Air pump and bathtub applying same
By using multiple coaxial series impellers and motor connections in the air pump, combined with the design of multiple air chambers and air inlet runners, the existing air pump has large volume, high noise and difficulty in achieving high wind pressure, achieving efficient high wind pressure and low noise effects.
Patent Information
- Application Number
- CN202421738471.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-23
AI Technical Summary
Due to the single wind wheel design, existing air pumps are large in size, noise and are difficult to achieve high wind pressure while reducing noise.
At least two impellers connected in a coaxial series are connected to the motor, and an efficient air pressure system is formed through the design of multiple air chambers and air inlet runners, and noise is reduced through the sound insulation design of the outer and inner shells.
The effect of high wind pressure at smaller sizes is achieved, while reducing noise and improving the overall performance of the equipment.
Smart Images
Figure CN222977048U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fan, in particular to an air pump and a bathtub applying the same. Background Art
[0002] With the improvement of people's living standards, massage bathtubs have gradually become common bathroom facilities. At present, the massage bathtubs on the market mainly rely on bubble massage, and the main power for generating bubbles comes from a high-pressure air pump installed at the lower part of the bathtub. The existing air pump has a single impeller, and a high-power motor is used to provide kinetic energy to achieve high air pressure. To ensure high air pressure, a large power is selected for the fan, and the impeller has a large volume, resulting in a large overall design volume of the air pump. Moreover, in the actual state, the noise is relatively large when the air pump runs at high speed. Content of the Utility Model
[0003] The utility model aims to solve at least one of the above technical problems in the related art to some extent. For this purpose, the utility model provides an air pump.
[0004] To achieve the above object, the technical solution of the utility model is as follows:
[0005] The utility model also provides a bathtub with the above air pump.
[0006] The air pump according to the first aspect embodiment of the utility model includes:
[0007] A fan assembly, including a housing, an impeller and a motor. At least two of the impellers are connected to the motor in a coaxial series manner. The housing is provided with a first air inlet, an air outlet and a plurality of air cavities sequentially communicating between the first air inlet and the air outlet. Each of the impellers is placed in one of the air cavities in a one-to-one correspondence, and the first air inlet, the communication positions of the air cavities and the impellers are coaxially arranged;
[0008] An outer shell and an inner shell. The outer shell is sleeved on the inner shell, and an air inlet flow channel is formed between the circumferential inner wall of the outer shell and the circumferential outer wall of the inner shell. A second air inlet communicating with the air inlet flow channel is opened at the middle position of one end of the inner shell. The fan assembly is installed in the inner shell, and the first air inlet and the second air inlet are coaxially communicated.
[0009] The air pump according to the embodiment of the utility model has at least the following beneficial effects: Under the combined action of the series rotation of at least two impellers, the air pressure formed is much greater than that of a single impeller running independently. Therefore, the fan assembly can still achieve the high air pressure effect when the overall size is set to be relatively small; the overall noise is small during operation.
[0010] According to some embodiments of the present utility model, the outer shell and the inner shell are cylindrical. The outer shell has a first open end and a first closed end. An air inlet flow channel is formed at an interval between the inner wall of the outer shell and the outer wall of the inner shell. A third air inlet of the air inlet flow channel is formed at an interval between the first open end and the outer wall of the inner shell. The second air inlet is arranged at the end of the inner shell facing the first closed end and is opposite to the center of the first closed end.
[0011] According to some embodiments of the present utility model, the end face of the inner shell facing the first closed end and the first closed end are both arched and bulged outwards. A convex portion that is arched and protrudes towards the second air inlet is provided at the center of the first closed end.
[0012] According to some embodiments of the present utility model, the second air inlet extends from the end face of the inner shell towards the interior of the inner shell. The first air inlet extends towards the second air inlet. A first installation cavity is formed at an interval between the housing and the inner shell. A first sound insulation cotton is installed in the first installation cavity, and the first sound insulation cotton is arranged around the housing and the second air inlet.
[0013] According to some embodiments of the present utility model, a hollow first partition board is provided inside the second air inlet, and a second sound insulation cotton placed on the first partition board is installed in the second air inlet.
[0014] According to some embodiments of the present utility model, a second installation cavity is defined inside the inner shell, the fan assembly is installed in the second installation cavity, and a buffer pad is installed at the connection between the housing and the second installation cavity.
[0015] According to some embodiments of the present utility model, the impeller is a centrifugal supercharging air blade or a turbine air blade.
[0016] According to some embodiments of the present utility model, the air outlet is opened on the side wall of the housing, and the air outlet extends radially through the inner shell and the outer shell along the housing.
[0017] According to some embodiments of the present utility model, each of the air cavities is separated by a second partition board. An air passing hole is opened at the center of the second partition board, and the driving shaft of the motor passes through the air passing hole.
