency, includes:

When the target operation mode is a heating mode, adjusting the operation modes of the first heat exchange system and the second heat exchange system to a heating mode; and

Controlling the first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger to operate as condensers, so that the fresh air equipment is at high energy efficiency state.

In an embodiment, the fresh air equipment further includes an outdoor heat exchanger arranged in an outdoor environment, a second blower arranged in the fresh air passage, and a third blower arranged in the exhaust passage; the The first heat exchange system further includes a first compressor, a first four-way valve, a first throttling element, a second throttling element, and an outdoor heat exchanger, the first compressor, the first four-way valve, The outdoor heat exchanger, the first throttling element, the first fresh air heat exchanger, the second throttling element, and the second fresh air heat exchanger are sequentially arranged in series, and the second heat exchanger The system also includes a second compressor, a second four-way valve, a third throttling element, a fourth throttling element, and an exhaust heat exchanger, the second compressor, the second four-way valve, the exhaust The air heat exchanger, the third throttling element, the third fresh air heat exchanger, the fourth throttling element and the fourth fresh air heat exchanger are sequentially arranged in series;

The first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger are controlled to operate as condensers to improve the condensation of the fresh air equipment. After the step of improving the energy efficiency status of the fresh air equipment, the area of the fresh air equipment also includes:

Obtain a third operating temperature parameter and a third target temperature parameter; and

When the third operating temperature parameter is less than the third target temperature parameter, increase the rotation speed of the first compressor, decrease the opening degree of the first throttling element, increase the rotation speed of the first fan, at least one of increasing the speed of the third fan, increasing the speed of the second compressor, and reducing the opening of the third throttling element;

When the third operating temperature parameter is greater than the third target temperature parameter, reduce the speed of the first compressor, increase the opening degree of the first throttling element, reduce the speed of the second fan, At least one of reducing the rotation speed of the second compressor and increasing the opening degree of the third throttling element.

In addition, in order to achieve the above purpose, the present application also proposes a control device for fresh air equipment, which includes the following modules:

An instruction receiving module, configured to acquire a target operating mode;

A parameter adjustment module, configured to adjust the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency.

In addition, to achieve the above purpose, the present application also proposes a storage medium, on which a fresh air equipment control program is stored, and when the fresh air equipment control program is executed by a processor, the above mentioned fresh air equipment control method is implemented.

In addition, in order to achieve the above purpose, this application also proposes a fresh air device, the fresh air device includes: a first heat exchange system and a second heat exchange system, the first heat exchange system is used The second heat exchange system is used for exchanging heat between the fresh air passage and the exhaust air passage; the fresh air equipment also includes: a memory, a processor, and a storage device that is stored in the memory and can be stored in the memory The fresh air equipment control program running on the processor, when the fresh air equipment control program is executed by the processor, implements the fresh air equipment control method as described above.

The fresh air equipment of the present application includes a first heat exchange system and a second heat exchange system. When receiving a mode setting instruction, the target operation mode is determined according to the mode setting instruction, and the first heat exchange system and the second heat exchange system in the fresh air equipment are adjusted according to the target operation mode. The operating parameters of the heat exchange system improve the energy efficiency of the fresh air equipment. Since multiple heat exchange systems are installed in the fresh air equipment, the operation mode combination of the first heat exchange system and the second heat exchange system can be adjusted according to the target operation mode to meet the requirements of the outlet air temperature in different seasons throughout the year, and it can also be adjusted according to the target operation mode. The target operation mode adjusts the operating status of the first heat exchange system and the second heat exchange system, so that the fresh air equipment is in a state of high energy efficiency, so that the fresh air equipment can meet the heating and temperature adjustment requirements while ensuring efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of an electronic device in a hardware operating environment involved in an embodiment of the present application;

FIG. 2 is a schematic flow chart of the first embodiment of the fresh air equipment control method of the present application;

FIG. 3 is a schematic structural diagram of a fresh air device according to a first embodiment of the present application;

Fig. 4 is a schematic structural diagram of the fresh air channel in Fig. 3;

5 is a schematic structural diagram of a fresh air device according to a second embodiment of the present application;

Fig. 6 is a schematic structural view of place A in Fig. 5;

FIG. 7 is a schematic flow chart of the second embodiment of the fresh air equipment control method of the present application;

FIG. 8 is a schematic flow chart of a third embodiment of the fresh air equipment control method of the present application;

FIG. 9 is a schematic flowchart of a fourth embodiment of the fresh air equipment control method of the present application;

Fig. 10 is a structural block diagram of the first embodiment of the fresh air equipment control device of the present application.

label	name	label		name
100	Fresh air equipment	3	The first heat exchange system
1	Fresh air channel	31	first compressor
11	The first fresh air heat exchanger	32	The first four-way valve
12	The second fresh air heat exchanger	33	Outdoor heat exchanger
13	The third fresh air heat exchanger	331	outdoor fan
14	The fourth fresh air heat exchanger	34	first throttle element
1a	Fresh air import	35	second throttle element
1b	fresh air outlet	4	Second heat exchange system
15	fresh air fan	41	second compressor
2	exhaust channel	42	Second four-way valve
twenty one	Exhaust heat exchanger	43	third throttling element
2a		Exhaust inlet	44	Fourth throttle element
2b		Exhaust outlet	5	integrated compressor
twenty two	Exhaust fan	the	the

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of a fresh air device in a hardware operating environment involved in the solution of the embodiment of the present application.

As shown in FIG. 1, the electronic device may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wireless-Fidelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001 .

Those skilled in the art can understand that the structure shown in FIG. 1 does not constitute a limitation on the electronic device, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

As shown in FIG. 1 , the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a fresh air device control program.

In the electronic device shown in Figure 1, the network interface 1004 is mainly used to connect to the external network and perform data communication with other network devices; the user interface 1003 is mainly used to connect to user equipment and perform data communication with the user equipment; The device calls the fresh air device control program stored in the memory 1005 through the processor 1001, and executes the fresh air device control method provided in the embodiment of the present application.

An embodiment of the present application provides a method for controlling fresh air equipment. Referring to FIG. 2 , FIG. 2 is a schematic flowchart of a first embodiment of a method for controlling fresh air equipment of the present application.

For ease of understanding, reference is made to Fig. 3 to Fig. 6 for illustration. Fig. 3 to Fig. 6 are system schematic diagrams of fresh air equipment.

Please refer to Fig. 3 and Fig. 4, the fresh air equipment 100 provided by the present application includes a casing, a first heat exchange system 3 and a second heat exchange system 4, the casing is provided with a fresh air passage 1 and an exhaust passage 2; The first heat exchange system 3 is used for exchanging heat between the fresh air passage 1 and the outdoor environment; the second heat exchange system 4 is used for exchanging heat between the fresh air passage 1 and the exhaust air passage 2 heat; multiple fresh air heat exchangers are provided in the fresh air channel 1, at least one of the multiple fresh air heat exchangers is on the refrigerant flow path of the first heat exchange system 3, and at least one is on the first heat exchange system 3 The refrigerant flow path of the second heat exchange system 4 . In this solution, when the fresh air blower equipment is in cooling mode, heating mode and dehumidification mode, it is in the fresh air heat exchanger of the first heat exchange system 3 and in the second heat exchange system 4 The fresh air heat exchanger can form two low-pressure ratio refrigerant cycles to achieve high-efficiency operation; at the same time, the heat exchange between the first heat exchange system 3 and the outdoor environment, and the second heat exchange system 4 and the outdoor environment are used. Heat exchange is performed between the exhaust channels 2 to achieve both heating and temperature adjustment requirements and high efficiency and energy saving.

It should be noted that the heat exchanger in this embodiment is a device for exchanging heat between refrigerant and air, and the air is cooled and dehumidified or heated and reheated by refrigerants of different temperatures. The above-mentioned heat exchanger belongs to the prior art, and its specific The setting form will not be repeated here.

In addition, the first heat exchange system 3 is a refrigerating cycle system for cooling and reheating the fresh air, absorbing heat through the pre-cooling heat exchanger for cooling, and then reheating the dehumidified air through supercooling. The second heat exchange system 4 is used in a refrigeration cycle system for fresh air dehumidification and reheating. The dehumidification heat exchanger absorbs heat and dehumidifies, and then reheats the dehumidified air through condensation.

