A gas-liquid pump for household appliances and a household appliance

Abstract

The application provides a kind of household appliance gas-liquid pump and household appliance, belong to the technical field of household appliance, the gas-liquid pump includes pump body, impeller and motor, pump body is provided with pump cavity and shunt cavity, impeller is driven by motor and rotationally arranged in pump cavity, shunt cavity is provided with partition plate, and is divided into import cavity and export cavity, import cavity is connected with import pipe, export cavity is connected with export pipe, pump cavity and import cavity and export cavity are respectively provided with suction inlet and discharge outlet, the flux of suction inlet gradually increases along the rotation direction of impeller, to form negative pressure air suction, the flux of discharge outlet gradually decreases along the rotation direction of impeller, to form high pressure exhaust.The gas-liquid pump in the utility model has the function of self-suction, and the arrangement of the pump is not limited, which can realize the simultaneous suction of gas and liquid, realize the mixed transport of gas and liquid, reduce the volume of the appliance, and reduce the cost, volume, noise and vibration of the household appliance.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a household appliance gas-liquid pump and a household appliance. Background Technology

[0002] In household appliances with gas-liquid delivery pipelines, such as washing machines, dishwashers, robot vacuum cleaners, and water heaters, pumps are the core components. They are mainly responsible for gas-liquid delivery tasks such as water supply and sewage discharge, and their performance directly affects the performance and stability of the appliances.

[0003] In the current technology, most household appliance pumps for water intake and drainage adopt centrifugal pump structure. These pumps do not have self-priming function and need to be placed in a water tank or below the water surface. Moreover, there must be no air in the pump chamber during operation, which greatly limits the installation location and application range of the pump. In addition, the vacuum pumps currently available for electrical use are not suitable for sucking water media containing certain particles and dirt. If water intake, drainage, air intake, and air exhaust are to be achieved, a separate system needs to be designed. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a gas-liquid pump for household appliances and a household appliance.

[0005] The technical solution adopted by this utility model is as follows: In the first aspect, this application provides a gas-liquid pump for household appliances, including a pump body, an impeller, and a motor. The pump body is provided with a pump chamber and a flow divider chamber. The impeller is driven by the motor and rotates within the pump chamber. A partition plate is provided within the flow divider chamber, dividing it into an inlet chamber and an outlet chamber. The inlet chamber is connected to an inlet pipe, and the outlet chamber is connected to an outlet pipe. An inlet and an outlet are respectively provided between the pump chamber and the inlet and outlet chambers. The flow rate of the inlet gradually increases along the impeller rotation direction to form negative pressure suction, and the flow rate of the outlet gradually decreases along the impeller rotation direction to form high pressure exhaust.

[0006] In some embodiments, the flow divider is disposed between the motor and the pump chamber, and the output shaft of the motor passes through the flow divider and extends into the pump chamber and is directly connected to the impeller.

[0007] In some embodiments, a mounting cavity is provided within the diversion cavity, the output shaft of the motor passes through the mounting cavity, and a seal is provided between the motor and the mounting cavity.

[0008] In some embodiments, the motor includes a positioning ring disposed on the outer periphery of its output shaft, the positioning ring being embedded in the mounting cavity to form a positioning fit, and a sealing cover being pressed between the positioning ring and the seal, the seal being pressed against the mounting cavity by the sealing cover.

[0009] In some embodiments, the seal is a skeleton seal, which includes an inner lip and an outer skeleton, with a gap between them for the inner lip to move. The outer peripheral surface of the outer skeleton abuts against the inner wall of the mounting cavity to form a static seal, and the inner ring of the inner lip abuts against the outer peripheral surface of the motor output shaft to form a dynamic seal.

[0010] In some embodiments, the pump body includes a pump casing, a flow divider casing, and a pump cover, the pump cover, the pump casing, and the flow divider casing being connected in sequence by bolts, the pump cavity being formed between the pump casing and the pump cover, the flow divider cavity being formed between the pump casing and the flow divider casing, and the suction port and discharge port being opened on the end face of the pump casing near the flow divider casing.

[0011] In some embodiments, a first sealing ring is provided between the pump housing and the pump cover, and a second sealing ring is provided between the flow divider housing and the pump housing.

