Liquid medium flow channel flow control structure and water pump applying same

Abstract

The utility model discloses a liquid medium flow channel flow control structure and a water pump applying the same, and relates to the technical field of electronic water pumps and parts thereof, the liquid medium flow channel flow control structure at least comprises an electric valve body assembly, and the electric valve body assembly is configured at a flow control section of a liquid medium flow channel; when the electric valve body assembly is in a first working state, the controllable flow channel of the flow control section is opened, and a liquid medium can circulate from the normally open flow channel and the controllable flow channel; and when the electric valve body assembly is in the second working state, the controllable flow channel of the flow control section is cut off, and the liquid medium can circulate from the normally-open flow channel but cannot circulate from the controllable flow channel. The utility model mainly solves the problem of how to provide a reasonable and efficient flow control structure; according to the utility model, the liquid medium flow area of the flow control section can be conveniently changed, so that the flow of the liquid medium at the flow control section is controlled, and a reasonable and efficient flow control structure and a flow control method are provided for the water pump.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic water pumps and their components, specifically to a liquid medium flow channel flow control structure and a water pump using the same. Background Technology

[0002] Electric water pumps have high output efficiency and can achieve precise flow control. Therefore, they are widely used in household appliances, automobiles, and industrial equipment. For example, household appliances such as air conditioners, water-heated mattresses, and humidifiers are increasingly equipped with electric water pumps to achieve precise quantitative liquid circulation / discharge functions.

[0003] In some applications of electronic water pumps, it is necessary to control the output flow rate of the electronic water pump.

[0004] In the existing technology, electronic water pumps typically control the output flow rate by controlling the speed of their motor / rotor assembly, which in turn controls the speed of their impeller.

[0005] However, the above-mentioned output flow control method places high demands on the control performance, response performance, and feedback performance of the motor / rotor assembly and drive circuit board of the electronic water pump, which will obviously increase the material cost, R&D cost, and secondary debugging cost of the electronic water pump.

[0006] In conclusion, how to provide a reasonable and efficient flow control structure and flow control method for electronic water pumps has become one of the urgent problems to be solved. Utility Model Content

[0007] The purpose of this invention is to provide a liquid medium flow channel flow control structure and a water pump using the same, which can conveniently control the flow rate of the liquid medium.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a liquid medium flow channel flow control structure, applied in a liquid medium pipeline; a liquid medium flow channel is configured in the liquid medium pipeline, and at least a portion of the liquid medium flow channel is configured as a flow control section; the flow control section is configured with a normally open flow channel and a controllable flow channel; the liquid medium flow channel flow control structure includes at least an electric valve body assembly, which is configured in the flow control section of the liquid medium flow channel; when the electric valve body assembly is in a first working state, the controllable flow channel of the flow control section is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel; when the electric valve body assembly is in a second working state, the controllable flow channel of the flow control section is closed, and the liquid medium can flow from the normally open flow channel but cannot flow from the controllable flow channel.

[0009] In the above technical solution, the liquid medium flow channel flow control structure of this utility model further includes a flow control component; the flow control component is provided with a normally open inlet end, a controllable inlet end, and an outlet end; the flow control component is housed and fixed in the flow control section of the liquid medium flow channel, the normally open inlet end and the outlet end of the flow control component are interconnected to form the normally open flow channel, and the controllable inlet end and the outlet end of the flow control component are interconnected to form the controllable flow channel; when the electric valve body assembly is in the first working state, the controllable inlet end of the flow control component is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel; when the electric valve body assembly is in the second working state, the controllable inlet end of the flow control component is closed, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

[0010] In the above technical solution, the flow control component is an L-shaped tube; the controllable inlet end and the outlet end are the two ports of the flow control component, and the normally open inlet end is a through hole opened on the opposite side of the outlet end.

