Surface cleaning device with liquid supply assembly

Abstract

The utility model discloses a surface cleaning device with a liquid supply assembly, which belongs to the technical field of cleaning equipment and comprises the liquid supply assembly, the liquid supply assembly comprises a water tank, a water spraying part and a heating part, and the water tank and the water spraying part are communicated through the heating part so that liquid flowing out of the water tank flows to the water spraying part after being heated. A buffer steering part is further arranged on the downstream portion of the heating part and comprises a water inlet end, a water outlet end and a temperature measuring end provided with a temperature measuring probe, and the front end face of the temperature measuring probe is opposite to the water inlet end so that liquid flowing in from the water inlet end can be distributed in the circumferential direction of the temperature measuring probe after making contact with the front end face of the temperature measuring probe. The temperature measurement area of the temperature measurement probe in contact with the liquid is effectively increased, and the temperature measurement heating uniformity of the temperature measurement probe is improved, so that the temperature measurement accuracy of the temperature measurement probe on the liquid is improved, and the liquid heated by the heating piece better meets the preset temperature requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a surface cleaning device with a liquid supply component. Background Art

[0002] With the development of science and technology, the functions of surface cleaners are becoming more and more diversified. In order to improve the cleaning effect, some handheld surface cleaners are equipped with heating elements on the liquid supply pipeline. The heating elements are used to heat the liquid, and the heated liquid is sprayed onto the cleaning element or the ground, thereby improving the cleaning effect of the cleaning element on stubborn stains on the ground.

[0003] In order to reasonably control the heating temperature of the liquid, a temperature detection element is usually provided on the liquid supply pipeline or other locations. The temperature detection element is used to detect the heated liquid, so that the control module can timely adjust the heating efficiency of the heating element according to the detection signal of the temperature detection element, so that the fluid flowing through the heating element can be stably heated to a certain temperature range, ensuring that the fluid maintains a certain temperature when it reaches the cleaning element or the ground, and meeting the needs of dissolving stubborn stains. However, in the existing structure, since the detection probe of the temperature detection element is generally arranged perpendicular to the flow direction of the liquid, although it can ensure that the liquid flows through the probe of the temperature detection element, it also causes the detection head of the temperature detection element to form a water inlet surface facing the direction of liquid inflow and a back water surface opposite to the water inlet surface. The detection probe can effectively contact a small area of ​​the liquid, which is not conducive to ensuring the accuracy of the temperature detection element in detecting the liquid temperature, and thus is not conducive to ensuring the temperature stability of the outflowing cleaning fluid. Utility Model Content

[0004] In order to solve the shortcomings and deficiencies existing in the above-mentioned prior art, the utility model provides a surface cleaning device with a liquid supply component, which effectively increases the temperature measuring area of ​​the temperature measuring probe in contact with the liquid, improves the temperature measurement and heating uniformity of the temperature measuring probe, thereby improving the temperature measurement accuracy of the temperature measuring probe on the liquid, and enables the liquid heated by the heating element to better meet the preset temperature requirements.

[0005] In order to achieve the above technical objectives, the utility model provides a surface cleaning device with a liquid supply component, the surface cleaning device includes a liquid supply component, the liquid supply component includes a water tank, a water spray component and a heating component, the water tank and the water spray component are connected through the heating component so that the liquid flowing out of the water tank flows to the water spray component after being heated, and a buffer diverting component is also provided downstream of the heating component, the buffer diverting component includes a water inlet end, a water outlet end and a temperature measuring end provided with a temperature measuring probe, the front end face of the temperature measuring probe is arranged opposite to the water inlet end, so that the liquid flowing in from the water inlet end contacts the front end face of the temperature measuring probe and is diverted along the circumference of the temperature measuring probe.

[0006] Preferably, the buffer diverter also includes a buffer cavity connected to both the water inlet and the water outlet, the temperature measuring probe is arranged in the buffer cavity and the cross-sectional area of ​​the buffer cavity is larger than the cross-sectional area of ​​the water inlet.

[0007] Preferably, the front end of the temperature measuring probe is arranged on the central axis of the water inlet end.

[0008] Preferably, at least part of the axial projection of the temperature measuring probe along the water outlet is located within the caliber range of the water outlet.

[0009] Preferably, the distance L by which the projection of the temperature measuring probe along the axial direction of the water outlet end extends into the diameter range of the water outlet port does not exceed the radius R of the water outlet end.

[0010] Preferably, the surface cleaning device includes a floor brush provided with a driving motor, the water spraying member is provided with a water inlet, the driving motor and the heating member are respectively arranged on both sides of the water inlet, the buffering steering member is arranged on the liquid flow channel connecting the heating member and the water spraying member, and the water inlet end and the water outlet end are at a certain angle so that the liquid changes its flow direction in the buffering steering member.

[0011] Preferably, there is an angle θ between the water inlet and the water outlet, and 90°≤θ<180°.

[0012] Preferably, the buffer steering member is arranged below the heating member, and the temperature measuring probe is fixedly matched with the buffer steering member through threads.

[0013] Preferably, a temperature sensing element attached to the outer wall of the heating element is provided on the outside of the heating element, and the temperature sensing element is arranged on the outer wall close to the water inlet and / or water outlet of the heating element to detect whether the heating element is dry-burning.

