A J-shaped exhaust duct system for a residential kitchen and bathroom

Abstract

The application provides an exhaust cap and a residential kitchen and bathroom J-shaped exhaust duct system. The exhaust cap is arranged at the outlet of the top of a residential shared exhaust duct and comprises a base with an air inlet, a through-air arc-shaped pipe body connected to the base, an arc-shaped upward section and an arc-shaped downward section, and an air outlet plane of the arc-shaped downward section of the through-air arc-shaped pipe body and a vertical plane form an angle a of 30°-160°. The exhaust cap has simple structure, low cost, convenient transportation and installation, is suitable for various installation environments, has advantages in wall installation, and has arc design, so that the airflow is discharged along the streamline and the resistance is small.

Description

Technical Field

[0001] This application belongs to the field of residential building technology, and more specifically, relates to a J-type exhaust duct system for residential kitchens and bathrooms. Background Technology

[0002] Currently, all residential exhaust duct systems are equipped with wind caps at the outlet to prevent wind and snow from flowing back into the exhaust duct. Existing wind cap structures vary widely, are complex, and have high resistance at the outlet bottleneck.

[0003] like Figure 1 , Figure 2 As shown, this is a common existing wind cap structure, which includes a support member 1' standing outside the exhaust duct 3', a cover plate 2' on top of the support member 1', and an air outlet between the support members 1' for exhaust. The cover plate 2' blocks the outlet of the exhaust duct 3' to prevent rain and snow from entering. The existing wind cap structure is complex and costly. The biggest problem is that due to the presence of the cover plate 2', which is directly opposite the air outlet of the exhaust duct 3', the cover plate 2' has a backflow resistance effect on the exhaust gas, resulting in a high drag coefficient and unsatisfactory exhaust performance. Summary of the Invention

[0004] The purpose of this application is to provide an exhaust cap that solves the problems of complex structure, high cost, large exhaust resistance, and unsatisfactory exhaust effect of the exhaust cap in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application embodiment is as follows: a vent cap is provided for installation at the outlet of the top of a residential common exhaust duct, including a base with an air inlet, the base being connected to a hollow arc-shaped pipe, the hollow arc-shaped pipe including an arc-shaped rising section and an arc-shaped falling section, the angle α between the air outlet plane of the arc-shaped falling section and the vertical plane satisfies: 30°≤a≤160°.

[0006] Furthermore, the air inlet cross-section of the base is rectangular or circular.

[0007] Furthermore, the base is provided with connection holes for connecting to external support components.

[0008] Furthermore, the cross-section of the open arc-shaped tube is rectangular or circular.

[0009] Furthermore, the open arc-shaped tube is a variable diameter tube.

[0010] Furthermore, the open arc-shaped tube body also includes a vertically rising section connected to the arc-shaped rising section; and / or, it also includes a horizontal section connected between the arc-shaped rising section and the arc-shaped falling section.

[0011] Further, the at least two communicating air-arc-shaped pipe bodies are further included.

[0012] The application also provides a J-shaped exhaust duct system for residential kitchens and bathrooms, which is arranged in a residential building and comprises a shared exhaust duct, floor air inlets arranged on the shared exhaust duct and corresponding to each floor, and an exhaust cap arranged at the top of the shared exhaust duct, wherein the exhaust cap is the above-mentioned exhaust cap.

[0013] Further, a check valve is arranged on the shared exhaust duct and corresponding to each floor air inlet, wherein the check valve is a fireproof check valve, or a fireproof check and flow guide valve, or a valve assembled by a fireproof component, a check component, a flow guide component, a pressure changing component and a flow stabilizer component, or an electric check valve, and the check valve is connected to an extractor hood or an exhaust fan through a branch pipe, and the exhaust gas from the residential kitchens and bathrooms is discharged by the J-shaped exhaust duct system through the extractor hood or the exhaust fan.

[0014] Further, the top of the shared exhaust duct has a base formed by concrete pouring, and the base of the exhaust cap is fixed on the base.

[0015] In the application, the exhaust cap is designed as a bent arc-shaped pipe structure, which has at least the following beneficial effects:

[0016] 1. The exhaust cap has a simple structure and omits cover plates and support components, thereby greatly reducing the cost and bringing convenience to transportation and installation.

[0017] 2. The arc-shaped pipe body is first raised and then falls and bends, and this structure is suitable for various installation environments, especially for the installation at a reentrant corner wall, while the top of the exhaust cap in the prior art is complex and extends to the four directions, which is not suitable for installation at a reentrant corner wall, and the pipe structure in the application solves this problem.

[0018] 3. The raised section and the falling section of the pipe structure are designed as an arc line, and this arc line design makes the airflow flow out in a streamline, has small resistance and has a better exhaust effect.

