Heating pipe assembly and dish washing machine with same

Abstract

The utility model provides a heating tube assembly and a dish-washing machine with the same, the heating tube assembly comprises a runner tube, the runner tube is a hollow tube and is used for water flow to pass through; the heating pipe is tightly attached to the periphery of the runner pipe; and the heating wire is partially embedded in the heating pipe, and at least partially surrounds the circulating pipe. According to the utility model, the heating wire is embedded into the heating pipe, and the heating pipe is tightly attached to the circulating pipe, so that the heating pipe assembly is compact in structure, the heat loss is reduced, the heat utilization rate is improved, and in addition, the heating wire and the heating pipe can be fused into an integral structure through die-casting production, and the production efficiency is improved. The compact degree of the structure is further improved, heat loss is reduced, and the production process is simplified. The heating tube assembly is compact in structure and easy and convenient to produce, and the heat utilization rate of the heating tube assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dish-washing machine technical field, specifically, a kind of heating tube assembly and the dish-washing machine with it. BACKGROUND

[0002] In recent years, the dish-washing machine and other household appliances gradually popular in market usually need to heat working medium, the existing heater mainly has aluminum tube embedded metal disc-shaped heater and electric heating pipe integral brazing disc-shaped heater, and the heater is heated by being assembled with the water pump of household appliance.

[0003] Chinese patent CN201920617248.0 discloses a small-diameter metal disc-shaped water pump heater with temperature control safety device, comprising a pump cover; further comprising an electric heating pipe; the outer edge of the upper end face of the pump cover is provided with a hole and a temperature control safety device; there are two holes, and the two cold ends of the electric heating pipe pass through the holes; the middle section of the electric heating pipe is arranged in the pump cover in a ring shape; a first conductive rod connects one cold end of the electric heating pipe and the temperature control safety device, and a second conductive rod connects a temperature controller and a fuse in the temperature control safety device. In the patent, the electric heating pipe is located on the inner side of the pump cover, and the middle small part is pressed and attached to the surface of the pump cover, and is locally brazed with the surface of the pump cover. The other parts of the electric heating pipe are completely immersed in the working medium, which greatly improves the heating efficiency compared with the indirect heat conduction or integral brazing type heating pipe of the current disc type heater. However, the heating pipe of the dish-washing machine is usually assembled between the washing pump and the barrel body, and the heating wire and the flow pipe need to be brazed and combined with other processes, which is complex in process and not compact in structure, and the heat loss is large, so the thermal efficiency is low. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a heating pipe assembly, optimizing its structure, simplifying its production process, and improving its heat utilization rate.

[0005] The utility model discloses a heating pipe assembly, comprising:

[0006] The flow pipe is a hollow pipe for passing water flow;

[0007] The heating pipe is tightly attached to the outer periphery of the flow pipe;

[0008] The heating wire is partially embedded in the heating pipe and at least partially surrounds the flow pipe.

[0009] Through the above arrangement, the heating pipe and the heating wire can be formed as an integrated structure, so that the structure of the heating pipe assembly is more compact, the heat loss is significantly reduced, and the heating efficiency is improved. In addition, in the heating process of water flow, the heating pipe does not contact with water, which effectively avoids the corrosion of hot water to the heating pipe.

[0010] Further, the heating pipe and the heating wire are integrally formed on the outer periphery of the flow pipe.

[0011] The heating pipe and the heating wire can be integrally formed on the outer periphery of the flow pipe by pressure casting or the like, so that the matching assembly of the heating pipe, the heating wire and the flow pipe can be completed in only one process step, simplifying the production process flow and improving the production efficiency. In addition, by pressure casting, the structure between the heating pipe, the heating wire and the flow pipe is more compact, thereby further reducing the heat dissipation speed of the heating pipe assembly and improving the heating efficiency.