[0014] Preferably, the liquid supply assembly also includes a bracket for installing a heater, the bracket is provided with an elastic arm for clamping the temperature sensing element so that the temperature sensing element is close to the heating element, the temperature sensing element is arranged between the elastic arm and the heating element, and the bracket is provided with a heat dissipation groove opposite to the temperature sensing element, and the depth of the heat dissipation groove is greater than the height of the temperature sensing element.

[0015] After adopting the above technical solution, the utility model has the following advantages:

[0016] 1. The surface cleaning device provided by the utility model has a buffer steering member arranged downstream of the heating member, the buffer steering member is provided with a temperature measuring end with a temperature measuring probe, the front end face of the temperature measuring probe is arranged opposite to the water inlet end, the liquid flowing from the water inlet end to the water outlet end will first impact the front end face of the temperature measuring probe, the liquid impacted by the front end face of the temperature measuring probe will spread along the circumferential direction of the front end of the temperature measuring probe, the spread liquid flows along the outer peripheral surface of the front end of the temperature measuring probe under the action of inertia and then flows to the water outlet end, the arrangement mode of the temperature measuring probe relative to the water outlet end is reasonably improved, not only the front end face of the temperature measuring probe is directly facing the liquid inflow direction and can effectively contact the liquid flowing from the water inlet end to the water outlet end, but also the front end face of the temperature measuring probe is directly facing the liquid inflow direction and can effectively contact the liquid flowing from the water inlet end to the water outlet end, and the front end face of the temperature measuring probe is also directly facing the liquid inflow direction and can effectively contact the liquid flowing from the water inlet end to the water outlet end. The liquid flowing on the front end surface of the temperature probe contacts the front end surface and then is diverted along the circumference of the temperature measuring probe, so that the outer peripheral surface of the front end of the temperature measuring probe can also effectively contact the liquid flowing from the water inlet end to the water outlet end, thereby improving the temperature measurement uniformity of the temperature measuring probe, thereby improving the temperature measurement accuracy of the temperature measuring probe for the liquid, so that the heating element can reasonably adjust the heating power according to the detection temperature of the temperature measuring probe, so that the liquid heated by the heating element can better meet the preset temperature requirements, and avoid the situation where the heated liquid does not meet the cleaning requirements due to too low heating power of the heating element or is easily overheated and burned due to too high heating power, thereby ensuring the performance stability of the heating element while ensuring that the outlet liquid meets the cleaning requirements.

[0017] 2. The water inlet and the water outlet are connected through a buffer cavity, and the temperature measuring probe is arranged in the buffer cavity. The cross-sectional area of ​​the buffer cavity is preferably larger than the cross-sectional area of ​​the water inlet. The buffer cavity with a larger cross-sectional area has a certain buffering effect on the liquid flowing from the water inlet to the water outlet, and can appropriately slow down the liquid flow rate while allowing the liquid to flow out from the water outlet in a full flow state, and appropriately slow down the liquid flow rate while allowing the liquid to be temporarily stored in the buffer cavity for a short time, so that the liquid fully surrounds the temperature measuring probe, reducing the influence of water ripples, small bubbles, etc. during the liquid flow process on the temperature measurement result of the temperature measuring probe. On the other hand, the temperature measuring probe is arranged in the buffer cavity, so that the outer diameter of the front end of the temperature measuring probe can be appropriately increased, so that the area of ​​the front end surface of the temperature measuring probe and the area of ​​the outer peripheral surface of the front end of the temperature measuring probe can be appropriately increased, thereby increasing the temperature measurement area that the temperature measuring probe can contact with the liquid, which can further improve the temperature measurement uniformity of the temperature measuring probe, which is conducive to further improving the temperature measurement accuracy of the temperature measuring probe for the liquid.

[0018] 3. The front end of the temperature probe is arranged on the central axis of the water inlet end, so that the front end face of the temperature probe can be better arranged relative to the water inlet end, so that the liquid flowing from the water inlet end to the water outlet end directly flows to the front end face of the temperature probe, ensuring effective contact between the liquid and the front end face of the temperature probe, thereby making the temperature probe respond more quickly during temperature measurement. In addition, the front end of the temperature probe can be arranged as centered as possible relative to the central axis of the water inlet end, so that the liquid that contacts the front end face of the temperature probe can be evenly diverted along the outer peripheral surface of the front end of the temperature probe as much as possible, so that the outer peripheral surface of the front end of the temperature probe can evenly and effectively contact the liquid, ensuring the effectiveness and uniformity of the contact between the front end of the temperature probe and the liquid, and further improving the temperature measurement accuracy of the temperature probe for the liquid.

[0019] 4. At least part of the axial projection of the temperature probe along the water outlet is located within the caliber of the water outlet. The arrangement of the temperature probe relative to the water outlet is reasonably set so that the front end face and the front end outer peripheral surface of the temperature probe can fully contact the liquid flowing from the water inlet end to the water outlet end, thereby ensuring the temperature measurement accuracy of the temperature probe on the liquid.

