Cabinet type centrifugal ventilator

Abstract

The cabinet type centrifugal ventilator comprises an outer shell, an inner shell arranged in the outer shell and a wind wheel arranged in the inner shell, the inner shell is provided with a flow guide cavity, an inner air inlet hole, an inner air outlet hole, a flow guide piece and a side supporting piece, the inner air outlet hole is provided with an upper edge and a lower edge, and the flow guide piece extends from the upper edge to the lower edge in the circumferential direction of the inner air inlet hole to define a flow guide cavity. The side supporting piece extends outwards from the hole edge of the inner air inlet hole in the radial direction of the inner air inlet hole and is connected with the shell. According to the cabinet type centrifugal fan, the cabinet type centrifugal fan is provided with the outer shell, the inner shell and the wind wheel, the inner shell comprises the flow guide part and the side supporting part, the flow guide part extends from the upper edge to the lower edge in the circumferential direction of the inner air inlet hole to define the flow guide cavity, and the side supporting part extends outwards from the hole edge of the inner air inlet hole in the radial direction of the inner air inlet hole and is connected with the outer shell; the number of components forming the fan is small, the inner shell containing the wind wheel and connected with the outer shell is of an integrated structure, and therefore connecting structures between the components are effectively reduced, assembling is easy and fast, and noise is low.

Description

Technical Field

[0001] The utility model relates to a centrifugal fan, in particular to a cabinet centrifugal ventilator. Background Art

[0002] A centrifugal ventilator is a ventilation device used in public places such as hotels, restaurants, auditoriums, and cinemas. The existing centrifugal ventilator includes a housing, a mounting frame, a volute, and a wind wheel. The mounting frame is a frame structure. The mounting frame is connected inside the housing by bolts and nuts. The volute is connected to the mounting frame by bolts and nuts. The wind wheel is installed inside the volute and can rotate relative to the volute. Since the mounting frame adopts a frame structure, the mounting frame is connected inside the housing by bolts and nuts, and the volute is connected to the mounting frame by bolts and nuts, the assembly of the centrifugal ventilator is complex and cumbersome. Content of the Utility Model

[0003] The purpose of the utility model is to provide a cabinet centrifugal ventilator to solve the problem that in the existing centrifugal ventilator, the mounting frame adopts a frame structure, the mounting frame is connected inside the housing by bolts and nuts, and the volute is connected to the mounting frame by bolts and nuts, resulting in complex and cumbersome assembly.

[0004] The utility model is realized by the following technical solutions:

[0005] A cabinet centrifugal ventilator, including a housing, an inner housing, and a wind wheel. The housing has an assembly cavity, an external air inlet hole, and an external air outlet hole. The assembly cavity is communicated with the outside through the external air inlet hole and the external air outlet hole. The inner housing has a diversion cavity, an inner air inlet hole, an inner air outlet hole, a diversion member, and a side support member. The inner air outlet hole has an upper edge and a lower edge that are opposite up and down. The diversion member extends circumferentially along the inner air inlet hole from the upper edge to the lower edge to enclose the diversion cavity. The side support member extends outward from the inner air inlet hole edge in the radial direction of the inner air inlet hole and is connected to the housing. Both the inner air inlet hole and the side support member are two and correspond one by one. The two side support members are respectively arranged on the left and right sides of the diversion member. The side support member is spaced from the inner wall of the assembly cavity to form a flow passage. The flow passage is communicated with the diversion cavity through the inner air inlet hole and is communicated with the outside through the external air inlet hole. At least part of the inner air outlet hole is directly opposite to the external air outlet hole. The wind wheel is accommodated in the diversion cavity.

[0006] Further, the diversion member is welded to the side support member; or the diversion member and the side support member are integrally formed.

[0007] Further, the flow guide member is in the shape of a volute, and the flow guide member has a straight portion and an arc portion. The straight portion extends horizontally backward from the upper edge, and the arc portion extends circumferentially along the inner air inlet hole from the rear end of the straight portion to the lower edge. The arc portion is concentrically arranged with the inner air inlet hole, and the value range of the central angle corresponding to the arc portion is: 120° to 130°.