It can be understood that pre-cooling refers to a process in which the temperature of the refrigerant is lower than that of the air before passing through the heat exchanger, and the air is cooled or dehumidified. Dehumidification refers to the process in which the refrigerant is lower than the dew point temperature of the air before passing through the heat exchanger, and the air is cooled and dehumidified. Reheating refers to the process in which the temperature of the refrigerant is higher than that of the air before passing through the heat exchanger, and the air is heated and reheated. Condensation reheating refers to the process of heating and reheating air with high-temperature gaseous state, or gas-liquid two-phase, or liquid refrigerant.

Further, the number of fresh air heat exchangers of the first heat exchange system 3 and the second heat exchange system 4 is not limited. In one embodiment, at least two of the fresh air heat exchangers are set on the refrigerant flow path of the first heat exchange system 3; and/or, at least two of the fresh air heat exchangers are set on the second heat exchanger The refrigerant flow path of the thermal system 4 .

The relative positions of the fresh air heat exchange air in the first heat exchange system 3 and the second heat exchange system 4 are not limited. In one embodiment, in order to improve the operating efficiency of the fresh air installation, in the fresh air passage 1, from the outdoor to the indoor direction, at least two fresh air The heat exchangers are arranged alternately with at least two fresh air heat exchangers arranged on the refrigerant flow path of the second heat exchange system 4 .

Further, a first refrigerant flow path is formed on the first heat exchange system 3, and the first heat exchange system 3 includes a first compressor 31, a second A four-way valve 32, an outdoor heat exchanger 33, and a first throttling element 34; two fresh air heat exchangers are arranged on the first refrigerant flow path, and two fresh air heat exchangers are arranged between the two fresh air heat exchangers. There is a second throttling element 35, and the two fresh air heat exchangers include the first fresh air heat exchanger 11 and the second fresh air heat exchanger 12; in the fresh air channel, the first fresh air heat exchanger 11 On the side of the second fresh air heat exchanger 12 away from the air inlet of the fresh air channel 1; on the first refrigerant flow path, the first throttling element 34, the first fresh air heat exchanger 11 , the second throttling element 35 , the second fresh air heat exchanger 12 and the first four-way valve 32 are connected in sequence.

It can be understood that the above-mentioned first heat exchange system 3 constitutes a direct expansion air source heat pump system, and the refrigerant directly expands and refrigerates to exchange heat with the air without secondary heat exchange through the refrigerant, thereby improving refrigeration energy efficiency. In addition, the first fresh air heat exchanger 11 and the second fresh air heat exchanger 12 can be arranged close to the air inlet of the fresh air passage 1, or can be arranged near the air outlet of the fresh air passage 1, which is not limited here. It should be noted that the air inlet of the fresh air channel 1 here is the fresh air inlet 1a, and the air outlet of the fresh air channel 1 is the fresh air outlet 1b.

Further, in order to meet the needs of different outlet air temperatures and energy saving, the heat exchange area of the outdoor heat exchanger 33 is S1, the heat exchange area of the first fresh air heat exchanger 11 is S2, and S2/S1≤0.5.

Further, the fresh air equipment 100 further includes an outdoor fan 331 , and the outdoor fan 331 is set corresponding to the outdoor heat exchanger 33 . In this solution, the outdoor fan 331 is used to improve the heat dissipation capacity of the outdoor heat exchanger 33 .

Further, a second refrigerant flow path is formed on the second heat exchange system 4, and the second heat exchange system 4 includes a second compressor 41, a first Two four-way valves 42, an exhaust air heat exchanger 21, and a third throttling element 43; two fresh air heat exchangers are arranged on the second refrigerant flow path, and two fresh air heat exchangers are arranged between the two fresh air heat exchangers. A fourth throttling element 44 is provided, and the two fresh air heat exchangers include the third fresh air heat exchanger 13 and the fourth fresh air heat exchanger 14; in the fresh air channel, the third fresh air heat exchanger 13 On the side of the fourth fresh air heat exchanger 14 away from the air inlet of the fresh air channel 1; on the second refrigerant flow path, the third throttling element 43, the third fresh air heat exchanger 13. The fourth throttling element 44 , the fourth fresh air heat exchanger 14 and the second four-way valve 42 are connected in sequence.

It can be understood that the third fresh air heat exchanger 13 and the fourth fresh air heat exchanger 14 can be arranged close to the air inlet of the fresh air passage 1, or can be arranged near the air outlet of the fresh air passage 1, and there is no limitation here . It should be noted that the air inlet of the fresh air channel 1 here is the fresh air inlet 1a, and the air outlet of the fresh air channel 1 is the fresh air outlet 1b.

Further, the heat exchange area of the exhaust air heat exchanger 21 is S4, the heat exchange area of the third fresh air heat exchanger 13 is S5, and S5/S4≤1.5.

It should be noted that the fresh air equipment can also include more or fewer components than shown in the figure, or combine certain components to obtain different component arrangements, for example: setting more heat exchange systems in the fresh air equipment 100 or adding various The number of heat exchangers in the heat exchange system.

In one embodiment, the above-mentioned first heat exchange system 3 and the second heat exchange system 4 are installed at the same time, and two sets of direct expansion heat pumps are configured for heat recovery and double reheating and supercooling systems to form two sets of direct heat exchange systems. The expansion air source heat pump cycle enables the fresh air equipment 100 to have two sets of different condensation temperatures and evaporation temperatures. On the basis of this system structure, in order to meet the energy-saving requirements of the year-round cooling and heating operation of the fresh air, by switching the four-way valve and controlling the throttling components, the sensible heat recovery of the exhaust air and the supercooling reheat recovery in the cooling mode can be realized. , Exhaust air full heat recovery in heating mode, and dehumidification reheat recovery in dehumidification mode.

And by alternately setting the fresh air heat exchangers of the first heat exchange system 3 and the second heat exchange system 4 in the fresh air passage 1, the condensation heat recovery and reheat recovery are realized respectively, which improves the The system subcooling degree of the first heat exchange system 3 and the second heat exchange system 4, and realize the reheating and subcooling adjustment of multiple working conditions throughout the year by cooperating with throttling components, so that both systems operate at low pressure ratios, Improve the operating energy efficiency of the fresh air system throughout the year, and by adjusting the combination of operating modes of the dual systems and controlling the opening of the throttling parts, the temperature requirements of the air outlet in different seasons throughout the year can be achieved, and the comfort of fresh air control can be improved.

For example: if the fresh air temperature is 20°C and the moisture content is 14g/kg, at this time the user sets reheating and dehumidification, the set temperature is 25°C, and the moisture content is 10g/kg, wherein the second fresh air heat exchanger 12 will The fresh air is cooled to 15°C, the fourth heat exchanger cools the fresh air to 10°C, and the first fresh air heat exchanger 11 heats the fresh air to 12°C (assuming that the first fresh air heat exchanger 11 and the outdoor The area ratio of the heat exchanger 33 is 5%, and the subcooled liquid refrigerant is used for reheating to increase supercooling), and the third fresh air heat exchanger 13 heats the fresh air to 28°C (the third fresh air heat exchanger 13 Assuming that the area ratio with the exhaust air heat exchanger 21 is 100%, the temperature of the outlet air is adjusted by reheating the two-phase refrigerant, and the reheat is increased by reducing the speed of the exhaust fan 22 or increasing the speed of the first compressor 31 ), to meet the indoor demand for dehumidification and reheating.

Another example: if the fresh air temperature is 35°C and the moisture content is 21g/kg, the user sets reheating and dehumidification at this time, the set temperature is 25°C, and the moisture content is 10g/kg, wherein the second fresh air heat exchanger 12 The fresh air is cooled to 20° C., the fourth fresh air heat exchanger 14 cools the fresh air to 10° C., and the first fresh air heat exchanger 11 heats the fresh air to 15° C. The area ratio of the heat exchanger 33 is 5%, utilizes the supercooled liquid refrigerant to reheat, and increases supercooling), and the third fresh air heat exchanger 13 heats the fresh air to 22°C (the third fresh air heat exchanger 13 Set the area ratio to the exhaust air heat exchanger 21 as 100%, use the two-phase refrigerant to reheat to adjust the outlet air temperature, and reduce the reheat by increasing the speed of the exhaust fan 22 or reducing the speed of the first compressor 31) , to meet the indoor demand for dehumidification and reheating.

Further, please refer to Fig. 5 and Fig. 6, in order to improve the integration of the fresh air equipment 100 and reduce the volume, the fresh air equipment 100 includes an integrated compressor 5, and two compartments are formed in the integrated compressor 5 Each of the compression parts includes a compression cavity, and an air return port and an exhaust port communicating with the compression cavity. Airflow can be sucked in from the corresponding return air port in the two compression cavities, and compressed After that, it is discharged from the corresponding exhaust port; the two compression parts are respectively located on the refrigerant flow path of the first heat exchange system 3 and the refrigerant flow path of the second heat exchange system 4 .

