Volute fan and integrated cooker

Abstract

The utility model belongs to the technical field of integrated stoves, and discloses a volute fan and an integrated stove, in the volute fan, oil smoke entering a box body from an air inlet hole can be shunted by a sharp corner, so that bidirectional air inlet of a fan assembly is facilitated, turbulent flow in the box body is effectively reduced, the impact area of the oil smoke and a shunt is small, and the service life of the volute fan is prolonged. Therefore, noise generated by oil smoke impact can be effectively reduced. In addition, micropore noise reduction structures are formed on the first plate part and the second plate part, and a resonant cavity is formed in the flow divider, so that noise generated by impact of oil smoke on the flow divider can be effectively reduced and absorbed, the noise generated in the working process of the volute fan is reduced, and then the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated stoves, and in particular to a volute fan and an integrated stove. Background Art

[0002] Integrated stove, also known as environmentally friendly stove or integrated environmentally friendly stove, is a kitchen appliance that integrates multiple functions such as smoke extractor, gas stove, disinfection cabinet, storage cabinet, etc. It has the advantages of saving space, good fume extraction effect, energy saving, low consumption and environmental protection.

[0003] Among them, the smoke extractor is used to extract the oil smoke during the cooking process, so as to avoid affecting the health of the user and reduce the oil smoke attached to the kitchen utensils and kitchen walls. The smoke extractor includes a fan, which is used to quickly extract the oil smoke during the cooking process and discharge it outdoors. In the prior art, the fan is generally a centrifugal volute fan, which includes a box body, a soundproof cover and a fan assembly. The soundproof cover is arranged in the box body, and an air inlet is opened on the box body. The air inlet is connected to the smoke outlet of the integrated stove head. The fan assembly is installed in the soundproof cover. Air inlets are arranged on both sides of the soundproof cover. The arrangement direction of the two air inlets is perpendicular to the opening direction of the air inlet. The fan assembly can inhale the oil smoke generated during the cooking process through the smoke outlet, the air inlet and the air inlet, and discharge the oil smoke outdoors. Since the radial cross-section of the sound insulation cover (the cross-section perpendicular to the axial direction of the fan assembly) is rectangular, the oil smoke will impact the side wall of the sound insulation cover after entering the box through the air inlet, causing the volute fan to generate loud noise during operation, thereby affecting the user experience.

[0004] Therefore, the above problems need to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide a volute fan and an integrated stove to reduce the noise generated during the operation of the volute fan, thereby improving the user experience.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] On one hand, the utility model provides a volute fan, comprising a box body, a soundproof cover and a fan assembly, wherein the soundproof cover is arranged in the box body, an air inlet hole is opened on the box body, and the fan assembly is installed in the soundproof cover, and the soundproof cover is respectively provided with a first air inlet and a second air inlet on both sides along a first direction, wherein the first direction is parallel to the axial direction of the fan assembly, the air inlet hole is opened along a second direction, and the second direction is perpendicular to the first direction, and the volute fan further comprises:

[0008] The diverter is installed on one side of the sound insulation cover along the second direction, and includes a first plate portion and a second plate portion, the first plate portion and the second plate portion are both installed on the sound insulation cover, the side of the first plate portion close to the sound insulation cover and the side of the second plate portion close to the sound insulation cover are spaced apart along the first direction, the side of the first plate portion away from the sound insulation cover and the side of the second plate portion away from the sound insulation cover intersect and form a sharp angle, the sharp angle is arranged opposite to the air inlet, the first plate portion, the second plate portion and the sound insulation cover form a cavity, and a plurality of air holes are arranged on the first plate portion and the second plate portion.

[0009] Preferably, a partition is provided inside the diverter, and the partition is configured to separate the cavity.

[0010] Preferably, the partition divides the cavity into a plurality of chambers.

[0011] Preferably, the diverter further comprises a sound insulation board, which is installed on one side of the sound insulation cover along the second direction and is located in the cavity, and the sound insulation board is made of a high-density, high-damping material.

[0012] Preferably, the sound insulation board is arranged between the first plate portion and the second plate portion and completely covers one side of the sound insulation cover along the second direction, and the edge of the first plate portion and the edge of the second plate portion are both in contact with the edge of the sound insulation board.

[0013] Preferably, sound-absorbing cotton is provided on the side of the sound insulation board facing away from the sound insulation cover.

[0014] Preferably, the sound insulation board and the sound-absorbing cotton are integrally formed.

[0015] Preferably, the edge of the first plate portion and the edge of the second plate portion are both in contact with the edge of the sound insulation cover.