[0020] 5. The distance L of the temperature probe along the axial projection of the water outlet end into the water outlet port diameter range is preferably not more than the radius R of the water outlet end, that is, the front end face of the temperature probe will not cross the central axis of the water outlet end. The distance of the temperature probe extending into the axial projection range of the water outlet end is reasonably set to ensure that the front end of the temperature probe can fully contact the liquid while reducing the resistance of the temperature probe to the liquid flowing from the water inlet end to the water outlet end, ensuring the water output of the buffer steering component, thereby ensuring that the water spray volume of the water spray component can meet the cleaning requirements.

[0021] 6. The driving motor and the heating element are respectively arranged on opposite sides of the water inlet of the water spraying element, so that the heating element is arranged as far away from the driving motor as possible, so as to minimize the temperature rise effect of the heat emitted by the heating element on the driving motor and ensure the performance stability of the driving motor. The buffer steering element is arranged on the liquid flow channel connecting the heating element and the water spraying element. The water inlet and water outlet of the buffer steering element are arranged at a certain angle. The liquid changes its flow direction when it flows from the water inlet to the water outlet in the buffer steering element. Preferably, there is an angle θ between the water inlet and the water outlet, 90°≤θ<180°. The angle between the water inlet and the water outlet is reasonably set, so that the liquid flowing through the buffer steering element is buffered while reducing the resistance of the liquid flowing from the water inlet to the water outlet, ensuring that the temperature measuring probe can effectively and fully contact the liquid flowing from the water inlet to the water outlet, and also ensuring that the water output of the buffer steering element can meet the cleaning requirements.

[0022] 7. The buffer steering member is preferably disposed below the heating member, so that the temperature measuring end is located below the heating member, and the adverse effect of the hot air flowing upward when the heating member is heated on the temperature measuring probe is minimized, which is conducive to improving the temperature measurement accuracy of the temperature measuring probe on the liquid. The temperature measuring probe and the buffer steering member are fixedly matched by threads, and the threaded match can maintain a reliable sealing match between the temperature measuring probe and the buffer steering member to prevent liquid from leaking from the assembly of the temperature measuring probe and the buffer steering member.

[0023] 8. A temperature sensing element is provided on the outside of the heating element. The temperature sensing element is in contact with the outer wall of the heating element. The temperature sensing element is provided on the outer wall of the water inlet and / or the water outlet. When an abnormality occurs in the liquid supply component and causes the heating element to dry-burn, the temperature of the heating element at the water inlet and the water outlet will increase sharply. The temperature sensing element is reasonably provided in its relative position to the heating element. When an abnormality such as dry-burning occurs in the heating element, the temperature sensing element can quickly detect the abnormal temperature of the heating element, so that the heating element can be controlled to stop heating in time. When the temperature sensing element is provided close to the water inlet, when the liquid supply component is short of water, the water inlet at the water inlet is insufficient or no liquid flows into the heating element from the water inlet, the heating element enters a dry-burning state, and the temperature of the outer wall of the heating element increases sharply. The temperature sensing element located at the water inlet can detect the dry-burning situation when the water tank cannot provide liquid or sufficient liquid for the heating element, and promptly issue an abnormal alarm or actively handle the abnormal situation to ensure the safety of electricity use. When the temperature sensing element is set close to the water outlet, when a sharp increase in the temperature of the heating element near the water outlet is detected, it indicates that there is a lack of liquid or no liquid in the heating element. At this time, an abnormal alarm is issued or the abnormal situation is actively handled, thereby improving the accuracy of the temperature sensing element in detecting dry burning of the heating element and reducing misjudgments.

[0024] 9. The heating element is arranged on the bracket, and the bracket is provided with an elastic arm. The temperature sensing element is clamped between the heating element and the elastic arm, so that the temperature sensing element can be closely attached to the outer wall of the heating element under the clamping action of the elastic arm. The installation structure of the heating element and the temperature sensing element is reasonably arranged, so that the temperature sensing element can effectively contact the outer wall of the heating element, and the temperature measurement accuracy of the temperature sensing element is ensured. A heat dissipation groove is arranged on the bracket, and the depth of the heat dissipation groove is greater than the height of the temperature sensing element. The heating element and the outside air can flow through the heat dissipation groove, so that the heat of the heating element corresponding to the temperature sensing element can be diffused outward through the heat dissipation groove, avoiding the accumulation of heat between the heating element and the temperature sensing element and affecting the accurate temperature sensing of the temperature sensing element, and improving the temperature measurement accuracy of the temperature sensing element to the heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a liquid supply assembly in a surface cleaning device in Example 1;

[0026] Figure 2 This is a diagram showing the matching structure of the buffer steering member and the temperature measuring probe in the surface cleaning device of the first embodiment;

[0027] Figure 3It is a structural diagram of a buffering and steering member in a surface cleaning device of Example 1;

[0028] Figure 4 It is a top view of the internal structure of the floor brush in the surface cleaning device of Example 1;

[0029] Figure 5 This is a diagram of the entire surface cleaning device of Example 1;

[0030] Figure 6 is a cross-sectional view of a floor brush in a surface cleaning device of Example 1 along the front-to-back direction;

[0031] Figure 7 for Figure 4 A cross-sectional view of the floor brush along the AA direction shown in FIG.

[0032] Figure 8 for Fig. 9 The cross-sectional view along the BB direction;

[0033] Fig. 9 This is a diagram of the coordination structure of the heating element and the bracket in the surface cleaning device of Example 1.

