A water pump

Abstract

The present invention discloses a water pump, including a pump cover, an impeller and a motor for driving the impeller to rotate. The pump cover is provided with a water inlet pipe, a water outlet pipe and a first chamber for accommodating the impeller. The water inlet pipe, the water outlet pipe and the first chamber form a water flow channel. The pump cover is provided with an air inlet, and the air inlet is connected to the water flow channel in the direction of the water flow. A water pump of the present invention connects the water flow channel in the direction of the water flow by making the air inlet connect to the water flow channel in the direction of the water flow. Then, when the air in the air inlet meets the water flow in the water flow channel, the air flow direction is the same as the water flow direction or forms an acute angle, thereby reducing the cutting effect of the water flow on the air entering, reducing the resistance of the air entering, and increasing the oxygen content of the water body, especially the oxygen content of the water body under high flow rate conditions, thereby improving the massage and relaxation effects; and it can avoid using external power to promote air intake, save space, reduce costs, make water vapor control unified, and make the container structure such as bathtubs and foot baths more compact.

Description

Technical Field

[0001] The invention relates to fluid equipment, in particular to a water pump. Background Art

[0002] Existing bathtubs, footbaths and other bathroom equipment usually use water pumps to achieve water jet massage. In order to avoid fatigue caused by skin hypoxia during massage, a first ventilation pipe is provided at the water inlet pipe of the water pump, which introduces external air into the water inlet pipe to increase the oxygen content of the water in the container.

[0003] Usually, the first ventilation pipe can introduce outside air by relying on the negative pressure generated by the flow of water, or by relying on external power such as an air pump to pressurize the air.

[0004] For the convenience of manufacturing, the first ventilation pipe is vertically connected to the water inlet pipe, so that the air flow direction is perpendicular to the water flow direction, and the water flow will have a cutting effect on the air.

[0005] However, when the water flow speed is increased to increase the massage intensity, the cutting effect of the water flow on the air is enhanced, which hinders the entry of air, resulting in a low oxygen content in the water in the container. The human body is prone to fatigue due to lack of oxygen. Using external power to pressurize the air not only increases costs and energy consumption, but may also cause noise and asynchrony problems. Summary of the invention

[0006] The present invention aims to solve the above-mentioned technical problems and provide a water pump to reduce the cutting resistance of water flow to air, promote the entry of air, make the water in the container fully oxygenated, and improve the massage and relaxation effects.

[0007] The present invention is achieved through the following technical solutions:

[0008] A water pump comprises a pump cover, an impeller and a motor for driving the impeller to rotate. The pump cover is provided with a water inlet pipe, a water outlet pipe and a first chamber for accommodating the impeller. The water inlet pipe, the water outlet pipe and the first chamber form a water flow channel. The pump cover is provided with an air inlet duct, which is connected to the water flow channel in the direction of the water flow.

[0009] Preferably, the pump cover is provided with a first ventilation pipe for forming an air inlet passage, the first ventilation pipe is connected with the water inlet pipe, and the first ventilation pipe is parallel to or forms an acute angle with the water inlet pipe.

[0010] Preferably, the pump cover is provided with a first ventilation pipe for forming an air inlet duct, the first ventilation pipe is vertically connected to the water inlet pipe, a guide component is provided in the water inlet pipe, the guide component is provided with a guide cavity for making the air flow direction the same as or similar to the water flow direction, and the guide cavity is connected to the air inlet duct.

[0011] Preferably, the pump cover is provided with a first ventilation pipe for forming an air inlet passage, the water inlet pipe is provided with a curved section communicating with the first chamber, and the first ventilation pipe is connected to the curved section.

[0012] Furthermore, the axial direction of the first ventilation pipe is parallel to or coincides with the axial direction of the first chamber.

[0013] Furthermore, the first ventilation pipe is provided with a first opening connected to the water inlet pipe, the first chamber is provided with a water inlet hole connected to the water inlet pipe, and the first opening is arranged close to the water inlet hole.

[0014] Furthermore, the first chamber includes a first bottom wall, a water inlet hole is arranged on the first bottom wall, and a guide ring is arranged around the circumference of the water inlet hole.

[0015] Preferably, the pump cover is provided with a second ventilation pipe for forming an air inlet, the second ventilation pipe is connected with the water outlet pipe, the second ventilation pipe is provided with a second opening connected with the water outlet pipe, and the second opening is arranged along the water flow direction.

