Turbofan and breathing machine

Abstract

The utility model discloses a turbofan and a breathing machine, the turbofan comprises a fan main body and at least one fan support, and one end face of the fan main body is provided with an axial air inlet; the fan support is arranged on the outer surface of the end face where the air inlet is located and protrudes out of the end face where the air inlet is located in the axial direction. The fan support is arranged on the side, provided with the air inlet, of the fan body, the fan support can guarantee that the gap between the air inlet of the fan and the mounting table top of the breathing machine is not changed, and therefore it is guaranteed that the performance of the breathing machine cannot be degraded due to the insufficient gap.

Description

Technical Field

[0001] The utility model relates to a turbine fan and a ventilator. Background Art

[0002] A ventilator is an extracorporeal respiratory gas source providing device for respiratory therapy or assisted ventilation. The turbine fan is one of the core components of the ventilator. The flow and pressure required by the ventilator come from the turbine fan. The pressure, flow and noise performance of the turbine fan are directly related to the performance of the ventilator. In order to reduce the noise transmission of the turbine fan and increase the heat dissipation of the motor, the turbine fan is generally installed upside down in the ventilator. In order not to affect the flow at the fan inlet, the fan inlet and the ventilator installation table must be kept at a certain distance. At present, there is a design that uses soft rubber injection molding to form a suspended bracket, which wraps the turbine fan and holds it suspended to maintain the necessary inlet distance. However, the soft rubber may age, and after long-term use, there is a risk of cracking and deformation, resulting in insufficient air inlet clearance, thereby affecting the external characteristics of the ventilator such as pressure, flow and noise. Utility Model Content

[0003] The purpose of the utility model is to provide a turbo blower and a ventilator to solve the technical problems mentioned in the above background technology.

[0004] The technical solution for achieving the purpose of the utility model is: a turbine fan, comprising a fan body and at least one fan bracket, wherein an axial air inlet is arranged on one end face of the fan body; the fan bracket is arranged on the outer surface of the end face where the air inlet is located, and the fan bracket protrudes axially from the end face where the air inlet is located.

[0005] Furthermore, the fan body includes a volute, an impeller and a motor, the air inlet is arranged on an end face of the volute, a tangential air outlet is provided on the side of the volute, the motor is installed at the bottom of the volute, and the impeller is arranged in the volute and fixedly connected to the output shaft of the motor.

[0006] Furthermore, there are 3 to 6 fan brackets, which are evenly arranged on the end surface of the volute along the circumferential direction.

[0007] Furthermore, the fan bracket and the volute are integrally injection molded.

[0008] Furthermore, the fan bracket is tubular, and ribs are arranged inside the fan bracket.

[0009] Furthermore, the rib is in a "Y" shape.

[0010] Furthermore, the height of the fan bracket is 0.5 to 2 times the radius of the air inlet.

[0011] A ventilator comprises a turbine blower.

[0012] By adopting the above technical solution, the utility model has the following beneficial effects:

[0013] (1) The utility model is provided with a fan bracket on one side of the fan body where the air inlet is provided. The fan bracket can ensure that the gap between the fan air inlet and the ventilator mounting table remains unchanged, thereby ensuring that the performance of the ventilator will not be degraded due to insufficient gap.

[0014] (2) The number of fan brackets of the utility model is selected between 3 and 6, with a minimum of 3 to ensure the stability of the support and a maximum of no more than 6 to ensure that the fan air intake flow is not affected.

[0015] (3) The fan bracket and the volute of the utility model are integrally injection molded, and the production process is simple.

[0016] (4) The fan support of the utility model is provided with ribs inside, which, when matched with corresponding pillars, can ensure that the position of the fan does not change.

[0017] (5) The height of the fan bracket of the utility model ensures the flow area of ​​the fan air inlet, thereby ensuring that the fan flow rate is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a side structural schematic diagram of the utility model.

[0021] The numbers in the accompanying drawings are: fan body 1, volute 1-1, impeller 1-2, fan bracket 2, rib 2-1, air inlet 3. DETAILED DESCRIPTION

[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the embodiments of the present utility model, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present utility model.

