Fresh air fan

Abstract

The present invention discloses a new air blower, comprising a housing and a blower component arranged in the housing, wherein the blower component comprises: a motor mounting frame connected to the housing; a motor connected to the motor mounting frame; a wind wheel connected to the motor; and a volute, wherein the wind wheel is arranged in the volute, and the volute is connected to the motor mounting frame. The technical solution of the present invention has the advantage of high assembly efficiency of the new air blower.

Description

Technical Field

[0001] The invention relates to the field of air conditioning, and in particular to a new air blower. Background Art

[0002] A fresh air fan is a device that can introduce outdoor fresh air into the room to adjust the indoor air quality. Existing fresh air fans also have the function of exhausting indoor air and using the heat or cold of the indoor air to adjust the temperature of the fresh air through a heat exchanger to make the temperature of the fresh air more suitable. Existing fresh air fans are inefficient during assembly. Summary of the invention

[0003] The main purpose of the present invention is to provide a new air fan, aiming to improve the assembly efficiency of the new air fan.

[0004] To achieve the above object, the new air blower proposed in the present invention comprises a housing and a blower component arranged in the housing, wherein the blower component comprises:

[0005] A motor mounting frame, the mounting frame being connected to the housing;

[0006] A motor connected to the motor mounting frame;

[0007] a wind wheel connected to the motor; and

[0008] A volute, wherein the wind wheel is arranged in the volute, and the volute is connected to the motor mounting frame.

[0009] Optionally, a calabash hole is provided on the motor mounting frame, and the motor mounting frame is connected to the housing by screws passing through the calabash hole.

[0010] Optionally, the fresh air fan further includes:

[0011] A heat exchange core having a first air duct and a second air duct formed therein and spaced from each other;

[0012] A fresh air duct member and a return air duct member, wherein the fresh air duct member and the return air duct member are respectively connected to two sides of the heat exchange core;

[0013] The fresh air duct component, the heat exchange core and the return air duct component divide the interior of the shell into a fresh air duct and a return air duct, the fresh air duct includes the first duct, and the return air duct includes the second duct; the fan component is provided in both the fresh air duct and the return air duct.

[0014] Optionally, the fresh air fan further includes a bypass air duct member, the bypass air duct member and the outer casing form a bypass air duct, the bypass air duct member is connected to the fresh air duct member and the return air duct member, and the bypass air duct connects the fresh air duct and the return air duct.

[0015] Optionally, the fresh air fan further includes: an air valve assembly, the air valve assembly is connected to the bypass air duct component, the air valve assembly includes a valve, and the valve movably blocks the bypass air duct.

[0016] Optionally, the air valve assembly further includes:

[0017] A damper bracket is connected to the bypass duct member, and the valve is rotatably connected to the damper bracket; and

[0018] A motor is installed on the air valve bracket, and the motor is connected to the valve.

[0019] Optionally, a mounting through hole is provided on a side surface of the bypass air duct member, the air valve bracket is connected to the side surface of the bypass air duct, and the valve is arranged in the bypass air duct through the mounting through hole.

[0020] Optionally, the bypass air duct is located between the fresh air duct member and the return air duct member, and the bypass air duct abuts against the fresh air duct member, the return air duct member, the outer shell and the heat exchange core.

[0021] Optionally, the fresh air duct member, the return air duct member and the bypass air duct member are all foam members.

[0022] Optionally, the shell has a fresh air inlet, a fresh air outlet, a return air inlet and a return air outlet, the fresh air duct connects the fresh air inlet and the fresh air outlet, the return air duct connects the return air inlet and the return air outlet, and one end of the bypass duct member is arranged close to the fresh air inlet.

[0023] Optionally, the fresh air duct component and the return air duct component are both integrally formed.

[0024] The technical solution of the present invention connects the motor and the volute by using the motor mounting frame, so that the positions of the motor and the volute can be relatively fixed, so that the fan components can be assembled outside the housing first, and the assembly space outside the subject is large, which is conducive to improving the assembly efficiency of the fan components. Moreover, the fan components described in this embodiment can be mechanized and assembled during the production process of the fan components, and then the fan components are installed in the housing as a whole, which can improve the assembly success rate and efficiency of the new fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of a fresh air fan of the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the structure of Zhongxin fan after removing the panel;

[0028] Figure 3 for Figure 1 Schematic diagram of the structure of the Zhongxin fan after removing the back plate;

[0029] Figure 4 for Figure 1 Schematic diagram of the fan component structure of Zhongxin Fan;

[0030] Figure 5 for Figure 4 A top view of the blower components;

[0031] Figure 6 for Figure 4 Exploded view of the blower components;

[0032] Figure 7 for Figure 1 Schematic diagram of the structure of the Zhongxin fan after removing the panel and heat exchange core;

[0033] Figure 8 for Figure 7 Schematic diagram of the support structure of the Zhongxin fan;

[0034] Fig. 9 for Figure 7 A schematic diagram of the structure of the abutment buckle of the middle support member;

[0035] Fig.10 for Figure 1 Schematic diagram of the structure of the installation base plate, circuit board and circuit installation board of the Zhongxin fan;

[0036] Fig.11 for Fig.10 The right side view of the mounting base plate, circuit board and circuit mounting plate;

[0037] Fig.12 for Figure 1 Schematic diagram of the structure of the shell of the Zhongxin fan;

[0038] Fig.13 for Figure 2 The rear view of the fresh air duct parts of the Zhongxin fan;

[0039] Fig.14 for Fig.13 Axonometric view of the fresh air duct parts;

[0040] Fig.15 for Figure 2 Bottom view of the fresh air duct components of the new fan;

[0041] Fig.16 for Figure 2 Schematic diagram of the structure of the sensor assembly of the Zhongxin fan;

[0042] Fig.17 for Fig.16 A schematic diagram of the structure of the sensor box of the sensor assembly;

[0043] Fig.18 for Fig.16 A schematic diagram of the structure of the sensor box and the sensor of the sensor assembly;

[0044] Fig.19 for Figure 2 The structural diagram of the bypass duct components of the Zhongxin fan;

[0045] Fig. 20 for Figure 2 Schematic diagram of the bypass duct components and air valve assembly of the Zhongxin fan;

[0046] Fig.21 for Figure 2 Schematic diagram of the structure of the air valve assembly of the Zhongxin fan.

[0047] Description of Figure Numbers:

[0048]

[0049]

[0050] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0053] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0054] The invention provides a new air fan.

[0055] In the embodiment of the present invention, Figures 1 to 6 As shown, the new air fan includes a housing 100 and a fan component 700 arranged in the housing 100, and the fan component 700 includes: a motor mounting frame 710, a first motor 720, a wind wheel 730 and a volute 740. The motor mounting frame 710 is connected to the housing 100; the first motor 720 is connected to the motor mounting frame 710; the wind wheel 730 is connected to the first motor 720; the wind wheel 730 is arranged in the volute 740, and the volute 740 is connected to the motor mounting frame 710. When installing the existing fan component 700, the first motor 720 is usually installed on the housing 100 of the new fan, and then the volute 740 is installed, so that the volute 740 is fixed on the housing 100, and then the wind wheel 730 is installed in the housing 100, and the wind wheel 730 is connected to the first motor 720. This requires that the fan component 700 needs to be assembled in the housing 100 during assembly, and the installation space in the housing 100 is small, which seriously affects the overall installation efficiency of the new fan. Specifically, the fan component 700 also includes a motor bracket connecting the first motor 720 and the motor mounting bracket 710.