[0019] 4. The gas outlet is arranged on the falling section of the pipe structure, and the plane of the gas outlet and the vertical plane satisfy the above-mentioned angle design, which avoids the entry of rain and snow and does not affect the discharge of gas, and the angle range also provides selection space and flexibility for design and construction. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a schematic view of a prior art exhaust cap structure;

[0022] Figure 2 is a schematic view of another prior art exhaust cap structure;

[0023] Figure 3 is a longitudinal sectional view of a kitchen and bathroom J-shaped exhaust duct system according to an embodiment of the present application;

[0024] Figure 4 is a top view of Figure 3 ;

[0025] Figure 5 is a longitudinal sectional view of an exhaust cap according to an embodiment of the present application;

[0026] Figure 6 is a longitudinal sectional view of an exhaust cap according to an embodiment of the present application;

[0027] Figure 7 is a longitudinal sectional view of an exhaust cap according to an embodiment of the present application;

[0028] Figure 8 is a longitudinal sectional view of an exhaust cap according to an embodiment of the present application;

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1'-support, 2'-cover plate, 3'-exhaust duct,

[0031] 10-exhaust cap, 20-common exhaust duct, 21-exhaust duct air inlet, 11-base, 111-air inlet, 12-arc-shaped air passage pipe body, 121-arc-shaped upward section, 122-arc-shaped downward section, 123-air outlet, 124-vertical upward section, 125-horizontal section, 40-expansion screw, 50-check valve, 60-branch pipe, 70-exhaust hood or exhaust fan, 80-base. DETAILED DESCRIPTION

[0032] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second", "third", "fourth", "fifth" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0036] The first aspect of the embodiments of the present application provides an exhaust cap for being arranged at the outlet of the top of the residential common exhaust duct, comprising a base with an air inlet, the base is connected to an air-through arc-shaped pipe body, the air-through arc-shaped pipe body comprises an arc-shaped rising section and an arc-shaped falling section, and the included angle a between the air outlet plane of the arc-shaped falling section and the vertical plane satisfies: 30°≤a≤160°.

[0037] In the present application, an air-through arc-shaped pipe body structure is additionally arranged on the exhaust cap, which at least has the following beneficial effects:

[0038] I. The exhaust cap structure is simple, and the cover plate, support and other structures are omitted, greatly reducing the cost, and also bringing convenience to transportation and installation;

[0039] II. The arc-shaped pipe body is first raised and then bent downward, and this structure is suitable for various installation environments, especially for installation at the inside corner wall, while the top of the exhaust cap in the prior art is complex and extends to the four directions, which is not suitable for installation at the inside corner wall. The pipe structure in the present application solves this problem;

[0040] III. The rising section and the falling section of the pipe structure are designed in an arc shape, and this arc shape design makes the airflow flow out in a streamline, with small resistance and better exhaust effect;

[0041] IV. The air outlet is arranged on the falling section of the pipe structure, and the plane of the air outlet and the vertical plane satisfy the above angle design, which avoids the entry of rain and snow and does not affect the exhaust of gas, and the angle range also provides selection space and flexibility for design and construction.

[0042] The exhaust member and the J-shaped exhaust duct system formed by the exhaust member in application examples will be described below with reference to the accompanying drawings.

[0043] Example 1

[0044] Referring to Figure 3 , the exhaust cap 10 provided in the example 1 is arranged at the outlet of the top of the common exhaust duct 20 of a residence, which comprises a base 11 with an air inlet 111, and the base 11 is connected with a hollow arc-shaped pipe body 12 at the air inlet 111. The hollow arc-shaped pipe body 12 comprises an arc-shaped upward segment 121 and an arc-shaped downward segment 122, and the included angle a between the plane of the air outlet 123 of the arc-shaped downward segment 122 of the hollow arc-shaped pipe body 12 and the vertical plane satisfies: 30°≤a≤160°.

[0045] As shown in Figure 3 , in the example, the opening direction of the air outlet 123 is downward, and the plane thereof is horizontal, and the included angle a between the plane and the vertical plane is 90°.

[0046] Alternatively, the orientation of the air outlet 123 can be adjusted under the premise of achieving exhaust while avoiding rain and snow from entering, such as being inclined upward, so that the included angle a between the plane of the air outlet and the vertical plane satisfies: 90°<a≤160°. Similarly, the opening direction of the air outlet 123 can also be adjusted to be inclined downward, so that the included angle a between the plane of the air outlet and the vertical plane satisfies: 30°≤a<90°. That is, a is within the range of 30°≤a≤160°, so that the air outlet 123 simultaneously has good exhaust effect and rain and snow blocking effect.