[0011] In the above technical solution, the electric valve body assembly is a diaphragm solenoid valve; a solenoid valve mounting seat connected to the flow control section of the liquid medium flow channel is provided at the liquid medium pipeline; the solenoid valve body of the electric valve body assembly is fixed at the solenoid valve mounting seat of the liquid medium pipeline, and the magnetic push rod and elastic diaphragm of the electric valve body assembly are both located in the flow control section of the liquid medium pipeline; when the electric valve body assembly is in the first working state, the magnetic push rod is in the retracted state, and the elastic diaphragm... When the flow control component is not in contact with the controllable inlet end, the controllable inlet end of the flow control component is opened, allowing the liquid medium to flow through the normally open flow channel and the controllable flow channel. When the electric valve body assembly is in the second working state, the magnetic push rod is in an extended state, and the elastic diaphragm is pushed out by the magnetic push rod to block the controllable inlet end of the flow control component, thus cutting off the controllable inlet end of the flow control component. The liquid medium can flow through the normally open flow channel, but cannot flow through the controllable flow channel.

[0012] A water pump comprising the aforementioned liquid medium flow channel flow control structure.

[0013] In the above technical solution, the liquid medium flow channel flow control structure is configured in the outlet pipe and / or inlet pipe of the water pump.

[0014] In the above technical solution, the liquid medium flow channel flow control structure is configured in the outlet pipe of the water pump, and the inlet pipe of the water pump is equipped with a flow sensor; or, the liquid medium flow channel flow control structure is configured in the inlet pipe of the water pump, and the outlet pipe of the water pump is equipped with a flow sensor.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In the liquid medium flow control structure and water pump of this utility model, when the electric valve assembly is in the first working state, the controllable flow channel of the flow control section is opened, allowing the liquid medium to flow through both the normally open and controllable flow channels. When the electric valve assembly is in the second working state, the controllable flow channel of the flow control section is closed, allowing the liquid medium to flow through the normally open flow channel but not through the controllable flow channel. By switching between different working states of the electric valve assembly, the controllable flow channel of the flow control section can be opened or closed, conveniently changing the liquid medium flow area in the flow control section, thereby controlling the flow rate of the liquid medium in the flow control section. This eliminates the need to control the speed of the pump's motor / rotor assembly, providing a reasonable and efficient flow control structure and method for the water pump. Attached Figure Description

[0016] Figure 1 This is a perspective view of the liquid medium flow channel flow control structure in this utility model.

[0017] Figure 2 This is an exploded view of the liquid medium flow channel flow control structure in this utility model.

[0018] Figure 3 This is one of the cross-sectional views of the liquid medium flow channel flow control structure in this utility model.

[0019] Figure 4 This is the second cross-sectional view of the liquid medium flow channel flow control structure in this utility model.

[0020] Figure 5 This is a perspective view of the water pump in this utility model.

[0021] Figure 6 This is an exploded view of the water pump in this utility model.

[0022] The attached figures are labeled as follows: 1. Liquid medium pipeline; 11. Liquid medium flow channel; 12. Flow control section; 13. Solenoid valve mounting base; 2. Electric valve body assembly; 21. Solenoid valve body; 22. Magnetic push rod; 23. Elastic diaphragm; 3. Flow control component; 31. Normally open inlet; 32. Controllable inlet; 33. Outlet; 10. Water pump; 101. Inlet pipe; 101a. Flow sensor; 102. Outlet pipe; 103. Pump cover; 104. Impeller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This embodiment provides a liquid medium flow control structure, which is applied to a liquid medium pipeline 1 to control the flow rate of the liquid medium in the liquid medium pipeline 1.

[0025] The liquid medium pipeline 1 is a pipeline that allows the flow of liquid media (such as water, coolant, cleaning fluid, gasoline, lubricating oil, and chemical agents), such as a plastic pipeline or a metal pipeline.

[0026] A liquid medium flow channel 11 is provided in the liquid medium pipeline 1, and at least a portion of the liquid medium flow channel 11 is configured as a flow control section 12.

[0027] The flow control section 12 is equipped with a normally open flow channel and a controllable flow channel. The normally open flow channel is a flow channel that is continuously open, while the controllable flow channel is a flow channel that can be selectively switched to an open state or a closed state.

[0028] The flow control structure of the liquid medium flow channel 11 includes at least an electric valve body assembly 2, which is configured at the flow control section 12 of the liquid medium flow channel 11.

[0029] Please see Figure 3 When the electric valve body assembly 2 is in the first working state, the controllable flow channel of the flow control section 12 is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel.