Further, in order to improve the air intake efficiency of the fresh air passage 1, the fresh air passage 1 is provided with a fresh air inlet 1a and a fresh air outlet 1b; the fresh air equipment 100 also includes a fresh air fan 15, and the fresh air fan 15 is arranged on In the fresh air channel 1 and adjacent to the fresh air outlet 1b. The fresh air flow to the room is increased by the fresh air blower 15 .

In order to improve user comfort, the fresh air inlet 1a is provided with a fresh air filter. The purpose of cleaning the air is achieved through the filter, and the quality of the fresh air flowing into the room is improved, so that users can obtain better experience. Specifically, in one embodiment, the filter is made of activated carbon.

Similarly, in order to improve the exhaust efficiency of the exhaust channel 2, the exhaust channel 2 is provided with an exhaust inlet 2a and an exhaust outlet 2b; the fresh air equipment 100 also includes an exhaust fan 22, the exhaust The blower 22 is arranged in the exhaust channel 2 and adjacent to the exhaust outlet 2b. The exhaust fan 22 increases the return air flow rate entering from the exhaust inlet, thereby improving the exhaust efficiency.

In the first embodiment, please refer to FIG. 3 , based on the first heat exchange system 3 and the second heat exchange system 4 respectively having two fresh air heat exchangers, each part of the fresh air equipment 100 The working state is as follows: the fresh air fan draws fresh air from the outdoor environment, and the fresh air passes through the second fresh air heat exchanger, the fourth fresh air heat exchanger and the first fresh air heat exchanger for four times of heat exchange, and then Transport to the indoor environment. The exhaust fan extracts exhaust air from the indoor environment, and the exhaust air passes through the exhaust air heat exchanger for a heat exchange and then is transported to the outside. The fresh air device may have a cooling mode, a heating mode, and a reheating and dehumidifying mode.

In this way, when the fresh air equipment 100 is in the cooling mode: the first heat exchange system 3 has a high outdoor heat dissipation condensation temperature, and the second heat exchange system 4 has a low exhaust heat dissipation condensation temperature. 3 and reduce the evaporation temperature of the second heat exchange system 4 to form two low-pressure ratio refrigerant cycles to achieve high-efficiency refrigeration operation.

It should be noted that the pressure ratio refers to the ratio of the high and low pressures of the (refrigeration) heat pump cycle, which can be obtained through the conversion of the high and low pressure pressure sensors, or the temperature detection of the condenser and the evaporator.

Specifically, in the first heat exchange system 3, the refrigerant in the first compressor 31 enters the outdoor heat exchanger 33 through the first four-way valve 32 to condense and dissipate heat, and then passes through the first After the throttling element 34 throttles and lowers the pressure, it enters the first fresh air heat exchanger 11 to evaporate and absorb heat, and then enters the second throttling element 35. At this time, the second throttling element 35 does not throttling, and the refrigerant Continue to enter the second fresh air heat exchanger 12 to evaporate and absorb heat, and finally enter the first compressor 31 through the first four-way valve 32 to complete the refrigeration cycle;

In the second heat exchange system 4, the refrigerant in the second compressor 41 enters the exhaust air heat exchanger 21 through the second four-way valve 42 to condense and dissipate heat and recover the exhaust air heat, and then passes through the After the third throttling element 43 throttling and lowering the pressure, it enters the third fresh air heat exchanger 13 to evaporate and absorb heat, and enters the fourth throttling element 44. At this time, the fourth throttling element 44 is not throttling. The refrigerant continues to enter the fourth fresh air heat exchanger 14, and finally enters the second compressor 41 through the second four-way valve 42 to complete the refrigeration cycle.

In the dehumidification and reheating mode: the first heat exchange system 3 has a high outdoor heat dissipation condensation temperature, and the second heat exchange system 4 has a low heat dissipation condensation temperature. By increasing the evaporation temperature of the first heat exchange system 3 and reducing the The evaporation temperature of the second heat exchange system 4 forms two low-pressure ratio refrigerant cycles, and the reheating of the first heat exchange system 3 and the second heat exchange system 4 increases the supercooling of the fresh air equipment 100 to achieve efficient dehumidification and reheating operation.

Specifically, in the first heat exchange system 3, the refrigerant in the first compressor 31 enters the outdoor heat exchanger 33 through the first four-way valve 32 to condense and dissipate heat, and then passes through the first Throttling element 34, at this time, the first throttling element 34 does not throttle, the refrigerant continues to enter the first fresh air heat exchanger 11 to condense and dissipate heat, and then throttling and reducing pressure through the second throttling element 35, Enter the second fresh air heat exchanger 12 to evaporate and absorb heat, and finally enter the first compressor 31 through the first four-way valve 32 to complete the refrigeration cycle;

In the second heat exchange system 4, the refrigerant in the second compressor 41 enters the exhaust air heat exchanger 21 through the second four-way valve 42 to condense and dissipate heat and recover the exhaust air heat, and then enters the The third throttle valve, at this time, the third throttle valve does not throttle, the refrigerant continues to enter the third fresh air heat exchanger 13 to condense and dissipate heat, and then throttling and reducing pressure through the fourth throttle valve, and then Enter the fourth fresh air heat exchanger 14 to evaporate and absorb heat, and finally enter the second compressor 41 through the second four-way valve 42 to complete the refrigeration cycle.

In the heating mode, the outdoor heat absorption evaporation temperature of the first heat exchange system 3 is low, and the exhaust heat absorption evaporation temperature of the second heat exchange system 4 is high. By reducing the condensation temperature of the first heat exchange system 3 and The condensing temperature of the second heat exchange system 4 is increased to form two low-pressure ratio refrigerant cycles to realize high-efficiency heating operation.

Specifically, in the first heat exchange system 3, the refrigerant in the first compressor 31 enters the second fresh air heat exchanger 12 through the first four-way valve 32 to condense and dissipate heat, and then passes through the The second throttling element 35, at this time, the second throttling element 35 is not throttling, the refrigerant continues to enter the first fresh air heat exchanger 11 to condense and dissipate heat, and then throttling and reducing pressure through the first throttling element 34 Then, enter the outdoor heat exchanger 33 to evaporate and absorb heat, and finally enter the first compressor 31 through the first four-way valve 32 to complete the refrigeration cycle;

In the second heat exchange system 4, the refrigerant in the second compressor 41 enters the fourth fresh air heat exchanger 14 through the second four-way valve 42 to condense and dissipate heat, and then enters the fourth section Flow element 44, at this time, the fourth throttling element 44 throttles, and the refrigerant continues to enter the third fresh air heat exchanger 13 to condense and dissipate heat, and then throttling and reducing pressure through the third throttling element 43, then enters The exhaust air heat exchanger 21 evaporates and absorbs heat and recovers the exhaust air heat, and finally enters the second compressor 41 through the second four-way valve 42 to complete the refrigeration cycle.

It can be understood that controlling the first fresh air heat exchanger 11 and the second fresh air heat exchanger 12 of the first heat exchange system 3 and the third fresh air heat exchanger 13 and the fourth fresh air heat exchanger 13 in the second heat exchange system 4 The heat exchangers 14 all operate as evaporators to absorb the heat in the fresh air, thereby cooling the fresh air, which can greatly increase the area of the evaporator contacted by the fresh air, and improve the energy efficiency when cooling the fresh air, thereby improving the energy efficiency state of the fresh air device 100 .

In a specific implementation, the first throttling element 34 of the first heat exchange system 3 can be controlled to work, throttling and reducing pressure, and the second throttling element 35 can be controlled to stop working or open a bypass, so that the first fresh air heat exchanger 11 And the second fresh air heat exchanger 12 operates as an evaporator to cool the fresh air, increase the area of the evaporator of the first heat exchange system 3, and increase the evaporation temperature of the first heat exchange system 3, thereby increasing the temperature of the first heat exchange system 3 energy efficiency.