[0016] Preferably, a protective grid is provided in the water outlet pipe, and the protective grid is provided at the junction of the water outlet pipe and the first chamber.

[0017] Furthermore, the pump cover is provided with a second ventilation pipe for forming an air inlet, and the second ventilation pipe is provided with a second opening portion connected to the water outlet pipe, and the second opening portion is arranged close to the protective grid.

[0018] The beneficial effect is: compared with the prior art, a water pump of the present invention connects the air inlet to the water flow channel in the direction of the water flow, and then, when the air in the air inlet meets the water flow in the water flow channel, the air flow direction is the same as the water flow direction or is at an acute angle, thereby reducing the cutting effect of the water flow on the entry of air, reducing the resistance of air entering the water flow channel, increasing the inflow of air, and increasing the oxygen content of the water in the container, especially the oxygen content of the water under high flow rate conditions, thereby improving the massage and relaxation effects; and, it can avoid the use of external power to promote air intake, save space, reduce costs, make water vapor control unified, and make the structure of containers such as bathtubs and foot baths more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments are briefly described below.

[0020] Obviously, the described drawings are only part of the embodiments of the present invention, rather than all the embodiments. Those skilled in the art can also obtain other design schemes and drawings based on these drawings without making any creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a water pump of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of another embodiment of the middle pump cover;

[0023] Figure 3 for Figure 2 A schematic diagram of another embodiment of the guide member;

[0024] Figure 4 for Figure 1 Schematic diagram of the water outlet pipe. DETAILED DESCRIPTION

[0025] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, characteristics and effects of the present invention.

[0026] Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work all fall within the protection scope of the present invention.

[0027] In addition, all the connection relationships mentioned in the text do not only refer to direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined interchangeably without conflicting with each other.

[0028] like Figure 1 As shown, a water pump comprises a pump cover 1, an impeller 2 and a motor 3 for driving the impeller 2 to rotate. The pump cover 1 is provided with a water inlet pipe 41, a water outlet pipe 43 and a first chamber 42 for accommodating the impeller 2. The water inlet pipe 41, the water outlet pipe 43 and the first chamber 42 form a water flow channel 4. The pump cover 1 is provided with an air inlet 5 for introducing outside air into the water flow channel 4, thereby enriching the water with oxygen. The air inlet 5 is formed by a vent pipe on the pump cover 1.

[0029] In the water pump industry, the vent pipe is vertically connected to the water inlet pipe 41, which is conducive to the integral molding of the pump cover 1 and reduces the manufacturing cost and difficulty.

[0030] At the same time, when the air and water flow meet, the flow direction of the air is perpendicular to the flow direction of the water flow. The water flow will have a cutting effect on the air, hindering the entry of air.

[0031] In order to increase the intensity of massage, users usually increase the actual power of the water pump, that is, increase the pressure and flow rate of the water flow. This leads to an increase in the cutting effect of the water flow on the air, hindering the entry of air and causing low oxygen content in the water body. The human body will easily become tired after a few minutes of high-intensity massage.

[0032] In order to solve the problem of low oxygen content in water under high flow conditions, external power is usually used, such as a micro air compressor.

[0033] However, using external power to promote the entry of air into the water pump will not only greatly increase the cost of the bathtub and footbath, but also take up space, making the bathtub and footbath large and not compact in structure. Moreover, the external power will generate noise when pressing the air into the water pump, affecting the user's comfort during massage and giving the user a poor user experience.

[0034] In order to solve the above problems, the existing water pump is improved so that the air inlet 5 is connected to the water flow channel 4 in the direction of the water flow.

[0035] The air inlet 5 is connected to the water flow channel 4 in the direction of the water flow, which means that at the junction of the air inlet 5 and the water flow channel 4, the flow direction of the air is exactly the same as the flow direction of the water flow, or is partially the same as the flow direction of the water flow, or is at an acute angle.