[0030] Please see Figure 4 When the electric valve body assembly 2 is in the second working state, the controllable flow channel of the flow control section 12 is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

[0031] Specifically, the liquid medium flow channel flow control structure of this embodiment further includes a flow control component 3; the flow control component 3 is provided with a normally open inlet end 31, a controllable inlet end 32, and an outlet end 33; the flow control component 3 is housed and fixed in the flow control section 12 of the liquid medium flow channel 11, the normally open inlet end 31 and the outlet end 33 of the flow control component 3 are interconnected to form a normally open flow channel, and the controllable inlet end 32 and the outlet end 33 of the flow control component 3 are interconnected to form a controllable flow channel; please refer to Figure 3 When the electric valve body assembly 2 is in its first operating state, the controllable inlet end 32 of the flow control component 3 is opened, allowing the liquid medium to flow through both the normally open flow channel and the controllable flow channel; please refer to Figure 4 When the electric valve body assembly 2 is in the second working state, the controllable liquid inlet end 32 of the flow control component 3 is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

[0032] More specifically, the flow control component 3 is an L-shaped tube. In this embodiment, the flow control component 3 is an L-shaped metal tube (e.g., made of stainless steel). The flow control component 3 is embedded in the flow control section 12 of the liquid medium flow channel 11 and is fixed to the inner wall of the flow control section 12 by a snap fastener. The controllable inlet end 32 and the outlet end 33 are the two ports of the flow control component 3 (the two ports are perpendicular to each other). The normally open inlet end 31 is a through hole opened on the opposite side of the outlet end 33. In this embodiment, the normally open inlet end 31 is configured as two through holes distributed vertically, and the diameters of the two through holes are not the same.

[0033] More specifically, the electric valve body assembly 2 is a diaphragm solenoid valve; please refer to [link to relevant documentation]. Figures 2-4 The electric valve body assembly 2 specifically includes a solenoid valve body 21 and an elastic diaphragm 23. The solenoid valve body 21 has a magnetic push rod 22. When the electric valve body assembly 2 is in the first working state (not energized), the magnetic push rod 22 is in a retracted state. At this time, the elastic diaphragm 23 retracts along with the magnetic push rod 22 under its own elastic force. When the electric valve body assembly 2 is in the second working state (energized), the magnetic push rod 22 is in an extended state. At this time, the elastic diaphragm 23 is pushed out by the magnetic push rod 22. A matching device is provided at the liquid medium pipeline 1. The solenoid valve mounting seat 13 is connected to the flow control section 12 of the liquid medium flow channel 11. In fact, the solenoid valve mounting seat 13 is integrally formed at the flow control section 12 of the liquid medium pipeline 1 and matches the shape of the solenoid valve body 21. The solenoid valve body 21 of the electric valve body assembly 2 is fixed to the solenoid valve mounting seat 13 of the liquid medium pipeline 1, specifically by screws. Furthermore, the magnetic push rod 22 and the elastic diaphragm 23 of the electric valve body assembly 2 are both located within the flow control section 12 of the liquid medium pipeline 1. Please refer to... Figure 3 When the electric valve body assembly 2 is in the first working state, the magnetic push rod 22 is in the retracted state, and the elastic diaphragm 23 is not in contact with the controllable inlet end 32 of the flow control component 3, so that the controllable inlet end 32 of the flow control component 3 is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel; please refer to Figure 4When the electric valve body assembly 2 is in the second working state, the magnetic push rod 22 is in the extended state, and the elastic diaphragm 23 is pushed out by the magnetic push rod 22 to block the controllable liquid inlet end 32 of the flow control component 3, so that the controllable liquid inlet end 32 of the flow control component 3 is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

