Air treatment device and electrical module

Abstract

The invention provides an air treatment apparatus and an electrical module. The opening is formed in the position, corresponding to the heating module in the electrical component box, of the electrical component box, hot airflow caused by the heating module in the electrical component box can be exhausted through the opening and is exhausted out of the air treatment equipment along with return airflow, and the heat dissipation effect of electrical components in the electrical component box is improved; and the electrical safety and performance of the air treatment equipment are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air treatment, in particular to an air treatment device and an electrical module. BACKGROUND

[0002] With the continuous progress of science and technology and the improvement of living standards, people's requirements for living environment are also getting higher and higher, and various air treatment devices are gradually widely used. For example, in recent years, air exchange devices are widely used. Fresh outdoor air is introduced through the air exchange device to improve indoor air quality and improve user comfort.

[0003] In some air treatment devices, for example, a fan is arranged inside the shell of the air exchange device, and a driving circuit for driving the fan is arranged in the fan; in addition, an electrical component box for accommodating electrical components is also arranged in the shell of the air exchange device.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the present application and facilitating the understanding of those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art only because it is described in the background section of the present application. SUMMARY

[0005] The inventor found that in the existing air treatment device, the electrical component box arranged inside the air treatment device does not consider the heat dissipation requirement, which may result in poor heat dissipation effect of the electrical component box and the electrical components inside, affecting the electrical safety and performance of the electrical components and even the entire air treatment device.

[0006] In order to solve at least one of the above problems, the embodiments of the present application provide an air treatment device and an electrical module, which can improve the heat dissipation effect of the electrical components in the electrical component box, thereby ensuring the electrical safety and performance of the air treatment device.

[0007] According to one aspect of the embodiments of the present application, an air treatment device is provided, which comprises: a shell having a side wall, a fresh air inlet, an air supply inlet, an air return inlet and an air exhaust outlet are arranged on the side wall of the shell; at least one fan arranged in the shell; an electrical component box, the inside of the electrical component box accommodating electrical components, the electrical component box being arranged in the shell close to the air return inlet, the electrical components comprising a circuit board and a heat generating module arranged on the circuit board, at least one opening being arranged on the electrical component box, the opening being arranged at least at a position corresponding to the heat generating module.

[0008] One of the beneficial effects of the embodiments of the present application is that:

[0009] By setting an opening at a position corresponding to the heating module in the electrical component box, the hot air flow caused by the heating module in the electrical component box can be discharged through the opening and discharged to the outside of the air handling equipment along with the return air flow, improving the heat dissipation effect of the electrical components in the electrical component box and ensuring the electrical safety and performance of the air handling equipment.

[0010] Further, the heating module includes a fan drive circuit, so that the fan drive circuit is externally arranged in the electrical component box, facilitating real-time detection of the motor parameters of the fan, so that the motor parameters of the fan can be conveniently and accurately detected, both realizing real-time monitoring of the fan itself, ensuring performance, strengthening protection of the fan and improving service life, and realizing accurate control in cooperation with different functions of the air handling equipment.

[0011] Further, by setting an opening on the electrical component box at a position corresponding to the fan drive circuit, the hot air flow caused by the fan drive circuit with large heat in the electrical component box can be discharged through the opening and discharged to the outside of the air handling equipment along with the return air flow, improving the heat dissipation effect of the electrical components in the electrical component box and ensuring the electrical safety and performance of the air handling equipment.

[0012] Further, the opening is arranged on the cover of the electrical component box closer to the return air inlet than the box body, which is conducive to the discharge of the hot air flow to the outside of the air handling equipment along with the return air flow, further improving the heat dissipation effect.

[0013] Further, the positions where the supply fan drive circuit and the return fan drive circuit are located are both provided with openings, which further improves the heat dissipation effect and ensures electrical safety.

[0014] Further, for different models or different power or different load connected reactors, the setting position of the reactor in the electrical component box can be determined according to the size of the heat generated by the reactor.

[0015] For example, when the heat generated by some models or high-power or large-load connected reactors is large, the reactor is arranged on the side of the circuit board away from the return air inlet, i.e. the downstream side of the air flow, and an opening is arranged correspondingly, which is conducive to the heat dissipation of the reactor and the miniaturization of the device, further improving the overall heat dissipation effect.

[0016] For example, when the heat generated by some models or low-power or small-load connected reactors is small, the reactor is arranged on the side of the circuit board close to the return air inlet, i.e. the upstream side of the air flow, which is conducive to the heat dissipation of the components with large heat on the circuit board, further improving the overall heat dissipation effect.

[0017] Further, for the case that the main control circuit board (first circuit board) and the fan drive circuit board (second circuit board) provided with the fan drive circuit are not integrally arranged,

[0018] For example, when the reactor of some models or high power or connected to a larger load generates more heat, the reactor and the fan driving circuit board are arranged on the side of the main control circuit board away from the return air inlet, i.e. the downstream side of the air flow, and an opening is arranged correspondingly, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0019] For example, when the reactor of some models or low power or connected to a smaller load generates less heat, the fan driving circuit board is arranged on the side of the main control circuit board away from the return air inlet, i.e. the downstream side of the air flow, and the reactor is arranged on the side of the main control circuit board close to the return air inlet, i.e. the upstream side of the air flow, which is beneficial to the heat dissipation of the fan driving circuit with large heat on the fan driving circuit board, and further improves the overall heat dissipation effect.

[0020] Further, the fan driving circuit board (second circuit board) is arranged on the side of the main control circuit board (first circuit board) away from the return air inlet, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the fan driving circuit. In addition, the supply fan driving circuit and the return fan driving circuit can be arranged on the same circuit board or can be arranged on two circuit boards respectively, which improves the flexibility of circuit arrangement.

[0021] Further, the circuit board in the electrical component box is also provided with a strong current circuit and a weak current circuit, and the strong current circuit is arranged below the weak current circuit. In this way, the hot air generated by the strong current circuit rises and dissipates heat during the rising process, avoiding the accumulation of hot air at the top and further improving the heat dissipation effect. In addition, the strong and weak current separation is realized, and the anti-interference performance is improved.

[0022] Further, the edge of the opening on the upstream side of the air flow direction is provided with a baffle extending to the outside of the electrical component box. In this way, on the one hand, it can prevent the condensate water or dust, particulate matter inside the air handling equipment from entering the inside of the electrical component box, which may cause electrical safety problems. On the other hand, it can guide the flow direction of the return air flow, further improving the heat dissipation effect.

[0023] Further, the baffle is arranged on the side close to the return air inlet of the opening, and the baffle extends away from the return air inlet, so as to further prevent the condensate water or dust, particulate matter from entering the inside of the electrical component box and better guide the return air flow, improve the heat dissipation effect. Moreover, in the height direction, whether the air handling equipment is installed in the forward direction or the reverse direction, the baffle can effectively prevent the condensate water or dust, particulate matter from entering the inside of the electrical component box and better guide the return air flow, improve the heat dissipation effect.

[0024] Further, the electrical component box is provided with a plurality of openings, the openings are long strip-shaped, and the baffle is arranged on at least one long side of the opening. In this way, the box cover structure is simple, the heat dissipation effect of the opening can be further improved, and the effect of preventing condensed water, dust, particulate matter and the like from entering the interior of the electrical component box and guiding the return air flow can be further improved.

[0025] Further, the baffle is a straight plate or an arc-shaped plate, so that the baffle can be freely designed according to actual conditions, the manufacturing efficiency is improved, and the effect of preventing condensed water, dust, particulate matter and the like from entering the interior of the electrical component box and guiding the return air flow can be further improved.

[0026] Further, the electrical component box is arranged at a corner of the shell close to the return air inlet. In this way, other components inside the air handling equipment can be reasonably arranged, the electrical component box is arranged in the corner area with less air flow, the influence on the air flow inside the air handling equipment can be reduced, the pressure loss of the whole machine is reduced, and the miniaturization of the whole machine is facilitated.

[0027] Further, the side of the box body of the electrical component box is provided with a hole portion on the side away from the return air inlet. In this way, the passing and arrangement of wires are facilitated, the maintenance through the maintenance opening is facilitated, the separation of strong current and weak current can be realized, the electrical safety is further ensured, the hot air flow in the electrical component box can also be discharged through the hole portion and discharged outside the equipment along with the return air flow, and the heat dissipation effect is further improved.

[0028] Further, the air handling equipment further comprises a clamping portion and a fixing component arranged in the shell, one side of the electrical component box is fixed to the side wall of the shell through the fixing component, and the other side is clamped and fixed through the clamping portion. In this way, the use of the fixing component can be reduced, and the disassembly and maintenance of the electrical component box are facilitated.

[0029] Further, the electrical component box has a gap between the electrical component box and the side wall in the state of being fixed to the side wall of the shell through the fixing component. In this way, the space formed by the gap can accommodate the part (for example, the end of the circuit board fixing buckle and the fixing screw) of some components in the electrical component box, and a heat dissipation space can also be formed, and the heat dissipation effect is further improved.

[0030] Further, the air handling equipment further comprises a limiting portion arranged between the electrical component box and the top plate of the shell or arranged between the electrical component box and the bottom plate of the shell. The movement of the electrical component box in the height direction in various installation and maintenance scenes and during use can be prevented, and the stability of the equipment operation can be ensured.

[0031] In addition, for example, the limiting portion is arranged at a position corresponding to the clamping portion. There is no fastening mechanism at this position, the limiting portion can be matched with the clamping portion to clamp and fix the electrical component box, the fixing structure is simple, and the disassembly and maintenance are convenient.

[0032] Further, the limiting part is arranged at the corner in the shell, so that the influence on the air flow and heat dissipation inside the air treatment device can be reduced.

[0033] Further, at least one of the power line and the wire of the fan is provided with an electromagnetic interference suppression element, such as a magnetic ring or a filter, so that the electromagnetic interference in the shell can be reduced, and the performance of the device is ensured.

