Fresh air module and air conditioning equipment

Abstract

The invention discloses a fresh air module and air conditioning equipment. The fresh air module comprises an air cavity, an air inlet and an air outlet, the single fan is arranged in the air cavity; the indoor interface and the outdoor interface are communicated with the air cavity; the filtering assembly is arranged on an airflow path in the air cavity, and the filtering assembly is configured to be switched between a filtering state and a non-filtering state; and the airflow path control device is configured to establish a fresh air airflow path for sucking air from the outdoor interface and conveying air into a room through the indoor interface in the first working mode, and control the filtering assembly to be in a filtering state. According to the fresh air module, the fresh air mode and the exhaust mode can be flexibly switched only through the single fan, the problems that an existing double-fan system is large in size, complex in structure, difficult to install and high in energy consumption are solved, and simplification of the overall structure and convenience and rapidness in installation are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, and particularly relates to a fresh air module and air conditioning equipment. BACKGROUND

[0002] With the improvement of people's living standards, the requirement for indoor air quality is getting higher and higher. The traditional air conditioning equipment as a temperature regulator in a closed space environment often needs to increase a fresh air module to improve the indoor air quality.

[0003] In the prior art, there are two mainstream schemes to realize the fresh air and exhaust air functions. The first scheme is to use a double-fan system, that is, to set an air inlet fan and an air outlet fan respectively. Although this scheme has clear functions, it has problems such as large overall volume of equipment, high energy consumption, and complex installation caused by the need to open two independent air ducts on the wall, resulting in high comprehensive cost.

[0004] The second scheme is a single-fan system that appears to overcome the shortcomings of the double-fan system. This scheme uses a single fan to alternately realize the air inlet and air outlet functions by switching the air path, thereby reducing the volume and energy consumption of the equipment to a certain extent. However, this single-fan system still has obvious technical defects: the filter screen in the system is mainly used to purify the outdoor fresh air introduced into the room. However, when performing the air outlet function, the indoor dirty air that does not need to be filtered is also forced to pass through the same filter screen. This "ineffective filtering" not only does not bring any purification benefit, but also causes the filter screen to be clogged due to the adsorption of indoor dust, greatly shortening its effective service life, thereby increasing the user's maintenance cost and replacement frequency.

[0005] In view of the above problems, there is an urgent need for a fresh air module with simple structure and convenient installation, which can realize the free switching of air inlet and air outlet functions by a single fan, reduce the need for pipe and wall opening, and prolong the service life of the filter screen. SUMMARY

[0006] The main purpose of the present application is to provide a fresh air module and air conditioning equipment to solve the above technical problems.

[0007] In a first aspect, the present application provides a fresh air module, comprising: an air cavity; a single air fan arranged in the air cavity; an indoor interface and an outdoor interface in communication with the air cavity; a filter assembly arranged on an air flow path in the air cavity, the filter assembly being configured to switch between a filtering state and a non-filtering state; and an air flow path control device, the air flow path control device being configured to: in a first working mode, establish a fresh air flow path that draws in air from the outdoor interface and delivers the air to the indoor via the indoor interface, and control the filter assembly to be in the filtering state; and in a second working mode, establish an exhaust air flow path that draws in air from the indoor interface and discharges the air to the outdoor via the outdoor interface, and control the filter assembly to be in the non-filtering state, so that the filter assembly avoids the air on the exhaust air flow path.

[0008] Further comprising: a volute, the volute forming a first part of the air cavity, the air fan being accommodated in the first part of the air cavity; and an air duct assembly, the air duct assembly being connected with the volute to form a second part of the air cavity, the filter assembly being accommodated in the second part of the air cavity, the second part of the air cavity being in communication with the first part of the air cavity.

[0009] The indoor interface comprises an indoor air inlet arranged on the air duct assembly and an indoor air outlet arranged on the volute; and the outdoor interface comprises an outdoor air inlet arranged on the air duct assembly and an outdoor air outlet arranged on the volute.

[0010] The air duct assembly comprises an air duct shell and an air inlet pipe, the indoor air inlet and the outdoor air inlet are arranged on the air duct shell respectively; the air duct shell is connected with the volute, and the outdoor air outlet is in communication with the outdoor air inlet through the air inlet pipe.

[0011] The air flow path control device comprises: a first valve arranged at the indoor air outlet; a second valve configured to, in one state, establish communication between the outdoor air outlet and the outdoor air inlet and close the communication between the outdoor air outlet and the first part of the air cavity; and in another state, establish communication between the outdoor air outlet and the first part of the air cavity and close the communication between the outdoor air outlet and the outdoor air inlet; and a baffle assembly movably arranged between the indoor air inlet and the outdoor air inlet, the baffle assembly being configured to move between a first position shielding the indoor air inlet, a second position shielding the outdoor air inlet, and at least one intermediate position between the first position and the second position.

[0012] The airflow path control device is further configured to, in the third working mode, establish an inner circulation path for drawing air from the indoor air inlet, delivering the air to the indoor space via the indoor air outlet, and control the filter assembly to be in the filtering state; wherein in the third working mode, the first valve is in the open state, the second valve is in the one state to close the communication between the outdoor air outlet and the first part of the air cavity, and the baffle assembly is in the second position to shield the outdoor air inlet.

[0013] The airflow path control device is further configured to, in the fourth working mode, establish a mixed air path for drawing air from the indoor air inlet and the outdoor air inlet simultaneously, delivering the air to the indoor space via the indoor air outlet, and control the filter assembly to be in the filtering state; wherein in the fourth working mode, the first valve is in the open state, the second valve is in the one state to close the communication between the outdoor air outlet and the first part of the air cavity, and the baffle assembly is in the at least one intermediate position to partially open the indoor air inlet and the outdoor air inlet.

[0014] The filter assembly comprises a fixed part, a movable part movable relative to the fixed part, and a filter part connected between the fixed part and the movable part; wherein when the movable part is in one position, the filter part is unfolded to be in the filtering state; and when the movable part is in another position, the filter part is folded to be in the non-filtering state.

[0015] The air duct shell comprises a shell plate part and a protruding part arranged at the edge of the shell plate part, the protruding part is respectively provided with a slot and a guide rail, the fixed part is arranged in the slot, and the movable part is connected with the guide rail through a sliding block.

