Heating pump and dish washing machine

Abstract

The utility model discloses a heating pump and a dish-washing machine, the heating pump is used for the dish-washing machine, and the heating pump comprises a pump shell; at least one part of the barrel is arranged in the pump shell, a water inlet flow channel is arranged on the inner side of the barrel, and a heating pump cavity is formed between the barrel and the pump shell; the motor is provided with a rotating shaft and connected with the pump shell, and the rotating shaft extends into the heating pump cavity; the impeller is arranged in the heating pump cavity and mounted on the rotating shaft, and the impeller is opposite to the barrel in the axis direction; and the heating assembly is arranged in the barrel and surrounds the water inlet flow channel, and the heating assembly is separated from fluid in the heating pump and conducts heat. According to the heating pump disclosed by the embodiment of the invention, the heating assembly is arranged on the barrel body, so that the fluid can be heated by utilizing a larger surface of the barrel body, and the efficiency of the pump is ensured while the heating efficiency and the safety are considered.

Description

Technical Field

[0001] The present application relates to the technical field of dishwashers, and in particular to a heating pump and a dishwasher. Background Art

[0002] When washing dishes in a dishwasher, it is sometimes necessary to heat the water for steam washing or hot water washing to improve the washing efficiency and effect. In the related art, a heating element is integrated into a pump body to form a heating pump, which can be used to drive and heat the fluid. In the heating of the related art, the heating component is immersed in water for heating, which affects the efficiency of the pump. Utility Model Content

[0003] An object of the present application is to provide a heating pump.

[0004] Another object of the present application is to provide a dishwasher.

[0005] A heating pump according to an embodiment of the present application is used for a dishwasher and includes: a pump casing; a cylinder, at least a portion of which is disposed in the pump casing, a water inlet channel is disposed inside the cylinder, and a heating pump cavity is disposed between the cylinder and the pump casing; a motor, the motor having a rotating shaft and connected to the pump casing, the rotating shaft extending into the heating pump cavity; an impeller, the impeller being disposed in the heating pump cavity and mounted on the rotating shaft, the impeller being opposite to the cylinder along the axial direction; a heating component, the heating component being disposed in the cylinder and arranged around the water inlet channel, the heating component being separated from the fluid in the heating pump and conducting heat thereto.

[0006] According to the heating pump of the embodiment of the present application, the heating component is arranged on the cylinder, which can utilize the larger surface of the cylinder to heat the fluid, taking into account both heating efficiency and safety while also ensuring the efficiency of the pump.

[0007] In addition, the heating pump according to the above embodiment of the present application may also have the following additional technical features:

[0008] In some embodiments, the barrel includes a first barrel portion and a second barrel portion disposed inside the first barrel portion, a heating groove is formed between the first barrel portion and the second barrel portion, and the heating assembly is disposed in the heating groove.

[0009] In some embodiments, the cylinder body also includes a first flow guide cover adapted to the shape of the impeller, the first flow guide cover is arranged on the outside of the impeller and connects the first cylinder portion and the second cylinder portion, and the first cylinder portion, the first flow guide cover and the first cylinder portion are connected to form the heating tank.

[0010] In some embodiments, the inner diameter of the first cylinder portion is larger than the outer diameter of the second cylinder portion, and the end of the first cylinder portion close to the impeller extends out of the second cylinder portion, and the first flow guide cover is configured to be inclined toward the impeller in a direction from the first cylinder portion to the second cylinder portion.

[0011] In some embodiments, an end edge of the first cylinder portion close to the impeller is connected to an outer periphery of the first air duct, and an end edge of the second cylinder portion close to the impeller is connected to an inner periphery of the first air duct.

[0012] In some embodiments, the first cylinder portion, the second cylinder portion and the first air guide cover are configured as an integrated structure.