[0012] In some embodiments, the flow divider housing includes a sealing abutment end, and the pump housing is provided with a sealing groove adapted to the sealing abutment end on the end face near the flow divider housing. The second sealing ring is a non-circular sealing ring adapted to the sealing abutment end. The sealing abutment end presses the non-circular sealing ring into the sealing groove, thereby forming a non-communicating inlet and outlet chamber in the flow divider cavity.

[0013] In some embodiments, a flow channel is formed between the impeller and the inner wall of the pump chamber, and the flux change of the flow channel is consistent with the flux change of the impeller rotation direction and the inlet and outlet.

[0014] Secondly, this application also provides a household appliance, including a gas-liquid delivery pipeline, wherein the gas-liquid delivery pipeline is equipped with the gas-liquid pump of the household appliance.

[0015] The beneficial effects of this utility model are as follows: The gas-liquid pump in this utility model has a rapid self-priming function, which meets the need for immediate suction and discharge. At the same time, the arrangement of the pump is not restricted, and it can realize simultaneous suction of gas and liquid, realize gas-liquid mixed transport, reduce the size of electrical appliances, reduce the cost, size, noise and vibration of household appliances, and improve the quality of products. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a schematic diagram of a gas-liquid transfer pump for household appliances according to this utility model; Figure 2 This is a cross-sectional view of a household appliance gas-liquid transfer pump according to the present invention. Figure 1 ; Figure 3 This is a cross-sectional view of a household appliance gas-liquid transfer pump according to the present invention. Figure 2 ; Figure 4 This is an exploded view of a gas-liquid transfer pump for a household appliance according to this utility model; Figure 5 This is a partial cross-sectional view of a household appliance gas-liquid transfer pump according to the present invention; Figure 6 This is a cross-sectional view of a household appliance gas-liquid transfer pump according to the present invention. Figure 3 ; Figure 7 This is a cross-sectional view of a household appliance gas-liquid transfer pump according to the present invention. Figure 4 ; Figure 8 A flowchart illustrating the wastewater drainage system of a traditional automatic water-cooling robotic vacuum cleaner. Figure 9 A flowchart illustrating the wastewater discharge system of a traditional water tank-type robotic vacuum cleaner. Figure 10 This is a flowchart illustrating the sewage discharge system of the sweeping robot that uses a household appliance gas-liquid transfer pump in this utility model. Detailed Implementation

[0018] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0020] It should be noted that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0021] It should be noted that the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0022] It should be noted that the terms "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the above terms in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0023] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0025] Existing household appliance pumps suffer from limitations in installation location and require complex systems to achieve water intake, drainage, air intake, and air exhaust functions, resulting in large appliance size, high cost, and poor user experience.

[0026] Based on the above problems, this utility model proposes a gas-liquid transfer pump for household appliances, such as... Figures 1 to 7 As shown: The household appliance gas-liquid pump includes a pump body 1, an impeller 2, and a motor 3. The pump body 1 is an integral mounting carrier with a pump chamber 100 and a flow divider 101 inside. The flow divider 101 is divided into an independent inlet chamber 1010 and an outlet chamber 1011 by a partition plate 4. The inlet chamber 1010 is connected to an inlet pipe 5, and the outlet chamber 1011 is connected to an outlet pipe 6. The pump chamber 100 is connected to the inlet chamber 1010 and the outlet chamber 1011 through a suction port 7 and a discharge port 8, respectively. The flow rate of the suction port 7 gradually increases along the rotation direction of the impeller 2, and a stable negative pressure can be formed when the impeller 2 rotates, improving the suction and self-priming efficiency. The flow rate of the discharge port 8 gradually decreases along the rotation direction of the impeller 2, and a high-pressure exhaust can be formed when the impeller 2 rotates, ensuring sufficient power for gas-liquid transportation. This flow rate design is the key to achieving self-priming and high-pressure transportation, solving the problem of traditional centrifugal pumps lacking self-priming function.