[0034] In this embodiment, the liquid medium flow control structure allows liquid medium (such as water, coolant, cleaning fluid, gasoline, lubricating oil, and chemical agents) to flow through the liquid medium flow channel 11 of the liquid medium pipeline 1 during use; please refer to... Figure 3 When the solenoid valve body 21 of the electric valve body assembly 2 is not energized, and the electric valve body assembly 2 is in its first working state, the magnetic push rod 22 is in a retracted state, and the elastic diaphragm 23 is not in contact with the controllable inlet end 32 of the flow control component 3, thus opening the controllable inlet end 32 of the flow control component 3. The liquid medium can flow through both the normally open flow channel and the controllable flow channel. At this time, the liquid medium flow channel 11 allows a higher flow rate of liquid medium to pass through. Please refer to [link to relevant documentation]. Figure 4 When the solenoid valve body 21 of the electric valve body assembly 2 is energized, the electric valve body assembly 2 is in the second working state, the magnetic push rod 22 is in the extended state, the elastic diaphragm 23 is pushed out by the magnetic push rod 22 and blocks the controllable liquid inlet end 32 of the flow control component 3, so that the controllable liquid inlet end 32 of the flow control component 3 is cut off. The liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel. At this time, the liquid medium flow rate of the liquid medium flow channel 11 is low.

[0035] It is understandable that the solenoid valve body 21 can be energized or de-energized by a control circuit based on a microcontroller or embedded chip and equipped with a solenoid valve drive module, thereby controlling the electric valve body assembly 2 to switch between the first working state and the second working state; or, a programmable controller (i.e., PLC) or an industrial control computer can be used directly to control the solenoid valve body 21 to be energized or de-energized, thereby controlling the electric valve body assembly 2 to switch between the first working state and the second working state.

[0036] This embodiment also provides a liquid medium flow control method, applied to a liquid medium pipeline 1; a liquid medium flow channel 11 is disposed in the liquid medium pipeline 1, and at least a portion of the liquid medium flow channel 11 is configured as a flow control section 12; the flow control section 12 is configured with a normally open flow channel and a controllable flow channel.

[0037] The method includes:

[0038] An electric valve body assembly 2 is configured at the flow control section 12 of the liquid medium flow channel 11;

[0039] When the electric valve body assembly 2 is in the first working state, the controllable flow channel of the flow control section 12 is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel.

[0040] When the electric valve body assembly 2 is in the second working state, the controllable flow channel of the flow control section 12 is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

[0041] This embodiment also provides a water pump, which includes the above-described liquid medium flow channel flow control structure.

[0042] This embodiment uses an electronic water pump as a typical example to further illustrate the technical solution of this utility model.

[0043] Please see Figure 5 and Figure 6 In this embodiment, the water pump 10 is an electronic water pump, which includes at least a pump cover 103. The pump cover 103 is an integrally injection-molded cover made of engineering plastic material. The internal space of the pump cover 103 is the impeller chamber of the electronic water pump. An inlet pipe 101 and an outlet pipe 102 are respectively formed on the pump cover 103. The inlet pipe 101 and the outlet pipe 102 are integrally injection-molded on the pump cover 103 and connect the short tubular structure features of the inner and outer sides of the impeller chamber. In fact, the inlet pipe 101 and the outlet pipe 102 can both serve as the liquid medium pipeline 1 described in this embodiment.

[0044] In addition, the water pump 10 also includes an impeller 104, which is a wheel-shaped body with several blades. The impeller 104 is powered by the motor or rotor assembly of the electric water pump. When the impeller 104 rotates in the impeller chamber of the pump cover 103, a directional pressure difference is generated in the impeller chamber, thereby driving the liquid medium to flow in a directional manner (the liquid medium is drawn into the impeller chamber from the inlet pipe 101 and discharged from the outlet pipe 102).

[0045] The liquid medium flow control structure is configured in the outlet pipe 102 and / or inlet pipe 101 of the water pump 10.

[0046] Furthermore, the liquid medium flow channel flow control structure is configured in the outlet pipe 102 of the water pump 10, and the inlet pipe 101 of the water pump 10 is equipped with a flow sensor 101a; or, the liquid medium flow channel flow control structure is configured in the inlet pipe 101 of the water pump 10, and the outlet pipe 102 of the water pump 10 is equipped with a flow sensor 101a.

[0047] Specifically, in this embodiment, the liquid medium flow control structure is configured at the outlet pipe 102 of the water pump 10. That is, the outlet pipe 102 of the water pump 10 is the liquid medium pipeline 1 described in this embodiment. The liquid medium flow channel 11, the flow control section 12, and the solenoid valve mounting seat 13 are all integrally injection molded at the outlet pipe 102. Correspondingly, the inlet pipe 101 of the water pump 10 is equipped with a flow sensor 101a. The flow sensor 101a is a Hall effect flow sensor 101a, which is used to feed back the liquid medium flow rate at the inlet pipe 101 of the water pump 10 to the host computer.