[0036] In this embodiment, the air inlet 5 is connected to the water flow channel 4 in the direction of the water flow. Then, when the air in the air inlet 5 meets the water flow in the water flow channel 4, the air flow direction is the same as the water flow direction or forms an acute angle, thereby reducing the cutting effect of the water flow on the entry of air, reducing the resistance of the air entering the water flow channel 4, increasing the inflow of air, and increasing the oxygen content of the water in the container, especially the oxygen content of the water under high flow rate conditions, thereby improving the massage and relaxation effects; and, it can avoid the use of external power to promote air intake, save space, reduce costs, make water vapor control unified, and make the structure of containers such as bathtubs and foot baths more compact.

[0037] To achieve the above relative state of the air flow direction and the water flow direction, the following embodiments may be used:

[0038] Embodiment 1: The pump cover 1 is provided with a first ventilation pipe 51 for forming an air inlet duct 5 . The first ventilation pipe 51 is communicated with the water inlet pipe 41 . The first ventilation pipe 51 is parallel to or forms an acute angle with the water inlet pipe 41 .

[0039] The acute angle between the first ventilation pipe 51 and the water inlet pipe 41 is easy to understand and will not be described in detail.

[0040] The first ventilation pipe 51 is parallel to the water inlet pipe 41 , and the water inlet pipe 41 may be a step pipe or a tapered pipe. The cross-sectional area of ​​the water inlet pipe 41 increases in the direction approaching the first chamber 42 . The first ventilation pipe 51 is connected to the water inlet pipe 41 in parallel with the axis of the water inlet pipe 41 .

[0041] For the convenience of manufacturing, the water inlet pipe 41 and the first ventilation pipe 51 may be manufactured first, and then the water inlet pipe 41 and the first chamber 42 may be connected together.

[0042] Of course, the first ventilation pipe 51 may also be manufactured as a connecting piece for connecting the water inlet pipe 41 with the first chamber 42 .

[0043] Embodiment 2: Figure 2 As shown, the large arrow is the direction of water flow. As an alternative to embodiment 1, a guide component 412 can be provided in the water inlet pipe 41. The guide component 412 is provided with a guide cavity 413 for making the air flow direction the same as or similar to the water flow direction. The guide cavity 413 is connected to the air inlet duct 5.

[0044] This allows the first ventilation pipe 51 to be vertically connected to the water inlet pipe 41 without increasing the difficulty of manufacturing, the increased cost is relatively low, and it is conducive to upgrading old water pumps and facilitating their popularization.

[0045] The guide member 412 and the water inlet pipe 41 can be fixed in a threaded connection or a clamping connection. The connection position can utilize the inner surface of the water inlet pipe 41, the outer surface of the first chamber 42, or the inner surface of the first ventilation pipe 51.

[0046] The guide member 412 is formed integrally with the pump cover 1 as much as possible, so as to reduce the number of parts. Figure 3 shown.

[0047] Embodiment 3: Figure 1 As shown, as an alternative to embodiment one and embodiment two, in order to enable the air inlet 5 to be connected to the water flow channel 4 in the direction of the water flow and at the same time reduce the manufacturing difficulty, the water inlet pipe 41 can be provided with a curved section 411 connected to the first chamber 42, and the first ventilation pipe 51 is connected to the curved section 411.

[0048] That is to say, the first ventilation pipe 51 can be formed in the forming direction of the first chamber 42 without increasing the manufacturing difficulty. Moreover, it can also reduce the height of the water pump protruding from the bathtub and other containers, reduce the volume of the bathtub, and reduce the bumps on the water pump.

[0049] As a further development of the third embodiment, the axial direction of the first ventilation pipe 51 can be parallel to or coincide with the axial direction of the first chamber 42, that is, it is easy to manufacture and makes the air flow direction and the water flow direction closer to the same.

[0050] As a further development of the third embodiment, the first ventilation pipe 51 may be provided with a first opening 511 connected to the water inlet pipe 41 , the first chamber 42 may be provided with a water inlet hole 421 connected to the water inlet pipe 41 , and the first opening 511 may be provided close to the water inlet hole 421 .

[0051] Since the cross-sectional area of ​​the water inlet hole 421 is usually smaller than that of the water inlet pipe 41, the water flow velocity at the water inlet hole 421 is increased. When the water flow does not produce a cutting effect on the air or the cutting effect is small, the negative pressure at the water inlet hole 421 is large, which is conducive to introducing more air.

[0052] As a further development of the third embodiment, the first chamber 42 includes a first bottom wall, the water inlet hole 421 is arranged on the first bottom wall, and a guide ring 422 is arranged around the circumference of the water inlet hole 421 .

