A kitchen range hood linked exhaust and air supply device

Abstract

The present invention discloses a linked exhaust and air supply device for a kitchen range hood, comprising a housing, wherein the bottom end face of the housing is integrally provided with a mounting plate, a side end face of the housing is integrally provided with an upper air inlet and outlet frame, an annular mesh frame is installed in the upper air inlet and outlet frame, a control circuit board is installed on the inner side wall of the housing, an arc-shaped baffle is provided on one side of the control circuit board, the arc-shaped baffle is fixedly connected to the top side wall of the housing, the bottom side wall of the housing is integrally provided with an annular frame, and a lifting air inlet and outlet assembly is installed in the annular frame. The present invention provides an air supply and air supply device for existing range hoods, provides fresh air for kitchen exhaust fumes, can effectively target kitchen exhaust fumes with large fumes and small spaces, ensures that the airflow organization in the kitchen has a slightly positive pressure, ensures the exhaust effect, has a good internal protective sealing effect, and can disinfect the kitchen air and kitchen utensils through an ultraviolet disinfection lamp, and is highly practical.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a linked exhaust and air supply device for a kitchen range hood. Background Art

[0002] A range hood is an electrical appliance used in home kitchens to remove fumes produced during cooking. It not only performs its functional role well, but also has a decorative concept that integrates with the modern kitchen layout.

[0003] The original intention of the research and development of this invention is mainly due to the fact that Chinese food is mainly stir-fried, and the oil smoke is large, which is harmful to the health of people who stay in the kitchen for a long time. Although the range hood products on the market have large suction power (17-20m 3 / hour). The current residential kitchen area is 5 square meters and the floor height is 2.2 meters. The overall kitchen is only 11 square meters. 3 The air can be discharged by the range hood. However, due to the lack of air in the kitchen environment, the exhaust effect is greatly reduced. The present invention can be linked with the range hood. When the range hood is exhausting, the high-tech kitchen will automatically send out filtered fresh air to ensure that the airflow in the kitchen is slightly positively pressured, thereby ensuring the exhaust effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the defects in the prior art and to propose a kitchen range hood linked exhaust and air supply device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A linked exhaust and air supply device for a kitchen range hood comprises a shell, a mounting plate is integrally provided on the bottom end face of the shell, an upper air inlet and outlet frame is integrally provided on one side end face of the shell, an annular mesh frame is installed in the upper air inlet and outlet frame, a control circuit board is installed on the inner side wall of the shell, an arc-shaped baffle is provided on one side of the control circuit board, the arc-shaped baffle is fixedly connected to the top side wall of the shell, an annular frame is integrally provided on the bottom side wall of the shell, a lifting inlet and outlet assembly is installed in the annular frame, a lifting disinfection assembly is installed at the bottom of the lifting inlet and outlet assembly, a lower air inlet and outlet is provided between the lifting inlet and outlet assembly and the annular frame, a plurality of ventilation holes are penetrated on the upper side wall of the annular frame, a fan mounting frame is provided on the right inner wall of the shell, a fan is installed in the fan mounting frame, and the fan mounting frame is connected to the upper air inlet and outlet frame.

[0007] As a further solution of the present invention: the lifting air inlet and outlet assembly includes a mounting frame, the upper end of the mounting frame is fixedly connected to a first rack plate, the upper end surface of the annular frame is integrated with a guide frame, the first rack plate is vertically slidably arranged in the guide frame, a first motor is installed on the outer side wall of the guide frame, the output end of the first motor is fixedly connected to a first driving gear, and the first driving gear is engaged with the teeth on the surface of the first rack plate.

[0008] As a further solution of the present invention: guide pillars are fixedly connected to the left and right sides of the bottom side wall of the installation frame, and guide pillar tubes are fixedly connected to the left and right sides of the upper side wall of the annular frame, and the upper ends of the guide pillars extend into the guide pillar tubes.

