Heating pump and dish washing machine

Abstract

The utility model discloses a heating pump and dish-washing machine relates to kitchen heating electric appliance technical field, wherein the heating pump includes pump casing, annular end cover and heating element, the one end of pump casing is equipped with the mounting mouth that the annular end cover installs, annular end cover and pump casing enclose and form the impeller chamber, the heating element is installed in the annular end cover, the heating element includes the heating main part, and the heating main part is equipped with the impeller chamber. The heating main body comprises a plurality of heating sections and a connecting section, the plurality of heating sections are arranged in parallel, extend in the circumferential direction of the annular end cover and can uniformly heat water flowing through the impeller cavity in the circumferential direction, one ends of every two adjacent heating sections are connected through the connecting section, the connecting section is arranged corresponding to the water outlet, and the connecting section has a large heating area; and the heat is ensured to be quickly transferred to quickly flowing water, and even if the water stays in the pump cavity for a short time, the water can be effectively heated to the required temperature, so that the heating efficiency is 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] During operation, the pump in an automatic dishwasher not only drives the water to clean dishes but also heats the water within the pump chamber, enhancing cleaning efficiency and providing significant convenience to the user. When the machine is running, the motor rotates the impeller, causing the water to circulate; simultaneously, a built-in heating element heats the water within the pump chamber.

[0003] However, ensuring that the heat generated by the heating element can be quickly transferred to the flowing water and maintain efficient heating performance at high water flow rates is a technical challenge that requires special attention. Specifically, how to achieve instant heat transfer while ensuring smooth and rapid water flow to maintain ideal cleaning temperature and efficiency. Utility Model Content

[0004] The main purpose of the utility model is to provide a heating pump and a dishwasher, aiming to provide a heating pump that can maintain efficient heating performance and maintain ideal cleaning temperature and 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 the pump housing is also provided with a water outlet;

[0007] an annular end cover, mounted on the mounting opening to enclose the pump casing and form an impeller cavity, wherein the middle portion of the annular end cover forms a water inlet; and

[0008] A heating element is installed on the inner side of the annular end cover, and the heating element includes a heating body, and the heating body includes multiple heating segments and a connecting segment. The multiple heating segments are arranged in parallel and extend along the circumference of the annular end cover. One end of two adjacent heating segments is connected by the connecting segment, and the connecting segment is arranged corresponding to the water outlet.

[0009] In one embodiment, the central angle corresponding to the two ends of the connecting segment is greater than 180°.

[0010] In one embodiment, the central angle corresponding to the heating element is greater than 180°.

[0011] In one embodiment, the heating pump further comprises a temperature control device, and the temperature control device is disposed on the annular end cover;

[0012] The annular end cover is provided with a through hole;

[0013] The end of the heating element passes through the through hole outward to be connected to the temperature control device.

[0014] In one embodiment, the heating element is welded to the hole wall of the via hole.

[0015] In one embodiment, the heating element further includes two power terminals correspondingly arranged on the heating body;

[0016] The heating pump further comprises two conductive rods, each conductive rod being connected to the corresponding power connection terminal and the temperature control device.

[0017] In one embodiment, the temperature control device is screwed or riveted to the annular end cover.

[0018] In one embodiment, a clamping portion is provided on the annular end cover, and a fitting portion for the clamping portion to engage with is provided on the pump housing; and / or,

[0019] The heating pump further comprises a sealing ring which is arranged between the annular end cover and the pump housing.

[0020] In one embodiment, the heating pump further comprises a water inlet assembly, wherein the water inlet assembly comprises:

[0021] an expansion sleeve, disposed in the impeller chamber, wherein the upper end of the expansion sleeve extends to the water inlet; and

[0022] A water inlet pipe, the lower end of which is arranged at the water inlet and is clamped between the expansion sleeve and the annular end cover.