[0012] Further, the heating wire includes a first wiring end, a second wiring end and a double-curved portion, two ends of the double-curved portion are connected with the first wiring end and the second wiring end respectively, the double-curved portion is arranged in double-bent curve, so that a tubular cavity is formed in the center thereof, and the flow pipe is arranged through the tubular cavity.

[0013] Through the above arrangement, the double-curved portion can directly form a double-wound heating structure, so that the length of the heating section can be saved under the condition of ensuring the heating effect, thereby reducing the cost of the heating pipe assembly.

[0014] Further, the flow pipe includes a flow main pipe, a plurality of limiting ribs are arranged on the outer periphery of the flow main pipe, and the limiting ribs are used for limiting with the heating pipe.

[0015] When the flow pipe and the heating pipe are matched and assembled by pressure casting, the inner wall of the heating pipe forms a shape structure matched with the limiting ribs under the condition of pressure casting, so that the two are limited and matched with each other, thereby ensuring the connection stability between the flow pipe and the heating pipe after pressure casting, and avoiding relative rotation between the two.

[0016] Further, the limiting ribs are limiting convex ribs and / or limiting concave ribs.

[0017] The limiting ribs can effectively limit the heating pipe through the cooperation of the concave-convex structure, thereby ensuring the stability of the connection between the flow pipe and the heating pipe.

[0018] Further, a plurality of anti-skid ribs are arranged on one end of the flow main pipe close to the water inlet direction, and the anti-skid ribs are arranged in protrusion away from the axis of the flow main pipe.

[0019] The water inlet end of the flow main pipe is usually used for connecting a water inlet pipe, and the water inlet pipe is sleeved on the outer periphery of the flow main pipe. At this time, the anti-skid ribs form an inverted buckle structure with the water inlet pipe, which can effectively prevent the water inlet pipe from loosening, thereby improving the connection stability of the water inlet pipe and the heating pipe assembly.

[0020] Further, the heating pipe comprises a heating main pipe and a convex pipe part, the heating main pipe is arranged in close contact with the flow pipe, and the convex pipe part is arranged on one side of the heating main pipe close to the water outlet direction and used for accommodating the heating wire.

[0021] Through the above arrangement, the thicker convex pipe part is arranged only at the position where the heating wire is accommodated, so that the use amount of the raw material of the heating pipe is reduced, and the production cost of the product is reduced.

[0022] Further, a first mounting part is arranged on the heating main pipe, and the first mounting part is used for arranging a water temperature controller, and the water temperature controller is used for detecting at least the temperature of the circulating water in the flow pipe.

[0023] The water temperature controller is arranged on the heating main pipe, so that the water temperature controller is above the water flow and is close to the circulating water, the temperature of the water flow in the flow pipe can be detected more accurately, and the stability of the water temperature control is ensured.

[0024] Further, a second mounting part is arranged on the convex pipe part, and the second mounting part is used for arranging an overheating temperature controller, and the overheating temperature controller is used for detecting at least the temperature of the heating wire.

[0025] The overheating temperature controller is arranged on the convex pipe part, so that the overheating temperature controller is above the heating wire and is close to the heating wire, and the temperature of the heating wire can be detected more accurately. Through the arrangement of the water temperature controller and the overheating temperature controller, double detection protection can be provided for the heating pipe assembly, and the use safety of the heating pipe assembly is further improved.

[0026] The utility model discloses still a kind of dish washer, including the heating pipe assembly as described above.

[0027] The dish washer has the same advantages as the above-mentioned heating pipe assembly compared to the prior art, and will not be described here.

[0028] Compared with the prior art, the heating pipe assembly and the dish washer having the same have the following advantages:

[0029] By embedding the heating wire in the heating pipe and tightly arranging the heating pipe and the flow pipe, the heating pipe assembly has a compact structure, reduces heat loss and improves heat utilization rate. In addition, the above structure can be produced by die casting, integrating the heating wire and the heating pipe into a structure, further improving the compactness of the structure, reducing heat loss and simplifying the production process. The utility model has a compact structure, is easy to produce and improves the heat utilization rate of the heating pipe assembly. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a whole structure schematic view of the heating pipe assembly described in the embodiments of the utility model;

[0031] Figure 2 The whole structure side view of the heating pipe assembly is shown in the embodiment of the utility model.