[0048] In this embodiment, the liquid medium flow channel flow control structure, control method, and water pump using the same are described. When the electric valve body assembly 2 is in the first working state, the controllable flow channel of the flow control section 12 is opened, allowing the liquid medium to flow through both the normally open and controllable flow channels. When the electric valve body assembly 2 is in the second working state, the controllable flow channel of the flow control section 12 is closed, allowing the liquid medium to flow through the normally open channel but not through the controllable flow channel. By switching between different working states of the electric valve body assembly 2, the controllable flow channel of the flow control section 12 can be opened or closed, conveniently changing the liquid medium flow area of ​​the flow control section 12, thereby controlling the flow rate of the liquid medium in the flow control section 12. This eliminates the need to control the speed of the motor / rotor assembly of the water pump 10, providing a reasonable and efficient flow control structure and method for the water pump 10.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow control structure for a liquid medium channel, applied in a liquid medium pipeline; characterized in that, The liquid medium pipeline is provided with a liquid medium flow channel, and at least a portion of the liquid medium flow channel is configured as a flow control section. The flow control section is equipped with a normally open flow channel and a controllable flow channel; The liquid medium flow channel flow control structure includes at least an electric valve body assembly, which is disposed at the flow control section of the liquid medium flow channel. When the electric valve body assembly is in the first working state, the controllable flow channel of the flow control section is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel. When the electric valve body assembly is in the second working state, the controllable flow channel of the flow control section is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

2. The liquid medium flow channel flow control structure according to claim 1, characterized in that, It also includes flow control components; The flow control component is equipped with a normally open inlet end, a controllable inlet end, and an outlet end. The flow control component is housed and fixed in the flow control section of the liquid medium flow channel. The normally open inlet and outlet of the flow control component are interconnected to form the normally open flow channel, and the controllable inlet and outlet of the flow control component are interconnected to form the controllable flow channel. When the electric valve body assembly is in the first working state, the controllable liquid inlet end of the flow control component is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel. When the electric valve body assembly is in the second working state, the controllable inlet end of the flow control component is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

3. The liquid medium flow channel flow control structure according to claim 2, characterized in that, The flow control component is an L-shaped tube; The controllable inlet and the outlet are the two ports of the flow control component, and the normally open inlet is a through hole opened on the opposite side of the outlet.

4. The liquid medium flow channel flow control structure according to claim 2 or 3, characterized in that, The electric valve body assembly is a diaphragm solenoid valve. The liquid medium pipeline is equipped with a solenoid valve mounting base that is connected to the flow control section of the liquid medium flow channel. The solenoid valve body of the electric valve body assembly is fixed at the solenoid valve mounting seat of the liquid medium pipeline, and the magnetic push rod and elastic diaphragm of the electric valve body assembly are both located in the flow control section of the liquid medium pipeline. When the electric valve body assembly is in the first working state, the magnetic push rod is in the retracted state, the elastic diaphragm is not in contact with the controllable liquid inlet end of the flow control component, so that the controllable liquid inlet end of the flow control component is opened, and the liquid medium can flow from the normally open flow channel and the controllable flow channel. When the electric valve body assembly is in the second working state, the magnetic push rod is in the extended state, and the elastic diaphragm is pushed out by the magnetic push rod to block the controllable liquid inlet end of the flow control component, so that the controllable liquid inlet end of the flow control component is cut off, and the liquid medium can flow from the normally open flow channel, but cannot flow from the controllable flow channel.

5. A water pump, characterized in that, The liquid medium flow channel flow control structure includes any one of claims 1-4.

6. The water pump according to claim 5, characterized in that, The liquid medium flow channel flow control structure is configured in the outlet pipe and / or inlet pipe of the water pump.

7. The water pump according to claim 6, characterized in that, The liquid medium flow channel flow control structure is configured in the outlet pipe of the water pump, and the inlet pipe of the water pump is equipped with a flow sensor. Alternatively, the liquid medium flow channel flow control structure is configured in the inlet pipe of the water pump, and the outlet pipe of the water pump is equipped with a flow sensor.

Images