[0034] In the figure, 100-liquid supply component, 110-water tank, 120-water spraying member, 130-heating member, 131-heating channel, 132-water inlet, 133-water outlet, 140-buffer steering member, 141-water inlet end, 141a-water inlet joint, 141b-water inlet hole, 142-water outlet end, 142a-water outlet joint, 142b-water outlet hole, 143-temperature measuring end, 143a-temperature measuring joint, 143b-buffer cavity, 144-sealing ring, 150-temperature measuring probe, 151-detection head, 1511-front end surface, 1512-outer peripheral surface, 160-water pump, 170-temperature sensing member,

[0035] 200-body, 210-handlebar,

[0036] 300-floor brush, 310-floor brush body, 320-front cover, 321-water inlet, 330-installation cavity, 340-cleaning part, 350-sewage suction port, 360-scraping part, 370-elastic floor scraper,

[0037] 410-driving motor, 420-transmission structure,

[0038] 500-Control Panel,

[0039] 600- bracket, 610- upper frame, 620- lower frame, 630- elastic arm, 640- heat sink,

[0040] 710-sewage bucket, 720-sewage suction fan. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0042] It should be noted that the surface cleaning device in the embodiment of the utility model can be a handheld cleaning machine with a handle and manually operated by a user, such as a handheld floor scrubber, a handheld floor mopper, a handheld vacuum cleaner, etc.; it can also be a cleaning robot with drive wheels, which can control the movement of the drive wheels according to a pre-written program and control the cleaning rollers to clean the floor.

[0043] Embodiment 1

[0044] Combination Figures 1 to 9 The first embodiment of the utility model provides a surface cleaning device with a liquid supply component, the surface cleaning device includes a liquid supply component 100, the liquid supply component 100 includes a water tank 110, a water spray component 120 and a heating component 130, the water tank 110 and the water spray component 120 are connected through the heating component 130 so that the liquid flowing out of the water tank 110 flows to the water spray component 120 after being heated, and a buffer diversion component 140 is also provided downstream of the heating component 130, the buffer diversion component 140 includes a water inlet end 141, a water outlet end 142 and a temperature measuring end 143 provided with a temperature measuring probe 150, and the front end surface 1511 of the temperature measuring probe 150 is arranged opposite to the water inlet end 141, so that the liquid flowing in from the water inlet end 141 contacts with the front end surface 1511 of the temperature measuring probe 150 and is diverted along the circumference of the temperature measuring probe 150.

[0045] The front end face 1511 of the temperature measuring probe 150 is arranged opposite to the water inlet end 141. The liquid flowing from the water inlet end 141 to the water outlet end 142 will first impact the front end face 1511 of the temperature measuring probe 150. The liquid impacted by the front end face 1511 of the temperature measuring probe 150 will spread out along the circumference of the front end of the temperature measuring probe 150. The spread liquid flows along the outer peripheral surface 1512 of the front end of the temperature measuring probe 150 under the action of inertia and then flows to the water outlet end 142. Reasonable improvement of the arrangement of the temperature measuring probe 150 relative to the water outlet 142 not only makes the front end surface 1511 of the temperature measuring probe 150 directly face the liquid inflow direction and can effectively contact the liquid flowing from the water inlet 141 to the water outlet 142, but also the liquid flowing toward the front end surface 1511 of the temperature measuring probe 150 contacts the front end surface 1511 and then is diverted along the circumference of the temperature measuring probe 150, so that the outer peripheral surface 1512 of the front end of the temperature measuring probe 150 can also effectively contact the liquid flowing from the water inlet 141 to the water outlet 142, thereby improving The temperature measurement uniformity of the temperature measuring probe 150 can improve the temperature measurement accuracy of the temperature measuring probe 150 on the liquid, so that the heating element 130 can reasonably adjust the heating power according to the detection temperature of the temperature measuring probe 150, so that the liquid heated by the heating element 130 can better meet the preset temperature requirements, and avoid the situation where the heating element 130 causes the heated liquid to fail to meet the cleaning requirements due to too low heating power or easily overheats and burns out due to too high heating power, thereby ensuring the performance stability of the heating element 130 and ensuring that the output liquid meets the cleaning requirements.

[0046] Combination Figure 2 , Figure 3 As a preferred solution of the present embodiment, the water inlet end 141 of the buffer steering member 140 is provided with a hollow water inlet joint 141a, the hollow inner cavity of the water inlet joint 141a forms a water inlet hole 141b, the water outlet end 142 of the buffer steering member 140 is provided with a hollow water outlet joint 142a, the hollow inner cavity of the water outlet joint 142a forms a water outlet hole 142b, the buffer steering member 140 is provided with a hollow temperature measuring joint 143a at the temperature measuring end 143, the hollow inner cavity of the temperature measuring joint 143a forms a buffer cavity 143b, the buffer cavity 143b is connected with the water inlet hole 141b and the water outlet hole 142b at the same time, and the liquid flows into the water inlet hole 141b and flows to the water outlet hole 142b through the buffer cavity 143b. As a preferred solution of the present embodiment, the buffer steering member 140 is integrally injection molded, that is, the water inlet joint 141a, the water outlet joint 142a and the temperature measuring joint 143a are integrally molded.