[0016] Preferably, the first plate portion and the second plate portion are both snap-connected to the sound insulation cover via buckles.

[0017] On the other hand, the utility model further provides an integrated stove, comprising an integrated stove head and the volute fan as described above, wherein the air inlet hole is connected to a smoking port arranged on the integrated stove head.

[0018] Beneficial effects of the utility model: In the utility model, the oil smoke entering the box through the air inlet can be diverted by the sharp corners, so as to enter the fan assembly through the first air inlet and the second air inlet respectively, which is beneficial to the two-way air intake of the fan assembly and effectively reduces the turbulence inside the box, and the impact area between the oil smoke and the diverter is small, thereby effectively reducing the noise generated by the impact of the oil smoke. In addition, since microporous noise reduction structures are formed on both the first plate portion and the second plate portion, and a resonance cavity is formed inside the diverter, when the oil smoke reaches the diverter, the positive-pressure gas in the pores and the resonance cavity moves back and forth under the action of sound waves. This moving airflow has a certain mass, and it resists the movement caused by the action of sound waves. At the same time, when the airflow enters the pores, due to the friction and damping of the pore walls, a considerable part of the sound energy is lost due to heat consumption. Moreover, the cavity filled with gas forms a positive pressure environment, which can hinder the pressure changes from the pores. Under the joint action of the above factors, the noise generated by the oil smoke impacting the diverter can be effectively reduced and absorbed, thereby reducing the noise generated during the operation of the volute blower, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a volute fan in an embodiment of the utility model;

[0020] Figure 2 It is an exploded view of the volute fan in the embodiment of the utility model;

[0021] Figure 3 It is an exploded view of the volute fan outside the casing in the embodiment of the utility model;

[0022] Figure 4 It is one of the exploded views of the diverter in the embodiment of the utility model;

[0023] Figure 5 This is the second exploded view of the diverter in the embodiment of the utility model;

[0024] Figure 6 It is a cross-sectional view of the volute fan outside the casing of the embodiment of the utility model along the cross section passing through the axis of the fan assembly;

[0025] Figure 7 yes Figure 6 A partial enlarged view of the middle A;

[0026] Figure 8 yes Figure 6 A partial enlarged view of point B in the middle.

[0027] In the figure:

[0028] 1. Box body; 11. Air inlet; 2. Soundproof cover; 21. First air inlet; 22. Second air inlet; 23. Slot; 3. Fan assembly; 4. Diverter; 41. First plate; 411. Air hole; 412. Buckle; 42. Second plate; 43. Partition; 44. Chamber; 45. Soundproof board; 46. Sound-absorbing cotton; 47. Third plate; 48. Fourth plate. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, 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 cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] The present embodiment provides an integrated stove, which includes an integrated stove head and a volute fan, and a smoke intake port is arranged on the integrated stove head.

[0034] See also Figures 1 to 8 The volute fan includes a box body 1, a soundproof cover 2 and a fan assembly 3. The soundproof cover 2 is arranged in the box body 1. An air inlet 11 is opened on the box body 1. The fan assembly 3 is installed in the soundproof cover 2. The fan assembly 3 is a centrifugal fan. The soundproof cover 2 is respectively provided with a first air inlet 21 and a second air inlet 22 on both sides along a first direction. The first direction is parallel to the axial direction of the fan assembly 3. The air inlet 11 is opened along a second direction, and the second direction is perpendicular to the first direction. The air inlet 11 is connected with a smoking port arranged on the head of the integrated stove. During cooking, oil smoke can enter the box body 1 through the smoking port and the air inlet 11, and enter the fan assembly 3 through the first air inlet 21 and the second air inlet 22. The fan assembly 3 can discharge the inhaled oil smoke outdoors.

[0035] It is worth noting that, since the specific structure and working principle of the centrifugal fan are both existing technologies, they will not be described in detail in this embodiment.

[0036] In addition to the box body 1, the sound insulation cover 2 and the fan assembly 3, the volute fan in this embodiment also includes a diverter 4, which is installed on one side of the sound insulation cover 2 along the second direction and includes a first plate portion 41 and a second plate portion 42. The first plate portion 41 and the second plate portion 42 are both installed on the sound insulation cover 2. The side of the first plate portion 41 close to the sound insulation cover 2 and the side of the second plate portion 42 close to the sound insulation cover 2 are spaced apart along the first direction. The side of the first plate portion 41 away from the sound insulation cover 2 and the side of the second plate portion 42 away from the sound insulation cover 2 intersect and form a sharp angle. The sharp angle is arranged opposite to the air inlet hole 11, that is, the sharp angle is arranged toward the air inlet hole 11. The first plate portion 41, the second plate portion 42 and the sound insulation cover 2 form a cavity. A plurality of air holes 411 are arranged on the first plate portion 41 and the second plate portion 42, that is, a resonance cavity is formed inside the diverter 4, and air holes 411 are arranged on the first plate portion 41 and the second plate portion 42 to reach the resonance cavity.