[0018] A bathtub according to the second aspect embodiments of the present utility model includes a water outlet flow channel and an air pump installed on the water outlet flow channel.
[0019] The bathtub according to the embodiments of the present utility model has at least the following beneficial effects: The application of the air pump can effectively increase the foaming degree of the water in the water outlet flow channel and enhance the massage experience of the user.
[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:
[0022] Figure 1 is a schematic structural diagram of a wind pump;
[0023] Figure 2 is a schematic exploded view of a partial structure of the wind pump;
[0024] Figure 3 is a schematic exploded view of the structure of the fan assembly;
[0025] Figure 4 is Figure 1 a schematic internal structure diagram of;
[0026] Figure 5 is Figure 4 a schematic diagram of the gas flow of.
[0027] Reference numerals: fan assembly 100; housing 110; first air inlet 111; air outlet 112; air cavity 113; second partition 114; air passing hole 115; impeller 120; motor 130; outer shell 200; first open end 201; first closed end 202; third air inlet 203; convex portion 204; inner shell 300; first installation cavity 301; second air inlet 310; first partition 311; second installation cavity 320; air inlet flow channel 400; first sound insulation cotton 500; second sound insulation cotton 600; buffer pad 700. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.
[0029] The present utility model relates to a wind pump, comprising a fan assembly 100, an outer shell 200 and an inner shell 300.
[0030] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, the fan assembly 100 includes a housing 110, an impeller 120, and a motor 130. The impeller 120 is installed inside the housing 110. The motor 130 can be installed inside the housing 110 or outside the housing 110. At least two impellers 120 are installed inside the housing 110. The number of impellers 120 can be two, three, or more. Each impeller 120 is connected to the motor 130 in a coaxial series manner. The housing 110 is provided with a first air inlet 111, an air outlet 112, and a plurality of air cavities 113. The number of air cavities 113 is the same as the number of impellers 120. In this embodiment, the motor 130 is located inside the housing 110, and the drive shaft of the motor 130 passes through two impellers 120 coaxially. The housing 110 is correspondingly provided with two air cavities 113. The two air cavities 113 are arranged in sequence and communicated between the first air inlet 111 and the air outlet 112. The communication positions of the first air inlet 111 and each air cavity 113 are on the same straight line. The drive shaft of the motor 130 passes through the communication positions of each air cavity 113, that is, each impeller 120 is coaxially arranged with the communication positions of the first air inlet 111 and each air cavity 113. Among them, preferably, the impeller 120 is a centrifugal supercharging fan or a turbine fan. The motor 130 is a brushless motor 130. The outer shell 200 is sleeved on the inner shell 300. There is a certain interval between the circumferential inner wall of the outer shell 200 and the circumferential outer wall of the inner shell 300, and an air inlet flow channel 400 is formed at the interval. A second air inlet 310 is opened at the middle position of one end of the inner shell 300, and the second air inlet 310 is communicated with the air inlet flow channel 400. The fan assembly 100 is installed in the inner shell 300. The first air inlet 111 and the second air inlet 310 are coaxially communicated.
[0031] During actual use, as Figure 5As shown, the motor 130 starts, driving each impeller 120 to rotate synchronously. Each impeller 120 forms a negative pressure in the corresponding air chamber 113. External air enters the intake air flow path 400 along the circumferential direction of the outer shell 200, and the air flow converges to the second air inlet 310 along the intake air flow path 400. The air flow flows from the second air inlet 310 to the first air inlet 111. The first air inlet 111 enters the first air chamber 113, and then the air flow flows to the next air chamber 113 from the connection between adjacent air chambers 113, and finally is discharged from the air outlet 112. With the cooperation of the intake air flow path 400 and the second air inlet 310, external air can be well converged and transported to the first air inlet 111, reducing the noise generated by the turbulence when the air enters the housing 110. Under the combined action of at least two impellers 120 rotating in series, the formed wind pressure is much greater than the wind pressure of a single wind wheel operating independently. Therefore, when the blower assembly 100 is integrally set to a smaller size, a high wind pressure effect can still be achieved. At the same time, the outer shell 200 and the inner shell 300 wrap the blower assembly 100, and the outer shell 200 and the inner shell 300 have a certain blocking effect on the noise generated during the operation of the blower assembly 100, achieving a noise reduction effect. Each impeller 120 guides the air flow corresponding to the air chamber 113, effectively reducing the flow-induced noise generated by air flow disorder, and reducing the noise from the noise source of the blower assembly 100.
