A control method, control device, and fresh air conditioner for air conditioning.

Abstract

This invention provides a control method, control device, and fresh air conditioner for a fresh air system. The fresh air conditioner includes a fresh air module and an indoor unit body. The base body forms a base air duct and an inner connecting pipe, and a heat exchange component is disposed within the base air duct. The heat exchange component forms a fresh air heat exchange channel and a stale air heat exchange channel. A fresh air assembly and a stale air assembly are disposed at the bottom of the base body. The indoor unit body forms a return air duct, and an indoor heat exchanger is disposed within the return air duct. The control method includes determining the target heat exchange mode of the fresh air conditioner, determining the target positions of the air inlet baffle and the air outlet baffle, and controlling the air inlet baffle and the air outlet baffle to move to their respective target positions. Thus, when the fresh air conditioner operates in the first heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange channel exchanges heat with the indoor stale air flowing through the stale air heat exchange channel. When the fresh air conditioner operates in the second heat exchange mode, the outdoor fresh air flowing through the return air duct exchanges heat with the indoor heat exchanger, which can meet the fresh air needs of different users.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning equipment technology, and particularly relates to a control method, control device and fresh air conditioner for a fresh air conditioner. Background Technology

[0002] With the continuous development of the air conditioning industry, a new type of fresh air conditioner has been launched on the market, which includes a fresh air unit and an exhaust unit. The fresh air unit can bring fresh outdoor air into the room, and the exhaust unit can exhaust the stale indoor air to the outside, thus completing the function of replacing the air with fresh air. In the existing technology, the structural design of the fresh air unit is unreasonable and the heat exchange mode between the outdoor fresh air and the indoor stale air is singular, resulting in a narrow range of applications for fresh air conditioners, low control accuracy of the heat exchange mode, and inability to meet the fresh air needs of different users. Summary of the Invention

[0003] In view of this, the present invention provides a control method, control device and fresh air conditioner for fresh air conditioning, so as to solve the problems of the single heat exchange mode between outdoor fresh air and indoor stale air in existing fresh air conditioners, the narrow application range of fresh air conditioners and the inability to meet the fresh air needs of different users.

[0004] This invention provides a control method for a fresh air conditioner, the fresh air conditioner including an indoor unit, the indoor unit including a fresh air module and an indoor unit body; the fresh air module including a base body, the base body forming a base air duct and an inner connecting pipe, a heat exchange component being disposed within the base air duct; the heat exchange component forming a fresh air heat exchange channel and a stale air heat exchange channel, both ends of the fresh air heat exchange channel being connected to the base air duct, and one end of the stale air heat exchange channel being connected to the indoor unit; one end of the base air duct and one end of the inner connecting pipe being connected to the outdoor unit; a fresh air assembly and a stale air assembly being disposed at the bottom of the base body; the fresh air assembly forming a fresh air cavity, the fresh air cavity forming a first fresh air cavity inlet, ... The system comprises a second fresh air chamber inlet, a first fresh air chamber outlet, and a second fresh air chamber outlet. The first fresh air chamber inlet is connected to the other end of the base air duct, and the second fresh air chamber inlet is connected to the other end of the inner connecting pipe. The first fresh air chamber outlet is connected to the indoor environment. An air inlet baffle and an air outlet baffle are provided within the fresh air chamber. The air inlet baffle has different positions that allow one of the first and second fresh air chamber inlets to open while the other is closed. The air outlet baffle has different positions that allow one of the first and second fresh air chamber outlets to open while the other is closed. The turbid air assembly forms a turbid air chamber, which connects to the other end of the turbid air heat exchange duct and the outdoors. The indoor unit body is located on one side of the fresh air module and forms a return air duct. An indoor heat exchanger is installed in the return air duct, and the return air duct is connected to the outlet of the second fresh air chamber through an external connecting pipe. The fresh air air conditioner is equipped with a first heat exchange mode that allows outdoor fresh air flowing through the fresh air heat exchange duct to exchange heat with indoor turbid air flowing through the turbid air heat exchange duct, and a second heat exchange mode that allows outdoor fresh air flowing through the return air duct to exchange heat with the indoor heat exchanger. The control method includes: Determine the target heat exchange mode for the fresh air conditioning system; The target positions of the air inlet baffle and the air outlet baffle are determined according to the target heat exchange mode. Control the air inlet baffle and air outlet baffle to move to their respective target positions; Control the operation of the fresh air conditioner to the target heat exchange mode.

[0005] Further optionally, the air inlet baffle has positions A1 and B1. When the air inlet baffle is in position A1, the first fresh air cavity inlet is open and the second fresh air cavity inlet is closed; when the air inlet baffle is in position B1, the first fresh air cavity inlet is closed and the second fresh air cavity inlet is open. The air outlet baffle has positions A2 and B2. When the air outlet baffle is in position A2, the first fresh air cavity outlet is open and the second fresh air cavity outlet is closed; when the air outlet baffle is in position B2, the first fresh air cavity outlet is closed and the second fresh air cavity outlet is open. Determining the target positions of the air inlet baffle and the air outlet baffle according to the target heat exchange mode includes: When the target heat exchange mode is the first heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position A2. When the target heat exchange mode is the second heat exchange mode, the target position of the air inlet baffle is the B1 position, and the target position of the air outlet baffle is the B2 position.