[0009] As a further solution of the present invention: the lifting and disinfection assembly includes a disinfection lamp mounting frame, the bottom end surface of the mounting frame is provided with an annular groove, the disinfection lamp mounting frame is placed in the annular groove, and a number of ultraviolet disinfection lamps are installed on the outer end of the disinfection lamp mounting frame. The upper end surface of the disinfection lamp mounting frame is fixedly connected to a second rack plate, and the upper end surface of the mounting frame is fixedly provided with a motor mounting seat, and a second motor is installed on the motor mounting seat. The output end of the second motor is fixedly connected to a second driving gear, and the second rack plate is vertically slid through the upper side wall of the mounting frame, and the teeth on the surface of the second driving gear and the second rack plate are meshed.

[0010] As a further solution of the present invention: a HEPA filter is provided between the fan mounting frame and the upper air inlet and outlet frame.

[0011] As a further solution of the present invention: an LED status light strip is installed on the bottom end surface of the shell.

[0012] As a further solution of the present invention: an annular sealing rubber ring is provided between the inner peripheral end of the mounting plate and the lower end of the annular frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the range hood in the kitchen is working, the fan is turned on, the lifting air inlet and outlet assembly moves downward, and the lower air inlet and outlet are leaked, so that the lower air inlet and outlet are connected with the ventilation hole and the inside of the shell. Under the action of the fan, fresh air enters from the upper air inlet and outlet frame and enters from the lower air inlet and outlet, providing fresh air for the kitchen oil smoke. It can effectively exhaust oil smoke in a kitchen with large oil smoke and small space, ensure that the air flow organization in the kitchen has a slight positive pressure, and ensure the exhaust effect. When the fan is reversed, the kitchen air can be discharged, and the above-mentioned air intake effect is combined with the effective purification of the kitchen air, reducing the breeding of bacteria in the kitchen. A control circuit board is installed on the inner wall of the shell to realize the automatic control of the above-mentioned exhaust fume purification operation. The control circuit board is an existing single-chip microcomputer controller to achieve efficient linkage with the range hood;

[0015] 2. The lifting air inlet and outlet assembly of the present invention includes a mounting frame. Specifically, when the first motor drives the first driving gear to rotate, the first driving gear and the teeth on the surface of the first rack plate engage with each other, so the rotation of the first driving gear can push the first rack plate and the mounting frame connected thereto to move up and down within the annular frame. When the mounting frame moves downward, the lower air inlet and outlet leak out to achieve air circulation. When the mounting frame moves upward, the mounting frame blocks the annular frame to prevent the accumulation of impurities such as oil smoke and dust in the casing when not in use, thereby improving the service life of the device.

[0016] 3. In the present invention, a HEPA filter is provided between the fan mounting frame and the upper air inlet and outlet frame. The provision of the HEPA filter can prevent the fresh air entering the kitchen from containing dust and impurities, which may cause pollution to the kitchen environment.

[0017] 4. An annular sealing rubber ring is provided between the inner end of the mounting plate and the lower end of the annular frame. The annular frame is installed independently, which facilitates the disassembly and maintenance of the entire device. The annular sealing rubber ring improves the installation sealing of the annular frame.

[0018] 5. The lifting and disinfection assembly in the present invention has a disinfection effect. Specifically, the second motor drives the second driving gear to rotate, and the second driving gear and the teeth on the surface of the second rack plate are engaged. Therefore, the rotation of the second driving gear can push the second rack plate and the disinfection lamp mounting frame connected to its lower end to vertically lift and lower along the annular groove. When the disinfection lamp mounting frame moves downward, the ultraviolet disinfection lamp installed at the outer end of the disinfection lamp mounting frame is turned on to purify and disinfect the kitchen air. When no disinfection is performed, the disinfection lamp mounting frame is moved up into the annular groove to protect the ultraviolet disinfection lamp.