The third throttling element 43 in the second heat exchange system 4 can be controlled to work, throttling and reducing pressure, and the fourth throttling element 44 can be controlled to stop working or open the bypass, so that the third fresh air heat exchanger 13 and the fourth fresh air exchanger The heat exchangers 14 all operate as evaporators to cool the fresh air, increase the area of the evaporator of the second heat exchange system 4 , increase the evaporation temperature of the second heat exchange system 4 , and thereby improve the energy efficiency of the second heat exchange system 4 . It is also possible to control the opening of the third throttling element 43 and the fourth throttling element 44 to perform throttling and pressure reduction, but keep the opening of the third throttling element 43 greater than the opening of the fourth throttling element 44, thereby increasing the The evaporation temperature of the second heat exchange system 4 , thereby improving the energy efficiency of the second heat exchange system 4 .

It should be noted that, in order to ensure the needs of different outlet air temperatures and energy saving, the area of the heat exchanger needs to be limited, wherein the area of the first fresh air heat exchanger 11 should be less than or equal to 50% of the area of the outdoor heat exchanger 33 %, the area of the third fresh air heat exchanger 13 should be less than or equal to 150% of the area of the exhaust air heat exchanger 21. The fresh air equipment can also include more or fewer components than shown in the figure, or combine certain components to obtain different component arrangements, for example: setting more heat exchange systems in the fresh air equipment or increasing the heat exchange in each heat exchange system number of devices.

In this embodiment, the fresh air equipment control method includes the following steps:

Step S10: Obtain the target operating mode.

It should be noted that the execution subject of this embodiment is the fresh air equipment mentioned above, and the fresh air equipment may include a fresh air fan and an air conditioner with a fresh air function. Usually, the operation of each component in the fresh air equipment can be driven by a core controller, so the execution subject of this embodiment can also be the core controller in the above-mentioned fresh air equipment, and the core controller can be the above-mentioned processor. The method describes the core controller as the execution subject.

It should be noted that the mode setting command can be an instruction sent to the core controller of the fresh air device when the user controls the fresh air device to change the operating mode through a remote control or other means, or it can be when the fresh air device judges that the mode needs to be changed according to the surrounding environment information. Commands that are automatically generated and sent to the core controller.

It can be understood that the mode setting instruction may have a mode identification parameter, and the mode setting instruction may be analyzed to obtain the mode identification parameter in the mode setting instruction, and the target operation mode may be determined according to the mode identification parameter.

Step S20: Adjust the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency.

It should be noted that, compared with conventional fresh air equipment, the fresh air equipment involved in this embodiment has a first heat exchange system and a second heat exchange system. Select different control methods according to the target operation mode to adjust the operating parameters of the first heat exchange system and the second heat exchange system, and adjust the operating status of each component in the first heat exchange system and the second heat exchange system, thereby improving the energy efficiency state, Make fresh air equipment run in a state of high energy efficiency.

The fresh air equipment in this embodiment includes a first heat exchange system and a second heat exchange system. When receiving a mode setting instruction, the target operation mode is determined according to the mode setting instruction, and the first heat exchange system and the second heat exchange system in the fresh air equipment are adjusted according to the target operation mode. Second, the operating parameters of the heat exchange system improve the energy efficiency status of the fresh air equipment. Since multiple heat exchange systems are installed in the fresh air equipment, the operation mode combination of the first heat exchange system and the second heat exchange system can be adjusted according to the target operation mode to meet the requirements of the outlet air temperature in different seasons throughout the year, and it can also be adjusted according to the target operation mode. The target operation mode adjusts the operating status of the first heat exchange system and the second heat exchange system, so that the fresh air equipment is in a state of high energy efficiency, so that the fresh air equipment can meet the heating and temperature adjustment requirements while ensuring efficiency.

Referring to FIG. 7 , FIG. 7 is a schematic flowchart of a second embodiment of a fresh air equipment control method of the present application.

Based on the first embodiment above, the step S20 of the fresh air equipment control method in this embodiment may include:

Step S201: When the target operation mode is the cooling mode, adjust the operation modes of the first heat exchange system and the second heat exchange system to the cooling mode.

It should be noted that, if the target operation mode is the cooling mode, it means that the fresh air taken in by the fresh air device needs to be cooled. At this time, the first heat exchange system and the second heat exchange system can be adjusted to operate in the cooling mode.

It can be understood that, in order to ensure the normal flow of air during the normal operation of the heat exchange system and improve the heat exchange efficiency, before adjusting the operation modes of the first heat exchange system and the second heat exchange system, it is also possible to detect Whether the second blower fan and the third blower fan are turned on and running, and when the second blower blower and/or the third blower blower are not turned on, start the second blower blower and/or the third blower blower.

In actual use, the operation mode of the first heat exchange system can be changed to cooling mode by adjusting the first four-way valve in the first heat exchange system, for example: take Figure 3 as an example, by adjusting the first The state of the four-way valve 32 changes the refrigerant circulation flow direction in the first heat exchange system, so that the refrigerant circulation flow direction in the first heat exchange system becomes: first compressor 31-first four-way valve 32-outdoor heat exchanger 33-the first throttling element 34-the first fresh air heat exchanger 11-the second throttling element 35-the second fresh air heat exchanger 12-the first four-way valve 32-the first compressor 31, so that the first exchanging The thermal system operates in cooling mode.

In actual use, the second four-way valve in the second heat exchange system can be adjusted to change the operation mode of the second heat exchange system to cooling mode, for example: take Figure 3 as an example, by adjusting the second The state of the four-way valve 42 changes the circulation flow direction of the refrigerant in the second heat exchange system, so that the circulation flow direction of the refrigerant in the second heat exchange system becomes: second compressor 41-second four-way valve 42-exhaust air heat exchange Device 21-third throttling element 43-third fresh air heat exchanger 13-fourth throttling element 44-fourth fresh air heat exchanger 14-second four-way valve 42-second compressor 41, so that the second The heat exchange system operates in cooling mode.

Step S202: Control the first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger to operate as evaporators, so that the fresh air equipment in a state of high energy efficiency.

It can be understood that the first fresh air heat exchanger and the second fresh air heat exchanger controlling the first heat exchange system and the third fresh air heat exchanger and the fourth heat exchanger in the second heat exchange system are both operated as evaporators , Absorb the heat in the fresh air, thereby cooling the fresh air, can greatly increase the area of the evaporator that the fresh air contacts, and improve the energy efficiency when cooling the fresh air, thereby improving the energy efficiency of the fresh air equipment.

In one embodiment, the first throttling element of the first heat exchange system can be controlled to work to throttle and reduce pressure, and the second throttling component can be controlled to stop working or open the bypass, so that the first fresh air heat exchanger and the second fresh air The heat exchanger operates as an evaporator to cool the fresh air, increase the area of the evaporator of the first heat exchange system, increase the evaporation temperature of the first heat exchange system, and thereby improve the energy efficiency of the first heat exchange system.

In one embodiment, the third throttling element in the second heat exchange system can be controlled to work, throttling and reducing pressure, and the fourth throttling element can be controlled to stop working or open the bypass, so that the third fresh air heat exchanger and the fourth The fresh air heat exchangers all operate as evaporators to cool the fresh air, increase the area of the evaporator of the second heat exchange system, and increase the evaporation temperature of the second heat exchange system, thereby improving the energy efficiency of the second heat exchange system. It is also possible to control the opening of the third throttling element and the fourth throttling element to perform throttling and pressure reduction, but keep the opening of the third throttling element greater than the opening degree of the fourth throttling element, thereby improving the heat transfer rate of the second heat exchange system. evaporating temperature, thereby improving the energy efficiency of the second heat exchange system.

In actual use, in order to ensure the comfort of users using fresh air equipment and improve user experience, after step S202 described in this embodiment, the first operating temperature parameter and the first target temperature parameter can also be obtained; according to the first operating temperature parameter and the first target temperature parameter to judge whether the cooling capacity is too high, and adjust the operating parameters of the fresh air equipment according to the judgment result.

It should be noted that the first operating temperature parameter may be any one or more of indoor temperature, outlet air temperature, or fresh air temperature, wherein the indoor temperature may be the temperature in the room served by the fresh air device, and the outlet air temperature may be the fresh air temperature. The temperature of the air supplied by the device when the device is supplying air to the room, and the fresh air temperature may be the temperature of the fresh air inhaled by the fresh air device.

In actual use, if the first operating temperature parameter is greater than the first target temperature parameter, the judgment result is that the cooling capacity is too low; if the first operating temperature parameter is smaller than the first target temperature parameter, the judgment result is that the cooling capacity is too high. Wherein, the first target temperature parameter may be set by a user, or may be preset by a manager of the fresh air equipment, and the first target temperature parameter corresponds to a cooling mode, which is not limited in this embodiment.

