Fan shell of turbofan and turbofan

Abstract

The utility model provides a fan shell of a turbofan. The fan shell of the turbofan comprises an outer shell and an inner shell, a cavity in the inner shell is cylindrical, and an air outlet and a communicating port are formed in the two opposite ends of the inner shell correspondingly; an air inlet and a mounting port are respectively formed in two opposite ends of the outer shell; the end, provided with the communication opening, of the inner shell is installed in the cavity of the outer shell through the installation opening. The inner shell is communicated with the cavity of the outer shell through the communication port to form an airflow channel; the inner wall of the outer shell and the outer wall of the inner shell are provided with plane parts which abut against each other in the length direction. The utility model further provides a turbofan. The turbofan comprises the fan shell of the turbofan and a grip installed on the fan shell. Due to the arrangement of the plane part, the positioning and marking effects are achieved, the corresponding position relation between the inner shell body and the outer shell body can be visually seen, and therefore the installation time of the fan shell body of the turbofan is shortened; and the limiting effect is achieved, and rotation between the outer shell and the inner shell can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and in particular to a fan casing of a turbofan and a turbofan. Background Art

[0002] A fan is a household appliance that uses an electric motor to drive the blades to rotate to accelerate the circulation of air. It is mainly used to cool down and circulate air. It is widely used in homes, classrooms, offices, shops, hospitals, hotels and other places.

[0003] With the development of economy and technology, people's use of fans is no longer limited to larger household non-portable electric fans; in order to facilitate people to cool down at any time when going out and to facilitate people to carry when going out, handheld fans have appeared on the market to facilitate heat dissipation at any time.

[0004] The existing handheld fan usually mainly includes a fan housing, an air inlet cover, an air outlet cover, a fan assembly, etc. Through the high-speed operation of the fan assembly, a concentrated air flow is formed, which enters through the air inlet cover and is blown out through the air outlet cover, thereby achieving cooling and air circulation.

[0005] Among them, the fan casing is usually composed of two front and rear shells, which are installed and fixed by snap-fitting. However, the cross-section of the fan casing is usually set to be circular. During the installation of the two shells, relative rotation is likely to occur, resulting in low installation efficiency, and even product damage in severe cases. Utility Model Content

[0006] In view of the above problems existing in the prior art, the technical problem to be solved by the utility model is that the cross-section of the fan casing is usually set to be circular. During the installation of the two casings, relative rotation is likely to occur, resulting in low installation efficiency and even product damage in severe cases.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: a fan casing of a turbofan, comprising: an outer casing and an inner casing; the cavity in the inner casing is cylindrical, and an air outlet and a connecting port are respectively provided at opposite ends of the inner casing; an air inlet and a mounting port are respectively provided at opposite ends of the outer casing; one end of the inner casing provided with the connecting port is installed in the cavity of the outer casing through the mounting port; the inner casing is connected with the cavity of the outer casing through the connecting port to form an air flow channel; the inner wall of the outer casing and the outer wall of the inner casing are provided with planar portions abutting against each other in the length direction.

[0008] Preferably, the inner wall and outer wall of the outer shell have the same shape.

[0009] Preferably, a protrusion is provided on the edge of the inner shell away from the outer shell, and the protrusion has the same size and shape as the outer wall structure of the outer shell.

[0010] Preferably, a long groove extending toward the air outlet is formed at one end of the inner shell body close to the outer shell body.

[0011] Preferably, the width of the long groove at one end close to the air outlet gradually increases toward the other end.

[0012] Preferably, a connection port is provided on the outer shell near the long slot, so as to be connected to the outside through the connection port and the long slot, so as to be connected to the power supply through the cable to supply power to the motor driving the fan blades to rotate.

[0013] Preferably, a plurality of the planar portions are arranged at intervals on the inner wall of the outer shell.

[0014] Preferably, a porous barrier is installed at the air inlet.

[0015] A turbo fan, comprising:

[0016] A fan casing of a turbofan as described in any one of the above; and

[0017] A grip mounted on the outer shell.

[0018] Preferably, a connecting column is provided on the outer shell, and the connecting column is detachably connected to the outer shell.

