Heating pumps and dishwashers

Abstract

The utility model discloses a heating pump and a dishwasher, and relates to the technical field of household appliances, wherein the heating pump comprises a pump casing, a motor, a heater and an impeller, the pump casing is mounted on the motor, a pump cavity is formed in the pump casing, the heater is located in the pump cavity, the impeller is arranged in the pump cavity and is transmission-connected with the motor, the impeller comprises an impeller seat and an impeller cover, a first blade is arranged on the impeller seat, the impeller cover is connected to a side of the first blade facing away from the impeller seat, and a second blade is arranged on a side of the impeller cover facing away from the first blade; the technical solution provided by the utility model increases the flow velocity of water flow near the heater, improves the conduction efficiency of the water flow, and reduces the energy consumption of the heating pump.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a heating pump and a dishwasher. Background Art

[0002] With the rapid development of science and technology, automated home appliances have more functions to better serve people's lives. For example, an automatic dishwasher can heat the water flow in the pump body while driving the water flow through the pump body, so that it can wash dishes more conveniently and provide convenience for people's lives.

[0003] When the dishwasher is running, the motor drives the impeller to stir the water flow, and the heater is heated accordingly. However, the limitations of the conventional impeller and pump cavity cause the water flow rate near the heater to be slower, which slows down the heat conduction, making the heater heating time too long and increasing energy consumption. Utility Model Content

[0004] The main purpose of the utility model is to provide a heating pump and a dishwasher, aiming to increase the flow rate of water near the heater, improve the conduction efficiency of the water flow, and reduce the energy consumption of the heating pump.

[0005] To achieve the above-mentioned purpose, the heating pump proposed by the utility model comprises:

[0006] include:

[0007] Motor;

[0008] A pump housing, the pump housing being mounted on the motor, and a pump cavity being formed in the pump housing;

[0009] a heater located in the pump chamber; and

[0010] An impeller is arranged in the pump chamber and is transmission-connected to the motor. The impeller comprises an impeller seat and an impeller cover. The impeller seat is provided with a first blade. The impeller cover is connected to a side of the first blade facing away from the impeller seat. A second blade is provided on a side of the impeller cover facing away from the first blade.

[0011] In one embodiment, a height of the second blade along the axial direction of the impeller seat is h, where h>0.5 mm.

[0012] In one embodiment, a plurality of the second blades are provided, and one first blade is provided corresponding to one second blade.

[0013] In one embodiment, the first blade and / or the second blade is / are arranged in an arc shape.

[0014] In one embodiment, the impeller seat and the first blade are integrally injection molded; and / or the impeller cover and the first blade are integrally injection molded.

[0015] In one embodiment, the pump casing is provided with a first water inlet and a first water outlet, the first water inlet and the first water outlet are both connected to the pump chamber, the impeller cover is provided with a second water inlet, two adjacent first blades are enclosed with the impeller seat and the impeller cover to form a second water outlet and a flow chamber, the first water inlet is connected to the second water inlet, and the first water outlet is connected to the second water outlet.

[0016] In one embodiment, the impeller further includes a mounting plate, which is arranged in a ring shape and extends axially along the impeller seat, one end of the mounting plate is connected to the second water inlet, and the other end of the mounting plate is connected to the first water outlet.

[0017] In one embodiment, the heating pump further includes a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are sealed and connected to the first water inlet and the first water outlet, respectively.

[0018] In one embodiment, the heater is a heating tube, and the heating tube is located above the impeller cover; or the heating tube is arranged around the outer periphery of the impeller seat.

[0019] In one embodiment, the heating tube is formed by bending the same tube.

[0020] In one embodiment, the motor includes a stator, a rotor and a bearing, the stator is mounted on the pump housing, and the stator and the rotor are rotatably connected via the bearing.

[0021] In one embodiment, the pump housing is snap-connected to the stator; or the pump housing is screw-locked to the stator.

[0022] The utility model also provides a dishwasher, comprising the heating pump as described above.