[0013] In some embodiments, the cylinder body also includes an end plate, which connects one end of the first cylinder portion close to the impeller and one end of the second cylinder portion close to the impeller, and the first cylinder portion, the end plate and the first cylinder portion are connected to form the heating tank.

[0014] In some embodiments, the heating pump also includes: a second flow guide cover, the second flow guide cover is arranged on the outside of the impeller and is configured to adapt to the shape of the impeller, the second flow guide cover is located between the impeller and the cylinder, and the second flow guide cover is provided with an axial interface, and the axial interface is connected to the water inlet channel fluid.

[0015] In some embodiments, the heating pump further includes: a flow guide tube, the flow guide tube is connected to the axial interface of the second flow guide cover, the water inlet channel is formed on the inner side of the flow guide tube, the flow guide tube is passed through the second cylinder portion, and the heating component is indirectly arranged around the flow guide tube.

[0016] In some embodiments, the inner diameter of the axial interface is larger than the inner diameter of the guide tube, and a step structure is formed between the second cylinder portion guide cover and the guide tube.

[0017] In some embodiments, the end of the guide tube away from the second guide cover is configured as the inlet of the water inlet channel; or, the end of the guide tube away from the second guide cover extends out of the cylinder body; or, the end of the guide tube away from the second guide cover does not extend out of the cylinder body, and is connected to the end of the second guide cover through a heating pump water inlet pipe.

[0018] In some embodiments, in a projection along the axis of the pump casing, the cylinder falls into the second flow guide cover.

[0019] In some embodiments, the cylinder body further includes a flange portion, which is connected to an end of the first cylinder portion away from the impeller, extends radially outward, and is connected to the pump casing.

[0020] In some embodiments, the pump housing includes a first flange portion, and the flange portion is stacked and connected to the first flange portion; and / or, a second flange portion is provided on the outer periphery of the flange portion.

[0021] A dishwasher according to an embodiment of the present application includes the aforementioned heating pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a heating pump according to an embodiment of the present application.

[0023] Figure 2 It is a schematic diagram of the cooperation between the barrel and the heating assembly of a heating pump according to an embodiment of the present application.

[0024] Figure 3 It is a cross-sectional view of the matching structure of the barrel and heating component of a heating pump according to one embodiment of the present application.

[0025] Figure 4 It is a cross-sectional view of the matching structure of the barrel and heating component of a heating pump according to another embodiment of the present application.

[0026] Figure numerals: heating pump 10, water inlet channel 101, heating pump chamber 102, liquid inlet 103, liquid outlet 104, pump casing 11, first flange portion 111, cylinder 12, first cylinder portion 121, second cylinder portion 122, end plate 123, flange portion 124, second flange portion 125, motor 13, rotating shaft 131, impeller 14, heating assembly 15, first flow guide cover 161, second flow guide cover 162, flow guide cylinder 163. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0028] like Figure 1 According to the heating pump 10 of the embodiment of the present application, the heating pump 10 can be used in a dishwasher or in other equipment for pumping fluid and heating the fluid. The heating pump 10 may include a pump housing 11 and a cylinder 12, wherein at least a portion of the cylinder 12 is disposed in the pump housing 11, wherein the entire cylinder 12 may be disposed in the pump housing 11, or a portion of the cylinder 12 may be disposed in the pump housing 11. A water inlet channel 101 is disposed on the inner side of the cylinder 12, and a heating pump chamber 102 is disposed between the cylinder 12 and the pump housing 11. The water inlet channel 101 and the heating pump chamber 102 are respectively used for fluid to pass through.

[0029] The heating pump 10 may further include a motor 13 and an impeller 14. The motor 13 has a rotating shaft 131, and the motor 13 is connected to the pump housing 11. The rotating shaft 131 extends into the heating pump cavity 102. The impeller 14 is disposed in the heating pump cavity 102, and the impeller 14 is mounted on the rotating shaft 131. The impeller 14 is opposite to the cylinder 12 along the axial direction. The motor 13 can drive the impeller 14, and the impeller 14 is used to drive the fluid.

