CN212985563U

CN212985563U - Fan system and new fan with same

Info

Publication number: CN212985563U
Application number: CN202021026205.4U
Authority: CN
Inventors: 刘洪丽; 陈猛; 贾超; 严东旭; 霍彦强; 郑军妹
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-04-16
Anticipated expiration: 2030-06-05

Abstract

The utility model relates to a fan system and applied new fan that has this fan system, fan system include the backward centrifugal fan, its characterized in that: still include the spiral case, this spiral case has preceding spiral case, the back spiral case that can lock each other, back centrifugal fan locates in the spiral case and the back shirks the formula and connects on the inner wall of back spiral case, it has the air intake, and is corresponding to open on the preceding spiral case, the front side of back centrifugal fan has the inlet scoop that corresponds this air intake and arrange, the synthetic air outlet is enclosed jointly to the top edge of preceding spiral case and the top edge of back spiral case. The utility model discloses be provided with preceding spiral case and back spiral case that can each other lock with the spiral case, after locate in the spiral case and the back shirks the formula and connect on the inner wall of back spiral case to centrifugal fan, during the assembly, earlier install after to centrifugal fan on the spiral case of back, will preceding spiral case and back spiral case pair and lock again, be convenient for carry out dismouting and later maintenance to centrifugal fan after to, be favorable to improving production efficiency.

Description

Fan system and new fan with same

Technical Field

The utility model relates to a fan system convenient to equipment and applied new fan that has this fan system.

Background

Centrifugal fans have been widely introduced for their advantages of large suction, low noise, compact structure, etc. In the prior art, a backward centrifugal fan is widely used in fields with high requirements on acoustic quality, such as an air purifier.

The patent of chinese utility model with the publication number CN207162856U entitled "fresh air ventilator" (application number: cn201721200269.x) discloses a structure, which comprises a case, a fan device, an air purification device, and an installation hanger, wherein the case is movably connected with the installation hanger by a hook, a fresh air inlet and an air supply outlet are arranged on the case wall, an electric valve device is arranged in the fresh air inlet, the fan device is a centrifugal fan with a forward vane of a volute or a backward vane without a volute, and the air purification device comprises a high efficiency air filter and a medium efficiency air filter. The high-efficiency air filter is double-person-shaped or U-shaped, and the fan device can be contained in the U-shaped high-efficiency air filter.

Currently, with the continuous progress of aerodynamics, various fans are being developed to achieve higher efficiency, lower noise and higher acoustic quality by adopting more novel designs. However, when the backward centrifugal fan is used in the air purifier, the volute is not generally provided, but the backward centrifugal fan is directly placed in the casing of the air purifier, and the air volume at each position of the air outlet of the air purifier is easily uneven due to the influence of the air outlet direction, so that it is particularly necessary to provide a fan system capable of supercharging the outlet air and/or making the air volume even. In addition, the existing fan system is troublesome to assemble, resulting in low production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, provides a fan system convenient to dismouting, is favorable to improving production efficiency.

The utility model discloses the second technical problem that will solve is to prior art's current situation, provides a new fan that uses there is above-mentioned fan system.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a fan system, includes backward centrifugal fan, its characterized in that: still include the spiral case, this spiral case has preceding spiral case, the back spiral case that can lock each other, back centrifugal fan locates in the spiral case and the back shirks the formula and connects on the inner wall of back spiral case, it has the air intake, and is corresponding to open on the preceding spiral case, the front side of back centrifugal fan has the inlet scoop that corresponds this air intake and arrange, the synthetic air outlet is enclosed jointly to the top edge of preceding spiral case and the top edge of back spiral case.

Preferably, the backward centrifugal fan comprises a wind wheel and a motor, the front part of the motor is inserted into the wind wheel and connected with the wind wheel, the rear part of the motor is positioned at the rear side of the wind wheel, a slot for inserting the rear end of the motor is arranged on the inner wall of the rear volute, and the inner wall of the slot is arranged close to the outer peripheral wall of the motor in an assembled state. This structure is convenient for be connected the centrifugal fan behind with back spiral case.

In order to improve the connection stability, the rear end of the motor is provided with a first connection hole, correspondingly, the rear volute is provided with a second connection hole, and a screw penetrates through the first connection hole and the second connection hole to lock the motor on the rear volute.

Preferably, be provided with the protruding circle of arranging around first connecting hole periphery on the diapire in the slot, be provided with sealed the pad in this protruding circle, under the assembly completion state, protruding circle and sealed pad all support with the motor rear end. The structure has the effect of vibration reduction.