[0023] The heating pump in the technical solution of the utility model includes a pump casing, a motor, a heater and an impeller. The pump casing is installed on the motor. A pump cavity is formed in the pump casing. The heater is located in the pump cavity. The impeller is arranged in the pump cavity and is transmission-connected to the motor. The impeller includes an impeller seat and an impeller cover. A first blade is arranged on the impeller seat. The impeller cover is connected to a side of the first blade facing away from the impeller seat. A second blade is arranged on a side of the impeller cover facing away from the first blade. The motor drives the impeller seat and the impeller cover to rotate, thereby accelerating the flow speed of water in the pump cavity through the first blade and the second blade, thereby improving the conduction efficiency of the water flow at the heater, and thereby reducing the energy consumption of the heating pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of a heating pump provided by the utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the impeller.

[0027] Description of Figure Numbers:

[0028] 10. Pump casing; 11. First water inlet; 12. Pump chamber; 20. Motor; 21. Stator; 22. Rotor; 30. Heating tube; 40. Impeller; 41. Impeller seat; 411. First blade; 412. Flow chamber; 413. Second water outlet; 42. Impeller cover; 421. Second blade; 422. Second water inlet; 43. Mounting plate; 51. Water inlet pipe; 52. Water outlet pipe.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0033] The utility model provides a heating pump, comprising:

[0034] Motor 20;

[0035] A pump housing 10, wherein the pump housing 10 is mounted on the motor 20, and a pump chamber 12 is formed in the pump housing 10;

[0036] a heater, the heater being located in the pump chamber 12; and

[0037] The impeller 40 is disposed in the pump chamber 12 and is transmission-connected to the motor 20. The impeller 40 includes an impeller seat 41 and an impeller cover 42. The impeller seat 41 is provided with a first blade 411. The impeller cover 42 is connected to a side of the first blade 411 away from the impeller seat 41. A second blade 421 is provided on a side of the impeller cover 42 away from the first blade 411.

[0038] The heating pump in the technical solution of the utility model includes a pump casing 10, a motor 20, a heater and an impeller 40. The pump casing 10 is installed on the motor 20. A pump chamber 12 is formed in the pump casing 10. The heater is located in the pump chamber 12. The impeller 40 is arranged in the pump chamber 12 and is transmission-connected to the motor 20. The impeller 40 includes an impeller seat 41 and an impeller cover 42. A first blade 411 is provided on the impeller seat 41. The impeller cover 42 is connected to the side of the first blade 411 away from the impeller seat 41. A second blade 421 is provided on the side of the impeller cover 42 away from the first blade 411. The motor 20 drives the impeller seat 41 and the impeller cover 42 to rotate, thereby accelerating the flow speed of water in the pump chamber 12 through the first blade 411 and the second blade 421, thereby improving the conduction efficiency of the water flow at the heater, thereby reducing the energy consumption of the heating pump.

[0039] Specifically, the height of the second blade 421 along the axial direction of the impeller seat 41 is h, and h>0.5mm. It can be understood that the height of the second blade 421 can determine the water flow driven by the impeller cover 42 when it rotates. Therefore, by increasing the height of the second blade 421 along the axial direction of the impeller seat 41, the water flow driven by the impeller cover 42 when it rotates can be increased. Therefore, if h<0.5mm, the water flow driven by the impeller cover 42 when it rotates will be small, so that the flow rate of the water flow near the heater is limited, and thus the user's demand for the energy consumption of the heating pump cannot be met. At the same time, it should be noted that the upper limit of the height of the second blade 421 along the axial direction of the impeller seat 41 is not limited because the internal structures of different heating pumps are different, and the upper part of the second blade 421 does not contact or interfere with the internal parts of the heating pump.