[0016] In a second aspect, the present application further provides an air conditioning device comprising the fresh air module of the first aspect.

[0017] The beneficial technical effect of the present application: the fresh air module of the present application can be flexibly switched between fresh air mode and exhaust mode by using only a single fan, avoiding the problems of large size, complex structure, difficult installation and high energy consumption of the existing double fan system, realizing the simplification of the overall structure and the convenience of installation. At the same time, the filter assembly provided in the present application can be switched between filtering state and non-filtering state: in fresh air mode, it is expanded to effectively purify outdoor air, ensuring that the air sent into the room is clean; in exhaust mode, it is retracted and avoids the airflow path, thereby avoiding the "ineffective filtering" of the exhaust airflow on the filter assembly in the existing single fan scheme, effectively prolonging the service life of the filter assembly and reducing maintenance costs. Since the filter assembly no longer forms additional wind resistance when exhausting, energy loss can also be reduced, and operation efficiency can be improved. Therefore, the present application not only takes into account the advantages of miniaturization, low energy consumption and convenient installation, but also further solves the problem of easy wear and tear of the filter assembly, significantly improving the overall use experience and economy of the fresh air module. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 The three-dimensional schematic diagram of the fresh air module provided for the embodiments of the present application;

[0020] Figure 2 Another perspective three-dimensional schematic diagram of the fresh air module provided for the embodiments of the present application;

[0021] Figure 3 The exploded schematic diagram of the fresh air module provided for the embodiments of the present application;

[0022] Figure 4 The three-dimensional schematic diagram of the volute assembly and the first valve therein in the fresh air module provided for the embodiments of the present application;

[0023] Figure 5 The three-dimensional schematic diagram of the volute cover assembly and the second valve therein in the fresh air module provided for the embodiments of the present application;

[0024] Figure 6 The three-dimensional schematic diagram of the filter assembly in the fresh air module provided for the embodiments of the present application;

[0025] Figure 7 The three-dimensional schematic diagram of the air duct assembly in the fresh air module provided for the embodiments of the present application;

[0026] Figure 8 Another perspective schematic diagram of the air duct assembly in the fresh air module provided for the embodiments of the present application;

[0027] Figure 9 A new air mode airflow path schematic diagram in the fresh air module provided by the embodiment of the present application;

[0028] Figure 10 An exhaust air mode airflow path schematic diagram in the fresh air module provided by the embodiment of the present application;

[0029] Figure 11 An internal circulation mode airflow path schematic diagram in the fresh air module provided by the embodiment of the present application;

[0030] Figure 12 A mixed air mode airflow path schematic diagram in the fresh air module provided by the embodiment of the present application;

[0031] Figure 13 A schematic diagram of the air conditioning equipment provided by the embodiment of the present application.

[0032] Explanation of reference signs:

[0033] In the figure: 1 - volute assembly, 2 - centrifugal fan blade, 3 - volute cover assembly, 5 - filter assembly, 6 - air duct assembly, 7 - indoor air inlet, 8 - outdoor air inlet, 9 - indoor air outlet, 10 - outdoor air outlet, 100 - air conditioning equipment, 200 - fresh air module, 110 - first drive motor, 120 - first valve, 130 - volute, 310 - second drive motor, 320 - second valve, 510 - fixed shell, 520 - folding filter screen, 530 - movable shell, 610 - air inlet pipe, 620 - third drive motor, 630 - swing rod, 640 - baffle assembly, 650 - sliding slot, 660 - insertion slot, 670 - guide rail, 680 - air duct shell. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0035] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0036] It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise.

[0037] It is further to be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of' encompasses each possible combination of one or more of the associated listed items.

[0038] Reference is made to Figures 1-3 The fresh air module according to the embodiments of the present application is configured to achieve multiple functions such as fresh air and exhaust air by a single fan and a filter assembly 5 with switchable states, while avoiding the invalid consumption of the filter assembly 5 during exhaust air, thereby prolonging the service life of the filter assembly 5. The fresh air module comprises a wind cavity; a single fan arranged in the wind cavity; an indoor interface and an outdoor interface in communication with the wind cavity; a filter assembly 5 arranged on an air flow path in the wind cavity, the filter assembly 5 being configured to switch between a filtering state and a non-filtering state; and an air flow path control device, the air flow path control device being configured to: in a first working mode, establish a fresh air air flow path for drawing in air from the outdoor interface and delivering the air to the indoor environment via the indoor interface, and control the filter assembly 5 to be in the filtering state; and in a second working mode, establish an exhaust air air flow path for drawing in air from the indoor interface and discharging the air to the outdoor environment via the outdoor interface, and control the filter assembly 5 to be in the non-filtering state, so that the filter assembly 5 avoids the air on the exhaust air air flow path.

[0039] In the embodiments, the fresh air module comprises a housing with a wind cavity formed therein, which provides a space for the flow of air. A single fan is arranged in the wind cavity, such as a centrifugal fan blade 2 as shown in Figure 3 The fan is the only power component in the fresh air module for driving the flow of air, and provides power for the establishment of different air flow paths such as fresh air and exhaust air through its rotation.

[0040] In order to exchange air with the external environment, the fresh air module is provided with an indoor interface and an outdoor interface in communication with the wind cavity. Specifically, the indoor interface is used to achieve air exchange between the fresh air module and the indoor environment, while the outdoor interface is used to achieve air exchange between the fresh air module and the outdoor environment. Through the two interfaces, the fan can drive the air to flow bidirectionally between the indoor and outdoor environments.

[0041] In order to purify the air entering the room, the fresh air module further comprises a filter assembly 5. The filter assembly 5 is arranged on the air flow path in the air cavity, and can be switched between a filtering state and a non-filtering state. In the filtering state, the filter assembly 5 can effectively intercept and filter particulate matter, dust and other pollutants in the flowing air; and in the non-filtering state, the filter assembly 5 changes its structure form (such as folding or folding), so that it actively avoids the air flow path and no longer has a filtering effect on the flowing air.