[0019] To sum up, the present invention provides an air supply device for the existing range hood, provides fresh air for kitchen oil smoke exhaust, can effectively exhaust oil smoke in kitchens with large oil smoke and small spaces, ensures that the air flow organization in the kitchen has a slightly positive pressure, ensures the exhaust effect, has good internal protective sealing effect, and can disinfect the kitchen air and kitchen utensils through ultraviolet disinfection lamps, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a kitchen range hood linked exhaust and air supply device proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the front view and cross-sectional structure of a kitchen range hood linked exhaust and air supply device proposed by the present invention;

[0023] Figure 3This is a schematic diagram of the cross-sectional structure of the air inlet front view of a kitchen range hood linked exhaust and air supply device proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the exhaust front view cross-sectional structure of a kitchen range hood linked exhaust and air supply device proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of a disinfection front view of a kitchen range hood linked exhaust and air supply device proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the top view of a kitchen range hood linked exhaust and air supply device proposed by the present invention;

[0027] Figure 7 This is an enlarged structural diagram of point A of a kitchen range hood linkage exhaust and air supply device proposed by the present invention;

[0028] Figure 8 This is a bottom view structural schematic diagram of a kitchen range hood linked exhaust and air supply device proposed by the present invention.

[0029] In the figure: 1-upper air inlet and outlet frame, 2-annular mesh frame, 3-mounting plate, 4-housing, 5-arc baffle, 6-control circuit board, 7-annular frame, 8-mounting frame, 9-annular groove, 10-disinfection lamp mounting frame, 11-ultraviolet disinfection lamp, 12-fan, 13-fan mounting frame, 14-ventilation hole, 15-guide column, 16-lower air inlet and outlet, 17-guide column, 18-motor mounting seat, 19-second motor, 20-second driving gear, 21-second rack plate, 22-guide frame, 23-first rack plate, 24-first motor, 25-first driving gear, 26-LED status light strip, 27-HEPA filter, 28-lifting air inlet and outlet assembly, 29-lifting disinfection assembly, 30-annular sealing rubber ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0032] Example 1:

[0033] Reference Figure 1-8 , a kitchen range hood linked exhaust and air supply device includes a shell 4, the bottom end surface of the shell 4 is integrated with a mounting plate 3, one side end surface of the shell 4 is integrated with an upper air inlet and outlet frame 1, an annular mesh frame 2 is installed in the upper air inlet and outlet frame 1, a control circuit board 6 is installed on the inner side wall of the shell 4, an arc-shaped baffle 5 is provided on one side of the control circuit board 6, the arc-shaped baffle 5 is fixedly connected to the top side wall of the shell 4, the bottom side wall of the shell 4 is integrated with an annular frame 7, a lifting air inlet and outlet component 28 is installed in the annular frame 7, a lower air inlet and outlet 16 is provided between the lifting air inlet and outlet component 28 and the annular frame 7, a plurality of ventilation holes 14 are penetrated in the upper side wall of the annular frame 7, a fan mounting frame 13 is provided on the right side wall of the shell 4, a fan 12 is installed in the fan mounting frame 13, and the fan mounting frame 13 is connected to the upper air inlet and outlet frame 1.

[0034] The present invention provides a kitchen range hood linkage exhaust and air supply device, comprising a housing 4, a fan 12 installed therein, the fan 12 being connected to an upper air inlet and outlet frame 1 on a side wall of the housing 4, an annular frame 7 being integrally provided on the bottom side wall of the housing 4, a lifting air inlet and outlet assembly 28 being installed in the annular frame 7, a lower air inlet and outlet 16 being provided between the lifting air inlet and outlet assembly 28 and the annular frame 7, a plurality of ventilation holes 14 being provided on the upper side wall of the annular frame 7, a fan mounting frame 13 being provided on the right side wall of the housing 4, A fan 12 is installed. When the range hood in the kitchen is in operation, the fan 12 is turned on, the lifting air inlet and outlet assembly 28 is moved downward, and the lower air inlet and outlet 16 is leaked, so that the lower air inlet and outlet 16 is connected with the ventilation hole 14 and the interior of the housing 4. Under the action of the fan 12, fresh air enters from the upper air inlet and outlet frame 1 and enters from the lower air inlet and outlet 16, providing fresh air for kitchen exhaust fumes. It can effectively exhaust fumes in a kitchen with large oil smoke and small space, ensure that the airflow organization in the kitchen has a slight positive pressure, and ensure the exhaust effect;

[0035] When the fan 12 of the present invention is reversed, it can exhaust the kitchen air, and cooperate with the above-mentioned air intake effect to effectively purify the kitchen air and reduce the growth of bacteria in the kitchen;

[0036] The inner wall of the housing 4 in the present invention is provided with a control circuit board 6 to realize automatic control of the above-mentioned oil fume purification operation. The control circuit board 6 is an existing single chip microcomputer controller to realize efficient linkage with the range hood.