[0040] There are multiple second blades 421. By providing multiple second blades 421, the flow rate of the water flow near the heater can be increased, thereby improving the conduction efficiency of the water flow, and further reducing the energy consumption of the heating pump. In one embodiment, one first blade 411 is provided corresponding to one second blade 421, and at this time, the first blade 411 is provided with a second blade 421 along the axial direction of the impeller seat 41, and the shapes are the same, and at this time, the heights of the first blade 411 and the second blade 421 along the axial direction of the impeller seat 41 can be different.

[0041] Of course, in another embodiment, the number of the first blades 411 and the second blades 421 may be the same, but the positions of the first blades 411 and the second blades 421 are staggered, and the positions and shapes of the first blades 411 and the second blades 421 may not be limited. Of course, in another embodiment, the number of the first blades 411 and the second blades 421 may be different, and their positions and shapes may also be different.

[0042] In one embodiment, the first blade 411 and / or the second blade 421 are arranged in an arc shape. It can be understood that the arc-shaped first blade 411 and the second blade 421 have the following advantages: 1. Increase flow: The design of the arc-shaped blade makes the liquid flow in a scanning manner when passing through the blade, which can increase the flow rate and thus increase the flow of the heating pump. This design helps to push the liquid through the pump body more effectively and improve the working efficiency of the pump. 2. Increase pressure: The outlet end of the vane pump usually needs to generate a certain pressure, and the arc-shaped blade can effectively increase the pressure of the liquid through its streamlined design and increase the operating efficiency of the heating pump. This design enables the pump to work more stably and efficiently during the heating process. 3. Reduce the wear of the heating pump: When the liquid passes through the blade, it will cause wear on the blade surface. The arc-shaped blade, due to its streamlined design, makes the flow of the liquid more uniform, reduces the friction on the blade surface, and thus reduces the wear of the pump. This not only extends the service life of the pump, but also reduces maintenance costs.

[0043] In one embodiment, the impeller seat 41 and the first blade 411 are integrally injection molded; and / or the impeller cover 42 and the first blade 411 are integrally injection molded. The integral injection molding method makes the connection strength between the impeller seat 41, the first blade 411, the impeller cover 42 and the second blade 421 higher, and the sealing effect at the connection is good, thereby improving the structural strength and sealing effect of the impeller, and further improving the quality of the impeller 40; at the same time, the integral injection molding method has a mature process, low processing cost, and the integral injection molding method greatly shortens the production cycle of the impeller 40. Of course, the impeller cover 42 and the second blade 421 can also be integrally injection molded.

[0044] In another embodiment, the impeller seat 41 and the first blade 411 are formed by ultrasonic welding; and / or the impeller cover 42 and the first blade 411 are formed by ultrasonic welding. It can be understood that ultrasonic welding does not require preheating and heat preservation, thereby greatly shortening the processing time between the impeller seat 41 and the impeller cover 42 and the first blade 411; at the same time, ultrasonic energy is consumed only in the precise area where welding is required, which is efficient and economical. Ultrasonic welding can achieve seamless welding and reduce the welding interface, so the stability is very good. Finally, the ultrasonic welding process is clean, stable, reliable, and has low energy consumption. Of course, the impeller cover 42 and the second blade 421 can also be formed by ultrasonic welding.

[0045] In one embodiment, the pump housing 10 is provided with a first water inlet 11 and a first water outlet, the first water inlet 11 and the first water outlet are both connected to the pump chamber 12, the impeller cover 42 is provided with a second water inlet 422, the two adjacent first blades 411, the impeller seat 41 and the impeller cover 42 are enclosed to form a second water outlet 413 and a flow chamber 412, the first water inlet 11 is connected to the second water inlet 422, and the first water outlet is connected to the second water outlet 413. Normal temperature water enters the second water inlet 422 from the first water inlet 11, then enters the second water outlet 413 through the flow chamber 412, and finally flows out through the first water outlet; when the water flows between the second water outlet 413 and the first water outlet, the first blade 411 and the second blade 421 accelerate the flow rate in the pump chamber 12, thereby heating the water in the pump chamber 12 through the heater.