It is understandable that if the cooling capacity is too high, the operating parameters of the fresh air equipment need to be adjusted to reduce the cooling capacity of the fresh air equipment; if the cooling capacity is too low, the operating parameters of the fresh air equipment need to be adjusted to increase the cooling capacity of the fresh air equipment, thereby Ensure that the indoor temperature meets the actual needs of users and improve user comfort.

In an embodiment, if the cooling capacity is too high, that is, the first operating temperature parameter is lower than the first target temperature parameter, it is necessary to reduce the cooling capacity of the fresh air equipment. Therefore, the first heat exchange system or the second heat exchange system can be reduced. In the process of increasing the speed of the compressor, increasing the opening degree of the first throttling component in the first heat exchange system, increasing the opening degree of the second throttling component in the second heat exchange system, or reducing the speed of the second fan in the fresh air equipment At least one of them, so as to reduce the cooling capacity of the fresh air equipment, wherein the priority of adjusting the first heat exchange system is higher than that of the second heat exchange system.

In an embodiment, if the cooling capacity is too low, that is, the first operating temperature parameter is greater than or equal to the first target temperature parameter, it is necessary to increase the cooling capacity of the fresh air equipment. The compressor speed of the thermal system, reducing the opening degree of the first throttling component in the first heat exchange system, reducing the opening degree of the third throttling component in the second heat exchanging system, increasing the third throttling component in the second heat exchanging system At least one of the speed of the fan or the speed of the first fan in the first heat exchange system is increased to increase the cooling capacity of the fresh air equipment, wherein the priority of adjusting the second heat exchange system is higher than that of the first heat exchange system.

The value range of the first target temperature parameter can be determined according to the first operating temperature parameter, for example: if the first operating temperature parameter is indoor temperature, the value range of the first target temperature parameter can be 15-32°C; if the first If the operating temperature parameter is the fresh air temperature, the value range of the first target temperature parameter can be 10-50°C; if the first operating temperature parameter is the outlet air temperature, the value range of the first target temperature parameter can be 5-32°C ℃.

In this embodiment, when the target operating mode is determined to be cooling mode, the operating parameters of the components in the first heat exchange system and the second heat exchange system are adjusted, so that the first heat exchange system and the second heat exchange system The fresh air heat exchangers all operate as evaporators to cool down the fresh air, thereby increasing the area of the evaporator in the fresh air equipment, improving the energy efficiency of the fresh air equipment in cooling mode, and improving the energy efficiency of fresh air equipment in cooling mode state.

Referring to FIG. 8 , FIG. 8 is a schematic flowchart of a third embodiment of a fresh air equipment control method of the present application.

Based on the first embodiment above, the step S20 of the fresh air equipment control method in this embodiment may include:

Step S201': When the target operation mode is a dehumidification mode or a reheat dehumidification mode, adjust the operation modes of the first heat exchange system and the second heat exchange system to a cooling mode.

It should be noted that if the target operation mode is dehumidification mode or reheating dehumidification mode, it means that the fresh air taken in by the fresh air equipment needs to be cooled and dehumidified first, and then heated. At this time, the first heat exchange system and the second The heat exchange system is adjusted to operate in cooling mode. Similarly, before adjusting the operating modes of the first heat exchange system and the second heat exchange system, it is also possible to detect whether the second fan and the third fan are turned on, and when the second fan and/or the third fan are not turned on, start A second fan and/or a third fan.

In actual use, the operation mode of the first heat exchange system can be changed to cooling mode by adjusting the first four-way valve in the first heat exchange system, for example: take Figure 3 as an example, by adjusting the first The state of the four-way valve 32 changes the refrigerant circulation flow direction in the first heat exchange system, so that the refrigerant circulation flow direction in the first heat exchange system becomes: first compressor 31-first four-way valve 32-outdoor heat exchanger 33-the first throttling element 34-the first fresh air heat exchanger 11-the second throttling element 35-the second fresh air heat exchanger 12-the first four-way valve 32-the first compressor 31, so that the first exchanging The thermal system operates in cooling mode.

In actual use, the second four-way valve in the second heat exchange system can be adjusted to change the operation mode of the second heat exchange system to cooling mode, for example: take Figure 3 as an example, by adjusting the second The state of the four-way valve 42 changes the circulation flow direction of the refrigerant in the second heat exchange system, so that the circulation flow direction of the refrigerant in the second heat exchange system becomes: second compressor 41-second four-way valve 42-exhaust air heat exchange Device 21-third throttling element 43-third fresh air heat exchanger 13-fourth throttling element 44-fourth fresh air heat exchanger 14-second four-way valve 42-second compressor 41, so that the second The heat exchange system operates in cooling mode.

Step S202': Control the first fresh air heat exchanger to operate as a condenser, and the second fresh air heat exchanger to operate as an evaporator.

In one embodiment, the first throttling element in the first heat exchange system can be controlled to stop working or open the bypass, and the second throttling element can be controlled to work to throttling and reducing pressure, so that the first fresh air heat exchanger acts as a condensing The second fresh air heat exchanger operates as an evaporator to cool and dehumidify the fresh air, thereby reducing the condensation temperature and increasing the subcooling degree, thereby improving the energy efficiency of the first heat exchange system.

Step S203': Control the third fresh air heat exchanger to operate as a condenser, and the fourth fresh air heat exchanger to operate as an evaporator, so that the fresh air equipment is in a state of high energy efficiency.

In one embodiment, the third throttling element in the second heat exchange system can be controlled to stop working or open the bypass, and the fourth throttling element can be controlled to work to throttling and reducing pressure, so that the third fresh air heat exchanger can be used as a condenser The fresh air is reheated, and the fourth fresh air heat exchanger operates as an evaporator to cool and dehumidify the fresh air, reduce the condensation temperature, and increase the degree of supercooling, thereby improving the energy efficiency of the second heat exchange system and making the fresh air equipment in a state of high energy efficiency.

In actual use, in order to ensure the comfort of users using fresh air equipment and improve user experience, after step S203' described in this embodiment, the operating humidity parameter, target humidity parameter, second operating temperature parameter and second target Temperature parameter: adjust the operating state of the fresh air equipment according to the operating humidity parameter, the target humidity parameter, the second operating temperature parameter and the second target temperature parameter.

It should be noted that the second operating temperature parameter may be any one or more of indoor temperature, outlet air temperature, or fresh air temperature. The operating humidity parameter can be the indoor humidity, the humidity of the outlet air or the humidity of the fresh air. The indoor humidity can be the humidity of the room served by the fresh air device, and the humidity of the outlet air can be the air sent to the room by the fresh air device. The moisture content of the air that is supplied at the time, the moisture content of the fresh air may be the moisture content of the fresh air inhaled by the fresh air equipment.

In actual use, you can first compare the operating humidity parameters with the target humidity parameters, judge whether it is necessary to adjust the operating parameters of the fresh air equipment according to the humidity comparison results, and judge whether it is necessary to compare the second temperature operating parameters with the second target humidity parameters according to the humidity comparison results. The temperature parameters are compared, and then it is determined whether it is necessary to continue to adjust the operating parameters of the fresh air equipment according to the temperature comparison result. Wherein, the second target temperature parameter and the target humidity parameter correspond to the reheating and dehumidification mode, which can be set by the user, or can be set in advance by the management personnel of the fresh air equipment.

For example: compare the operating humidity parameter with the target humidity parameter, and when the operating humidity parameter is greater than the target humidity parameter, increase the compressor speed in the first heat exchange system or the second heat exchange reminder, and reduce the compressor speed in the first heat exchange system At least one of the opening degree of the second throttling element or the opening degree of the fourth throttling element in the second heat exchange system is reduced, and at this time, it is not necessary to compare the second temperature operating parameter with the second target temperature parameter; When the operating humidity parameter is less than the target humidity parameter, reduce the compressor speed of the first heat exchange system or the second heat exchange system, increase the opening degree of the second throttling element in the first heat exchange system, or increase the second heat exchange system. At least one of the opening degrees of the fourth throttling element in the thermal system, and at this time, the second temperature operating parameter can be compared with the second target temperature parameter, and when the second temperature operating parameter is greater than the second target temperature parameter, it can be At least one of increasing the speed of the third fan in the fresh air equipment, reducing the speed of the compressor in the second heat exchange system, or increasing the opening of the fourth throttling element in the second heat exchange system is performed, and the second temperature operating parameter is less than When the second target temperature parameter is used, at least one of reducing the speed of the third fan in the fresh air equipment, increasing the speed of the compressor in the second heat exchange system, or reducing the opening degree of the fourth throttling element in the second heat exchange system can be performed. one.

