Air filter screen mounting structure for smoke-pipe-free range hood

Abstract

The utility model discloses an air strainer mounting structure for a smokeless tube range hood, which comprises a fixed frame and a movable frame, the fixed frame is fixed in a range hood shell, the edge of the fixed frame is fitted with the inner wall of the range hood shell, the rear end of the movable frame is hinged with the rear end of the fixed frame, and the movable frame is hinged with the rear end of the fixed frame. The filter screen is clamped between the fixed frame and the movable frame in a matched mode, sealing strips attached to a frame body of the filter screen are arranged on the inner side face of the fixed frame and the inner side face of the movable frame, and fixing mechanisms connected in a matched mode are arranged on the front side face of the fixed frame and the front side face of the movable frame. According to the utility model, the filter screen is clamped and fixed between the fixed frame and the movable frame which are hinged with each other, and is sealed by the sealing strip, so that the probability that smoke leaks from the edge of the filter screen is reduced.

Description

Technical Field

[0001] The utility model relates to the field of range hoods, in particular to an air filter installation structure for a smokeless range hood. Background Art

[0002] A smokeless range hood is a type of equipment that inhales oil fumes, filters and purifies them inside the range hood, and then discharges clean air back into the city. Since this type of range hood does not require the installation of an exhaust pipe and does not discharge oil fumes to the outdoors, it is widely used in the catering industry.

[0003] A filter is usually installed in the range hood housing of the above-mentioned smokeless range hood to assist the filtering device in improving the purification effect. A bracket is provided in the range hood housing, and the filter is installed by sliding it into the bracket. However, in order to facilitate the installation and removal of the filter, the size of the bracket will leave a margin relative to the filter. Therefore, there will be an obvious gap between the edge of the filter and the bracket, especially between the upper side of the filter and the bracket. When the smoke passes through the filter, part of the smoke will leak out from the gap, resulting in a reduction in the filtering effect of the filter on the smoke. Utility Model Content

[0004] The utility model aims to provide an air filter installation structure for a smokeless range hood, which reduces the probability of smoke leaking from the edge of the filter by clamping and fixing the filter between a fixed frame and a movable frame hinged to each other and sealing it with a sealing strip.

[0005] The technical solution adopted by the utility model to solve the above problems is:

[0006] The air filter installation structure for a smokeless range hood comprises a fixed frame and a movable frame, wherein the fixed frame is fixed in the range hood housing and the edge of the fixed frame is fitted with the inner wall of the range hood housing, the rear end of the movable frame is hingedly connected to the rear end of the fixed frame, the filter is fitted and clamped between the fixed frame and the movable frame, the inner side surfaces of the fixed frame and the movable frame are provided with sealing strips that fit with the frame of the filter, and the front side surfaces of the fixed frame and the movable frame are provided with a fixing mechanism that is matched and connected.

[0007] In the above technical solution, preferably, the fixing mechanism includes a handle, a hanging ring and a front hook, the handle is rotatably arranged on the movable frame, the hanging ring is inserted into the handle through a threaded structure, the front hook is fixed on the fixing frame and the hanging ring is arranged in the front hook.

[0008] In the above technical solution, preferably, the front sides of the fixed frame and the movable frame are both provided with mounting grooves, and the fixing mechanism is adapted to be fixed in the mounting grooves.

[0009] In the above technical solution, preferably, the front-to-back width of the rear side of the fixed frame is greater than the front-to-back width of the rear side of the movable frame, and the hinge between the movable frame and the fixed frame is located in the middle of the rear part of the fixed frame.

[0010] In the above technical solution, preferably, a U-shaped groove body which is adapted to be combined is provided on the inner side of the fixed frame and the movable frame, and the groove body is adapted to the shape of the frame of the filter.

[0011] In the above technical solution, preferably, the fixed frame and the movable frame are connected via a hinge, and a tension spring is provided between the hinge and the fixed frame.

[0012] Compared with the prior art, the utility model has the following advantages and effects:

[0013] In the utility model, the edge of the fixed frame is fitted and fixed to the inner wall of the range hood, and the filter screen is clamped and fixed between the fixed frame and the movable frame. The edge of the filter screen is sealed by the sealing strips between the fixed frame and the filter screen and between the movable frame and the filter screen, thereby reducing the probability of smoke leaking from the gap between the edge of the filter screen and the fixed frame and the gap between the movable frame, thereby ensuring that most of the smoke can be filtered through the filter screen, thereby improving the filtering effect of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an air filter installation structure for a smokeless duct range hood according to an embodiment of the utility model.

