Air mixing prevention structure of fresh air machine

Abstract

The utility model relates to the technical field of fresh air machines, and discloses an air mixing prevention structure of a fresh air machine, which comprises a machine body, an air return port and an air inlet are arranged on one indoor side of the machine body, a fresh air port and an air outlet are arranged on one outdoor side of the machine body, and a support is arranged on one outdoor side of the machine body. The support is provided with a shear fork assembly and a driving assembly used for driving the shear fork assembly to stretch out and draw back, the shear fork assembly is provided with a folding baffle, and the folding baffle is arranged between the fresh air opening and the exhaust opening. When the driving assembly drives the shear fork assembly to stretch, the folding baffle located on the shear fork assembly is also unfolded, the folding assembly in the unfolded state can separate fresh air at the fresh air opening and indoor air at the air outlet, the fresh air at the fresh air opening and the indoor air at the air outlet can be prevented from being mixed, and the air mixing prevention effect is achieved. According to the structure, indoor air exhausted from the air exhaust opening and fresh air entering from the fresh air opening can be separated, and the fresh air is prevented from being polluted by dirty indoor air.

Description

Technical Field

[0001] This utility model relates to the field of fresh air system technology, specifically to a fresh air system anti-mixed air structure. Background Technology

[0002] A fresh air system is an air purification device that expels polluted indoor air to the outside while simultaneously introducing fresh outdoor air into the room to improve indoor air quality.

[0003] The fresh air unit consists of a main body, with a return air inlet and an air inlet on the indoor side, and a fresh air vent and an exhaust vent on the outdoor side. Fresh air enters the main body through the fresh air vent and then enters the room through the air inlet. Indoor air enters the main body through the return air vent and then exits through the exhaust vent.

[0004] Because the fresh air inlet and the exhaust vent are located on the same side of the unit, the polluted indoor air discharged from the exhaust vent is easily carried back into the room by the fresh air, causing pollution and reducing indoor air quality.

[0005] For example, patent application number CN202311033324.0 discloses a "fresh air system". Figure 7 As shown, the return air inlet 11 and the air inlet 12 are located on the same side, and the fresh air inlet 13 and the exhaust air outlet 14 are located on the same side, which also easily leads to the problem of mixed air pollution.

[0006] Therefore, how to separate the indoor air discharged from the exhaust vent from the fresh air intake and prevent the fresh air from being polluted by the polluted indoor air is a technical problem that needs to be solved. Utility Model Content

[0007] To address the aforementioned shortcomings of existing technologies, this invention proposes an anti-mixing structure for a fresh air system. This invention can separate indoor air discharged from the exhaust vent from the fresh air intake, preventing the fresh air from being polluted by the polluted indoor air.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A fresh air ventilator with an anti-mixed air structure includes a body, an indoor air inlet and an outdoor air outlet, a bracket on the outdoor side of the body, a scissor lift assembly and a drive assembly for extending and retracting the scissor lift assembly, and a folding baffle on the scissor lift assembly located between the fresh air inlet and the outdoor air outlet.

[0010] Furthermore, the scissor lift assembly includes several sets of scissor lift units, all of which are arranged sequentially from near to far on the outdoor side of the fuselage. Each scissor lift unit includes a first fork and a second fork that are arranged in a cross configuration. The intersection of the first fork and the second fork is rotatably connected by a pivot. In two adjacent sets of scissor lift units, the end of the first fork in one set of scissor lift units is rotatably connected to the end of the second fork in another set of scissor lift units.

[0011] Furthermore, the folding baffle includes several sets of folding units, with one folding unit between two adjacent rotating shafts. The folding unit includes a first plate and a second plate that are rotatably connected. The first plate is rotatably connected to one of the two adjacent rotating shafts at the end away from the second plate, and the second plate is rotatably connected to the other of the two adjacent rotating shafts at the end away from the first plate.

[0012] Furthermore, the bracket includes a first support and a second support, both of which are connected to the machine body. In the scissor lift unit closest to the machine body, the upper end of the rotating shaft is connected to the first support, and the lower end of the rotating shaft is connected to the second support.

[0013] Furthermore, both the first support and the second support are detachably connected to the body.

[0014] Furthermore, the drive assembly includes a telescopic rod located below the second support, with one end of the telescopic rod connected to the second support and the other end connected to the pivot in the second scissor lift unit located near the machine body.

[0015] Furthermore, the telescopic rod is a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

[0016] The beneficial effects of this utility model are:

[0017] 1. When the drive component extends the scissor lift assembly, the folding baffle on the scissor lift assembly also unfolds. The unfolded folding component can separate the fresh air at the fresh air inlet from the indoor air at the exhaust vent, preventing the fresh air at the fresh air inlet from mixing with the indoor air at the exhaust vent, thus achieving the function of preventing air mixing.