[0006] Optionally, the fresh air conditioner further includes a third heat exchange mode. In this mode, the outdoor fresh air flowing through the fresh air heat exchange duct and the indoor turbid air flowing through the turbid air heat exchange duct complete a first heat exchange, followed by a second heat exchange between the outdoor fresh air flowing through the return air duct and the indoor heat exchanger. Determining the target positions of the inlet baffle and the outlet baffle based on the target heat exchange mode includes: When the target heat exchange mode is the third heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position B2.

[0007] Further optionally, the fresh air module further includes an electric heating element disposed within the fresh air cavity; the fresh air conditioner also has a fourth heat exchange mode, in which the fresh air flowing through the fresh air cavity exchanges heat with the electric heating element when the fresh air conditioner is in the fourth heat exchange mode; determining the target position of the air inlet baffle and the target position of the air outlet baffle according to the target heat exchange mode includes: When the target heat exchange mode is the fourth heat exchange mode, the target position of the air inlet baffle is the B1 position, and the target position of the air outlet baffle is the A2 position.

[0008] Optionally, the fresh air conditioner also includes a fifth heat exchange mode. In this mode, the outdoor fresh air flowing through the fresh air heat exchange duct and the indoor turbid air flowing through the turbid air heat exchange duct complete a first heat exchange, followed by a second heat exchange between the fresh air flowing through the fresh air cavity and the electric heating element. Determining the target position of the air inlet baffle and the air outlet baffle according to the target heat exchange mode includes: When the target heat exchange mode is the fifth heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position A2.

[0009] Optionally, the fresh air conditioner also includes a sixth heat exchange mode. In this mode, the outdoor fresh air flowing through the fresh air heat exchange duct and the indoor turbid air flowing through the turbid air heat exchange duct undergo a first heat exchange. Then, the fresh air flowing through the fresh air cavity undergoes a second heat exchange with the electric heating element. Finally, the outdoor fresh air flowing through the return air duct undergoes a third heat exchange with the indoor heat exchanger. Determining the target position of the air inlet baffle and the air outlet baffle based on the target heat exchange mode includes: When the target heat exchange mode is the sixth heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position B2.

[0010] Further optionally, determining the target heat exchange mode of the fresh air conditioning system includes: Calculate the temperature difference between indoor and outdoor air temperatures; Determine whether the temperature difference is within a preset temperature range; The target heat exchange mode of the outdoor fresh air is determined based on the judgment result of whether the temperature difference is within the preset temperature range.

[0011] Further optionally, determining the target heat exchange mode of the outdoor fresh air based on the judgment result of whether the temperature difference is within a preset temperature range includes: When the temperature difference is lower than the minimum threshold of the preset temperature range, the target heat exchange mode is determined to be the first heat exchange mode; When the temperature difference is within a preset temperature range, the target heat exchange mode is determined to be the second heat exchange mode; When the temperature difference is greater than the maximum threshold of the preset temperature range, the target heat exchange mode is determined to be the third heat exchange mode.

[0012] The present invention also provides a control device for the control method of the fresh air conditioner according to any one of the above claims, comprising: The analysis module is used to determine the target heat exchange mode of the fresh air conditioner and, based on the target heat exchange mode, determine the target position of the air inlet baffle and the target position of the air outlet baffle. The control module is used to control the air inlet baffle and the air outlet baffle to move to their respective target positions and to control the fresh air conditioner to operate in the target heat exchange mode.

[0013] The present invention also provides a fresh air conditioner, which employs the control method of the fresh air conditioner described above or a control device including the control method of the fresh air conditioner described above.