[0046] Furthermore, the impeller 40 further includes a mounting plate 43, which is arranged in an annular shape and extends along the axial direction of the impeller seat 41. One end of the mounting plate 43 is connected to the second water inlet 422, and the other end of the mounting plate 43 is connected to the first water outlet. By providing the annular mounting plate 43, the impeller cover 42 can be sealed and connected to the pump housing 10, reducing the possibility that the water flow entering from the first water inlet 11 enters the pump chamber 12 through the installation gap between the mounting plate 43 and the pump housing 10, thereby improving the stability and reliability of the heating pump.

[0047] Furthermore, the mounting plate 43 and the impeller cover 42 are integrally formed, thereby reducing the connection between the mounting plate 43 and the impeller cover 42, while also improving the sealing between the mounting plate 43 and the impeller cover 42, reducing the possibility of water leakage between the mounting plate 43 and the impeller cover 42, thereby improving the stability and reliability of the heating pump. Among them, the integral forming of the mounting plate 43 and the impeller cover 42 can be injection integral forming, bending integral forming, and of course stamping integral forming. These integral forming processing technologies are relatively mature, with low processing costs and stable and reliable performance.

[0048] The second water inlet 422 on the impeller cover 42 may be a structure of a plurality of small holes arranged at intervals, or may be a structure of Figure 2 A large hole structure is provided in the middle, and the large hole structure reduces the resistance when the first water inlet 11 flows in, so that the water flowing in from the first water inlet 11 can smoothly enter the flow cavity 412.

[0049] Optionally, the heating pump further includes an inlet pipe 51 and an outlet pipe 52, and the inlet pipe 51 and the outlet pipe 52 are respectively sealed and connected to the first water inlet 11 and the first water outlet. By setting the inlet pipe 51 and the outlet pipe 52, when the heating pump needs to be connected to an external flow path, it is directly connected to the inlet pipe 51 and the outlet pipe 52, thereby facilitating the installation of the external flow path; if the external pipeline is directly connected to the first water inlet 11 and the first water outlet of the heating pump, it will cause the external pipeline to cause wear or unnecessary damage to the heating pump during installation. At this time, it is costly to maintain the first water inlet 11 and the first water outlet of the heating pump, and it may even directly cause the heating pump to be unusable. Therefore, by setting the inlet pipe 51 and the outlet pipe 52, the damage to the first water inlet 11 and the first water outlet of the heating pump is reduced, thereby increasing the service life of the heating pump.

[0050] In one embodiment, the heater is a heating tube 30, and the heating tube 30 is located above the impeller cover 42. At this time, the second blade 421 on the impeller cover 42 can directly accelerate the water flow at the heating tube 30, thereby improving the conduction efficiency of the water flow and reducing the energy consumption of the heating pump.

[0051] In another embodiment, the heating pipe 30 is arranged around the outer periphery of the impeller seat 41. It can be understood that the first blade 411 on the impeller seat 41 mainly guides the water flow in the flow cavity 412. If the heating pipe 30 is arranged around the outer periphery of the impeller seat 41, the heating pipe 30 is arranged opposite to the second water outlet 413 at this time, and the water flow velocity at the heating pipe 30 is also relatively large. Therefore, the heat conduction efficiency near the heater is also relatively high at this time, thereby reducing the energy consumption of the heating pump.

[0052] Preferably, in one embodiment, the heating tube 30 is formed by bending the same tube. First, the one-piece design enables the heating tube 30 to transfer heat more effectively, avoiding the heat loss that may be caused by traditional welding or assembly methods. Secondly, the one-piece heating tube 30 has no welding points, which reduces the risk of performance degradation and failure caused by poor welding or material differences. Furthermore, the one-piece heating tube 30 will not produce open flames during the heating process, which effectively reduces the risk of fire and explosion and ensures the safety of the production environment. At the same time, the bending and forming process is mature and the processing cost is low, thereby reducing the production cost and production cycle of the heating tube 30, improving the performance and safety of the heating tube 30, and reducing the risk of explosion of the heating tube 30.