[0056] The technical solution of the present invention connects the first motor 720 and the volute 740 by using the motor mounting frame 710, so that the positions of the first motor 720 and the volute 740 can be relatively fixed, so that the fan component 700 can be assembled first outside the housing 100, and the assembly space outside the subject is large, which is conducive to improving the assembly efficiency of the fan component 700. Moreover, the fan component 700 described in this embodiment can be mechanized during the production process of the fan component 700, and then the fan component 700 is installed in the housing 100 as a whole, which can improve the assembly success rate and efficiency of the new fan.

[0057] The technical solution of the present invention can promote the modular production and assembly of new air blowers. For the manufacturers of new air blowers, it is possible to outsource the blower component 700 as a whole to the blower manufacturer. The blower manufacturer provides the assembled blower component 700, so that the manufacturer of the new air blower can quickly assemble the new air blower. Compared with the blower manufacturer providing the first motor 720, the wind wheel 730, and the worm gear parts and then assembling them in the housing 100 of the new air blower, the assembly efficiency is greatly improved. Affected by the installation space of the housing 100 of the new air blower, the first motor 720, the wind wheel 730, the volute 740 and other parts can be mechanized and assembled at high speed in the housing 100. Therefore, the present invention is also conducive to promoting the whole new air blower industry to be more mechanized.

[0058] Furthermore, in this implementation, if Figure 5 As shown, the motor mounting frame 710 is provided with a gourd hole 711, and the motor mounting frame 710 is connected to the housing 100 by screws passing through the gourd hole 711. The gourd hole 711 makes the entire fan component 700 more efficient and convenient when installed. The gourd hole 711 includes two holes, one large and one small. When installing the fan component 700, the screw can be first screwed on the housing 100, and then the large hole on the gourd hole 711 is aligned with the screw, and then the screw is sleeved, and then the fan component 700 is moved in the radial direction of the screw so that the screw is stuck in the small hole of the gourd hole 711, and then the screw is tightened so that the screw is stuck in the motor mounting frame 710. When the fan component 700 is disassembled, the steps are opposite to those of the fan component 700. The fan component 700 is installed using the gourd hole 711, which has the advantage of convenient disassembly and assembly. The motor mounting bracket 710 described in this embodiment is not limited to the above technical solution. In other implementations, the motor mounting bracket may be snap-connected to the housing; or the motor mounting bracket may be bonded to the housing, which has the advantage of easy installation.

[0059] Furthermore, in this implementation, if Figure 2 , Figure 3As shown, the fresh air fan also includes: a heat exchange core 600, in which a first air duct and a second air duct spaced apart from each other are formed; a fresh air duct component 200 and a return air duct component 300, and the fresh air duct component 200 and the return air duct component 300 are respectively connected to the two sides of the heat exchange core 600; the fresh air duct component 200, the heat exchange core 600 and the return air duct component 300 separate the interior of the outer shell 100 into a fresh air duct and a return air duct, the fresh air duct includes the first air duct, and the return air duct includes the second air duct; the fan component 700 is provided in both the fresh air duct and the return air duct. The fresh air fan described in this embodiment adopts a modular disassembly and assembly design. When assembling the fresh air fan, the air duct component, the return air duct component 300 and the heat exchange core 600 are placed in the outer casing 100, that is, the fresh air duct and the return air duct are spliced, and then the fan component 700 is installed. Finally, the fan component 700 is connected to the electrical control box 900 to complete the assembly. The fresh air fan has the advantage of high disassembly and assembly efficiency.

[0060] Specifically, in this embodiment, Figure 2 , Figure 3 As shown, the heat exchange core 600 is arranged in the middle of the housing 100 to divide the internal space of the housing 100 into a first cavity and a second cavity located on both sides of the heat exchange core 600, the fresh air duct member 200 and the return air duct member 300 are respectively located in the first cavity and the second cavity, the fresh air duct abuts against the housing 100 to divide the first cavity into a first fresh air sub-duct and a second return air sub-duct, the return air duct abuts against the housing 100 to divide the second cavity into a second fresh air sub-duct and a first return air sub-duct, the first duct connects the first fresh air sub-duct and the second fresh air sub-duct to form the fresh air duct, and the second duct connects the first return air sub-duct and the second return air sub-duct to form the return air duct. The second fresh air sub-duct and the second return air sub-duct are both provided with a fan component 700.

[0061] Furthermore, in this embodiment, if Figure 2 , Figure 3 As shown, the fresh air machine further includes a bypass duct member 800, the bypass duct member 800 and the housing 100 enclose a bypass duct, the bypass duct member 800 is connected to the fresh air duct member 200 and the return air duct member 300, and the bypass duct connects the fresh air duct and the return air duct. Specifically, the bypass duct member 800 is formed by assembling two sub-components.

[0062] Furthermore, in this embodiment, if Figure 3 as well as Figures 19 to 21As shown, the fresh air blower further includes: an air valve assembly 820, the air valve assembly 820 is connected to the bypass air duct member 800, the air valve assembly 820 includes a valve 821, and the valve 821 movably blocks the bypass air duct. The air valve assembly 820 is used to open and close the bypass air duct, and when the return air duct is needed to adjust the temperature of the fresh air in the air duct, the air valve assembly 820 opens the bypass air duct. The air valve assembly 820 of this embodiment is connected to the bypass air duct member 800, so that when the air valve assembly 820 needs to be repaired, the bypass air duct member 800 can be directly taken out of the housing 100, and then the air valve assembly 820 can be repaired and maintained outside the housing 100, which has the advantages of large operating space and convenient maintenance.

[0063] Furthermore, in this embodiment, if Figures 19 to 21 As shown, the air valve assembly 820 further includes: an air valve bracket 822 connected to the bypass air duct member 800, the valve 821 is rotatably connected to the air valve bracket 822; and a second motor 823 installed on the air valve bracket 822, the second motor 823 is connected to the valve 821. The second motor 823 drives the valve 821 to rotate, thereby realizing the opening and closing of the bypass air duct. The air valve assembly 820 of this embodiment is not limited to the above technical solution. In other embodiments, the air valve assembly may also include: an air valve bracket and a second motor connected to the air valve bracket, the air valve bracket is connected to the bypass air duct member, the edge of the valve is provided with a rack, and the second motor is meshed with the valve gear; a guide groove is provided inside the bypass air duct member, and the valve is slidably arranged in the guide groove so that the valve can movably open and close the bypass air duct.

[0064] Furthermore, in this embodiment, if Figures 19 to 21 As shown, the side of the bypass air duct member 800 is provided with a mounting through hole 810, the air valve bracket 822 is connected to the side of the bypass air duct, and the valve 821 is arranged in the bypass air duct through the mounting through hole 810. When the air valve assembly 820 is installed, the valve 821 is inserted into the bypass air duct through the mounting through hole 810, and then the air valve bracket 822 is connected to the bypass air duct member 800, so that the installation can be completed. The motor is located outside the bypass air duct, which is convenient for repair and disassembly of the motor. This embodiment is not limited to the above technical solution. In other implementations, it can also be that the side of the bypass air duct member is provided with an opening, the bypass air duct is abutted against the shell, so that the shell covers the opening, thereby forming the bypass air duct, and the air valve assembly is arranged in the bypass air duct through the opening, which has the advantage of convenient installation.