[0014] Compared with the prior art, the main advantages of the present invention are as follows: (1) The control method includes determining the target heat exchange mode of the fresh air conditioner, determining the target position of the air inlet baffle and the target position of the air outlet baffle according to the target heat exchange mode, controlling the air inlet baffle and the air outlet baffle to move to the corresponding target positions respectively, and then the fresh air conditioner operates the first heat exchange mode and the second heat exchange mode. When the fresh air conditioner operates the first heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct exchanges heat with the indoor turbid air flowing through the turbid air heat exchange duct; when the fresh air conditioner operates the second heat exchange mode, the outdoor fresh air flowing through the return air duct exchanges heat with the indoor heat exchanger; the control accuracy of the heat exchange mode is improved, the application range of the fresh air conditioner is expanded, the fresh air needs of different users can be met, and the problem of users feeling uncomfortable due to the mismatch between the heat exchange mode and the actual needs of users is solved. (2) When the target heat exchange mode is the first heat exchange mode, the target position of the air inlet baffle is position A1 and the target position of the air outlet baffle is position A2; outdoor fresh air enters the base air duct and flows through the fresh air heat exchange duct, and then is discharged into the room through the fresh air cavity; when the target heat exchange mode is the second heat exchange mode, the target position of the air inlet baffle is position B1 and the target position of the air outlet baffle is position B2; outdoor fresh air enters the fresh air cavity through the inner connecting pipe, and then enters the return air duct through the outer connecting pipe; when the target heat exchange mode is the third heat exchange mode, the target position of the air inlet baffle is position A1 and the target position of the air outlet baffle is position B2; so that the positions of the air inlet baffle and the air outlet baffle are adapted to the heat exchange mode, improve the control accuracy of the heat exchange mode, and reduce the temperature difference between the introduced outdoor fresh air and the indoor air; (3) When the temperature difference is lower than the minimum threshold of the preset temperature range, the target heat exchange mode is determined as the first heat exchange mode; when the temperature difference is within the preset temperature range, the target heat exchange mode is determined as the second heat exchange mode; when the temperature difference is greater than the maximum threshold of the preset temperature range, the target heat exchange mode is determined as the third heat exchange mode; based on the parameters of indoor air and outdoor air, a suitable heat exchange mode is selected to reduce the impact of the introduced outdoor air on indoor air, improve indoor air quality, and ensure indoor air comfort. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a schematic flowchart of an embodiment of the control method for a fresh air conditioner provided by the present invention; Figure 2 This is a schematic diagram of the structure of an indoor unit embodiment provided by the present invention; Figure 3 This is an exploded structural diagram of an embodiment of the fresh air module provided by the present invention; Figure 4 This is an exploded structural diagram of an embodiment of the fresh air component provided by the present invention; Figure 5 This is an exploded structural diagram of an embodiment of the turbid air component provided by the present invention; Figure 6 A schematic diagram of the flow path of outdoor fresh air in the first heat exchange mode of the fresh air conditioner provided by the present invention; Figure 7 A schematic diagram of the flow path of indoor stale air during the first heat exchange mode of the fresh air conditioner provided by the present invention; In the picture: 1-Base; 11-Base body; 111-Base air duct; 12-Base plate; 131-Fresh air inlet duct; 132-Stale air exhaust duct; 141-First frame; 142-Second frame; 151-First partition; 152-Second partition; 16-Fresh air inlet cavity; 17-Stale air connecting cavity; 18-Inner connecting pipe; 21-Heat exchange component; 211-Fresh air heat exchange duct; 212-Stale air heat exchange duct; 22-Filter; 23-Electrical box; 24-Wall mounting plate; 31-Fresh air assembly; 311-Fresh air volute; 312-Fresh air volute cover; 313-Fresh air fan blade; 314-Fresh air cavity; 32-Dull air assembly; 321-Dull air volute; 322-Dull air volute cover; 323-Dull air fan blade; 324-Dull air cavity; 33-Drive motor; 331-First shaft end; 332-Second shaft end; 4 - Face mask; 41 - Face mask inlet; 42 - Face mask outlet; 5-Fresh air module; 6-Indoor unit body. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0020] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0021] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0022] In existing fresh air conditioners, the structural design of the fresh air unit is unreasonable and the heat exchange mode between outdoor fresh air and indoor stale air is singular, resulting in a narrow range of applications for fresh air conditioners, low control precision of heat exchange mode, and inability to meet the fresh air needs of different users. This invention creatively provides a control method for a fresh air conditioner, which includes a fresh air module and an indoor unit body. The base body of the fresh air module forms a base air duct and an inner connecting pipe, and a heat exchanger is arranged inside the base air duct. The heat exchanger forms a fresh air heat exchange duct and a stale air heat exchange duct. A fresh air assembly and a stale air assembly are arranged at the bottom of the base body. The fresh air assembly forms a fresh air cavity, which has a first fresh air cavity inlet, a second fresh air cavity inlet, a first fresh air cavity outlet, and a second fresh air cavity outlet. The first fresh air cavity inlet and the second fresh air cavity inlet are respectively connected to the other end of the base air duct and the other end of the inner connecting pipe. The first fresh air cavity outlet is connected to the indoor unit. The stale air assembly forms a stale air cavity, which is connected to the other end of the stale air heat exchange duct and the outdoor unit. The indoor unit body is arranged on one side of the fresh air module and forms a return air duct. An indoor heat exchanger is arranged inside the return air duct, and the return air duct is connected to the second fresh air cavity outlet through an outer connecting pipe. The air inlet damper has different positions that allow one of the first fresh air cavity inlet and the second fresh air cavity inlet to be open and the other to be closed; the air outlet damper has different positions that allow one of the first fresh air cavity outlet and the second fresh air cavity outlet to be open and the other to be closed; the control method includes determining the target heat exchange mode of the fresh air conditioner, determining the target positions of the air inlet damper and the air outlet damper according to the target heat exchange mode, controlling the air inlet damper and the air outlet damper to move to the corresponding target positions respectively, and then the fresh air conditioner operates the first heat exchange mode and the second heat exchange mode. When the fresh air conditioner operates the first heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct exchanges heat with the indoor turbid air flowing through the turbid air heat exchange duct; when the fresh air conditioner operates the second heat exchange mode, the outdoor fresh air flowing through the return air duct exchanges heat with the indoor heat exchanger; this improves the control accuracy of the heat exchange mode and can meet the fresh air needs of different users.