[0037] The lifting air inlet and outlet assembly 28 includes a mounting frame 8, the upper end of the mounting frame 8 is fixedly connected to a first rack plate 23, the upper end surface of the annular frame 7 is integrated with a guide frame 22, the first rack plate 23 is vertically slidably arranged in the guide frame 22, a first motor 24 is installed on the outer wall of the guide frame 22, the output end of the first motor 24 is fixedly connected to a first driving gear 25, and the first driving gear 25 is engaged with the teeth on the surface of the first rack plate 23.

[0038] The lifting air inlet and outlet assembly 28 of the present invention includes a mounting frame 8. Specifically, when the first motor 24 drives the first driving gear 25 to rotate, the first driving gear 25 and the teeth on the surface of the first rack plate 23 engage, so the rotation of the first driving gear 25 can push the first rack plate 23 and the mounting frame 8 connected thereto to move up and down in the annular frame 7. When the mounting frame 8 moves downward, the lower air inlet and outlet 16 leaks out to achieve air circulation. When the mounting frame 8 moves upward, the mounting frame 8 blocks the annular frame 7 to avoid the accumulation of impurities such as oil smoke and dust in the outer shell 4 when not working, thereby improving the service life of the device.

[0039] Guide pillars 17 are fixedly connected to the left and right sides of the bottom side wall of the installation frame 8 , and guide pillar tubes 15 are fixedly connected to the left and right sides of the upper side wall of the annular frame 7 . The upper ends of the guide pillars 17 extend into the guide pillar tubes 15 .

[0040] In the present invention, during the lifting process, the installation frame 8 in the lifting air inlet and outlet assembly 28 can be stably lifted and lowered along the guide column 15 to avoid misalignment between the installation frame 8 and the annular frame 7.

[0041] A HEPA filter 27 is provided between the fan mounting frame 13 and the upper air inlet and outlet frame 1 .

[0042] In the present invention, a HEPA filter 27 is provided between the fan mounting frame 13 and the upper air inlet and outlet frame 1. The provision of the HEPA filter 27 can prevent the fresh air entering the kitchen from containing dust and impurities, thereby preventing the kitchen environment from being polluted.

[0043] The bottom end surface of the housing 4 is provided with an LED status light strip 26 , which can indicate the working status of the device of the present invention.

[0044] An annular sealing rubber ring 30 is provided between the inner peripheral end of the mounting plate 3 and the lower end of the annular frame 7 .

[0045] An annular sealing rubber ring 30 is provided between the inner peripheral end of the mounting plate 3 and the lower end of the annular frame 7 in the present invention. The annular frame 7 is installed independently, which facilitates the disassembly and maintenance of the entire device. The annular sealing rubber ring 30 improves the installation sealing performance of the annular frame 7.

[0046] Example 2:

[0047] The difference between this embodiment and the above embodiment is that a lifting disinfection assembly 29 is installed at the bottom of the lifting air inlet and outlet assembly 28, and the lifting disinfection assembly 29 includes a disinfection lamp mounting frame 10. The bottom end surface of the mounting frame 8 is provided with an annular groove 9. The disinfection lamp mounting frame 10 is placed in the annular groove 9. A number of ultraviolet disinfection lamps 11 are installed on the outer end of the disinfection lamp mounting frame 10. The upper end surface of the disinfection lamp mounting frame 10 is fixedly connected to a second rack plate 21, and the upper end surface of the mounting frame 8 is fixedly provided with a motor mounting seat 18. A second motor 19 is installed on the motor mounting seat 18, and the output end of the second motor 19 is fixedly connected to a second driving gear 20. The second rack plate 21 is vertically slidably penetrated on the upper side wall of the mounting frame 8, and the teeth of the second driving gear 20 and the surface of the second rack plate 21 are engaged.