[0034] According to another aspect of the embodiment of the present application, an electrical module in an air treatment device is provided, the electrical module comprising an electrical component, the electrical component comprising a circuit board and a strong current circuit and a weak current circuit arranged on the circuit board, in a state where the electrical module is arranged in the air treatment device, the strong current circuit is arranged below the weak current circuit.

[0035] One of the beneficial effects of the embodiment of the present application is that:

[0036] Since the strong current circuit is arranged below the weak current circuit, the hot air flow generated by the strong current circuit rises and dissipates heat during the rising process, avoiding the hot air flow from gathering at the top, improving the heat dissipation effect and ensuring the electrical safety and performance of the air treatment device. In addition, the separation of strong and weak current is realized, and the anti-interference performance is improved.

[0037] Further, the fan driving circuit is arranged on the circuit board, and the fan driving circuit is arranged on the side of the strong current circuit and the weak current circuit away from the air return port of the air treatment device, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the fan driving circuit. The heat generated by the fan driving circuit can flow away with the return air flow, further improving the overall heat dissipation effect.

[0038] Further, the electrical component further comprises a reactor, and for reactors of different models or different powers or connected to different loads, the setting position of the reactor can be determined according to the size of the heat generated by the reactor.

[0039] For example, when the heat generated by some models or high-power or connected to large loads is large, the reactor is arranged on the side of the circuit board away from the air return port, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and the position of the reactor is reasonably arranged, further improving the overall heat dissipation effect.

[0040] For example, when the heat generated by some models or low-power or connected to small loads is small, the reactor is arranged on the side of the circuit board close to the air return port, i.e. the upstream side of the air flow, which is beneficial to the heat dissipation of the components with large heat on the circuit board, further improving the overall heat dissipation effect.

[0041] Further, for the case that the main control circuit board (the first circuit board) and the fan drive circuit board (the second circuit board) provided with the fan drive circuit are not integrally arranged,

[0042] For example, when the reactor of some models or high power or connected to a larger load generates more heat, the reactor and the fan drive circuit board are arranged on the side of the main control circuit board away from the return air outlet, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0043] For example, when the reactor of some models or low power or connected to a smaller load generates less heat, the fan drive circuit board is arranged on the side of the main control circuit board away from the return air outlet, i.e. the downstream side of the air flow, and the reactor is arranged on the side of the main control circuit board close to the return air outlet, i.e. the upstream side of the air flow, which is beneficial to the heat dissipation of the fan drive circuit on the fan drive circuit board, and further improves the overall heat dissipation effect.

[0044] Further, the second circuit board is arranged on the side of the first circuit board away from the return air outlet, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the fan drive circuit on the second circuit board. In addition, the supply fan drive circuit and the return fan drive circuit can be arranged on the same circuit board or can be divided into two circuit boards and arranged separately, which improves the flexibility of circuit arrangement.

[0045] Further, the above-mentioned electrical components are accommodated in the electrical component box, and at least one opening is arranged on the electrical component box, so that the hot air flow generated by the electrical components inside the box body can be discharged through the opening, which can further improve the heat dissipation effect.

[0046] Further, the opening is arranged at least at a position corresponding to the fan drive circuit, so that the hot air flow generated by the fan drive circuit can be discharged through the opening, which further improves the heat dissipation effect.

[0047] The specific embodiments of the present application are disclosed in detail in the following description and drawings, and indicate the ways in which the principles of the present application can be employed. It is understood that the embodiments of the present application are not limited in scope thereof by the specific embodiments described. Embodiments of the present application include many changes, modifications and equivalents.

[0048] The feature information described and shown for one embodiment can be used in the same or similar way in one or more other embodiments, combined with the feature information in other embodiments, or replaced by the feature information in other embodiments.

[0049] It should be emphasized that the term "comprises / comprising" used herein refers to the presence of the feature information, the whole, the step or the component, but does not exclude the presence or addition of one or more other feature information, the whole, the step or the component. BRIEF DESCRIPTION OF DRAWINGS

[0050] Many aspects of the application can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. For purposes of clarity, not every component is labeled in every drawing. In some instances, a component can be enlarged for the purpose of illustration and discussion. Elements and features of one or more embodiments of the application are combinable with elements and features of one or more other embodiments of the application. In the drawings:

[0051] In the drawings:

[0052] Figure 1 is a top view of one embodiment of the internal structure of an air handling device of an embodiment of the application;

[0053] Figure 2 is a top view of another embodiment of the internal structure of an air handling device of an embodiment of the application;

[0054] Figure 3 is a top view of another view of one embodiment of the internal structure of an air handling device of an embodiment of the application;

[0055] Figure 4 is Figure 3 is an enlarged view of a portion of the structure of the electrical component box shown in

[0056] Figure 5 is a schematic view of one embodiment of an electrical component of an embodiment of the application;

[0057] Figure 6 is a schematic view of another embodiment of an electrical component of an embodiment of the application;

[0058] Figure 7 is a schematic view of yet another embodiment of an electrical component of an embodiment of the application;

[0059] Figure 8 is a schematic view of yet another embodiment of an electrical component of an embodiment of the application;

[0060] Figure 9 is a perspective view of one embodiment of an electrical component box of an embodiment of the application;

[0061] Figure 10 is Figure 9 is a perspective view of another view of a portion of the structure of the electrical component box shown in

[0062] Figure 11is a perspective view of another angle of one embodiment of the electrical component box of the present application;

[0063] Figure 12 is a front view of another embodiment of the electrical component box of the present application;

[0064] Figure 13 is a perspective view of another angle of one embodiment of the electrical component box of the present application;

[0065] Figure 14 is a top view of another embodiment of the internal structure of the air handling device of the present application;

[0066] Figure 15 is an enlarged view of the partial structure including the exhaust fan 132;

[0067] Figure 16 is an enlarged view of the partial structure including the supply fan 131;

[0068] Figure 17 is a schematic view of another embodiment of the electrical component box of the present application;

[0069] Figure 18 is a top view of another embodiment of the internal structure of the air handling device of the present application;

[0070] Figure 19 is a schematic view of one embodiment of the electrical component of the present application;

[0071] Figure 20 is a schematic view of another embodiment of the electrical component of the present application;

[0072] Figure 21 is a schematic view of another embodiment of the electrical component of the present application. DETAILED DESCRIPTION

[0073] The preferred embodiments of the present application will be described below with reference to the accompanying drawings.

[0074] Embodiment 1

[0075] The present application provides an air handling device.

[0076] In some embodiments, the air handling device is a ventilation device, for example, a ventilation device having a heat exchange unit. The internal structure of the air handling device will be described below by way of example with reference to a ventilation device. However, the embodiments of the present application can also be applied to other air handling devices other than ventilation devices.

[0077] Figure 1is a top view of one embodiment of the internal structure of the air handling device of the present application. In addition, Figure 1 is a rear view of the internal structure of the air handling device, with the top of the air handling device omitted.

[0078] In the embodiments of the present application, Figure 1 and other drawings, the x direction represents the length direction of the air handling device, the y direction represents the width direction of the air handling device, and the z direction represents the height direction of the air handling device.

[0079] As shown in Figure 1 , the air handling device 100 includes a housing 110 and an electrical component box 120 disposed in the housing 110, the housing 110 having a side wall 111, on which a fresh air inlet 113, an air supply inlet 114, an air return inlet 115, and an air exhaust outlet 116 are disposed.

[0080] In some embodiments, the housing 110 also has a bottom plate 112, a top plate Figure 1 (not shown in the figure). In this way, a closed space is formed inside the housing 110 by the bottom plate, the top plate, and the side wall. Among them, the space inside the housing 110 includes a fresh air cavity A connected to the fresh air inlet 113, an air supply cavity B connected to the air supply inlet 114, an air return cavity C connected to the air return inlet 115, and an air exhaust cavity D connected to the air exhaust outlet 116.

[0081] In some embodiments, the air handling device 100 has an external circulation mode and an internal circulation mode.

[0082] When the air handling device 100 is in the external circulation mode, as shown by the dashed arrows in Figure 1 , an air supply path is formed between the fresh air inlet 113 and the air supply inlet 114, through which the fresh air flow is introduced into the room; an air exhaust path is formed between the air return inlet 115 and the air exhaust outlet 116, through which the air return flow is exhausted outside the room;

[0083] When the air handling device 100 is in the internal circulation mode, as shown by the dashed arrows in Figure 1 , an internal circulation path is formed between the air return inlet 115 and the air supply inlet 114, through which the air flow in the room is circulated.

[0084] In addition, Figure 1 the dashed arrows in the figure schematically represent the above-mentioned paths, and are not a limitation on the relevant paths.

[0085] In some embodiments, the air handling device 100 includes at least one fan, for example, as shown in Figure 1As shown, the air handling unit 100 includes a supply fan 131 and an exhaust fan 132. The supply fan 131 is used to form an airflow to introduce fresh air from the outside through the fresh air inlet 113 or to introduce return air from the room through the return air inlet 115. The exhaust fan 132 is used to form an airflow to exhaust air to the outside.

[0086] In some embodiments, such as Figure 1 As shown, the air handling unit 100 may further include a heat exchange unit 140 for exchanging heat with the air passing through the heat exchange unit 140. For example, heating the air passing through the heat exchange unit 140.

[0087] For example, the heat exchange element 140 is a heat exchange core. The heat exchange core and the partition together define the air supply path and the air exhaust path. The heat exchange core is formed by multiple heat exchange elements stacked together. Adjacent heat exchange elements are connected to the air supply path and the air exhaust path, respectively. When the fresh air and the indoor return air pass through the adjacent heat exchange elements, they exchange heat or moisture through heat exchange plates (such as paper, moisture-permeable membrane, etc.).

[0088] For example, the heat exchange unit 140 is installed inside the housing by a support component, which is sealed to the partition component to improve the sealing performance and ensure that the airflow in the supply air path and the exhaust air path does not cross.