[0065] Furthermore, in this embodiment, if Figure 2, Figure 3 As shown, the bypass air duct is located between the fresh air duct member 200 and the return air duct member 300, and the bypass air duct abuts against the fresh air duct member 200, the return air duct member 300, the housing 100 and the heat exchange core 600. In this embodiment, the bypass air duct member 800 abuts against the housing 100, the fresh air duct member 200, the return air duct member 300 and the heat exchange core, so as to be fixed. The bypass air duct member 800 can be directly inserted into the housing 100 to complete the installation, and can also be directly withdrawn from the housing 100 to complete the disassembly. The air valve component can be first connected to the bypass air duct member 800 outside the housing 100, or disassembled from the bypass air duct member 800, and the air valve assembly 820 can also be inspected outside the housing 100, which has the advantage of convenient inspection and disassembly of the air valve assembly 820. The bypass air duct member 800 described in this embodiment is not limited to the above technical solution. In other embodiments, the bypass air duct member may be connected to the outer shell by screws, or the bypass air duct member may be snap-connected to the outer shell, which has the advantage of convenient disassembly and assembly of the bypass air duct member.

[0066] Furthermore, in this embodiment, if Figures 1 to 3 As shown, the housing 100 has a fresh air inlet 110, a fresh air outlet 120, a return air inlet 130 and a return air outlet 140, the fresh air duct connects the fresh air inlet 110 and the fresh air outlet 120, the return air duct connects the return air inlet 130 and the return air outlet 140, and one end of the bypass air duct is arranged close to the fresh air inlet 110. The bypass air duct can supply the indoor air in the return air duct to the fresh air duct at the fresh air inlet 110, and the outdoor fresh air at the fresh air inlet 110 is mixed with the return air, so that the temperature of the outdoor air is more suitable, which is conducive to reducing the heat exchange burden of the heat exchange core.

[0067] In the embodiment of the present invention, Figure 1 , Fig.10 , Fig.11 As shown, the new air blower further includes an electric control box 900, the electric control box 900 includes a circuit board 930 and an electric control box body 910, the circuit board 930 is electrically connected to the fan component 700, the circuit board 930 is arranged in the electric control box body 910, a first wiring groove 912 is arranged in the electric control box body 910, and the opening direction of the first wiring groove 912 avoids the circuit board 930. The electric control box 900 has wires connected to electrical components such as the fan component 700, and when the wires are arranged in a disorderly manner, it is easy for the wires to affect the electromagnetic compatibility of the circuit board 930, especially when the wires are passed by a large current.

[0068] The technical solution of the present invention adopts the first wiring groove 912 provided in the electric control box 900. The first wiring groove 912 can be used for arranging and installing the wires of the circuit board 930, which is conducive to making the arrangement of the wires in the electric control box 900 more regular. The opening direction of the first wiring groove 912 avoids the circuit board 930, so that the groove wall of the first wiring groove 912 separates the first wiring groove 912 from the circuit board 930, avoiding the wires in the wiring groove from being arranged crosswise with the circuit board 930. At the same time, the groove wall can also block the radiation of the wires in the first wiring groove to the circuit board 930, which is conducive to reducing the influence of the wires on the electromagnetic compatibility of the circuit board 930.

[0069] Furthermore, in this embodiment, if Figure 1 , Fig.10 , Fig.11 As shown, the electric control box body 910 includes: a mounting base plate 911, the mounting base plate 911 is connected to the housing 100, the circuit board 930 is connected to the mounting base plate 911, and the first wiring groove 912 is arranged on the mounting base plate 911. The circuit board 930 and the first wiring groove 912 are both arranged on the corresponding mounting floor, which is convenient for the guide connecting the circuit board 930 to be introduced into the first direction groove, and has the advantage of convenient wire arrangement. Specifically, in this embodiment, the electric control box body 910 also includes an electric control box 900 box body, the mounting floor covers the electric control box 900 box body, and the circuit board 930 and the first wiring groove 912 are located in the electric control box 900 box body. The electric control box body 910 of this embodiment is not limited to the above technical solution. In other implementations, it can also be that the electric control box body includes: a mounting base plate and an electric control box body, the mounting base plate covers the electric control box body, the circuit board is arranged on the mounting base plate, and the first wiring groove is arranged on the electric control box body.

[0070] Furthermore, in this embodiment, if Fig.10 , Fig.11As shown, the circuit board 930 is arranged on the front side of the mounting base plate 911, and the mounting base plate 911 is partially raised toward the front side of the mounting base plate 911 to form the first wiring groove 912. The first wiring groove 912 is formed by the partial protrusion of the mounting base plate 911, and has the advantage of convenient processing of the first wiring groove 912. Specifically, both ends of the first wiring groove 912 described in this embodiment are through, which is convenient for guiding to extend into or extend out from the end of the first wiring groove 912. The first wiring groove of this embodiment is not limited to the above technical solution. In other implementations, it can also be that the front side of the mounting base plate is convexly provided with a first groove wall and a second groove wall spaced apart from each other, and the first groove wall, the second groove wall and the mounting base plate surround the first wiring groove; it can also be that the front side of the mounting base plate is provided with a recessed groove to form the first wiring groove, which has the advantage of convenient processing.

[0071] Furthermore, in this embodiment, if Fig.10 , Fig.11 As shown, the first wiring groove 912 is located at the edge of the mounting plate. Specifically, the first wiring groove 912 is arranged at the edge of the mounting plate, so that the first wiring groove 912 is formed by folding the edge of the mounting plate to form the ridge, thereby forming the first wiring groove 912. Specifically, there is a gap between the groove wall on the outer side of the first wiring groove 912 described in this embodiment and the housing 100, so that the wire is conveniently placed into the first wiring groove 912 through the gap. This embodiment is not limited to the above technical solution. In other embodiments, it can also be that the first wiring groove is located in the middle of the mounting plate, and the first wiring groove can be formed by stamping, which has the advantage of high processing efficiency.

[0072] Further, in this embodiment, the mounting base plate 911 is a metal base plate, so that the groove wall of the first wiring groove 912 can effectively shield the influence of the wire on the electromagnetic compatibility of the circuit board 930. Specifically, the metal base plate can be an iron plate, a copper plate, an alloy part, etc. The mounting base plate 911 in this embodiment is not limited to a metal base plate. In other implementations, the mounting base plate can also be a plastic plate.

[0073] Furthermore, in this embodiment, if Fig.10As shown, the electric control box 900 also includes a circuit mounting plate 920 connected to the mounting base plate 911, the circuit mounting plate 920 has a mounting cavity 921, the circuit board 930 is arranged in the mounting cavity 921, and the first wiring groove 912 is located outside the mounting cavity 921. The circuit mounting plate 920 can protect the circuit board 930 and is conducive to the stable installation of the circuit board 930. Specifically, in this embodiment, the circuit mounting plate 920 is a plastic part with good insulation, which is conducive to improving the safety of the circuit board 930 when working. The circuit mounting plate 920 can also protect the circuit board 930 and reduce the impact of the wire on the circuit board 930. The electric control box 900 in this embodiment is not limited to the above technical solution. In other implementations, it can also be that the front of the mounting base plate is formed with a mounting cavity, and the circuit board is arranged in the mounting cavity.

[0074] Furthermore, in this embodiment, if Fig.10 As shown, the circuit mounting plate 920 is formed with a second wiring groove 922, and the second wiring groove 922 is located outside the mounting cavity 921. The second wiring groove 922 can also be used to arrange the wires of the circuit board 930. The first wiring groove 912 and the second wiring groove 922 can be used to arrange different wires. For example, the first wiring groove 912 is used to arrange strong current wires, and the second wiring groove 922 is used to arrange weak current wires. The classified arrangement of wires is conducive to making the wires in the electric control box 900 more regular. On the other hand, the first wiring groove 912 is made of metal parts and has a good electromagnetic shielding function. The strong current wires are arranged in the first wiring groove 912, which can effectively shield the influence of the strong current wires on the circuit board 930. The second wiring groove 922 of this embodiment is not limited to the above technical solution. In other implementations, it can also be that the second wiring groove is arranged on the front side of the mounting base plate.