[0037] Based on the above, in the present embodiment, the oil smoke entering the housing 1 through the air inlet 11 can be diverted by the sharp corners, thereby entering the fan assembly 3 through the first air inlet 21 and the second air inlet 22 respectively, thereby facilitating the two-way air intake of the fan assembly 3 and effectively reducing the turbulence inside the housing 1. In addition, the impact area between the oil smoke and the diverter 4 is small, thereby effectively reducing the noise generated by the impact of the oil smoke. In addition, since microporous noise reduction structures are formed on both the first plate portion 41 and the second plate portion 42, and a resonance cavity is formed inside the diverter 4, when the oil smoke reaches the diverter 4, the positive-pressure gas in the pores 411 and the resonance cavity moves back and forth under the action of sound waves. This moving airflow has a certain mass, and it resists the movement caused by the action of sound waves. At the same time, when the airflow enters the pores 411, due to the friction and damping of the pore walls, a considerable portion of the sound energy is lost due to heat consumption, and the gas-filled cavity forms a positive pressure environment, which can hinder the pressure changes from the pores 411. Under the joint action of the above factors, the noise generated by the oil smoke impacting the diverter 4 can be effectively reduced and absorbed, thereby reducing the noise generated during the operation of the volute blower, thereby improving the user experience.

[0038] It can be understood that the diverter 4 also includes a third plate portion 47 and a fourth plate portion 48, and the third plate portion 47 and the fourth plate portion 48 are both installed between the first plate portion 41 and the second plate portion 42, and are respectively located at the two ends of the first plate portion 41 and the second plate portion 42, and the third plate portion 47 and the fourth plate portion 48 are also installed on the sound insulation cover 2, so that the diverter 4 is covered on one side of the sound insulation cover 2 along the second direction.

[0039] Preferably, the first plate portion 41 and the second plate portion 42 are both connected to the sound insulation cover 2 by means of the buckle 412 . In addition, the third plate portion 47 and the fourth plate portion 48 are also connected to the sound insulation cover 2 by means of the buckle 412 , thereby facilitating the disassembly and assembly of the diverter 4 .

[0040] Specifically, buckles 412 are provided on the first plate portion 41, the second plate portion 42, the third plate portion 47 and the fourth plate portion 48, and a plurality of slots 23 are arranged along the contour of the sound insulation cover 2 on one side along the second direction, and the buckles 412 on the first plate portion 41, the second plate portion 42, the third plate portion 47 and the fourth plate portion 48 are respectively placed in the plurality of slots 23.

[0041] It should be noted that, in the present embodiment, the edges of the first plate portion 41 and the edges of the second plate portion 42 are both in contact with the edges of the soundproof cover 2, thereby ensuring that there is no gap between the soundproof cover 2 and the first plate portion 41 and the second plate portion 42, thereby ensuring that a resonance cavity can be effectively formed inside the diverter 4.

[0042] In addition, a partition 43 is provided inside the diverter 4 , and the partition 43 is configured to separate the cavity, thereby increasing the number of resonance cavities formed in the diverter 4 , thereby further reducing the noise generated by the oil smoke impacting the diverter 4 .

[0043] Furthermore, the partition 43 divides the cavity into a plurality of chambers 44 , thereby forming a plurality of resonance cavities in the diverter 4 , thereby further increasing the number of resonance cavities formed in the diverter 4 , and further reducing the noise generated by the oil smoke impacting the diverter 4 .

[0044] In addition to the first plate portion 41 and the second plate portion 42, the diverter 4 also includes a sound insulation board 45, which is installed on one side of the sound insulation cover 2 along the second direction and is located in the cavity. The sound insulation board 45 is made of high-density, high-damping material, so it has the characteristic of reflecting sound waves. The sound insulation board 45 can block the noise generated by the fan assembly 3 in the sound insulation cover 2 from propagating outward, thereby further enhancing the user experience.

