Internal buckling split type air pipe exhaust fan

Abstract

The utility model discloses an inner buckle split type air pipe exhaust fan which comprises a shell, an air pipe and a wind wheel, the shell is provided with a containing cavity which is communicated with the outside through a placing-in hole and a placing-out hole, the air pipe is provided with an inner pipe and an outer pipe, and the outer pipe extends out of the containing cavity from the placing-out hole and is provided with an outer abutting part which is annularly arranged outside the placing-out hole and abuts against the cavity wall of the containing cavity. The shell is detachably and fixedly connected with the outer pipe at the outer abutting part, and the inner pipe is contained in the containing cavity and communicated with the outer pipe through the outlet hole. According to the utility model, the air pipe is configured into the outer pipe and the inner pipe, the outer pipe extends out of the accommodating cavity from the outlet hole and is detachably and fixedly connected with the shell at the inner side of the outlet hole, and the outer pipe is arranged in the accommodating cavity from the inlet hole and is communicated with the outer pipe through the outlet hole, so that the air pipe and the shell are assembled quickly and simply; meanwhile, due to the fact that the outer pipe and the inner pipe are connected with the shell after being placed into the assembling cavity from the placing holes, compared with an externally-buckled split type air pipe, the internally-buckled split type structure does not need to be provided with a large installation hole in a ceiling, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to an exhaust fan, in particular to an internally buckled split duct exhaust fan. Background Art

[0002] An exhaust fan is a device for exchanging indoor and outdoor gases, including a housing, a duct and a wind wheel. The housing has a receiving cavity. The duct is integrally formed, with a part of it received in the receiving cavity and another part extending out of the housing. The housing is formed by stamping and bending sheet metal parts and then riveting (or spot welding). The housing cannot be unfolded (or disassembled) during the assembly process. Since the duct is integrally formed and part of it is received in the housing and part extends out of the housing, it is difficult to assemble the duct and the housing. Content of the Utility Model

[0003] The purpose of the utility model is to provide an internally buckled split duct exhaust fan to solve the problem that the duct of the existing exhaust fan is integrally formed, part of it is received in the housing and part extends out of the housing, resulting in great difficulty in assembling the duct and the housing.

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

[0005] The internally buckled split duct exhaust fan includes a housing, a duct and a wind wheel. The housing has a receiving cavity communicating with the outside through a placing hole and a discharging hole. The duct has an inner tube and an outer tube. The outer tube extends out of the receiving cavity from the discharging hole and has an outer abutting portion surrounding the discharging hole and abutting against the cavity wall of the receiving cavity. The housing is detachably and fixedly connected to the outer tube at the outer abutting portion. The inner tube is received in the receiving cavity and communicates with the outer tube through the discharging hole. The placing hole is for the inner tube and the outer tube to be placed into the receiving cavity. The wind wheel is received in the duct.

[0006] Further, one side of the housing on one of the two opposite sides of the discharging hole is provided with a slot for the outer abutting portion to be inserted, and the other side is provided with a first connecting hole. The outer abutting portion is provided with a second connecting hole opposite to the first connecting hole and a fastener extending from the second connecting hole into the first connecting hole.

[0007] Further, the slot and the first connecting hole are horizontally opposite. The housing is provided with a groove recess on one side of the discharging hole, which is recessed towards the receiving cavity to form the slot. The outer abutting portion is formed with a limiting groove that restricts the up and down movement of the groove recess when it is inserted and matched with the slot.

[0008] Further, the placing hole and the discharging hole are respectively arranged on two adjacent and perpendicular side surfaces of the housing.

[0009] Further, the outer abutting portion is made of an elastic material.

[0010] Further, the inner pipe has an inner abutting portion that is annularly provided outside the discharge hole and abuts against the outer abutting portion.

[0011] Further, the inner pipe is provided with connecting ears extending from the inner pipe to the wall of the accommodating cavity. The connecting ears are detachably and fixedly connected to the housing. There are a plurality of the connecting ears, and the plurality of connecting ears are respectively arranged on the left and right sides of the inner pipe.