[0008] Further, a reinforcing member connected to the flow guide member and the outer shell is provided between the two side support members.

[0009] Further, the side support member is rectangular, and a flange is formed by turning the outer edge of the side support member away from the flow guide member. The side support member is detachably fixedly connected to the outer shell at the flange; and / or a handle hole is formed at one end of the side support member away from the inner air outlet hole, and the handle hole is triangular.

[0010] Further, a driving mechanism for driving the wind wheel to rotate is further included. The driving mechanism includes a motor provided on the outer wall of the outer shell and a driving shaft provided on the wind wheel. The driving shaft extends from one inner air inlet hole to the other inner air inlet hole and one end extends out of the outer shell and is connected to the motor. A support frame is provided on the side of the side support member facing away from the flow guide member, and a bearing seat rotatably connected to the driving shaft is provided on the support frame.

[0011] Further, the support frame is detachably fixedly connected to the side support member; and / or the support frame includes a cross bar and a vertical bar. The cross bar extends forward and backward and is connected to the side support member, and the vertical bar extends upward and downward and is respectively connected to the side support member and the cross bar. The bearing seat is provided on the cross bar; and / or a reinforcing frame is provided in the flow passage. The reinforcing frame has a cross eight-bar in a shape of an eight and a vertical eight-bar in a shape of an eight. The cross eight-bar is connected to the support frame, and the vertical eight-bars are respectively connected to the cross eight-bar and the outer shell.

[0012] Further, the wind wheel has a plurality of air guide vanes inclined in the same direction in its circumferential direction, and the distance between any two adjacent air guide vanes is not greater than 10 mm.

[0013] Further, the outer air inlet hole and the outer air outlet hole are opposite to each other front and back. The outer air inlet hole is at the rear, and the outer air outlet hole is at the front. The outer shell has a front fastener extending forward from the outer air outlet hole, and a front card slot extending circumferentially along the outer air outlet hole is formed on the outer wall of the front fastener; and / or the outer shell has a rear fastener extending backward from the outer air inlet hole, and a rear card slot extending circumferentially along the outer air inlet hole is formed on the outer wall of the rear fastener.

[0014] The advantages of this technical solution are as follows. The cabinet centrifugal ventilator is configured with a housing, an inner housing, and a wind wheel. The inner housing includes a guiding member that extends circumferentially along the inner air inlet hole from the upper edge to the lower edge to enclose a guiding cavity, and a side support member that extends outward from the edge of the inner air inlet hole in the radial direction of the inner air inlet hole and is connected to the housing. The wind wheel is accommodated inside the inner housing. The components of the fan are few, and the inner housing that accommodates the wind wheel and is connected to the housing adopts an integral structure. Therefore, the connection structure between components is effectively reduced, the assembly is simple and fast, and since the connection structure between components is reduced, the noise generated by the loosening of the connection structure is reduced. Also, since there are two side support members, and the two side support members are respectively arranged on the left and right sides of the guiding member, the overall structure of the fan is stable and the noise is small. Also, since there are two inner air inlet holes, the air volume of the fan is large and the air change / heat dissipation effect is good. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments.

[0017] Figure 1 is a three-dimensional view of the cabinet centrifugal ventilator disclosed in the embodiment Figure 1 ;

[0018] Figure 2 is a three-dimensional view of the cabinet centrifugal ventilator disclosed in the embodiment Figure 2 ;

[0019] Figure 3 is an assembled three-dimensional view of the inner housing and the wind wheel in the embodiment Figure 1 ;

[0020] Figure 4 is an assembled three-dimensional view of the inner housing and the wind wheel in the embodiment Figure 2 ;

[0021] Figure 5 is a cross-sectional view of the cabinet centrifugal ventilator disclosed in the embodiment;

[0022] Figure 6 is a partial exploded view of the cabinet centrifugal ventilator disclosed in the embodiment;

[0023] Figure 7 is a three-dimensional view of the inner housing in the embodiment. Detailed Implementation Modes

