Smoke exhaust device with backflow air duct structure
By incorporating a smoke extraction chamber, a heat dissipation chamber, and a return flow chamber within the range hood, the problem of heat accumulation in the cabinet is solved, resulting in a reduction in cabinet temperature and an extension of the device's lifespan.
Patent Information
- Application Number
- CN202520053240.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-09
AI Technical Summary
The heat dissipation chamber of existing downdraft range hoods is connected to the outside, causing heat to accumulate inside the cabinet, which raises the cabinet temperature and affects its service life.
The range hood is equipped with a smoke extraction chamber, a heat dissipation chamber, and a return flow chamber. The heat dissipation chamber is connected to the outside but not to the smoke extraction chamber. The return flow chamber is connected to the smoke extraction chamber and is connected to the outside through an outflow hole. When the fan is started, the hot air exhausted from the heat dissipation chamber into the cabinet is drawn into the smoke extraction chamber to prevent the cabinet from heating up.
This effectively prevents the cabinet temperature from rising and extends the service life of the smoke extraction device.
Smart Images
Figure CN223882407U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to range hood technical field especially has the backflow air duct structure's smoke exhaust device. BACKGROUND
[0002] The lower suction type range hood is a device which absorbs and discharges smoke downward to maintain the air clean in the kitchen during cooking. The existing lower suction type range hood comprises a body, a fan and an electromagnetic component, the body has a smoke suction cavity and a heat dissipation cavity, the smoke suction cavity is communicated with the outside and is provided with the fan, the electromagnetic component is arranged on the top of the body and is located above the heat dissipation cavity, the heat dissipation cavity is communicated with the outside for heat dissipation of the electromagnetic component, the lower suction type range hood is embeddedly assembled in the cabinet, and the hot air flowing out of the heat dissipation cavity accumulates in the cabinet, which leads to the temperature rise of the cabinet and reversely affects the service life of the lower suction type range hood. SUMMARY
[0003] The utility model discloses a smoke exhaust device with backflow air duct structure, which solves the problem that the heat dissipation cavity of the existing lower suction type range hood is communicated with the outside, the heat accumulates in the cabinet, the temperature of the cabinet rises, and the service life of the lower suction type range hood is reversely affected.
[0004] The utility model is realized through the following technical schemes:
[0005] The smoke exhaust device with backflow air duct structure comprises a body, a fan and an electromagnetic component, the body has a smoke suction cavity, a heat dissipation cavity and a backflow cavity, the smoke suction cavity is communicated with the outside and is provided with the fan, the backflow cavity is communicated with the smoke suction cavity and is communicated with the outside through an outflow hole, the heat dissipation cavity is communicated with the outside through a heat dissipation hole, the heat dissipation cavity and the smoke suction cavity are not communicated with each other, and the electromagnetic component is arranged above the heat dissipation cavity.
[0006] Further, an electric control board is arranged in the backflow cavity, and the electromagnetic component and the fan are controlled by the electric control board.
[0007] Further, the backflow cavity is communicated with the smoke suction cavity through an inflow hole, and the inflow hole and the outflow hole are opposite to each other in front and back and are staggered to each other in left and right.
[0008] Further, the heat dissipation cavity and the electromagnetic component are a plurality of and one-to-one corresponding, at least one heat dissipation cavity is adjacent to the backflow cavity, and the heat dissipation cavity adjacent to the backflow cavity is communicated with the backflow cavity through an inner through hole.
[0009] Further, the top of the body is provided with a smoke inlet hole communicated with the smoke suction cavity, the electromagnetic component is arranged on one side of the smoke inlet hole, and the heat dissipation hole and the outflow hole are arranged on the side wall of the body.
[0010] Further, the smoke extraction cavity has a smoke suction cavity and a smoke exhaust cavity stacked one above the other, the smoke suction cavity is located at the top, and the smoke exhaust cavity is located at the bottom; the smoke suction cavity is in communication with the smoke exhaust cavity and the outside through a smoke inlet hole; the smoke exhaust cavity is in communication with the outside through a smoke outlet hole; the smoke exhaust cavity is provided with the fan; the smoke inlet hole is arranged on the top of the machine body; and the smoke outlet hole is arranged on the side wall of the machine body.
[0011] Further, the smoke suction cavity is in communication with the smoke exhaust cavity through a communication hole, the communication hole at least partially faces the smoke inlet hole, and the air inlet end of the fan faces the communication hole.