[0012] Further, the inner pipe is provided with abutting portions that abut against the wall of the accommodating cavity. There are a plurality of the abutting portions, and the plurality of abutting portions are respectively arranged on the front and rear sides of the inner pipe.

[0013] Further, the wall of the accommodating cavity is provided with a stop portion that abuts against the abutting portion up and down to limit the inner pipe from moving away from the accommodating cavity.

[0014] The advantages of this technical solution are as follows: By configuring the air duct into an outer pipe and an inner pipe, the outer pipe extends out of the accommodating cavity from the discharge hole and is detachably and fixedly connected to the housing inside the discharge hole. The outer pipe is inserted into the accommodating cavity from the insertion hole and communicates with the outer pipe through the discharge hole. Since both the inner pipe and the outer pipe are connected to the housing after being inserted into the accommodating cavity from the insertion hole, the connection between the air duct and the housing is simple and fast. At the same time, compared with the externally split air duct, this internally split structure does not require a large installation hole to be opened on the ceiling, and the operation is convenient. Description of the Drawings

[0015] In order 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 drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] In order 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 the three-dimensional view of the internally split air duct exhaust fan disclosed in the embodiment;

[0018] Figure 2 is the exploded view of the internally split air duct exhaust fan disclosed in the embodiment;

[0019] Figure 3 is the cross-sectional view of the internally split air duct exhaust fan disclosed in the embodiment;

[0020] Figure 4 is Figure 3 the partial enlarged view at A in

[0021] Figure 5 is Figure 3Partial enlarged view at B in the [Chinese context];

[0022] Figure 6 is the three-dimensional view of the housing in the embodiment;

[0023] Figure 7 is the three-dimensional view of the outer tube in the embodiment. Detailed implementation manner

[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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: As Figure 1-7 shown, the internal split duct exhaust fan includes a housing 1, a duct 2 and a wind wheel. The housing 1 has a receiving cavity 103 that communicates with the outside through a placing hole 101 and a discharging hole 102. The duct 2 has an inner tube 201 and an outer tube 202. The outer tube 202 extends out of the receiving cavity 103 from the discharging hole 102 and has an outer abutting portion 203 that is annularly arranged outside the discharging hole 102 and abuts against the cavity wall of the receiving cavity 103. The housing 1 is detachably and fixedly connected to the outer tube 202 at the outer abutting portion 203. The inner tube 201 is received in the receiving cavity 103 and communicates with the outer tube 202 through the discharging hole 102. The placing hole 101 is for the inner tube 201 and the outer tube 202 to be placed into the receiving cavity 103, and the wind wheel is received in the duct 2.

[0026] When the internal split duct exhaust fan is installed on the ceiling, the steps are as follows: First, an installation hole for placing the housing 1 is opened on the ceiling. Then, the housing 1 is placed into the ceiling from the installation hole. Then, the outer tube 202 is placed into the receiving cavity 103 from the placing hole 101 and extends out of the receiving cavity 103 through the discharging hole 102, and is connected to the housing 1 on the inner side of the discharging hole 102 (the cavity wall of the receiving cavity 103). Finally, the inner tube 201 equipped with the wind wheel is placed into the receiving cavity 103 from the placing hole 101.

[0027] In summary, the present embodiment provides an internally split duct exhaust fan to solve the problem that the duct of the existing exhaust fan is integrally formed, with part of it accommodated inside the housing and part protruding outside the housing, making the assembly of the duct and the housing difficult. The main solution is to configure the duct 2 into an outer duct 202 and an inner duct 201. The outer duct 202 extends out of the accommodating cavity 103 through the outlet hole 102 and is detachably and fixedly connected to the housing 1 inside the outlet hole 102. The outer duct 202 is inserted into the accommodating cavity 103 through the inlet hole 101 and communicates with the outer duct 202 through the outlet hole 102. Since both the inner duct 201 and the outer duct 202 are inserted into the accommodating cavity 103 through the inlet hole 101 and then connected to the housing 1, the connection between the duct 2 and the housing 1 is simple and fast. At the same time, compared with the externally split duct, this internally split structure does not require a large installation hole to be opened on the ceiling (the externally split type requires a large installation hole to be opened on the ceiling for the housing and the outer duct provided outside the housing to be inserted into the ceiling, and the operation of opening a large assembly hole on the ceiling is complex), and the operation is convenient.