[0089] For example, the support component can be directly fixed to the housing, or it can be fixed by pre-embedding sheet metal parts in the partition component.

[0090] For example, the support component may have a guide rail that engages with the heat exchange core, or it may have a filter slot integrally formed to facilitate the placement of a filter near the heat exchange core.

[0091] Specifically, primary filters are installed on the side of the heat exchange core near the fresh air inlet and the side near the return air inlet, respectively. The primary filters are locked in place by filter slots on the support components. The structure is simple and easy to install and maintain.

[0092] In some embodiments, such as Figure 1As shown, the air handling unit 100 may further include a first damper assembly 151, a second damper assembly 152, and a damper bracket 153. The first damper assembly 151 is disposed between the return air inlet 115 and the supply air inlet 114 and is used to open or close the internal circulation path. The first damper assembly 151 has a frame, and a first valve plate is disposed inside the frame. A first opening is formed on the frame, and a second opening is formed on the damper bracket 153. The first valve plate can switch between the first opening and the second opening to close or open the first opening (close or open the internal circulation path) or the second opening (close or open the exhaust path). In addition, the second damper assembly 152 is disposed inside the fresh air inlet. The second damper assembly 152 includes a second valve plate, which is used to close or open the fresh air inlet 113.

[0093] like Figure 1 As shown, both the first air valve assembly 151 and the second air valve assembly 152 are driven by motors, such as DC motors. They can not only adjust the opening and closing of the air valve assembly, but also adjust the opening degree of the air valve assembly, resulting in a high degree of automation.

[0094] In some embodiments, such as Figure 1 As shown, the air handling unit 100 may further include a heat-insulating cavity (which may be an inner shell adapted to the housing) disposed inside the housing. The heat-insulating cavity is provided with partitioning components, such as a first partitioning component 161 and a second partitioning component 162, for isolating airflows along different paths within the housing 110. For example, the partitioning components (e.g., the first partitioning component 161 and the second partitioning component 162) may be integrally formed with the heat-insulating cavity.

[0095] For example, a wire-passing groove can be formed on the partition (e.g., the first partition 161 and the second partition 162), or sheet metal can be pre-embedded in the wall of the heat insulation cavity for fixing the wire-passing clip.

[0096] Alternatively, a heat-insulating cavity may not be provided; sealing and heat insulation can be achieved by applying elastic or soft material to the inner surface of the housing and the surfaces of the separating components (e.g., the first separating component 161 and the second separating component 162). In some embodiments, such as Figure 1 As shown, the air handling unit 100 also includes a filter 170 disposed on the side of the heat exchange core near the air outlet. This filter can be any one of a PM2.5 filter, activated carbon filter, electrostatic precipitator filter, or formaldehyde removal filter. The filter can be, for example... Figure 1 The filter can be arranged in a semi-enclosed L-shape, C-shape, or even a straight line to form a filter. This arrangement ensures the cleanliness of the air supplied to the room while making efficient use of the internal space of the equipment, which is beneficial for miniaturization.

[0097] like Figure 1As shown, filters are installed upstream and downstream of the heat exchange core along the air supply path. Alternatively, the filters can be integrated and installed on the upstream or downstream side of the heat exchange core for easy installation and maintenance.

[0098] In some embodiments, such as Figure 1 and Figure 3 As shown, the air handling unit 100 may further include a first sensor assembly 181 and a second sensor assembly 182. For example, the first sensor assembly 181 and the second sensor assembly 182 may include at least two of a temperature sensor, a humidity sensor, a CO2 sensor, an odor sensor, a TVOC sensor, and a PM2.5 sensor. The first sensor assembly 181 detects the temperature, humidity, and air quality (e.g., particulate matter concentration) of the air in the supply air path, and the second sensor assembly 182 detects the temperature, humidity, and air quality (e.g., particulate matter concentration) of the air in the exhaust air path. The operating mode and operating parameters of the air handling unit can be adjusted according to the detection results of the sensor assemblies.

[0099] The above has been approved. Figure 1 The internal structure of the air handling unit 100 has been described exemplarily. However, the air handling unit 100 may not include all of the above-described components, or it may include... Figure 1 Components not shown in the diagram.

[0100] In some embodiments, the interior of the electrical component box 120 houses electrical components, which may be at least one electrical component for controlling or driving components within the air handling equipment 100. For example, the electrical components housed inside the electrical component box 120 include, but are not limited to, circuit boards. In addition, various modules and components may be provided on the circuit board, such as two drive circuits for driving the motor in the supply fan 131 and the motor in the exhaust fan 132, respectively.

[0101] In some embodiments, the motor drive circuit is integrated with the main control circuit board. For example, one or more of the following circuits (modules) are provided on the circuit board: power supply circuit (power module), control circuit (control module), detection circuit (detection module), communication circuit (communication module), motor drive circuit (motor drive module), and other circuits (other modules).

[0102] Figure 2 This is a top view of another embodiment of the internal structure of the air handling equipment according to an embodiment of the present invention. Figure 2 As shown, in the air handling unit 100', a first air valve assembly 151 is disposed between the return air inlet 115 and the fresh air inlet 113, for opening or closing the internal circulation path (e.g., Figure 2(Selected as shown by the dotted arrow), the first air valve assembly 151 has a frame, within which a first valve plate is provided. An opening is formed on the frame, and the first valve plate is used to close or open the opening. When the opening is open, the internal circulation path is open, and the internal circulation airflow passes through the heat exchange unit 140 (e.g., heat exchange core) before being sent into the room from the air outlet 114. Additionally, the second air valve assembly 152 is located outside the fresh air inlet, and includes a second valve plate used to close or open the fresh air inlet 113. Furthermore, as... Figure 2 As shown by the dashed arrows, an air supply path is formed between the fresh air inlet 113 and the air outlet 114, passing through the heat exchange unit 140 (e.g., heat exchange core), through which fresh air is introduced into the room; an exhaust air path is formed between the return air inlet 115 and the exhaust air outlet 116, passing through the heat exchange unit 140 (e.g., heat exchange core), through which return air is exhausted to the outside.

[0103] In addition, such as Figure 2 As shown, an integrated filter 171 is provided on the side of the heat exchange unit 140 (e.g., heat exchange core) near the fresh air inlet 113, and a primary filter 172 is provided on the side of the heat exchange unit 140 (e.g., heat exchange core) near the air outlet 114.

[0104] Figure 2 Other components can be referenced. Figure 1 The relevant details are omitted here. Furthermore, the air handling unit 100' may not include all of the aforementioned components, or it may include... Figure 2 Components not shown in the diagram.

[0105] Figure 3 This is a top view from another perspective of one embodiment of the internal structure of the air handling equipment according to an embodiment of the present invention. Figure 3 The structure shown is Figure 1 The same applies; for specific components, please refer to the above. Figure 1 The description will not be repeated here.

[0106] like Figure 1 and Figure 3 As shown, the electrical component box 120 is located inside the return air cavity, specifically within the housing 110 near the return air inlet 115. In other words, the electrical component box 120 is positioned adjacent to the return air inlet 115, for example, in a corner of the housing 110 near the return air inlet 115. This allows for a more rational layout of other components inside the air handling unit 100. Utilizing a corner area with low airflow for the electrical component box reduces the impact on the airflow inside the air handling unit 100, lowers overall pressure loss, and facilitates miniaturization of the entire unit.

[0107] Figure 4 yes Figure 3An enlarged view of a partial structure including the electrical component box.

[0108] As shown in Figure 4 , Figure 3 and Figure 1 , the length direction of the electrical component box 120 is the x direction, the width direction of the electrical component box 120 is the z direction, and the thickness (height) direction of the electrical component box 120 is the y direction. The width of the electrical component box 120 is smaller than the height of the shell of the air handling device.

[0109] As shown in Figure 4 and Figure 3 , the electrical component box 120 includes a box body 121 and a box cover 122, and the box cover 122 is closer to the return air inlet 115 than the box body 121, for example, in the thickness (height) direction (y direction) of the electrical component box 120, the box cover 122 is closer to the return air inlet 115 than the box body 121. The back of the box body 121 of the electrical component box 120 is opposite to the side wall 111.

[0110] As shown in Figure 4 , at least one opening 123 is provided on the box cover 122.

[0111] In some embodiments, the electrical components in the electrical component box 120 include a circuit board and a heat generating module provided on the circuit board, and the opening 123 is provided at least at a position corresponding to the heat generating module. In this way, the hot air flow caused by the heat generating module in the electrical component box can be discharged through the opening and discharged to the outside of the air handling device along with the return air flow, improving the heat dissipation effect of the electrical components in the electrical component box and ensuring the electrical safety and performance of the air handling device.

[0112] For example, the heat generating module includes a driving circuit of the fan, and the opening 123 is provided at least at a position corresponding to the driving circuit of the fan.

[0113] In this way, the fan driving circuit is externally provided and arranged in the electrical component box 120, which facilitates real-time detection of the motor parameters of the fan, so that the motor parameters of the fan, such as the temperature, current and voltage of the motor, can be conveniently and accurately detected, the real-time monitoring of the fan itself is realized, the performance is ensured, the protection of the fan is strengthened, and the service life is improved; it can also cooperate with different functions of the air handling device to realize accurate control, for example, to realize constant air volume control and automatic adjustment of air volume under different static pressure conditions; in some embodiments, the fan driving circuit includes an MCU (main chip), a driving module, and capacitors, resistors and other components. In addition, the fan driving circuit can also include other electronic components, and the embodiments of the present application do not limit this.

[0114] In some embodiments, the fan driving circuit and the main control circuit board are integrally arranged, or can be separately arranged.

[0115] In some embodiments, the two fan driving circuits can be integrally arranged or separately arranged.

[0116] In some embodiments, the main heat generating module in the fan driving circuit is a driving module, for example, the driving module can be an IPM module, or the driving module includes an IGBT and a MOS tube.