[0042] In addition, the fresh air module further comprises an air flow path control device. The device is used to control the working mode of the fresh air module according to the user's needs or preset program, and its function is to regulate the air flow path in the air cavity and the state of the filter assembly 5. The air flow path control device is configured to at least implement the following two working modes:

[0043] The first working mode (fresh air mode): in this mode, the air flow path control device aims to send the fresh air from the outdoor to the indoor after purification. The specific operation is: the air flow path control device establishes a fresh air flow path that sucks outdoor air from the outdoor interface and delivers the air to the indoor through the indoor interface. At the same time, the air flow path control device will instruct the filter assembly 5 to switch to the filtering state. In this mode, the fan is started, and the fresh air from the outdoor is sucked into the air cavity through the outdoor interface, and then the air flow must pass through the filter assembly 5 in the unfolded filtering state, and the pollutants in the air are effectively removed. The purified fresh air is finally delivered to the indoor through the indoor interface under the action of the fan, so as to achieve the purpose of improving the indoor air quality. The air flow path in this mode can be summarized as: outdoor air→outdoor interface→air cavity→filter assembly 5 (filtering state)→fan→indoor interface→indoor.

[0044] The second working mode (exhaust mode): in this mode, the airflow path control device aims to exhaust the dirty air in the room to the outside. The specific operation is that the airflow path control device establishes an exhaust airflow path that sucks in the indoor air from the indoor interface and exhausts the air to the outside through the outdoor interface. The key is that in this mode, the airflow path control device will simultaneously instruct the filter assembly 5 to switch to the non-filtering state. In this mode, the fan is started, and the dirty air in the room is sucked into the wind cavity through the indoor interface. Since the filter assembly 5 is in the non-filtering state at this time, it is no longer located or obstructs the exhaust airflow path, and the indoor air can directly flow to the fan and eventually be exhausted to the outside through the outdoor interface. By actively avoiding the exhaust airflow path, the filter assembly 5 can effectively prevent dust and other pollutants in the indoor air from adhering to the filter assembly 5, thereby avoiding the problem of shortened service life and increased maintenance cost of the filter assembly 5 caused by "ineffective filtering". The airflow path in this mode can be summarized as: indoor air → indoor interface → wind cavity → fan → outdoor interface → outdoor.

[0045] In the exhaust mode of the fresh air module, the filter assembly 5 is switched from the filtering state to the non-filtering state by the switching of its own structural state, achieving active avoidance of the exhaust airflow. This way does not need to set up an additional bypass channel or independent air path, making the internal structure of the entire module more compact and reasonable, reducing the complexity of the air path switching structure. Since the dedicated bypass air path is omitted, the exhaust airflow path remains simple and smooth, effectively reducing additional wind resistance and potential leakage points, ensuring airflow delivery efficiency. Therefore, this design not only solves the technical problem of "avoiding ineffective filtering during exhaust", but also further achieves the effect of small module size and high space utilization.

[0046] In summary, the fresh air module of the present embodiment achieves bidirectional switching of indoor and outdoor air flow by using a single fan, avoiding the need for additional components in traditional dual-fan systems, thereby achieving overall structural simplification. At the same time, the filter assembly 5 is only in the filtering state in the fresh air flow path, and is retracted to avoid wind resistance in the exhaust air flow path, which not only prolongs the service life of the filter assembly 5, but also reduces the additional energy loss during exhaust, thereby achieving the effect of reducing energy consumption.

[0047] In an embodiment, the fresh air module further comprises a volute 130, wherein the first part of the wind cavity is formed in the volute 130, and the fan is accommodated in the first part of the wind cavity; and a duct assembly 6 connected with the volute 130 to form a second part of the wind cavity, wherein the filter assembly 5 is accommodated in the second part of the wind cavity, and the second part of the wind cavity is in communication with the first part of the wind cavity.

[0048] As Figures 1 to 3As shown, in the present embodiment, the air cavity of the fresh air module is composed of two main parts, namely the first part of the air cavity and the second part of the air cavity.

[0049] Specifically, the fresh air module of the present embodiment comprises a volute 130 and an air duct assembly 6.

[0050] The volute 130 is used to form the first part of the air cavity, which is the power core area of the fresh air module. In the present embodiment, the volute 130 can be formed by cooperation of the volute assembly 1 and the volute cover assembly 3 fixedly connected thereto. The volute assembly 1 specifically can comprise a volute 130 with a spiral flow channel, and a driving motor installed thereon to drive the rotation of the fan. After the volute assembly 1 and the volute cover assembly 3 are spliced together, they jointly define a volute 130 space, which is the first part of the air cavity. A single fan, for example, a centrifugal fan blade 2, is accommodated in this first part of the air cavity.

[0051] The air duct assembly 6 is connected with the volute 130 and is used to form the second part of the air cavity. Specifically, the air duct assembly 6 is butted against the volute cover assembly 3 through the air duct shell 680 thereof, so that the second part of the air cavity is in smooth communication with the first part of the air cavity, thereby ensuring that the airflow generated by the fan can flow unhindered between the two parts. Here, the communication is mainly through the through passage in the middle of the volute cover assembly 3, which serves as the communication passage between the first part of the air cavity and the second part of the air cavity. The second part of the air cavity mainly serves as a transition area for the airflow and an installation area for functional components. In the present embodiment, the filter assembly 5 is accommodated in the second part of the air cavity as a whole. This part provides sufficient space for the unfolding and folding of the filter assembly 5, so that it can be switched between the filtering state and the non-filtering state as needed according to the working mode.

[0052] Through the above structural design, the present embodiment divides the air cavity into two functionally clear sub-zones: the first part as the fan cavity for installing and fixing the fan to ensure reliable output of air power; and the second part as the filter cavity for accommodating the filter assembly 5 and guiding the airflow. This sub-zoned air cavity structure not only makes the functions of each part clear and mutually non-interfering, but also greatly simplifies the maintenance operation. For example, when the filter assembly 5 needs to be replaced or cleaned, the user only needs to disassemble the air duct assembly 6, without needing to touch and disassemble the volute 130 part containing the fan and the first driving motor 110, thereby improving the convenience of maintenance.

[0053] In the present embodiment, the volute assembly 1 and the volute cover assembly 3 can be fixedly connected by means of bolts or buckles; the air duct assembly 6 and the volute cover assembly 3 can be fixedly connected by means.