[0015] Figure 2 yes Figure 1 Schematic diagram of the unfolded state of the fixed frame and the movable frame.

[0016] Figure 3 yes Figure 1 Schematic diagram of the structure of the fixing mechanism.

[0017] Figure 4 yes Figure 1 Top view of the center hinge.

[0018] Among them, there are a fixing frame 1, a mounting groove 11, a groove body 12, a movable frame 2, a filter screen 3, a sealing strip 4, a fixing mechanism 5, a handle 51, a hanging ring 52, a front hook 53, a hinge 6, and a tension spring 61. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0020] See also Figure 1-Figure 4The present embodiment is an air filter installation structure for a smokeless range hood, comprising a fixed frame 1 and a movable frame 2, wherein the fixed frame 1 is fixed in the range hood housing and the edge of the fixed frame 1 is fitted with the inner wall of the range hood housing, the rear end of the movable frame 2 is hingedly connected to the rear end of the fixed frame 1, the filter 3 is fitted and clamped between the fixed frame 1 and the movable frame 2, the inner side surfaces of the fixed frame 1 and the movable frame 2 are both provided with sealing strips 4 fitted with the frame of the filter 3, and the front side surfaces of the fixed frame 1 and the movable frame 2 are provided with a fixing mechanism 5 that is matched and connected.

[0021] In the present embodiment, the filter 3 is installed by inserting it into the range hood housing from the front opening of the range hood housing, so the opening and closing ends of the fixed frame 1 and the movable frame 2 are located at the front side and are adapted to the internal shape of the range hood housing, so that after the front opening of the range hood housing is covered with a cover plate, the front, rear, upper and lower four side surfaces of the fixing part are respectively fitted with the front, rear, upper and lower four inner walls of the range hood housing.

[0022] In the utility model, the edge of the fixing frame 1 is fitted and fixed to the inner wall of the range hood, and then the filter screen 3 is clamped and fixed between the fixing frame 1 and the movable frame 2. The edge of the filter screen 3 is sealed by the sealing strip 4 between the fixing frame 1 and the filter screen 3 and the sealing strip 4 between the movable frame 2 and the filter screen 3, thereby reducing the probability of smoke leaking from the gap between the edge of the filter screen 3 and the fixing frame 1 and the gap between the movable frame 2, thereby ensuring that most of the smoke can be filtered through the filter screen 3, and improving the filtering effect of the filter screen 3.

[0023] See also Figure 1 , Figure 2 The front sides of the fixed frame 1 and the movable frame 2 are both provided with mounting grooves 11 , and the fixing mechanism 5 is adapted to be fixed in the mounting grooves 11 .

[0024] By embedding and fixing the fixing mechanism 5 in the mounting groove 11, it is avoided that the fixing mechanism 5 protrudes from the front side of the fixing frame 1 and / or the movable frame 2 so that the fixing frame 1 and the movable frame 2 cannot fit with the front inner wall of the range hood housing, thereby reducing the probability of smoke leaking from the front edge of the fixing frame 1 and the movable frame 2.

[0025] See also Figure 1 , Figure 2 The front-to-back width of the rear side of the fixed frame 1 is greater than the front-to-back width of the rear side of the movable frame 2 , and the hinge between the movable frame 2 and the fixed frame 1 is located in the middle position of the rear part of the fixed frame 1 .

[0026] When the movable frame 2 is rotated and unfolded with the fixed frame 1, since the movable frame 2 has a certain thickness and the rear side surface of the fixed frame 1 is in contact with the inner wall of the range hood housing, there is a situation where the range hood housing hinders the rotation of the movable frame 2. Therefore, in the utility model, the movable frame 2 is hinged to the middle position of the rear part of the fixed frame 1 to ensure that the movable frame 2 can be rotated and unfolded, thereby facilitating the installation of the filter 3.

[0027] See also Figure 2 The inner sides of the fixed frame 1 and the movable frame 2 are provided with a U-shaped groove 12 which is adapted to be combined, and the groove 12 is adapted to the shape of the frame of the filter screen 3.