[0047] As a feasible solution of this embodiment, the temperature measuring probe 150 is arranged on the flow path of the liquid through the temperature measuring joint 143a, and the temperature measuring probe 150 is arranged in the buffer cavity 143b. The front end of the temperature measuring probe 150 is provided with a detection head 151 located in the buffer cavity 143b and protruding toward the water inlet hole 141b, and the front end surface 1511 of the detection head 151 is arranged facing the water inlet hole 141b. The temperature measuring joint 143b provided with the buffer cavity and the temperature measuring probe 150 provided with the detection head 151 together constitute the temperature measuring end 143. Specifically, the temperature measuring probe 150 is arranged with a thin front and a thick back, and the buffer cavity 143b is in a stepped cavity shape with a thin front and a thick back. The circumferential outer wall of the temperature measuring probe 150 is provided with an external thread, and the inner wall of the buffer cavity 143b is provided with an internal thread. The temperature measuring probe 150 is tightened in the buffer cavity 143b through threaded matching, and the temperature measuring probe 150 and the temperature measuring joint 143a maintain a reliable sealing match through threaded matching. In order to further improve the sealing reliability between the temperature measuring probe 150 and the buffer joint, a sealing ring 144 is provided between the rear end of the temperature measuring joint 143a and the rear end of the temperature measuring probe 150 to be clamped by the two.

[0048] Figure 2 The straight line E in the figure represents the central axis of the water inlet hole 141b. As a preferred solution of this embodiment, the front end face 1511 of the detection head 151 is preferably arranged perpendicular to the straight line E, and the outer peripheral surface 1512 of the detection head 151 is preferably arranged parallel to the straight line E, so that the front end face 1511 of the temperature measuring probe 150 is arranged opposite to the water inlet end 141, so that the front end face 1511 and the outer peripheral surface 1512 of the detection head 151 can more fully contact the liquid flowing in from the water inlet hole 141b. As an alternative solution of this embodiment, the detection head 151 can also be arranged in a tapered shape with a thin front and a thick back, that is, the outer peripheral surface 1512 of the detection head 151 is a tapered surface. In this case, the outer peripheral surface 1512 of the detection head 151 has a certain inclination angle relative to the straight line E.

[0049] Combination Figure 3As a preferred solution of this embodiment, the cross-sectional area of ​​the buffer cavity 143b along the direction perpendicular to the axial direction is preferably larger than the cross-sectional area of ​​the water inlet hole 141b and the water outlet hole 142b along the direction perpendicular to the axial direction. In this way, the inner diameter D3 of the buffer cavity 143b is larger than the inner diameter D1 of the water inlet hole 141b and the inner diameter D2 of the water outlet hole 142b. The buffer cavity 143b with a larger cross-sectional area has a certain buffering effect on the liquid flowing from the water inlet end 141 to the water outlet end 142, and can appropriately slow down the liquid flow rate while allowing the liquid to flow out from the water outlet end 142 in a full flow state, and appropriately slow down the liquid flow rate while allowing the liquid to be temporarily stored in the buffer cavity 143b for a short time, so that the liquid fully surrounds the detection head 151 of the temperature measuring probe 150, reducing the influence of water ripples, small bubbles, etc. on the temperature measurement result of the detection head 151 during the liquid flow process. On the other hand, the temperature measuring probe 150 is arranged in the buffer cavity 143b, so that the outer diameter of the detection head 151 can be appropriately increased, so that the area of ​​the front end surface of the detection head 151 and the area of ​​the outer peripheral surface of the detection head 151 can be appropriately increased, thereby increasing the temperature measuring area of ​​the liquid that the detection head 151 can contact, and can further improve the temperature measurement uniformity of the temperature measuring probe 150, which is conducive to further improving the temperature measurement accuracy of the temperature measuring probe 150 for the liquid. In this embodiment, the inner diameter D1 of the water inlet hole 141b and the inner diameter D2 of the water outlet hole 142b are preferably set to be consistent, and the ratio of the inner diameter D3 of the buffer cavity 143b to the inner diameter D1 of the water inlet hole 141b is about 2. Of course, as an optional scheme of this embodiment, the inner diameter D1 of the water inlet hole 141b can also be set slightly larger than the inner diameter D2 of the water outlet hole 142b, and the ratio of the inner diameter D3 of the buffer cavity 143b to the inner diameter D1 of the water inlet hole 141b can also be set to 1.5, 1.6, 1.7, 1.8, 1.9, 2.1, 2.2 or other reasonable sizes.