[0027] Multiple inlet pipes 5 and outlet pipes 6 can be provided to adapt to different scenarios such as multi-area sewage discharge for robotic vacuum cleaners and multi-pipe water supply for dishwashers. The angle of the inlet pipes 5 and outlet pipes 6 can also be set as needed; for example, in this application, the inlet pipes 5 and outlet pipes 6 are set vertically.

[0028] In some embodiments, the flow divider 101 is disposed between the motor 3 and the pump chamber 100. The output shaft of the motor 3 passes through the flow divider 101 and extends into the pump chamber 100, and is directly connected to the impeller 2. This direct connection structure shortens the transmission path, reduces operating vibration and energy loss, and makes the pump body 1 more compact, which is beneficial to reducing the space occupied inside the appliance.

[0029] In some embodiments, a flow channel is formed between the impeller 2 and the inner wall of the pump chamber 100, and the flux change of the flow channel is consistent with the flux change of the impeller 2 along the rotation direction and the inlet 7 and outlet 8. For example, as... Figure 7 As shown, the impeller 2 is eccentrically positioned within the pump chamber 100, forming a crescent-shaped flow channel. The flux change of this flow channel first increases and then decreases with the rotation of the impeller 2, consistent with the flux changes at the suction inlet 7 and discharge outlet 8, and their assembly positions are also aligned. This provides a structural basis for gas-liquid mixing and transport, enabling the pump body 1 to independently draw water or gas, as well as achieve simultaneous gas-liquid transport. It is also compatible with media containing particulate matter, eliminating the need for additional filtration devices. It should be understood that the preferred structure is an eccentrically positioned impeller 2; correspondingly, the impeller 2 and pump chamber 100 are concentrically installed, but forming a crescent-shaped flow channel is also acceptable.

[0030] Flux directly reflects the flow capacity of the corresponding opening or channel, and can also be referred to as area or flow rate. Flux change generally refers to a consistent trend, but it can also mean that both the trend and the magnitude are consistent.

[0031] In some embodiments, the diversion cavity 101 is provided with a mounting cavity 9, through which the output shaft of the motor 3 passes, and a seal 10 is provided between the two. The seal 10 can be an O-ring or a lip seal, etc.; preferably, the seal 10 is a skeleton seal 10, including an inner lip 1000 and an outer skeleton 1001, with a gap 1002 between them to provide the inner lip 1000 with room for movement. The outer skeleton 1001 abuts against the inner wall of the mounting cavity 9 to form a static seal, and the inner lip 1000 abuts against the outer circumferential surface of the output shaft to form a dynamic seal. The double sealing structure ensures the sealing reliability of the pump body 1 under high-speed rotation and high-pressure conveying scenarios, and avoids gas and liquid leakage from affecting its use.

[0032] The motor 3 includes a positioning ring 300 disposed on the outer periphery of its output shaft. The positioning ring 300 is embedded in the mounting cavity 9 to form a positioning fit, ensuring the coaxiality of the output shaft and the pump body 1 and preventing eccentric swinging during rotation. A sealing cover 11 is provided between the positioning ring 300 and the sealing member 10, and the sealing member 10 is pressed tightly in the mounting cavity 9 by the sealing cover 11, which improves the sealing stability and prevents gas and liquid media from leaking to the motor 3 side.

[0033] The pump body 1 includes a pump casing 12, a flow divider shell 13, and a pump cover 14, which are connected in sequence by bolts. The detachable design facilitates subsequent maintenance and component replacement. The pump chamber 100 is formed between the pump casing 12 and the pump cover 14, and the flow divider chamber 101 is formed between the pump casing 12 and the flow divider shell 13. The suction port 7 and the discharge port 8 are located on the end face of the pump casing 12 near the flow divider shell 13, which is a reasonable layout and facilitates the flow of the medium.

[0034] To further improve sealing performance, a first sealing ring 15 is provided between the pump housing 12 and the pump cover 14, preferably an O-ring. A second sealing ring 16 is provided between the flow divider housing 13 and the pump housing 12. The flow divider housing 13 includes a sealing abutment end 1300. The end face of the pump housing 12 near the flow divider housing 13 has a sealing groove 1200 adapted to the sealing abutment end 1300. The second sealing ring 16 is a non-continuous inlet chamber 1010 and outlet chamber 1011 within the flow divider cavity 101, preventing media cross-flow and enhancing the overall sealing performance of the pump body 1.