[0028] In an embodiment of the present invention, on one side of the housing 1 on opposite sides of the outlet hole 102, there is a slot 204 for inserting the outer abutting portion 203, and on the other side, there is a first connecting hole 205. On the outer abutting portion 203, there is a second connecting hole 206 opposite to the first connecting hole 205 and a fastener (not marked in the figure) extending from the second connecting hole 206 into the first connecting hole 205. The above setting realizes the detachable and fixed connection between the outer duct 202 and the housing 1 by providing a slot 204 on one side of the opposite sides of the outlet hole 102 and a first connecting hole 205 on the other side, so that when the outer abutting portion 203 abuts against the wall of the accommodating cavity 103, one side is in plug-in fit with the slot 204 and the other side is connected to the housing 1 through the fastener. The connection structure is simple and easy to implement.

[0029] In an embodiment of the present invention, the slot 204 and the first connecting hole 205 are opposite left and right. On one side of the housing 1 at the outlet hole 102, there is a groove recess 104 formed by recessing towards the accommodating cavity 103 to form the slot 204. On the outer abutting portion 203, there is a limiting groove 207 that limits the up and down movement of the groove recess 104 when it is in plug-in fit with the slot 204. The above setting makes the connection between the outer duct 202 and the housing 1 stable by providing a limiting groove 207 on the outer abutting portion 203 that limits the up and down movement of the groove recess 104 when the outer abutting portion 203 is in plug-in fit with the slot 204.

[0030] In an embodiment of the present invention, the inlet hole 101 and the outlet hole 102 are respectively provided on two adjacent and mutually perpendicular side surfaces of the housing 1. Since the inlet hole 101 and the outlet hole 102 are respectively provided on two adjacent and mutually perpendicular side surfaces of the housing 1, it is convenient for the outer duct 202 to be inserted into the accommodating cavity 103 through the inlet hole 101 and then extend out of the accommodating cavity 103 through the outlet hole 102.

[0031] In the embodiment of the present utility model, the outer abutting portion 203 is made of an elastic material. Since the outer abutting portion 203 is made of an elastic material, it is convenient for one side of the outer abutting portion 203 to be inserted into the slot 204 when it abuts against the wall of the accommodating cavity 103, thus completing the assembly.

[0032] In the embodiment of the present utility model, the inner tube 201 has an inner abutting portion 208 that is disposed around the outlet hole 102 and abuts against the outer abutting portion 203. Since the inner tube 201 has the inner abutting portion 208 that is disposed around the outlet hole 102 and abuts against the outer abutting portion 203, the airtightness at the connection between the outer tube 202 and the inner tube 201 is good.

[0033] In the embodiment of the present utility model, the inner tube 201 is provided with connecting ears 209 that extend from the inner tube 201 to the wall of the accommodating cavity 103. The connecting ears 209 are detachably and fixedly connected to the housing 1. There are a plurality of connecting ears 209, and the plurality of connecting ears 209 are respectively disposed on the left and right sides of the inner tube 201. The above setting realizes the connection between the inner tube 201 and the housing 1 by providing a plurality of connecting ears 209 on the left and right sides of the inner tube 201, and the connection structure is simple and easy to implement.

[0034] In the embodiment of the present utility model, the inner tube 201 is provided with abutting portions 210 that abut against the wall of the accommodating cavity 103. There are a plurality of abutting portions 210, and the plurality of abutting portions 210 are respectively disposed on the front and rear sides of the inner tube 201. The above setting restricts the inner tube 201 by the cooperation of the plurality of abutting portions 210 and the plurality of connecting ears 209 by providing the abutting portions 210 on the front and rear sides of the inner tube 201, so that the assembly of the inner tube 201 and the housing 1 is stable.