[0053] The guide ring 422 guides water and air to the impeller 2, and the air is cut into small bubbles, which is conducive to the air being retained in the water body for a long time. In addition, the guide ring 422 can also reduce the influence of water backflow. The water backflow is caused by the water hitting the wall of the first chamber 42 after passing through the impeller 2 and backwashing to the water inlet 421.

[0054] Embodiment 4: Figure 4 As shown, the large arrow indicates the direction of water flow. As an alternative to embodiments one to three, the pump cover 1 may be provided with a second vent pipe 52 for forming the air inlet 5. The second vent pipe 52 is connected to the water outlet pipe 43. The second vent pipe 52 is provided with a second opening 521 connected to the water outlet pipe 43. The second opening 521 is provided along the direction of water flow.

[0055] The second opening 521 is arranged along the flow direction of the water flow, and the second ventilation pipe 52 and the water outlet pipe 43 may be in parallel, and the second ventilation pipe 52 and the water outlet pipe 43 may be directly connected.

[0056] The second mouth 521 is arranged along the direction of water flow, and the second ventilation pipe 52 and the water outlet pipe 43 can also be in a vertical state. The air inlet 5 includes two sections, one section is the inner side of the second ventilation pipe 52, and the other section is arranged in the water outlet pipe 43 and the channel part parallel to the water outlet pipe 43. This part can be set with reference to the guide component 412 of Example 2.

[0057] Since the water flow direction of the water outlet pipe 43 is the same as the demoulding direction during manufacturing, the second opening 521 of the second ventilation pipe 52 can be integrally formed with the water outlet pipe 43 to reduce manufacturing costs.

[0058] As for other details of the water outlet pipe 43, a protective grid may be provided inside the water outlet pipe 43. The protective grid is provided at the junction of the water outlet pipe 43 and the first chamber 42, which can prevent fingers from touching the impeller 2 and facilitate the formation of the protective grid.

[0059] To promote the mixing of air and water, the second mouth 521 is arranged close to the protective grid, so that the protective grid blocks the air or water flow, forming a local vortex, which is convenient for the mixing of air and water flow, and enables the air introduced from the outlet pipe 43 to remain in the water body for a long time.

[0060] The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments can be combined with each other to form new embodiments. The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Any modification or equivalent replacement that does not deviate from the spirit and scope of the present invention should be included in the scope of the technical solutions of the present invention.

Claims

1. A water pump, comprising a pump cover (1), an impeller (2) and a motor (3) for driving the impeller (2) to rotate, the pump cover (1) being provided with a water inlet pipe (41), a water outlet pipe (43) and a first chamber (42) for accommodating the impeller (2), the water inlet pipe (41), the water outlet pipe (43) and the first chamber (42) forming a water flow channel (4), characterized in that: The pump cover (1) is provided with an air inlet (5), and the air inlet (5) is connected to the water flow channel (4) in the direction of the water flow. The pump cover (1) is provided with a first ventilation pipe (51) for forming an air inlet passage (5), the first ventilation pipe (51) being in communication with a water inlet pipe (41), the pump cover (1) is provided with a second ventilation pipe (52) for forming an air inlet passage (5), the second ventilation pipe (52) being in communication with a water outlet pipe (43), the water inlet pipe (41) being provided with a curved section (411) in communication with the first chamber (42), the first ventilation pipe (51) being connected to the curved section (411), the axial direction of the first ventilation pipe (51) being parallel to or coincident with the axial direction of the first chamber (42), the first ventilation pipe (51) being provided with a second ventilation pipe (52) in communication with the water inlet pipe (41), A mouth (511), the first chamber (42) is provided with a water inlet hole (421) connected to the water inlet pipe (41), the first mouth (511) is arranged close to the water inlet hole (421), the first chamber (42) comprises a first bottom wall, the water inlet hole (421) is arranged on the first bottom wall, a guide ring (422) is arranged around the circumference of the water inlet hole (421), the second vent pipe (52) is provided with a second mouth (521) connected to the water outlet pipe (43), the second mouth (521) is arranged along the flow direction of water, a protective grille is arranged in the water outlet pipe (43), and the protective grille is arranged at the junction of the water outlet pipe (43) and the first chamber (42).

Images