[0012] Further, the machine body has a bottom shell, a middle shell and a panel stacked one above the other from bottom to top; the panel and the middle shell jointly form the smoke suction cavity, the heat dissipation cavity and the backflow cavity; the middle shell and the bottom shell jointly form the smoke exhaust cavity; the panel is provided with the electromagnetic component and the smoke inlet hole; the side wall of the middle shell is provided with the heat dissipation hole and the outflow hole; and the side wall of the bottom shell is provided with the smoke outlet hole.
[0013] Further, the panel and the middle shell are detachably fixedly connected; and / or the middle shell and the bottom shell are detachably fixedly connected.
[0014] The technical scheme has the advantages that by arranging the smoke extraction cavity, the heat dissipation cavity and the backflow cavity in the machine body, the heat dissipation cavity is in communication with the outside and does not communicate with the smoke extraction cavity, and the backflow cavity is in communication with the smoke extraction cavity and the outside through the outflow hole; therefore, when the fan starts to suck and exhaust smoke, the hot air in the heat dissipation cavity exhausted by the fan into the cabinet can be sucked into the smoke extraction cavity through the backflow cavity, so that the temperature rise of the cabinet does not affect the service life of the smoke extraction device. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.
[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced.
[0017] Figure 1 is a perspective view of the smoke extraction device with a backflow air duct structure disclosed in the embodiment;
[0018] Figure 2 is an exploded view of the smoke extraction device with a backflow air duct structure disclosed in the embodiment;
[0019] Figure 3This is a cross-sectional view of the smoke exhaust device with a return air duct structure disclosed in the embodiment;
[0020] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;
[0021] Figure 5 This is a perspective view of the shell in the embodiment. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Example: Figures 1-5 As shown, the smoke exhaust device with a return air duct structure includes a body 1, a fan 2, and an electromagnetic component 3. The body 1 has a smoke extraction chamber 101, a heat dissipation chamber 102, and a return air duct 103. The smoke extraction chamber 101 is connected to the outside and contains the fan 2. The return air duct 103 is connected to the smoke extraction chamber 101 and is also connected to the outside through an outflow hole 105. The heat dissipation chamber 102 is connected to the outside through a heat dissipation hole 106. The heat dissipation chamber 102 and the smoke extraction chamber 101 are not interconnected. The electromagnetic component 3 is located above the heat dissipation chamber 102. The smoke exhaust device with the return air duct structure is embedded in a cabinet. This embodiment provides a smoke exhaust device with a return air duct structure to solve the problem that in existing downdraft range hoods, the heat dissipation chamber is connected to the outside, causing the heat discharged from the heat dissipation chamber to accumulate in the cabinet, resulting in an increase in cabinet temperature and consequently affecting the service life of the downdraft range hood. This is mainly achieved by configuring a smoke extraction chamber 101, a heat dissipation chamber 102, and a return air duct 103 within the body 1. The heat dissipation chamber 102 is connected to the outside but not to the smoke extraction chamber 101. The return air duct 103 is connected to the smoke extraction chamber 101 and is connected to the outside through an outflow hole 105. Because the return air duct 103 is connected to the outside, when the fan 2 starts to extract smoke, the fan 2 can draw the hot air discharged from the heat dissipation chamber 102 into the cabinet through the return air duct 103 into the smoke extraction chamber 101, preventing the cabinet from overheating and affecting the service life of the smoke exhaust device.
[0024] In this embodiment of the invention, an electronic control board 4 is provided inside the reflux cavity 103, and the electromagnetic component 3 and the fan 2 are controlled by the electronic control board 4. This arrangement, by placing the electronic control board 4 inside the reflux cavity 103, provides the electronic control board 4 with good heat dissipation.
[0025] In the embodiment of the utility model, the backflow cavity 103 communicates with the smoke extraction cavity 101 through the inner flow hole 104, and the inner flow hole 104 and the outer flow hole 105 are opposite in front and back and staggered left and right. The above-mentioned setting is that the inner flow hole 104 and the outer flow hole 105 are configured to be opposite in front and back and staggered left and right, the inner flow hole 104 and the outer flow hole 105 are configured on the diagonal positions of the backflow cavity 103, and the electric control board 4 has good heat dissipation effect.
[0026] In the embodiment of the utility model, the heat dissipation cavity 102 and the electromagnetic component 3 are one-to-one correspondence. The above-mentioned setting is that the heat dissipation cavity 102 and the electromagnetic component 3 are configured to be one-to-one correspondence, the smoke exhaust device has multiple cooking positions, and is flexible and variable.