[0023] The utility model further provides a dishwasher, comprising a heating pump, wherein the heating pump comprises:

[0024] A pump housing, one end of which is provided with a mounting port, and the pump housing is also provided with a water outlet;

[0025] an annular end cover, mounted on the mounting opening to enclose the pump casing and form an impeller cavity, wherein the middle portion of the annular end cover forms a water inlet; and

[0026] A heating element is installed on the inner side of the annular end cover, and the heating element includes a heating body, and the heating body includes multiple heating segments and a connecting segment. The multiple heating segments are arranged in parallel and extend along the circumference of the annular end cover. One end of two adjacent heating segments is connected by the connecting segment, and the connecting segment is arranged corresponding to the water outlet.

[0027] In the technical solution of the present utility model, the heating element is arranged in the impeller cavity, and the heating section included in the heating body of the heating element extends along the circumference of the annular end cover, which can evenly heat the water flowing through the impeller cavity in the circumferential direction. The heating sections are provided in plurality and arranged in parallel, so that the heating area is larger and the heat exchange efficiency is higher, and the connecting section is provided corresponding to the water outlet with a higher water flow rate. The connecting section has a larger heating area, ensuring that heat is quickly transferred to the fast-flowing water. Even if the water stays in the pump cavity for a short time, it can be effectively heated to the required temperature, thereby improving the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 A cross-sectional schematic diagram of an embodiment of a heating pump provided by the present utility model;

[0030] Figure 2 for Figure 1 Schematic cross section of the heat pump;

[0031] Figure 3 for Figure 1 Schematic diagram of the structure of the middle annular end cover;

[0032] Figure 4 for Figure 1 Schematic diagram of the structure of the heating element;

[0033] Figure 5 for Figure 1 Schematic cross-sectional view of part of the structure of the heating pump.

[0034] Description of Figure Numbers:

[0035] 100. Heating pump; 1. Pump housing; a. Water outlet; b. Impeller chamber; 11. Fitting part; 2. Annular end cover; 2a. Water inlet; 2b. Through hole; 21. Clamping part; 3. Heating element; 31. Heating body; 311. Heating section; 312. Connecting section; 32. Power terminal; 4. Temperature control device; 5. Conductive rod; 6. Sealing ring; 7. Expansion sleeve; 8. Water inlet pipe.

[0036] 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

[0037] 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.

[0038] 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.

[0039] 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.

[0040] During operation, the pump in an automatic dishwasher not only drives the water flow to clean dishes, but also heats the water in the pump chamber, enhancing cleaning efficiency and providing significant convenience for the user. When the machine is running, the motor rotates the impeller, causing the water to circulate; simultaneously, the built-in heating element heats the water in the pump chamber. However, at high water flow rates, ensuring that the heat generated by the heating element is quickly transferred to the flowing water while maintaining efficient heating performance is a technical challenge that requires special attention. Specifically, the challenge is to ensure smooth and rapid water flow while achieving instant heat transfer to maintain ideal cleaning temperature and efficiency.

[0041] The present invention proposes a heating pump 100 , which aims to provide a heating pump capable of maintaining efficient heating performance and maintaining ideal cleaning temperature and efficiency.

[0042] See also Figures 1 to 4In one embodiment of the present utility model, the heating pump 100 includes a pump casing 1, an annular end cover 2 and a heating element 3. One end of the pump casing 1 is provided with a mounting port, and the pump casing 1 is also provided with a water outlet a; the annular end cover 2 is installed at the mounting port to enclose with the pump casing 1 to form an impeller chamber b, and the middle part of the annular end cover 2 forms a water inlet 2a; the heating element 3 is installed on the inner side of the annular end cover 2, and the heating element 3 includes a heating body 31, and the heating body 31 includes a plurality of heating sections 311 and a connecting section 312. The plurality of heating sections 311 are arranged in parallel and extend along the circumference of the annular end cover 2. One end of two adjacent heating sections 311 is connected by the connecting section 312, and the connecting section 312 is arranged corresponding to the water outlet a.

[0043] It should be noted that the pump housing 1 is the outer shell of the heat pump 100, housing internal components (such as the motor and impeller) and providing a fluid channel. A mounting port is provided at one end of the pump housing 1 to facilitate installation of the internal components within the cavity. This mounting port is used to mount the annular end cap 2. The pump housing 1 also has a water outlet a for discharging heated water.