[0027] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the scope of protection of the utility model.

[0028] (Example 1)

[0029] See Figure 1-2 The turbine fan of this embodiment includes a fan body 1 and at least one fan bracket 2. An axial air inlet 3 is arranged on one end face of the fan body 1; the fan bracket 2 is arranged on the outer surface of the end face where the air inlet 3 is located, and the fan bracket 2 protrudes axially from the end face where the air inlet 3 is located.

[0030] Specifically, the fan body 1 includes a volute 1-1, an impeller 1-2 and a motor (not shown in the figure), an air inlet 3 is arranged on an end face of the volute 1-1, a tangential air outlet 4 is provided on the side of the volute 1-1, the motor is installed at the bottom of the volute 1-1, and the impeller 1-2 is arranged in the volute 1-1 and fixedly connected to the output shaft of the motor.

[0031] In this embodiment, 3-6 fan brackets 2 are provided, which are evenly arranged on the end surface of the volute 1-1 along the circumferential direction. The minimum number of fan brackets 2 is 3 to ensure the stability of the support, and the maximum number is no more than 6 to ensure that the fan intake flow is not affected.

[0032] The volute 1 - 1 comprises an upper cover and a lower cover, and the fan bracket 2 and the upper cover of the volute 1 - 1 are integrally injection-molded, and the production process is simple.

[0033] In this embodiment, the fan support 2 is tubular, and a rib 2-1 is provided inside the fan support 2. After the rib 2-1 cooperates with the corresponding pillar, the position of the fan can be ensured not to change. Of course, the shape of the fan support 2 does not necessarily have to be tubular, and it can also be square or other shapes. In this embodiment, the rib 2-1 is "Y"-shaped. In other embodiments, the shape of the rib 2-1 is not necessarily "Y"-shaped, and it can also be a straight line or other shapes.

[0034] The height of the fan bracket 2 is 0.5 to 2 times the radius of the air inlet 3. The height of the fan bracket 2 ensures the flow area of ​​the fan air inlet 3, thereby ensuring that the fan flow is not affected.

[0035] (Example 2)

[0036] The ventilator of this embodiment includes a turbine fan, and the fan bracket 2 separates the air inlet 3 from the mounting surface of the ventilator. The fan bracket 2 is arranged on the side of the fan body 1 where the air inlet 3 is arranged, and the fan bracket 2 can ensure that the gap between the fan air inlet 3 and the mounting surface of the ventilator remains unchanged, thereby ensuring that the performance of the ventilator will not be degraded due to insufficient gap.

[0037] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A turbo fan, characterized in that: The invention comprises a fan body (1) and at least one fan bracket (2), wherein an axial air inlet (3) is arranged on one end face of the fan body (1); the fan bracket (2) is arranged on the outer surface of the end face where the air inlet (3) is located, and the fan bracket (2) protrudes axially from the end face where the air inlet (3) is located.

2. A turbo blower according to claim 1, characterized in that: The fan body (1) comprises a volute (1-1), an impeller (1-2) and a motor; the air inlet (3) is arranged on an end face of the volute (1-1); a tangential air outlet (4) is arranged on the side of the volute (1-1); the motor is mounted on the bottom of the volute (1-1); the impeller (1-2) is arranged in the volute (1-1) and is fixedly connected to the output shaft of the motor.

3. A turbo blower according to claim 2, characterized in that: The fan brackets (2) are provided in a number of 3 to 6 and are evenly arranged on the end surface of the volute (1-1) along the circumferential direction.

4. A turbo blower according to claim 2, characterized in that: The fan bracket (2) and the volute (1-1) are integrally injection-molded.

5. A turbo blower according to claim 1, characterized in that: The fan support (2) is tubular, and ribs (2-1) are arranged inside the fan support (2).

6. A turbo blower according to claim 5, characterized in that: The rib (2-1) is in a "Y" shape.

7. A turbo blower according to claim 1, characterized in that: The height of the fan bracket (2) is 0.5 to 2 times the radius of the air inlet (3).

8. A ventilator, characterized in that: It comprises a turbo blower as claimed in any one of claims 1 to 7.

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