[0030] The heating assembly 15 is also included. The heating assembly 15 is arranged in the barrel 12 and around the water inlet channel 101. The heating assembly 15 can be used to heat the fluid. When the fluid passes through the heating pump, the heating assembly 15 can be used to heat the fluid. For example, the fluid enters the water inlet channel 101 from the inlet of the heating pump 10; then the fluid passes through the impeller and enters the heating pump chamber 102; then the fluid is sent out from the outlet of the heating pump 10. When the fluid passes through the heating pump, the heating assembly 15 can heat the fluid.

[0031] In addition, the heating component 15 is separated from the fluid in the heat pump and conducts heat to achieve insulation between the heating component 15 and the fluid. By separating the heating component 15 from the water inlet channel 101 and the heat pump cavity 102, the fluid is prevented from directly contacting the heating component 15, and the heating component 15 is isolated from the fluid, thereby avoiding safety hazards caused by the fluid being electrified, thereby improving the safety of the heat pump 10.

[0032] According to the heating pump 10 of the embodiment of the present application, the motor 13 can be used to drive the fluid to circulate, and the heating component 15 is arranged on the barrel 12, so that the larger surface of the barrel 12 can be used to heat the fluid, thereby improving the heating efficiency. In addition, the heating component 15 is arranged on the barrel 12, so that the heating component 15 can be prevented from hindering the fluid circulation, reducing the obstruction to the fluid, reducing the flow resistance, and improving the fluid circulation efficiency. The present application arranges the heating component on the barrel, so that the larger surface of the barrel can be used to heat the fluid, which takes into account both heating efficiency and safety while also ensuring the efficiency of the pump.

[0033] like Figure 1The heating pump 10 includes a motor 13, an impeller 14, a pump housing 11, a barrel 12, and a heating assembly 15. The first end of the pump housing 11 is sleeved with the motor 13 and a sealing ring is provided therebetween. The pump housing 11 can be fixedly connected and sealed with the motor 13. The pump housing 11 can include a first segment and a second segment. The first segment is sleeved with the motor 13, the second segment is connected to the first segment, and the radial dimension of the second segment is smaller than the radial dimension of the first segment. A step surface is connected between the inner circumference of the second segment and the inner circumference of the first segment, and the step surface can be configured to position the pump housing 11 and the motor 13. The second end of the pump housing 11 can have a first flange portion 111, and the first flange portion 111 can be configured to extend toward the inside of the pump housing 11. In addition, a rib can be provided on the outer edge of the first flange portion 111. The first flange portion 111 can be connected to the barrel 12 to close the heating pump cavity 102. The heating assembly 15 can be configured as an annular heating ring.

[0034] like Figure 1 In some embodiments, one end of the water inlet channel 101 is opposite to the impeller 14, and the other end is configured as the liquid inlet 103 of the heating pump 10. The fluid can enter the heating pump 10 through the liquid inlet 103. The liquid inlet 103 can be set as the entrance of the heating pump 10. During the use of the heating pump 10, the fluid can enter the water inlet channel 101 from the liquid inlet 103, and enter the heating pump cavity 102 under the driving action of the impeller 14.

[0035] like Figure 3 and Figure 4 In some embodiments, the barrel 12 includes a first barrel portion 121 and a second barrel portion 122, the second barrel portion 122 is disposed inside the first barrel portion 121, a heating groove is formed between the first barrel portion 121 and the second barrel portion 122, and the heating assembly 15 is disposed in the heating groove. The heating assembly 15 can be disposed in the heating groove, and the heat of the heating assembly 15 can be conducted to the first barrel portion 121 and / or the second barrel portion 122, and the surface of the first barrel portion 121 and / or the second barrel portion 122 can be used to heat the fluid. In addition, the heating assembly 15 is separated from the fluid in the heat pump by the first barrel portion 121 and the second barrel portion 122, so as to achieve insulation between the heating assembly 15 and the fluid.