[0035] The diverter housing 13 is provided with a connection hole, and the motor 3 is provided with a threaded hole. The connection is made by a bolt passing through the connection hole and the threaded hole. A third sealing ring 17 is provided between the bolt head and the connection hole.

[0036] In some embodiments, the minimum flow dimensions of the inlet 7 and outlet 8 are designed based on the maximum diameter of the particles, and the minimum flow dimensions of the impeller 2 are designed based on the maximum diameter of the particles to achieve clogging-free operation.

[0037] The working principle of this gas-liquid pump is as follows: When using it for the first time, inject a small amount of water into the pump chamber 100 and start the motor 3.

[0038] Inhalation process: A special crescent-shaped, sealed flow channel is formed between the impeller 2 and the pump casing 12. The output shaft drives the impeller 2 to rotate, and water is thrown around the pump chamber 100 under centrifugal force, forming a water ring tightly attached to the inner wall of the pump chamber 100. A crescent-shaped space is formed between the hub of the impeller 2 and the water ring, and this space is divided into several small chambers by the blades of the impeller 2. As the impeller 2 rotates, the volume of these small chambers gradually increases, and the pressure inside the chambers decreases. When the pressure is lower than the pressure inside the pumped container, gas enters the small chamber through the suction port 7, achieving self-priming.

[0039] Pressurization process: As the impeller 2 continues to rotate, the volume of the small chamber gradually decreases, the gas inside the chamber is compressed, and the pressure increases. During this process, the volume of the gas is compressed and the pressure gradually increases.

[0040] Exhaust process: When the volume of the small chamber further decreases and the pressure inside the chamber is higher than the pressure at the outlet 8, the gas will be discharged from the pump body through the outlet 8, completing the exhaust process. This cycle repeats continuously, allowing gas to be continuously extracted and maintaining a certain degree of vacuum.

[0041] Water suction process: When a certain vacuum is formed inside the pump, water enters the pump chamber 100 through the inlet pipe 5 for rapid water suction. Similarly, as the volume of the small chamber formed by the impeller 2 and the pump chamber 100 gradually decreases, the pressure rises and the water is quickly discharged, completing the water pump suction process.

[0042] Vacuum restoration process: When the water is pumped out, as the impeller 2 continues to rotate, the pump chamber 100 is filled with water except for the crescent-shaped water ring volume, and all the excess water is discharged. The pump continues to maintain a vacuum state, and at this time it resumes the suction state. This process can completely pump out the water vapor in the water tank or other locations.

[0043] This application also provides a household appliance, including a gas-liquid delivery pipeline, wherein the gas-liquid delivery pipeline is equipped with the aforementioned gas-liquid pump, and the household appliance may be a robot vacuum cleaner, a kettle, a washing machine, etc.

[0044] Example 1: such as Figure 8As shown, a traditional automatic water-filled robotic vacuum cleaner's wastewater drainage system typically includes a vacuum pump, a vacuum zone, a wastewater tank, a wastewater pump, several control valves, sealing devices, a safety valve monitoring device, and a wastewater container. The vacuum zone is connected to the wastewater tank and container. When wastewater needs to be drained, the machine sends a command to activate the vacuum pump, creating a vacuum in the space connecting the wastewater tank and container. Due to the lower pressure in this area, wastewater is drawn into the wastewater tank through the pipes. When the wastewater tank reaches a certain level, the wastewater pump receives a command to drain the wastewater. A valve with a specific function needs to be installed between the wastewater pump and the wastewater tank. During vacuuming, the wastewater tank and vacuum zone are completely sealed; during drainage, the valve opens, allowing the wastewater pump to drain normally. This wastewater system has the following shortcomings: 1. The vacuum pump in this system must be cleaned and protected to prevent impurities and sewage from being sucked in during the vacuuming process, which could cause the vacuum pump to fail. The vacuum pump usually needs to be equipped with a silencer to reduce noise.