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: As Figures 1-7 shown, the cabinet centrifugal ventilator includes a housing 1, an inner housing 2 and a wind wheel 3. The housing 1 has an assembly cavity (not marked in the figure), an external air inlet hole 102 and an external air outlet hole 103. The assembly cavity is communicated with the outside through the external air inlet hole 102 and the external air outlet hole 103. The inner housing 2 has a guide cavity 201, an inner air inlet hole 202, an inner air outlet hole 203, a guide member 204 and a side support member 205. The inner air outlet hole 203 has an upper edge 206 and a lower edge 207 that are opposite up and down. The guide member 204 extends circumferentially along the inner air inlet hole 202 from the upper edge 206 to the lower edge 207 to enclose the guide cavity 201. The side support member 205 extends outward from the hole edge of the inner air inlet hole 202 in the radial direction of the inner air inlet hole 202 and is connected to the housing 1. Both the inner air inlet hole 202 and the side support member 205 are two and correspond one by one. The two side support members 205 are respectively arranged on the left and right sides of the guide member 204. The side support member 205 is spaced from the cavity wall of the assembly cavity to form a flow passage 4. The flow passage 4 is communicated with the guide cavity 201 through the inner air inlet hole 202 and is communicated with the outside through the external air inlet hole 102. At least a part of the inner air outlet hole 203 is directly opposite to the external air outlet hole 103. The wind wheel 3 is accommodated in the guide cavity 201 and can rotate relative to the inner housing 2.

[0026] This embodiment provides a cabinet centrifugal ventilator to solve the problems in the existing centrifugal ventilator. The mounting frame adopts a frame structure. The mounting frame is connected in the housing by bolts and nuts, and the volute is connected to the mounting frame by bolts and nuts. The assembly is complex and cumbersome. By configuring the cabinet centrifugal ventilator into a housing 1, an inner housing 2 and a wind wheel 3, the inner housing 2 includes a guide member 204 that extends circumferentially along the inner air inlet hole 202 from the upper edge 206 to the lower edge 207 to enclose the guide cavity 201 and a side support member 205 that extends outward from the hole edge of the inner air inlet hole 202 in the radial direction of the inner air inlet hole 202 and is connected to the housing 1. The wind wheel 3 is accommodated in the inner housing 2. The components of the fan are few, and the inner housing 2 that accommodates the wind wheel 3 and is connected to the housing 1 adopts an integral structure. Therefore, the connection structure between components is effectively reduced, the assembly is simple and fast, and since the connection structure between components is reduced, the noise generated by the loosening of the connection structure is reduced. Also, since there are 2 side support members 205 and the two side support members 205 are respectively arranged on the left and right sides of the guide member 204, the overall structure of the fan is stable and the noise is small. Also, since there are two inner air inlet holes 202, the air volume of the fan is large and the air change / heat dissipation effect is good.

[0027] In an embodiment of the present utility model, the flow guide member 204 is welded to the side support member 205 or the flow guide member 204 and the side support member 205 are integrally formed. Since the flow guide member 204 is welded to the side support member 205 or the flow guide member 204 and the side support member 205 are integrally formed, the connection between the flow guide member 204 and the side support member 205 is stable, and the structural stability of the inner shell 2 is good.

[0028] In an embodiment of the present utility model, the flow guide member 204 is in a volute shape. The flow guide member 204 has a straight portion 208 and an arc portion 209. The straight portion 208 extends horizontally backward from the upper edge 206, and the arc portion 209 extends circumferentially along the inner air inlet hole 202 from the rear end of the straight portion 208 to the lower edge 207. The arc portion 209 is concentric with the inner air inlet hole 202, and the value range of the central angle corresponding to the arc portion 209 is: 120° - 130°. The above setting configures the flow guide member 204 into a volute shape, and the value range of the central angle corresponding to the arc portion 209 is: 120° - 130°, so that the flow guide member 204 has a good flow guiding effect, with a large air volume and a fast wind speed.

[0029] In an embodiment of the present utility model, a reinforcing member 210 connected to the flow guide member 204 and the outer shell 1 respectively is provided between the two side support members 205. Specifically, the reinforcing member 210 is welded to the side support member 205 and the flow guide member 204 respectively. Since a reinforcing member 210 connected to the flow guide member 204 and the outer shell 1 respectively is provided between the two side support members 205, while the structure of the inner shell 2 is stabilized, the connection between the inner shell 2 and the outer shell 1 is also stabilized.