[0050] As a preferred solution of this embodiment, the detection head 151 at the front end of the temperature measuring probe 150 is preferably arranged on the central axis of the water inlet end 141, that is, the central axis of the water inlet hole 141b shown by the straight line E passes through the detection head 151, so that the front end face 1511 of the detection head 151 can be better arranged relative to the water inlet end 141, so that the liquid flowing from the water inlet end 141 to the water outlet end 142 directly flows to the front end face 1511 of the detection head 151, ensuring effective contact between the liquid and the front end face of the detection head 151, thereby making the temperature measuring probe 150 respond more quickly during temperature measurement. Furthermore, the central axis of the detection head 151 is preferably arranged to coincide with the central axis of the water inlet hole 141b shown by the straight line E, that is, the detection head 151 is arranged in the center relative to the straight line E, so that the liquid after contacting the front end surface 1511 of the detection head 151 can be diverted as evenly as possible along the outer peripheral surface 1512 of the detection head 151, thereby making the front end surface 1511 and the outer peripheral surface 1512 of the detection head 151 can be evenly and effectively contacted with the liquid, ensuring the effectiveness and uniformity of the contact between the detection head 151 and the liquid. In this embodiment, the outer diameter D4 of the detection head 151 is slightly smaller than the inner diameter D1 of the water inlet hole 141b, so that the front end surface 1511 of the detection head 151 can be completely located within the axial projection range of the water inlet hole 141b.

[0051] In order to ensure that the detection head 151 can fully contact the liquid flowing from the water inlet hole 141b to the water outlet hole 142b, at least part of the axial projection of the detection head 151 along the water outlet end 142 is located within the caliber range of the water outlet end 142, that is, at least part of the detection head 151 extends into the axial projection range of the water outlet hole 142b. At the same time, in order to prevent the detection head 151 from causing excessive resistance to the liquid flowing from the water inlet hole 141b to the water outlet hole 142b, the distance of the detection head 151 extending into the axial projection range of the water outlet hole 142b should not be too large. Preferably, the distance L of the axial projection of the detection head 151 extending into the caliber range of the water outlet end 142 does not exceed the radius R of the water outlet end 142. Figure 2 The straight line F in the figure represents the central axis of the water outlet 142b, the straight lines M and N represent the axial projection range of the water outlet 142b respectively, and the straight line P represents the axial projection position of the front end face 1511 of the detection head 151 along the water outlet 142b. The straight line P is located between the straight line M and the straight line N, so that at least part of the axial projection of the detection head 151 along the water outlet end 142 is located within the axial projection range of the water outlet 142b. Further, the straight line P is located between the straight line E and the straight line N, so that the distance L of the axial projection of the detection head 151 along the water outlet end 142 into the caliber range of the water outlet 142b does not exceed the radius R of the water outlet 142b, and the distance between the straight line P and the straight line N is L, L≤R. Of course, L should not be too small, otherwise it is not conducive to ensuring that the detection head 151 can fully contact the liquid. Preferably, 0.5*R≤L≤R.

[0052] In this embodiment, the water inlet end 141 and the water outlet end 142 are arranged at a certain angle. When the liquid flows through the buffer steering member 140, the flow direction is changed in the buffer steering member 140. The liquid flowing in from the water inlet end 141 flows toward the temperature measuring probe 150. After part of the liquid contacts the front end surface 1511 of the detection head 151, it is diverted along the outer peripheral surface 1512 of the detection head 151 to surround and wrap the detection head 151, so that the liquid is fully in contact with the detection head 151. On the other hand, the liquid is stored in the buffer cavity 143b for a short time during the flow from the water inlet end 141 to the water outlet end 142, which appropriately slows down the speed of the liquid flowing into the water outlet end 142, and can reduce the bubbles mixed in the liquid. In order to appropriately reduce the resistance of the liquid flowing from the water inlet end 141 to the water outlet end 142 in the buffer steering member 140, there is an angle θ between the water inlet end 141 and the water outlet end 142, 90°≤θ<180°. In this embodiment, the angle between the straight line E and the straight line F is θ, and θ is preferably set to 90°. As other feasible solutions of this embodiment, the angle θ can also be set to 95°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 175° or other reasonable values.

[0053] Combination Figure 5 This embodiment is described by taking a handheld surface cleaning machine as an example. The surface cleaning device includes a body 200 and a floor brush 300. The upper end of the body 200 is provided with a handle bar 210. The lower end of the body 200 is pivotally connected to the rear side of the floor brush 300. Figure 4 , Figure 6 The floor brush 300 includes a floor brush body 310 and a front cover 320, and the front cover 320 is detachably mounted on the front side of the floor brush body 310. When the front cover 320 is mounted on the front side of the floor brush body 310, the front cover 320 cooperates with the floor brush body 310 to form an installation cavity 330. The floor brush 300 is provided with a cleaning member 340 detachably mounted in the installation cavity 330, and a driving motor 410 is provided in the floor brush body 310, and the driving motor 410 drives the cleaning member 340 to rotate through a transmission structure 420. The cleaning member 340 can adopt a single roller brush structure, a double roller brush structure spaced apart from front to back, or a crawler mop structure, which is not restricted here.