[0032] The air pump can be applied to various devices that need to generate high-pressure wind energy, such as air ducts. The air pump of the present utility model is applied to a bathtub. The bathtub further includes a water outlet flow path, and the air pump is installed on the water outlet flow path. The water sprayed from the water outlet flow path has a massage effect. When the air pump starts, it transports external air into the water outlet flow path to form bubbles. The application of the air pump can effectively increase the degree of bubbling of the water in the water outlet flow path, enhancing the user's massage experience.
[0033] In some specific embodiments of the present utility model, such as Figure 1 , Figure 2 and Figure 4As shown, both the outer shell 200 and the inner shell 300 are cylindrical. The outer shell 200 has a first open end 201 and a first closed end 202. In the illustrated direction, the upper end of the outer shell 200 is closed to form the first closed end 202, and the lower end of the outer shell 200 is open to form the first open end 201. The second air inlet 310 is provided at the top of the inner shell 300. The outer shell 200 covers the inner shell 300 from top to bottom. Support columns can extend from the outer wall of the inner shell 300, and the outer shell 200 is fixed to the support columns. An air inlet flow channel 400 is formed between the inner wall of the outer shell 200 and the outer wall of the inner shell 300. A third air inlet 203 of the air inlet flow channel 400 is formed at an interval between the first open end 201 and the outer wall of the inner shell 300. The third air inlet 203 surrounds the inner shell 300. The first closed end 202 is located above the second air inlet 310. The second air inlet 310 is located at the center of the upper end face of the inner shell 300, and the center positions of the second air inlet 310 and the first closed end 202 are opposite to each other. When the fan assembly 100 is started, the outside air enters the air inlet flow channel 400 from the third air inlet 203, then converges towards the center of the first closed end 202 and is then conveyed to the second air inlet 310. The air intake is uniform and stable, reducing the occurrence of turbulence.
[0034] Furthermore, the end face of the inner shell 300 facing the first closed end 202 (i.e., the upper end face of the inner shell 300) bulges upward in an arc shape, and the first closed end 202 of the outer shell 200 also bulges in an arc shape. The shapes of the first closed end 202 and the upper end face of the inner shell 300 are adapted to each other. A convex portion 204 is provided at the center of the first closed end 202, and the convex portion 204 protrudes downward towards the second air inlet 310 in an arc shape. The shape matching of the upward arc-shaped bulges of the first closed end 202 and the upper end of the inner shell 300 causes the upper part of the air inlet flow channel 400 to change direction in an arc shape, which is beneficial for the air to smoothly change direction towards the second air inlet 310 when flowing along the air inlet flow channel 400, reducing the wind resistance. The ingenious setting of the convex portion 204 further improves the effect of gathering the fluid flowing to the center position of the first closed end 202 towards the second air inlet 310, making the gas flow more concentrated, reducing the generation of eddy currents, and being more conducive to the air flow entering the fan to do work, thereby reducing the frictional loss along the way.
[0035] In some embodiments of the present invention, such as Figure 4As shown in the figure, the second air inlet 310 extends downward from the upper end face of the inner shell 300 towards the inside of the inner shell 300. The second air inlet 310 can be in a cylindrical shape. The first air inlet 111 extends towards the second air inlet 310, and the first air inlet 111 can be in a cylindrical shape. The diameter of the first air inlet 111 can be set to be smaller than the diameter of the second air inlet 310. The first air inlet 111 extends upward into the lower part of the second air inlet 310. There is a certain gap between the housing 110 and the inner shell 300, and a first installation cavity 301 is formed at the gap. A first sound insulation cotton 500 is installed in the first installation cavity 301. The first sound insulation cotton 500 is arranged around the housing 110 and the second air inlet 310. The first sound insulation cotton 500 is used for circumferential sound absorption at the second air inlet 310 and the fan assembly 100, effectively reducing the outward transmission of noise.
[0036] Further, as Figure 4 shown in the figure, a hollow first partition 311 is provided inside the second air inlet 310. The first partition 311 can be arranged in a circular ring shape on the inner wall of the second air inlet 310. A second sound insulation cotton 600 is installed in the second air inlet 310, and the first partition 311 supports the second sound insulation cotton 600. The second sound insulation cotton 600 is used to further reduce the noise generated by the airflow flowing in the second air inlet 310.
[0037] In some specific embodiments of the present invention, as Figure 2 and Figure 4 shown in the figure, a second installation cavity 320 is defined inside the inner shell 300. The fan assembly 100 is installed in the second installation cavity 320. The inner shell 300 is formed by splicing an upper shell and a lower shell, and the connection between the upper shell and the lower shell is butt-jointed through a step. Except at the first air outlet 112, other positions of the inner shell 300 are sealed. The first air outlet 112 is located at the top of the inner shell 300, and the bottom of the inner shell 300 is fixed to the bottom of the second installation cavity 320. A buffer pad 700 is installed between the bottom of the inner shell 300 and the bottom of the second installation cavity 320. The buffer pad 700 can be made of materials such as silica gel. Then, the bottom of the inner shell 300 and the bottom of the second installation cavity 320 are fastened to each other by screws. The buffer pad 700 can reduce the transmission of the noise generated when the motor 130 operates outward through the inner shell 300, playing a role in noise reduction.
