CN210738877U - Fan and respirator with same - Google Patents

Abstract

The utility model discloses a fan for breathing machine, the fan includes the casing, still be equipped with first impeller, motor projecting shaft and second impeller in the casing, first impeller, motor, second impeller pass through the motor projecting shaft is coaxial coupling in proper order, the casing is including dismantling the first casing and the second casing of connection, first casing with the centre of second casing is equipped with first air inlet and second air inlet respectively, first casing with the second casing is equipped with outside first gas outlet and the second gas outlet of adjacent of extending respectively at the same position of side. The utility model provides a pair of fan and have breathing machine of this fan effectively increases the flow and the pressure of fan, reduces generating heat and the noise of fan simultaneously.

Description

Fan and respirator with same

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to fan and have breathing machine of this fan.

Background

The household respirator is a device which can replace, control or change the normal physiological respiration of a person, increase the lung ventilation, improve the respiratory function, reduce the consumption of the respiratory function and save the heart reserve capacity. The household ventilator (or called non-invasive ventilator) continuously provides oxygen for the patient through a given pressure, so as to improve the oxygen deficiency problem of the patient during sleep. The household respirator is mainly used for treating sleep apnea syndrome, namely severe snoring and accompanied breath holding symptoms, and can also be used for treating the complication of the sleep apnea syndrome, improving the blood oxygen concentration of a user in sleep at night, treating hypoxemia and the like.

The fan is a core part of the respirator, the performance of the fan is closely related to the treatment effect of the respirator, the performance of the respirator is determined, and the design, the layout and the like of the impeller greatly influence the performance of the fan, such as heating, noise and the like.

At present, a fan of a household respirator generally adopts a single impeller design, when higher pressure is required for support, the rotating speed of the impeller required relatively speaking is higher, for example, when the pressure of 30cmH2O is required, more than 20000 rpm is required, the rotating speed of a motor and the rotating speed of the impeller are high, heating increase is inevitably caused, noise is larger, in addition, the maximum pressure and the flow which can be achieved are smaller, and the time for rising to the preset pressure is longer.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a fan and have breathing machine of this fan effectively increases the flow and the pressure of fan, reduces generating heat and the noise of fan simultaneously.

In order to achieve the purpose of the present invention, the present invention provides a blower for a respirator, the blower includes a housing, the housing further includes a first impeller, a motor protruding shaft and a second impeller, the first impeller, the motor and the second impeller are coaxially connected in sequence via the motor protruding shaft, the housing includes a first housing and a second housing, the first housing and the second housing are detachably connected, the middle of the first housing and the middle of the second housing are respectively provided with a first air inlet and a second air inlet, the first housing and the second housing are respectively provided with a first air outlet and a second air outlet at the same position of the side edge, the housing is internally provided with a first impeller 2 and a second impeller 5 which are coaxially connected, compared with a traditional single impeller, when the motor 3 rotates and works at the same rotation speed, the blower can provide higher pressure and larger flow, and when the same pressure as that of the single impeller is provided, the requirement on the rotating speed of the motor 3 is lower, and the requirement on the rotating speed of the motor is reduced, so that the heat productivity of the motor 3 and the noise generated by high-speed rotation are reduced, and the effects of reducing heat and reducing noise are realized.

Preferably, still be equipped with the motor casing of fixed motor in the casing, be equipped with the motor fixed orifices on the motor casing, the motor fixed orifices is used for fixed motor as the name implies to reduce vibrations and the noise of motor during operation.

Preferably, the motor casing is provided with a partition plate on a connection plane of the first casing and the second casing, the partition plate is used for dividing the inside of the casing into a first cavity for accommodating the first impeller and a second cavity for accommodating the second impeller, the partition plate locks high-pressure air flows generated by the first impeller and the second impeller in the first cavity and the second cavity respectively, and the high-pressure air flows cannot directly collide in the casing, so that pressure instability, energy loss and the like are caused.

Preferably, the partition plate has the same shape and size as the connecting surface of the first casing and the second casing.

Preferably, the outer peripheral edge of the partition plate is provided with a sealing structure for sealing connection with the first housing and the second housing, respectively.

Preferably, the first impeller and the second impeller are the same in shape and size and are manufactured by the same die, so that the manufacturing cost is saved, the torque of two ends of the motor is equal, the motor is protected, the pressure in the first cavity is close to that in the second cavity, and the service life of the whole fan is prolonged.

Preferably, the first impeller and the second impeller are symmetrically arranged about the partition plate, the partition plate is positioned in the middle of the motor, and the motor extension shaft is also symmetrical about the partition plate, so that when the motor rotates at a high speed, the torques generated at two ends of the motor are the same as much as possible, the motor extension shaft and the motor are protected, and the service life of the motor is prolonged.

