Heating module of sweeping robot

Abstract

The utility model relates to a floor sweeping robot heating module which comprises an electric heating tube, a stainless steel outer sleeve is sleeved outside the electric heating tube, one end of the stainless steel outer sleeve is fixedly connected with a water inlet nozzle, and the other end of the stainless steel outer sleeve is fixedly connected with a water outlet nozzle. Two ends of the stainless steel outer sleeve are respectively welded with the electric heating tube, so that a heating channel is formed between the stainless steel outer sleeve and the electric heating tube, and two ends of the heating channel are respectively communicated with the water inlet nozzle and the water outlet nozzle; the middle of the stainless steel outer sleeve is punched to form a turbulent flow section used for changing the flowing direction of water in the heating channel. The heating module has the beneficial effects that the heating module is independently arranged outside the cleaning tank to heat water, the electric heating tube does not need to occupy the internal space of the cleaning tank, and sanitary dead angles in the cleaning tank are prevented from being increased; the middle of the stainless steel outer sleeve is punched to form a turbulent flow section to change the flowing direction of water in the heating channel, and the heating uniformity of the water in the heating channel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating, in particular to a heating module of a sweeping robot. Background Art

[0002] A sweeping robot is a household appliance that cleans the floor remotely or automatically. With the development of technology, the functions of sweeping robots are becoming more and more diversified. Some sweeping robots have added the function of heating cleaning water. The existing heating method is to directly install an electric heating tube in the cleaning tank to heat the water in the cleaning tank. In this heating method, the heating rod needs to occupy the internal space of the cleaning tank and increase the sanitary dead corners in the cleaning tank. Therefore, it is necessary to develop a sweeping robot heating module that heats the water independently outside the cleaning tank. Utility Model Content

[0003] The purpose of the present invention is to overcome the above problems existing in the prior art and provide a heating module for a sweeping robot.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A heating module for a sweeping robot comprises a linear electric heating tube, the electric heating tube being sheathed with a stainless steel outer sleeve, one end of the stainless steel outer sleeve being fixedly connected to a water inlet nozzle for connecting to the water inlet pipe of the sweeping robot, and the other end of the stainless steel outer sleeve being fixedly connected to a water outlet nozzle for connecting to the cleaning tank of the sweeping robot, both ends of the stainless steel outer sleeve being respectively welded to the electric heating tube to form a heating channel between the stainless steel outer sleeve and the electric heating tube, the two ends of the heating channel being respectively connected to the water inlet nozzle and the water outlet nozzle; the middle part of the stainless steel outer sleeve being stamped to form a turbulent section for changing the flow direction of water in the heating channel.

[0006] The cross section of the spoiler section is arch-shaped, and the spoiler section is divided into an arc portion and a flat portion, and the arc portion and the water inlet nozzle and the water outlet nozzle are located on the same side of the stainless steel outer casing.

[0007] Furthermore, the distance between the center line of the inner side surface of the arc portion and the inner side surface of the plane portion is 0-2 mm larger than the diameter of the electric heating tube.

[0008] Furthermore, a thermostat for monitoring the temperature of the stainless steel outer sleeve and controlling the operation of the electric heating tube is installed on the outer side of the planar portion, and the pins of the thermostat are respectively connected to the electric heating tube and the power supply of the sweeping robot through wires.

[0009] Among them, the electric heating tube includes a stainless steel heating tube with a circular cross-section, and a ceramic plug is installed at each end of the stainless steel heating tube. A conductive lead rod is fixedly installed in each ceramic plug, and a resistance wire is fixedly connected between the two conductive lead rods. A conductive terminal piece is installed and welded at one end of the two conductive lead rods located outside the stainless steel heating tube.

[0010] Furthermore, a conductive grounding plate is welded on the stainless steel outer sleeve to prevent the stainless steel outer sleeve from being charged.

[0011] Furthermore, the diameters of the two ends of the stainless steel outer sleeve gradually decrease from the middle of the stainless steel outer sleeve to its ends, and the two ends of the stainless steel outer sleeve are respectively welded to the outer side walls of the two ends of the stainless steel heating tube.

[0012] Furthermore, the stainless steel heating tube is also filled with heat-conductive filler.

[0013] Furthermore, the resistance wire is located between the water inlet nozzle and the water outlet nozzle, and the length of the resistance wire is greater than the distance between the water inlet nozzle and the water outlet nozzle.