[0018] 2. When the indoor air is relatively polluted, the folding component separates the indoor air discharged from the exhaust vent from the fresh air entering through the fresh air inlet. This prevents the fresh air from being polluted by the polluted indoor air, thereby ensuring the quality of the fresh air supply, improving the fresh air exchange effect, and improving the indoor air quality.

[0019] 3. When the folding unit is folded, the entire folding assembly is folded. The folded assembly is compact and can be placed against the outdoor side of the device, making the entire device compact and easy to store and transport.

[0020] 4. The degree of unfolding of the folding component is adjustable. The longer the telescopic rod, the greater the degree of unfolding of the folding component, and the larger the range of separation between the fresh air at the fresh air inlet and the indoor air at the exhaust vent, which can improve the anti-mixing effect and increase the flexibility of use.

[0021] 5. By using hydraulic cylinders, pneumatic cylinders, or electric push rods as telescopic rods, it is convenient to obtain materials, which helps to improve the assembly efficiency of the entire device. Attached Figure Description

[0022] Figure 1 A three-dimensional anti-mixing structure for a fresh air system Figure 1 ;

[0023] Figure 2 A three-dimensional anti-mixing structure for a fresh air system Figure 2 ;

[0024] Figure 3 It is an assembly of brackets, scissor lift assemblies, drive assemblies, and folding baffles in a three-dimensional form. Figure 1 ;

[0025] Figure 4 It is an assembly of brackets, scissor lift assemblies, drive assemblies, and folding baffles in a three-dimensional form. Figure 2 ;

[0026] Figure 5 It is an assembly bottom view of the bracket, scissor lift assembly, drive assembly, and folding baffle;

[0027] Figure 6 It is an assembly top view of the bracket, scissor lift assembly, drive assembly, and folding baffle;

[0028] Figure 7 This is a structural diagram of the background technology.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Built body, 11-Return air vent, 12-Air inlet, 13-Fresh air vent, 14-Exhaust air vent, 15-Screw, 16-Nut

[0031] 21-First support, 22-Second support, 23-Through hole

[0032] 3a - First group of scissor lift units, 3b - Second group of scissor lift units, 3c - Third group of scissor lift units, 3d - Fourth group of scissor lift units, 3e - Fifth group of scissor lift units

[0033] 31-First fork, 32-Second fork, 33-Spindle,

[0034] 4-Telescopic pole,

[0035] 5a - First folding unit, 5b - Second folding unit, 5c - Third folding unit, 5d - Fourth folding unit

[0036] 51-First plate, 52-Second plate. Detailed Implementation

[0037] To better understand this utility model, it will be further described below with reference to the accompanying drawings. It is worth noting that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Example:

[0039] like Figure 1 and Figure 2 As shown, a fresh air ventilator anti-mixed air structure includes a body 1, a bracket, a scissor lift assembly, a drive assembly, and a folding baffle.

[0040] See Figure 1 The unit 1 has a return air inlet 11 and an air inlet 12 on the indoor side, and a fresh air inlet 13 and an exhaust air inlet 14 on the outdoor side.

[0041] See Figure 1 and Figure 2 The fuselage 1 has a support on the outdoor side, which includes a first support 21 and a second support 22. The first support 21 is detachably connected to the upper part of the fuselage 1, and the second support 22 is detachably connected to the lower part of the fuselage 1.

[0042] For details: see Figure 1 and Figure 2 Both the upper and lower parts of the fuselage 1 are fixedly mounted with screws 15 (for example, by welding). See [reference needed]. Figure 3 and Figure 4 Both the first support 21 and the second support 22 are provided with through holes 23.

[0043] After the screw 15 on the upper part of the body 1 passes through the through hole 23 on the first support 21, the nut 16 is screwed onto the screw 15. This clamps the first support 21 between the nut 16 and the upper part of the body 1, thus assembling the first support 21 with the body 1. After unscrewing the nut 16 on the upper part of the body 1, the first support 21 can be removed from the screw 15, thus separating the first support 21 from the body 1.

[0044] After the screw 15 at the lower part of the body 1 passes through the through hole 23 on the second support 22, the nut 16 is screwed onto the screw 15. This clamps the second support 22 between the nut 16 and the lower part of the body 1, thus assembling the second support 22 with the body 1. After unscrewing the nut 16 at the lower part of the body 1, the second support 22 can be removed from the screw 15, thus separating the second support 22 from the body 1.