[0117] In some embodiments, the fan driving circuit includes a supply fan driving circuit and an exhaust fan driving circuit, and the supply fan driving circuit and the exhaust fan driving circuit can be controlled respectively.

[0118] For example, a first control instruction is generated based on the detection data of the supply fan, and the supply fan driving circuit is controlled according to the first control instruction, so as to drive the motor of the supply fan; and a second control instruction is generated based on the detection data of the exhaust fan, and the exhaust fan driving circuit is controlled, so as to drive the motor of the exhaust fan.

[0119] In this way, mutual interference can be avoided, and the operation stability of the supply fan and the exhaust fan can be improved; and the supply fan and the exhaust fan can be flexibly controlled according to actual conditions, and the overall performance of the air treatment equipment can be further improved.

[0120] In some embodiments, the supply fan driving circuit and the exhaust fan driving circuit can be controlled in linkage. For example, a control instruction is generated based on the detection data of the supply fan, and the exhaust fan driving circuit is controlled according to the control instruction, that is, the motor of the exhaust fan is driven, and the operation parameter of the exhaust fan is adjusted.

[0121] In this way, the control precision can be improved, and the overall performance of the air treatment equipment can be further improved.

[0122] In addition, by arranging the opening 123 on the electrical component box 120 at a position corresponding to the fan driving circuit, the hot air flow caused by the fan driving circuit with large heat generation in the electrical component box can be discharged through the opening 123 and discharged to the outside of the air treatment equipment along with the return air flow, thereby improving the heat dissipation effect of the electrical components in the electrical component box 120 and ensuring the electrical safety and performance of the air treatment equipment.

[0123] Further, the opening 123 is arranged on the box cover 122 of the electrical component box 120, which is closer to the return air inlet 115 than the box body 121, which is conducive to discharging the hot air flow to the outside of the air treatment equipment along with the return air flow, thereby further improving the heat dissipation effect.

[0124] In some embodiments, the driving circuit of the supply fan 131 and the driving circuit of the exhaust fan 132 are both arranged in the electrical component box 120, and the opening 123 is arranged at least at positions corresponding to the driving circuit of the supply fan 131 and the driving circuit of the exhaust fan 132. In this way, the heat dissipation effect is further improved, and the electrical safety is ensured.

[0125] For example, in the case that the electric reactor generates a large amount of heat, the above-mentioned heat generating module further comprises the electric reactor.

[0126] In some embodiments, the circuit board further comprises a strong current circuit and a weak current circuit, and the strong current circuit is arranged below the weak current circuit. In this way, the hot air generated by the strong current circuit rises and dissipates heat during the rising process, avoiding the accumulation of hot air at the top, improving the heat dissipation effect, and ensuring the electrical safety and performance of the air handling equipment. In addition, the separation of strong and weak currents is realized, and the anti-interference performance is improved.

[0127] For example, the strong current circuit comprises an electromagnetic interference suppression circuit and a rectifier-inverter circuit; the electromagnetic interference suppression circuit comprises common mode inductors and other components, and the rectifier-inverter circuit comprises capacitors, rectifier bridges and other components, wherein the capacitors are used for filtering and energy storage of the power supply circuit, etc.; in addition, small capacitors can be selected to realize the miniaturization of the electrical structure.

[0128] For example, the weak current circuit comprises a control circuit, a detection circuit, a communication circuit, etc.

[0129] In some embodiments, the power supply circuit is provided with a surge protection component, for example, a relay is arranged at the output end of the power supply circuit to prevent the generation of surge voltage and surge current, ensuring electrical safety.

[0130] In some embodiments, the electrical components in the electrical component box further comprise an electric reactor,

[0131] For example, the fan driving circuit on the circuit board is farther away from the return air inlet than other circuits, and the electric reactor is arranged on the side of the circuit board away from the return air inlet, and the opening is also arranged at a position corresponding to the electric reactor,

[0132] Alternatively, the fan driving circuit on the circuit board is farther away from the return air inlet than other circuits, and the electric reactor is arranged on the side of the circuit board close to the return air inlet. In this way, for electric reactors of different models or different powers or connected to different loads, the setting position of the electric reactor in the electrical component box can be determined according to the amount of heat generated by the electric reactor.

[0133] For example, when the reactor of some models or high power or connected to a larger load generates more heat, the reactor is arranged on the side of the circuit board away from the return air outlet, i.e. the downstream side of the airflow, and an opening is arranged correspondingly, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0134] For example, when the reactor of some models or low power or connected to a smaller load generates less heat, the reactor is arranged on the side of the circuit board close to the return air outlet, i.e. the upstream side of the airflow, which is beneficial to the heat dissipation of the components on the circuit board with large heat generation, and further improves the overall heat dissipation effect.

[0135] Figure 5 is a schematic diagram of one embodiment of the electrical component of the embodiment of the present application; Figure 6 is a schematic diagram of another embodiment of the electrical component of the embodiment of the present application.

[0136] As shown in Figure 5 , the electrical components arranged in the electrical component box include a circuit board and a reactor, and the control circuit, signal circuit, power supply circuit, exhaust fan driving circuit and supply fan driving circuit are arranged on the control circuit board; the reactor is arranged on the downstream side of the airflow of the circuit board, so that when the reactor of some models or high power or connected to a larger load generates more heat, the reactor is arranged on the downstream side of the airflow of the circuit board, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0137] As shown in Figure 6 , unlike Figure 5 , when the reactor of some models generates less heat, the reactor is arranged on the upstream side of the airflow of the circuit board, which is beneficial to the heat dissipation of the components on the circuit board with large heat generation, and further improves the overall heat dissipation effect.

[0138] In addition, according to Figure 5 and Figure 6 , since the exhaust fan driving circuit and the supply fan driving circuit are arranged on the control circuit board in the electrical component box 120, the motor parameters (such as temperature, current, voltage, etc.) of the fan can be detected by using the components on the control circuit board, and the fan can be controlled by using the control circuit on the control circuit board, so that accurate control can be realized in cooperation with different functions of the air handling equipment, such as constant air volume control and automatic adjustment of air volume under different static pressure conditions.

[0139] In some embodiments, the circuit board includes two or more separate circuit boards, i.e. the circuit board is not integral.

[0140] For example, the circuit boards include a first circuit board and a second circuit board, the first circuit board is a master control circuit board, the second circuit board is provided with a fan driving circuit, that is, the master control circuit board and the fan driving circuit board are not integrated, the master control circuit board is provided with a control circuit, a signal circuit and a power supply circuit, for example;

[0141] And the reactor and the second circuit board are both arranged on the side of the first circuit board away from the return air inlet, and the opening is also arranged at the position corresponding to the reactor, or the second circuit board is arranged on the side of the first circuit board away from the return air inlet, and the reactor is arranged on the side of the first circuit board close to the return air inlet.

[0142] In this way, for the case that the master control circuit board (the first circuit board) and the fan driving circuit board (the second circuit board) provided with the fan driving circuit are not integrated,

[0143] For example, when the reactor of some models or high power or connected to a larger load generates a larger amount of heat, the reactor and the fan driving circuit board are both arranged on the side of the master control circuit board away from the return air inlet, that is, the downstream side of the airflow, and the opening is arranged correspondingly, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and further improves the overall heat dissipation effect;

[0144] For example, when the reactor of some models or low power or connected to a smaller load generates a smaller amount of heat, the fan driving circuit board is arranged on the side of the master control circuit board away from the return air inlet, that is, the downstream side of the airflow, and the reactor is arranged on the side of the master control circuit board close to the return air inlet, that is, the upstream side of the airflow, which is beneficial to the heat dissipation of the fan driving circuit with a large amount of heat on the fan driving circuit board, and further improves the overall heat dissipation effect.

[0145] Figure 7 is a schematic view of another embodiment of the electrical component of the present application. As shown in Figure 7 The reactor and the fan driving circuit board are both arranged on the side of the master control circuit board away from the return air inlet, that is, the downstream side of the airflow. This is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0146] In some embodiments, the fan driving circuit board (the second circuit board) is arranged on the side of the master control circuit board (the first circuit board) away from the return air inlet, and for the case that there are multiple fans and multiple fan driving circuits, the fan driving circuit board can be integrated or not integrated.

[0147] For example, the fan driving circuit board (the second circuit board) is provided with a supply air fan driving circuit and a return air fan driving circuit, that is, the supply air fan driving circuit board and the return air fan driving circuit board are integrated;

[0148] Alternatively, the fan driving circuit board (second circuit board) comprises a supply air fan driving circuit board (third circuit board) and a return air fan driving circuit board (fourth circuit board), the supply air fan driving circuit is arranged on the supply air fan driving circuit board, and the return air fan driving circuit is arranged on the return air fan driving circuit board, that is, the supply air fan driving circuit board and the return air fan driving circuit board are not integrated.

[0149] Figure 8 is a schematic view of another embodiment of the electrical component of the present application. As shown in Figure 8 , the electrical component does not have a reactor, and the fan driving circuit board is arranged on the side of the main control circuit board away from the return air outlet.

[0150] As shown in (a) of Figure 8 , the fan driving circuit board is arranged on the downstream side of the main control circuit board in the air flow, and the supply air fan driving circuit board and the return air fan driving circuit board are integrated, wherein the supply air fan driving circuit is arranged in region A, and the return air fan driving circuit is arranged in region B; or the supply air fan driving circuit is arranged in region B, and the return air fan driving circuit is arranged in region A.

[0151] As shown in (b) of Figure 8 , the fan driving circuit board is arranged on the downstream side of the main control circuit board in the air flow, and the supply air fan driving circuit board and the return air fan driving circuit board are not integrated, the supply air fan driving circuit board is arranged above, and the return air fan driving circuit board is arranged below; or the supply air fan driving circuit board can be arranged below, and the return air fan driving circuit board can be arranged above.