[0054] In one embodiment, the indoor interface includes an indoor air inlet 7 disposed on the air duct assembly 6 and an indoor air outlet 9 disposed on the volute 130; the outdoor interface includes an outdoor air inlet 8 disposed on the air duct assembly 6 and an outdoor air outlet 10 disposed on the volute 130.

[0055] like Figures 1 to 3 As shown, in this embodiment, the indoor interface includes an indoor air inlet 7 disposed on the air duct assembly 6 and an indoor air outlet 9 disposed on the volute 130. Specifically, the indoor air inlet 7 is an opening for drawing in indoor air; it is disposed on the air duct assembly 6 so that indoor air can be drawn into the second part of the air chamber. The indoor air outlet 9 is an opening for supplying air into the room; it is disposed on the volute 130, for example, at the air outlet tangential position of the volute assembly 1, so that the air pressurized by the fan can be efficiently delivered into the room.

[0056] The outdoor interface includes an outdoor air inlet 8 on the air duct assembly 6 and an outdoor air outlet 10 on the volute 130. Specifically, the outdoor air inlet 8 is an opening for drawing in fresh air from the outside. It is provided on the air duct assembly 6 together with the indoor air inlet 7, allowing outdoor air to enter the second part of the air chamber. The outdoor air outlet 10 is an opening for expelling air from the air chamber to the outside. It is provided on the volute 130, for example, on the volute cover assembly 3, thereby guiding the air exhausted by the fan to the outside. It should be noted that the outdoor air outlet 10, as the physical interface connecting this fresh air module to the external ventilation duct, serves not only as the air outlet in exhaust mode but also as the initial inlet for fresh outdoor air to enter the module in fresh air mode.

[0057] With this structural layout, all air inlets (indoor air inlet 7 and outdoor air inlet 8) are located on one side of the duct assembly 6. This ensures that all air entering the module (whether from indoors or outdoors) must first pass through the second part of the air cavity, i.e., the area where the filter assembly 5 is located. All airflow leaving the fan is distributed through two outlets (indoor air outlet 9 and outdoor exhaust outlet 10) located on the volute 130. This design provides a clear and efficient structural foundation for subsequent airflow path control devices, which can flexibly achieve multiple operating modes such as fresh air and exhaust air by simply switching internal valves and baffles 640, all while sharing a single fan and a single wall opening.

[0058] In one embodiment, the air duct assembly 6 includes an air duct housing 680 and an air inlet duct 610, with the indoor air inlet 7 and the outdoor air inlet 8 respectively disposed on the air duct housing 680; the air duct housing 680 is connected to the volute 130, and the outdoor exhaust vent 10 is connected to the outdoor air inlet 8 through the air inlet duct 610.

[0059] As shown in FIG. 1, the air duct housing 680 constitutes the overall frame of the air duct assembly 6, one side of which is connected with the volute cover assembly 3 to jointly enclose the second part of the air cavity. As mentioned above, the indoor air inlet 7 and the outdoor air inlet 8 are both provided on the air duct housing 680. These two air inlets are the passages for air to enter the second part of the air cavity. Figure 7 Figure 8 The key of the present embodiment is that the outdoor air outlet 10 is connected with the outdoor air inlet 8 through the air inlet duct 610.

[0060] Specifically, the air inlet duct 610 is an independent passage. One end of the air inlet duct 610 is connected with the outdoor air outlet 10 provided on the volute 130, and the other end is connected with the outdoor air inlet 8 provided on the air duct housing 680.

[0061] The purpose of this structure is to achieve "single-hole air exchange", that is, the fresh air module can complete the intake of fresh air and the discharge of exhaust air through only one physical interface (i.e. the outdoor air outlet 10) connected with the outside. When the fresh air module works in the fresh air mode, outdoor fresh air enters from the outdoor air outlet 10 connected with the outside, and is then guided into the air inlet duct 610. The air flows along the air inlet duct 610, and finally enters the second part of the air cavity from the outdoor air inlet 8 provided on the air duct housing 680, and then flows through the filter assembly 5 for purification.

[0062] By providing such an air inlet duct 610, the present embodiment connects the "outdoor air outlet 10" as the module's external physical interface and the "outdoor air inlet 8" as the fresh air entering the filtering area, and establishes a clear and dedicated air flow path for the fresh air mode in structure. This design is the key to achieving the bidirectional air exchange function with a single fan and a single wall opening.

[0063] In an embodiment, the air flow path control device comprises: a first valve 120 provided at the indoor air outlet 9; a second valve 320 configured to, in one state, establish the communication between the outdoor air outlet 10 and the outdoor air inlet 8, and block the communication between the outdoor air outlet 10 and the first part of the air cavity; and in another state, establish the communication between the outdoor air outlet 10 and the first part of the air cavity, and block the communication between the outdoor air outlet 10 and the outdoor air inlet 8; and a baffle assembly movably provided between the indoor air inlet 7 and the outdoor air inlet 8, the baffle assembly being configured to move between a first position shielding the indoor air inlet 7, a second position shielding the outdoor air inlet 8, and at least one intermediate position between the first position and the second position.

[0064] In an embodiment, the air flow path control device comprises: a first valve 120 provided at the indoor air outlet 9; a second valve 320 configured to, in one state, establish the communication between the outdoor air outlet 10 and the outdoor air inlet 8, and block the communication between the outdoor air outlet 10 and the first part of the air cavity; and in another state, establish the communication between the outdoor air outlet 10 and the first part of the air cavity, and block the communication between the outdoor air outlet 10 and the outdoor air inlet 8; and a baffle assembly movably provided between the indoor air inlet 7 and the outdoor air inlet 8, the baffle assembly being configured to move between a first position shielding the indoor air inlet 7, a second position shielding the outdoor air inlet 8, and at least one intermediate position between the first position and the second position. ​

[0065] like Figure 4 and Figure 5 As shown, in this embodiment, the first valve 120 is located at the indoor air outlet 9. The function of the first valve 120 is to control the opening and closing of the indoor air outlet channel. For example, when the fresh air module needs to supply air into the room (such as in fresh air mode), the first valve 120 opens; when it does not need to supply air into the room (such as in exhaust mode), the first valve 120 closes to prevent airflow from entering the room. In this embodiment, the first valve 120 can be an electrically adjustable valve controlled by the first drive motor 110.