[0030] In an embodiment of the present utility model, the side support member 205 is rectangular. Since the side support member 205 is rectangular, the overall structure of the inner shell 2 is stable.

[0031] In an embodiment of the present utility model, the outer edge of the side support member 205 is turned over away from the flow guide member 204 to form a flanging 211, and the side support member 205 is detachably and fixedly connected to the outer shell 1 at the flanging 211. Specifically, the flanging 211 and the outer shell 1 are connected by bolts and nuts. Since the outer edge of the side support member 205 is turned over away from the flow guide member 204 to form a flanging 211, and the side support member 205 is detachably and fixedly connected to the outer shell 1 at the flanging 211, the connection between the inner shell 2 and the outer shell 1 is stable and the assembly is simple.

[0032] In an embodiment of the present utility model, a handle hole 212 is formed at one end of the side support member 205 away from the inner air outlet hole 203, and the handle hole 212 is triangular. The above setting facilitates the assembly and displacement of the inner shell 2 by providing a handle hole at one end of the side support member 205 away from the air outlet hole.

[0033] In an embodiment of the present utility model, it further includes a driving mechanism 5 for driving the wind wheel 3 to rotate. The driving mechanism 5 includes a motor 501 disposed on the outer wall of the housing 1 and a driving shaft 502 disposed on the wind wheel 3. The driving shaft 502 extends from one inner air inlet hole 202 to the other inner air inlet hole 202 and one end thereof extends out of the housing 1 and is connected to the motor 501. A support frame 213 is provided on the side of the side support member 205 facing away from the flow guiding member 204, and a bearing seat 214 rotatably connected to the driving shaft 502 is provided on the support frame 213. The above arrangement enables the two ends of the driving shaft 502 to be installed on one side of the inner air inlet hole 202 by configuring the support frame 213 on the side support member 205 and configuring the bearing seat 214 on the support frame 213, with simple assembly and good installation stability.

[0034] In an embodiment of the present utility model, a reinforcing frame 215 is provided in the flow-through channel 4. The reinforcing frame 215 has an eight-shaped horizontal eight-bar 216 and an eight-shaped vertical eight-bar 217. The horizontal eight-bar 216 is connected to the support frame 213, and the vertical eight-bars 217 are respectively connected to the horizontal eight-bar 216 and the housing 1. The above arrangement improves the assembly stability of the driving shaft 502 by providing a reinforcing frame 215 in the flow-through channel 4 that is respectively connected to the housing 1 and the support frame 213.

[0035] In an embodiment of the present utility model, the support frame 213 is detachably and fixedly connected to the side support member 205. Since the support frame 213 is detachably and fixedly connected to the side support member 205, it is convenient for the assembly of the driving shaft 502.

[0036] In an embodiment of the present utility model, the support frame 213 includes a cross bar 218 and a vertical bar 219. The cross bar 218 extends forward and backward and is connected to the side support member 205, and the vertical bar 219 extends up and down and is respectively connected to the side support member 205 and the cross bar 218. The bearing seat 214 is provided on the cross bar 218. Since the support frame 213 is in a T shape, it has a good support effect.

[0037] In an embodiment of the present utility model, the wind wheel 3 has a plurality of air guiding vanes 301 that are inclined in the same direction in its circumferential direction, and the distance between any two adjacent air guiding vanes 301 is not greater than 10 mm. Since the distance between any two adjacent air guiding vanes 301 is not greater than 10 mm, the wind wheel 3 has a good air extraction effect.

[0038] In the embodiment of the present utility model, the outer air inlet hole 102 and the outer air outlet hole 103 are opposite to each other front and back. The outer air inlet hole 102 is at the rear, and the outer air outlet hole 103 is at the front. The housing 1 has a front fastener 104 extending forward from the outer air outlet hole 103. The front fastener 104 forms a front clamping groove 105 extending along the circumferential direction of the outer air outlet hole 103 on its outer wall. The housing 1 has a rear fastener 106 extending backward from the outer air inlet hole 102. The rear fastener 106 forms a rear clamping groove 107 extending along the circumferential direction of the outer air inlet hole 102 on its outer wall. Among them, the housing 1 is connected to an external ventilation pipeline through the front fastener 104 and the rear fastener 106 arranged front and back to access the pipeline or form a series pipeline composed of multiple fans, which is flexible and convenient to use.