[0045] As can be seen from the above description, since both the first support 21 and the second support 22 are detachably connected to the body 1, it is convenient to temporarily install the first support 21 and the second support 22 on the existing body 1, making it easy to use.

[0046] The scissor lift assembly includes several sets of scissor lift units. In this embodiment, there are five sets of scissor lift units, see [link to previous section]. Figure 3 and Figure 5 These five scissor units are denoted as: the first scissor unit 3a, the second scissor unit 3b, the third scissor unit 3c, the fourth scissor unit 3d, and the fifth scissor unit 3e.

[0047] See Figure 1 and Figure 3 The first group of scissor lift units 3a, the second group of scissor lift units 3b, the third group of scissor lift units 3c, the fourth group of scissor lift units 3d, and the fifth group of scissor lift units 3e are arranged sequentially from near to far on the outdoor side of the fuselage 1. The first group of scissor lift units 3a is the closest to the fuselage 1, that is, the first group of scissor lift units 3a is the first one to be close to the fuselage 1, and the second group of scissor lift units 3b is the second one to be close to the fuselage 1.

[0048] Each scissor lift unit includes a first fork 31 and a second fork 32 arranged in a cross configuration. A pivot 33 is provided at the intersection of the first fork 31 and the second fork 32, and both the first fork 31 and the second fork 32 are rotatably engaged with the pivot 33. In two adjacent scissor lift units, the end of the first fork 31 in one scissor lift unit is rotatably connected to the end of the second fork 32 in the other scissor lift unit.

[0049] And see also Figure 3 and Figure 5 The lengths of the first fork 31 and the second fork 32 in the first scissor lift unit 3a and the fifth scissor lift unit 3e are shorter than the lengths of the first fork 31 and the second fork 32 in the second scissor lift unit 3b, the third scissor lift unit 3c, and the fourth scissor lift unit 3d.

[0050] See Figure 3 and Figure 4 In the first scissor lift unit 3a, the upper end of the rotating shaft 33 is fixedly connected to the first support 21, and the lower end of the rotating shaft 33 is fixedly connected to the second support 22. After the first support 21 and the second support 22 are installed on the machine body 1, the rotating shaft 33 is then installed.

[0051] The driver component is used to drive the extension and retraction of the scissor lift assembly. See also Figure 3 The drive assembly includes a telescopic rod 4, which can be a hydraulic cylinder, a pneumatic cylinder, or an electric push rod. The telescopic rod 4 is located below the second support 22. One end of the telescopic rod 4 is fixedly connected to the second support 22, and the other end of the telescopic rod 4 is rotatably connected to the rotating shaft 33 in the second scissor lift unit 3b.

[0052] When the telescopic rod 4 extends, the distance between the pivot 33 in the first scissor lift unit 3a and the pivot 33 in the second scissor lift unit 3b increases. At the same time, the distance between the pivot 33 in each pair of adjacent scissor lift units increases, and the overall length of the scissor lift assembly increases.

[0053] When the telescopic rod 4 is shortened, the distance between the pivot 33 in the first scissor lift unit 3a and the pivot 33 in the second scissor lift unit 3b is reduced. At the same time, the distance between the pivot 33 in each pair of adjacent scissor lift units is reduced, and the overall length of the scissor lift assembly is reduced.

[0054] As described above, the telescopic rod 4 extends and retracts, enabling the entire scissor lift assembly to extend and retract. When the telescopic rod 4 extends, the entire scissor lift assembly extends; when the telescopic rod 4 retracts, the entire scissor lift assembly retracts.

[0055] By using hydraulic cylinders, pneumatic cylinders, or electric push rods as telescopic rods 4, it is convenient to obtain materials, which helps to improve the assembly efficiency of the entire device.

[0056] See Figure 1 and Figure 2 The folding baffle is located above the scissor lift assembly and between the fresh air inlet 13 and the exhaust outlet 14. The folding baffle includes several folding units, with one folding unit located between two adjacent rotating shafts 33.

[0057] See Figure 3 and Figure 4 In this embodiment, a total of five scissor lift assemblies are provided, and each scissor lift assembly has a pivot 33, so there are a total of five pivots 33, and thus four sets of folding units are provided. These four sets of folding units are respectively denoted as: first folding unit 5a, second folding unit 5b, third folding unit 5c, and fourth folding unit 5d.

[0058] See Figure 4 and Figure 6 Each folding unit includes a first plate 51 and a second plate 52 that are rotatably connected. The first plate 51 is rotatably connected to one of the two adjacent rotating shafts 33 at the end away from the second plate 52, and the second plate 52 is rotatably connected to the other of the two adjacent rotating shafts 33 at the end away from the first plate 51.

