Compact range hood

Abstract

The utility model relates to the field of range hoods, in particular to a compact range hood, which comprises a volute and a box body, an air outlet of the volute is flush with the top of the box body, the height of the volute is equal to that of the box body, and two sides of the volute are flush with two sides of the box body; the volute comprises side plates and a surrounding plate, the surrounding plate is arranged between the side plates and is of an arc-shaped structure, the arc-shaped structure comprises an arc section and a spiral line section, and the spiral line section is a logarithmic spiral line. After the scheme is adopted, reasonable design is performed according to requirements, the kitchen space volume is saved, and the material cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of range hoods, in particular to a compact range hood. Background Art

[0002] The fan system of the range hood is one of its core components and is the core power system of the range hood. In most households, the kitchen space is limited, so the size of the range hood cabinet cannot be too large, but the volute, as the main component of the fan system, occupies most of its volume. What's more, the unreasonable design of the volute will exceed the allowable range of the cabinet. How to design a volute suitable for a narrow cabinet fan system and make the internal structure of the cabinet more compact has become a difficult problem in the field of kitchen appliances.

[0003] Therefore, the inventor conducted further research and developed a compact range hood, which resulted in the present invention. Utility Model Content

[0004] The utility model aims to provide a compact range hood which is reasonably designed according to the requirements, saves the kitchen space and reduces the material cost.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A compact range hood comprises a volute and a housing.

[0007] The air outlet of the volute is flush with the top of the box body, the height of the volute is equal to the height of the box body, and the two sides of the volute are flush with the two sides of the box body; the volute includes side panels and enclosures, the enclosures are arranged between the side panels to form an arc-shaped structure, the arc-shaped structure includes circular arc segments and spiral segments, and the spiral segments are logarithmic spirals.

[0008] Reduce the box size as much as possible, maximize space utilization, and optimize the volute structure to make it aerodynamic and make the airflow smoother.

[0009] Furthermore, a circular through slot is provided on the side plate, and the through slot is used for installing the fan assembly.

[0010] The fan assembly comprises a motor, a bracket and an impeller. The bracket is arranged in the through slot and the motor is mounted on the bracket.

[0011] Furthermore, the outlet opening angle of the air outlet is θ 1 , the outlet inclination angle is θ 2 , where the arc formed by the opening angle and the enclosure is the volute tongue, the shortest gap from the volute tongue to the through slot is a, and the radius of the volute tongue is r 1 , the radius of the slot is R, and the vertical distance from the slot to the starting point of the outlet inclination angle is d 1 , the vertical distance from the outlet to the outlet is d 2, define the arc segment L arc and the spiral segment L sqiral , where the arc segment angle is equal to θ acr2 , the arc radius L arc =R+a, spiral segment where θ∈[θ arc2 ,2π],a norm =d 1 .

[0012] Among them, when the impeller size is consistent with the through groove, the through groove radius R is also the impeller radius.

[0013] Furthermore, a smoke collecting chamber is arranged below the box body, an inclined smoke baffle is arranged directly in front of the smoke collecting chamber, a smoking port is arranged below the smoke baffle, and a filter is arranged at the smoking port.

[0014] Furthermore, the smoke shield is rectangular in shape as a whole, and is a tempered glass smoke shield.

[0015] Furthermore, the smoke collecting chamber has air inlet side panels on both sides, which are trapezoidal in shape as a whole and are made of stainless steel.

[0016] After adopting the above scheme, the utility model has the following advantages compared with the prior art:

[0017] The volute is composed of a single arc and Archimedean spiral based on the size of the volute tongue gap. It has a reasonable and simple structure and can be reasonably adjusted according to the size of the box. The fan system has a compact structure, and the upper and lower left and right sides of the volute are flush with the box, which minimizes the size of the box, maximizes space utilization, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the utility model;

[0019] Figure 2 Shown as a cutaway view of the box;

[0020] Figure 3 It is a schematic diagram of the volute;

[0021] Figure 4 It is a schematic diagram of the airflow of the volute;

[0022] Figure 5 It is a schematic diagram indicating various parameters of the volute;

[0023] Description of symbols

[0024] Box body 1, smoke collecting chamber 2, smoke baffle 21, filter screen 22,

[0025] volute 3, arc segment 31, spiral segment 32, through groove 33, volute tongue 34,

[0026] Impeller 4, motor 5, bracket 6. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] like Figure 1 , 2 As shown, a compact range hood comprises a housing 1, a smoke collecting chamber 2 is arranged below the housing 1, an inclined smoke baffle 21 is arranged directly in front of the smoke collecting chamber 2, a smoking port is arranged below the smoke baffle 21, a filter screen 22 is arranged at the smoking port, and an oil cup is arranged below the smoke collecting chamber 2; wherein, the smoke baffle 21 is rectangular as a whole and is made of tempered glass, and both sides of the smoke collecting chamber 2 are air inlet side plates, and the air inlet side plates are trapezoidal as a whole and are made of stainless steel.