[0045] Preferably, the sound insulation board 45 is arranged between the first plate portion 41 and the second plate portion 42, and completely covers one side of the sound insulation cover 2 along the second direction. The edges of the first plate portion 41 and the edges of the second plate portion 42 are both in contact with the edges of the sound insulation board 45, so that there is no gap between the sound insulation board 45 and the first plate portion 41 and the second plate portion 42, thereby further effectively blocking the noise generated by the fan assembly 3 in the sound insulation cover 2 from propagating outward, thereby further improving the user experience.

[0046] Furthermore, a sound-absorbing cotton 46 is provided on the side of the sound insulation board 45 facing away from the sound insulation cover 2. The oil smoke entering the diverter 4 can impact the sound-absorbing cotton 46, and the sound-absorbing cotton 46 can absorb the energy of the sound waves, thereby further reducing the noise generated during the operation of the volute fan, thereby further improving the user experience.

[0047] Specifically, the side of the sound-absorbing cotton 46 facing away from the sound insulation board 45 is a four-sided array of wave-peak structures, and there are many pores on the surface of the sound-absorbing cotton 46 facing away from the sound insulation board 45. After the air flow passes through the air holes 411 and enters the cavity, its incident wave is refracted through the wave-peak structure to form a reflected wave, and the incident wave and the reflected sound wave collide with each other, so that the sound energy is absorbed due to heat loss.

[0048] It is worth mentioning that the sound insulation board 45 and the sound-absorbing cotton 46 are integrally formed to form a composite board. In addition to being able to silence the sound waves in the incoming flow direction, the composite board can also block the noise generated by the fan assembly 3 from propagating to the outside, thereby having a secondary noise isolation effect.

[0049] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A volute fan, comprising a housing (1), a soundproof cover (2) and a fan assembly (3), wherein the soundproof cover (2) is arranged in the housing (1), an air inlet hole (11) is opened on the housing (1), the fan assembly (3) is installed in the soundproof cover (2), a first air inlet (21) and a second air inlet (22) are respectively arranged on both sides of the soundproof cover (2) along a first direction, the first direction is parallel to the axial direction of the fan assembly (3), the air inlet hole (11) is opened along a second direction, and the second direction is perpendicular to the first direction, characterized in that: The volute fan also includes: The flow divider (4) is mounted on one side of the soundproof cover (2) along the second direction, and comprises a first plate portion (41) and a second plate portion (42); the first plate portion (41) and the second plate portion (42) are both mounted on the soundproof cover (2); a side of the first plate portion (41) close to the soundproof cover (2) and a side of the second plate portion (42) close to the soundproof cover (2) are arranged at intervals along the first direction; a side of the first plate portion (41) away from the soundproof cover (2) and a side of the second plate portion (42) away from the soundproof cover (2) intersect and form a sharp angle; the sharp angle is arranged opposite to the air inlet hole (11); the first plate portion (41), the second plate portion (42) and the soundproof cover (2) form a cavity; and a plurality of air holes (411) are arranged on the first plate portion (41) and the second plate portion (42).

2. The volute blower according to claim 1, characterized in that: A partition (43) is arranged inside the diverter (4), and the partition (43) is configured to separate the cavity.

3. The volute fan according to claim 2, characterized in that: The partition (43) divides the cavity into a plurality of chambers (44).

4. The volute fan according to claim 1, characterized in that: The diverter (4) further comprises a sound insulation board (45), wherein the sound insulation board (45) is installed on one side of the sound insulation cover (2) along the second direction and is located in the cavity, and the sound insulation board (45) is made of a high-density, high-damping material.

5. The volute fan according to claim 4, characterized in that: The sound insulation board (45) is arranged between the first board portion (41) and the second board portion (42), and completely covers one side of the sound insulation cover (2) along the second direction, and the edge of the first board portion (41) and the edge of the second board portion (42) are both in contact with the edge of the sound insulation board (45).

6. The volute fan according to claim 4, characterized in that: A sound-absorbing cotton (46) is arranged on the side of the sound insulation board (45) facing away from the sound insulation cover (2).

7. The volute blower according to claim 6, characterized in that: The sound insulation board (45) and the sound absorbing cotton (46) are integrally formed.

8. The volute blower according to claim 1, characterized in that: The edge of the first plate portion (41) and the edge of the second plate portion (42) are both in contact with the edge of the soundproof cover (2).

9. The volute blower according to claim 1, characterized in that: The first plate portion (41) and the second plate portion (42) are both snap-connected to the soundproof cover (2) via snap buckles (412).

10. Integrated stove, characterized in that: It comprises an integrated stove head and a volute fan as claimed in any one of claims 1 to 9, wherein the air inlet hole (11) is connected to a smoke outlet arranged on the integrated stove head.

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