[0032] Figure 3 The view from the water inlet direction of the heating pipe assembly is shown in the embodiment of the utility model.

[0033] Figure 4 The cross section structure schematic view of the heating pipe assembly is shown in the embodiment of the utility model.

[0034] Figure 5 The structure schematic view of the flow pipe is shown in the embodiment of the utility model.

[0035] Figure 6 The three-dimensional structure schematic view of the heating wire is shown in the embodiment of the utility model.

[0036] Figure 7 The side view structure schematic view of the heating wire is shown in the embodiment of the utility model.

[0037] Figure 8 The schematic view of the heating wire from another angle is shown in the embodiment of the utility model.

[0038] Mark explanation:

[0039] 100, flow pipe; 110, flow main pipe; 120, water outlet ring; 130, limiting rib; 140, anti-skid rib; 200, heating wire; 210, first wiring end; 220, second wiring end; 230, hyperbolic part; 240, tubular cavity; 250, wiring part; 300, heating pipe; 310, heating main pipe; 320, convex pipe part; 330, first mounting part; 340, second mounting part; 350, connecting part; 400, water temperature controller; 500, overheat temperature controller. Specific implementation

[0040] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0041] The heating pipe assembly and the dish washing machine with the same in the embodiment of the utility model will be described in detail below in combination with the drawings.

[0042] Embodiment 1

[0043] The embodiment provides a heating pipe assembly, such as Figures 1-8As shown, comprising:

[0044] A flow pipe 100, which is a hollow pipe for water flow;

[0045] A heating pipe 300, which is tightly arranged on the outer periphery of the flow pipe 100;

[0046] A heating wire 200, which is partially embedded in the heating pipe 300 and at least partially arranged around the flow pipe 100.

[0047] It should be understood that in the prior art, the heating wire in the heating pipe assembly is usually arranged on the surface of the flow pipe 100 by brazing, which has a complex production process and a large heat loss due to the non-compact structure, and the heating efficiency is not high. Through the above arrangement, the heating pipe 300 and the heating wire 200 can be formed as an integrated structure, so that the structure of the heating pipe assembly is more compact, the heat loss is significantly reduced, and the heating efficiency is improved. In addition, through the above arrangement, the heating pipe 300 is not in contact with water during the heating of the water flow, effectively avoiding the corrosion of hot water to the heating pipe 300. In order to ensure the performance of the flow pipe 100, the flow pipe 100 is made of stainless steel material, which can effectively isolate water and the heating pipe 300 and prevent itself from being corroded by hot water. It should be understood that the heating wire 200 partially protrudes from the heating pipe 300 for connecting the power supply, which will not be described here.

[0048] As one of the optional embodiments, as shown in Figure 4 The heating pipe 300 and the heating wire 200 are integrally formed on the outer periphery of the flow pipe 100. Specifically, the heating pipe 300 and the heating wire 200 can be integrally formed on the outer periphery of the flow pipe 100 by pressure casting or other processes, so that the cooperation and assembly of the heating pipe 300, the heating wire 200 and the flow pipe 100 can be completed in only one process step, simplifying the production process flow and improving the production efficiency. In addition, through pressure casting, the structure of the heating pipe 300, the heating wire 200 and the flow pipe 100 is more compact, further reducing the heat loss rate of the heating pipe assembly and improving the heating efficiency. Specifically, during production, the flow pipe 100 and the heating wire 200 are placed in a pressure casting mold and pressure cast together with the heating pipe 300, and the flow pipe 100, the heating wire 200 and the heating pipe 300 are fused into an integrated structure without gaps between them, reducing the heat loss and having high heating efficiency, which can more effectively heat the water flow.