[0045] 2. A wastewater tank must be installed in this system. Water must first be drawn into the wastewater tank using a vacuum system, and then discharged using a wastewater pump. A specific valve must be installed between the wastewater tank and the wastewater pump. When the valve is closed, it must prevent outside air from being drawn in during the vacuuming process. When the valve is open, the wastewater discharge process must proceed normally, and it must prevent impurities and particles from remaining, which could cause the valve to fail to seal.

[0046] 3. The sewage pump in this system also needs to be specially designed, and needs to be designed with anti-clogging capabilities according to the product's flow capacity requirements.

[0047] 4. Because the sewage pump in this system has no air suction capability, the sewage and impurities in the sewage tank cannot be completely drained. It must be cleaned to prevent bacteria and odors.

[0048] 5. This system requires the complete removal of water vapor, impurities, and wastewater from the wastewater box. However, because it uses a vacuum pump to draw in negative pressure to remove water and water vapor, rather than directly pumping in water vapor and wastewater, the pump's performance utilization rate is low. Furthermore, the water vapor in the wastewater box will not be completely removed.

[0049] 6. The system layout must be as follows: the wastewater box is at the bottom of the product, and the water tank is placed at a higher position in order for the drainage pump to drain the wastewater in a timely manner. The water tank has a certain volume and must be able to hold the amount of water used for a single cleaning. In addition, the vacuum pump, vacuum area, and silencer need to be arranged reasonably, which results in a larger product size and relatively higher cost.

[0050] like Figure 9As shown, the traditional water tank version of the robotic vacuum cleaner typically uses a vacuum pump to create negative pressure in a certain area, sucking wastewater into a wastewater tank, which is then manually cleaned periodically. The wastewater box, wastewater tank, and vacuum area are connected.

[0051] To solve the above problems, such as Figure 10 As shown, by simply using the household appliance air-liquid pump of this application to directly connect the sewage box to the discharge pipe, a sewage system for the sweeping robot can be formed, directly replacing the sewage system of the traditional sweeping robot. Utilizing the rapid suction feature, all impurities, dirt, and water vapor in the sewage box are pumped into the sewage tank for subsequent cleaning.

[0052] This pump has the following advantages: 1. This pump has a certain vacuuming capacity and can directly extract air and water vapor from the sewage box.

[0053] 2. This pump has a certain pumping capacity, can be placed in any position on the product, and can quickly complete pumping and drainage.

[0054] 3. Because the pump is designed to be clog-free, the medium can contain impurities and dirt of a certain particle diameter during the pumping of air and water without affecting the pump's performance.

[0055] 4. This pump has the functions of vacuuming and sewage pumping. It only requires adding a certain amount of water during the initial start-up, or placing the pump in a slightly lower water level location so that a certain amount of water enters the pump before it can operate. Subsequent operation does not require this step. Because of the water medium inside the pump, the noise level is generally lower than that of ordinary vacuum pumps.

[0056] 5. Due to the pump's immediacy, this product can achieve immediate pumping and discharging without the need for a water tank to store sewage.

[0057] 6. Because the pump directly draws water from the sewage box, it can remove water vapor and impurities from the sewage box relatively cleanly, without leaving any odorous dirt.

[0058] 7. This product can replace the wastewater drainage system of the automatic water supply and drainage version of the sweeping robot, achieving simplification, low cost, high efficiency, and miniaturization, and the reliability of the product is also increased accordingly.

[0059] Example 2: Existing kettles or water heaters typically use positive displacement pumps (piston pumps and diaphragm pumps) to draw hot water. Positive displacement pumps generally contain rubber diaphragms, which are prone to aging under hot water conditions, resulting in odors, decreased functionality, and short lifespan. Therefore, rubber modification is required, which increases costs. In addition, to circumvent the shortcomings of positive displacement pumps, a common household appliance impeller pump is used. However, this impeller pump has the following problems: it lacks self-priming capability and must be installed below the water surface, limiting its placement; furthermore, since the impeller pump requires water to discharge, once the inlet is emptied, residual water will remain in the waterway if there is no subsequent water supply. Additionally, because some water cannot be discharged, water hammer will occur in the pipeline after the pump stops. This causes significant impact on the pipeline and oscillation of the water within it, making it difficult to monitor the water level at the bottom of the tank before shutting down. This leads to system problems, requiring additional flow and pressure stabilization measures to resolve, increasing overall cost and complicating the system.