[0014] The beneficial effects of the present invention are as follows: a stainless steel outer sleeve is put on the outer sleeve of a linear electric heating tube, and two points of the stainless steel outer sleeve are welded to the electric heating tube respectively to form a heating channel between the stainless steel outer sleeve and the electric heating tube, and a water inlet nozzle and a water outlet nozzle connected to the heating channel are provided on the stainless steel outer sleeve. After the electric heating tube is energized, it generates heat to heat the tap water entering the heating channel, and then discharges it into the cleaning tank of the sweeping robot. This heating module heats the water independently outside the cleaning tank, and the electric heating tube does not need to occupy the internal space of the cleaning tank, and avoids increasing the sanitary dead corners inside the cleaning tank; a turbulent section is stamped in the middle of the stainless steel outer sleeve to change the flow direction of water in the heating channel, thereby improving the uniformity of water heating in the heating channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the heating module of the sweeping robot in the present invention;

[0017] Figure 2 This is a schematic diagram of the planar structure of the heating module of the sweeping robot in the present invention from a side view;

[0018] Figure 3 This is a schematic diagram of the planar structure of the heating module of the sweeping robot in the present invention when viewed from above;

[0019] Figure 4 yes Figure 3 Schematic diagram of the cross-section structure along the AA direction;

[0020] Figure 5 This is a schematic cross-sectional view of one end of the water inlet nozzle of the heating module of the sweeping robot in the present invention;

[0021] Explanation of the numbers in the figure: electric heating tube 1, stainless steel heating tube 11, ceramic plug 12, conductive lead rod 13, resistance wire 14, conductive terminal piece 15, thermal conductive filler 16, stainless steel outer sleeve 2, water inlet nozzle 21, water outlet nozzle 22, spoiler section 23, arc portion 231, flat portion 232, conductive grounding plate 24, heating channel 3. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0023] like Figures 1 to 5 As shown, a heating module of a sweeping robot includes a linear electric heating tube 1, which includes a stainless steel heating tube 11 with a circular cross-section. A ceramic plug 12 is installed at each end of the stainless steel heating tube 11, and a conductive lead rod 13 is fixedly installed in each ceramic plug 12. A resistance wire 14 is fixedly connected between the two conductive lead rods 13. A conductive terminal piece 15 is installed and welded at one end of the two conductive lead rods 13 located outside the stainless steel heating tube 11. The two conductive terminal pieces are respectively connected to the power supply with wires to make the resistance wire 14 energized and generate heat, thereby heating the stainless steel heating tube 11; the stainless steel heating tube 1 is also filled with a thermally conductive filler 16 to improve the uniformity of heating of the stainless steel heating tube 11 and improve the transfer efficiency of heat from the resistance wire 14 to the stainless steel heating tube 11. The thermally conductive filler in this embodiment is magnesium oxide.

[0024] The electric heating tube 1 is covered with a stainless steel outer tube 2. One end of the stainless steel outer tube 2 is fixedly connected to a water inlet nozzle 21 for connecting to the water inlet pipe of the sweeping robot, and the other end of the stainless steel outer tube 2 is fixedly connected to a water outlet nozzle 22 for connecting to the cleaning tank of the sweeping robot. The two ends of the stainless steel outer tube 2 are respectively welded to the electric heating tube 1 to form a heating channel 3 between the stainless steel outer tube 2 and the electric heating tube 1. The two ends of the heating channel 3 are respectively connected to the water inlet nozzle 21 and the water outlet nozzle 22.

[0025] Specifically, the diameters of the two ends of the stainless steel outer tube 2 gradually decrease from the middle of the stainless steel outer tube 2 to the ends thereof, and the two ends of the stainless steel outer tube 2 are respectively welded to the outer side walls of the two ends of the stainless steel heating tube 11 .

[0026] The middle part of the stainless steel outer sleeve 2 is stamped to form a spoiler section 23 for changing the flow direction of water in the heating channel 3. The cross-section of the spoiler section 23 is arched, and the spoiler section 23 is divided into an arc portion 231 and a flat portion 232. The arc portion 231 and the water inlet nozzle 21 and the water outlet nozzle 22 are located on the same side of the stainless steel outer sleeve 2. The distance between the center line of the inner side surface of the arc portion 231 and the inner side surface of the flat portion 232 is 0-2mm larger than the diameter of the electric heating tube 1. Before the water flows through the middle of the heating channel, the flow direction is changed to flow on both sides of the central axis of the heating channel. After passing through the middle of the heating channel, the water changes its flow direction again and flows toward the water outlet nozzle, so that the water is stirred and mixed in the heating channel, thereby improving the uniformity of water heating.