[0066] like Figure 5 As shown, the second valve 320 is configured to, in one state, establish communication between the outdoor exhaust vent 10 and the outdoor air inlet 8, and close the communication between the outdoor exhaust vent 10 and the first part of the air cavity; in another state, establish communication between the outdoor exhaust vent 10 and the first part of the air cavity, and close the communication between the outdoor exhaust vent 10 and the outdoor air inlet 8. More specifically, the second valve 320 can be a switching valve located at the intersection of the outdoor exhaust vent 10, the inlet of the air inlet duct 610, and the first part of the air cavity.

[0067] In one state (e.g., fresh air mode), the second valve 320 actuates, causing the outside air entering from the outdoor exhaust vent 10 to flow only into the air intake duct 610, and then into the second part of the air chamber through the outdoor air intake vent 8. At this time, the passage between the first part of the air chamber and the outdoor exhaust vent 10 is sealed, preventing the fan from directly exhausting air.

[0068] In another state (e.g., exhaust mode), the second valve 320 switches, allowing the air in the first part of the air chamber to flow directly to the outdoor exhaust vent 10 and be discharged. At this time, the passage between the outdoor exhaust vent 10 and the air inlet duct 610 is sealed, preventing the entry of outdoor air.

[0069] In this embodiment, the second valve 320 can be a rotary valve driven by the second drive motor 310, which can switch between the two states by rotating at different angles.

[0070] A baffle assembly 640 is movably disposed between the indoor air inlet 7 and the outdoor air inlet 8. The baffle assembly 640 is configured to move between a first position shielding the indoor air inlet 7, a second position shielding the outdoor air inlet 8, and at least one intermediate position between the first and second positions. The function of the baffle assembly 640 is to selectively control the air source, i.e., to determine whether air is drawn in from the indoor environment, from the outside, or a mixture of both.

[0071] When the baffle assembly 640 is in the first position, the indoor air inlet 7 is completely blocked, and only the outdoor air inlet 8 is open. At this time, the module can only draw in outdoor air.

[0072] When the baffle assembly 640 is in the second position, the outdoor air inlet 8 is completely blocked, and only the indoor air inlet 7 is open. At this time, the module can only draw in indoor air.

[0073] When the baffle assembly 640 is in the middle position, both the indoor air inlet 7 and the outdoor air inlet 8 are partially open, allowing the module to simultaneously draw in indoor and outdoor air.

[0074] Through the above design, the fresh air module in this embodiment can achieve diversified control of the air path under different operating conditions:

[0075] The indoor air supply is controlled by the first valve 120;

[0076] The outdoor air intake or outdoor air exhaust can be selected via the second valve 320;

[0077] Indoor and outdoor air intakes can be selected or combined using baffle assemblies.

[0078] This structure not only lays the foundation for the realization of fresh air mode and exhaust air mode, but also provides control conditions for the subsequent expansion of indoor air circulation, mixed air supply and other modes.

[0079] In summary, this embodiment simplifies the air path switching method by rationally arranging valves and baffles 640 at the indoor and outdoor interfaces, enabling a single fan to achieve multiple air flow paths with a small number of moving parts, thereby reducing system complexity and energy consumption.

[0080] In one embodiment, the airflow path control device is further configured to: in a third operating mode, establish an internal circulation path that draws in air from the indoor air inlet 7 and delivers air to the room via the indoor air outlet 9, and control the filter assembly 5 to be in the filtering state; wherein, in the third operating mode, the first valve 120 is in the open state, the second valve 320 is in the first state to close the communication between the outdoor exhaust outlet 10 and the first part of the air cavity, and the baffle assembly is in the second position to shield the outdoor air inlet 8.

[0081] like Figure 11 As shown, in this embodiment, the third operating mode of the fresh air module is the internal circulation purification mode. When the fresh air module is set to this mode, the airflow path control device performs the following coordinated control on the state of each component:

[0082] First valve 120: Controlled to the open state. This ensures that the air pressurized by the fan can be smoothly returned to the room through the indoor air outlet 9.

[0083] The second valve 320 is controlled to be in the one state. In this state, the passage between the first part of the air cavity and the outdoor exhaust port 10 is closed. The purpose of this is to block the air in the air cavity from being exhausted to the outside, so as to achieve indoor circulation of the air.

[0084] The baffle assembly 640 is moved to the second position, i.e. the position of completely shielding the outdoor air inlet 8. This ensures that the air sucked by the fan is only indoor air, preventing the entry of outdoor air.

[0085] The filter assembly 5 is controlled to be in the filtering state. For example, the folding filter screen 520 is fully unfolded and crosses the air flow path, so as to effectively filter and purify the indoor air sucked into the air cavity.

[0086] Under the above control, the working process of the fresh air module is as follows: after the fan is started, since the baffle assembly 640 shields the outdoor air inlet 8, air can only be sucked into the second part of the air cavity from the indoor air inlet 7. Then, the indoor air flows through the filter assembly 5 in the filtering state, in which particulate matter, pollutants, etc. are intercepted and purified. The purified air enters the first part of the air cavity and is pressurized by the fan. Since the second valve 320 closes the path to the outside, and the first valve 120 is opened to provide a path to the indoor, the purified air is finally sent back to the indoor through the indoor air outlet 9.

[0087] Thus, a complete indoor circulation air flow path is established: indoor air→indoor air inlet 7→air cavity→filter assembly 5 (filtering state)→fan→indoor air outlet 9→indoor.

[0088] In this mode, the fresh air module can continuously circulate and purify the indoor air without air exchange with the outdoor, playing the role of an "air purifier". This mode is particularly suitable for scenarios where the outdoor air quality is poor (such as smog weather), or the user does not want to introduce outdoor air to avoid affecting the indoor temperature, but at the same time wants to improve the cleanliness of the indoor air.