[0047] Referring to Figure 4 , in the example, the cross section of the base 11 is rectangular, and correspondingly, the cross section of the air inlet 111 thereon is also rectangular. Alternatively, the cross sections of the base 11 and the air inlet 111 thereof can also be circular. The cross section of the base 11 and the cross section of the air inlet 111 can also be different, such as the cross section of the base is rectangular, and the cross section of the air inlet 111 is designed to be circular.

[0048] Similarly, as shown in Figure 4 , the cross section of the hollow arc-shaped pipe body 12 is also rectangular. Alternatively, the cross section of the hollow arc-shaped pipe body 12 can also be circular. Of course, the cross section shape of the hollow arc-shaped pipe body can also be designed to be rectangular or other regular shapes or special shapes according to actual needs.

[0049] In this embodiment, the base 11 of the exhaust cap 10 is provided with a connecting hole 111, which is connected with an external support. Specifically, the external support refers to the base 80 at the top of the exhaust duct 20. The expansion screw 40 is installed in the connecting hole 111 to connect and fix the base 80 at the top of the exhaust duct, so that the exhaust cap 10 can be conveniently and quickly fixed at the top of the exhaust duct.

[0050] In this embodiment, the through-hole arc-shaped pipe body 12 is a constant cross-section pipe body. Of course, the through-hole arc-shaped pipe body 12 can also be a variable-diameter pipe body.

[0051] Embodiment Two

[0052] With reference to Figure 5 In this embodiment, the structure of the exhaust cap 10 is improved on the basis of Embodiment One. Specifically, the shape of the through-hole arc-shaped pipe body 12 is improved.

[0053] In this embodiment, the through-hole arc-shaped pipe body 12 further includes a vertical rising section 124 in communication with the arc-shaped rising section 121. The vertical rising section 124 is provided to increase the overall height of the through-hole arc-shaped pipe body 12, which is generally designed according to the height of the exhaust cap 10 of the building structure. In this embodiment, the other structures of the exhaust cap 10 are the same as in the embodiment, and will not be described here.

[0054] Embodiment Three

[0055] With reference to Figure 6 In this embodiment, the exhaust cap 10 differs from Embodiment Two in that the shape of the through-hole arc-shaped pipe body 12 is different.

[0056] In this embodiment, the top between the arc-shaped rising section 121 and the arc-shaped falling section 122 of the through-hole arc-shaped pipe body 12 of the exhaust cap 10 is a horizontal section 125. The horizontal section 125 is designed to extend the through-hole arc-shaped pipe body 12 to a certain extent, and the plane of the air inlet of the through-hole arc-shaped pipe body 12 and the plane of the air outlet 123 are on the same horizontal plane, so that the height of the exhaust cap 10 is relatively low, which is generally designed to adapt to the building structure. In this embodiment, the other structures of the exhaust cap 10 are the same as in the embodiment, and will not be described here.

[0057] Embodiment Four

[0058] With reference to Figure 7 In this embodiment, the shape of the through-hole arc-shaped pipe body 12 is different from that of Embodiments One, Two and Three.

[0059] In this embodiment, the through-air arc-shaped pipe body 12 of the exhaust cap 10 comprises a vertical upward segment 124, an arc-shaped upward segment 121, a horizontal segment 125, and an arc-shaped downward segment 122 which are sequentially communicated. In this way, the vertical upward segment 124 is designed to increase the height of the exhaust cap, and the horizontal segment 125 is designed to extend the horizontal length, so that the exhaust cap is suitable for installation in different building scenes. The other structures of the exhaust cap 10 are the same as those of the first embodiment, and will not be described herein.

[0060] Embodiment Five

[0061] With reference to Figure 8 In this embodiment, the exhaust cap 10 comprises two through-air arc-shaped pipe bodies 12 which are communicated. The structures of the through-air arc-shaped pipe bodies 12 are the same as those of the second embodiment, and will not be described herein. The structure of the multiple through-air arc-shaped pipe bodies 12 can be designed according to the ventilation requirement of the J-shaped exhaust duct system, and the exhaust cap 10 has more through-air arc-shaped pipe bodies 12, so that the system exhaust is more utilized.

[0062] Embodiment Six

[0063] With reference to Figure 1 The present application also provides a J-shaped exhaust duct system for kitchens and bathrooms of a residence, which is arranged in a residential building and comprises a shared exhaust duct, floor air inlets arranged on the shared exhaust duct and corresponding to each floor, and an exhaust cap arranged at the top of the shared exhaust duct. The exhaust cap is the exhaust cap in the first embodiment.