[0027] In order to prevent leakage from damaging the heating module or injuring people, a conductive grounding plate 24 is welded on the stainless steel outer sleeve 2. The conductive grounding plate 24 is connected to the grounding wire of the sweeping robot during installation.

[0028] In order to avoid wasting the resistance wire 14 , the resistance wire 14 is located between the water inlet nozzle 21 and the water outlet nozzle 22 , and the length of the resistance wire 14 is greater than the distance between the water inlet nozzle 21 and the water outlet nozzle 22 .

[0029] A thermostat is installed on the outer side of the plane part to monitor the temperature of the stainless steel outer sleeve and control the operation of the electric heating tube. The pins of the thermostat are connected to the electric heating tube and the power supply of the sweeping robot through wires.

[0030] A stainless steel outer sleeve is put on the outer sleeve of the linear electric heating tube, and two points of the stainless steel outer sleeve are welded to the electric heating tube to form a heating channel between the stainless steel outer sleeve and the electric heating tube, and a water inlet nozzle and a water outlet nozzle connected to the heating channel are set on the stainless steel outer sleeve. After the electric heating tube is energized, it generates heat to heat the tap water entering the heating channel, and then discharges it into the cleaning tank of the sweeping robot. This heating module heats the water independently outside the cleaning tank. The electric heating tube does not need to occupy the internal space of the cleaning tank, and avoids increasing the sanitary dead corners inside the cleaning tank; a turbulent section is stamped in the middle of the stainless steel outer sleeve to change the flow direction of water in the heating channel, thereby improving the uniformity of water heating in the heating channel.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A heating module for a sweeping robot, characterized by: It includes a linear electric heating tube, which is covered with a stainless steel outer tube. One end of the stainless steel outer tube is fixedly connected to a water inlet nozzle for connecting to the water inlet pipe of the sweeping robot, and the other end of the stainless steel outer tube is fixedly connected to a water outlet nozzle for connecting to the cleaning tank of the sweeping robot. The two ends of the stainless steel outer tube are respectively welded to the electric heating tube to form a heating channel between the stainless steel outer tube and the electric heating tube, and the two ends of the heating channel are respectively connected to the water inlet nozzle and the water outlet nozzle; the middle part of the stainless steel outer tube is stamped to form a turbulent section for changing the flow direction of water in the heating channel.

2. The heating module of the sweeping robot according to claim 1, characterized in that: The cross section of the spoiler section is arch-shaped, and the spoiler section is divided into an arc portion and a flat portion, and the arc portion and the water inlet nozzle and the water outlet nozzle are located on the same side of the stainless steel outer casing.

3. The heating module of the sweeping robot according to claim 2, characterized in that: The distance between the center line of the inner side surface of the arc portion and the inner side surface of the plane portion is 0-2 mm larger than the diameter of the electric heating tube.

4. The heating module of the sweeping robot according to claim 2, characterized in that: A thermostat for monitoring the temperature of the stainless steel outer sleeve and controlling the operation of the electric heating tube is installed on the outer side of the plane portion. The pins of the thermostat are connected to the electric heating tube and the power supply of the sweeping robot through wires.

5. The heating module of the sweeping robot according to claim 1, characterized in that: The electric heating tube includes a stainless steel heating tube with a circular cross-section. A ceramic plug is installed at each end of the stainless steel heating tube. A conductive lead rod is fixedly installed in each ceramic plug. A resistance wire is fixedly connected between the two conductive lead rods. A conductive terminal piece is installed and welded at one end of the two conductive lead rods located outside the stainless steel heating tube.

6. The heating module of the sweeping robot according to claim 5, characterized in that: A conductive grounding sheet is welded on the stainless steel outer sleeve to prevent the stainless steel outer sleeve from being electrified.

7. The heating module of the sweeping robot according to claim 5, characterized in that: The diameters of the two ends of the stainless steel outer sleeve gradually decrease from the middle of the stainless steel outer sleeve to the end thereof, and the two ends of the stainless steel outer sleeve are respectively welded to the outer side walls of the two ends of the stainless steel heating tube.

8. The heating module of the sweeping robot according to claim 5, characterized in that: The stainless steel heating tube is also filled with heat-conducting filler.

9. The heating module of the sweeping robot according to claim 5, characterized in that: The resistance wire is located between the water inlet nozzle and the water outlet nozzle, and the length of the resistance wire is greater than the distance between the water inlet nozzle and the water outlet nozzle.

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