[0075] Furthermore, in this embodiment, if Fig.10 , Fig.11 As shown, the first wiring groove 912 and the second wiring groove 922 are respectively located on both sides of the circuit board 930, so that the distance between the first wiring groove 912 and the second wiring groove 922 is large, so as to avoid the wires that need to be arranged in the first wiring groove 912 from being mistakenly arranged in the second wiring groove 922, which is convenient for the classified arrangement of the wires. This embodiment is not limited to the above technical solution. In other implementations, the first wiring groove and the second wiring groove may also be located on the same side of the circuit board, which is conducive to the centralized arrangement of the wires and improves the efficiency of wiring.

[0076] Furthermore, in this embodiment, if Fig.10As shown, the mounting base plate 911 is also provided with a wiring seat 913 and a wire clamp 914. The wiring seat 913 and the wire clamp 914 can be used for the connection and fixation of high-voltage wires. Since high-voltage wires usually have a large diameter, they are difficult to fix during wiring. The wiring seat 913 and the wire clamp 914 can well fix the high-voltage wires on the mounting base plate 911 to prevent the wires from tilting and causing the conductive wires to cross the circuit board 930, thereby affecting the electromagnetic compatibility of the circuit board 930. The wiring seat 913 and the wire clamp 914 described in this embodiment can of course also be used to fix weak wires. The mounting base plate 911 described in this embodiment is not limited to the above technical solution. In other implementations, it can also be that the mounting base plate is also provided with a wiring seat; or, the mounting base plate is also provided with a wire clamp, which is conducive to the fixation of the wires.

[0077] Furthermore, in this embodiment, if Figure 1 , Figure 2 As shown, the electric control box 900 is connected to the outer surface of the housing 100. The fresh air fan is usually installed on the top of the room or on a pipe near the top, which is inconvenient for maintenance and disassembly. The existing fresh air fan usually sets the electric control box 900 in the housing 100. When the electric control box 900 needs to be retrieved, the housing 100 needs to be opened first, making the maintenance of the electric control box 900 more inconvenient. In this embodiment, the electric control box 900 is set on the outside of the housing 100, which is convenient for the staff to directly disassemble or repair the electric control box 900.

[0078] Furthermore, in this embodiment, if Figure 1 , Figure 2 As shown, the fresh air fan includes two fan components 700 spaced apart from each other, and the electric control box 900 is at a considerable distance from the two fan components 700. Specifically, one of the two fan components 700 is arranged in the fresh air duct of the fresh air fan to drive the outdoor fresh air into the room, and the other is arranged in the return air duct of the fresh air fan to drive the indoor air out of the room. In this embodiment, the two fan components 700 have the same structure and are at a considerable distance from the electric control box 900, so the two fan components 700 can be interchanged with each other at will and can both be connected to the electric control box 900, so that there is no position requirement for the installation of the fan component 700, avoiding rework caused by incorrect installation position of the fan component 700, which is beneficial to improving the efficiency of the fresh air fan assembly.

[0079] Furthermore, in this embodiment, if Fig.10 , Fig.12As shown, the electric control box 900 is provided with two first wire holes 940, and the housing 100 is provided with a second wire hole 950 corresponding to each of the first wire holes 940. The distance from one first wire hole 940 to the adjacent fan component 700 is equivalent to the distance from another first wire hole 940 to another fan component 700, so that the positions of the two fan components 700 are interchanged, and the wires on the fan component 700 can still be connected to the circuit board 930 through the first wire hole 940 and the second wire hole 950. The wires of the fan component 700 connected to the circuit board 930 can pass through the second wire hole 950 and the first wire hole 940 in sequence to connect to the circuit, so that the wires are not exposed outside the new fan, which is conducive to protecting the wires.

[0080] Furthermore, in this embodiment, if Fig.10 As shown, a fresh air fan terminal 960 and a return air fan terminal 970 are provided on the circuit board 930, and the distances between the fresh air fan terminal 960 and the two first wire holes 940 are different. Specifically, the fresh air fan terminal 960 is used to connect the fan component 700 in the fresh air duct, and the return air fan terminal 970 is used to connect the fan component 700 in the return air duct. When the circuit board 930 is installed upside down in the electric control box 900, the position between the fresh air fan terminal 960 and the two first wire holes 940 changes, thereby prompting the staff that the circuit board 930 is installed incorrectly. This embodiment is not limited to the above technical solution. In other implementations, it can also be that the distances between the return air fan terminal and the two first wire holes are different, which has the function of prompting whether the circuit board is installed correctly.

[0081] Furthermore, in this embodiment, if Figure 2 As shown, a fresh air duct and a return air duct are formed in the housing 100, and the fan component 700 is provided in both the fresh air duct and the return air duct; the length of the wire of the fresh air fan terminal 960 connected to the fan component 700 in the fresh air duct is less than the distance from the fresh air fan terminal 960 to the fan component 700 in the return air duct. When the electric control box 900 is installed upside down, the length of the wire of the fresh air fan terminal 960 is not enough to connect the fan component 700 in the return air duct, thereby achieving foolproofing. Specifically, the fan component 700 in this embodiment has a first section of wire, and the lengths of the first sections of wires of the two fan components 700 are equivalent, and the fresh air fan terminal 960 has a second section of wire, and the length of the second section of wire can be connected to the first section of wire of the fan component 700 in the fresh air duct, but is not enough to connect to the first section of wire of the fan component 700 in the return air duct.

[0082] This embodiment is not limited to the above technical solution. In other embodiments, a fresh air duct and a return air duct may be formed in the housing, and the fan component is provided in both the fresh air duct and the return air duct; the length of the wire connecting the return air fan terminal to the fan component in the return air duct is less than the distance from the fresh air fan terminal to the fan component in the return air duct. This allows the electric control box to have a foolproof function to prevent the return air fan terminal from connecting to the fan component in the fresh air duct.

[0083] In the embodiment of the present invention, Figure 2 , Figure 3 As shown, the housing 100 of the fresh air machine has a fresh air inlet 110; the heat exchange core 600 is arranged in the housing 100; the fresh air duct member 200 is arranged in the housing 100, the fresh air duct member 200 is connected with the fresh air inlet 110 and the heat exchange core 600, and the fresh air duct member 200 is provided with a plug hole 220 connected with the fresh air duct, and the plug hole 220 is arranged close to the heat exchange core 600; the sensor assembly 500 is inserted in the plug hole 220. Specifically, the fresh air duct member 200 can form a channel with the housing 100, and the outdoor fresh air enters from the fresh air inlet 110 of the housing 100, and can pass through the fresh air duct member 200 to enter the heat exchange core 600 for heat exchange. The sensor assembly 500 is used to measure the fresh air in the fresh air duct member 200 to monitor the air quality of the fresh air.

[0084] The technical solution of the present invention adopts a socket 220 provided on the fresh air duct so that the sensor assembly 500 can be disassembled and assembled by plugging and unplugging, which has the advantage of convenient disassembly and assembly, and is convenient for the staff to inspect and repair the sensor assembly 500. The sensor assembly 500 is arranged inside the housing 100, so that the housing 100 can protect the sensor and prevent the sensor assembly 500 from being damaged during the transportation of the fresh air blower. The airflow at the heat exchange core 600 is more stable than the airflow at the fresh air inlet 110. The sensor assembly 500 is arranged close to the heat exchange core 600, so that the airflow detected by the sensor is more stable, and the detection result obtained is more stable and more accurate.

