Heating pump and dish washing machine

Abstract

The utility model discloses a heating pump and a dish-washing machine, and relates to the technical field of kitchen heating household appliances, the heating pump comprises a pump shell and a heating assembly, one end of the pump shell is provided with a mounting port, and the side part of the pump shell is provided with a water outlet; the heating assembly comprises an annular heat conduction cover and a heating piece arranged on the annular heat conduction cover, the annular heat conduction cover is arranged on the installation opening in a covering mode so that a cavity can be defined by the annular heat conduction cover and the pump shell, and a heat conduction part extending into the cavity is arranged at the bottom of the annular heat conduction cover. The heat conduction part is arranged at the bottom of the annular heat conduction cover, the heat exchange area with water in the cavity can be increased, the heat conduction part is closer to water flow, the flowing water can be directly heated, the heating efficiency is improved, the pump shell does not participate in heat conduction, the pump shell can be made of a low-cost material, and the heat conduction effect is good. According to the heating pump, the cost can be reduced, and meanwhile the heating efficiency can be improved.

Description

Technical Field

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

[0002] Integrated heated dishwasher pump technology has been around for some time. Currently, most products on the market utilize submerged stainless steel heating elements, often combined with a plastic pump housing or a semi-plastic, semi-stainless steel pump cover. In recent years, cast aluminum has also begun to be used in dishwasher pump designs, with some even featuring entire pumps constructed from cast aluminum with the heating element embedded within.

[0003] While this all-cast aluminum design appears to increase the heat exchange surface area in contact with the water, it's not always effective from a heat exchange efficiency perspective. The heating element is often located at the top of the pump, while the water outlet and lower sidewalls reach temperatures close to those of the water flowing through them during operation, meaning these areas don't effectively participate in the heat transfer process. Therefore, this additional cast aluminum material actually adds unnecessary cost. Furthermore, the water outlet of the cast aluminum pump casing is susceptible to erosion by impurities such as sand and gravel, which can cause the protective layer to fall off, accelerating the corrosion of the cast aluminum components. Utility Model Content

[0004] The main purpose of the present invention is to provide a heating pump and a dishwasher, aiming to provide a heating pump that can reduce costs while improving heating efficiency.

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

[0006] A pump housing, one end of which is provided with a mounting port, and a side portion of the pump housing is provided with a water outlet; and

[0007] The heating assembly includes an annular heat-conducting cover and a heating element arranged on the annular heat-conducting cover. The annular heat-conducting cover is arranged on the mounting port to form a cavity together with the pump casing. The bottom of the annular heat-conducting cover is provided with a heat-conducting portion extending into the cavity.

[0008] In one embodiment, the heat conducting portion includes a rib protruding from the bottom of the annular heat conducting cover.

[0009] In one embodiment, the rib is extended along the circumference of the annular heat-conducting cover.

[0010] In one embodiment, the convex rib is arranged in a semi-annular shape to form a avoidance opening corresponding to the water outlet between two ends of the convex rib in the circumferential direction.

[0011] In one embodiment, the heat generating element is extended along the circumference of the annular heat conductive cover.

[0012] In one embodiment, the heating element extends in a spiral shape, and the central angle corresponding to the heating element is greater than 360°, and the heating element is formed with a plurality of heating segments arranged in an inner and outer space in the area corresponding to the arrangement of the ribs.

[0013] In one embodiment, the annular heat-conducting cover is integrally provided with the heat-conducting portion; and / or,

[0014] The annular heat-conducting cover is a metal annular heat-conducting cover; and / or the pump housing is a plastic pump housing.

[0015] In one embodiment, the heating element includes a heating body and two power connection ends correspondingly arranged on the heating body, the heating body extends along the circumference of the annular heat conductive cover, and the two power connection ends are at least partially located outside the annular heat conductive cover.

[0016] In one embodiment, the heating body is embedded in the annular heat-conducting cover.

[0017] The utility model further provides a dishwasher, comprising a heating pump, wherein the heating pump comprises:

[0018] A pump housing, one end of which is provided with a mounting port, and a side portion of the pump housing is provided with a water outlet; and

[0019] The heating assembly includes an annular heat-conducting cover and a heating element arranged on the annular heat-conducting cover. The annular heat-conducting cover is arranged on the mounting port to form a cavity together with the pump casing. The bottom of the annular heat-conducting cover is provided with a heat-conducting portion extending into the cavity.