[0036] The present invention uses heat conduction to transfer the heat of the heating component 15 to the fluid. The heating method of the heating component 15 is heat conduction rather than direct immersion. The insulation between the heating component 15 and the fluid in the water inlet channel 101 and the fluid in the heating pump chamber 102 effectively improves the safety of the heating pump 10.

[0037] At least two of the first cylinder 121, the second cylinder 122 and the pump housing 11 are arranged in a coaxial form, which can facilitate the passage of fluid, simplify the structure of the heating pump 10, and reduce the flow resistance of the fluid, thereby reducing the size of the heating pump 10, facilitating the miniaturization of the heating pump 10, reducing costs, and increasing the scope of application of the heating pump 10.

[0038] The shape of the cylinder in the present invention includes but is not limited to the following embodiments.

[0039] Implementation Method 1

[0040] The cylinder 12 also includes a first flow guide hood 161 that matches the shape of the impeller 14. The first flow guide hood 161 connects the first cylinder 121 and the second cylinder 122. The first flow guide hood 161 is set on the outside of the impeller 14. The first cylinder 121, the first flow guide hood 161 and the first cylinder 121 are connected to form a heating groove. The shape of the first flow guide hood 161 fits the structure of the impeller 14, wherein the first flow guide hood 161 can be set to be close to the impeller 14, and the wall surface is smooth, so as to ensure good pump efficiency. There is a heating component 15 in the cylinder. Since the cylinder extends into the pump casing, most of the heat of the heating component can be absorbed by the liquid in the heating pump 10 instead of dissipating to the air. The first flow guide hood 161 can be used to realize the diversion of the fluid, so that the fluid can pass through the impeller 14 smoothly, which is convenient for driving the circulation of the fluid and improving the pumping energy efficiency of the heating pump 10.

[0041] Among them, the first air guide cover 161 can be set as an integrated structure with the first barrel 121 and the second barrel 122, so as to improve the structural strength of the barrel and the sealing performance of the heating tank, avoid water entering the heating tank or leakage of the heat-conducting medium in the heating tank, and avoid problems such as water contacting the heating component 15 and causing insulation failure, thereby improving the stability and safety of the heating pump.

[0042] Optionally, the first air guide cover 161 is arranged on the outside of the impeller 14, and at least a portion of the first air guide cover 161 is arranged on the outer periphery of the impeller 14. In other words, at least a portion of the first air guide cover 161 and the impeller 14 are arranged along the radial direction of the impeller 14, which can facilitate the diversion of the fluid from the water inlet channel 101 to the impeller 14 and improve the driving efficiency of the impeller 14 on the fluid.

[0043] like Figure 4 The first cylinder portion 121 surrounds the second cylinder portion 122 and extends along the axial direction of the impeller 14. The edge of one end of the first cylinder portion 121 close to the impeller 14 is connected to the outer periphery of the first air duct 161, and the edge of one end of the second cylinder portion 122 close to the impeller 14 is connected to the inner periphery of the first air duct 161.

[0044] The inner diameter of the first barrel 121 is larger than the outer diameter of the second barrel 122, and the end of the first barrel 121 close to the impeller 14 extends out of the second barrel 122, and the first flow guide cover 161 is configured to be inclined toward the impeller 14 in the direction from the first barrel 121 to the second barrel 122. It is convenient to use the first flow guide cover 161 to guide the fluid, reduce the flow resistance during the fluid circulation process, and further optimize the fluid circulation efficiency. Among them, the first flow guide cover 161 can be set to a cone, or set to an arc that gradually tilts from the first barrel 121 to the second barrel 122 toward the impeller 14.