[0028] The opening of the groove body 12 is located on the front side. When the filter 3 is placed between the fixed frame 1 and the movable frame 2, the filter 3 can be supported and positioned by the lower part of the groove body 12, thereby improving the convenience of installing the filter 3. At the same time, the upper and lower sides and the rear inner wall of the groove body 12 can fit with the corresponding side surfaces of the filter 3, thereby improving the fixing effect of the filter 3 and ensuring the tight fit between the sealing strip 4 and the filter 3.

[0029] See also Figure 3 The fixing mechanism 5 includes a handle 51, a hanging ring 52 and a front hook 53. The handle 51 is rotatably set on the movable frame 2, the hanging ring 52 is inserted on the handle 51 through a threaded structure, and the front hook 53 is fixed on the fixing frame 1 and the hanging ring 52 is arranged in the front hook 53.

[0030] The fixing mechanism 5 in the utility model adopts a conventional lever-type buckle structure, which has the advantage of being easy to lock and unlock, so that the filter 3 can be installed between the fixed frame 1 and the movable frame 2 for fixing and the filter 3 can be removed for cleaning. At the same time, the hanging ring 52 and the handle 51 are connected by a threaded structure so that the extension length of the hanging ring 52 relative to the handle 51 can be adjusted. At the same time, since the sealing strip 4 is usually made of elastic rubber material, the elasticity of the sealing strip 4 and the adjustability of the extension position of the hanging ring 52 can be used to adapt to the installation of filters 3 of different thicknesses within a certain range, ensuring that when there are differences in the thickness of the filter 3, the sealing strip 4 can fit the frame of the filter 3 to achieve sealing.

[0031] See also Figure 1 , Figure 4 The fixed frame 1 and the movable frame 2 are connected via a hinge 6 , and a tension spring 61 is provided between the hinge 6 and the fixed frame 1 .

[0032] When the thickness of the frame of the filter 3 is greater than the left and right width of the groove 12 formed between the fixed frame 1 and the movable frame 2, there is a situation where the fixed frame 1 and the movable frame 2 cannot be completely closed. Therefore, in the utility model, a tension spring 61 is arranged at the position of the hinge 6. When the movable frame 2 and the fixed frame 1 are pushed to close, the tension spring 61 is stretched, and the rear sides of the fixed frame 1 and the movable frame 2 are separated, so that it can be adapted to the installation of the filter 3 with a larger thickness, thereby improving the scope of application of the utility model.

[0033] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. An air filter installation structure for a smokeless range hood, characterized in that: It includes a fixed frame and a movable frame, the fixed frame is fixed in the range hood housing and the edge of the fixed frame is fitted with the inner wall of the range hood housing, the rear end of the movable frame is hingedly connected to the rear end of the fixed frame, the filter is fitted and clamped between the fixed frame and the movable frame, the inner sides of the fixed frame and the movable frame are provided with sealing strips that fit with the frame of the filter, and the front sides of the fixed frame and the movable frame are provided with a matching fixing mechanism.

2. The air filter installation structure for a smokeless range hood according to claim 1, characterized in that: The fixing mechanism comprises a handle, a hanging ring and a front hook. The handle is rotatably arranged on a movable frame, the hanging ring is inserted on the handle through a threaded structure, the front hook is fixed on the fixing frame and the hanging ring is arranged inside the front hook.

3. The air filter installation structure for a smokeless range hood according to claim 1, characterized in that: The front sides of the fixed frame and the movable frame are both provided with mounting grooves, and the fixing mechanism is adapted to be fixed in the mounting grooves.

4. The air filter installation structure for a smokeless range hood according to claim 1, characterized in that: The front-to-back width of the rear side of the fixed frame is greater than the front-to-back width of the rear side of the movable frame, and the hinge between the movable frame and the fixed frame is located in the middle position of the rear part of the fixed frame.

5. The air filter installation structure for a smokeless range hood according to claim 1, characterized in that: The inner sides of the fixed frame and the movable frame are provided with a U-shaped groove body which is adapted to be combined, and the groove body is adapted to the shape of the frame body of the filter screen.

6. The air filter installation structure for smokeless range hood according to claim 1, characterized in that: The fixed frame and the movable frame are connected via a hinge, and a tension spring is arranged between the hinge and the fixed frame.

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