[0089] In an embodiment, the air flow path control device is further configured to, in a fourth working mode, establish a mixed air path that simultaneously sucks air from the indoor air inlet 7 and the outdoor air inlet 8 and delivers air to the indoor through the indoor air outlet 9, and control the filter assembly 5 to be in the filtering state; wherein, in the fourth working mode, the first valve 120 is in the open state, the second valve 320 is in the one state to close the communication between the outdoor exhaust port 10 and the first part of the air cavity, and the baffle assembly is in the at least one intermediate position, so that the indoor air inlet 7 and the outdoor air inlet 8 are both partially open.

[0090] As Figure 12 shown in the above figure, in this embodiment, the fourth working mode of the fresh air module, i.e. the mixed air mode. When the fresh air module is set to this mode, the airflow path control device controls the states of each component as follows:

[0091] The first valve 120 is controlled to be in the open state. This ensures that the mixed and purified air can be smoothly sent into the room through the indoor air outlet 9.

[0092] The second valve 320 is controlled to be in the one state. In this state, the passage between the first part of the air cavity and the outdoor air outlet 10 is closed, while a communication is established from the outdoor air outlet 10 to the air inlet duct 610 and then to the outdoor air inlet 8. The purpose of this is to allow the introduction of outdoor fresh air and prevent all air from being discharged outdoors.

[0093] The baffle assembly 640 is moved to the at least one intermediate position. In this position, the baffle assembly 640 neither completely covers the indoor air inlet 7 nor completely covers the outdoor air inlet 8, so that both air inlets are in a partially open state. By adjusting the specific opening degree of the baffle assembly 640 in the intermediate position, the mixing ratio of indoor return air and outdoor fresh air can be flexibly controlled.

[0094] The filter assembly 5 is controlled to be in the filtering state. For example, the folding filter screen 520 is fully unfolded and crosses the airflow path, so as to uniformly filter and purify all air entering the air cavity, whether it is return air from indoors or fresh air from outdoors.

[0095] Under the above control, the working process of the fresh air module is as follows: after the fan is started, due to the baffle assembly 640 being in the intermediate position, air from indoors enters from the partially open indoor air inlet 7, and at the same time, fresh air from outdoors enters from the outdoor air outlet 10 via the air inlet duct 610 and then from the partially open outdoor air inlet 8. The two air flows converge in the second part of the air cavity. The mixed air is purified together by the filter assembly 5 in the filtering state. The purified mixed air enters the first part of the air cavity, is pressurized by the fan, passes through the open first valve 120, and is sent into the room through the indoor air outlet 9.

[0096] Thus, a complete mixed air flow path is established: indoor air → indoor air inlet 7 and outdoor air → outdoor air outlet 10 → air inlet duct 610 → outdoor air inlet 8 → the two air flows converge in the air cavity → filter assembly 5 (filtering state) → fan → indoor air outlet 9 → room.

[0097] The air mixing mode is particularly useful when the temperature difference between indoor and outdoor is large. By mixing a part of indoor air, the introduced outdoor fresh air can be pre-cooled or pre-heated, thereby buffering the temperature mutation caused by directly introducing outdoor air and improving the comfort of the supply air. At the same time, by adjusting the mixing ratio, the influence on the indoor temperature can be minimized on the premise of ensuring the basic ventilation effect, thereby achieving energy saving.

[0098] In an embodiment, the filter assembly 5 comprises a fixed part, a movable part movable relative to the fixed part, and a filter part connected between the fixed part and the movable part; wherein the filter part is unfolded to the filtering state when the movable part is at a position; and the filter part is folded to the non-filtering state when the movable part is at another position.

[0099] As shown in Figures 6-8 In the embodiment, the fixed part is specifically a fixed housing 510. The fixed housing 510 is fixedly installed on the air duct assembly 6 and serves as a reference component of the entire filter assembly 5, keeping the position unchanged.

[0100] The movable part is specifically a movable housing 530. The movable housing 530 can reciprocate linearly relative to the fixed housing 510.

[0101] The filter part is specifically a folding filter screen 520. One end of the folding filter screen 520 is fixedly connected to the fixed housing 510, and the other end is fixedly connected to the movable housing 530. Due to this connection mode, when the movable housing 530 moves relative to the fixed housing 510, the folding filter screen 520 will change its structure from unfolded to folded.

[0102] Specifically, the working state switching principle of the filter assembly 5 is as follows:

[0103] When the movable part (movable housing 530) moves to a position, for example, a limit position away from the fixed housing 510, it will pull the folding filter screen 520 to make it fully unfold. The unfolded folding filter screen 520 covers the air flow path in the second part of the air cavity horizontally, forcing all the air flowing through this area to pass through the filter screen. At this time, the filter assembly 5 is in the filtering state. This state is suitable for the fresh air mode, the internal circulation mode or the air mixing mode which requires air purification.

[0104] When the movable part (the moving shell 530) moves to another position, for example, close to the side limit position of the fixed shell 510, it will push the folding filter screen 520 to make it fold up. The folded filter screen 520 after folding is compactly located near the side wall of the second part of the air cavity, no longer forming a substantial obstruction to the air flow path, thereby providing an unobstructed passage for air. At this time, the filter assembly 5 is in the non-filtering state. This state is suitable for exhaust mode without filtering, which can effectively prevent the filter screen from being contaminated by the dirty air discharged indoors, thereby prolonging its service life.

[0105] Through the above structural design, the filter assembly 5 of the embodiment can realize the "opening" and "closing" of the filtering function through the displacement of the internal movable part, thereby adapting to the needs of different working modes and achieving the dual goals of efficient filtering and prolonging the service life of consumables.

[0106] In an embodiment, the air duct shell 680 includes a shell plate part and a protruding part arranged at the edge of the shell plate part, and the fixed part is arranged in the slot 660, and the movable part is connected with the guide rail 670 through a sliding block.

[0107] As shown in Figure 7 and Figure 8 In this embodiment, in order to realize the stable installation and smooth movement of the fixed part and the movable part in the filter assembly 5, a structure matched with the air duct shell 680 is arranged on the inner wall of the air duct shell 680.