The value range of the second target temperature parameter can be determined according to the second operating temperature parameter, for example: if the second operating temperature parameter is indoor temperature, the value range of the second target temperature parameter can be 15-32°C; if the second 2. If the operating temperature parameter is the fresh air temperature, the value range of the second target temperature parameter can be 10-50°C; if the second operating temperature parameter is the outlet air temperature, the value range of the second target temperature parameter can be 5-50°C. 32°C. The value range of the target humidity parameter can be determined according to the operating humidity parameter, for example: if the operating humidity parameter is indoor humidity, the value range of the target humidity parameter can be 5-14g/kg; Humidity, the value range of the target humidity parameter can be 5-16g/kg; if the operating humidity parameter is fresh air moisture content, the value range of the target humidity parameter can be 5-18g/kg.

In this embodiment, when the target operating mode is determined to be the dehumidification and reheating mode, the operating parameters of the components in the first heat exchange system and the second heat exchange system are adjusted so that the first fresh air heat exchanger in the first heat exchange system Operate as a condenser to preheat the fresh air, the second fresh air heat exchanger operates as an evaporator to cool and dehumidify the fresh air, and the third fresh air heat exchanger in the second heat exchange system operates as a condenser to reheat the fresh air , the fourth fresh air heat exchanger operates as an evaporator to cool and dehumidify the fresh air, thereby realizing the dehumidification and reheating of the fresh air and meeting the indoor demand for dehumidification and reheating.

Referring to FIG. 9 , FIG. 9 is a schematic flowchart of a fourth embodiment of a fresh air equipment control method of the present application.

Based on the first embodiment above, the step S20 of the fresh air equipment control method in this embodiment may include:

Step S201": When the target operation mode is the heating mode, adjust the operation modes of the first heat exchange system and the second heat exchange system to the heating mode.

It should be noted that if the target operating mode is the heating mode, it means that the fresh air taken in by the fresh air device needs to be heated. At this time, the first heat exchange system and the second heat exchange system can be adjusted to operate in the heating mode .

It can be understood that, in order to ensure the normal flow of air during the normal operation of the heat exchange system and improve the heat exchange efficiency, before adjusting the operation modes of the first heat exchange system and the second heat exchange system, it is also possible to detect Whether the second blower fan and the third blower fan are turned on and running, and when the second blower blower and/or the third blower blower are not turned on, start the second blower blower and/or the third blower blower.

In actual use, the operation mode of the first heat exchange system can be changed to the heating mode by adjusting the first four-way valve in the first heat exchange system, for example: taking Figure 3 as an example, by adjusting the first four-way valve The state of the four-way valve 32 changes the refrigerant circulation flow direction in the first heat exchange system, so that the refrigerant circulation flow direction in the first heat exchange system becomes: first compressor 31-first four-way valve 32-second fresh air Heat exchanger 12-second throttling element 35-first fresh air heat exchanger 11-first throttling element 34-outdoor heat exchanger 33-first four-way valve 32-first compressor 31, so that the first The heat exchange system operates in heating mode.

In actual use, the operation mode of the second heat exchange system can be changed to the heating mode by adjusting the second four-way valve in the second heat exchange system, for example: taking Figure 3 as an example, by adjusting the second The state of the second four-way valve 42 changes the refrigerant circulation flow direction in the second heat exchange system, so that the refrigerant circulation flow direction in the second heat exchange system becomes: second compressor 41-second four-way valve 42-fourth fresh air Heat exchanger 14-fourth throttling element 44-third fresh air heat exchanger 13-third throttling element 43-exhaust air heat exchanger 21-second four-way valve 42-second compressor 41, so that the first The second heat exchange system operates in heating mode.

Step S202": Control the first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger to operate as condensers, so that the fresh air The device is in a state of high energy efficiency.

It can be understood that the first fresh air heat exchanger and the second fresh air heat exchanger controlling the first heat exchange system and the third fresh air heat exchanger and the fourth heat exchanger in the second heat exchange system are both operated as condensers , heating the fresh air can greatly increase the area of the condenser that the fresh air contacts, and improve the energy efficiency when heating the fresh air, thereby improving the energy efficiency of the fresh air equipment.

In one embodiment, the first throttling element in the first heat exchange system can be controlled to work, throttling and reducing pressure, and the second throttling element can be controlled to stop working or open the bypass, so that the first fresh air heat exchanger and the second The two fresh air heat exchangers both operate as condensers to heat the fresh air, increase the condenser area of the second heat exchange system, reduce the condensation temperature, and increase the degree of subcooling, thereby improving the energy efficiency of the first heat exchange system.

In one embodiment, the third throttling component in the second heat exchange system can be controlled to work, throttling and reducing pressure, and the second throttling element is controlled to stop working or open the bypass, so that the third fresh air heat exchanger and the second The four fresh air heat exchangers all operate as condensers to heat the fresh air, increase the condenser area of the second heat exchange system, reduce the condensation temperature, and increase the subcooling temperature, thereby improving the energy efficiency of the second heat exchange system.

In actual use, in order to ensure the comfort of users using fresh air equipment and improve user experience, after step S202" described in this embodiment, the third operating temperature parameter and the third target temperature parameter can also be obtained; according to the third operating temperature parameter and the third target temperature parameter to judge whether the heating capacity is too high, and adjust the operating state of the fresh air equipment according to the judgment result.

It should be noted that the third operating temperature parameter may be any one or more of indoor temperature, outlet air temperature, or fresh air temperature. Wherein, the indoor temperature may be the temperature in the room served by the fresh air device, the outlet air temperature may be the temperature of the air supplied by the fresh air device when it supplies air to the room, and the fresh air temperature may be the temperature of the fresh air inhaled by the fresh air device.

In actual use, it is possible to compare the third operating temperature parameter with the third target temperature parameter, and determine whether the heating capacity is too high according to the comparison result, for example: if the third operating temperature parameter is lower than the target temperature parameter, the judgment result is the heating capacity too low; if the third operating temperature parameter is greater than the target temperature parameter, the judgment result is that the heating capacity is too high. Wherein, the target temperature parameter may be set by the user, or may be preset by the manager of the fresh air equipment, and the target temperature parameter corresponds to the cooling mode, which is not limited in this embodiment.

It is understandable that if the heating capacity is too high, it is necessary to adjust the operating parameters of the fresh air equipment to reduce the heating capacity of the fresh air equipment; if the heating capacity is too low, it is necessary to adjust the operating parameters of the fresh air equipment to increase the heating capacity of the fresh air equipment, thereby Ensure that the indoor temperature meets the actual needs of users and improve user comfort.

In one embodiment, if the heating capacity is too high, that is, the third operating temperature parameter is greater than the third target temperature parameter, it is necessary to reduce the heating capacity of the fresh air equipment. Therefore, the first heat exchange system or the second heat exchange system can be reduced. increase the speed of the middle compressor, increase the opening degree of the first throttling element in the first heat exchange system, increase the opening degree of the second throttling element in the second heat exchange system, reduce the speed of the third fan in the fresh air equipment, or Decreasing at least one of the rotational speeds of the first fan in the first heat exchange system, wherein the adjustment priority of the first heat exchange system is higher than that of the second heat exchange system.

In one embodiment, if the heating capacity is too low, that is, the third operating temperature parameter is less than or equal to the third target temperature parameter, it is necessary to increase the heating capacity of the fresh air equipment. The speed of the compressor in the thermal system, reducing the opening of the first throttling element in the first heat exchange system, reducing the opening of the second throttling element in the second heat exchanging system, increasing the opening of the third fan in the fresh air equipment At least one of rotating speed or increasing the speed of the first fan in the first heat exchange system, wherein the adjustment priority of the second heat exchange system is higher than that of the first heat exchange system.

The value range of the third target temperature parameter can be determined according to the third operating temperature parameter, for example: if the third temperature parameter is indoor temperature, the value range of the third target temperature parameter can be 12-32°C; if the third If the operating temperature parameter is the fresh air temperature, the value range of the third target temperature parameter can be -30-25°C; if the third operating temperature parameter is the outlet air temperature, the value range of the third target temperature parameter can be 15- 60°C.

In this embodiment, when the target operation mode is determined to be the heating mode, the operation parameters of the components in the first heat exchange system and the second heat exchange system are adjusted, so that the first heat exchange system and the second heat exchange system All the fresh air heat exchangers work as condensers to heat the fresh air, thereby increasing the area of the condenser in the fresh air equipment, improving the operating energy efficiency of the fresh air equipment in the heating mode, and improving the operating efficiency of the fresh air equipment in the heating mode. energy efficiency status.