[0023] <Control Methods> like Figures 2 to 7As shown, this embodiment proposes a fresh air air conditioner, including an indoor unit and an outdoor unit. The indoor unit includes a fresh air module 5 and an indoor unit body 6. The fresh air module 5 is disposed on one side of the indoor unit body 6 and includes a base 1. The base 1 includes a base body 11, which forms a base air duct 111 and an inner connecting pipe 18. A heat exchanger is disposed in the base air duct 111. The heat exchanger forms staggered fresh air heat exchange channels 211 and stale air heat exchange channels 212. Both ends of the fresh air heat exchange channels 211 are connected to the base. The air duct 111 is connected, and the outdoor fresh air flowing through the base air duct 111 can flow through the fresh air heat exchange duct 211; one end of the turbid air heat exchange duct 212 is connected to the indoor environment; one end of the base air duct 111 and one end of the inner connecting pipe 18 are both connected to the outdoors; a fresh air component 31 and a turbid air component 32 are provided at the bottom of the base body 11; the fresh air component 31 forms a fresh air cavity 314, and the fresh air cavity 314 forms a first fresh air cavity inlet, a second fresh air cavity inlet, a first fresh air cavity outlet, and a second fresh air cavity outlet. The inlet of the second fresh air chamber, the outlet of the first fresh air chamber, and the outlet of the second fresh air chamber are all connected to the fresh air chamber 314. The inlet of the first fresh air chamber is connected to the other end of the base air duct 111, allowing outdoor fresh air to enter the fresh air chamber 314 via the base air duct 111 and the inlet of the first fresh air chamber. The inlet of the second fresh air chamber is connected to the other end of the inner connecting pipe 18, allowing outdoor fresh air to enter the fresh air chamber 314 via the inner connecting pipe 18 and the inlet of the second fresh air chamber. The outlet of the first fresh air chamber is connected to the interior, allowing outdoor fresh air in the fresh air chamber 314 to enter the fresh air chamber through the first fresh air chamber. The air is discharged indoors; the fresh air cavity 314 is provided with an air inlet baffle and an air outlet baffle. The air inlet baffle has different positions that allow one of the first fresh air cavity inlet and the second fresh air cavity inlet to be open and the other to be closed; the air outlet baffle has different positions that allow one of the first fresh air cavity outlet and the second fresh air cavity outlet to be open and the other to be closed; the stale air assembly 32 forms a stale air cavity 324, which connects the other end of the stale air heat exchange channel 212 to the outside, and indoor stale air enters the stale air cavity 324 through the stale air heat exchange channel 212; The indoor unit body 6 has a return air duct, an indoor heat exchanger is installed in the return air duct, and the return air duct is connected to the outlet of the second fresh air cavity through an external connecting pipe; the indoor unit body 6 includes a shell, the shell has a return air inlet and an air outlet, and a return air duct is formed between the return air inlet and the air outlet; the connection end of the external connecting pipe to the return air duct is close to the return air inlet, so that the outdoor fresh air in the fresh air cavity 314 enters the return air duct through the outlet of the second fresh air cavity and the external connecting pipe, and completes heat exchange with the indoor heat exchanger. The fresh air conditioning system is equipped with a first heat exchange mode that allows outdoor fresh air flowing through the fresh air heat exchange duct 211 to exchange heat with indoor turbid air flowing through the turbid air heat exchange duct 212, and a second heat exchange mode that allows outdoor fresh air flowing through the return air duct to exchange heat with the indoor heat exchanger; such as Figure 1 As shown, the control methods include: S1. Determine the target heat exchange mode for the fresh air conditioning system; S2. Determine the target positions of the air inlet baffle and the air outlet baffle based on the target heat exchange mode. S3. Control the air inlet baffle and air outlet baffle to move to their respective target positions; S4. Control the target heat exchange mode of the fresh air conditioner.