[0035] In the embodiment of the present utility model, the wall of the accommodating cavity 103 is provided with a stop portion 105 that abuts against the abutting portion 210 up and down to restrict the inner tube 201 from moving away from the accommodating cavity 103. Since the wall of the accommodating cavity 103 is provided with the stop portion 105 that abuts against the abutting portion 210 up and down to restrict the inner tube 201 from moving away from the accommodating cavity 103, the assembly of the inner tube 201 and the housing 1 is stable.

[0036] 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, and 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 "second" information, and similarly, the "second" information can also be called "first" information. In addition, the orientation or positional relationship indicated by terms such as "center of the circle", "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 should not be construed as a limitation to the present utility model.

[0037] As described above, one or more embodiments are provided in combination with specific contents, and it is not considered that the specific implementation of the present utility model is limited only to these descriptions. Any approximation, similarity to the method, structure, etc. of the present utility model, or several technical deductions or substitutions made under the premise of the concept of the present utility model should be regarded as the protection scope of the present utility model.

Claims

1. An inward-hinged split duct exhaust fan, comprising a housing, a duct and a wind wheel, characterized in that: The shell has a accommodating cavity connected to the outside through an insertion hole and an outlet hole, the air duct has an inner tube and an outer tube, the outer tube extends out of the accommodating cavity from the outlet hole and has an outer abutment portion arranged outside the outlet hole and abutting against the cavity wall of the accommodating cavity, the shell is detachably fixedly connected to the outer tube at the outer abutment portion, the inner tube is accommodated in the accommodating cavity and connected to the outer tube through the outlet hole, the insertion hole is for the inner tube and the outer tube to be placed in the accommodating cavity, and the wind wheel is accommodated in the air duct.

2. The inward-hinged split duct exhaust fan according to claim 1, characterized in that: The shell is provided with a slot for inserting the outer abutment on one of the two opposite sides of the placement hole, and a first connecting hole on the other side. The outer abutment is provided with a second connecting hole opposite to the first connecting hole and a fastener extending from the second connecting hole into the first connecting hole.

3. The inward-hinged split duct exhaust fan according to claim 2, characterized in that: The slot is opposite to the first connecting hole on the left and right, and the shell is provided with a groove recessed portion extending toward the accommodating cavity to form the slot on one side of the outlet hole, and a limiting groove is formed on the outer abutment portion to limit the upward and downward movement of the groove recessed portion when it is plugged into and matched with the slot.

4. The inward-hinged split duct exhaust fan according to claim 1, characterized in that: The insertion hole and the removal hole are respectively arranged on two adjacent and perpendicular side surfaces of the shell.

5. The inward-hinged split duct exhaust fan according to claim 1, characterized in that: The outer abutment portion is made of elastic material.

6. The inward-hinged split duct exhaust fan according to claim 1, characterized in that: The inner tube has an inner abutment portion which is arranged outside the outlet hole and abuts against the outer abutment portion.

7. The inward-hinged split duct exhaust fan according to claim 1, characterized in that: The inner tube is provided with a connecting ear extending from the inner tube to the wall of the accommodating cavity, and the connecting ear is detachably fixedly connected to the shell. There are a plurality of connecting ears, which are respectively arranged on the left and right sides of the inner tube.

8. The inward-hinged split duct exhaust fan according to claim 1, characterized in that: The inner tube is provided with a stopper portion which stops against the wall of the accommodating cavity. There are a plurality of the stopper portions, and the plurality of the stopper portions are arranged on the front and rear sides of the inner tube.

9. The inward-hinged split duct exhaust fan according to claim 8, characterized in that: The cavity wall of the accommodating cavity is provided with a stopper portion which abuts against the stopper portion up and down to limit the inner tube from moving away from the accommodating cavity.

Images