[0049] Specifically, as shown in Figure 6 , Figure 7 , Figure 8As shown, the heating wire 200 comprises a first connecting end 210, a second connecting end 220 and a double-bending portion 230, two ends of the double-bending portion 230 are connected with the first connecting end 210 and the second connecting end 220 respectively, the double-bending portion 230 is arranged in a double-bending manner, so that a tubular cavity 240 is formed in the center of the double-bending portion 230, and the flow pipe 100 is arranged through the tubular cavity 240. The double-bending arrangement refers to bending from the center position of the double-bending portion 230 as an end point, so that the heating section between the center position and the end of the double-bending portion 230 connected with the first connecting end 210 and the heating section between the center position and the end of the double-bending portion 230 connected with the second connecting end 220 are bent synchronously, thereby forming a double-bending structure as shown. Figure 6 Through the above arrangement, the double-bending portion 230 can directly form a double-winding heating structure, and the length of the heating section can be saved to reduce the cost of the heating pipe assembly while ensuring the heating effect. It should be understood that, in the case that the heating wire 200 is integrally formed with the heating pipe 300, the first connecting end 210 and the second connecting end 220 are arranged to protrude from the heating pipe 300 for connecting the power supply, and the double-bending portion 230 is a heating portion which generates heat to heat the water flow passing through the flow pipe 100 when powered. Preferably, as shown, Figure 6 The double-bending angle of the double-bending portion 230 is less than 360°.

[0050] Further, a connecting portion 250 is arranged between the first connecting end 210 and the double-bending portion 230, and another connecting portion 250 is arranged between the second connecting end 220 and the double-bending portion 230, and each of the connecting portions 250 is arranged to at least partially protrude from the heating pipe 300. Through the above arrangement, the length of the heating wire 200 protruding from the heating pipe 300 can be extended, thereby facilitating the subsequent wiring arrangement.

[0051] Optionally, as shown, Figure 4 , Figure 5As shown, the flow pipe 100 comprises a flow main pipe 110, a plurality of limiting ribs 130 are arranged on the outer periphery of the flow main pipe 110, and the limiting ribs 130 are used for limiting with the heating pipe 300. It should be understood that when the flow pipe 100 and the heating pipe 300 are assembled by pressure casting, the inner wall of the heating pipe 300 forms a shape structure matched with the limiting ribs 130 under the condition of pressure casting, so that the two are limited to each other, and the connection stability between the flow pipe 100 and the heating pipe 300 after pressure casting is ensured, and relative rotation between the two is avoided. It should be understood that the flow main pipe 110 is a hollow tubular structure for water flow. Preferably, a plurality of limiting ribs 130 are uniformly distributed on the outer periphery of the flow main pipe 110 in the circumferential direction, and the limiting ribs 130 are arranged in parallel with the water flow direction. As one of the embodiments, the limiting ribs 130 are three, and the three limiting ribs 130 extend along the water flow direction and are uniformly distributed on the outer periphery of the flow main pipe 110 in the circumferential direction.

[0052] Preferably, the limiting ribs 130 are limiting convex ribs and / or limiting concave ribs. When the limiting ribs 130 are limiting convex ribs, the inner wall of the heating pipe 300 will form a corresponding matching concave rib structure when pressure casting, and when the limiting ribs 130 are limiting concave ribs, the inner wall of the heating pipe 300 will form a corresponding matching convex rib structure when pressure casting. The matching of the concave-convex structure can effectively limit the heating pipe 300 and ensure the stability of the connection between the flow pipe 100 and the heating pipe 300.