[0048] The lifting and disinfection component 29 in the present invention has a disinfection effect. Specifically, the second motor 19 drives the second driving gear 20 to rotate, and the teeth on the surface of the second driving gear 20 and the second rack plate 21 are engaged. Therefore, the rotation of the second driving gear 20 can push the second rack plate 21 and the disinfection lamp mounting frame 10 connected to its lower end to vertically lift and lower along the annular groove 9. When the disinfection lamp mounting frame 10 moves downward, at this time, the ultraviolet disinfection lamp 11 installed at the outer end of the disinfection lamp mounting frame 10 is turned on to purify and disinfect the kitchen air. When disinfection is not performed, the disinfection lamp mounting frame 10 is moved up into the annular groove 9 to protect the ultraviolet disinfection lamp 11.

[0049] The working principle and use process of the present invention: The present invention provides a kitchen range hood linkage exhaust and air supply device, including a shell 4, a fan 12 is installed in it, the fan 12 is connected to the upper air inlet and outlet frame 1 on the side wall of the shell 4, the bottom side wall of the shell 4 is integrated with a ring frame 7, a lifting air inlet and outlet component 28 is installed in the ring frame 7, a lower air inlet and outlet 16 is provided between the lifting air inlet and outlet component 28 and the ring frame 7, a plurality of ventilation holes 14 are penetrated on the upper side wall of the ring frame 7, a fan mounting frame 13 is provided on the right side wall of the shell 4, and the air inlet and outlet 16 is provided on the right side wall of the shell 4. The fan 12 is installed in the fan mounting frame 13. When the range hood in the kitchen is in operation, the fan 12 is turned on, the lifting air inlet and outlet assembly 28 is moved downward, and the lower air inlet and outlet 16 is leaked, so that the lower air inlet and outlet 16 is interconnected with the ventilation hole 14 and the interior of the housing 4. Under the action of the fan 12, fresh air enters from the upper air inlet and outlet frame 1 and enters from the lower air inlet and outlet 16, providing fresh air for kitchen exhaust fumes. It can effectively exhaust fumes in a kitchen with a large amount of oil smoke and a small space, ensure that the airflow organization in the kitchen has a slightly positive pressure, and ensure the exhaust effect.

[0050] When the fan 12 of the present invention is reversed, it can exhaust the kitchen air, and cooperate with the above-mentioned air intake effect to effectively purify the kitchen air and reduce the growth of bacteria in the kitchen;

[0051] The inner wall of the housing 4 of the present invention is equipped with a control circuit board 6 to realize the automatic control of the above-mentioned oil fume purification operation. The control circuit board 6 is an existing single-chip microcomputer controller to achieve efficient linkage with the range hood;

[0052] The lifting air inlet and outlet assembly 28 of the present invention includes a mounting frame 8. Specifically, when the first motor 24 drives the first driving gear 25 to rotate, the first driving gear 25 and the teeth on the surface of the first rack plate 23 engage with each other. Therefore, the rotation of the first driving gear 25 can push the first rack plate 23 and the mounting frame 8 connected thereto to move up and down in the annular frame 7. When the mounting frame 8 moves downward, the lower air inlet and outlet 16 leaks out to achieve air circulation. When the mounting frame 8 moves upward, the mounting frame 8 blocks the annular frame 7 to prevent the accumulation of impurities such as oil smoke and dust in the housing 4 when not in operation, thereby improving the service life of the device.

[0053] In the present invention, a HEPA filter 27 is provided between the fan mounting frame 13 and the upper air inlet and outlet frame 1. The provision of the HEPA filter 27 can prevent the fresh air entering the kitchen from containing dust and impurities, thereby preventing the kitchen environment from being polluted.

[0054] An annular sealing rubber ring 30 is provided between the inner peripheral end of the mounting plate 3 and the lower end of the annular frame 7 in the present invention. The annular frame 7 is installed independently, which facilitates the disassembly and maintenance of the entire device. The annular sealing rubber ring 30 improves the installation sealing performance of the annular frame 7.