[0045] Implementation Method 2

[0046] like Figure 2 and Figure 3 The cylinder 12 also includes an end plate 123, which is connected to one end of the first cylinder 121 close to the impeller 14, and the end plate 123 is connected to one end of the second cylinder 122 close to the impeller 14. Specifically, the outer periphery of the end plate 123 is connected to one end of the first cylinder 121, and the inner periphery is connected to one end of the second cylinder 122. The first cylinder 121, the end plate 123 and the second cylinder 122 are connected to form a heating tank. The cylinder 12 can be made of stainless steel, wherein the cylinder 12 is filled with an insulating heat-conducting medium, and the heating pipe is placed in the insulating heat-conducting medium to achieve insulation between the heating pipe and the cylinder 12, and can conduct heat to the water inlet channel 101 and the heating pump cavity 102 to achieve effective heating of the fluid.

[0047] Implementation Method 3

[0048] The heating pump 10 further includes a second flow guide 162, which is disposed outside the impeller 14 and is configured to match the shape of the impeller 14. The second flow guide 162 is located between the impeller 14 and the cylinder 12. The second flow guide 162 is provided with an axial interface, which can be extended into the first cylinder 12 and is in fluid communication with the water inlet channel 101. The second flow guide 162 can be configured with the cylinder 12 as a split structure or an integrated structure. By extending the axial interface of the second flow guide 162 into the first cylinder 12, the fluid in the water inlet channel 101 can be conveniently directed to the impeller 14, further facilitating the circulation of the driving fluid and improving the pumping efficiency of the heating pump 10.

[0049] The shape of the second flow guide 162 fits the structure of the impeller 14, wherein the second flow guide 162 can be set to be close to the impeller 14, and the wall surface is smooth, so as to ensure good pump efficiency. There is a heating component 15 in the cylinder. Since the cylinder extends into the pump casing, most of the heat of the heating component can be absorbed by the liquid in the heating pump 10 instead of dissipating into the air. The second flow guide 162 can be used to guide the fluid so that the fluid can pass through the impeller 14 smoothly, which is convenient for driving the circulation of the fluid and improving the pumping efficiency of the heating pump 10.

[0050] In addition, in some examples, the heating pump 10 may also include a guide tube 163, which is connected to the axial interface of the second guide cover 162. Referring to the accompanying drawings, the guide tube 163 is located above the impeller 14 (refer to the upper part of the impeller 14 in the accompanying drawings), and the inner side of the guide tube 163 forms a water inlet channel 101. The guide tube 163 is inserted into the second cylinder portion, and the heating component 15 is indirectly arranged around the guide tube 163. By providing the guide tube 163, the fluid can be guided, so that the fluid can stably flow into the heating pump through the guide tube 163, thereby reducing the flow resistance of the fluid. In addition, the provision of a guide structure can also facilitate the installation and positioning of the cylinder, simplify the assembly process of the heating pump 10, and improve the stability of the heating pump 10.

[0051] As shown in the figure, the inner diameter of the axial interface is larger than the inner diameter of the guide tube, and a step structure is formed between the second guide cover 162 and the guide tube to make way for the impeller 14. By using the step to make way for the impeller 14, the end of the impeller 14 can extend into the second guide cover 162 and face the guide tube in the axial direction, reducing the size difference between the impeller inlet and the guide tube outlet, reducing the flow resistance of the fluid from the water inlet channel 101 to the impeller 14, and improving energy efficiency.

[0052] In one example, the end of the guide tube away from the second guide cover can be configured as the inlet of the water inlet channel, wherein the end of the guide tube away from the second guide cover can be extended out of the cylinder body, so as to simplify the structure of the heating pump, and facilitate the use of the guide tube to connect the external pipeline, thereby reducing the heat leakage of the cylinder body or the heating component, thereby further improving the heating efficiency.

[0053] In another example, the end of the guide tube away from the second guide cover does not extend out of the tube body, and is connected to the end of the second guide cover by setting a heating pump water inlet pipe, which can simplify the structure of the heating pump and facilitate the connection of external pipes.