Preferably, the rear end of the motor is provided with a notch close to the edge, and correspondingly, the inner wall of the slot is provided with a limit column which can be matched with the notch to position the motor. When inserting the rear end of the backward centrifugal fan in the slot, carry out prepositioning through this structure, be convenient for make first connecting hole, second connecting hole align each other, realize blind dress, be favorable to improving assembly efficiency.

In each scheme, the edges of the front volute and the rear volute are locked and connected through a buckle and/or a screw. A first buckle is arranged at the edge of the front volute, and correspondingly, a second buckle matched and connected with the first buckle is arranged at the edge of the rear volute; and the front volute and the rear volute are correspondingly provided with connecting holes for screws to pass through so as to lock and connect the front volute and the rear volute. The first buckle and the second buckle are in a group, and at least one group is respectively arranged at two sides and the bottom of the volute; two groups of connecting holes are respectively arranged at the upper part and the bottom part of the volute; the front volute and the rear volute are positioned through the buckles, and then are locked and connected through the screws, so that the assembly is convenient, and the stability is good after the assembly.

The utility model provides an use new fan that has above-mentioned fan system, includes the casing, its characterized in that: the fan system is arranged in the shell, the volute side wall is close to the inner wall of the shell, and a sealing strip is further arranged between the volute side wall and the inner wall of the shell.

Preferably, the upper part of the front volute is provided with a partition plate which extends forwards to separate the upper part of the volute from an air duct below the upper part of the front volute, and the upper side of the partition plate is provided with an electric control box for controlling the fan system. The structure can prevent the damage of water vapor and the like in the air duct to the electric control box.

Compared with the prior art, the utility model has the advantages of: the utility model discloses be provided with preceding spiral case and back spiral case that can each other lock with the spiral case, after locate in the spiral case and the back shirks the formula and connect on the inner wall of back spiral case to centrifugal fan, during the assembly, earlier install after to centrifugal fan on the spiral case of back, will preceding spiral case and back spiral case pair and lock again, be convenient for carry out dismouting and later maintenance to centrifugal fan after to, be favorable to improving production efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a fan system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another angle;

FIG. 3 is an exploded view of FIG. 1;

fig. 4 is a schematic structural view of a backward centrifugal fan in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a new fan in an embodiment of the present invention (hiding the front side portion casing).

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, the fan system of the present embodiment includes a backward centrifugal fan 1 and a volute 2, the volute 2 has a front volute 21 and a rear volute 22 that can be fastened to each other, and the backward centrifugal fan 1 is disposed in the volute 2 and detachably connected to the inner wall of the rear volute 22. The front volute 21 is provided with an air inlet 211, correspondingly, the front side of the backward centrifugal fan 1 is provided with an air suction opening 11 arranged corresponding to the air inlet 211, and the top edge of the front volute 21 and the top edge of the rear volute 22 jointly enclose an air outlet 23.

As shown in fig. 3, the backward centrifugal fan 1 includes a wind wheel 12 and a motor 13, the front portion of the motor 13 is inserted into the wind wheel 12 and connected to the wind wheel 12, the rear portion of the motor 13 is located at the rear side of the wind wheel 12, a slot 221 into which the rear end of the motor 13 is inserted is provided on the inner wall of the rear volute 22, and in an assembled state, the inner wall of the slot 221 is arranged close to the outer peripheral wall of the motor 13. In order to improve the connection stability, the rear end of the motor 13 is provided with a first connection hole 131, correspondingly, the rear volute 22 is provided with a second connection hole 222, and the screw 3 passes through the first connection hole 131 and the second connection hole 222 to lock the motor 13 on the rear volute 22. The bottom wall in the slot 221 is provided with a convex ring 223 arranged around the periphery of the first connecting hole 131, a sealing gasket 224 is arranged in the convex ring 223, and in the assembly completion state, the convex ring 223 and the sealing gasket 224 are both abutted against the rear end of the motor 13, so that the structure has a vibration damping effect. The rear end of the motor 13 is provided with a notch 132 near the edge, and correspondingly, the inner wall of the slot 221 is provided with a limit post 225 which can be matched with the notch 132 to position the motor 13. When inserting the rear end of the backward centrifugal fan 1 into the slot 221, pre-positioning is performed through the structure, so that the first connecting hole 131 and the second connecting hole 222 are aligned with each other, blind assembly is realized, and assembly efficiency is improved.

The edges of the front volute 21 and the rear volute 22 are locked and connected through a buckle and a screw. A first buckle 212 is arranged at the edge of the front volute 21, and correspondingly, a second buckle 226 which is matched and connected with the first buckle 212 is arranged at the edge of the rear volute 22; the front volute 21 and the rear volute 22 are correspondingly provided with connecting holes 20 for screws to pass through so as to lock and connect the two. The first buckle 212 and the second buckle 226 are a group, and two sides and the bottom of the volute are respectively provided with a group; two groups of connecting holes 20 are respectively arranged at the upper part and the bottom part of the volute; the front volute 21 and the rear volute 22 are positioned through the buckles, and the front volute 21 and the rear volute 22 are locked and connected through the screws, so that the assembly is convenient, and the stability is good after the assembly.