[0053] As another embodiment of the utility model, as shown in the figure, Figure 5 As shown, a plurality of anti-skid ribs 140 are arranged on one end of the flow main pipe 110 close to the water inlet direction, and the anti-skid ribs 140 are arranged in a convex manner away from the axis of the flow main pipe 110. It should be understood that the water inlet end of the flow main pipe 110 is usually used for connecting a water inlet pipe (not shown in the figure), and the water inlet pipe is usually made of rubber and is sleeved on the outer periphery of the flow main pipe 110. At this time, the anti-skid ribs 140 form an inverted buckle structure with the water inlet pipe, which can effectively prevent the water inlet pipe from loosening and improve the connection stability of the water inlet pipe and the heating pipe assembly. Preferably, three anti-skid ribs 140 are arranged on the flow main pipe 110, and the three anti-skid ribs 140 are uniformly distributed on the outer periphery of the flow main pipe 110 in the circumferential direction.

[0054] As an embodiment of the utility model, as shown in the figure, Figure 4 , Figure 5The water outlet ring 120 extends away from the axis of the flow main pipe 110 and is concave to form a ring-shaped groove in the direction of water outlet, and the ring-shaped groove is matched with the heating pipe 300. Since the heating pipe 300 is pressure-cast, the material of the heating pipe 300 (such as pressure-cast aluminum) fills the ring-shaped groove under the extrusion of external force during the pressure-casting process, so that the two are matched to form an embedded structure, further improving the connection stability of the flow pipe 100 and the heating pipe 300.

[0055] In the embodiment, the heating pipe 300 includes a heating main pipe 310 and a convex pipe portion 320. The heating main pipe 310 is arranged in close contact with the flow pipe 100, and the convex pipe portion 320 is arranged on one side of the heating main pipe 310 close to the water outlet direction and is used to accommodate the heating wire 200. Through the above arrangement, the thicker convex pipe portion 320 can be arranged only at the position where the heating wire 200 needs to be accommodated, so as to reduce the use amount of raw materials of the heating pipe 300 and reduce the production cost of the product.

[0056] Preferably, as shown in Figure 1 , Figure 2 The first mounting portion 330 is arranged on the heating main pipe 310 and is used to arrange the water temperature controller 400. The water temperature controller 400 is used to detect at least the temperature of the circulating water in the flow pipe 100. Specifically, the water temperature controller 400 is also linked with the power supply of the heating pipe assembly for control. When the temperature of the water flow in the flow pipe 100 reaches the set temperature, the water temperature controller 400 acts to cut off the power supply of the heating pipe assembly and stop heating, so as to avoid the water temperature being too high. It should be understood that, in order to facilitate the arrangement of the water temperature controller 400, the side of the first mounting portion 330 away from the heating main pipe 310 is planar. This arrangement helps the water temperature controller 400 to be in close contact with the first mounting portion 330, so as to ensure the accuracy of detection. In addition, the water temperature controller 400 is arranged on the heating main pipe 310, so that it is above the water flow and is close to the circulating water, which can more accurately detect the temperature of the water flow in the flow pipe 100 and ensure the stability of water temperature control.

[0057] Optionally, as shown in Figure 1 , Figure 2As shown, a second mounting portion 340 is arranged on the convex tube portion 320, and the second mounting portion 340 is used to arrange an overheat temperature controller 500, and the overheat temperature controller 500 is used to detect the temperature of the heating wire 200. Specifically, the overheat temperature controller 500 is linked with the power supply of the heating tube assembly, and when the water temperature controller 400 is damaged or the heating wire 200 is abnormal, the temperature of the heating wire 200 will usually exceed the preset temperature threshold, at this time, the overheat temperature controller 500 can timely cut off the power supply and stop heating to avoid damage to other components. It should be understood that in order to facilitate the arrangement of the overheat temperature controller 500, the side of the second mounting portion 340 away from the convex tube portion 320 is flat, which helps the overheat temperature controller 500 to be in close contact with the second mounting portion 340, and ensures the accuracy of detection. In addition, the overheat temperature controller 500 is arranged on the convex tube portion 320, so that it is above the heating wire 200 and has a small distance from the heating wire 200, which can more accurately detect the temperature of the heating wire 200. Through the arrangement of the water temperature controller 400 and the overheat temperature controller 500, the heating tube assembly can provide double detection protection, and further improve the use safety.