[0108] Specifically, the air duct shell 680 includes a shell plate part as its main body and a protruding part (not separately marked in the figure) arranged at the edge of the shell plate part. On the protruding part, a slot 660 and a guide rail 670 are respectively arranged, which are used for assembly and guidance with the filter assembly 5. The protruding part here is provided with four, the slot 660 penetrates one of the vertical protruding parts, and the guide rail 670 is arranged on the inner wall of the horizontal protruding part.

[0109] The fixed part of the filter assembly 5, i.e. the fixed shell 510, is arranged in the slot 660. The size of the slot 660 matches the outer shape of the fixed shell 510, and when the fixed shell 510 is inserted into the slot 660, it can be fixed at a predetermined position of the air duct shell 680 by means of bolts and other structures, thereby ensuring that it will not displace during the working process of the module.

[0110] The movable part of the filter assembly 5, i.e. the moving shell 530, is connected with the guide rail 670 through a sliding block. Specifically, a sliding block is arranged on each of the upper and lower ends of the moving shell 530, and the corresponding positions of the upper and lower protrusions are provided with guide rails 670 matched with the sliding blocks. The sliding blocks slide in the guide rails 670, and this matching mode provides accurate guidance for the reciprocating movement of the moving shell 530.

[0111] Through the above structural design, the embodiment not only provides a reliable and easy-to-assemble mounting mode for the filter assembly 5, but also provides structural protection for the smooth and stable movement of the movable part. When installing or replacing the filter assembly 5, the user only needs to insert the fixed part into the slot 660 on the side of the air duct shell 680 and slide the sliding block of the movable part into the guide rail 670, which is simple and fast to operate.

[0112] In the embodiment, in order to realize automatic control of the moving shell 530 in the filter assembly 5 and enable it to reliably move in different working modes, a driving mechanism (not shown in the figure) can be used. The driving mechanism can be a motor-gear-rack driving mechanism. Specifically, the mechanism includes a driving motor fixedly installed on the outer wall or inner wall of the air duct assembly 6, which is uniformly controlled by the airflow path control device of the fresh air module, receives instructions and performs forward or reverse rotation according to the current working mode. The mechanism also includes a transmission assembly, which includes a gear fixedly installed on the output shaft of the driving motor, and a rack fixedly installed on the moving shell 530, with the tooth surface engaged with the gear.

[0113] Taking the example of the driving motor fixedly installed on the outer wall of the air duct assembly 6: a through hole is formed in the side wall of the air duct assembly 6, so that the gear installed on the driving motor outside can pass through the through hole and engage with the rack installed on the moving shell 530 in the second part of the air cavity.

[0114] When the airflow path control device needs to switch the filter assembly 5 to the filtering state, it will issue an instruction to the driving motor to rotate in the first direction. The gear on the output shaft of the motor rotates, driving the rack engaged with it and the entire moving shell 530 away from the fixed shell 510 along the guide rail 670. When the moving shell 530 moves to the preset unfolded end position (which can be determined by a limit switch or motor step calculation), the motor stops rotating, and at this time the folded filter screen 520 is completely unfolded and in the filtering state.

[0115] When the airflow path control device needs to switch the filter assembly 5 to the non-filtering state, it will send a reverse command to the driving motor, which will rotate in the second direction. The gear reverses its rotation, drives the rack and brings the moving shell 530 to fold towards the fixed shell 510 along the guide rail 670. When the moving shell 530 moves to the preset folded end position, the driving motor stops, and the folded filter screen 520 is folded and placed in the non-filtering state, thereby leaving a smooth airflow passage for the exhaust airflow path.

[0116] By using this motor-gear-rack driving mechanism, automatic control of the state switching of the filter assembly 5 can be achieved. Those skilled in the art can understand that, in addition to the motor-gear-rack driving mechanism, other equivalent linear driving methods such as motor-screw-nut mechanisms or electromagnetic push rod mechanisms can also be used.

[0117] In an embodiment, the indoor air inlet 7 and the outdoor air inlet 8 are respectively penetrated through the shell plate part, and the baffle assembly is arranged on the shell plate part.

[0118] In this embodiment, the shell plate part of the air duct housing 680 constitutes the main wall of the air duct assembly 6. The indoor air inlet 7 and the outdoor air inlet 8 are two independent openings, which are penetrated through the shell plate part to provide a passage for indoor air and outdoor air to enter the second part of the air cavity.

[0119] The baffle assembly is movably arranged on the inner side surface of the shell plate part, between the indoor air inlet 7 and the outdoor air inlet 8, for selectively shielding the two air inlets according to the requirements of the working mode.

[0120] The baffle assembly includes a plate-shaped baffle 640, a third driving motor 620 for driving the baffle 640 to move, and a swing rod 630 connecting the motor and the baffle 640.

[0121] As shown in Figure 8 In order to guide the baffle 640 to move linearly smoothly, a sliding groove 650 is also processed on the shell plate part of the air duct housing 680. A part of the structure of the baffle 640 (such as its edge) is accommodated in the sliding groove 650.

[0122] The third driving motor 620 is fixedly installed on the air duct housing 680, and its output shaft is connected to one end of the swing rod 630. The other end of the swing rod 630 is connected to the baffle 640. When the third driving motor 620 rotates under the command of the airflow path control device, it will drive the baffle 640 to move linearly and reciprocally in the sliding groove 650 through the transmission of the swing rod 630, thereby driving the baffle 640 to move left and right in the sliding groove 650.

[0123] By controlling the rotation of the third driving motor 620, the position of the baffle 640 can be controlled, so that it can be moved to completely shield the indoor air inlet 7, completely shield the outdoor air inlet 8, or be at any intermediate position between the two, thereby realizing flexible regulation of the source of the incoming air flow.

[0124] In this embodiment, the indoor air inlet 7 and the outdoor air inlet 8 are integrated on the shell plate part of the air duct shell 680, and the movable baffle assembly 640 is arranged on the shell plate part, so that the fresh air module can realize selection or mixing control of the indoor air flow path and the outdoor air flow path through a single baffle assembly in different working modes, thereby avoiding the problem of air duct complication caused by separately arranging multiple air valves or switching structures, simplifying the overall structural design of the fresh air module, and ensuring the compactness of the overall structure of the fresh air module while realizing flexible switching of the air flow path, facilitating manufacturing, assembly, and maintenance.