[0024] To address the problem that improper positioning of the air inlet and return air baffles leads to the inaccurate operation of the corresponding heat exchange mode in the fresh air conditioning system, this embodiment proposes that the air inlet baffle has positions A1 and B1. When the air inlet baffle is in position A1, the inlet of the first fresh air chamber is open and the inlet of the second fresh air chamber is closed; when the air inlet baffle is in position B1, the inlet of the first fresh air chamber is closed and the inlet of the second fresh air chamber is open. The air outlet baffle has positions A2 and B2. When the air outlet baffle is in position A2, the outlet of the first fresh air chamber is open and the outlet of the second fresh air chamber is closed; when the air outlet baffle is in position B2, the outlet of the first fresh air chamber is closed and the outlet of the second fresh air chamber is open. S2 includes: S21. When the target heat exchange mode is the first heat exchange mode, the target position of the air inlet damper is position A1, and the target position of the air outlet damper is position A2. S22. When the target heat exchange mode is the second heat exchange mode, the target position of the air inlet damper is position B1, and the target position of the air outlet damper is position B2.

[0025] Furthermore, the fresh air conditioner also features a third heat exchange mode. In this mode, the outdoor fresh air flowing through the fresh air heat exchange duct 211 and the indoor turbid air flowing through the turbid air heat exchange duct 212 complete the first heat exchange. Then, the outdoor fresh air flowing through the return air duct completes the second heat exchange with the indoor heat exchanger. S2 also includes: S23. When the target heat exchange mode is the third heat exchange mode, the target position of the air inlet damper is position A1, and the target position of the air outlet damper is position B2. This allows the positions of the air inlet and outlet baffles to be adapted to the heat exchange mode, improving the control accuracy of the heat exchange mode and reducing the temperature difference between the introduced outdoor fresh air and the indoor air.

[0026] To address the issue that a single heat exchange mode prevents the introduced outdoor fresh air from meeting diverse fresh air needs, this embodiment proposes that the fresh air module 5 also includes an electric heating element, which is disposed within the fresh air cavity 314; the fresh air conditioner also features a fourth heat exchange mode, in which the fresh air flowing through the fresh air cavity 314 exchanges heat with the electric heating element; S2 further includes: S24. When the target heat exchange mode is the fourth heat exchange mode, the target position of the air inlet damper is position B1, and the target position of the air outlet damper is position A2.

[0027] To address the issue that a single heat exchange mode prevents the introduced outdoor fresh air from meeting diverse fresh air needs, this embodiment further proposes that the fresh air conditioner also includes a fifth heat exchange mode. In this fifth heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct 211 and the indoor turbid air flowing through the turbid air heat exchange duct 212 complete the first heat exchange; subsequently, the fresh air flowing through the fresh air cavity 314 completes the second heat exchange with the electric heating element. S2 also includes: S25. When the target heat exchange mode is the fifth heat exchange mode, the target position of the air inlet damper is position A1, and the target position of the air outlet damper is position A2.

[0028] To address the issue that a single heat exchange mode prevents the introduced outdoor fresh air from meeting diverse fresh air needs, this embodiment further proposes a sixth heat exchange mode for the fresh air conditioner. In this sixth heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct 211 undergoes a first heat exchange with the indoor turbid air flowing through the turbid air heat exchange duct 212. Then, the fresh air flowing through the fresh air cavity 314 undergoes a second heat exchange with the electric heating element. Finally, the outdoor fresh air flowing through the return air duct undergoes a third heat exchange with the indoor heat exchanger. S2 also includes: S26. When the target heat exchange mode is the sixth heat exchange mode, the target position of the air inlet damper is position A1, and the target position of the air outlet damper is position B2.

[0029] To address the issue of the mismatch between the heat exchange mode of the fresh air conditioning system and user needs, this embodiment proposes that S1 includes: S11. Calculate the temperature difference between indoor air temperature and outdoor air temperature; S12. Determine whether the temperature difference is within the preset temperature range; S13. Determine the target heat exchange mode of the outdoor fresh air based on the judgment result of whether the temperature difference is within the preset temperature range.

[0030] Furthermore, S13 includes: S131. When the temperature difference is lower than the minimum threshold of the preset temperature range, the target heat exchange mode is determined to be the first heat exchange mode. S132. When the temperature difference is within the preset temperature range, the target heat exchange mode is determined to be the second heat exchange mode. S133. When the temperature difference is greater than the maximum threshold of the preset temperature range, the target heat exchange mode is determined to be the third heat exchange mode. In this way, by selecting an appropriate heat exchange mode based on the parameters of indoor and outdoor air, the impact of introduced outdoor air on indoor air can be reduced, indoor air quality can be improved, and indoor air comfort can be guaranteed.