[0064] In this embodiment, a check valve 50 is arranged at each floor air inlet 21 of the shared exhaust duct 20. The check valve 50 is connected to an extractor hood or an exhaust fan 70 through a branch pipe 60. During the morning, noon, and evening cooking peak periods, the exhaust gas discharged from each floor kitchen is sucked into the shared exhaust duct 20 through the extractor hood or the exhaust fan 70, the branch pipe 60, and the air inlet, and is finally discharged into the external air through the exhaust cap at the top.

[0065] The check valve 50 has a fireproof check valve function, which prevents the exhaust gas in the shared exhaust duct 20 from flowing back into each floor through each floor air inlet 21. The check valve 50 can have various forms, and different check valves can be selected according to actual needs. For example, the check valve 50 can be a fireproof check valve, or a fireproof check valve and flow guide, or a valve assembled by a fireproof component, a check component, a flow guide component, a pressure changing component, and a flow stabilizer component, or an electric check valve.

[0066] In this embodiment, the shared exhaust duct 20 passes through the reserved holes of the floor slab and the top slab and is arranged on the bottom slab. The shared exhaust duct 20 can be assembled by stacking square or outer square and inner circular prefabricated components, or by stacking square metal components, or by surrounding and assembling L-shaped prefabricated components, L-shaped metal components, and U-shaped metal components with the building outer wall.

[0067] The top of the common exhaust duct 20 is extended by the floor top plate, and the top thereof is integrally formed with a base 80 by concrete pouring or / and masonry, and the exhaust cap 10 is fixed on the base 80. Specifically, the base 11 of the exhaust cap 10 is placed on the base 80, and the base 11 is fixedly connected with the base 80 by means of expansion screws 40 passing through connecting holes 111 on the base 11, so as to realize quick installation and fixation of the exhaust cap 10.

[0068] In other embodiments, the exhaust cap 10 in embodiments two to five can be installed in the J-shaped exhaust duct system of the residential kitchen and bathroom, and the structure of the common exhaust duct 20 is the same as that of the present embodiment, which will not be described here.

[0069] The J-shaped exhaust duct system with the above-mentioned structure of the exhaust cap 10 can make the gas discharged from the vertical common exhaust duct 20 flow better along the arc-shaped pipeline of the exhaust cap 10, has small resistance, and is finally smoothly discharged from the gas outlet 123. Such an exhaust cap 10 is bent to one side, is suitable for various installation environments, and has advantages in installation at the inside corner wall. Moreover, such an exhaust cap 10 has simple structure, low cost, and is convenient for transportation and installation.

[0070] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A residential kitchen and bathroom J-type exhaust duct system arranged in a residential building, comprising a common exhaust duct, a floor air inlet arranged on the common exhaust duct corresponding to each floor, and an exhaust cap arranged at the top of the common exhaust duct, characterized in that: The exhaust cap is arranged at the outlet of the top of the residential common exhaust passage, comprising a base with an air inlet, the base is connected with an air-through arc-shaped pipe body, the air-through arc-shaped pipe body comprises an arc-shaped rising section, an arc-shaped falling section and a vertical rising section communicated with the arc-shaped rising section, the air-through arc-shaped pipe body is a variable diameter pipe, the base is provided with a connecting hole for connecting with an external support, the included angle a between the air outlet plane of the arc-shaped falling section and the vertical plane satisfies 30°≤a≤160°.

2. The residential kitchen and bath J vent system of claim 1, wherein: The air inlet of the base is in rectangular or circular cross section.

3. The residential kitchen and bath J vent system of claim 1, wherein: The air-through arc-shaped pipe body is in rectangular or circular cross section.

4. The residential kitchen and bath J vent system of claim 1, wherein: The air-through arc-shaped pipe body further comprises a horizontal section communicated between the arc-shaped rising section and the arc-shaped falling section.

5. The residential kitchen and bath J vent system of any one of claims 1 to 4, wherein: At least two air-through arc-shaped pipe bodies are further included.

6. The residential kitchen and bath J vent system of claim 1, wherein: Corresponding check valves are arranged at the air inlets of each floor of the common exhaust passage, the check valve is a fireproof check valve, or a fireproof check flow guiding valve, or a valve assembled and combined by a fireproof part, a check part, a flow guiding part, a pressure changing part and a flow stabilizer part, or an electric check valve, the check valve is connected with an oil smoke extractor or an exhaust fan through a branch pipe, the residential kitchen and bathroom exhaust gas is discharged by the J-shaped exhaust passage system through the oil smoke extractor or the exhaust fan.

7. The residential kitchen and bath J vent system of claim 1, wherein: The top of the common exhaust passage is provided with a base made by concrete pouring, and the base of the exhaust cap is fixed on the base.

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