[0044] The annular end cap 2 is mounted on the mounting opening of the pump housing 1 and, together with the pump housing 1, forms the impeller chamber b, which is the core area for liquid flow and heating. A water inlet 2a is provided in the middle of the annular end cap 2, communicating with the water inlet assembly to allow cold water to enter the impeller chamber b.

[0045] The heating element 3 is installed on the inner side of the annular end cover 2 and is used to heat the water entering the impeller chamber b. The heating body 31 of the heating element 3 is composed of the plurality of heating sections 311 and the connecting section 312.

[0046] The multiple heating segments 311 are arranged in parallel and extend along the circumference of the annular end cap 2. One end of two adjacent heating segments 311 is connected by a connecting segment 312 to form a continuous heating body. The connecting segment 312 ensures electrical connection between the heating segments 311 and corresponds to the water outlet a.

[0047] It should also be noted that the water flow rate near the water outlet a is relatively high, and the connecting section 312 is close to the water outlet a. The connecting section 312 has a large heat exchange area, which can ensure that heat is quickly transferred to the fast-flowing water, further improving the heat exchange efficiency of this area.

[0048] The shape of the connecting section 312 can be set to a semi-arc shape, a U shape, or other curved shapes. Of course, the form of the connecting section 312 is not limited to the above examples. Technicians in the relevant field 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 should be covered within the protection scope of the embodiments of this specification.

[0049] In the technical solution of the present invention, the heating element 3 is arranged in the impeller chamber b, and the heating section 311 included in the heating body 31 of the heating element 3 extends along the circumference of the annular end cover 2, and can uniformly heat the water flowing through the impeller chamber b in the circumferential direction. The heating sections 311 are provided in plurality and arranged in parallel, so that the heating area is larger and the heat exchange efficiency is higher, and the connecting section 312 is provided corresponding to the water outlet a with a higher water flow rate. The connecting section 312 has a larger heating area, ensuring that heat is quickly transferred to the fast-flowing water. Even if the water stays in the pump chamber for a short time, it can be effectively heated to the required temperature, thereby improving the heating efficiency.

[0050] Further, see Figure 2 and Figure 4 In this embodiment, the central angles corresponding to the two ends of the connecting section 312 are greater than 180°.

[0051] The central angles corresponding to the two ends of the connecting section 312 are greater than 180°, indicating that the connecting section 312 is designed to be larger than a semicircular arc. Compared with a small semicircular arc or a straight line segment, it can provide a larger surface area, that is, the contact area between the heating element 3 and the water flow is significantly increased.

[0052] When the water flow speed near the water outlet a is faster, more water molecules can contact the heating surface at the same time, which not only speeds up the heating speed, but also improves the heat conduction efficiency. The large surface area can ensure that sufficient heat is transferred to the water even in a short time, thereby improving the heating efficiency, reducing the heating time, and enabling the dishwasher to reach the required operating temperature faster.

[0053] Further, see Figure 4 In this embodiment, the central angle corresponding to the heating element 3 is greater than 180°.

[0054] Thus, designing the heating element 3 to cover more than a semicircular arc (i.e., a central angle greater than 180°) can significantly increase the effective heating area of ​​the heating element compared to designs that only cover a semicircle or a smaller angle. This allows more water to contact the heating surface, thereby improving the overall heating capacity.

[0055] Because the heating element 3 extends circumferentially along the annular end cap 2 and its central angle is greater than 180°, the coverage area of ​​the heating element 3 is expanded, reducing the "cold zone" in the pump cavity and ensuring a more even distribution of heat within the pump cavity. Even with high water flow rates, the outflowing water temperature can be kept consistent, avoiding local overheating or temperature unevenness.

[0056] Further, see Figure 1 and Figure 5 In this embodiment, the heating pump 100 also includes a temperature control device 4, which is arranged on the annular end cover 2; a through hole 2b is provided on the annular end cover 2; the end of the heating element 3 is passed outward from the through hole 2b to be connected to the temperature control device 4.