[0020] In the technical solution of the present invention, the heating element is arranged on the annular heat-conducting cover, and the heating element can transfer heat to the annular heat-conducting cover, and the annular heat-conducting cover can heat the water in the cavity. In addition, the heat-conducting portion is connected to the annular heat-conducting cover and extends into the cavity. The heat-conducting portion can conduct the heat on the annular heat-conducting cover to the water in the cavity to heat it. By arranging the heat-conducting portion at the bottom of the annular heat-conducting cover, the heat exchange area with the water in the cavity can be increased, and the heat-conducting portion is closer to the water flow, and can directly heat the water flowing through, thereby improving the heating efficiency. The pump casing does not participate in heat conduction and can be made of a lower-cost material to provide a heating pump that can reduce costs while improving heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of an embodiment of a heating pump provided by the present utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view of the heat pump;

[0024] Figure 3 for Figure 1 Schematic diagram of the structure of the heating component;

[0025] Figure 4 for Figure 3 A schematic structural diagram of the heating component from another perspective;

[0026] Figure 5 for Figure 4 A schematic cross-sectional view of the heating assembly;

[0027] Figure 6 for Figure 4 a cross-sectional view of the heating assembly;

[0028] Figure 7 for Figure 2 Schematic diagram of the structure of the heating element;

[0029] Figure 8 for Figure 1 Schematic top view of the heating component.

[0030] Description of Figure Numbers:

[0031] 100. Heating pump; 1. Pump housing; a. Mounting port; b. Water outlet; 2. Heating assembly; 21. Annular heat-conducting cover; 22. Heating element; 220. Heating section; 221. Heating body; 222. Power connection terminal; 23. Heat-conducting portion; 231. Rib; c. Avoidance port.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), 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.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. 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 mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] In recent years, cast aluminum has also begun to be used in the design of dishwasher pumps. There are even products in which the entire pump body is made of cast aluminum and the heating element is embedded in it. Although this all-cast aluminum design appears to increase the heat exchange area in contact with water, in fact, from the perspective of heat exchange efficiency, this is not always effective. Because the heating element is often located at the top of the pump, and the water outlet and the lower half of the side wall of the pump have a temperature close to the temperature of the water flowing through during operation, this means that these areas do not effectively participate in the heat transfer process. Therefore, this part of additional cast aluminum material actually increases unnecessary costs. In addition, since the water outlet position of the cast aluminum pump casing is easily corroded by impurities such as sand and gravel, it may cause the protective layer to fall off, thereby accelerating the corrosion rate of the cast aluminum parts.

[0037] The utility model proposes a heating pump, aiming to provide a heating pump that can reduce costs and improve heating efficiency.

[0038] See also Figures 1 to 4In one embodiment of the present utility model, the heating pump 100 includes a pump housing 1 and a heating component 2, wherein the pump housing 1 is provided with a mounting port a at one end, and a water outlet b is provided on the side of the pump housing 1; the heating component 2 includes an annular heat-conducting cover 21, and a heating element 22 provided on the annular heat-conducting cover 21, the annular heat-conducting cover 21 is covered on the mounting port a to enclose the pump housing 1 to form a cavity, and the bottom of the annular heat-conducting cover 21 is provided with a heat-conducting portion 23 extending into the cavity.

[0039] One end of the pump housing 1 is provided with a mounting opening a for mounting the heating assembly 2. A water outlet b is provided on the side of the pump housing 1 for discharging heated water. The annular heat-conducting cover 21 is mounted over the mounting opening a of the pump housing 1, and together with the pump housing 1, forms a cavity with a water inlet formed in the center. The heat-conducting portion 23 extends from the annular heat-conducting cover 21 into the cavity, entering the interior of the pump housing 1.

[0040] It can be understood that the heating element 22 is arranged on the annular heat-conducting cover 21. The heating element 22 can be installed on the outside of the annular heat-conducting cover 21 and directly contact the water in the cavity. At the same time, the heating element 22 transfers heat to the annular heat-conducting cover 21 and the heat-conducting part 23, so that the annular heat-conducting cover 21, the heating element 22 and the heat-conducting part 23 are heated together, thereby increasing the heating surface.