[0038] In some specific embodiments of the present invention, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown in the figure, the air outlet 112 is opened on the side wall of the housing 110, and the air outlet 112 is communicated with the lowermost air cavity 113. The air outlet 112 extends radially along the housing 110 and passes through the inner shell 300 and the outer shell 200 and is led out.
[0039] In some specific embodiments of the present utility model, such as Figure 4 shown, the wind cavities 113 are separated by the second partition 114. An air passing hole 115 is formed at the center of the second partition 114. The adjacent wind cavities 113 are communicated through the air passing hole 115. The driving shaft of the motor 130 passes through the air passing hole 115 and is connected to each impeller 120. The air passing hole 115 is coaxially located with the first air inlet 111 and the second air inlet 310.
[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 thus should not be construed as a limitation to the present utility model.
[0041] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0042] In the present utility model, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0043] In the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the top" and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the bottom" and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0044] In the description of this specification, the description referring to terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0045] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A wind pump, characterized in that: include: A fan assembly (100) comprises a casing (110), an impeller (120) and a motor (130), wherein at least two impellers (120) are coaxially connected in series with the motor (130), the casing (110) is provided with a first air inlet (111), an air outlet (112) and a plurality of air cavities (113) sequentially connected between the first air inlet (111) and the air outlet (112), each of the impellers (120) is matched with each other and arranged in the air cavity (113), and the connecting point between the first air inlet (111) and each of the air cavities (113) is coaxially arranged with the impeller (120); An outer shell (200) and an inner shell (300), the outer shell (200) being sleeved on the inner shell (300), an air inlet channel (400) being formed between a circumferential inner wall of the outer shell (200) and a circumferential outer wall of the inner shell (300), a second air inlet (310) being connected to the air inlet channel (400) being provided at a middle position of one end of the inner shell (300), the fan assembly (100) being installed in the inner shell (300), and the first air inlet (111) and the second air inlet (310) being coaxially connected.
2. The air pump according to claim 1, characterized in that: The outer shell (200) and the inner shell (300) are cylindrical, the outer shell (200) having a first open end (201) and a first closed end (202), the air inlet channel (400) is formed between the inner wall of the outer shell (200) and the outer wall of the inner shell (300), and the third air inlet (203) of the air inlet channel (400) is formed between the first open end (201) and the outer wall of the inner shell (300); the second air inlet (310) is arranged on the end of the inner shell (300) facing the first closed end (202) and opposite to the center of the first closed end (202).
3. The air pump according to claim 2, characterized in that: The end surface of the inner shell (300) facing the first closed end (202) and the first closed end (202) both bulge outward in a circular arc, and a protrusion (204) protruding in a circular arc towards the second air inlet (310) is provided at the center of the first closed end (202).
4. The air pump according to claim 1 or 2, characterized in that: The second air inlet (310) extends from the end surface of the inner shell (300) toward the interior of the inner shell (300), and the first air inlet (111) extends toward the second air inlet (310). A first installation cavity (301) is formed between the housing (110) and the inner shell (300), and a first sound insulation cotton (500) is installed in the first installation cavity (301). The first sound insulation cotton (500) is arranged around the housing (110) and the second air inlet (310).
5. The air pump according to claim 4, characterized in that: A hollow first partition plate (311) is provided inside the second air inlet (310), and a second sound insulation cotton (600) placed on the first partition plate (311) is installed in the second air inlet (310).
6. The air pump according to claim 1 or 2, characterized in that: A second installation cavity (320) is defined inside the inner shell (300), the fan assembly (100) is installed in the second installation cavity (320), and a buffer pad (700) is installed at the connection between the housing (110) and the second installation cavity (320).
7. The air pump according to claim 6, characterized in that: The impeller (120) is a centrifugal booster blade or a turbine blade.
8. The air pump according to claim 1, characterized in that: The air outlet (112) is opened on the side wall of the casing (110), and the air outlet (112) extends in the radial direction of the casing (110) through the inner casing (300) and the outer casing (200).
9. The air pump according to claim 1, characterized in that: The air cavities (113) are separated by a second partition plate (114), a wind hole (115) is provided at the center of the second partition plate (114), and a driving shaft of the motor (130) is passed through the wind hole (115).
10. A bathtub, characterized in that: The invention comprises a water outlet flow channel and a wind pump according to any one of claims 1 to 9 installed on the water outlet flow channel.