Range hood having an internal circulation filter for cooking fumes

Abstract

A range hood having an internal circulation filter for cooking fumes comprises a back cover (1). A suction block (2) is provided inside the back cover (1), and a blower (3) provided inside the suction block (2) is used to achieve adsorption of cooking fumes. The back cover (1) is further provided with a filtration device (4) in communication with an air outlet of the blower (3), and used to filter the cooking fumes. An internal circulation block (5) is connected and sealed to an air outlet end of the filtration device (4), so as to achieve internal circulation of filtered gasses. The range hood having an internal circulation filter for cooking fumes features a simple structure, and extends the service life of a range hood. The invention effectively absorbs excess heat in a kitchen, thereby lowering the internal ambient temperature of the kitchen.

Claims

1. Range hood having an internal circulation filter for cooking fumes, comprising a back cover (1), a suction block (2) is provided inside the back cover (1), and a blower (3) provided inside the suction block (2); wherein the back cover (1) is further provided with a filtration device (4) in communication with an air outlet of the blower (3), and an internal circulation block (5) is connected and sealed to an air outlet end of the filtration device (4); circulating line connected with an air outlet end of the filtration device (4) is provided in the internal circulation block (5); and the filtration device (4) comprises a filtration tank (6) for containing liquid; wherein blower wheel chassis (15) is provided below the suction block (2), an air drum (16) is arranged inside the the blower wheel chassis (15), an air inlet of the air drum (16) is connected to an air outlet of the blower (3), an air outlet of the air drum (16) is connected to the filtration tank (6) through an air drum connection pipe (7).

2. The range hood having an internal circulation filter for cooking fumes of claim 1, wherein the blower wheel chassis (15) is provided with a filtration box (8) between air outlet end of the filtration tank (6) and air inlet end of the internal circulation block (5).

3. The range hood having an internal circulation filter for cooking fumes of claim 2, wherein a filter is provided in the filtration box (8); the liquid in the filtration tank (6) is mixed with more than one of the deodorant, detergent or degreaser.

4. The range hood having an internal circulation filter for cooking fumes of claim 2, wherein a liquid-proof batten (9) is provided between the blower wheel chassis (15) and the filtration tank (6).

5. The range hood having an internal circulation filter for cooking fumes of claim 4, wherein baffle blocks (10) are provided on two sides of top portion of the filtration tank (6).

6. The range hood having an internal circulation filter for cooking fumes of claim 5, wherein the internal circulation block (5) is provided with one-way air curtain (11).

7. The range hood having an internal circulation filter for cooking fumes of claim 6, wherein the liquid contained in the filtration tank (6) is water.

8. The range hood having an internal circulation filter for cooking fumes of claim 7, wherein the filtration tank (6) is provided with a liquid-discharge valve port (18) and a water filling pipe (17).

Description

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS

(1) FIG. 1 is a schematic diagram showing the cooking fumes filtration and internal circulation flow of a range hood having an internal circulation filter for cooking fumes in embodiment 1 of the invention;

(2) FIG. 2 is a left view of FIG. 1 adding gas stove;

(3) FIG. 3 is a space diagram of FIG. 1 adding gas stove;

(4) FIG. 4 is an exploded view of a range hood having an internal circulation filter for cooking fumes in embodiment 1 of the invention.

(5) In the accompanying drawings, 1 refers to back cover, 2 refers to suction block, 3 refers to blower, 4 refers to filtration device, 5 refers to internal circulation block, 6 refers to filtration tank, 7 refers to air drum connection pipe, 8 refers to filtration box, 9 refers to liquid-proof batten, 10 refers to baffle blocks, 11 refers to one-way air curtain, 15 refers to blower wheel chassis, 16 refers to air drum, 17 refers to water filling pipe, and 18 refers to liquid-discharge valve port.

SPECIFIC DESCRIPTION OF THE PREFERRED EMBODIMENT

Embodiment 1

(6) As shown in FIGS. 1, 2, 3, and 4, a range hood having an internal circulation filter for cooking fumes in embodiment 1 comprises a back cover 1, a suction block 2 is provided inside the back cover, and a blower 3 provided inside the suction block is used to achieve adsorption of cooking fumes, the back cover is further provided with a filtration device 4 in communication with an air outlet of the blower, and used to filter the cooking fumes, an internal circulation block 5 is connected and sealed to an air outlet end of the filtration device 4 to achieve internal circulation of filtered gasses.

(7) In the embodiment, circulating line (not shown in the drawings) connected with an air outlet end of the filtration device 4 is provided in the internal circulation block 5.

(8) In the embodiment, the filtration device comprises a filtration tank 6 containing liquid to realize oil smoke filtration.

(9) In the embodiment, blower wheel chassis 15 is provided below the suction block, an air drum 16, communicated with an air duct of the blower and used for guiding wind direction, is arranged inside the the blower wheel chassis, and an air drum connection pipe 7 is provided in the blower wheel chassis between the air drum and the filtration tank to realize the oil smoke enters the liquid in the filtration tank from the air drum.

(10) In the embodiment, the blower wheel chassis is provided with a filtration box 8 between air outlet end of the filtration tank and air inlet end of the internal circulation block 5.

(11) In the embodiment, a liquid-proof batten 9 is provided between the blower wheel chassis and the filtration tank to achieve isolation of blower wheel chassis from liquid contamination in filtration tank.

(12) In the embodiment, baffle blocks 10 are provided on two sides of top portion of the filtration tank, which are used for preventing the liquid in the filtration tank from splashing caused by overlarge air inlet amount of the blower and isolating the oil concentrated on the two sides of the filtration tank from the water in the middle.

(13) In the embodiment, the internal circulation block is provided with one-way air curtain 11 used for separating air outside the range hood body and gas in the internal circulation block of the range hood.

(14) In the embodiment, the liquid contained in the filtration tank is water.

(15) In the embodiment, the filtration tank is provided with a liquid-discharge valve port 18 for removing oil and sewage and a water filling pipe 17 for injecting new water into the filtration tank.

(16) In the embodiment, the liquid in the filtration tank is mixed with more than one of the deodorant, detergent or degreaser, or any other additives capable of achieving the same cleaning and filtering functions of smell removal, oil removal and the like can be adopted; in the same way, a filter (not shown in the drawings) for removing smell and/or removing oil can be arranged in the filtration box, the same function or the the secondary optimization function can be achieved.

(17) The above description is merely preferred embodiment of the invention, and is not intent to limit the technical scope of the invention in any way. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the invention are still within the scope of the technical solution of the invention.