[0057] The temperature control device 4 can be a thermostat or a protector. The thermostat is a device used to monitor and adjust the temperature of the device. It automatically controls the operating state of the heat pump 100 according to a set temperature range to ensure that the device operates within a safe and efficient temperature range. The protector is used to prevent the heat pump 100 from overheating or other abnormal conditions. It monitors the temperature of the device and cuts off the power supply or issues an alarm when the temperature exceeds a safe threshold, thereby protecting the device and its surrounding environment.

[0058] The through hole 2b is opened on the annular end cover 2, so that a part of the heating element 3 can pass through the annular end cover 2 and be directly connected to the temperature control device 4, so that the temperature control device 4 can obtain the working status and temperature changes of the heating element 3 in real time, and thus perform corresponding adjustments and controls.

[0059] By integrating the temperature control device 4 into the heating pump 100, real-time monitoring of the water temperature can be achieved, thereby improving the accuracy of the heating effect. The temperature control device 4 is arranged on the annular end cover 2, that is, at the highest point of the water level, so that the temperature control device 4 can be closer to the heating element, facilitating real-time monitoring of the heating effect and water temperature. In addition, when the heating pump 100 fails and the amount of water in the impeller chamber b is insufficient, the top of the impeller chamber b is in a dry-burning state, and the temperature rises very quickly, so that the temperature control device 4 can sensitively monitor the failure of the heating pump 100 and remind you to take corresponding measures.

[0060] Specifically, see Figure 3 and Figure 5 In this embodiment, the heating element 3 is welded to the hole wall of the via hole 2b.

[0061] By welding the heating element 3 to the hole wall of the through hole 2b, strength support is provided, the device has high durability, can withstand temperature changes and pressure fluctuations during the heating process, can maintain a stable connection during long-term use, reduces the frequency of maintenance and replacement, and extends the service life of the heating pump 100.

[0062] The high tightness of the welds can prevent cold or hot water from leaking through the joints, effectively eliminating potential water leakage problems and maintaining the system's tightness. Good tightness can ensure effective circulation of the fluid inside the heat pump 100, avoiding heat loss and thus improving overall heating efficiency.

[0063] Further, see Figure 5 In this embodiment, the heating element 3 also includes two power terminals 32 correspondingly arranged on the heating body 31; the heating pump 100 also includes two conductive rods 5, each of which is connected to the corresponding power terminal 32 and the temperature control device 4.

[0064] The power connection 32 is the connection point between the heating element 3 and the power source. Through the power connection 32, current can be effectively transferred to the heating element 3, thereby activating the heating process. The power connection 32 needs to ensure good electrical contact to reduce resistance loss and heat generation.

[0065] The heating element 3 has two power terminals 32 corresponding to the positive and negative poles of the power supply to achieve unidirectional flow of current and ensure the normal operation of the heating element 3.

[0066] The conductive rod 5 is a conductive component connecting the power terminal 32 and the temperature control device 4 to transmit the current of the power supply to the heating element 3 , and may also be responsible for feeding back the signal of the temperature control device 4 to the heating element 3 .

[0067] The temperature control device 4 can be two protectors, each of which is connected to the power terminal 32 via a conductive rod 5, and the conductive rod 5 connects the protector and the top of the power terminal 32. In this way, the temperature control device 4 can be installed at a desired location and connected to the heating element 3 via the conductive rod 5, which can facilitate structural layout.

[0068] Specifically, in this embodiment, the temperature control device 4 is screwed or riveted to the annular end cover 2 .

[0069] Screw connections offer good strength and reliability, can withstand certain mechanical stresses, and allow for quick replacement or repair when necessary.

[0070] Rivet connections offer greater durability and stability, making them suitable for components used over extended periods of time. Riveted connections are less likely to loosen and remain stable under vibration and shock conditions.