[0152] In this way, the fan driving circuit board (second circuit board) is arranged on the side of the main control circuit board (first circuit board) away from the return air outlet, that is, the downstream side in the air flow, which is beneficial to heat dissipation of the fan driving circuit, in addition, the supply air fan driving circuit and the return air fan driving circuit can be arranged on the same circuit board, or can be divided into two circuit boards and arranged separately, thereby improving the flexibility of circuit arrangement.

[0153] In some embodiments, the electrical components in the electrical component box 20 can further include Figure 5 , Figure 6 , Figure 7 and Figure 8 other components, or do not need to include Figure 5 , Figure 6 , Figure 7 and Figure 8 all the electrical components shown in

[0154] In addition, when the electrical component box 20 is installed, the front surface of the circuit board is arranged opposite to the box cover 122, so that the heat generated by the air exhaust fan driving circuit and the air supply fan driving circuit on the front surface of the circuit board can be easily discharged from the opening 123 on the box cover 122.

[0155] In some embodiments, the number of openings 123 arranged on the box cover 122 can be one or more, and the specific number of openings 123 can be designed according to actual conditions, and the embodiments of the present application do not limit this.

[0156] In some embodiments, the opening 123 can extend along the height direction of the shell 110 (i.e. the width direction of the electrical component box), that is, vertically arranged; or extend along the direction parallel to the bottom plate 112 (i.e. the length direction of the electrical component box), that is, horizontally arranged; or extend in other directions different from the width direction and the length direction, for example, obliquely arranged or curvedly arranged.

[0157] In addition, the extension directions of the plurality of openings 123 can be the same or different, that is, the plurality of openings 123 can be arranged parallel to each other or not parallel to each other. The embodiments of the present application do not limit the extension direction of the opening 123.

[0158] In some embodiments, the size of the opening 123 can be designed according to actual conditions, and the embodiments of the present application do not limit the size of the opening 123.

[0159] In some embodiments, the shape of the opening 123 can be designed according to actual conditions, for example, the opening 123 is long strip-shaped, arc-shaped, or circular, etc.

[0160] In some embodiments, the edge of the opening 123 on the upstream side of the air flow direction is provided with a baffle 124 extending to the outside of the electrical component box. Wherein, the air flow direction is the direction of the return air flow, and the upstream side of the air flow direction is the side close to the return air inlet.

[0161] In this way, on the one hand, it can prevent the condensate, dust, particulate matter, etc. inside the air handling equipment from entering the inside of the electrical component box, thereby causing electrical safety problems, and on the other hand, it can guide the flow direction of the return air flow, thereby further improving the heat dissipation effect.

[0162] Moreover, the heat of the return air flow flowing to the heat exchange core can also exchange heat with the air flow introduced from the fresh air inlet, thereby improving the heat exchange efficiency.

[0163] In some embodiments, the baffle 124 can be arranged on the edge of all openings 123 on the upstream side of the air flow direction, or the baffle 124 can be arranged on the edge of part of the openings 123 on the upstream side of the air flow direction.

[0164] For example, the baffle 124 is arranged on at least one long side of the plurality of long-strip-shaped openings 123, so that the box cover structure is simple, and the heat dissipation effect of the openings can be further improved, and the effect of preventing the condensed water or dust and particulate matter from entering the electrical component box and guiding the flow direction of the return air flow can be further improved.

[0165] In some embodiments, the baffle 124 can be a straight plate or an arc-shaped plate.

[0166] For example, the baffle 124 is a straight plate and is inclined relative to the box cover 122 in a direction away from the return air outlet 115 (for example, the positive direction of the x-axis), and the included angle between the baffle 124 and the box cover 122 is a preset angle less than 90 degrees. In this way, not only can the condensed water, dust, particulate matter and the like be better prevented from entering the box body, but also the hot air flow flowing out of the opening can be prevented from directly colliding with the return air flow to form turbulence, which is conducive to the smooth mixing of the hot air flow and the return air flow.

[0167] In some embodiments, the baffle 124 can be integrally folded by the sheet metal of the box cover 122.

[0168] In some embodiments, the projection of the baffle 124 can cover the entire opening 123 (for example, see Figure 4 ), or can also cover part of the opening 123 (for example, see Figure 2 ).

[0169] The structure of the opening and the baffle on the electrical component box in the embodiments of the present application will be exemplarily described below.

[0170] Figure 9 is a perspective view of another view of part of the structure of the electrical component box shown in Figure 10 . Figure 9 is a perspective view of another view of part of the structure of the electrical component box shown in Figure 11 .

[0171] As shown in Figure 9 , Figure 10 and Figure 11 , the opening 123 extends in the width direction of the electrical component box 120, that is, after the electrical box 120 is installed inside the shell 110, the opening 123 extends in the height direction of the shell 110 (in combination with Figure 1 and Figure 3 ).

[0172] In combination with Figure 3 and Figure 9 , Figure 10 and Figure 11As shown, the baffle 124 is arranged at the edge of the opening 123 on the upstream side of the airflow direction (the side close to the return air outlet 115), and the baffle 124 extends towards the direction away from the return air outlet 115. In this way, the condensed water, dust, particulate matter, etc. can be further prevented from entering the electrical component box, and the return air flow can be better guided, and the heat dissipation effect can be improved. Moreover, in the height direction, no matter whether the air handling equipment is installed in the normal direction or in the reverse direction, the baffle can effectively prevent the condensed water or dust, particulate matter, etc. from entering the electrical component box, and the return air flow can be better guided, and the heat dissipation effect can be improved.

[0173] In addition, in this embodiment, the baffle is an arc-shaped plate and covers the two end edges of the long strip-shaped opening, which can further prevent the condensed water, dust, particulate matter, etc. from entering the electrical component box.

[0174] In some embodiments, Figure 9 to Figure 11 The electrical component box shown is applicable to the scenario where the air handling equipment 100 is installed in the normal direction (i.e., the top plate is on the top and the bottom plate is on the bottom) or in the reverse direction (i.e., the top plate is on the bottom and the bottom plate is on the top).

[0175] In addition, in Figure 11 , the opening is not shown because it is covered by the baffle 124. Here, the baffle is an arc-shaped plate, or it can also be a straight plate arranged obliquely downward. Even if condensed water is generated, the condensed water can fall downward along the baffle at the position away from the opening and cannot enter the electrical component box.

[0176] Figure 12 is a front view of another embodiment of the electrical component box of the present embodiment.

[0177] As shown in Figure 12 , the opening extends along the length direction (x direction) of the electrical component box 120, the baffle 124-1 arranged at the edge of the opening on the upstream side of the airflow direction extends towards the direction away from the return air outlet, and the upper side of the opening is further provided with the baffle 124-2 extending towards the bottom plate of the shell.

[0178] In addition, it is assumed that after the electrical component box 120 is installed inside the shell 110, the baffle 124-2 extends towards Figure 1 the bottom plate 112 of the shell 110 shown in

[0179] In this way, the condensed water, dust, particulate matter, etc. can be further prevented from entering the electrical component box, and the return air flow can be better guided, and the heat dissipation effect can be improved.

[0180] In some embodiments, Figure 12 The electrical component box shown is applicable to the scenario where the air handling equipment 100 is installed in the normal direction (i.e., the top plate is on the top and the bottom plate is on the bottom). In some embodiments, as shown in Figure 3 andFigure 4 As shown, the air treatment device 100 further comprises a clamping portion 191 and a limiting portion 192, a clamping region is formed by the clamping portion 191, the limiting portion 192, and the side wall 111 of the shell, and one end of the electrical component box 120 is clamped in the clamping region; in addition, as shown Figure 3 As shown, the other end of the electrical component box 120 is connected with the side wall 111 of the shell through the fixing component 125. That is, in the thickness (height) direction of the electrical component box 120, one side of the electrical component box 120 is clamped with the clamping portion 191, and the other side is connected with the side wall 111 of the shell through the fixing component 125.

[0181] In some embodiments, when the electrical component box needs to be overhauled, the electrical component box 120 can be overhauled through the maintenance opening on the top plate or the side plate of the shell. Specifically, at least one of the top plate or the side plate is provided with a maintenance opening, the maintenance opening corresponds to the position where the heat exchange core is located, and a maintenance cover plate is arranged at the maintenance opening. When the electrical component box 120 is overhauled, the maintenance cover plate is first opened, and the heat exchange core body is taken out. If there is a filter screen near the heat exchange core body, the filter screen can also be taken out, and then the electrical component box is overhauled through the maintenance opening. Since the hole for passing and arranging the wires on the electrical component box is arranged on the side away from the return air inlet and close to the maintenance opening, it is convenient to disassemble the wires.

[0182] Since the electrical component box is clamped at the end away from the maintenance opening, only the screw at the end close to the maintenance opening needs to be disassembled, and then the electrical component box can be taken out, which is convenient for installation and disassembly.

[0183] For example, the clamping portion 191 is formed by foaming and is integrally formed with the air valve support 153. Specifically, the clamping portion 191 is integrally formed with the foaming forming the heat insulation cavity.

[0184] In some embodiments, as shown Figure 4 and Figure 2 As shown, the clamping portion 191 contacts a partial region of the box cover of the electrical component box 120, and the opening 123 is arranged at a position outside the partial region on the box cover. That is, the clamping portion is arranged away from the opening, so as to avoid blocking the opening by the clamping portion, and heat dissipation can be effectively performed.

[0185] In some embodiments, in the height direction of the shell, the limiting portion is arranged between the electrical component box 120 and the top plate of the shell, or the limiting portion 192 can also be arranged between the electrical component box 120 and the bottom plate of the shell.

[0186] Alternatively, the limiting portion 120 can also be arranged between the electrical component box 120 and the top plate of the shell and between the electrical component box 120 and the bottom plate of the shell.

