Heating pump of dish washing machine

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a heating pump for a dish washing machine. The heating pump of the dish-washing machine comprises a pump shell and a pump cover, the pump cover is connected with the pump shell, the pump cover comprises a cover body in a circular plate shape, a connecting hole is formed in the center of the cover body, an annular protrusion is arranged on the lower surface of the cover body, the heating pump of the dish-washing machine further comprises an electric heating pipe, and the electric heating pipe is embedded in the annular protrusion. The structure of the heating pump of the dish-washing machine is improved, specifically, the pump cover is improved, the electric heating pipe and the pump cover are integrally formed, and the annular protrusion is located below the pump cover, so that the heating area is increased, and better heat efficiency is achieved.

Description

Technical Field

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

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

[0003] The mainstream dishwasher heating pump structures on the market at present include embedded heating tube and plug-in heating tube, both of which are formed by stainless steel stamping. They are combined with pump cover, pump casing and electric heating tube, and then assembled with water pump, and then the flowing liquid is heated in the working room. Currently, brazing is mostly used, which is time-consuming and labor-intensive. Summary of the invention

[0004] In view of the shortcomings of the prior art, the utility model improves the structure of the dishwasher heating pump, specifically the pump cover, by forming the electric heating tube and the pump cover into one piece, and the annular protrusion is located under the pump cover, thereby increasing the heating area and achieving better thermal efficiency.

[0005] The technical solution of the utility model is as follows:

[0006] A dishwasher heating pump comprises a pump casing and a pump cover, wherein the pump cover is connected to the pump casing, the pump cover comprises a circular plate-shaped cover body, a connecting hole is provided at the center of the cover body, an annular protrusion is provided on the lower surface of the cover body, and an electric heating tube is pre-buried in the annular protrusion.

[0007] Furthermore, the cross section of the annular protrusion is semicircular or square.

[0008] Furthermore, an outer peripheral plate is provided on the outer end surface of the cover body, a step surface is provided on the upper end of the pump housing, a sealing ring is installed on the step surface, the end surface of the pump housing is abutted against the lower end surface of the cover body, and the inner wall of the outer peripheral plate is close to the outer peripheral surface of the pump housing.

[0009] Furthermore, the outer peripheral plate of the cover body is provided with a plurality of connecting ears, and pin holes are opened on the connecting ears. The upper end of the outer peripheral surface of the corresponding pump casing is provided with a plurality of fixing protrusions, and the upper end of the fixing protrusion is provided with a connecting groove for accommodating the connecting ears, and the side wall of the connecting groove is also provided with a pin hole. The pin shaft passes through the connecting ears and the pin shaft of the fixing block to realize the connection between the cover body and the pump casing.

[0010] Furthermore, the first terminal and the second terminal of the electric heating tube are arranged on the upper surface of the cover body, and a mounting boss is also provided on the surface of the cover body. Two controllers are fixedly connected to the mounting boss, one controller is connected to the first terminal, and the other controller is connected to the second terminal, and the other ends of the two controllers are connected to a power supply.

[0011] Furthermore, a water inlet hose is connected to the connecting hole.

[0012] Furthermore, a water outlet is provided on the side wall of the pump housing.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. The utility model improves the structure of the dishwasher heating pump, specifically the pump cover, by adding an annular boss to accommodate the electric heating tube. The annular boss increases the heating area of ​​the pump cover and the water, thereby improving the heating efficiency and making the heating pump have better thermal efficiency.

[0015] 2. The utility model further improves the connection method between the pump casing and the pump cover. The pump cover and the pump casing are connected and fixed by a pin shaft. A sealing ring is arranged between the pump cover and the pump casing to ensure the sealing effect between the two and facilitate subsequent disassembly. In the event of sealing failure or poor pump casing, the entire upper cover will not be scrapped, thereby reducing the rework cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is a top view schematic diagram of the utility model;

[0018] Figure 3 for Figure 2 A cross-sectional schematic diagram of

[0019] In the figure, 1 is a pump housing, 10 is a step surface, 11 is a fixed protrusion, and 12 is a water outlet.

[0020] 2 is a pump cover, 20 is a cover body, 21 is a connecting hole, 22 is a connecting ear, 220 is a pin hole, 23 is an annular protrusion, 201 is an outer peripheral plate, 202 is a mounting boss,

[0021] 3 is an electric heating tube, 30 is a first terminal, 31 is a second terminal,

[0022] 4 is a sealing ring,

[0023] 5 is a controller and 6 is a water inlet hose. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, or "fixedly connected" to another element, they may be fixed in a detachable manner or in a non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to restrict the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The terms “first”, “second”, “third” and the like in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0028] See also Figures 1 to 3 As shown, a dishwasher heating pump includes a pump housing 1 and a pump cover 2, the pump cover 2 is connected to the pump housing 1, the pump cover 2 includes a circular plate-shaped cover body 20, a connecting hole 21 is provided at the center of the cover body 20, an annular protrusion 23 is provided on the lower surface of the cover body 20, and also includes an electric heating tube 3, which is pre-buried in the annular protrusion 23.

[0029] The utility model improves the heating pump of the dishwasher. The electric heating pipe is pre-embedded in the annular protrusion of the pump cover by die-casting. The pump cover is made of aluminum material. The annular protrusion increases the heating area of ​​water and has better thermal efficiency.