Preferably, the first air outlet and the second air outlet are formed in the shape of a semicircle with the same size, and when the first shell and the second shell are connected together, the first air outlet and the second air outlet form a round hole, so that the round hole is beneficial to the subsequent connection of a round air outlet pipe, the uniform mixing of flow and pressure is ensured, and the wind noise and the pressure balance are reduced.

Preferably, a plurality of connecting seats protruding from the side edges of the first shell and the second shell are arranged for connecting the first shell and the second shell.

According to another aspect of the present invention, there is provided a ventilator, comprising any one of the above fans.

The beneficial effects of the utility model are embodied in: the utility model discloses a fan compares with traditional fan, has coaxial pivoted bilobed wheel, under the unchangeable circumstances of motor speed, effectively improves the pressure and the flow of fan, when realizing same pressure, can reduce motor speed simultaneously, reduces the noise that generates heat and produce, improves the speed of stepping up, enlarges pressure, the flow scope of breathing machine work, in addition the utility model discloses a fan compact structure, pressure stability effectively reduces the volume of breathing machine, improves the treatment of breathing machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.

Fig. 1 is a schematic structural diagram of the fan of the present invention.

Fig. 2 is a schematic perspective view of the fan of the present invention.

Fig. 3 is a schematic structural diagram of the first casing of the blower of the present invention.

Fig. 4 is a schematic structural diagram of a motor casing of the fan of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1-2, the utility model discloses a fan includes the casing, still is equipped with first impeller 2, motor 3, motor projecting shaft 31 and second impeller 5 in the casing, and first impeller 2, motor 3, second impeller 5 pass through motor projecting shaft 31 coaxial coupling in proper order, and the casing is including dismantling first casing 1 and the second casing 2 of connection, and the centre of first casing 1 and second casing 6 is equipped with first air inlet 11 and second air inlet 61 respectively, and first casing 1 and second casing 6 are equipped with outside first gas outlet 12 and the adjacent second gas outlet 62 of extension respectively at the same position of side.

In the above embodiment, the first impeller 2 and the second impeller 5 which are coaxially connected are arranged in the casing, compared with a traditional single impeller, when the motor 3 rotates and works at the same rotating speed, higher pressure and larger flow can be provided, and when the motor 3 provides the same pressure as the single impeller, the requirement on the rotating speed of the motor 3 is lower, the requirement on the rotating speed of the motor is reduced, so that the heat productivity of the motor 3 and the noise generated by high-speed rotation are reduced, and the effects of reducing heat and reducing noise are achieved.

The utility model discloses an in the embodiment, motor projecting shaft 31 is located motor 3's center pin direction to for both ends stretching out the mode, first impeller 2 and second impeller 5 are established on motor projecting shaft 31 about motor 3 symmetry and cover in addition, guarantee first impeller 2 and second impeller 5 with the same speed syntropy and rotate, thereby produce the same size air pressure and flow, the pressure stability that the fan produced.

As shown in fig. 4, in the embodiment of the present invention, the motor casing 4 for fixing the motor 3 is further disposed in the housing, the motor casing 4 is disposed on the periphery of the motor 3, for example, in the present embodiment, the motor 3 is cylindrical, the motor casing is also cylindrical, and a plurality of motor fixing holes 411 are disposed on the end face 41 corresponding to the end face of the motor 3, the motor fixing holes 411 are used for fixing the motor 3 as the name implies, so as to reduce the vibration and noise of the motor during operation, and a central hole 412 is further disposed on the end face 41 for placing the motor extension shaft 31.

Further, the motor casing 4 is provided with a partition plate 42 on a connection plane of the first casing 1 and the second casing 6, the inside of the casing is divided into a first cavity for accommodating the first impeller 2 and a second cavity for accommodating the second impeller 5, and the partition plate 42 locks high-pressure air flows generated by the first impeller 2 and the second impeller 5 in the first cavity and the second cavity respectively, so that direct collision cannot occur in the casing, and pressure instability, energy loss and the like are caused.

Further, first impeller 2 is the same with 5 shapes of second impeller, size, produces with same mould and makes, practices thrift manufacturing cost on the one hand, and on the other hand guarantees that motor both ends torque equals to the protection motor also makes the pressure in first cavity and the second cavity similar in addition, improves the whole life-span of fan.