[0085] Furthermore, in this implementation, if Figure 1 , Figure 2As shown, the housing 100 has an opening 150, and the housing 100 includes a panel 160 that can detachably cover the opening 150; the socket 220 has a socket 221, and the socket 221 is arranged on the surface of the fresh air duct member 200 facing the panel 160, and the sensor assembly 500 is inserted into the socket 220 through the socket 221. When the sensor assembly 500 is disassembled, it is only necessary to remove the panel 160 of the housing 100, and the socket 220 on the fresh air duct member 200 can be seen, which is convenient for the staff to take out the sensor assembly 500 from the socket 220. The installation process of the sensor assembly 500 is opposite to its disassembly process, and the disassembly and installation process of the sensor assembly 500 has the advantages of convenience and efficiency. The sensor assembly 500 described in this embodiment is not limited to the above technical solution. In other embodiments, the shell may have an opening, and the shell includes a top plate that can removably cover the opening; the socket has a plug, and the plug is arranged on the surface of the fresh air duct member facing the top plate, and the sensor assembly is inserted into the socket through the plug, which has the advantage of easy disassembly and assembly of the sensor assembly.

[0086] Furthermore, in this implementation, if Figure 3 , Fig.13 As shown, the surface of the fresh air duct member 200 facing the heat exchange core 600 is provided with a vent 230, and the vent 230 is connected to the jack 220. The sensor assembly 500 includes: a mounting box 510, and a detection hole 511 is provided on the surface of the mounting box 510 facing the vent 230; and a sensor, and the sensor is arranged in the mounting box 510. The sensor is arranged in the mounting box 510, and the mounting box 510 can effectively protect the sensor and prevent the sensor from being damaged during installation and removal. The detection hole 511 connects the inside and outside of the mounting box 510, and the air entering the housing 100 from the fresh air inlet 110 can flow to the detection hole 511 through the vent 230, and then enter the mounting box 510 from the detection hole 511, so that the sensor in the mounting box 510 can detect the quality of the fresh air. The present embodiment is not limited to the above technical solution. In other embodiments, the socket may be a through hole, and the socket has an opening located on the inner wall of the fresh air duct member. The sensor assembly includes: a mounting box, a detection hole is provided on the surface of the mounting box close to the opening; and a sensor, the sensor is arranged in the mounting box, and the sensor detects the quality of the fresh air through the detection hole.

[0087] Furthermore, in this implementation, if Figure 2 , Fig.16As shown, the outer surface of the installation box 510 is provided with a lug 512, the lug 512 is located outside the socket 220, the lug 512 abuts against the fresh air duct member 200, the lug 512 is provided with a first screw hole, and the surface of the fresh air duct member 200 facing the panel 160 is provided with a second screw hole adapted to the first screw hole. Specifically, the installation box 510 is connected to the fresh air duct member 200 by screws, and the screws pass through the second screw hole and the first screw hole in sequence, so that the installation box 510 is fixed on the fresh air duct member 200. When installing the sensor assembly 500, the sensor assembly 500 is first inserted into the socket 220 from the socket 221 until the lug 512 abuts against the fresh air duct. At this time, the sensor assembly 500 has been pre-positioned, and the staff only needs to drive in the screw to complete the installation. In this embodiment, the sensor assembly 500 can be fixed by a single screw, which has the effect of convenient sensor disassembly and assembly and stable installation.

[0088] Furthermore, in this implementation, if Fig.18 As shown, the installation box 510 is snap-connected with the sensor. When assembling the sensor and the installation box 510, the sensor can be fixed by applying pressure to install the sensor in place, which has the advantage of high assembly efficiency of the sensor assembly 500. The installation box 510 and the sensor in this embodiment are not limited to the above technical solution. In other embodiments, the installation box and the sensor can also be connected by screws; or the installation box and the sensor can be bonded, which has the advantage of stable sensor installation.

[0089] Furthermore, in this implementation, if Fig.17As shown, the inner surface of the installation box 510 has a mounting position 513, the detection hole 511 is arranged at the installation position 513, and the inner surface of the installation box 510 is convexly provided with a plurality of hooks 514, the plurality of hooks 514 are arranged around the installation position 513, the free end of the hook 514 has a barb, the sensor is arranged at the installation position 513, and the barb abuts against the surface of the sensor away from the detection hole 511. Specifically, the hook 514 includes: a connecting arm, one end of the connecting arm is connected to the installation box 510, and the other end is provided with the barb. The plurality of hooks 514 surround the sensor to limit the movement of the sensor along the plane of the installation position 513, and the barb abuts against the surface of the sensor away from the detection hole 511 to limit the displacement of the sensor on the normal line of the installation position 513, so that the sensor is fixed. The sensor assembly 500 described in this embodiment is not limited to the above technical solution. In other implementations, the installation box may be provided with a bayonet, and the sensor may be provided with a buckle adapted to the bayonet. The buckle is inserted into the bayonet to achieve connection between the sensor and the installation box, which has the advantage of high assembly efficiency of the sensor assembly.

[0090] Furthermore, in this embodiment, if Fig.17 As shown, the mounting position 513 is provided with a mounting convex rib 516, and the mounting convex rib 516 abuts against the surface of the sensor close to the detection hole 511. The convex rib 516 abuts against the sensor to prevent the sensor from blocking the detection hole 511 on the mounting position 513, so that the gas can smoothly flow into the mounting box 510 through the detection hole 511. The detection hole 511 is arranged directly opposite to the sensor, so that the sensor can effectively detect the quality of the fresh air.

[0091] Furthermore, in this embodiment, if Fig.17 , Fig.18 As shown, the sensor is provided with a positioning hole, and the mounting position 513 is provided with a positioning post 517, and the positioning post 517 passes through the positioning hole. The positioning post 517 has a guiding function, so that the sensor can be installed in place during installation, which is conducive to improving the efficiency of sensor installation. At the same time, the positioning post 517 cooperates with the positioning hole to make the installation of the sensor in the mounting box 510 more stable.

[0092] Furthermore, in this embodiment, if Fig.16As shown, the installation box 510 includes: a sensor box body 518, in which the sensor is arranged; and a box cover 519, which is snap-connected to the sensor box body 518. The sensor assembly 500 is assembled, and the sensor is first installed in the sensor box body 518, and then the box cover 519 covers the sensor box body 518, so as to complete the installation, which has the advantages of efficient and convenient assembly. The installation box 510 described in this embodiment is not limited to the above technical solution. In other implementations, the sensor box body and the box cover may be connected by screws; or the sensor box body and the box cover may be rotatably connected to facilitate the assembly of the sensor assembly.

[0093] Furthermore, in this embodiment, if Fig.16 , Fig.17 As shown, the installation box 510 is provided with a wiring hole 540, and the wiring hole 540 allows the wires of the sensor to extend out of the installation box 510. The sensor is connected to the electric control box 900 of the fresh air fan through wires. The wires extend out of the wiring hole 540, which can prevent the wires of the sensor from being clamped by the box cover 519, effectively protect the wires, and make the arrangement of the wires more regular.

[0094] Furthermore, in this embodiment, the sensor includes a PM2.5 sensor 520 and a humidity sensor 530. The sensor can detect the PM2.5 index in the fresh air and the humidity of the fresh air. A variety of sensors are concentrated in the installation box 510, and a variety of sensors can be installed in the fresh air fan at one time, which has the advantage of improving the efficiency of sensor installation. The sensor described in this embodiment is not limited to the above technical solution. In other embodiments, the sensor may include a PM2.5 sensor; or the sensor includes a humidity sensor; or the sensor includes a PM2.5 sensor, a humidity sensor and a formaldehyde sensor. The sensor assembly has the advantage of more comprehensive air detection.