[0187] In addition, for example, the limiting part 192 is a limiting block. In this way, because the height of the electrical component box is less than the height of the shell, by setting the limiting part 192, the movement of the electrical component box in the height direction in various installation and maintenance scenarios and during use can be prevented, ensuring the stability of the equipment operation. In some embodiments, as shown in Figure 3 and Figure 4 , the limiting part 192 is arranged at a corner inside the shell. In this way, the influence on the air flow and heat dissipation inside the air handling equipment can be reduced. In addition, for example, the limiting part is arranged at a position corresponding to the clamping part, and there is no fastening mechanism here, so the clamping part can be used to clamp and fix the electrical component box.

[0188] Thus, the clamping part 191 and the side wall of the shell limit the position of the electrical component box in the thickness direction of the electrical component box (i.e., the thickness of the box body and the box cover, for example, the y direction);

[0189] The limiting block 192 and the bottom plate of the shell limit the position of the electrical component box in the height direction of the electrical component box (i.e., the direction from the top plate to the bottom plate, for example, the z direction).

[0190] Figure 13 is another perspective view of another angle of an embodiment of the electrical component box of the present application.

[0191] For example, in combination with Figure 3 , Figure 4 and Figure 9 to Figure 13 , the fixing part 125 is a fixing plate, for example, the fixing edge is formed by sheet metal flanging; and the fixing plate is provided with a threaded hole 126, so that the fixing plate can be fixed on the side wall 111 by a bolt, thereby fixing and connecting one side of the electrical component box 120 with the side wall 111 of the shell, and the other side is clamped and fixed by the clamping part 191.

[0192] In this way, only one side needs to be provided with a fixing part, which can reduce the use of fixing parts and facilitate the installation, disassembly and maintenance of the electrical component box.

[0193] In addition, in some embodiments, as shown in Figure 3 , Figure 4 and Figure 9 , there is a gap between the electrical component box 120 and the side wall 111. In this way, in combination with Figure 13 , the space formed by the gap can accommodate the part (such as the circuit board fixing buckle, the end of the fixing screw, etc.) of some components in the electrical component box 120 that protrudes from the back of the box body 121, for example, the outer end of the fixing column 127 of the circuit board; and the gap can also form a heat dissipation space, further improving the heat dissipation effect.

[0194] In some embodiments, as shown in Figure 3, Figure 4 and Figure 7 As shown in Figs. 16 and 17, the box body 121 of the electrical component box is provided with a hole portion 129 at the side portion 128 on the side away from the return air outlet 115. The hole portion 129 can be used for passing the wires, and in addition, heat dissipation can be performed through the hole portion 129.

[0195] In this way, the passing and arrangement of the wires are facilitated, and the maintenance through the maintenance opening is facilitated, and the maintenance through the maintenance opening is facilitated, and the separation of the strong current and the weak current can be realized, and the electrical safety is further ensured; the hot air flow in the electrical component box can also be discharged through the hole portion, and is discharged outside the equipment along with the return air flow, and the heat dissipation effect is further improved.

[0196] In addition, as shown in Figs. 18 and 19, a wire tying band 193 can also be arranged in the shell, and is used for fixing the wires. Figure 4

[0197] In some embodiments, the air treatment equipment 100 further comprises a power line and a wire of a fan, and at least one of the power line and the wire of the fan is provided with an electromagnetic interference suppression element, such as a magnetic ring or a filter.

[0198] In addition, in some embodiments, the strong current is passed through the hole in the bottom of the shell, and the weak current is passed through the hole in the upper portion of the shell, so that the separation of the strong current and the weak current is realized.

[0199] In the present embodiment, the magnetic ring is taken as an example for description, but the embodiments of the present application are not limited to using the magnetic ring, and other electromagnetic interference suppression elements can also be used.

[0200] Figure 14 Fig. 20 is another perspective view of one embodiment of the internal structure of the air treatment equipment of the present application; Figure 15 Fig. 21 is an enlarged view of the partial structure including the exhaust fan 132; Figure 16 Fig. 22 is an enlarged view of the partial structure including the supply fan 131.

[0201] As shown in Figs. 18 and 19, the side wall includes a foamed inner wall 111-1 and a metal outer wall 111-2, and the foamed inner wall 111-1 near the exhaust fan 132 is provided with a magnetic ring fixing portion 133-1 and a pre-embedded plate metal 134-1, and in addition, a wire tying buckle 135 is further provided. Figure 14 Figure 15 As shown in Figs. 20 and 21, the foamed inner wall 111-1 near the supply fan 131 is provided with a magnetic ring fixing portion 133-2 and a pre-embedded plate metal 134-2.

[0202] As shown in Figs. 20 and 21, the foamed inner wall 111-1 near the supply fan 131 is provided with a magnetic ring fixing portion 133-2 and a pre-embedded plate metal 134-2. Figure 14 Figure 16 As shown in Figs. 20 and 21, the foamed inner wall 111-1 near the supply fan 131 is provided with a magnetic ring fixing portion 133-2 and a pre-embedded plate metal 134-2.

[0203] ​​​Magnetic rings are arranged on the magnetic ring fixing portions 133-1, 133-2 for the power supply line or the lead wire to pass through. In this way, electromagnetic interference in the shell can be reduced, and the performance of the equipment can be ensured.

[0204] In some embodiments, the box body of the electrical component box has a protruding convex portion towards the outside of the box body, which can also be referred to as a convex hull.

[0205] Figure 17 is a schematic view of another embodiment of the electrical component box of the embodiments of the present application. As shown in Figure 17 A protruding convex portion 122-1 is formed on the box cover of the electrical component box 120, so that the space formed by the convex portion 122-1 can accommodate the part of some components in the box body 121, such as the capacitor on the control circuit board.

[0206] In addition, the convex portion 122-1 and the opening 123 are arranged at different positions on the box cover.

[0207] In this way, the space formed by the convex portion can accommodate the part of some components in the electrical component box, such as the capacitor with a certain height in the electrical component box, which is beneficial to miniaturization, and can also form a heat dissipation space to further improve the heat dissipation effect.

[0208] In addition, it is beneficial to the miniaturization of the electrical component box. For example, the convex portion is arranged away from the position of the clamping portion.

[0209] In the above embodiments, the electrical component box is arranged in the shell of the air handling device, but the wiring terminal connected to the municipal power supply can be arranged outside the shell, and in this case, the shell is provided with a wire passing hole for communication between the electrical component box and the wiring terminal.

[0210] In addition, a wire passing groove structure can also be arranged on the foaming of the heat insulation cavity, or a wire passing buckle can be integrally formed on the cover of the supply air fan or the exhaust air fan to facilitate the fixation of the connecting wire.

[0211] In the above embodiments, the supply air fan and the exhaust air fan are driven by different motors, i.e., two motors are arranged to drive the supply air fan and the exhaust air fan respectively. However, in some embodiments, a single motor can also be arranged to drive the supply air fan and the exhaust air fan.

[0212] Figure 18 is a top view of another embodiment of the internal structure of the air handling device of the embodiments of the present application. As shown in Figure 18As shown, the housing of the air handling device 100" is provided with a supply air fan 131 close to the supply air outlet 114, an exhaust air fan 132 close to the exhaust air outlet 116, and a heat exchange core 140; unlike the above-mentioned embodiments, the supply air fan 131 and the exhaust air fan 132 are driven by the same motor 194, i.e., a single-motor double-fan structure. Other structures can refer to the description in the above-mentioned embodiments, which will not be described here.

[0213] In addition, the electrical component box can be integrated with the junction box and arranged outside the housing of the air handling device.

[0214] According to the above-mentioned embodiments, by arranging an opening at a position corresponding to the heating module in the electrical component box, the hot air flow caused by the heating module in the electrical component box can be discharged through the opening and discharged to the outside of the air handling device along with the return air flow, improving the heat dissipation effect of the electrical components in the electrical component box and ensuring the electrical safety and performance of the air handling device.

[0215] Further, the heating module includes a fan drive circuit, so that the fan drive circuit is external and arranged in the electrical component box 120, which facilitates real-time detection of the motor parameters of the fan, so as to conveniently and accurately detect the motor parameters of the fan, realize real-time monitoring of the fan itself, ensure performance, strengthen protection of the fan, and improve service life; and cooperate with different functions of the air handling device to realize accurate control.

[0216] Further, by arranging an opening on the electrical component box at a position corresponding to the fan drive circuit, the hot air flow caused by the fan drive circuit with large heat in the electrical component box can be discharged through the opening and discharged to the outside of the air handling device along with the return air flow, improving the heat dissipation effect of the electrical components in the electrical component box and ensuring the electrical safety and performance of the air handling device.

[0217] Further, the opening is arranged on the cover of the electrical component box closer to the return air outlet than the box body, which is conducive to discharging the hot air flow to the outside of the air handling device along with the return air flow, and further improves the heat dissipation effect.

[0218] Further, the supply air fan drive circuit and the return air fan drive circuit are arranged at positions corresponding to the openings, which further improves the heat dissipation effect and ensures electrical safety.

[0219] Further, the electrical components in the electrical component box further include a heating module, and the opening is further arranged at a position corresponding to the heating module, so as to improve the heat dissipation effect of the heating module and ensure electrical safety.

[0220] Further, the heating module comprises an electric reactor, and for electric reactors of different models or different power or connected to different loads, the setting positions of the electric reactors in the electrical component box can be determined according to the heat generation of the electric reactors.

[0221] For example, when the electric reactor of certain model or high power or connected to large load generates large heat, the electric reactor is arranged on the side of the circuit board far from the return air outlet, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the electric reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0222] For example, when the electric reactor of certain model or low power or connected to small load generates small heat, the electric reactor is arranged on the side of the circuit board close to the return air outlet, i.e. the upstream side of the air flow, which is beneficial to the heat dissipation of the components on the circuit board with large heat generation, and further improves the overall heat dissipation effect.