Further, the shape and size of the partition plate 42 are the same as those of the connecting surface of the first casing 1 and the second casing 6, and in the present embodiment, the peripheral edge of the partition plate 42 is provided with a sealing structure, such as a spigot sealing structure, and the male spigot of the edge of the first casing 2 is engaged with the female spigot of the second casing 5.

Of course, in other embodiments, the female seam allowance may be disposed at the edge of the partition plate 42, the edges of the first casing 1 and the second casing 6 are provided with the male seam allowance, the first casing 1 and the second casing 6 are embedded into the partition plate 42, so as to ensure that the partition plate 42 is respectively and hermetically connected with the first casing 2 and the second casing 5, and meanwhile, the partition plate 42 is used as a part of the integral connection of the motor casing 4, so that the motor casing 4 is fixed by the fixed partition plate 42, thereby stabilizing the fan structure and prolonging the service life of the fan.

Further, the first impeller 2 and the second impeller 5 are symmetrical about the partition plate 42, the partition plate 42 is located in the middle of the motor 3, and the motor extension shaft 31 is also symmetrical about the partition plate, so that when the motor 3 rotates at a high speed, the torque generated at the two ends of the motor 3 is the same as much as possible, the motor extension shaft and the motor are protected, and the service life of the motor is prolonged.

As shown in fig. 3, the first gas outlet 11 and the second gas outlet (not shown) on the first casing 1 and the second casing 6 are set to be semicircular with the same size, so that when the first casing 1 and the second casing 6 are connected together, the first gas outlet 11 and the second gas outlet form a round hole, the round hole is favorable for the subsequent connection of a circular outlet pipe, and meanwhile, the uniform mixing of flow and pressure is ensured, the wind noise and the unstable pressure are reduced, and of course, in other embodiments, the first gas outlet and the second gas outlet are set to have other shapes, such as a positive direction, a triangle, etc., which can be easily thought by those skilled in the art, and the protection scope of the present invention also belongs to.

In the present embodiment, the first air outlet 11 and the second air outlet both extend along the tangential direction of the first casing 1 and the second casing 6, so as to reduce the impedance and loss to the air flow, and in other embodiments, the air outlet may be in other directions easily conceived by those skilled in the art, which is favorable for radial direction, forward direction, backward direction, etc., all belonging to the protection scope of the present invention.

Further, the side edges of the first shell 1 and the second shell 6 are provided with a plurality of protruding connecting seats for connecting the first shell and the second shell. As shown in fig. 3, the connecting seat 13 is provided with a connecting hole, and the connecting hole is inserted through a bolt, so as to fixedly connect the first housing 1 and the second housing 6, of course, in other embodiments of the present invention, the connecting mode of the first housing 1 and the second housing 6 is not limited thereto, for example, the detachable connecting mode such as a snap connection, a key connection, a pin connection, etc. all belong to the protection scope of the present invention.

According to another aspect of the present invention, the present invention also provides a ventilator, which includes any one of the above fans.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (10)

1. The utility model provides a fan for breathing machine, its characterized in that, the fan includes the casing, still be equipped with first impeller, motor projecting shaft and second impeller in the casing, first impeller, motor, second impeller pass through motor projecting shaft coaxial coupling in proper order, the casing is including dismantling the first casing and the second casing of connection, first casing with the centre of second casing is equipped with first air inlet and second air inlet respectively, first casing with the second casing is equipped with outside adjacent first gas outlet and the second gas outlet that extends respectively at the same position of side.

2. The fan as claimed in claim 1, wherein a motor casing for fixing the motor is further disposed in the casing, and a motor fixing hole is disposed on the motor casing.

3. The fan as claimed in claim 2, wherein the motor casing is provided with a partition plate on a connection plane of the first casing and the second casing to divide an inside of the casing into a first cavity accommodating the first impeller and a second cavity accommodating the second impeller.

4. The fan as claimed in claim 3, wherein the partition has a shape and a size identical to a shape and a size of a connection surface of the first housing and the second housing.

5. The fan as claimed in claim 4, wherein the partition is provided at a peripheral edge thereof with a sealing structure for sealing connection with the first casing and the second casing, respectively.

6. The fan of claim 5 wherein the first impeller and the second impeller are the same shape and size.

7. The fan of claim 6 wherein the first impeller and the second impeller are symmetrically disposed about the diaphragm.

8. The fan of claim 7 wherein the first air outlet and the second air outlet are arranged in a semi-circle of the same size.

9. The blower of claim 8, wherein the first housing and the second housing are provided with a plurality of protruding coupling seats on the sides thereof for coupling the first housing and the second housing.

10. A ventilator characterized in that it comprises a blower according to any one of claims 1-9.

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