[0059] When the telescopic rod 4 extends, the distance between the pivots 33 in each pair of adjacent scissor units increases, which increases the angle between the first plate 51 and the second plate 52 in each folding unit, thus allowing each folding unit to gradually unfold.

[0060] When the telescopic rod 4 is extended to its longest length, the distance between the pivots 33 in each pair of adjacent scissor units is at its maximum, allowing the first plate 51 and the second plate 52 in each folding unit to be fully unfolded.

[0061] When the telescopic rod 4 is shortened, the distance between the pivots 33 in each pair of adjacent scissor units is reduced, which reduces the angle between the first plate 51 and the second plate 52 in each folding unit, that is, allows each folding unit to be folded gradually.

[0062] When the telescopic rod 4 is retracted to its shortest length, the distance between the pivots 33 in each pair of adjacent scissor units is at its minimum, allowing the first plate 51 and the second plate 52 in each folding unit to be completely folded.

[0063] When the folding unit is unfolded, the folding assembly is in the unfolded state. The unfolded folding assembly can separate the fresh air at the fresh air inlet 13 from the indoor air at the exhaust vent 14, which can prevent the fresh air at the fresh air inlet 13 from mixing with the indoor air at the exhaust vent 14, thus achieving the function of preventing air mixing.

[0064] When the indoor air is relatively polluted, the folding component separates the indoor air discharged from the exhaust vent 14 from the fresh air entering from the fresh air inlet 13, which can prevent the fresh air from being polluted by the polluted indoor air, thereby ensuring the quality of the fresh air supply, improving the fresh air exchange effect, and improving the indoor air quality.

[0065] When the folding unit is folded, the entire folding assembly is folded. The folded assembly is compact and can be placed against the outdoor side of the main body 1, making the entire device compact and easy to store and transport.

[0066] In addition, the degree of unfolding of the folding component is adjustable. The longer the telescopic rod 4 is, the greater the degree of unfolding of the folding component, and the larger the range of separating the fresh air at the fresh air inlet 13 and the indoor air at the exhaust air outlet 14, which can improve the anti-mixing effect and improve the flexibility of use.

[0067] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A new air machine anti-mixing wind structure, comprising a machine body, the machine body is provided with a return air inlet and an air inlet on the indoor side, the machine body is provided with a new air inlet and an exhaust air outlet on the outdoor side, characterized in that, The machine body is provided with a support on the outdoor side, the support is provided with a scissor assembly and a driving assembly for driving the scissor assembly to stretch and retract, the scissor assembly is provided with a folding baffle, and the folding baffle is arranged between the fresh air outlet and the exhaust air outlet.

2. The anti-mixing wind structure of a fresh air machine according to claim 1, characterized in that, The scissor assembly comprises a plurality of groups of scissor units, all the scissor units are arranged in sequence from near to far on the outdoor side of the machine body, the scissor unit comprises a first fork rod and a second fork rod arranged in cross, the first fork rod and the second fork rod are rotationally connected at the cross, and in the two adjacent groups of scissor units, the end of the first fork rod in one group of scissor units is rotationally connected with the end of the second fork rod in the other group of scissor units.

3. The anti-mixing wind structure of a fresh air machine according to claim 2, characterized in that, The folding baffle comprises a plurality of groups of folding units, one folding unit is arranged between the two adjacent rotation shafts, the folding unit comprises a first plate body and a second plate body rotationally connected, the first plate body is rotationally connected with one of the two adjacent rotation shafts at the end away from the second plate body, and the second plate body is rotationally connected with the other of the two adjacent rotation shafts at the end away from the first plate body.

4. The anti-mixing wind structure of a fresh air machine according to claim 2, characterized in that, The support comprises a first support and a second support, the first support and the second support are connected with the machine body, in the scissor unit closest to the machine body, the upper end of the rotation shaft is connected with the first support, and the lower end of the rotation shaft is connected with the second support.

5. The anti-mixing wind structure of a fresh air machine according to claim 4, characterized in that, The first support and the second support are detachably connected with the machine body.

6. The anti-mixing wind structure of a fresh air machine according to claim 4, characterized in that, The driving assembly comprises a telescopic rod, the telescopic rod is arranged below the second support, one end of the telescopic rod is connected with the second support, and the other end of the telescopic rod is connected with the rotation shaft in the scissor unit closest to the machine body.

7. The anti-mixing wind structure of a fresh air machine according to claim 6, characterized in that, The telescopic rod adopts an oil cylinder or an air cylinder or an electric push rod.

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