[0095] In the embodiment of the present invention, Figure 2 , Figure 3 , Figure 7As shown, the fresh air duct member 200 and the return air duct member 300 of the fresh air fan are both arranged in the outer shell 100; the fresh air duct member 200 and the return air duct member 300 form a mounting groove 180 with the outer shell 100; the fresh air duct member 200 is used to form a part of the fresh air duct, and the return air duct member 300 is used to form a part of the return air duct; the heat exchange core 600 is arranged in the mounting groove 180, and the side of the fresh air duct member 200 facing the heat exchange core 600 and the side of the return air duct member 300 facing the heat exchange core 600 are both provided with a guide portion 240, and the guide portion 240 has a guide surface 241 abutting against the heat exchange core 600. Specifically, the fresh air duct member 200 and the return air duct member 300 are connected to the heat exchange core 600, so that the heat exchange core 600 is connected to the fresh air duct and the return air duct, so that the heat exchange core 600 can exchange heat between the fresh air and the return air. The fresh air fan described in this embodiment is not limited to the above technical solution. In other embodiments, the fresh air duct member is used to form a fresh air duct, and the return air duct member is used to form a return air duct; the fresh air duct member is provided with a guide portion 240 on the side facing the heat exchange core; or the return air duct member is provided with a guide portion 240 on the side facing the heat exchange core.

[0096] The technical solution of the present invention adopts the fresh air duct member 200, the return air duct member 300 and the housing 100 to form an installation groove 180 for the installation of the heat exchange core 600, and at the same time, the heat exchange core 600 can be abutted with the fresh air duct member 200 and the return air duct member 300 after installation, so that the heat exchange core 600 is connected with the fresh air duct and the return air duct. The guide portion 240 is used to guide the installation of the heat exchange core 600, improving the convenience of the installation of the heat exchange core 600, and the guide surface 241 abuts against the heat exchange core 600, which is conducive to improving the stability of the installation of the heat exchange core 600.

[0097] Furthermore, in this embodiment, if Fig.14 , Fig.15As shown, the end of the fresh air duct member 200 and the end of the return air duct member 300 are both provided with the guide portion 240. The guide portion 240 of the fresh air duct member 200 and the guide portion 240 of the return air duct are arranged at the end, which can prevent the guide portion 240 from blocking the opening on the heat exchange core 600, so as to ensure that the heat exchange core 600 can fully exchange heat. The fresh air duct member 200 and the return air duct member 300 described in this embodiment are not limited to the above technical scheme. In other implementations, the middle part of the fresh air duct member and the middle part of the return air duct member may also be provided with the guide portion 240; or the middle part and the end part of the fresh air duct are both provided with the guide portion 240, and the middle part and the end part of the return air duct are both provided with the guide portion 240, which has the advantage of stable installation of the heat exchange core.

[0098] Furthermore, in this embodiment, if Figure 2 , Figure 3 As shown, the fresh air duct member 200 and the return air duct member 300 are located on both sides of the heat exchange core 600, so that the guide portion 240 is respectively located on both sides of the heat exchange core 600, and the guiding effect is good, which is conducive to making the heat exchange core 600 more stably installed in the installation groove 180. The fresh air duct member 200 and the return air duct member 300 in this embodiment are not limited to the above technical solution. In other implementations, the fresh air duct member and the return air duct member are connected, and the return air duct member is connected to the shell. The guide portion 240 on the fresh air duct member and the guide portion 240 on the return air duct member respectively abut against two adjacent side surfaces of the heat exchange core, and the guide portion 240 can guide the installation of the heat exchange core.

[0099] Furthermore, in this embodiment, if Figure 7As shown, the housing 100 includes a mounting plate, and the fresh air duct member 200 and the return air duct member 300 are both connected to the mounting plate. The mounting plate, the fresh air duct member 200 and the return air duct member 300 form the mounting groove 180, and the surface of the fresh air duct member 200 away from the mounting plate and the surface of the return air duct member 300 away from the mounting plate are provided with a support member 190, and the support member 190 can enhance the strength of the fresh air duct member 200 and the return air duct member 300. Specifically, in this embodiment, the mounting plate is a back plate 170. Since the installation of the heat exchange core 600 will abut against the fresh air duct member 200 and the return air duct member 300, the fresh air duct member 200 and the return air duct member 300 have strength requirements. In order to avoid damage to the fresh air duct member 200 and the return air duct member 300 when the heat exchange core 600 is installed, a support member 190 is provided on the fresh air duct member 200 and the return air duct member 300. The support member 190 is provided on the surface of the fresh air duct member 200 and the return air duct member 300 away from the mounting plate, and has the advantages of large installation space and convenient installation. The support member 190 in this embodiment is not limited to the above technical solution. In other implementations, it can also be that the surface of the fresh air duct member away from the mounting plate is provided with a support member; or the surface of the return air duct member away from the mounting plate is provided with a support member.

[0100] Furthermore, in this embodiment, if Figure 2 , Figure 3 As shown, the heat exchange core 600 is in the shape of a polygonal column, and the heat exchange core 600 has a first side surface 610 located outside the mounting groove 180, and the support member 190 has a first abutting surface 191 abutting against the first side surface 610. Specifically, after the heat exchange core 600 is placed in the mounting groove 180, it has a portion protruding from the mounting groove 180, and the protruding portion has the first side surface 610, and the support member 190 abuts against the first side surface 610. Specifically, the heat exchange core 600 is in the shape of a polygonal column, so that the surface abutted by the guide surface 241 is set at an angle with the first side surface 610, and the guide surface 241 and the first abutting surface 191 can jointly clamp the heat exchange core 600, so that the heat exchange core 600 is fixed in the mounting groove 180. Specifically, in this embodiment, the heat exchange core 600 is in the shape of a hexagonal prism, but is not limited to the hexagonal prism. In other embodiments, the heat exchange core may be in the shape of an octagonal prism or a pentagonal prism.

[0101] Furthermore, in this embodiment, if Figure 2 , Figure 8As shown, the heat exchange core 600 also has a second side surface 620 located in the mounting groove 180, the second side surface 620 is adjacent to the first side surface 610, and the support member 190 also has a second abutting surface 192 abutting the second side surface 620. The first side surface 610 and the second side surface 620 are arranged at an angle, and the first abutting surface 191 and the second abutting surface 192 are correspondingly arranged at an angle. The two support members 190 are arranged on both sides of the heat exchange core 600, so that the two support members 190 respectively fix the two corners of the heat exchange core 600, so that the heat exchange core 600 is fixed. Fixing the heat exchange core 600 by the support member 190 with high mechanical strength has the advantage of stable fixing effect.

[0102] Furthermore, in the present embodiment, the guide surface 241 is an inclined surface that cooperates with the second side surface 620. After the heat exchange core 600 is installed, the guide surface 241 fits with the heat exchange core 600, which has the advantages of good guiding effect for the installation of the heat exchange core and good stability after installation. The guide surface 241 in the present embodiment is not limited to the above technical solution. In other implementations, the guide surface may include an arc surface close to the support member and a plane adjacent to the arc surface away from the side of the support member, which has the advantage of facilitating the alignment of the heat exchange core with the installation groove, and is beneficial to improving the installation efficiency of the heat exchange core.