[0054] In some embodiments of the present application, in combination with the above embodiments, in the projection along the axis of the pump housing 11, the cylinder 12 can fall into the second flow guide cover 162. Thus, the second flow guide cover 162 can be used to effectively guide the fluid, thereby improving the guiding effect of the second flow guide cover 162, thereby improving the pumping energy efficiency and heating speed of the heating pump 10, and effectively improving the performance of the heating pump 10.

[0055] The cylinder 12 and the second air guide cover in the present application can be set as an integral structure. For example, the cylinder 12 and the second air guide cover are integrally formed; or the cylinder 12 and the second air guide cover are welded, bonded or fixedly connected after being formed separately; the cylinder 12 and the second air guide cover can also be set as a split structure.

[0056] Implementation Method 4

[0057] In addition, the barrel 12 of the present invention may further include a flange portion 124, which is connected to the end of the first barrel portion 121 away from the impeller 14, and extends radially outward and connected to the pump casing 11. The flange portion 124 may be stacked and connected to the outer side of the aforementioned first flange portion 111, and is used for fixed connection between the inner casing and the pump casing 11.

[0058] Optionally, the pump housing 11 includes a first flange portion 111, and the flange portion 124 is stacked and connected to the first flange portion 111. The inner housing and the pump housing 11 can be fastened and sealed, thereby improving the stability and energy efficiency of the heating pump 10.

[0059] like Figure 3 The first tube portion 121 surrounds the second tube portion 122 and extends along the axial direction of the impeller 14. The edge of one end of the first tube portion 121 close to the impeller 14 is connected to the outer periphery of the end plate 123, and the edge of one end of the second tube portion 122 close to the impeller 14 is connected to the inner periphery of the end plate 123; the other end of the first tube portion 121 extends out of the other end of the second tube portion 122. The other end periphery of the first tube portion 121 is connected to a flange portion 124, and the flange portion 124 extends in a radial direction away from the second tube portion 122. The outer periphery of the flange portion 124 is provided with a first flange portion 111, and the first flange portion 111 is configured to extend in a direction away from the impeller 14.

[0060] In addition, the above different embodiments can be implemented separately, or multiple embodiments can be combined to form a new technical solution without conflict. The barrel in the present invention can also have other technical features.

[0061] In some examples, the end of the second barrel portion facing away from the impeller 14 can be set to not extend out of the first barrel portion, including but not limited to, the end of the second barrel portion 122 facing away from the impeller 14 is flush with the end of the first barrel portion; or, the end of the second barrel portion 122 facing away from the impeller 14 is shorter than the end of the first barrel portion.

[0062] In addition, in other examples, the end of the second barrel 122 away from the impeller 14 can also extend out of the first barrel. The length of the end of the second barrel 122 away from the impeller 14 extending out of the first barrel is L1, and the length of the second barrel 122 and the first barrel is L2, wherein the ratio L1 / L2 can be set to be greater than or equal to 0 and less than or equal to 1. For example, the ratio L1 / L2 can be set to 0, 0.05, 0.12, 0.25, 0.6 or 1. The function of heating the fluid by different types of heating components 15 can be met, and the second barrel 122 can be effectively shortened, which facilitates the miniaturization of the heating pump 10.

[0063] In some embodiments, the heating pump cavity 102 surrounds the first cylinder and can be configured to extend in the same direction as the first cylinder, wherein the first cylinder can be configured to extend along the axis of the heating pump 10 and the heating pump cavity 102 can also be configured to extend with the axis of the heating pump 10 .