[0041] The heating element 22 can also be arranged inside the annular heat-conducting cover 21. The annular heat-conducting cover 21 and the heat-conducting part 23 are both set to high heat-conducting materials. When the heating element 22 is working, the annular heat-conducting cover 21 can transfer heat to the heat-conducting part 23. In addition to the annular heat-conducting cover 21 being able to achieve heating, the heat-conducting part 23 can also exchange heat to achieve heating. The heat exchange area with the water in the cavity is increased, which makes the efficiency of heating the water in the cavity higher and achieves rapid heating.

[0042] The heating element 22 can be a heating tube or a heating wire, and can be specifically designed according to actual conditions, which is not limited in the embodiments of this specification.

[0043] It should also be noted that the pump housing 1 and the annular heat-conducting cover 21 are separately provided, so the material of the annular heat-conducting cover 21 can be the same as or different from the material of the pump housing 1. In order to make the annular heat-conducting cover 21 have high thermal conductivity efficiency, it can be set to a high thermal conductivity material, such as copper, aluminum, etc. In order to reduce costs, the pump housing 1 can use cheaper materials such as plastic.

[0044] In the technical solution of the present invention, the heating element 22 is arranged on the annular heat-conducting cover 21. The heating element 22 can transfer heat to the annular heat-conducting cover 21, and the annular heat-conducting cover 21 can heat the water in the cavity. In addition, the heat-conducting portion 23 is connected to the annular heat-conducting cover 21 and extends into the cavity. The heat-conducting portion 23 can conduct the heat on the annular heat-conducting cover 21 to the water in the cavity to heat it. By arranging the heat-conducting portion 23 at the bottom of the annular heat-conducting cover 21, the heat exchange area with the water in the cavity can be increased, and the heat-conducting portion 23 is closer to the water flow, and can directly heat the water flowing through, thereby improving the heating efficiency. The pump housing 1 does not participate in heat conduction and can be made of lower-cost materials to provide a heating pump 100 that can reduce costs while improving heating efficiency.

[0045] Specifically, see Figure 4 In this embodiment, the heat conducting portion 23 includes a rib 231 protruding from the bottom of the annular heat conducting cover 21 .

[0046] By providing ribs 231 at the bottom of the annular heat-conducting cover 21, the contact area between the heat-conducting material and the water is increased. More heat can be transferred directly from the annular heat-conducting cover 21 and the ribs 231 to the water flow, thereby improving heat exchange efficiency. Although the overall amount of cast aluminum material used is increased, the rational layout of the ribs 231 ensures that the increased area is primarily concentrated in the areas that actually participate in effective heat exchange. This ensures good heat conduction while avoiding the problem of ineffective heat exchange areas mentioned in related art.

[0047] It should also be noted that the structure of the rib 231 can be relatively easily implemented during the manufacturing process through processes such as mold forming. This not only simplifies the production process but also potentially reduces costs. Furthermore, a suitable rib 231 structure can also help reduce weight and further save materials.

[0048] For further information, please refer to Figure 4 In this embodiment, the rib 231 is extended along the circumference of the annular heat-conducting cover 21 .

[0049] The ribs 231 are extended along the circumference of the pump housing 1 so that they can contact more water flow, improving heating efficiency. Furthermore, the ribs 231 are distributed along the circumference, ensuring that the water flow is evenly heated in all directions within the cavity, avoiding localized overheating or uneven heating, and fully utilizing the circumferential space within the pump housing 1.

[0050] Furthermore, since the water outlet is provided on the side of the pump housing 1 and the rib 231 extends downward from the annular heat-conducting cover 21, especially when the rib 231 is close to the water outlet b, the discharge of the water flow is blocked. Therefore, please continue to refer to Figure 4 In this embodiment, the rib 231 is arranged in a semi-circular shape to form an avoidance opening c corresponding to the water outlet b between the two ends of the rib 231 in the circumferential direction.

[0051] The position of the avoidance opening c corresponds to the water outlet b, ensuring that water can flow out through the water outlet b without obstruction. By setting the avoidance opening c, the water flow path from the heating area to the water outlet b can be ensured to be smoother, reducing resistance and improving water flow efficiency.

[0052] Further, see Figures 5 to 7 In this embodiment, the heat generating element 22 is extended along the circumference of the annular heat conductive cover 21 .