When the fan system is assembled, the rear end of the motor 13 of the backward centrifugal fan 1 is inserted into the slot 221, the position of the motor 13 is positioned by the matching of the notch 132 and the limiting column 225, and the motor 13 is locked on the rear volute 22 by the screw 3 passing through the first connecting hole 131 and the second connecting hole 222; the front volute 21 and the rear volute 22 are aligned and positioned through the first buckle 212 and the second buckle 226, and then the front volute 21 and the rear volute 22 are locked through the connecting hole 20 by screws.

As shown in fig. 5, the new fan of this embodiment includes a housing 4, the fan system is disposed in the housing 4, and the sidewall of the volute 2 is close to the inner wall of the housing 4, and a sealing strip 5 is further disposed between the sidewall of the volute 2 and the inner wall of the housing 4. The upper part of the front volute casing 21 is provided with a partition plate 24 which extends forwards to separate the upper part of the volute casing 2 from an air duct 40 below the volute casing, and the upper side of the partition plate 24 is provided with an electric control box 6 for controlling a fan system.

The bottom wall of the shell 4 is provided with an air inlet port, the top wall is provided with an air outlet port 41, and the shell 4 is provided with a formaldehyde removing module 42 covering the air inlet port and a filtering module 43 covering the air outlet port 41.

Claims

1. A fan system, includes backward centrifugal fan (1), its characterized in that: still include spiral case (2), this spiral case (2) have preceding spiral case (21), back spiral case (22) that can lock each other, locate in spiral case (2) and the back shirks the formula and connect on the inner wall of back spiral case (2) backward centrifugal fan (1), it has air intake (211), corresponding to open on preceding spiral case (21), the front side of backward centrifugal fan (1) has aspiration entry (11) that correspond this air intake (211) and arrange, synthetic air outlet (23) are enclosed jointly to the top edge of preceding spiral case (21) and the top edge of back spiral case (22).

2. The fan system of claim 1, wherein: the backward centrifugal fan (1) comprises a wind wheel (12) and a motor (13), the front portion of the motor (13) is inserted into the wind wheel (12) and connected with the wind wheel (12), the rear portion of the motor (13) is located on the rear side of the wind wheel (12), a slot (221) is formed in the inner wall of the rear volute (22) in an inserted mode of the rear end of the motor (13), and under the condition that assembly is completed, the inner wall of the slot (221) is arranged close to the outer peripheral wall of the motor (13).

3. The fan system of claim 2, wherein: the rear end of the motor (13) is provided with a first connecting hole (131), correspondingly, the rear volute (22) is provided with a second connecting hole (222), and the screw (3) penetrates through the first connecting hole (131) and the second connecting hole (222) to lock the motor (13) on the rear volute (22).

4. The fan system of claim 3, wherein: be provided with protruding circle (223) around first connecting hole (131) peripheral arrangement on the diapire in slot (221), be provided with sealed pad (224) in this protruding circle (223), under the assembly completion state, protruding circle (223) all support with motor (13) rear end with sealed pad (224).

5. The fan system of claim 2, wherein: motor (13) rear end is being seted up breach (132) near the edge, and is corresponding, thereby be provided with on slot (221) inner wall and cooperate with this breach (132) and carry out spacing post (225) of location to motor (13) position.

6. The fan system of any of claims 1-5, wherein: the edges of the front volute (21) and the rear volute (22) are in locking connection through buckles and/or screws.

7. The fan system of claim 6, wherein: a first buckle (212) is arranged at the edge of the front volute (21), and correspondingly, a second buckle (226) which is matched and connected with the first buckle (212) is arranged at the edge of the rear volute (22); the front volute (21) and the rear volute (22) are correspondingly provided with connecting holes (20) for screws to pass through so as to lock and connect the front volute and the rear volute.

8. A new fan applying the fan system according to any one of claims 1 to 7, comprising a housing (4), wherein: the fan system is arranged in the shell (4), the side wall of the volute (2) is close to the inner wall of the shell (4), and a sealing strip (5) is further arranged between the side wall of the volute (2) and the inner wall of the shell (4).

9. The fresh air machine of claim 8, wherein: the upper part of the front volute (21) is provided with a partition plate (24) which extends forwards so as to separate the upper part of the volute (2) from an air duct (40) below the volute, and an electric control box (6) used for controlling a fan system is arranged on the upper side of the partition plate (24).