[0053] In one embodiment, the heating tube 30 is arranged in a ring shape; in another embodiment, the heating tube 30 is arranged in a spiral shape. The heating tube 30 arranged in a ring shape or a spiral shape is suitable for use in a relatively small space such as a motor 20. In a small space, the heating efficiency of the ring shape or the spiral shape is higher. At the same time, the size of the heating tube 30 can be flexibly set to adapt to different motors 20, thereby improving the applicability of the heating tube 30.

[0054] In one embodiment, the motor 20 includes a stator 21, a rotor 22, and a bearing. The stator 21 is mounted on the pump housing 10, and the stator 21 and the rotor 22 are rotatably connected via the bearing.

[0055] In one embodiment, the pump housing 10 is snap-connected to the stator 21. It can be understood that the snap-connection method does not require the use of other installation tools, the installation method is simple, and the snap-connection method is mature and stable, thereby increasing the reliability and stability of the stator 21 connection.

[0056] In another embodiment, the pump housing 10 is screwed to the stator 21. It can be understood that the screw locking method is simple and reliable, and the connection strength is high. The production cost of the screws is low, and the screws can be found everywhere, so even if the screws are damaged, the replacement cost is relatively low.

[0057] The utility model further proposes a dishwasher, which includes a heating pump. The specific structure of the heating pump refers to the above embodiment. Since the dishwasher in the technical solution of the utility model adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heating pump, characterized in that: include: Motor; A pump housing, the pump housing being mounted on the motor, and a pump cavity being formed in the pump housing; a heater, the heater being located in the pump chamber; as well as An impeller is arranged in the pump chamber and is transmission-connected to the motor. The impeller comprises an impeller seat and an impeller cover. The impeller seat is provided with a first blade. The impeller cover is connected to a side of the first blade facing away from the impeller seat. A second blade is provided on a side of the impeller cover facing away from the first blade.

2. The heat pump according to claim 1, characterized in that The height of the second blade along the axial direction of the impeller seat is h, and h>0.5mm.

3. The heat pump according to claim 1, characterized in that There are a plurality of second blades, and one first blade is arranged corresponding to one second blade.

4. The heat pump according to claim 1, characterized in that The first blade and / or the second blade are arranged in an arc shape.

5. The heat pump according to claim 1, characterized in that The impeller seat and the first blade are integrally injection-molded; and / or The impeller cover and the first blade are integrally injection-molded.

6. The heat pump according to claim 1, characterized in that The pump casing is provided with a first water inlet and a first water outlet, the first water inlet and the first water outlet are both connected to the pump chamber, the impeller cover is provided with a second water inlet, two adjacent first blades are enclosed with the impeller seat and the impeller cover to form a second water outlet and a flow chamber, the first water inlet is connected to the second water inlet, and the first water outlet is connected to the second water outlet.

7. The heating pump according to claim 6, characterized in that The impeller also includes a mounting plate, which is arranged in a ring shape and extends axially along the impeller seat. One end of the mounting plate is connected to the second water inlet, and the other end of the mounting plate is connected to the first water outlet.

8. The heating pump according to claim 6, characterized in that The heating pump further comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe and the water outlet pipe are respectively sealed and connected to the first water inlet and the first water outlet.

9. The heat pump according to claim 1, characterized in that: The heater is a heating tube, and the heating tube is located above the impeller cover; or The heating tube is arranged in an annular manner on the outer periphery of the impeller seat.

10. The heat pump according to claim 9, characterized in that The heating tube is formed by bending the same tube.

11. The heat pump according to claim 1, characterized in that The motor comprises a stator, a rotor and a bearing. The stator is mounted on the pump housing. The stator and the rotor are rotatably connected via the bearing.

12. The heat pump according to claim 11, characterized in that The pump housing is snap-connected to the stator; or The pump housing is screwed to the stator.

13. A dishwasher, characterized in that: Comprising a heat pump as claimed in any one of claims 1 to 12.

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