[0030] The cross-section of the annular protrusion 23 is semicircular or square. The cross-section of the annular protrusion is limited here. When a square cross-section is adopted, it has a larger heating area. When a semicircular cross-section is adopted, the distance between the surface of the annular protrusion and the electric heating tube is more uniform, thereby ensuring the uniformity of the temperature on the surface of the annular protrusion, so that the equipment can heat the water more evenly.

[0031] An outer plate 201 is provided on the outer end surface of the cover body 20, and a step surface 10 is provided on the upper end of the pump casing 1. The sealing ring 4 is installed on the step surface. The end surface of the pump casing 1 is abutted against the lower end surface of the cover body 20. The inner wall of the outer plate 201 is close to the outer peripheral surface of the pump casing 1. A sealing ring is used to seal between the pump cover and the pump casing. The structure is simple and convenient for disassembly and maintenance.

[0032] The outer peripheral plate of the cover body 20 is provided with a plurality of connecting ears 22, and pin holes 220 are opened on the connecting ears. The upper end of the outer peripheral surface of the corresponding pump casing 1 is provided with a plurality of fixing protrusions 11, and the upper end of the fixing protrusion 11 is provided with a connecting groove 110 for accommodating the connecting ears, and the side wall of the connecting groove 110 is also provided with a pin hole. The pin shaft passes through the connecting ears and the pin shaft of the fixing protrusion to realize the connection between the cover body and the pump casing. The cover body here is connected to the pump casing through the pin shaft, and the connection between the two is reliable and not easy to loosen, and the pin shaft can also be removed. In the event of sealing failure or poor pump casing, the entire upper cover will not be scrapped, thereby reducing the rework cost.

[0033] The first terminal 30 and the second terminal 31 of the electric heating tube 3 are arranged on the upper surface of the cover body 20. The surface of the cover body 20 is also provided with a mounting boss 202. Two controllers 5 are fixedly connected to the mounting boss 202. One controller 5 is connected to the first terminal 30, and the other controller 5 is connected to the second terminal 31. The other ends of the two controllers are connected to a power supply. Specifically, the controller described here includes a temperature sensor and a fuse. The temperature sensor is used to detect the temperature of the electric heating tube, and the fuse is used to protect the electric heater in the event of an overload, thereby improving the safety of the equipment.

[0034] The connection hole 21 is connected with a water inlet hose 6, and the water inlet hose is used to transport cold water into the heating pump.

[0035] The side wall of the pump housing 1 is provided with a water outlet 12, which is used to output the heated hot water out of the heating pump.

[0036] In summary, the utility model has the following beneficial effects:

[0037] 1. The utility model improves the structure of the dishwasher heating pump, specifically the pump cover, by adding an annular boss to accommodate the electric heating tube. The annular boss increases the heating area of ​​the pump cover and the water, thereby improving the heating efficiency and making the heating pump have better thermal efficiency.

[0038] 2. The utility model further improves the connection method between the pump casing and the pump cover. The pump cover and the pump casing are connected and fixed by a pin shaft. A sealing ring is arranged between the pump cover and the pump casing to ensure the sealing effect between the two and facilitate subsequent disassembly. In the event of sealing failure or poor pump casing, the entire upper cover will not be scrapped, thereby reducing the rework cost.

[0039] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

Claims

1. A dishwasher heating pump, comprising a pump housing and a pump cover, wherein the pump cover is connected to the pump housing, and characterized in that: The pump cover comprises a circular plate-shaped cover body, a connecting hole is arranged at the center of the cover body, an annular protrusion is arranged on the lower surface of the cover body, and an electric heating tube is also included, and the electric heating tube is pre-buried in the annular protrusion.

2. The dishwasher heating pump according to claim 1, characterized in that: The cross section of the annular protrusion is semicircular or square.

3. The dishwasher heating pump according to claim 1, characterized in that: The outer end surface of the cover body is provided with an outer peripheral plate, the upper end of the pump shell is provided with a step surface, the sealing ring is installed on the step surface, the end surface of the pump shell is abutted against the lower end surface of the cover body, and the inner wall of the outer peripheral plate is close to the outer peripheral surface of the pump shell.

4. The dishwasher heating pump according to any one of claims 1 to 3, characterized in that: The outer peripheral plate of the cover body is provided with a plurality of connecting ears, and pin holes are opened on the connecting ears. The upper end of the outer peripheral surface of the corresponding pump shell is provided with a plurality of fixing protrusions, and the upper end of the fixing protrusion is provided with a connecting groove for accommodating the connecting ears, and the side wall of the connecting groove is also provided with a pin hole. The pin shaft passes through the connecting ears and the fixing protrusions to realize the connection between the cover body and the pump shell.

5. The dishwasher heating pump according to claim 4, characterized in that: The first terminal and the second terminal of the electric heating tube are arranged on the upper surface of the cover body. The surface of the cover body is also provided with a mounting boss. Two controllers are fixedly connected to the mounting boss. One controller is connected to the first terminal, and the other controller is connected to the second terminal. The other ends of the two controllers are connected to a power supply.

6. The dishwasher heating pump according to claim 5, characterized in that: A water inlet hose is connected in the connecting hole.

7. The dishwasher heating pump according to claim 6, characterized in that: A water outlet is arranged on the side wall of the pump casing.

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