[0019] Compared with the prior art, the utility model has at least the following advantages:

[0020] In the utility model, when the outer shell and the inner shell are installed with each other, the plane portion on the inner wall of the outer shell and the plane portion on the outer wall of the inner shell abut against each other, and the outer shell is sleeved on the inner shell, so as to realize the installation between the outer shell and the inner shell; and through the setting of the plane portion, a positioning and marking function is played, and the corresponding positional relationship between the inner shell and the outer shell can be intuitively seen, thereby shortening the installation time of the fan shell of the turbofan; and through the setting of the plane portion, a limiting function is played, which can effectively prevent relative rotation between the outer shell and the inner shell.

[0021] In the utility model, through the provision of the long groove, the inner shell can undergo a certain deformation, so that the inner shell becomes a truncated cone shape, so that the inner shell can be more conveniently installed in the outer shell; through the connecting port and the long groove, it can be connected to the outside, so that the power supply is connected through the cable to power the motor that drives the fan blades to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 A three-dimensional diagram of a turbofan provided in an embodiment of the present utility model.

[0024] Figure 2 An exploded view of a turbofan provided in an embodiment of the present utility model.

[0025] Figure 3 This is a three-dimensional diagram of an outer shell provided in an embodiment of the present utility model.

[0026] Figure 4 This is a three-dimensional diagram of the inner shell provided in the embodiment of the present utility model.

[0027] Figure numerals: 1 - outer shell, 2 - inner shell, 3 - air inlet, 4 - air outlet, 5 - plane part, 6 - protrusion, 7 - long groove, 8 - connection port, 9 - porous blocking member, 10 - handle, 11 - connection column. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0029] In the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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] See also Figure 1-Figure 4 The utility model provides an embodiment: a fan casing of a turbofan, comprising: an outer casing 1 and an inner casing 2; the cavity in the inner casing 2 is cylindrical, and an air outlet 4 and a connecting port are respectively provided at opposite ends of the inner casing 2; an air inlet 3 and a mounting port are respectively provided at opposite ends of the outer casing 1; one end of the inner casing 2 provided with the connecting port is installed in the cavity of the outer casing 1 through the mounting port; the inner casing 2 is connected with the cavity of the outer casing 1 through the connecting port to form an air flow channel; the inner wall of the outer casing 1 and the outer wall of the inner casing 2 are provided with planar portions 5 abutting against each other in the length direction.

[0032] When the outer shell 1 and the inner shell 2 are installed with each other, the plane portion 5 on the inner wall of the outer shell 1 and the plane portion 5 on the outer wall of the inner shell 2 abut against each other, and the outer shell 1 is sleeved on the inner shell 2, so as to realize the installation between the outer shell 1 and the inner shell 2; and the setting of the plane portion 5 plays a role of positioning and marking, and the corresponding positional relationship between the inner shell 2 and the outer shell 1 can be intuitively seen, thereby shortening the installation time of the fan shell of the turbofan; and the setting of the plane portion 5 plays a role of limiting, which can effectively prevent relative rotation between the outer shell 1 and the inner shell 2.

[0033] See also Figure 1-Figure 4 In other embodiments, the inner wall and the outer wall of the outer shell 1 have the same shape. In this way, the inner wall and the outer wall of the outer shell 1 are provided with the same flat surface 5 at the same position, so that the thickness of the outer shell 1 is the same at all positions, thereby effectively avoiding stress concentration and improving the strength of the outer shell 1.

[0034] See also Figure 1-Figure 4 In other embodiments, a protrusion 6 is provided on the edge of the inner shell 2 away from the outer shell 1, and the protrusion 6 has the same size and shape as the outer wall structure of the outer shell 1. When the outer shell 1 is sleeved on the inner shell 2, the outer shell 1 abuts against the protrusion 6 to limit the inner shell 2 and prevent the inner shell 2 from entering the outer shell 1; it can also be intuitively observed that the outer shell 1 and the inner shell 2 are installed in place.