In addition, the embodiment of the present application also proposes a storage medium, on which a fresh air equipment control program is stored, and when the fresh air equipment control program is executed by a processor, the steps of the fresh air equipment control method as described above are implemented.

Referring to FIG. 10 , FIG. 10 is a structural block diagram of the first embodiment of the fresh air equipment control device of the present application.

As shown in Figure 10, the fresh air equipment control device proposed in the embodiment of the present application includes:

The command receiving module 100 is configured to acquire a target running mode.

It should be noted that the mode setting command can be an instruction sent to the core controller of the fresh air device when the user controls the fresh air device to change the operating mode through a remote control or other means, or it can be when the fresh air device judges that the mode needs to be changed according to the surrounding environment information. Commands that are automatically generated and sent to the core controller.

It can be understood that the mode setting instruction may have a mode identification parameter, and the mode setting instruction may be analyzed to obtain the mode identification parameter in the mode setting instruction, and the target operation mode may be determined according to the mode identification parameter.

The parameter adjustment module 200 is configured to adjust the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency.

It should be noted that, compared with conventional fresh air equipment, the fresh air equipment involved in this embodiment has a first heat exchange system and a second heat exchange system. Select different control methods according to the target operation mode to adjust the operating parameters of the first heat exchange system and the second heat exchange system, modify the operating status of each component in the first heat exchange system and the second heat exchange system, thereby improving the energy efficiency state, Make fresh air equipment run in a state of high energy efficiency.

The fresh air equipment in this embodiment includes a first heat exchange system and a second heat exchange system. When receiving a mode setting instruction, the target operation mode is determined according to the mode setting instruction, and the first heat exchange system and the second heat exchange system in the fresh air equipment are adjusted according to the target operation mode. Second, the operating parameters of the heat exchange system improve the energy efficiency status of the fresh air equipment. Since multiple heat exchange systems are installed in the fresh air equipment, the operation mode combination of the first heat exchange system and the second heat exchange system can be adjusted according to the target operation mode to meet the requirements of the outlet air temperature in different seasons throughout the year, and it can also be adjusted according to the target operation mode. The target operation mode adjusts the operating status of the first heat exchange system and the second heat exchange system, so that the fresh air equipment is in a state of high energy efficiency, so that the fresh air equipment can meet the heating and temperature adjustment requirements while ensuring efficiency.

It should be understood that the above is only an example, and does not constitute any limitation to the technical solution of the present application. In a specific application, those skilled in the art can make settings according to needs, and the present application does not limit this.

It should be noted that the workflow described above is only illustrative and does not limit the scope of protection of this application. In practical applications, those skilled in the art can select part or all of them to implement according to actual needs. The purpose of the scheme of this embodiment is not limited here.

In addition, for technical details not described in detail in this embodiment, reference may be made to the fresh air equipment control method provided in any embodiment of the present application, which will not be repeated here.

Furthermore, it should be noted that in this document, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, but also other elements not expressly listed, or elements inherent in such a process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

The serial numbers of the above embodiments of the present application are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as a read-only memory (Read Only Memory) , ROM)/RAM, magnetic disk, optical disk), including several instructions to make a terminal device (which can be a mobile phone, computer, server, or network device, etc.) execute the methods described in various embodiments of the present application.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structures or equivalent process transformations made by using the description of the application and the accompanying drawings are directly or indirectly used in other related technical fields. , are all included in the patent protection scope of the present application in the same way.

Claims (22)

1. A fresh air equipment control method, wherein the fresh air equipment control method is applied to fresh air equipment, and the fresh air equipment includes: a first heat exchange system and a second heat exchange system, and the first heat exchange system is used in the fresh air channel Exchanging heat with the outdoor environment, the second heat exchange system is used for exchanging heat between the fresh air channel and the exhaust air channel;

   The fresh air equipment control method includes the following steps:

   get the target mode of operation; and

   The operating states of the first heat exchange system and the second heat exchange system are adjusted according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency.
2. The fresh air equipment control method according to claim 1, wherein the first heat exchange system includes a first fresh air heat exchanger and a second fresh air heat exchanger arranged in the fresh air channel, and the second heat exchange The system includes a third fresh air heat exchanger and a fourth fresh air heat exchanger arranged in the fresh air channel;

   The step of adjusting the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency, includes:

   When the target operation mode is a cooling mode, adjusting the operation modes of the first heat exchange system and the second heat exchange system to a cooling mode; and

   Controlling the first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger to operate as evaporators, so that the fresh air equipment has high energy efficiency state.
3. The fresh air equipment control method according to claim 2, wherein the fresh air equipment further comprises an outdoor heat exchanger installed in the outdoor environment, a second fan installed in the fresh air channel, and the The third fan inside; the first heat exchange system also includes a first compressor, a first four-way valve, a first throttling element, a second throttling element and an outdoor heat exchanger, the first compressor, The first four-way valve, the outdoor heat exchanger, the first throttling element, the first fresh air heat exchanger, the second throttling element, and the second fresh air heat exchanger are sequentially connected in series Set, the second heat exchange system also includes a second compressor, a second four-way valve, a third throttling element, a fourth throttling element, and an exhaust air heat exchanger, the second compressor, the first Two four-way valves, the exhaust air heat exchanger, the third throttling element, the third fresh air heat exchanger, the fourth throttling element, and the fourth fresh air heat exchanger are sequentially arranged in series;

   The first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger and the fourth fresh air heat exchanger are controlled to operate as evaporators, so that the fresh air equipment is in After the steps of Energy Efficient State, also include:

   obtaining a first operating temperature parameter and a first target temperature parameter; and

   When the first operating temperature parameter is lower than the first target temperature parameter, reduce the speed of the first compressor, increase the opening degree of the first throttling element, reduce the speed of the second fan, at least one of reducing the rotational speed of the second compressor and increasing the opening of the third throttling element;

   When the first operating temperature parameter is greater than the first target temperature parameter, increase the rotation speed of the first compressor, decrease the opening degree of the first throttling element, increase the rotation speed of the first fan, At least one of increasing the rotation speed of the third fan, increasing the rotation speed of the second compressor, and reducing the opening degree of the third throttling element.
4. The fresh air equipment control method according to claim 1, wherein the first heat exchange system includes a first fresh air heat exchanger and a second fresh air heat exchanger arranged in the fresh air channel, and the second heat exchange The system includes a third fresh air heat exchanger and a fourth fresh air heat exchanger arranged in the fresh air channel;

   The step of adjusting the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency, includes:

   When the target operation mode is a dehumidification mode or a reheat dehumidification mode, adjusting the operation modes of the first heat exchange system and the second heat exchange system to a cooling mode;

   controlling the first fresh air heat exchanger to operate as a condenser, and the second fresh air heat exchanger to operate as an evaporator; and

   The third fresh air heat exchanger is controlled to operate as a condenser, and the fourth fresh air heat exchanger is operated as an evaporator, so that the fresh air equipment is in a state of high energy efficiency.
5. The fresh air equipment control method according to claim 4, wherein the fresh air equipment further comprises an outdoor heat exchanger installed in the outdoor environment, a second fan installed in the fresh air passage, and the second fan installed in the exhaust air passage. The third fan inside; the first heat exchange system also includes a first compressor, a first four-way valve, a first throttling element, a second throttling element and an outdoor heat exchanger, the first compressor, The first four-way valve, the outdoor heat exchanger, the first throttling element, the first fresh air heat exchanger, the second throttling element, and the second fresh air heat exchanger are sequentially connected in series Set, the second heat exchange system also includes a second compressor, a second four-way valve, a third throttling element, a fourth throttling element, and an exhaust air heat exchanger, the second compressor, the first Two four-way valves, the exhaust air heat exchanger, the third throttling element, the third fresh air heat exchanger, the fourth throttling element, and the fourth fresh air heat exchanger are sequentially arranged in series;

   After the step of controlling the third fresh air heat exchanger to operate as a condenser, and the fourth fresh air heat exchanger to operate as an evaporator, so that the fresh air equipment is in a state of high energy efficiency, it also includes:

   Obtain operating humidity parameters and target humidity parameters;

   When the operating humidity parameter is less than the target humidity parameter, reduce the rotation speed of the first compressor, increase the opening degree of the second throttling element, decrease the rotation speed of the second compressor, increase at least one of the opening degrees of the fourth throttle element;