[0103] Specifically, this embodiment has two support members 190, one of which is as follows: Fig. 9 As shown, the support member 190 includes: a plate body connected to the fresh air duct member 200 or the return air duct member 300; and a contact buckle 193 having the first contact surface 191, the contact buckle 193 is rotatably connected to the plate body, and the contact buckle 193 has a first state of contacting with the first side surface 610 and a second state of being separated from the first side surface 610. The contact buckle 193 can be rotated to make the first contact surface 191 separate from the first side surface 610, so as to release the fastening state of the support member 190 to the heat exchange core 600, and facilitate the removal of the support member 190 from the mounting groove 180. When installing the heat exchanger, the contact buckle 193 is first rotated to one side of the mounting groove 180 to avoid the notch of the mounting groove 180, and then the heat exchanger is placed in the mounting groove 180, and then the contact buckle 193 is rotated to the first state by rotation to complete the fixing of the heat exchanger.

[0104] Furthermore, in this embodiment, if Figure 7As shown, the fresh air fan also includes a bypass duct member 800 located in the mounting groove 180, the bypass duct member 800 is connected to one end of the heat exchange core 600, the bypass duct member 800 and the shell 100 form a bypass duct, and the bypass duct connects the fresh air duct and the return air duct. Specifically, one end of the heat exchange core 600 abuts against the bypass duct member 800, and the other end abuts against the shell 100, so that the heat exchange core 600 is fastened in the mounting groove 180. The bypass duct is used to mix the air of the return air duct into the fresh air duct, so as to bring the heat or cold of the indoor air of the return air duct to the fresh air in the fresh air duct, so that the temperature of the fresh air entering the room is more suitable. This embodiment is not limited to the above technical solution. In other implementations, both ends of the heat exchange core may abut against the shell.

[0105] Furthermore, in this embodiment, the fresh air duct member 200 and the return air duct member 300 are foam members.

[0106] In the embodiment of the present invention, Figure 3 , Fig.13 , Fig.14 As shown, the fresh air fan includes a filter 400, the housing 100 has a fresh air inlet 110, a fresh air outlet 120, a return air inlet 130, and a return air outlet 140, the housing 100 has a fresh air duct connecting the fresh air inlet 110 and the fresh air outlet 120, and a return air duct connecting the return air inlet 130 and the return air outlet 140, the fresh air duct and the return air duct are spaced apart from each other; the inner wall surface of the fresh air duct and the inner wall surface of the return air duct are provided with an elastic mounting portion 210, and the elastic mounting portion 210 is provided with a slot 211; and the filter 400 is inserted in the slot 211. In the existing fresh air blower, the slot 211 for installing the filter 400 is usually made of hard materials such as sheet metal or plastic parts, and the strength of the filter 400 is usually low. Therefore, when the slot 211 formed by the hard material is too large, the installation of the filter 400 is unstable and prone to shaking. When the slot 211 formed by the hard material is too small, the filter 400 will be deformed during installation, causing damage to the filter 400. Therefore, hard materials have high requirements for the dimensional accuracy of the slot 211 and are difficult to process. The elastic mounting portion 210 described in this embodiment is not limited to the above technical solution. In other implementations, the inner wall surface of the fresh air duct may be provided with an elastic mounting portion; or the inner wall surface of the return air duct may be provided with an elastic mounting portion.

[0107] The present invention adopts a technical solution to open a slot 211 on the elastic mounting portion 210, so that the slot wall of the slot 211 is elastic. When the filter 400 is inserted into the slot 211, the slot wall of the slot 211 is deformed when squeezed by the filter 400, which can prevent the slot wall from damaging the filter 400, making the insertion and removal of the filter 400 safer. After the filter 400 is inserted into the slot 211, it is squeezed by the rebound force of the slot wall, so that the filter 400 can be stably fixed in the slot 211. Due to the elastic characteristics of the elastic mounting portion 210, the machining accuracy of the slot 211 can be effectively reduced, which is conducive to improving the machining efficiency of the slot 211.

[0108] Furthermore, in the present embodiment, the elastic mounting portion 210 is a foam member. The foam member has the characteristic of being easy to process, and it is easy to open the slot 211 on the elastic mounting portion 210; at the same time, the foam member also has the advantage of being light in weight, which is beneficial to reducing the weight of the fresh air blower. When the filter 400 is inserted into the slot 211 of the foam member, the filter 400 squeezes the foam member, causing the foam member to deform, thereby causing the slot 211 to deform into a size suitable for the size of the filter 400, which has the advantage of safe and stable installation of the filter 400. The present embodiment is not limited to the above technical solution, and in other implementations, the elastic mounting portion may be a rubber member; or, the elastic mounting portion includes two relatively arranged spring sheets, and the two spring sheets form the slot, so that the filter assembly and disassembly process is safer.

[0109] Furthermore, in this embodiment, if Figure 2 , Figure 3As shown, the fresh air fan also includes a duct member, the duct member is used to form at least part of the fresh air duct or at least part of the return air duct, the duct member is a foam duct member, and the mounting portion is integrally formed with the duct member. Specifically, in this embodiment, the fresh air fan includes two duct members, one of which is a fresh air duct member 200, which is used to form part of the fresh air duct, and the other duct member is a return air duct member 300, which is used to form part of the return air duct. The two duct members are both provided with the elastic mounting portion 210, and the duct member and the elastic mounting portion 210 are integrally formed. The duct member and the elastic mounting portion 210 are both foam members, which have the advantage of convenient installation. The duct member made of foam material has the advantages of light weight, easy processing, low price and good thermal insulation effect, which reduces the loss of heat or cold of indoor return air and improves the utilization efficiency of indoor air energy. The duct member described in the present embodiment is not limited to the above-mentioned technical solution. In other implementations, the duct member may be used to form at least part of the fresh air duct; or, the duct member may be used to form at least part of the return air duct; or, the fresh air fan only includes one duct member, and the duct member is used to form the fresh air duct and the return air duct. The duct member is integrally formed, which has the advantage of easy assembly of the fresh air fan.

[0110] Furthermore, in this embodiment, if Figure 2 , Figure 3 As shown, the inner wall surface of the fresh air duct and the inner wall surface of the return air duct are both provided with two elastic mounting parts 210, the notches of the slots 211 of the two elastic mounting parts 210 are arranged relatively, and the two ends of the filter 400 are respectively arranged in the two slots 211. The two slots 211 respectively fix the two ends of the filter 400, so that the installation of the filter 400 is more stable. The elastic mounting part 210 described in this embodiment is not limited to the above technical solution. In other implementations, it can also be that the elastic mounting part extends along the radial direction of the fresh air duct, the elastic mounting part has two ends of the slot passing through, and the middle part of the filter is arranged in the slot, which has the advantage of convenient installation of the filter.

[0111] Furthermore, in this embodiment, if Figure 1 , Figure 2As shown, the housing 100 has an opening 150, and the housing 100 includes a panel 160 that can detachably cover the opening 150, and a back plate 170 that is arranged opposite to the panel 160. The elastic mounting portion 210 has a mounting surface facing the panel 160, and the slot 211 extends from the back plate 170 to the panel 160 and passes through the mounting surface. When the filter 400 is disassembled, the panel 160 is removed, and then the filter 400 is pulled out of the slot 211, and then taken out from the opening 150; when the filter is installed, the process is opposite to the process of removing the filter, and the filter 400 has the advantage of convenient disassembly and assembly.

[0112] Further, in this embodiment, the slot 211 has an insertion end located on the installation surface, and the slot width of the insertion end gradually increases from the back plate 170 to the panel 160. Specifically, the insertion end is trumpet-shaped, which has the advantage of facilitating the alignment of the filter 400 with the slot 211, and is conducive to improving the efficiency and convenience of installing the filter 400.