[0031] Furthermore, the fresh air module 5 also includes a base plate 12, which is disposed on one side of the base body 11. A fresh air inlet duct 131 and a stale air exhaust duct 132 are disposed on the base plate 12. The fresh air inlet duct 131 connects to the outdoor environment and the base air duct 111, or connects to the outdoor environment and the indoor connecting pipe 18; the stale air exhaust duct 132 connects to the outdoor environment and the stale air outlet. Specifically, the fresh air inlet duct 131 and the stale air exhaust duct 132 are disposed on the side of the base plate 12 away from the base body 11. S4 includes: S41. When the fresh air module 5 is running in the first heat exchange mode, the outdoor fresh air flows sequentially through the fresh air inlet pipe 131, the base air duct 111 and the fresh air heat exchange duct 211 into the fresh air cavity 314 and is discharged into the room; the indoor stale air enters the stale air cavity 324 through the stale air heat exchange duct 212; the outdoor fresh air flowing through the fresh air heat exchange duct 211 exchanges heat with the indoor stale air flowing through the stale air heat exchange duct 212. S42. When the fresh air module 5 is running in the second heat exchange mode, the outdoor fresh air flows through the fresh air inlet pipe 131 and the inner connecting pipe 18 in sequence into the fresh air cavity 314, and then enters the return air duct through the outer connecting pipe; the outdoor fresh air flowing through the return air duct exchanges heat with the indoor heat exchanger. When the fresh air module 5 operates in the third heat exchange mode, outdoor fresh air flows sequentially through the fresh air inlet pipe 131, the base air duct 111, and the fresh air heat exchange duct 211 into the fresh air cavity 314, and then enters the return air duct through the external connecting pipe; indoor stale air enters the stale air cavity 324 through the stale air heat exchange duct 212; the outdoor fresh air flowing through the fresh air heat exchange duct 211 and the indoor stale air flowing through the stale air heat exchange duct 212 complete the first heat exchange, and then the outdoor fresh air flowing through the return air duct completes the second heat exchange with the indoor heat exchanger.

[0032] <Control devices and fresh air conditioning> This embodiment also provides a control device for the control method of the fresh air conditioner described in any of the above claims, including: The analysis module is used to determine the target heat exchange mode of the fresh air conditioner and, based on the target heat exchange mode, determine the target positions of the air inlet baffle and the air outlet baffle. The control module is used to control the movement of the air inlet baffle and the air outlet baffle to their respective target positions and to control the operation of the fresh air conditioner in the target heat exchange mode.

[0033] This embodiment also provides a fresh air conditioner, which employs the control method of the fresh air conditioner described above or a control device that includes the control method of the fresh air conditioner described above. like Figures 2 to 7As shown, the fresh air assembly 31 includes a fresh air volute 311 and a fresh air volute cover 312, which are fastened together to form a fresh air cavity 314; a first fresh air cavity inlet and a second fresh air cavity inlet are arranged side by side at the top of the fresh air cavity 314, and a first fresh air cavity outlet and a second fresh air cavity outlet are arranged side by side at the bottom of the fresh air cavity 314; a fresh air fan blade 313 is rotatably disposed inside the fresh air cavity 314; the stale air assembly 32 includes a stale air volute 321 and a stale air volute cover 322, the stale air volute 321... 1. It is fastened together with the turbid air volute cover 322 to form a turbid air cavity 324; the turbid air cavity 324 forms a turbid air cavity inlet and a turbid air cavity outlet. The turbid air cavity inlet is formed at the top of the turbid air cavity 324 and is connected to the air outlet of the turbid air heat exchange channel 212. The turbid air cavity outlet is formed at the side of the turbid air cavity 324 and is connected to the outside; a turbid air fan blade 323 is rotatably installed inside the turbid air cavity 324; so that indoor air can smoothly enter the turbid air cavity 324 through the turbid air heat exchange channel 212 and the turbid air cavity inlet, and smoothly be discharged to the outside through the turbid air cavity outlet.

[0034] To address the issue of the complex structure of the drive mechanism of the fresh air module 5, this embodiment proposes that the fresh air module 5 also includes a drive motor 33, which is disposed between the fresh air assembly 31 and the stale air assembly 32. The output shaft of the drive motor 33 includes a first shaft end 331 and a second shaft end 332. The fresh air volute 311 has a first shaft hole that communicates with the fresh air cavity 314. The stale air volute 321 has a second shaft hole that communicates with the stale air cavity 324. The first shaft end 331 passes through the first shaft hole and is driven to connect with the fresh air fan blade 313. The second shaft end 332 passes through the second shaft hole and is driven to connect with the stale air fan blade 323. When the drive motor 33 is running, the fresh air fan blade 313 and the stale air fan blade 323 can rotate synchronously, thereby simultaneously introducing outdoor fresh air and exhausting indoor stale air.

[0035] To address the issues of insecure fixing and poor sealing of the filter 22 and heat exchange component 21, this embodiment proposes that the base air duct 111 includes a first mounting position and a second mounting position, which are arranged sequentially along the direction of fresh air flow; a first frame 141 is provided at the first mounting position, and the filter 22 is provided on the first frame 141; the fresh air in the base air duct 111 can flow through the filter 22; A second frame 142 is provided at the second installation position, and a heat exchange component 21 is provided on the second frame 142; specifically, both the first frame 141 and the second frame 142 are cuboid structures, and both the filter 22 and the heat exchange component 21 are cuboid structures; preferably, the heat exchange component 21 is a total heat exchange component.