   When the operating humidity parameter is greater than the target humidity parameter, increase the rotation speed of the first compressor, decrease the opening degree of the second throttling element, increase the rotation speed of the second compressor, decrease the at least one of the opening degrees of the fourth throttle element.
6. The fresh air equipment control method according to claim 5, wherein, when the operating humidity parameter is lower than the target humidity parameter, reducing the speed of the first compressor and increasing the speed of the first throttling element After at least one of the steps of opening, reducing the speed of the second fan, reducing the speed of the second compressor, and increasing the opening of the third throttling element, it further includes:

   Obtaining a second operating temperature parameter and a second target temperature parameter;

   When the second operating temperature parameter is lower than the second target temperature parameter, reduce the speed of the third fan, increase the speed of the second compressor, and reduce the opening degree of the fourth throttling element at least one of

   When the second operating temperature parameter is greater than the second target temperature parameter, at least one of increasing the rotation speed of the third fan, decreasing the rotation speed of the second compressor, and increasing the opening degree of the fourth throttling element.
7. The fresh air equipment control method according to claim 1, wherein the first heat exchange system includes a first fresh air heat exchanger and a second fresh air heat exchanger arranged in the fresh air channel, and the second heat exchange The system includes a third fresh air heat exchanger and a fourth fresh air heat exchanger arranged in the fresh air channel;

   The step of adjusting the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency, includes:

   When the target operation mode is a heating mode, adjusting the operation modes of the first heat exchange system and the second heat exchange system to a heating mode; and

   Controlling the first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger to operate as condensers, so that the fresh air equipment is at high energy efficiency state.
8. The fresh air equipment control method according to claim 7, wherein the fresh air equipment further comprises an outdoor heat exchanger installed in the outdoor environment, a second fan installed in the fresh air channel, and the The third fan inside; the first heat exchange system also includes a first compressor, a first four-way valve, a first throttling element, a second throttling element and an outdoor heat exchanger, the first compressor, The first four-way valve, the outdoor heat exchanger, the first throttling element, the first fresh air heat exchanger, the second throttling element, and the second fresh air heat exchanger are sequentially connected in series Set, the second heat exchange system also includes a second compressor, a second four-way valve, a third throttling element, a fourth throttling element, and an exhaust air heat exchanger, the second compressor, the first Two four-way valves, the exhaust air heat exchanger, the third throttling element, the third fresh air heat exchanger, the fourth throttling element, and the fourth fresh air heat exchanger are sequentially arranged in series;

   The first fresh air heat exchanger, the second fresh air heat exchanger, the third fresh air heat exchanger, and the fourth fresh air heat exchanger are controlled to operate as condensers to improve the condensation of the fresh air equipment. After the step of improving the energy efficiency status of the fresh air equipment, the area of the fresh air equipment also includes:

   Obtain a third operating temperature parameter and a third target temperature parameter; and

   When the third operating temperature parameter is less than the third target temperature parameter, increase the rotation speed of the first compressor, decrease the opening degree of the first throttling element, increase the rotation speed of the first fan, at least one of increasing the speed of the third fan, increasing the speed of the second compressor, and reducing the opening of the third throttling element;

   When the third operating temperature parameter is greater than the third target temperature parameter, reduce the speed of the first compressor, increase the opening degree of the first throttling element, reduce the speed of the second fan, At least one of reducing the rotation speed of the second compressor and increasing the opening degree of the third throttling element.
9. A control device for fresh air equipment, wherein the control device for fresh air equipment includes the following modules:

   An instruction receiving module, configured to acquire a target operating mode;

   A parameter adjustment module, configured to adjust the operating states of the first heat exchange system and the second heat exchange system according to the target operating mode, so that the fresh air equipment is in a state of high energy efficiency.
10. A storage medium, wherein a fresh air equipment control program is stored on the storage medium, and when the fresh air equipment control program is executed by a processor, the fresh air equipment control method according to any one of claims 1-8 is implemented.
11. A fresh air equipment, wherein, the fresh air equipment includes: a first heat exchange system and a second heat exchange system, the first heat exchange system is used for exchanging heat between the fresh air channel and the outdoor environment, and the second The heat exchange system is used to exchange heat between the fresh air channel and the exhaust air channel; the fresh air device also includes: a memory, a processor, and a fresh air device stored on the memory and operable on the processor A control program, when the fresh air equipment control program is executed by the processor, the fresh air equipment control method according to any one of claims 1-8 is realized.
12. The fresh air equipment according to claim 11, wherein a plurality of fresh air heat exchangers are arranged in the fresh air channel, at least one of the plurality of fresh air heat exchangers is in the refrigerant flow of the first heat exchange system At least one of them is on the refrigerant flow path of the second heat exchange system.
13. The fresh air equipment according to claim 12, wherein at least two of the fresh air heat exchangers are arranged on the refrigerant flow path of the first heat exchange system; and/or,

    At least two of the fresh air heat exchangers are arranged on the refrigerant flow path of the second heat exchange system.
14. The fresh air equipment according to claim 13, wherein, in the fresh air channel, from the outdoor to the indoor direction, at least two fresh air heat exchangers arranged on the refrigerant flow path of the first heat exchange system are connected to the At least two fresh air heat exchangers on the refrigerant flow path of the second heat exchange system are arranged alternately in sequence.
15. The fresh air equipment according to claim 12, wherein a first refrigerant flow path is formed on the first heat exchange system, and the first heat exchange system includes a series of the first compressor, the first four-way valve, the outdoor heat exchanger and the first throttling element;

    Two fresh air heat exchangers are arranged on the first refrigerant flow path, and a second throttling element is arranged between the two fresh air heat exchangers. The two fresh air heat exchangers include the first fresh air heat exchanger and the second fresh air heat exchanger;

    In the fresh air passage, the first fresh air heat exchanger is located on a side of the second fresh air heat exchanger away from the air inlet of the fresh air passage;

    On the first refrigerant flow path, the first throttling element, the first fresh air heat exchanger, the second throttling element, the second fresh air heat exchanger, and the first four-way valve Connect sequentially.
16. The fresh air equipment according to claim 15, wherein the heat exchange area of the outdoor heat exchanger is S1, the heat exchange area of the first fresh air heat exchanger is S2, and S2/S1≤0.5.
17. The fresh air device according to claim 15, wherein the fresh air device further comprises an outdoor fan, and the outdoor fan is arranged corresponding to the outdoor heat exchanger.
18. The fresh air equipment according to claim 12, wherein a second refrigerant flow path is formed on the second heat exchange system, and the second heat exchange system includes a series of The second compressor, the second four-way valve, the exhaust air heat exchanger and the third throttling element;

    Two fresh air heat exchangers are arranged on the second refrigerant flow path, and a fourth throttling element is arranged between the two fresh air heat exchangers. The two fresh air heat exchangers include a third fresh air heat exchanger. Heat exchanger and the fourth fresh air heat exchanger;

    In the fresh air passage, the third fresh air heat exchanger is located on a side of the fourth fresh air heat exchanger away from the air inlet of the fresh air passage;

    On the second refrigerant flow path, the third throttling element, the third fresh air heat exchanger, the fourth throttling element, the fourth fresh air heat exchanger, and the second four-way valve are sequentially connect.
19. The fresh air equipment according to claim 18, wherein the heat exchange area of the exhaust air heat exchanger is S4, the heat exchange area of the third fresh air heat exchanger is S5, and S5/S4≤1.5.
20. The fresh air equipment according to claim 12, wherein the fresh air equipment includes an integrated compressor, and two separate compression parts are formed in the integrated compressor, and each of the compression parts includes a compression cavity and a communication channel. The air return port and the exhaust port of the above-mentioned compression cavity, the airflow can be sucked from the corresponding said return air port in the two described compression chambers, and after compression, it is discharged from the corresponding said exhaust port;

    The two compression parts are respectively located on the refrigerant flow path of the first heat exchange system and the refrigerant flow path of the second heat exchange system.
21. The fresh air equipment according to claim 12, wherein the fresh air channel is provided with a fresh air inlet and a fresh air outlet;

    The fresh air equipment further includes a fresh air fan, the fresh air fan is arranged in the fresh air channel and adjacent to the fresh air outlet.
22. The fresh air equipment according to claim 12, wherein the exhaust channel is provided with an exhaust inlet and an exhaust outlet;

    The fresh air equipment also includes an exhaust fan, and the exhaust fan is arranged in the exhaust channel and adjacent to the exhaust outlet.

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