[0113] Furthermore, in this embodiment, if Figure 2 As shown, the fresh air fan also includes a support member 190, and the two ends of the support member 190 are respectively connected to the two elastic mounting parts 210. Specifically, the support member 190 is a sheet metal part, but is not limited to a sheet metal part. In other embodiments, it can also be a plastic part. The support member 190 can effectively improve the mechanical strength of the air duct part. Since in this embodiment, the air duct part is a foam part, the mechanical strength of the air duct part is insufficient, and the support member 190 needs to be used to compensate. The support member 190 connects the two elastic mounting parts 210, which can prevent the two elastic mounting parts 210 from being excessively deformed during disassembly and assembly, so that the distance between the two elastic mounting parts 210 becomes too large, thereby causing the filter 400 to fall out.

[0114] Furthermore, in this embodiment, if Figure 2 As shown, the support member 190 is located between the elastic mounting portion 210 and the panel 160, and the support member 190 is provided with an avoidance hole for avoiding the two slots 211, and the avoidance hole extends from one of the two elastic mounting portions 210 to the other. When the filter 400 is installed, it can pass through the avoidance hole of the support member 190 and be inserted into the slot 211 to complete the installation of the filter 400. The avoidance hole can ensure the efficient installation of the filter 400.

[0115] Furthermore, in this embodiment, if Figure 3As shown, the heat exchange core 600 is formed with a first heat exchange channel and a second heat exchange channel spaced from each other, the fresh air duct includes the first heat exchange channel, and the return air duct includes the second heat exchange channel; the filter 400 is provided between the fresh air inlet 110 and the heat exchange core 600; the filter 400 is provided between the return air inlet 130 and the heat exchange core 600. The filter 400 between the fresh air inlet 110 and the heat exchange core 600 can be used to filter and purify the fresh air outside the room, so that the fresh air entering the room is cleaner, which can improve the comfort of customers. The first heat exchange channel and the second heat exchange channel have the characteristics of small cross-sectional areas. The two filters 400 can protect the heat exchange core 600 and reduce the blockage of the first heat exchange channel and the second heat exchange duct.

[0116] Furthermore, in this embodiment, if Figure 1 , Figure 2 As shown, the fresh air inlet 110 and the return air inlet 130 are respectively located on both sides of the heat exchange core 600, and the two filters 400 are respectively arranged on both sides of the heat exchange core 600, so that each filter 400 has a larger installation space, which is convenient for the installation of the filter 400.

[0117] The sensor assembly 500 described in this embodiment is arranged between the filter 400 and the heat exchange core 600. The sensor assembly 500 measures the filtered fresh air, which can not only detect the filtering effect of the filter 400, but also be used for analysis to compare whether the filtered air meets the standards.

[0118] Specifically, in this embodiment, when assembling the fresh air fan, the fresh air duct component 200 and the return air duct component 300 are first placed in the outer casing 100 to form the installation groove 180, and then the heat exchange core 600 is installed in the installation groove 180 under the guidance of the guide part 240, and then the heat exchange core 600 is fixed by the abutment buckle 193 of the support component 190, thereby forming the fresh air duct and the return air duct.

[0119] It should be noted that, in this embodiment, the fresh air duct component 200, the return air duct component 300 and the bypass air duct component 800 are all foam components. The fresh air fan described in this embodiment has the advantages of good duct insulation effect, light overall weight, and easy processing and disassembly of duct components.

[0120] When the fresh air fan described in this embodiment is working, the fan component 700 in the fresh air duct works to draw outdoor air from the fresh air inlet 110 into the fresh air duct in the outer shell 100, and then passes through the filter 400, and then is detected by the sensor assembly 500, and then enters the first air duct of the heat exchange core 600; at the same time, the fan component 700 in the return air duct draws indoor air from the return air inlet 130 into the return air duct, and then passes through the filter 400 in the return air duct and enters the second air duct of the heat exchange core 600. The airflows in the first air duct and the second air duct realize heat exchange in the heat exchange core 600, so that the temperature of the indoor fresh air is closer to the indoor temperature, so as to improve the comfort of blowing fresh air.

[0121] In this embodiment, when the outdoor temperature is too low or too high and exceeds the processing range of the heat exchange core 600, it can be adjusted through the bypass air duct, the air valve assembly 820 opens the valve 821, and the bypass air duct directly guides part of the air in the return air duct to the fresh air duct between the fresh air inlet 110 and the heat exchange core 600, so that the fresh air is mixed with the indoor air before entering the heat exchange core 600, so that the temperature of the fresh air is closer to the indoor temperature, so as to enter the processing range of the heat exchange core 600. The bypass air duct cooperates with the foam air duct member to reduce the probability of condensation in the housing 100.

[0122] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A new air blower, characterized in that: The invention comprises a housing, a fan component, a heat exchange core, a fresh air duct component and a return air duct component arranged in the housing, wherein the fresh air duct component, the heat exchange core and the return air duct component separate the interior of the housing into a fresh air duct and a return air duct, and the fresh air duct component, the return air duct component and the housing form a mounting groove for mounting the heat exchange core; the fan component comprises: A motor mounting frame, the motor mounting frame is connected to the housing; A motor connected to the motor mounting frame; a wind wheel connected to the motor; and A volute, wherein the wind wheel is arranged in the volute, and the volute is connected to the motor mounting frame; The fresh air fan also includes a bypass duct member, which forms a bypass duct with the shell, and the bypass duct member is connected to the fresh air duct member and the return air duct member, and the bypass duct connects the fresh air duct and the return air duct, and the bypass duct is used to supply the indoor air in the return air duct to the fresh air duct, so that the outdoor fresh air in the fresh air duct and the indoor air in the return air duct are mixed and enter the heat exchange core; the bypass duct is located between the fresh air duct member and the return air duct member, and the bypass duct abuts against the fresh air duct member, the return air duct member, the shell and the heat exchange core; the shell has a fresh air inlet, a fresh air outlet, a return air inlet and a return air outlet, the fresh air duct connects the fresh air inlet and the fresh air outlet, the return air duct connects the return air inlet and the return air outlet, and one end of the bypass duct member is arranged close to the fresh air inlet.

2. The fresh air blower according to claim 1, characterized in that: The motor mounting frame is provided with a calabash hole, and the motor mounting frame is connected to the shell by screws passing through the calabash hole.

3. The fresh air blower according to claim 1, characterized in that: A first air duct and a second air duct spaced apart from each other are formed inside the heat exchange core; the fresh air duct member and the return air duct member are respectively connected to two sides of the heat exchange core; The fresh air duct includes the first air duct, and the return air duct includes the second air duct; the fan component is disposed in both the fresh air duct and the return air duct.

4. The fresh air blower according to claim 1, characterized in that: The fresh air fan further comprises: an air valve assembly, wherein the air valve assembly is connected to the bypass air duct member, and the air valve assembly comprises a valve, and the valve movably blocks the bypass air duct.

5. The fresh air blower according to claim 4, characterized in that: The air valve assembly also includes: A damper bracket is connected to the bypass duct member, and the valve is rotatably connected to the damper bracket; and A motor is installed on the air valve bracket, and the motor is connected to the valve.

6. The fresh air blower according to claim 5, characterized in that: A mounting through hole is provided on the side of the bypass air duct member, the air valve bracket is connected to the side of the bypass air duct, and the valve passes through the mounting through hole and is arranged in the bypass air duct.

7. The fresh air blower according to claim 1, characterized in that: The fresh air duct member, the return air duct member and the bypass air duct member are all foam members.

8. The fresh air blower according to any one of claims 3 to 7, characterized in that: The fresh air duct component and the return air duct component are both integrally formed.

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