[0029] A volute 3 is provided in the box body 1 , an air outlet of the volute 3 is flush with the top of the box body 1 , a height of the volute 3 is equal to a height of the box body 1 , and two sides of the volute 3 are flush with two sides of the box body 1 .

[0030] like Figure 3 , 4 As shown, the volute 3 includes a side plate and a surrounding plate, the surrounding plate is arranged between the side plates and has an arc-shaped structure, the arc-shaped structure includes a circular arc segment 31 and a spiral line segment 32, and the spiral line segment 32 is a logarithmic spiral. A circular through groove is opened on the side plate, and the through groove is used to install a bracket 6. A motor 5 is arranged in the bracket 6, and the motor 5 drives the impeller 4 to rotate.

[0031] In this embodiment, the main body of the volute 3 is on the left, the air outlet is on the right, and the air outlet is inclined to the left, and the opening angle on the left side of the air outlet is θ 1 , the right side of the air outlet has an inclination angle of θ 2 At the same time, the curved part on the left side of the air outlet is defined as the volute tongue 34, the shortest gap between the volute tongue 34 and the through slot is a, and the radius of the volute tongue 34 is r 1 , the radius of the slot is R (when the size of the impeller 4 is the same as the slot, the radius of the slot R is also the radius of the impeller 4), and the vertical distance from the slot to the starting point of the left inclination angle is d 1 , the vertical distance from the outlet to the outlet is d 2 , define the arc segment L arc and the spiral segment L sqiral , where the arc segment angle is equal to θ acr2 , the arc radius L arc =R+a, then the spiral segment satisfies where θ∈[θ arc2 ,2π],a norm =d 1 , is an ideal line segment.

[0032] The above are only specific embodiments of the present utility model. At the same time, all words such as "upper, lower, left, right, middle" involved in the present utility model are for reference only and are not absolutely limiting. Any non-substantial changes made using the present utility model shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A compact range hood, characterized in that: Including volute, box body, The air outlet of the volute is flush with the top of the box body, the height of the volute is equal to the height of the box body, and the two sides of the volute are flush with the two sides of the box body; the volute includes side panels and enclosures, the enclosures are arranged between the side panels to form an arc-shaped structure, the arc-shaped structure includes circular arc segments and spiral segments, and the spiral segments are logarithmic spirals.

2. A compact range hood according to claim 1, characterized in that: A circular through slot is provided on the side plate, and the through slot is used for installing the fan assembly.

3. A compact range hood according to claim 2, characterized in that: The outlet opening angle of the air outlet is θ1, and the outlet inclination angle is θ2. The arc formed by the opening angle and the enclosure is the volute tongue. The shortest gap from the volute tongue to the through slot is a. The radius of the volute tongue is r1, the radius of the through slot is R, the vertical distance from the through slot to the starting point of the outlet inclination angle is d1, and the vertical distance from the outlet inclination angle to the air outlet is d2. The arc segment L is defined as arc and the spiral segment L sqiral , where the arc segment angle is equal to θ acr2 , the arc radius L arc =R+a, spiral segment where θ∈[θ arc2 ,2π],a norm =d1.

4. The compact range hood according to claim 1, characterized in that: A smoke collecting chamber is arranged below the box body, a smoke baffle plate is arranged obliquely in front of the smoke collecting chamber, a smoking port is arranged below the smoke baffle plate, and a filter screen is arranged at the smoking port.

5. A compact range hood according to claim 4, characterized in that: The smoke shield is rectangular in shape as a whole and is a tempered glass smoke shield.

6. The compact range hood according to claim 4, characterized in that: The two sides of the smoke collecting chamber are air inlet side panels, which are trapezoidal in shape as a whole and are made of stainless steel.

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