[0053] It is understandable that the heating element 22 extends circumferentially, and the heating element 22 is not concentrated in a certain point or area, but is evenly distributed along the edge of the annular heat-conducting cover 21. In this way, the heating element 22 can cover the annular heat-conducting cover 21 more evenly, thereby ensuring that heat can be more evenly transferred to the water flow passing through the annular heat-conducting cover 21, avoiding the occurrence of local overheating or cold areas, and ensuring that the water temperature remains consistent throughout the flow area. In addition, the circumferential layout of the heating element 22 increases the effective area in contact with the heat-conducting cover, thereby improving the heat exchange efficiency. More heat can be quickly transferred from the heating element 22 to the water, shortening the heating time and reducing energy consumption.

[0054] For further information, please refer to Figures 5 to 7 In this embodiment, the heating element 22 extends in a spiral shape, and the central angle corresponding to the heating element 22 is greater than 360°, and the heating element 22 has a plurality of heating sections 220 arranged in an inner and outer spaced relationship in the area corresponding to the arrangement of the ribs 231.

[0055] The heating element 22 is arranged in a spiral form, and its total length covers a range of more than one circle (i.e., the central angle of the circle is greater than 360 degrees). At the position corresponding to the rib 231, the heating element 22 is divided into multiple pipe segments, and at least some of the multiple pipe segments are arranged at intervals in the radial direction.

[0056] In the area where the pipe section density is relatively high, it is distributed at a position with a large heat exchange area corresponding to the rib 231, ensuring that the area with a large heat exchange area and a large heat exchange demand can be heated more fully.

[0057] Because the heating element 22 is arranged on the annular heat-conducting cover 21, the heat of the heating element 22 needs to be transferred to the heat-conducting portion 23 in addition to the annular heat-conducting cover 21. The heat-conducting portion 23 and the annular heat-conducting cover 21 together serve as heating components to heat the water in the cavity. That is to say, in addition to the heat-conducting portion 23 being able to heat the water in the cavity in the circumferential direction, the annular heat-conducting cover 21 also heats the top of the water in the cavity.

[0058] In other embodiments, the heating element 22 may also be configured in an S-shape, with the side of the heating element 22 having more bending sections corresponding to the rib 231. Of course, the form of the heating element 22 is not limited to the above example. Persons skilled in the art may make other changes based on the technical essence of the embodiments of this specification. However, as long as the functions and effects achieved are the same or similar to those of the embodiments of this specification, they shall be covered within the scope of protection of the embodiments of this specification.

[0059] Furthermore, in order to make the thermal conductivity better and the molding more convenient, please refer to Figure 4 In this embodiment, the annular heat-conducting cover 21 and the heat-conducting portion 23 are integrally provided.

[0060] In this way, the annular heat-conducting cover 21 and the heat-conducting portion 23 are integrally provided to avoid forming a joint surface or interface between the annular heat-conducting cover 21 and the heat-conducting portion 23 , thereby reducing thermal resistance during heat transfer and improving overall heat conduction efficiency.

[0061] The integrated design can be achieved through casting, forging, or other one-step molding processes, which not only simplifies the production process, but also reduces assembly steps, lowers manufacturing costs, and provides better mechanical strength. At the same time, it reduces the number of parts that require separate processing and assembly, further improving production efficiency.

[0062] Furthermore, in this embodiment, the annular heat-conducting cover 21 is a metal annular heat-conducting cover 21; and / or the pump housing 1 is a plastic pump housing 1.

[0063] It should be noted that the annular heat-conducting cover 21 is a metal annular heat-conducting cover 21, and is made of a metal material such as copper or aluminum. Because metal materials have excellent thermal conductivity, they can quickly transfer the heat generated by the heating element 22 to the water flow, improving heating efficiency. Metal materials also have excellent high-temperature resistance and high structural strength, and can withstand high pressure and impact, ensuring the stability and safety of the heating assembly 2.

[0064] The pump housing 1 is a plastic pump housing 1, and the pump housing 1 is made of a plastic material such as polypropylene (PP) or polycarbonate (PC). The cost of such a plastic material is low, which can effectively reduce the manufacturing cost of the heat pump 100. The plastic material is relatively light, which helps to reduce the weight of the entire device and facilitates installation and transportation. The plastic material has good corrosion resistance and can resist erosion by water and detergents, thereby extending the service life of the pump housing 1.