[0060] To solve the above problems, the household appliance gas-liquid pump of this application can be used. This is primarily because the pump can be installed in any location. When installed above the water surface, it only requires a small amount of water to be added for initial operation. When installed below the water surface, no water filling is needed; simply connect it to the pipeline. After hot or cold water is discharged, the pump can continue to vent air, using air pressure to expel any remaining water, ensuring no residual water remains in the pump or pipeline. Furthermore, because the pump has a vacuum function, it will also remove moisture from the pipeline, keeping the entire water circuit dry and sterile.

[0061] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0062] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0063] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A household appliance gas-liquid pump, characterized in that, The pump includes a pump body, an impeller, and a motor. The pump body is provided with a pump chamber and a flow divider chamber. The impeller is driven by the motor and rotates within the pump chamber. The flow divider chamber is provided with a partition plate, which divides it into an inlet chamber and an outlet chamber. The inlet chamber is connected to an inlet pipe, and the outlet chamber is connected to an outlet pipe. The pump chamber and the inlet and outlet chambers are respectively provided with an inlet and an outlet. The flow rate of the inlet gradually increases along the impeller rotation direction to form negative pressure intake, and the flow rate of the outlet gradually decreases along the impeller rotation direction to form high pressure exhaust.

2. The household appliance gas-liquid pump according to claim 1, characterized in that, The flow divider is located between the motor and the pump chamber, and the output shaft of the motor passes through the flow divider and extends into the pump chamber, directly connecting with the impeller.

3. A household appliance gas-liquid pump according to claim 2, characterized in that, The flow divider cavity is provided with an installation cavity, the output shaft of the motor passes through the installation cavity, and a seal is provided between the motor and the installation cavity.

4. A household appliance gas-liquid pump according to claim 3, characterized in that, The motor includes a positioning ring disposed on the outer periphery of its output shaft. The positioning ring is embedded in the mounting cavity to form a positioning fit. A sealing cover is provided between the positioning ring and the sealing element, and the sealing element is pressed against the mounting cavity by the sealing cover.

5. A household appliance gas-liquid pump according to claim 3, characterized in that, The sealing element is a skeleton sealing element, which includes an inner lip and an outer skeleton, with a gap between them for the inner lip to move. The outer peripheral surface of the outer skeleton abuts against the inner wall of the mounting cavity to form a static seal, and the inner ring of the inner lip abuts against the outer peripheral surface of the motor output shaft to form a dynamic seal.

6. A household appliance gas-liquid pump according to claim 2, characterized in that, The pump body includes a pump casing, a flow divider casing, and a pump cover. The pump cover, pump casing, and flow divider casing are connected in sequence by bolts. The pump cavity is formed between the pump casing and the pump cover. The flow divider cavity is formed between the pump casing and the flow divider casing. The suction port and discharge port are located on the end face of the pump casing near the flow divider casing.

7. A household appliance gas-liquid pump according to claim 6, characterized in that, A first sealing ring is provided between the pump casing and the pump cover, and a second sealing ring is provided between the flow divider shell and the pump casing.

8. A household appliance gas-liquid pump according to claim 7, characterized in that, The flow divider housing includes a sealing abutment end. The pump housing has a sealing groove on its end face near the flow divider housing that is adapted to the sealing abutment end. The second sealing ring is a non-circular sealing ring that is adapted to the sealing abutment end. The sealing abutment end presses the non-circular sealing ring into the sealing groove, so that a non-communicating inlet and outlet cavity is formed in the flow divider cavity.

9. A household appliance gas-liquid pump according to claim 1, characterized in that, A flow channel is formed between the impeller and the inner wall of the pump chamber. The flux change of the flow channel is consistent with the flux change of the impeller rotation direction and the inlet and outlet.

10. A household appliance, including a gas-liquid delivery pipeline, characterized in that, The gas-liquid delivery pipeline is equipped with a household appliance gas-liquid pump as described in any one of claims 1 to 9.

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