[0054] As a feasible solution of this embodiment, the water tank 110 can be detachably installed on the body 200 or the floor brush 300, the water spraying member 120 is arranged on the front side of the floor brush body 310, the water spraying member 120 is provided with a water receiving port 321 and a water spraying hole arranged toward the cleaning member 340, in order to allow the liquid in the water tank 110 to flow smoothly to the water spraying member 120, the liquid supply assembly 100 also includes a water pump 160, the water tank 110, the water pump 160, the heating member 130, the buffer diverting member 140 and the water spraying member 120 are distributed in sequence from upstream to downstream and are connected in sequence through pipelines, that is, the buffer diverting member 140 is provided on the liquid flow channel connecting the heating member 130 and the water spraying member 120. The liquid in the water tank 110 flows along the pipeline to the heating element 130 under the pumping action of the water pump 160. The liquid heated by the heating element 130 flows to the water spraying element 120 through the buffering diverting element 140. The liquid flowing into the water spraying element 120 from the water inlet 321 is sprayed from the water spraying hole to the cleaning element 340. After the cleaning element 340 absorbs the liquid and moistens it, it can wet-mop the surface to be cleaned or perform self-cleaning. As a preferred solution of this embodiment, the water spraying element 120 can adopt the prior art method of connecting a water inlet channel according to two N (N is a natural number) to divert the water into a plurality of water outlet waterways, which will not be described in detail here. As an alternative to the present embodiment, the water spraying member 120 may also be disposed in the front cover 320 and a waterway connection structure may be provided between the front cover 320 and the floor brush body 310. The water spraying hole on the water spraying member 120 may be disposed toward the cleaning member 340 or toward the surface to be cleaned. Of course, two water spraying members 120 may also be provided in the front cover 320, wherein the water spraying hole on one of the water spraying members is disposed toward the cleaning member 340 and the water spraying hole on the other water spraying member is disposed toward the surface to be cleaned. The two water spraying members may be connected to the end of the pipeline of the liquid supply assembly 100 through a control valve, and the control valve may adjust the flow direction of the liquid according to work needs.

[0055] Combination Figure 4 In this embodiment, the water inlet 321 is arranged approximately in the center of the floor brush 300 in the left-right direction. In order to reduce the temperature rise effect of the heat generated by the heating element 130 on the driving motor 410, as a preferred solution of this embodiment, the driving motor 410 and the heating element 130 are respectively arranged on the left and right sides of the water inlet 321, so that the heating element 130 can be arranged as far away from the driving motor 410 as possible.

[0056] Combination Figure 7 As a preferred solution of this embodiment, in order to reduce the adverse effects of the upward flowing hot air on the temperature measuring probe 150 when the heating element 130 is heating, the buffering diverter 140 is preferably arranged below the heating element 130 to prevent the upward flowing hot air from heating the temperature measuring probe 150 and causing the temperature measuring probe 150 to inaccurately measure the temperature of the liquid.

[0057] Combination Figure 8In order to prevent the heating element 130 from drying out due to water shortage, a temperature sensing element 170 is provided on the outside of the heating element 130 and is attached to the outer wall of the heating element 130. The temperature sensing element 170 is arranged on the outer wall near the water inlet 132 or the water outlet 133 of the heating element 130 to detect whether the heating element 130 is drying out. In this embodiment, the heating element 130 is horizontally installed in the floor brush body 310 through the bracket 600. The heating element 130 preferably adopts the structure with a heating channel 131 in the prior art. The heating element 130 has a water inlet 132 and a water outlet 133. The water inlet 132 and the water outlet 133 are respectively arranged at both ends of the heating element 130 and are respectively connected to the two ends of the heating channel 131. The liquid flowing in from the water inlet 132 is heated when flowing through the heating channel 131. The heated liquid flows out through the water outlet 133 and flows to the buffer diverter 140. When the temperature sensing element 170 is arranged near the water inlet 132, when the liquid supply component is short of water, the water inlet 132 is insufficient or no liquid flows into the heating element 130 from the water inlet 132, and the heating element 130 enters a dry-burning state. The temperature of the outer wall of the heating element 130 increases sharply. The temperature sensing element 170 located at the water inlet 132 can detect the dry-burning situation when the water tank cannot provide liquid or sufficient liquid for the heating element 130, and promptly issue an abnormal alarm or actively handle the abnormal situation to ensure the safety of electricity use. When the temperature sensing element 170 is arranged near the water outlet 133, when it is detected that the temperature of the heating element 130 near the water outlet 133 increases sharply, it means that there is a lack of liquid or no liquid in the heating element 130. At this time, an abnormal alarm is issued or the abnormal situation is actively handled, which improves the accuracy of the temperature sensing element 170 in detecting the dry-burning of the heating element 130 and reduces misjudgment. As a feasible solution of this embodiment, only one heating element 130 is provided and is arranged near the water inlet 132 of the heating element 130; or, only one heating element 130 is provided and is arranged near the water outlet 133 of the heating element 130; or, two heating elements 130 are provided and are respectively arranged near the water inlet 132 and the water outlet 133 of the heating element 130.

[0058] Combination Figure 8As an implementable solution of this embodiment, the bracket 600 includes an upper frame 610 and a lower frame 620 fixed together, and the upper frame 610 and the lower frame 620 enclose a cavity for installing the heating element 130. In order to make the temperature sensing element 170 close to the outer wall of the heating element 130, one end of the upper frame 610 or the lower frame 620 is provided with an elastic arm 630 with one side positioned and the other side suspended, and the temperature sensing element 170 is clamped between the elastic arm 630 and the heating element 130. Specifically, the minimum distance between the elastic arm 630 and the outer wall of the heating element 130 is slightly smaller than the thickness of the temperature sensing element 170, and the elastic arm 630 can undergo a certain degree of elastic deformation. The elastic arm 630 that undergoes elastic deformation can make the temperature sensing surface of the temperature sensing element 170 closely attached to the outer wall of the heating element 130, which is conducive to ensuring the sensing accuracy of the temperature sensing element 170. The temperature sensing element 170 can adopt existing temperature sensors and other components, which will not be repeated here. As an alternative to the present embodiment, the elastic arms of the temperature sensing member 170 may also be simultaneously acted on the upper frame 610 and the lower frame 620 .