[0065] By configuring the annular heat-conducting cover 21 as a metal annular heat-conducting cover 21, the high thermal conductivity of the metal annular heat-conducting cover 21 ensures that heat can be quickly transferred to the water flow, thereby improving heating efficiency. The low-cost material selection of the plastic pump housing 1 reduces the manufacturing cost of the heating pump 100 and improves the market competitiveness of the product. The lightweight characteristics of the plastic pump housing 1 make the entire device lighter and easier to install and use. The high temperature resistance of the metal annular heat-conducting cover 21 and the corrosion resistance of the plastic pump housing 1 ensure the stability and reliability of the heating pump 100 in various working environments.

[0066] Specifically, see Figure 1 、 Figure 3 、 Figure 7 and Figure 8 In this embodiment, the heating element 22 includes a heating body 221 and two power connection ends 222 correspondingly arranged on the heating body 221. The heating body 221 extends along the circumference of the annular heat-conducting cover 21, and the two power connection ends 222 are at least partially located outside the annular heat-conducting cover 21.

[0067] It should be noted that the heating body 221 is the main part of the heating element 22 and is used to generate heat. The heating body 221 is usually made of a material with good thermal conductivity.

[0068] The two power terminals 222 are the parts where the heating body 221 is connected to an external power source, and are used to supply power to the heating body 221 to generate heat. The power terminals 222 may be plugs, contacts or other types of electrical interfaces.

[0069] The heating body 221 is arranged around the pump housing 1 to provide a uniform heating effect. By locating the power connection 222 outside the annular heat-conducting cover 21, it is convenient to connect to the power supply to effectively control the temperature of the fluid in the pump while ensuring electrical safety and easy maintenance.

[0070] Further, see Figure 4 and Figure 6 In this embodiment, the heating body 221 is embedded in the annular heat-conducting cover 21 .

[0071] The heating body 221 is directly embedded in the annular heat-conducting cover 21. The heating body 221 is in closer contact with the annular heat-conducting cover 21, reducing heat loss and ensuring that heat is quickly and evenly transferred to the interior of the cavity, helping to maintain the desired temperature. At the same time, the heating element is completely enclosed in the annular heat-conducting cover 21, reducing the possibility of electrical components being exposed to the outside, improving overall safety, and reducing the risk of accidental contact. In addition, if the heating body 221 is exposed to water for a long time, it is prone to corrosion and damage. Avoiding direct water corrosion ensures the service life of the heating pump 100.

[0072] The present invention also provides a dishwasher, which includes a dishwasher sink and a heating pump 100. The specific structure of the heating pump 100 refers to the above embodiment. Since the present dishwasher adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described one by one here.

[0073] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application 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 A pump housing, one end of which is provided with a mounting port, and a side portion of the pump housing is provided with a water outlet; as well as, The heating assembly includes an annular heat-conducting cover and a heating element arranged on the annular heat-conducting cover. The annular heat-conducting cover is arranged on the mounting port to form a cavity together with the pump casing. The bottom of the annular heat-conducting cover is provided with a heat-conducting portion extending into the cavity.

2. The heat pump according to claim 1, wherein The heat conducting portion includes a convex rib protruding from the bottom of the annular heat conducting cover.

3. The heat pump according to claim 2, wherein: The ribs are extended along the circumference of the annular heat-conducting cover.

4. The heat pump according to claim 3, wherein The convex rib is arranged in a semi-circular shape to form a avoidance opening corresponding to the water outlet between the two ends of the convex rib in the circumferential direction.

5. The heat pump according to claim 4, wherein The heat generating element is extended along the circumference of the annular heat conducting cover.

6. The heat pump according to claim 5, wherein The heating element extends in a spiral shape, and the central angle corresponding to the heating element is greater than 360 degrees. The heating element is provided with a plurality of heating sections arranged in an inner and outer space in an area corresponding to the arrangement of the convex ribs.

7. The heat pump according to claim 1, wherein The annular heat-conducting cover is integrally provided with the heat-conducting portion; and / or, The annular heat-conducting cover is a metal annular heat-conducting cover; and / or the pump housing is a plastic pump housing.

8. The heat pump according to claim 1, wherein The heating element includes a heating body and two power connection ends correspondingly arranged on the heating body. The heating body extends along the circumference of the annular heat-conducting cover, and the two power connection ends are at least partially located outside the annular heat-conducting cover.

9. The heat pump according to claim 8, wherein The heating body is embedded in the annular heat-conducting cover.

10. A dishwasher, characterized in that: Comprising the heat pump according to any one of claims 1 to 9.

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