[0223] Further, for the case that the main control circuit board (the first circuit board) and the fan driving circuit board (the second circuit board) are not integrally arranged,

[0224] For example, when the electric reactor of certain model or high power or connected to large load generates large heat, the electric reactor and the fan driving circuit board are arranged on the side of the main control circuit board far from the return air outlet, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the electric reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0225] For example, when the electric reactor of certain model or low power or connected to small load generates small heat, the fan driving circuit board is arranged on the side of the main control circuit board far from the return air outlet, i.e. the downstream side of the air flow, and the electric reactor is arranged on the side of the main control circuit board close to the return air outlet, i.e. the upstream side of the air flow, which is beneficial to the heat dissipation of the fan driving circuit on the fan driving circuit board with large heat generation, and further improves the overall heat dissipation effect.

[0226] Further, the fan driving circuit board (the second circuit board) is arranged on the side of the main control circuit board (the first circuit board) far from the return air outlet, i.e. the downstream side of the air flow, which is beneficial to the heat dissipation of the fan driving circuit, and in addition, the supply fan driving circuit and the return fan driving circuit can be arranged on the same circuit board or can be arranged on two circuit boards respectively, which improves the flexibility of circuit arrangement.

[0227] Further, the circuit board in the electrical component box is further provided with a strong current circuit and a weak current circuit, and the strong current circuit is arranged below the weak current circuit, so that the hot air flow generated by the strong current circuit rises and is dissipated in the rising process, avoiding the hot air flow gathering at the top, and further improving the heat dissipation effect. In addition, the strong and weak current separation is realized, and the anti-interference performance is improved.

[0228] Further, the edge of the opening on the upstream side of the air flow direction is provided with a baffle extending to the outside of the electrical component box, so that on the one hand, the condensed water or dust, particles in the air handling equipment can be prevented from entering the electrical component box, thereby causing electrical safety problems, and on the other hand, the flow direction of the return air flow can be guided, thereby further improving the heat dissipation effect.

[0229] Further, the baffle is arranged on the side of the opening close to the return air inlet, and extends away from the return air inlet, thereby further preventing the condensed water or dust, particles from entering the electrical component box and better guiding the return air flow, thereby improving the heat dissipation effect. Moreover, in the height direction, whether the air handling equipment is installed in the forward direction or the reverse direction, the baffle can effectively prevent the condensed water or dust, particles from entering the electrical component box and better guide the return air flow, thereby improving the heat dissipation effect.

[0230] Further, a plurality of openings are arranged on the electrical component box, the openings are long strips, and the baffle is arranged on at least one long side of the opening, so that the box cover structure is simple, the heat dissipation effect of the opening can be further improved, and the effect of preventing the condensed water, dust, particles, etc. from entering the electrical component box and guiding the return air flow can be further improved.

[0231] Further, the baffle is a straight plate or an arc, so that it can be freely designed according to the actual situation, the manufacturing efficiency is improved, and the effect of preventing the condensed water, dust, particles, etc. from entering the electrical component box and guiding the return air flow is further improved.

[0232] Further, the electrical component box is arranged in the corner close to the return air inlet in the shell, so that the other components inside the air handling equipment can be reasonably arranged, the electrical component box is arranged in the corner where the air flow is less, which can reduce the influence on the air flow inside the air handling equipment, reduce the pressure loss of the whole machine, and is conducive to the miniaturization of the whole machine.

[0233] Further, the side of the box body of the electrical component box on the side away from the return air inlet is provided with a hole part, so that the wire can be conveniently passed through and arranged, and the maintenance through the maintenance opening can be facilitated, and the separation of strong current and weak current can be realized, thereby further ensuring electrical safety; the hot air flow in the electrical component box can also be discharged through the hole part and discharged outside the equipment along with the return air flow, thereby further improving the heat dissipation effect.

[0234] Further, the air handling equipment further comprises a clamping part and a fixing part arranged in the shell, one side of the electrical component box is fixed to the side wall of the shell through the fixing part, and the other side is clamped and fixed through the clamping part. In this way, the use of the fixing part can be reduced, and the disassembly and maintenance of the electrical component box can be facilitated.

[0235] Further, the electrical component box has a gap between the electrical component box and the side wall in a state where the electrical component box is fixed to the side wall of the housing by the fixing component. In this way, the space formed by the gap can accommodate the parts (for example, the circuit board fixing buckle, the end of the fixing screw, etc.) of the electrical component box, and can also form a heat dissipation space, further improving the heat dissipation effect.

[0236] Further, the air treatment device further comprises a limiting part arranged between the electrical component box and the top plate of the housing or arranged between the electrical component box and the bottom plate of the housing, which can prevent the movement of the electrical component box in the height direction in various installation and maintenance scenarios and during use, and ensure the stability of the device operation.

[0237] In addition, for example, the limiting part is arranged at a position corresponding to the clamping part, and there is no fastening mechanism at this position, and the limiting part can be clamped and fixed with the clamping part to clamp and fix the electrical component box.

[0238] Further, the limiting part is arranged at a corner in the housing, so that the influence on the airflow and heat dissipation in the air treatment device can be reduced.

[0239] Further, at least one of the power supply line and the lead wire of the fan is provided with an electromagnetic interference suppression element, such as a magnetic ring or a filter, so that the electromagnetic interference in the housing can be reduced, and the performance of the device can be ensured.

[0240] Embodiment 2

[0241] The embodiment of the present application also provides an electrical module in an air treatment device.

[0242] The air treatment device is, for example, the air treatment device described in Embodiment 1. However, the electrical module can also be applicable to other air treatment devices, and the embodiment of the present application does not limit this.

[0243] In some embodiments, the electrical module comprises an electrical component, the electrical component comprising a circuit board and a strong current circuit and a weak current circuit arranged on the circuit board, and in a state where the electrical module is arranged in the air treatment device, the strong current circuit is arranged below the weak current circuit.

[0244] For example, the strong current circuit comprises a power supply circuit, a capacitor, etc., and the capacitor is used for filtering and energy storage of the power supply circuit, etc.

[0245] For example, the weak current circuit comprises a control circuit, a detection circuit, a communication circuit, etc.

[0246] Figure 17 is a schematic view of an embodiment of the electrical component of the embodiment of the present application. As shown in Figure 17As shown, the circuit board contains both high-voltage and low-voltage circuits, with the high-voltage circuits positioned below the low-voltage circuits. This allows the hot airflow generated by the high-voltage circuits to rise and dissipate heat during this ascent, preventing hot airflow from accumulating at the top and improving heat dissipation. This ensures the electrical safety and performance of the air handling equipment. Furthermore, the separation of high and low voltage circuits enhances anti-interference performance.

[0247] In some embodiments, a fan drive circuit is also provided on the circuit board.

[0248] like Figure 17 As shown, the fan drive circuit is located on the side of the high-voltage circuit and low-voltage circuit away from the return air inlet of the air handling unit. For the structure and location of the return air inlet of the air handling unit, please refer to the relevant description in Embodiment 1, which will not be repeated here.

[0249] like Figure 17 As shown, placing the fan drive circuit on the side of the high-voltage and low-voltage circuits away from the return air vent of the air handling unit, i.e., downstream of the airflow, is beneficial for heat dissipation of the fan drive circuit and further improves the overall heat dissipation effect.

[0250] In some embodiments, the electrical components also include reactors. For reactors of different models, different power, or connected to different loads, the location of the reactor can be determined according to the amount of heat generated.

[0251] In some embodiments, such as Figure 17 As shown, the reactor is placed on the side of the circuit board near the return air vent of the air handling unit. For example, when the heat generated by certain models or low-power reactors or reactors connected to small loads is small, placing the reactor on the side of the circuit board near the return air vent, i.e. the upstream side of the airflow, is beneficial for the heat dissipation of components with high heat generation on the circuit board, and further improves the overall heat dissipation effect.

[0252] Alternatively, in some embodiments, the reactor can also be located on the side of the circuit board away from the return air vent. For example, when certain models or high-power reactors or those connected to large loads generate a lot of heat, placing the reactor on the side of the circuit board away from the return air vent, i.e., downstream of the airflow, is beneficial for the heat dissipation of the fan drive circuit and the reactor, as well as for the miniaturization of the device, further improving the overall heat dissipation effect.

[0253] In addition, the fan drive circuit on the circuit board may include an air supply fan drive circuit and an exhaust fan drive circuit, which can be set separately.

[0254] In some embodiments, the circuit board comprises a first circuit board and a second circuit board, the second circuit board is arranged on a side of the first circuit board away from the air return port of the air handling device, the first circuit board is provided with the strong current circuit and the weak current circuit, and the second circuit board is provided with the supply air fan driving circuit and the return air fan driving circuit, or the second circuit board comprises a third circuit board and a fourth circuit board, the third circuit board is provided with the supply air fan driving circuit, and the fourth circuit board is provided with the return air fan driving circuit.

[0255] In this way, the second circuit board is arranged on a side of the first circuit board away from the air return port, i.e. on a downstream side of the air flow, which is conducive to heat dissipation of the fan driving circuits on the second circuit board. In addition, the supply air fan driving circuit and the return air fan driving circuit can be arranged on the same circuit board or can be arranged on two separate circuit boards, thereby improving the flexibility of circuit arrangement.

[0256] Figure 18 is a schematic view of another embodiment of the electrical component of the embodiment of the present application. As shown in the figure, the first circuit board provided with the strong current circuit and the weak current circuit and the second circuit board provided with the fan driving circuit are arranged separately. On the first circuit board, the strong current circuit is arranged below the weak current circuit. In this way, the hot air flow generated by the strong current circuit rises and dissipates heat during the rising process, avoiding the hot air flow from gathering at the top, thereby improving the heat dissipation effect and ensuring the electrical safety and performance of the air handling device. Figure 18

[0257] On the second circuit board, the supply air fan driving circuit and the return air fan driving circuit are arranged respectively. In addition, the second circuit board is arranged on a side of the first circuit board away from the air return port, i.e. on a downstream side of the air flow, which is conducive to heat dissipation of the fan driving circuits. For the structure and position of the air return port of the air handling device, please refer to the relevant description in Embodiment 1, which will not be repeated here.