[0071] By screwing or riveting the temperature control device 4 to the annular end cap 2, the temperature control device 4 can be ensured to remain stable during operation of the heat pump 100, preventing displacement or damage due to temperature changes. This ensures that the temperature control device 4 does not loosen or fall off under extreme operating conditions, thereby improving the safety of the entire heating system.

[0072] See also Figure 1 、 Figure 3 and Figure 5 In this embodiment, a clamping portion 21 is provided on the annular end cover 2 , and a matching portion 11 for clamping and matching with the clamping portion 21 is provided on the pump housing 1 .

[0073] The clamping portion 21 may be a plurality of claws spaced apart along the circumference of the annular end cover 2, and the matching portion 11 may be a plurality of slots corresponding to and matching the plurality of claws.

[0074] See also Figure 1 In this embodiment, the heating pump 100 further includes a sealing ring 6 , which is arranged between the annular end cover 2 and the pump housing 1 .

[0075] The sealing pad can be a silicone pad, a rubber pad, or a filled sealing material. In this way, the sealing between the annular end cover 2 and the pump housing 1 is better, thereby preventing the heating pump 100 from leaking and affecting safety.

[0076] For further information, please refer to Figure 1 In this embodiment, the heating pump 100 also includes a water inlet assembly, which includes an expansion sleeve 7 and a water inlet pipe 8. The expansion sleeve 7 is arranged in the impeller chamber b, and the upper end of the expansion sleeve 7 extends to the water inlet 2a; the lower end of the water inlet pipe 8 is arranged at the water inlet 2a and is clamped between the expansion sleeve 7 and the annular end cover 2.

[0077] By clamping the water inlet pipe 8 between the expansion sleeve 7 and the annular end cap 2, water leakage can be effectively prevented. The clamping structure between the expansion sleeve 7 and the annular end cap 2 can provide a good sealing effect, ensuring that the water inlet pipe 8 will not leak water pressure during use.

[0078] Furthermore, since the water inlet pipe 8 is sandwiched between two fixed structures, no additional fixing device is required during installation, thus reducing the number of installation steps and time.

[0079] 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.

[0080] 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 the pump housing is also provided with a water outlet; an annular end cover, mounted on the mounting opening to enclose the pump casing to form an impeller cavity, with the middle portion of the annular end cover forming a water inlet; as well as, A heating element is installed on the inner side of the annular end cover, and the heating element includes a heating body, and the heating body includes multiple heating segments and a connecting segment. The multiple heating segments are arranged in parallel and extend along the circumference of the annular end cover. One end of two adjacent heating segments is connected by the connecting segment, and the connecting segment is arranged corresponding to the water outlet.

2. The heat pump according to claim 1, wherein The central angles corresponding to the two ends of the connecting section are greater than 180°.

3. The heat pump according to claim 1, wherein The central angle corresponding to the heating element is greater than 180°.

4. The heat pump according to claim 1, wherein The heating pump further comprises a temperature control device, which is arranged on the annular end cover; The annular end cover is provided with a through hole; The end of the heating element passes through the through hole outward to be connected to the temperature control device.

5. The heat pump according to claim 4, wherein: The heating element is welded to the hole wall of the via hole.

6. The heat pump according to claim 4, wherein The heating element further includes two power connection terminals correspondingly arranged on the heating body; The heating pump further comprises two conductive rods, each conductive rod being connected to the corresponding power connection terminal and the temperature control device.

7. The heat pump according to claim 4, wherein The temperature control device is screwed or riveted to the annular end cover.

8. The heat pump according to claim 1, wherein The annular end cover is provided with a clamping portion, and the pump housing is provided with a matching portion for the clamping portion to clamp and match; and / or, The heating pump further comprises a sealing ring which is arranged between the annular end cover and the pump housing.

9. The heat pump according to claim 1, wherein The heating pump further includes a water inlet assembly, which includes: an expansion sleeve, disposed in the impeller chamber, wherein the upper end of the expansion sleeve extends to the water inlet; and A water inlet pipe, the lower end of which is arranged at the water inlet and is clamped between the expansion sleeve and the annular end cover.

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

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