[0058] Preferably, a connecting portion 350 is arranged on one end of the heating tube 300 close to the water outlet direction, and the connecting portion 350 is used for fixed installation of the heating tube assembly. Through the connecting portion 350, the heating tube assembly can be fixedly arranged on the pump body or other components in the dishwasher, which will not be repeated here.

[0059] Embodiment 2

[0060] The embodiment discloses a dishwasher, which comprises the heating tube assembly as described in embodiment 1.

[0061] The dishwasher has the same advantages as the heating tube assembly described in embodiment 1 relative to the prior art, which will not be repeated here.

[0062] It should be understood that the dishwasher also comprises conventional components such as a dishwashing cavity, which will not be limited and repeated here.

[0063] It should be noted that all the terms for indicating directionality and positionality in the utility model, such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "low", "tail end", "head end", "center", etc., are only used to explain the relative positional relationship, connection condition, etc. between components in a certain state, and are only for the convenience of describing the utility model, and thus cannot be understood as a limitation on the utility model. In addition, the description of "first", "second", etc. in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features.

[0064] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, and thus the protection scope of the utility model should be limited by the range defined by the claims.

Claims

1. A heat generating tube assembly, characterized by, include: A flow pipe (100), wherein the flow pipe (100) is a hollow pipe for passing water; A heating element (300) is provided in close contact with the outer periphery of the flow tube (100); Heating wire (200) is partially embedded in the heating tube (300) and at least partially surrounds the flow tube (100).

2. The heat-generating tube assembly of claim 1, wherein The heating tube (300) and heating wire (200) are integrally formed and disposed on the outer periphery of the flow tube (100).

3. The heat-generating tube assembly of claim 1, wherein The heating wire (200) includes a first terminal (210), a second terminal (220), and a hyperboloid (230). The two ends of the hyperboloid (230) are connected to the first terminal (210) and the second terminal (220) respectively. The hyperboloid (230) is arranged in a double bend, so that a tubular cavity (240) is formed in the center. The flow tube (100) is arranged through the tubular cavity (240).

4. The heat-generating tube assembly of any one of claims 1-3, wherein, The flow tube (100) includes a main flow tube (110), and a plurality of limiting ribs (130) are provided on the outer periphery of the main flow tube (110). The limiting ribs (130) are used to cooperate with the heating tube (300) for limiting.

5. The heat-generating tube assembly of claim 4, wherein The limiting reinforcement (130) is a limiting convex reinforcement and / or a limiting concave reinforcement.

6. The heat-generating tube assembly of claim 4, wherein A plurality of anti-slip ribs (140) are provided at one end of the main flow pipe (110) near the water inlet direction. The anti-slip ribs (140) are arranged to protrude in a direction away from the axis of the main flow pipe (110).

7. The heat-generating tube assembly of claim 1, wherein The heating tube (300) includes a main heating tube (310) and a convex tube (320). The main heating tube (310) is fitted to the flow tube (100), and the convex tube (320) is located on the side of the main heating tube (310) near the water outlet direction, for accommodating the heating wire (200).

8. The heat-generating tube assembly of claim 7, wherein A first mounting part (330) is provided on the heating main pipe (310), the first mounting part (330) is used to install a water temperature controller (400), the water temperature controller (400) is used to detect at least the temperature of the circulating water in the flow pipe (100).

9. A heat-generating tube assembly according to claim 7 or 8, wherein A second mounting portion (340) is provided on the convex tube portion (320), the second mounting portion (340) is used to install an overheat temperature controller (500), the overheat temperature controller (500) is used to detect the temperature of the heating wire (200).

10. A dishwasher, characterized in that Includes the heating element assembly as described in any one of claims 1-9.

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