[0036] Furthermore, the filter 22 is sealed to the first frame 141, and the heat exchanger 21 is sealed to the second frame 142; the seal is tight, so that the fresh air in the base air duct 111 flows through the filter 22 and the fresh air heat exchange duct 211 in sequence and enters the fresh air cavity 314, and the air in the turbid air heat exchange duct 212 enters the turbid air cavity 324. A first partition 151 is provided between the base body 11 and the fresh air component 31. The first partition 151 is close to the base plate 12. The first partition 151, the base plate 12, and the side wall of the base body 11 form a fresh air inlet cavity 16. The fresh air inlet cavity 16 is connected to the air inlet end of the fresh air inlet pipe 131 and the base air duct 111. When the fresh air air conditioner is running in the normal fresh air mode, the outdoor fresh air flows through the fresh air inlet pipe 131 and the fresh air inlet cavity 16 in sequence and enters the base air duct 111. A second partition 152 is also provided between the base body 11 and the fresh air component 31. A fresh air connection port is formed between the second partition 152 and the side wall of the base body 11. The fresh air connection port connects the air outlet of the base air duct 111 and the inlet of the fresh air cavity. A turbid air connection cavity 17 is formed between the second partition 152, the first frame 141, the second frame 142 and the turbid air volute 321. The turbid air connection cavity 17 connects the turbid air heat exchange channel 212 and the inlet of the turbid air cavity 324. The air in the turbid air heat exchange channel 212 enters the turbid air cavity 324 through the turbid air connection cavity 17.

[0037] An electrical box mounting position is also formed on the bottom side of the base plate 12 near the base body 11. The electrical box 23 is set at the electrical box mounting position and is connected to the base plate 12 by threads. A fresh air control board is set inside the electrical box 23. The fresh air control board is electrically connected to the drive motor 33 to control the operation of the drive motor 33. The base body 11 has a slot formed on the side wall near the base plate 12. The slot is used to mount the base plate 12 on the wall-mounted plate 24, so that the base plate 12 can be mounted on the wall. In addition, the fresh air module 5 also includes a mask 4, which is detachably fastened to the base plate 12 to form an installation cavity, and the base body 11 is provided in the installation cavity; the top wall of the mask 4 forms a mask inlet 41, which connects the indoor air to the air inlet of the turbid air heat exchange channel 212; indoor air can enter the turbid air heat exchange channel 212 through the mask inlet 41. The bottom wall of the mask 4 has a mask outlet 42, which connects the fresh air cavity outlet to the room; the fresh air in the fresh air cavity 314 can be discharged into the room through the fresh air cavity outlet and the mask outlet 42.

[0038] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A method for controlling a fresh air conditioning system, characterized in that, The fresh air conditioner includes an indoor unit, which comprises a fresh air module and an indoor unit body. The fresh air module includes a base body, which forms a base air duct and an inner connecting pipe. A heat exchange component is installed inside the base air duct. The heat exchange component forms a fresh air heat exchange duct and a stale air heat exchange duct. Both ends of the fresh air heat exchange duct are connected to the base air duct, and one end of the stale air heat exchange duct is connected to the indoor unit. One end of the base air duct and one end of the inner connecting pipe are both connected to the outdoor unit. A fresh air assembly and a stale air assembly are installed at the bottom of the base body. The fresh air assembly forms a fresh air cavity, which has a first fresh air cavity inlet and a second fresh air cavity inlet. A first fresh air chamber outlet and a second fresh air chamber outlet are provided. The first fresh air chamber inlet is connected to the other end of the base air duct, and the second fresh air chamber inlet is connected to the other end of the inner connecting pipe. The first fresh air chamber outlet is connected to the indoor environment. An air inlet baffle and an air outlet baffle are provided inside the fresh air chamber. The air inlet baffle has different positions that allow one of the first fresh air chamber inlet and the second fresh air chamber inlet to be open and the other to be closed. The air outlet baffle has different positions that allow one of the first fresh air chamber outlet and the second fresh air chamber outlet to be open and the other to be closed. The turbid air assembly forms a turbid air chamber, which is connected to the other end of the turbid air heat exchange duct and the outside environment. The indoor unit body is located on one side of the fresh air module and forms a return air duct. An indoor heat exchanger is installed in the return air duct, and the return air duct is connected to the outlet of the second fresh air chamber through an external connecting pipe. The fresh air air conditioner is equipped with a first heat exchange mode that allows outdoor fresh air flowing through the fresh air heat exchange duct to exchange heat with indoor turbid air flowing through the turbid air heat exchange duct, and a second heat exchange mode that allows outdoor fresh air flowing through the return air duct to exchange heat with the indoor heat exchanger. The control method includes: Determine the target heat exchange mode for the fresh air conditioning system; The target positions of the air inlet baffle and the air outlet baffle are determined according to the target heat exchange mode. Control the air inlet baffle and air outlet baffle to move to their respective target positions; Control the operation of the fresh air conditioner to the target heat exchange mode.