[0035] See also Figure 1-Figure 4 In other embodiments, a long slot 7 extending toward the air outlet 4 is provided at one end of the inner shell 2 close to the outer shell 1; the inner shell 2 can be deformed to a certain extent by the provision of the long slot 7, so that the inner shell 2 becomes a truncated cone, thereby making it easier for the inner shell 2 to be installed in the outer shell 1. Furthermore, the width of the long slot 7 at one end close to the air outlet 4 gradually increases toward the other end; thereby making it easier for the outer shell 1 to be deformed.

[0036] See also Figure 1-Figure 4In other embodiments, a connection port 8 is provided on the outer shell 1 near the long slot 7; through the connection port 8 and the long slot 7, it can be connected to the outside, so that the power supply is connected through the cable to supply power to the motor that drives the fan blades to rotate.

[0037] See also Figure 1-Figure 4 In other embodiments, a plurality of plane portions 5 are provided at intervals on the inner wall of the outer shell 1, thereby more effectively preventing the outer shell 1 from rotating relative to the inner shell 2. Specifically, the plane portions 5 are provided on the upper side and on the left and right sides of the inner wall of the outer shell 1.

[0038] See also Figure 1-Figure 4 In other embodiments, a porous blocking member 9 is installed at the air inlet 3. By installing the porous blocking member 9 at the air inlet 3, it is possible to effectively prevent larger debris from entering the air flow channel.

[0039] See also Figure 1-Figure 4 The utility model provides an embodiment: a turbofan, comprising: a fan casing of the turbofan of any of the above embodiments and a handle 10 installed on an outer casing 1.

[0040] See also Figure 1-Figure 4 In other embodiments, the outer shell 1 is provided with a connecting column 11, and the connecting column 11 is detachably connected to the outer shell 1. In specific implementation, the handle 10 is connected to the outer shell 1 through the connecting column 11, and a plurality of connecting columns 11 are provided, and a connecting hole is opened. The handle 10 is installed on the outer shell 1 by screw threads and the connecting hole threads on the connecting column 11. In specific implementation, the handle 10 is installed on the side of the outer shell 1 away from the plane portion 5; thereby, the turbofan presents a symmetrical effect visually, which is more beautiful and natural, and is convenient for processing the outer shell 1. The turbofan can also be placed upside down by abutting the flat portion 5 against the platform.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A fan casing of a turbofan, characterized in that: include: An outer shell and an inner shell; the cavity in the inner shell is cylindrical, and the opposite ends of the inner shell are respectively provided with an air outlet and a connecting port; the opposite ends of the outer shell are respectively provided with an air inlet and a mounting port; the end of the inner shell provided with the connecting port is installed in the cavity of the outer shell through the mounting port; the inner shell is connected with the cavity of the outer shell through the connecting port to form an air flow channel; the inner wall of the outer shell and the outer wall of the inner shell are provided with planar portions abutting against each other in the length direction.

2. The fan casing of the turbofan according to claim 1, characterized in that: The inner wall and the outer wall of the outer shell have the same shape.

3. The fan housing of the turbofan according to claim 1, characterized in that: A protrusion is provided on the edge of the inner shell away from the outer shell, and the protrusion has the same size and shape as the outer wall structure of the outer shell.

4. The fan casing of the turbofan according to claim 1, characterized in that: An end of the inner shell body close to the outer shell body is provided with a long slot extending toward the air outlet.

5. The fan casing of the turbofan according to claim 4, characterized in that: The width of the long groove at one end close to the air outlet gradually increases toward the other end.

6. The fan casing of the turbofan according to claim 4, characterized in that: A connection opening is provided on the outer shell near the long slot.

7. The fan casing of the turbofan according to claim 1, characterized in that: A plurality of the planar portions are arranged at intervals on the inner wall of the outer shell.

8. The fan casing of the turbofan according to claim 1, characterized in that: A porous blocking member is installed at the air inlet.

9. A turbo fan, characterized in that: include: A fan casing of a turbofan as claimed in any one of claims 1 to 8; and A grip mounted on the outer shell.

10. The turbofan according to claim 9, characterized in that: The outer shell is provided with a connecting column, and the connecting column is detachably connected to the outer shell.

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