[0064] The peripheral wall of the pump housing may be provided with a liquid outlet 104 of the heating pump 10, and the fluid may be delivered through the liquid outlet 104 after being processed. The length of the heating pump chamber 102 may be shortened, thereby reducing the size of the heating pump 10, and the fluid may be heated by the heating component 15 when passing through the heating pump chamber 102, so that the space in the flow channel may be fully utilized to heat the fluid, which not only eliminates other paths in the heating pump 10 that cannot be heated by the heating component 15, thereby achieving the purpose of reducing the size of the heating pump 10, but also avoids the heat loss in the heated fluid caused by the excessively long flow path in the heating pump 10, thereby saving energy and protecting the environment. In addition, in combination with the foregoing, the fluid may enter the heating pump 10 through the inlet, and be heated by the heating component 15 when flowing through the second barrel 122, and be heated by the heating component 15 when flowing through the heating pump chamber 102, and then be delivered through the outlet.

[0065] In combination with the above, the external piping element can be connected to the heating pump 10 through the inlet to pass the fluid into the heating pump 10; and the external piping element can be connected to the heating pump 10 through the outlet to lead the fluid out of the heating pump 10. The length of the second barrel 122 of the heating pump 10 and the length of the water outlet flow channel can be reduced, and the size of the heating pump 10 can be reduced to facilitate the miniaturization design of the heating pump 10. Moreover, when the fluid passes through the second barrel 122 and the heating pump cavity 102, the heating component 15 can be used to heat the fluid. The heating component 15 can be used to heat the fluid during the circulation process of the heating pump 10. While reducing the size of the heating pump 10, the fluid can be fully heated to improve the heating efficiency and effect.

[0066] Of course, in the present application, the end of the second barrel 122 away from the impeller can be configured as the inlet of the heating pump 10, and the peripheral wall of the pump shell can be configured as the outlet of the heating pump 10. In addition, in the present application, the inlet end of the second barrel 122 can also be connected to the first pipeline, and the liquid inlet 103 is set in the first pipeline; or the second pipeline is connected to the outer peripheral wall of the heating pump chamber 102, and the liquid outlet 104 is set in the second pipeline.

[0067] like Figure 1 In some embodiments, at least a portion of the liquid outlet 104 is opposite to the heating assembly 15 along the radial direction of the heat pump 10. This arrangement facilitates the fluid to be delivered through the heat pump cavity 102 in a shorter path, thereby further optimizing the miniaturized design of the heat pump 10 and optimizing the performance of the heat pump 10.

[0068] In addition, the cylinder and the pump casing 11 can be connected to the same side of the motor 13, and the pump casing 11 is arranged around the cylinder. The cylinder in the present application can be made of stainless steel, aluminum alloy, plastic, etc. The fluid can be heated through the inner and outer surfaces of the cylinder. By heating the cylinder, the structural shape of the impeller is matched to reduce the turbulence inside the pump, thereby ensuring that the efficiency of the pump is not affected by the heating components; on the other hand, due to the cylindrical structure, both sides can heat the water in the pump 10, thereby ensuring a higher heating efficiency. Through the cylinder heating method, the pump efficiency can be kept consistent with the existing pump efficiency; the heating efficiency is almost the same as the efficiency of the immersion heating pump 10, and it has good safety performance.

[0069] The dishwasher according to the embodiment of the present application includes the aforementioned heating pump 10. The motor 13 can be used to drive the fluid to circulate, and the heating component 15 is arranged on the barrel 12, so that the larger surface of the barrel 12 can be used to heat the fluid, thereby improving the heating efficiency. In addition, the heating component 15 is arranged on the barrel 12, so that the heating component 15 can be prevented from hindering the fluid circulation, thereby reducing the obstruction to the fluid, reducing the flow resistance, and improving the fluid circulation efficiency.

[0070] In addition, the dishwasher may include an inner tank, a water cup, a heating pump 10, and a spray arm, etc. The spray arm may be disposed in the inner tank, and the tableware placed in the inner tank may be cleaned by the spray arm, wherein the heating pump 10 may be configured to be connected to the water cup and the spray arm, so that the heating pump 10 is used to drive the fluid to flow to the spray arm and clean the tableware.