[0027] In the embodiment of the utility model, at least one heat dissipation cavity 102 is adjacent to the backflow cavity 103, and the heat dissipation cavity 102 adjacent to the backflow cavity 103 communicates with the backflow cavity 103 through the inner through hole 107. The above-mentioned setting is that the backflow cavity 103 adjacent to the heat dissipation cavity 102 is configured to communicate with the backflow cavity 103 through the inner through hole 107, and the heat dissipation cavity 102 has good heat dissipation effect.
[0028] In the embodiment of the utility model, the top of the machine body 1 is provided with a smoke inlet hole 108 communicating with the smoke extraction cavity 101, the electromagnetic component 3 is arranged on one side of the smoke inlet hole 108, and the heat dissipation hole 106 and the outer flow hole 105 are arranged on the side wall of the machine body 1. The above-mentioned setting is that the smoke inlet hole 108 is arranged at the top of the machine body 1, and the heat dissipation hole 106 and the outer flow hole 105 are arranged on the side wall of the machine body 1, so that the airflow of the heat dissipation cavity 102 and the smoke extraction cavity 101 is avoided to wind around each other, and the hot air in the cabinet can be conveniently extracted back to the smoke extraction cavity 101.
[0029] In the embodiment of the utility model, the smoke extraction cavity 101 has the smoke suction cavity 109 and the smoke exhaust cavity 110 stacked in up and down, the smoke suction cavity 109 is upper, the smoke exhaust cavity 110 is lower, the smoke suction cavity 109 and the smoke exhaust cavity 110 communicate and communicate with the outside through the smoke inlet hole 108, the smoke exhaust cavity 110 communicates with the outside through the smoke exhaust hole 111, the smoke exhaust cavity 110 is provided with the fan 2, and the smoke exhaust hole 111 is arranged on the side wall of the machine body 1. The above-mentioned setting is that the smoke extraction cavity 101 is configured to have the smoke suction cavity 109 and the smoke exhaust cavity 110 stacked in up and down, the smoke suction cavity 109 communicates with the outside through the smoke inlet hole 108, the smoke exhaust cavity 110 communicates with the outside through the smoke exhaust hole 111, and the smoke extraction cavity 101 is compact and reasonable.
[0030] In the embodiment of the utility model, the smoke suction cavity 109 communicates with the smoke exhaust cavity 110 through the communication hole 112, and the air inlet end of the fan 2 is opposite to the communication hole 112. The above-mentioned setting is that the air inlet end of the fan 2 is configured to be opposite to the communication hole 112, the fan 2 is smooth and fast when starting, the smoke suction and exhaust effect is good, and the smoke exhaust device is small in size.
[0031] In the embodiment of the utility model, the communication hole 112 is at least partially opposite to the smoke inlet hole 108. The above-mentioned arrangement is to configure the communication hole 112 to be at least partially opposite to the smoke inlet hole 108, so that the fan 2 starts smoothly and quickly, the smoke suction and exhaust effect is good, and the miniaturization design of the smoke exhaust device is facilitated.
[0032] In the embodiment of the utility model, the machine body 1 has a bottom shell 113, a middle shell 114 and a panel 115 stacked from bottom to top, the panel 115 and the middle shell 114 form a smoke suction cavity 109, a heat dissipation cavity 102 and a backflow cavity 103, the middle shell 114 and the bottom shell 113 form a smoke exhaust cavity 110, the panel 115 is provided with an electromagnetic element 3 and a smoke inlet hole 108, the side wall of the middle shell 114 is provided with a heat dissipation hole 106 and an outflow hole 105, the side wall of the bottom shell 113 is provided with a smoke exhaust hole 111, and the smoke suction cavity 109 is communicated with the backflow cavity 103 through an inflow hole 104. The above-mentioned arrangement is to configure the machine body 1 to have the bottom shell 113, the middle shell 114 and the panel 115 stacked from bottom to top, the panel 115 and the middle shell 114 form the smoke suction cavity 109, the heat dissipation cavity 102 and the backflow cavity 103, and the middle shell 114 and the bottom shell 113 form the smoke exhaust cavity 110, so that the machine body 1 is compact and reasonable.
[0033] In the embodiment of the utility model, the panel 115 and the middle shell 114 are detachably fixedly connected, and the middle shell 114 and the bottom shell 113 are detachably fixedly connected. Specifically, the panel 115 and the middle shell 114 are connected through bolts, and the middle shell 114 and the bottom shell 113 are connected through bolts. The above-mentioned arrangement is to configure the panel 115 and the middle shell 114 to be detachably fixedly connected, and configure the middle shell 114 and the bottom shell 113 to be detachably fixedly connected, so as to facilitate the disassembly and maintenance of the bottom shell 113, the middle shell 114 and the panel 115.