[0125] As shown in Figure 13 For the above-mentioned fresh air module, the embodiment of the present application also provides an air conditioning equipment 100, such as a wall-mounted air conditioner, a cabinet air conditioner, or an indoor unit of a central air conditioner. The air conditioning equipment 100, in addition to including a conventional refrigeration / heating system (such as a compressor, a condenser, an evaporator, a throttling device, etc., not shown in the drawings), also integrates the fresh air module 200 described in any of the preceding embodiments.

[0126] In this embodiment, the fresh air module 200 can be integrated as an independent functional module into the indoor unit of the air conditioning equipment 100. Specifically, a mounting cavity is reserved in the indoor unit shell of the air conditioning equipment 100 for accommodating the volute 130, the air duct assembly 6, and other components of the fresh air module 200.

[0127] The indoor interface of the fresh air module 200 is connected to the indoor air circulation air path of the air conditioning equipment 100. Specifically:

[0128] The indoor air outlet 9 can be arranged near the main air outlet of the air conditioning indoor unit or directly communicated with the main air outlet, so that the fresh air or mixed air purified by the fresh air module 200 is sent into the room together with the air treated by the air conditioner;

[0129] The indoor air inlet 7 can be arranged in the return air area of the air conditioning indoor unit, thereby sharing the return air path with the return air outlet of the air conditioner, so that the indoor air can be sucked into the fresh air module 200 for purification or circulation.

[0130] The outdoor exhaust outlet 10 of the fresh air module 200 serves as the only physical interface to the outside, and is used as the fresh air inlet and the indoor waste gas outlet at the same time, thereby realizing the function of single opening and bidirectional ventilation, simplifying the installation process of the air conditioning equipment 100, and reducing the damage to the building structure.

[0131] In terms of control, the main control board of the air conditioning device 100 integrates the air flow path control logic of the fresh air module 200. The user can select to turn on or off the fresh air function and switch between different working modes through the air conditioner remote controller, the machine body panel or the intelligent terminal (such as APP). The main control board sends control instructions to the driving mechanism of the first valve 120, the second valve 320, the baffle assembly 640 and the filter assembly 5 according to the user's instruction or the air quality monitoring signal, so as to realize the functions of fresh air, exhaust air, internal circulation and mixed air.

[0132] Therefore, the air conditioning device 100 of the embodiment has the functions of temperature regulation, ventilation and air purification by integrating the fresh air module 200, and can provide a comfortable and clean indoor air environment for the user.

[0133] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fresh air module, characterized in that The air flow path control device is configured to: in a first working mode, establish a fresh air flow path that draws air from the outdoor interface, delivers the air to indoors via the indoor interface, and control the filter assembly to be in the filtering state; and in a second working mode, establish an exhaust air flow path that draws air from the indoor interface, discharges the air to outdoors via the outdoor interface, and control the filter assembly to be in the non-filtering state so that the filter assembly avoids the air on the exhaust air flow path. Further comprising: a volute in which a first part of the air cavity is formed, and in which the air fan is accommodated; and an air duct assembly connected with the volute to form a second part of the air cavity, in which the filter assembly is accommodated, and the second part of the air cavity communicates with the first part of the air cavity. The indoor interface comprises an indoor air inlet on the air duct assembly and an indoor air outlet on the volute; and the outdoor interface comprises an outdoor air inlet on the air duct assembly and an outdoor air outlet on the volute. The air duct assembly comprises an air duct shell and an air inlet pipe, and the indoor air inlet and the outdoor air inlet are respectively arranged on the air duct shell; the air duct shell is connected with the volute, and the outdoor air outlet communicates with the outdoor air inlet through the air inlet pipe. The air flow path control device comprises:

2. Fresh air module according to claim 1, characterized in that a first valve arranged at the indoor air outlet; a second valve configured to, in one state, establish communication between the outdoor air outlet and the outdoor air inlet, and close the communication between the outdoor air outlet and the first part of the air cavity; and in another state, establish communication between the outdoor air outlet and the first part of the air cavity, and close the communication between the outdoor air outlet and the outdoor air inlet; and a baffle assembly movably arranged between the indoor air inlet and the outdoor air inlet, and configured to move between a first position that shields the indoor air inlet, a second position that shields the outdoor air inlet, and at least one intermediate position between the first position and the second position. The air flow path control device is further configured to, in a third working mode, establish an indoor circulation path that draws air from the indoor air inlet, delivers the air to indoors via the indoor air outlet, and control the filter assembly to be in the filtering state; wherein in the third working mode, the first valve is in an open state, the second valve is in the one state to close the communication between the outdoor air outlet and the first part of the air cavity, and the baffle assembly is in the second position to shield the outdoor air inlet.

3. Fresh air module according to claim 2, characterized in that ​ 4. Fresh air module according to claim 3, characterized in that ​ 5. Fresh air module according to claim 4, characterized in that ​ ​ ​ ​ 6. Fresh air module according to claim 5, characterized in that ​ 7. Fresh air module according to claim 5, characterized in that The air flow path control device is further configured to, in a fourth working mode, establish a mixed air flow path in which air is drawn in from the indoor air inlet and the outdoor air inlet simultaneously and delivered to the indoor space via the indoor air outlet, and control the filter assembly to be in the filtering state; wherein in the fourth working mode, the first valve is in an open state, the second valve is in the first state to close the communication between the outdoor air outlet and the first part of the air cavity, and the baffle assembly is in the at least one intermediate position so that the indoor air inlet and the outdoor air inlet are both partially open.

8. Fresh air module according to claim 4, characterized in that The filter assembly comprises a fixed part, a movable part movable relative to the fixed part, and a filter part connected between the fixed part and the movable part; wherein when the movable part is in a position, the filter part is unfolded to be in the filtering state; and when the movable part is in another position, the filter part is folded to be in the non-filtering state.

9. Fresh air module according to claim 8, characterized in that The air duct shell comprises a shell plate part and a protruding part arranged at the edge of the shell plate part, the protruding part is respectively provided with a slot and a guide rail, the fixed part is arranged in the slot, and the movable part is connected with the guide rail through a sliding block.

10. An air conditioning apparatus characterized by comprising: A fresh air module comprising any one of claims 1 to 9.

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