2. The control method for a fresh air conditioning system according to claim 1, characterized in that, The air inlet baffle has positions A1 and B1. When the air inlet baffle is in position A1, the first fresh air cavity inlet is open and the second fresh air cavity inlet is closed. When the air inlet baffle is in position B1, the first fresh air cavity inlet is closed and the second fresh air cavity inlet is open. The air outlet baffle has positions A2 and B2. When the air outlet baffle is in position A2, the first fresh air cavity outlet is open and the second fresh air cavity outlet is closed. When the air outlet baffle is in position B2, the first fresh air cavity outlet is closed and the second fresh air cavity outlet is open. Determining the target positions of the inlet damper and the outlet damper based on the target heat exchange mode includes: When the target heat exchange mode is the first heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position A2. When the target heat exchange mode is the second heat exchange mode, the target position of the air inlet baffle is the B1 position, and the target position of the air outlet baffle is the B2 position.

3. The control method for a fresh air conditioning system according to claim 2, characterized in that, The fresh air conditioner also has a third heat exchange mode. When the fresh air conditioner is in the third heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct and the indoor turbid air flowing through the turbid air heat exchange duct complete the first heat exchange, and then the outdoor fresh air flowing through the return air duct and the indoor heat exchanger complete the second heat exchange; determining the target position of the air inlet baffle and the target position of the air outlet baffle according to the target heat exchange mode includes: When the target heat exchange mode is the third heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position B2.

4. The control method for a fresh air conditioning system according to claim 2, characterized in that, The fresh air module further includes an electric heating element disposed within the fresh air cavity; the fresh air conditioner also has a fourth heat exchange mode, in which the fresh air flowing through the fresh air cavity exchanges heat with the electric heating element when the fresh air conditioner is in the fourth heat exchange mode; determining the target position of the air inlet baffle and the target position of the air outlet baffle according to the target heat exchange mode includes: When the target heat exchange mode is the fourth heat exchange mode, the target position of the air inlet baffle is the B1 position, and the target position of the air outlet baffle is the A2 position.

5. The control method for a fresh air conditioning system according to claim 4, characterized in that, The fresh air conditioner also has a fifth heat exchange mode. When the fresh air conditioner is in the fifth heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct and the indoor stale air flowing through the stale air heat exchange duct complete the first heat exchange, and then the fresh air flowing through the fresh air cavity completes the second heat exchange with the electric heating element; determining the target position of the air inlet baffle and the target position of the air outlet baffle according to the target heat exchange mode includes: When the target heat exchange mode is the fifth heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position A2.

6. The control method for a fresh air conditioning system according to claim 5, characterized in that, The fresh air conditioner also has a sixth heat exchange mode. When the fresh air conditioner is in the sixth heat exchange mode, the outdoor fresh air flowing through the fresh air heat exchange duct and the indoor turbid air flowing through the turbid air heat exchange duct complete the first heat exchange. Then, the fresh air flowing through the fresh air cavity and the electric heating element complete the second heat exchange. Finally, the outdoor fresh air flowing through the return air duct and the indoor heat exchanger complete the third heat exchange. Determining the target positions of the inlet damper and the outlet damper based on the target heat exchange mode includes: When the target heat exchange mode is the sixth heat exchange mode, the target position of the air inlet baffle is position A1, and the target position of the air outlet baffle is position B2.

7. The control method for a fresh air conditioning system according to claim 3, characterized in that, The determination of the target heat exchange mode for the fresh air conditioning system includes: Calculate the temperature difference between indoor and outdoor air temperatures; Determine whether the temperature difference is within a preset temperature range; The target heat exchange mode of the outdoor fresh air is determined based on the judgment result of whether the temperature difference is within the preset temperature range.

8. The control method for a fresh air conditioning system according to claim 7, characterized in that, The step of determining the target heat exchange mode of the outdoor fresh air based on the judgment result of whether the temperature difference is within a preset temperature range includes: When the temperature difference is lower than the minimum threshold of the preset temperature range, the target heat exchange mode is determined to be the first heat exchange mode; When the temperature difference is within a preset temperature range, the target heat exchange mode is determined to be the second heat exchange mode; When the temperature difference is greater than the maximum threshold of the preset temperature range, the target heat exchange mode is determined to be the third heat exchange mode.

9. A control device for the control method of a fresh air conditioning system according to any one of claims 1-8, characterized in that, The control device includes: The analysis module is used to determine the target heat exchange mode of the fresh air conditioner and, based on the target heat exchange mode, determine the target position of the air inlet baffle and the target position of the air outlet baffle. The control module is used to control the air inlet baffle and the air outlet baffle to move to their respective target positions and to control the fresh air conditioner to operate in the target heat exchange mode.

10. A fresh air conditioning system, characterized in that, The control method of the fresh air conditioner according to any one of claims 1-8 or the control device including the control method of the fresh air conditioner according to claim 9.

Images