[0034] In the embodiment of the utility model, the lower side of the middle shell 114 is provided with a positioning groove 116 for inserting the bottom shell 113. The above-mentioned arrangement is to configure the positioning groove 116 for inserting the bottom shell 113 on the lower side of the middle shell 114, so that the middle shell 114 and the bottom shell 113 are stably connected and the noise generated by the operation of the fan 2 is reduced.
[0035] It should be understood that the terms "first", "second" and the like in the present application are used to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the "first" information can also be referred to as "second" information, and similarly, the "second" information can also be referred to as "first" information. In addition, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does 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 a limitation on the present application.
[0036] The above is one or more embodiments provided in combination with specific content, and does not mean that the specific implementation of the present application is limited to these descriptions. Any approximation, similarity or replacement of the method and structure of the present application, or any technical deduction or replacement under the concept of the present application, should be regarded as the protection of the present application.
Claims
1. A smoke exhaust device having a return air duct structure, comprising a body, a fan and an electromagnetic member, characterized in that, The machine body has a smoking cavity, a heat dissipation cavity and a backflow cavity, the smoking cavity is communicated with the outside world and is provided with the fan, the backflow cavity is communicated with the smoking cavity and is communicated with the outside world through an outflow hole, the heat dissipation cavity is communicated with the outside world through a heat dissipation hole, the heat dissipation cavity and the smoking cavity are not communicated with each other, and the electromagnetic element is arranged above the heat dissipation cavity.
2. The smoke discharging apparatus having a backflow air duct structure according to claim 1, wherein An electric control board is arranged in the backflow cavity, and the electromagnetic element and the fan are controlled by the electric control board.
3. The smoke discharging apparatus having a backflow air duct structure according to claim 1, wherein The backflow cavity is communicated with the smoking cavity through an inflow hole, and the inflow hole and the outflow hole are opposite to each other in front and back and staggered to each other in left and right.
4. The smoke discharging apparatus having a backflow air duct structure according to claim 1, wherein The heat dissipation cavity and the electromagnetic element are a plurality of and one-to-one corresponding, at least one heat dissipation cavity is adjacent to the backflow cavity, and the heat dissipation cavity adjacent to the backflow cavity is communicated with the backflow cavity through an inner through hole.
5. The smoke discharging apparatus having a backflow air duct structure according to claim 1, wherein The machine body is provided with a smoke inlet hole communicated with the smoking cavity on the top, the electromagnetic element is arranged on one side of the smoke inlet hole, and the heat dissipation hole and the outflow hole are arranged on the side wall of the machine body.
6. The smoke discharging apparatus having a backflow air duct structure according to claim 1, wherein The smoking cavity has an upper smoking cavity and a lower smoke exhaust cavity stacked in sequence, the upper smoking cavity is arranged on the top, the lower smoke exhaust cavity is arranged on the bottom, the upper smoking cavity and the lower smoke exhaust cavity are communicated with each other and communicated with the outside world through a smoke inlet hole, the lower smoke exhaust cavity is communicated with the outside world through a smoke exhaust hole, the fan is arranged in the lower smoke exhaust cavity, the smoke inlet hole is arranged on the top of the machine body, and the smoke exhaust hole is arranged on the side wall of the machine body.
7. The smoke discharging apparatus having a backflow air duct structure according to claim 6, wherein The upper smoking cavity is communicated with the lower smoke exhaust cavity through a communication hole, the communication hole is at least partially opposite to the smoke inlet hole, and the air inlet end of the fan is opposite to the communication hole.
8. The smoke discharging apparatus having a backflow air duct structure according to claim 6, wherein The machine body has a bottom shell, a middle shell and a panel stacked from bottom to top, the panel and the middle shell jointly form the smoking cavity, the heat dissipation cavity and the backflow cavity, the middle shell and the bottom shell jointly form the smoke exhaust cavity, the panel is provided with the electromagnetic element and the smoke inlet hole, the side wall of the middle shell is provided with the heat dissipation hole and the outflow hole, and the side wall of the bottom shell is provided with the smoke exhaust hole.
9. The smoke discharging apparatus having a backflow air duct structure according to claim 8, wherein The panel and the middle shell are detachably fixedly connected, and / or the middle shell and the bottom shell are detachably fixedly connected.