[0071] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A heating pump for a dishwasher, characterized in that: include: Pump housing; A cylinder, at least a part of which is disposed in the pump housing, a water inlet channel is disposed inside the cylinder, and a heating pump cavity is disposed between the cylinder and the pump housing; A motor, wherein the motor has a rotating shaft and is connected to the pump housing, and the rotating shaft extends into the heating pump cavity; An impeller, the impeller is disposed in the heating pump cavity and mounted on the rotating shaft, the impeller being opposite to the cylinder along the axial direction; A heating component is disposed in the cylinder and around the water inlet channel. The heating component is separated from the fluid in the heating pump and conducts heat.

2. The heating pump according to claim 1, characterized in that: The barrel includes a first barrel portion and a second barrel portion disposed inside the first barrel portion, a heating groove is formed between the first barrel portion and the second barrel portion, and the heating component is disposed in the heating groove.

3. The heating pump according to claim 2, characterized in that: The cylinder body also includes a first flow guide cover adapted to the shape of the impeller. The first flow guide cover is arranged outside the impeller and connects the first cylinder part and the second cylinder part. The first cylinder part, the first flow guide cover and the first cylinder part are connected to form the heating tank.

4. The heating pump according to claim 3, characterized in that: The inner diameter of the first cylinder is larger than the outer diameter of the second cylinder, and the end of the first cylinder close to the impeller extends out of the second cylinder, and the first flow guide cover is configured to be inclined toward the impeller in a direction from the first cylinder to the second cylinder; And / or, the end edge of the first tube portion close to the impeller is connected to the outer periphery of the first air guide cover, and the end edge of the second tube portion close to the impeller is connected to the inner periphery of the first air guide cover; And / or, the first cylinder portion, the second cylinder portion and the first air guide cover are configured as an integrated structure.

5. The heating pump according to claim 2, characterized in that: The cylinder also includes an end plate, which is connected to one end of the first cylinder portion close to the impeller and one end of the second cylinder portion close to the impeller. The first cylinder portion, the end plate and the first cylinder portion are connected to form the heating tank.

6. The heating pump according to claim 2, characterized in that: The heating pump also includes: The second flow guide cover is arranged on the outer side of the impeller and is configured to adapt to the shape of the impeller. The second flow guide cover is located between the impeller and the cylinder. The second flow guide cover is provided with an axial interface, and the axial interface is connected to the fluid of the water inlet channel.

7. The heating pump according to claim 6, characterized in that: The heating pump also includes: A flow guide tube is connected to the axial interface of the second flow guide cover, the water inlet channel is formed on the inner side of the flow guide tube, the flow guide tube is penetrated in the second cylinder part, and the heating component is indirectly arranged around the flow guide tube.

8. The heating pump according to claim 7, characterized in that: The inner diameter of the axial interface is larger than the inner diameter of the guide tube, and a step structure is formed between the second cylinder guide cover and the guide tube.

9. The heating pump according to claim 7, characterized in that: The end of the guide tube away from the second guide cover is configured as the inlet of the water inlet channel; or, the end of the guide tube away from the second guide cover extends out of the cylinder body; or, the end of the guide tube away from the second guide cover does not extend out of the cylinder body, and is connected to the end of the second guide cover through a heating pump water inlet pipe.

10. The heating pump according to claim 6, characterized in that: In the projection along the axis of the pump casing, the cylinder falls into the second flow guide cover.

11. The heat pump according to claim 2, characterized in that: The cylinder body further includes a flange portion, which is connected to an end of the first cylinder portion away from the impeller and extends radially outward and connected to the pump housing. Wherein, the pump housing comprises a first flanging portion, and the flange portion is connected to the first flanging portion in a stacked manner; and / or, a second flanging portion is provided on the outer periphery of the flange portion.

12. A dishwasher, characterized in that: A heating pump comprising the heating pump described in any one of claims 1-11.

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