[0258] Figure 19 is a schematic view of another embodiment of the electrical component of the embodiment of the present application. As shown in the figure, the first circuit board provided with the strong current circuit and the weak current circuit and the second circuit board provided with the fan driving circuit are arranged separately. On the first circuit board, the strong current circuit is arranged below the weak current circuit. In this way, the hot air flow generated by the strong current circuit rises and dissipates heat during the rising process, avoiding the hot air flow from gathering at the top, thereby improving the heat dissipation effect and ensuring the electrical safety and performance of the air handling device. Figure 19

[0259] ​​The third circuit board and the fourth circuit board are respectively provided with a supply air fan driving circuit and a return air fan driving circuit. Moreover, the third circuit board and the fourth circuit board are arranged on the side of the first circuit board away from the return air inlet, i.e. on the downstream side of the air flow, which is conducive to heat dissipation of the fan driving circuits. The structure and position of the return air inlet of the air treatment device can be known from the relevant description in Embodiment 1, which will not be repeated here.

[0260] In some embodiments, the electrical module further comprises: an electrical component box, which internally accommodates electrical components, and the electrical component box is provided with at least one opening. In this way, the hot air flow generated by the electrical components in the box body is discharged through the opening, which can further improve the heat dissipation effect.

[0261] In some embodiments, the opening is arranged at least at a position corresponding to the fan driving circuit, so that the hot air flow generated by the fan driving circuit can be discharged through the opening, further improving the heat dissipation effect.

[0262] The specific structure of the electrical component box and the opening can be known from the relevant description in Embodiment 1, which will not be repeated here.

[0263] According to the above-mentioned embodiments, since the strong current circuit is arranged below the weak current circuit, the hot air flow generated by the strong current circuit rises and dissipates heat during the rising process, avoiding the hot air flow from gathering at the top, improving the heat dissipation effect, and ensuring the electrical safety and performance of the air treatment device. In addition, the separation of strong and weak currents is realized, and the anti-interference performance is improved.

[0264] Further, the circuit board is provided with a fan driving circuit, and the fan driving circuit is arranged on the side of the strong current circuit and the weak current circuit away from the return air inlet of the air treatment device, i.e. on the downstream side of the air flow, which is conducive to heat dissipation of the fan driving circuit, further improving the overall heat dissipation effect.

[0265] Further, the electrical components further comprise a reactor. For reactors of different models or different powers or connected to different loads, the setting position of the reactor can be determined according to the size of the heat generated by the reactor.

[0266] For example, when the heat generated by some models or high-power or connected to large loads is large, the reactor is arranged on the side of the circuit board away from the return air inlet, i.e. on the downstream side of the air flow, which is conducive to heat dissipation of the reactor and miniaturization of the device, further improving the overall heat dissipation effect.

[0267] For example, when the heat generated by some models or low-power or connected to small loads is small, the reactor is arranged on the side of the circuit board close to the return air inlet, i.e. on the upstream side of the air flow, which is conducive to heat dissipation of the components on the circuit board with large heat, further improving the overall heat dissipation effect.

[0268] Further, for the case that the main control circuit board (the first circuit board) and the fan drive circuit board (the second circuit board) provided with the fan drive circuit are not integrally arranged,

[0269] For example, when the reactor of some models or high power or connected to a larger load generates more heat, the reactor and the fan drive circuit board are arranged on the side of the main control circuit board away from the return air outlet, i.e. the downstream side of the airflow, which is beneficial to the heat dissipation of the reactor and the miniaturization of the device, and further improves the overall heat dissipation effect.

[0270] For example, when the reactor of some models or low power or connected to a smaller load generates less heat, the fan drive circuit board is arranged on the side of the main control circuit board away from the return air outlet, i.e. the downstream side of the airflow, and the reactor is arranged on the side of the main control circuit board close to the return air outlet, i.e. the upstream side of the airflow, which is beneficial to the heat dissipation of the fan drive circuit on the fan drive circuit board, and further improves the overall heat dissipation effect.

[0271] Further, the second circuit board is arranged on the side of the first circuit board away from the return air outlet, i.e. the downstream side of the airflow, which is beneficial to the heat dissipation of the fan drive circuit on the second circuit board. In addition, the supply fan drive circuit and the return fan drive circuit can be arranged on the same circuit board or can be divided into two circuit boards and arranged separately, which improves the flexibility of circuit arrangement.

[0272] Further, the above-mentioned electrical components are accommodated in the electrical component box, and at least one opening is arranged on the electrical component box, so that the hot air flow generated by the electrical components inside the box body can be discharged through the opening, which can further improve the heat dissipation effect.

[0273] Further, the opening is arranged at least at a position corresponding to the fan drive circuit, so that the hot air flow generated by the fan drive circuit can be discharged through the opening, which further improves the heat dissipation effect.

[0274] The above describes the present application in combination with specific embodiments, but those skilled in the art should understand that these descriptions are exemplary and not limiting the scope of protection of the present application. Those skilled in the art can make various modifications and changes to the present application according to the spirit and principles of the present application, and these modifications and changes are also within the scope of the present application.

Claims

1. An air treatment device, characterized in that, The air handling device includes: a housing having a side wall, a fresh air inlet, an air supply outlet, an air return inlet, and an air exhaust outlet being provided on the side wall of the housing; at least one fan provided in the housing; an electrical component box in which electrical components are accommodated, the electrical component box being provided in the housing in a position close to the air return inlet, the electrical components including a circuit board and a heat generating module provided on the circuit board, at least one opening being provided on the electrical component box, the opening being provided at least in a position corresponding to the heat generating module.

2. The air handling device according to claim 1, wherein the electrical component box has a box body and a box cover, the box cover being closer to the air return inlet than the box body, the opening is provided on the box cover.

3. The air handling device according to claim 1, wherein the heat generating module includes a fan drive circuit for driving the fan, the at least one fan includes an air supply fan and an air exhaust fan, the fan drive circuit includes an air supply fan drive circuit and an air return fan drive circuit, the opening is provided at least in a position corresponding to the air supply fan drive circuit and the air return fan drive circuit.

4. The air handling device according to any one of claims 1 to 3, wherein an edge of the opening on an upstream side in an air flow direction is provided with a baffle extending toward the outside of the electrical component box.

5. The air handling device according to claim 4, wherein the baffle is provided on a side of the opening close to the air return inlet, and the baffle extends toward a direction away from the air return inlet.

6. The air handling device according to claim 4, wherein a plurality of openings are provided on the electrical component box, the openings being long strip-shaped, the baffle is provided on at least one long side of the opening.

7. The air handling device according to claim 4, wherein the baffle is a straight plate or an arc-shaped plate.

8. The air handling device according to claim 1, wherein the electrical component box is provided in a corner of the housing close to the air return inlet.

9. The air handling device according to claim 2, wherein a hole portion is provided on a side of the box body of the electrical component box on a side away from the air return inlet.

10. The air handling device according to claim 1, wherein the air handling device further includes a fixing member and an engaging portion provided in the housing, one side of the electrical component box is fixed to the side wall of the housing by the fixing member, and the other side is engaged and fixed by the engaging portion.

11. The air handling device according to claim 10, wherein in a state where the electrical component box is fixed to the side wall of the housing by the fixing member, a gap is provided between the electrical component box and the side wall.

12. The air handling device according to claim 1 or 10, wherein the housing further has a bottom plate and a top plate, the air handling device further includes A position limiting portion is provided between the electrical component case and the top plate of the housing or between the electrical component case and the bottom plate of the housing in the height direction of the housing.

13. The air handling device according to claim 1, wherein The air handling device further includes a power supply cord and a lead of the fan, At least one of the power supply cord and the lead of the fan is provided with an electromagnetic interference suppression element.

14. An electrical module in an air handling device, characterized by, The electrical module includes an electrical component, The electrical component includes a circuit board, and a strong electric circuit and a weak electric circuit provided on the circuit board, In a state where the electrical module is provided in the air handling device, the strong electric circuit is provided below the weak electric circuit.

15. The electrical module according to claim 14, wherein The electrical component further includes a reactor, and the circuit board further includes a fan drive circuit, The fan drive circuit is provided on a side of the strong electric circuit and the weak electric circuit away from a return air inlet of the air handling device, The reactor is provided on a side of the circuit board close to the return air inlet of the air handling device, or the reactor is provided on a side of the circuit board away from the return air inlet.

16. The electrical module according to claim 14, wherein The electrical component further includes a reactor, and the circuit board includes a first circuit board and a second circuit board, The first circuit board is provided with the strong electric circuit and the weak electric circuit, and the second circuit board is provided with a fan drive circuit, and The reactor and the second circuit board are provided on a side of the first circuit board away from a return air inlet of the air handling device, or the second circuit board is provided on a side of the first circuit board away from the return air inlet and the reactor is provided on a side of the first circuit board close to the return air inlet.

17. The electrical module according to claim 14, wherein The circuit board includes a first circuit board and a second circuit board, and the second circuit board is provided on a side of the first circuit board away from a return air inlet of the air handling device, The first circuit board is provided with the strong electric circuit and the weak electric circuit, The second circuit board is provided with a supply air fan drive circuit and a return air fan drive circuit, or The second circuit board includes a third circuit board and a fourth circuit board, the third circuit board is provided with a supply air fan drive circuit, and the fourth circuit board is provided with a return air fan drive circuit.

18. The electrical module of any of claims 14-17, wherein, The electrical module further includes: An electrical component case that accommodates the electrical component therein, and the electrical component case is provided with at least one opening.

19. The electrical module according to claim 18, wherein The circuit board is further provided with a fan drive circuit, The opening of the electrical component case is provided at least at a position corresponding to the fan drive circuit.

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