[0039] It should be understood that in the present utility model, terms such as "first" and "second" are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the "first" information can also be called the "second" information. Similarly, the "second" information can also be called the "first" information. In addition, the orientation or positional relationship indicated by terms such as "center of the circle", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0040] As described above, one or more implementation manners are provided in combination with specific contents, and it is not determined that the specific implementation of the present utility model is only limited to these descriptions. All those similar or identical to the method and structure of the present utility model, or those made by making several technical deductions or substitutions under the premise of the concept of the present utility model should be regarded as within the protection scope of the present utility model.

Claims

1. A cabinet-type centrifugal fan, comprising an outer shell, an inner shell and a wind wheel, characterized in that: The vents are connected to the air vents through the vents, and the vents are connected to the air vents through the vents. The vents are connected to the air vents through the vents. The vents are connected to the air vents through the vents. The vents are connected to the air vents through the vents.

2. The cabinet centrifugal fan according to claim 1, characterized in that: The flow guide member is welded to the side support member; or the flow guide member and the side support member are integrally formed.

3. The cabinet centrifugal fan according to claim 1, characterized in that: The guide member is in the shape of a volute, and has a straight portion and an arc portion. The straight portion extends horizontally backward from the upper edge, and the arc portion extends from the rear end of the straight portion along the circumference of the inner air inlet hole to the lower edge. The arc portion is concentrically arranged with the inner air inlet hole, and the value range of the central angle corresponding to the arc portion is: 120°~130°.

4. The cabinet type centrifugal fan according to claim 1, characterized in that: A reinforcing member connected to the flow guide member and the outer shell respectively is arranged between the two side support members.

5. The cabinet centrifugal fan according to claim 1, characterized in that: The side support member is rectangular, the outer edge of the side support member is folded in a direction away from the guide member to form a flange, and the side support member is detachably fixedly connected to the shell at the flange; And / or a handle hole is formed at one end of the side support member away from the inner air outlet, and the handle hole is triangular in shape.

6. The cabinet type centrifugal fan according to claim 1, characterized in that: It also includes a driving mechanism for driving the wind wheel to rotate, the driving mechanism includes a motor arranged on the outer wall of the shell and a driving shaft arranged on the wind wheel, the driving shaft extends from one of the inner air inlet holes to the other inner air inlet hole and one end extends out of the shell and is connected to the motor, and a support frame is provided on the side of the side support member facing away from the guide member, and a bearing seat is provided on the support frame to be rotatably connected to the driving shaft.

7. The cabinet type centrifugal fan according to claim 6, characterized in that: The support frame is detachably fixedly connected to the side support member; and / or the support frame includes a cross bar and a vertical bar, the cross bar extends forward and backward and is connected to the side support member, the vertical bar extends up and down and is respectively connected to the side support member and the cross bar, and the bearing seat is arranged on the cross bar; and / or a reinforcement frame is provided in the flow channel, the reinforcement frame has an eight-shaped horizontal eight-bar and an eight-shaped vertical eight-bar, the horizontal eight-bar is connected to the support frame, and the vertical eight-bar is respectively connected to the horizontal eight-bar and the outer shell.

8. The cabinet centrifugal fan according to claim 1, characterized in that: The wind wheel has a plurality of wind guide blades inclined in the same direction on its circumference, and the distance between any two adjacent wind guide blades is no more than 10 mm.

9. The cabinet type centrifugal fan according to claim 1, characterized in that: The outer air inlet and the outgoing air hole are opposite to each other front and back, the outer air inlet is at the rear, and the outgoing air hole is at the front, the housing has a front fastener extending forward from the outgoing air hole, and the front fastener has a front slot extending along the circumference of the outgoing air hole formed on its outer wall; And / or the housing has a rear fastener extending rearward from the outer air inlet hole, and the rear fastener has a rear slot formed on its outer wall extending along the circumference of the outer air inlet hole.

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