[0055] The lifting and disinfection component 29 in the present invention has a disinfection effect. Specifically, the second motor 19 drives the second driving gear 20 to rotate, and the teeth on the surface of the second driving gear 20 and the second rack plate 21 are engaged. Therefore, the rotation of the second driving gear 20 can push the second rack plate 21 and the disinfection lamp mounting frame 10 connected to its lower end to vertically lift and lower along the annular groove 9. When the disinfection lamp mounting frame 10 moves downward, at this time, the ultraviolet disinfection lamp 11 installed at the outer end of the disinfection lamp mounting frame 10 is turned on to purify and disinfect the kitchen air. When disinfection is not performed, the disinfection lamp mounting frame 10 is moved up into the annular groove 9 to protect the ultraviolet disinfection lamp 11.

[0056] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A kitchen range hood linked exhaust and air supply device, comprising a housing (4), characterized in that: The bottom end face of the shell (4) is integrally provided with a mounting plate (3); an upper air inlet and outlet frame (1) is integrally provided on one side end face of the shell (4); an annular mesh frame (2) is installed in the upper air inlet and outlet frame (1); a control circuit board (6) is installed on the inner side wall of the shell (4); an arc-shaped baffle (5) is provided on one side of the control circuit board (6); the arc-shaped baffle (5) is fixedly connected to the inner top side wall of the shell (4); an annular frame (7) is integrally provided on the bottom side wall of the shell (4); the annular frame (7) is integrally provided ) is installed with a lifting air inlet and outlet assembly (28), a lifting disinfection assembly (29) is installed at the bottom of the lifting air inlet and outlet assembly (28), a lower air inlet and outlet (16) is provided between the lifting air inlet and outlet assembly (28) and the annular frame (7), a plurality of ventilation holes (14) are provided on the upper side wall of the annular frame (7), a fan mounting frame (13) is provided on the right side wall of the housing (4), a fan (12) is installed in the fan mounting frame (13), and the fan mounting frame (13) is connected to the upper air inlet and outlet frame (1); The lifting air inlet and outlet assembly (28) includes a mounting frame (8), the upper end of the mounting frame (8) is fixedly connected to a first rack plate (23), the upper end surface of the annular frame (7) is integrally provided with a guide frame (22), the first rack plate (23) is vertically slidably arranged in the guide frame (22), a first motor (24) is installed on the outer side wall of the guide frame (22), the output end of the first motor (24) is fixedly connected to a first driving gear (25), and the first driving gear (25) and the tooth gap on the surface of the first rack plate (23) are meshed.

2. A kitchen range hood linked exhaust and air supply device according to claim 1, characterized in that: Guide columns (17) are fixedly connected to the left and right sides of the bottom side wall of the installation frame (8), and guide column tubes (15) are fixedly connected to the left and right sides of the upper side wall of the annular frame (7), and the upper ends of the guide columns (17) extend into the guide column tubes (15).

3. The kitchen range hood linked exhaust and air supply device according to claim 2, characterized in that: The lifting disinfection assembly (29) includes a disinfection lamp mounting frame (10), the bottom end surface of the mounting frame (8) is provided with an annular groove (9), the disinfection lamp mounting frame (10) is placed in the annular groove (9), and a plurality of ultraviolet disinfection lamps (11) are installed on the outer end of the disinfection lamp mounting frame (10). The upper end surface of the disinfection lamp mounting frame (10) is fixedly connected to a second rack plate (21), the upper end surface of the mounting frame (8) is fixedly provided with a motor mounting seat (18), and a second motor (19) is installed on the motor mounting seat (18). The output end of the second motor (19) is fixedly connected to a second driving gear (20), and the second rack plate (21) is vertically slidably penetrated on the upper side wall of the mounting frame (8), and the second driving gear (20) and the second rack plate (21) are meshed with each other.

4. The kitchen range hood linked exhaust and air supply device according to claim 3, characterized in that: A HEPA filter (27) is provided between the fan mounting frame (13) and the upper air inlet and outlet frame (1).

5. The kitchen range hood linked exhaust and air supply device according to claim 4, characterized in that: An LED status light strip (26) is installed on the bottom end surface of the housing (4).

6. The kitchen range hood linked exhaust and air supply device according to claim 5, characterized in that: An annular sealing rubber ring (30) is provided between the inner peripheral end of the mounting plate (3) and the lower end of the annular frame (7).

Images