[0059] Combination Fig. 9 As a preferred solution of this embodiment, the bracket 600 is provided with a heat dissipation groove 640 opposite to the temperature sensing element 170, and the depth of the heat dissipation groove 640 is greater than the height of the temperature sensing element 170. In this embodiment, two heat dissipation grooves 640 are arranged at intervals along the length direction of the heating element 130, and the portion of the bracket 600 located between the two heat dissipation grooves 640 forms an elastic arm 630, and the lowest point of the heat dissipation groove 640 is lower than the bottom surface of the temperature sensing element 170, and the heating element 130 and the outside air can flow through the heat dissipation groove 640, so that the heat of the heating element 130 corresponding to the temperature sensing element 170 can be diffused outward through the heat dissipation groove 640, avoiding the accumulation of heat between the heating element 130 and the temperature sensing element 170 and affecting the accurate temperature sensing of the temperature sensing element 170, thereby improving the temperature measurement accuracy of the temperature sensing element 170 for the heating element 130. As an alternative solution of this embodiment, the heat dissipation grooves 640 can also be arranged in three, four or other reasonable numbers corresponding to the temperature sensing element 170.

[0060] In this embodiment, a control board 500 is provided inside the body 200, and electrical components such as the water pump 160, the heating element 130, the temperature measuring probe 150, the temperature sensing element 170, and the driving motor 410 are electrically connected and / or signal-connected to the control board 500. Other structures of the floor brush 300 can refer to the handheld surface cleaning machine in the prior art. For example, the floor brush body 310 is provided with a sewage suction port 350 connected to the installation cavity 330, a scraping member 360 is provided above the sewage suction port 350 and used to scrape the cleaning member 340, and an elastic floor scraper 370 is provided below the sewage suction port 350 and can contact the surface to be cleaned. For another example, the surface cleaning device also includes a sewage suction component, and the sewage suction component includes components such as a sewage bucket 710 and a sewage suction fan 720. The sewage suction fan 720 provides suction to form a sewage suction airflow from the sewage suction port 350 to the sewage bucket 710. The dirt at the sewage suction port 350 can flow into the sewage bucket 710 along the sewage suction airflow to achieve the collection of the dirt.

[0061] When the surface cleaning device is working or self-cleaning, the liquid supply assembly 100 supplies liquid to the cleaning element 340, and the liquid in the water tank 110 flows to the heating element 130 under the pumping action of the water pump 160. The liquid heated by the heating element 130 flows to the water spraying element 120 after flowing through the buffer diverting element 140. When the liquid flows through the buffer diverting element 140, it flows in from the water inlet hole 141b and flows out from the water outlet hole 142b. When the liquid flows in from the water inlet hole 141b and flows through the buffer cavity 143b, The liquid contacts the front end surface 1511 of the detection head 151, then flows through the outer peripheral surface 1512 of the detection head 151 after being diverted along the circumference of the detection head 151. The liquid flowing through the buffer cavity 143b flows to the water spraying member 120 through the water outlet 142b. The liquid flowing into the water spraying member 120 from the water inlet 321 can be sprayed onto the cleaning member 340 through the water spraying hole. The cleaning member 340 absorbs the liquid and wets it. The cleaning member 340 wetted by the liquid can wipe the surface to be cleaned or perform self-cleaning. The temperature measuring probe 150 detects the liquid flowing through the buffer cavity 143b and feeds back the detected liquid temperature signal to the control board 500. The control board 500 can control the heating power of the heating member 130 according to the liquid temperature signal, so that the liquid heated by the heating member 130 meets the preset temperature value of the corresponding heating gear, so that the heated liquid can better meet the cleaning requirements. The temperature sensing element 170 detects the temperature of the heating element 130. When the heating element 130 is out of water and boils dry, the temperature of the heating element 130 increases sharply. The temperature sensing element 170 feeds back the temperature signal of the heating element 130 to the control board 500. The control board 500 controls the power on and off of the heating element 130 according to the temperature signal fed back by the temperature sensing element 170, so that the heating element 130 can stop heating or reduce the heating power in time when abnormal conditions such as water outage and boils dry occur, so as to avoid the situation where the heating element 130 is overheated and causes damage to itself or other components. Of course, a water spray hole can also be set toward the surface to be cleaned. When the surface cleaning device is working, the liquid supply component 100 can spray the heated liquid onto the surface to be cleaned, so that the stubborn stains on the surface to be cleaned can be softened by heat.

[0062] In addition to the above preferred embodiments, the present invention has other implementation schemes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not deviate from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims

1. A surface cleaning device with a liquid supply assembly, the surface cleaning device comprising a liquid supply assembly, the liquid supply assembly comprising a water tank, a water spraying member and a heating member, the water tank and the water spraying member being connected through the heating member so that the liquid flowing out of the water tank flows to the water spraying member after being heated, characterized in that: A buffering diverting member is also provided downstream of the heating member, and the buffering diverting member includes a water inlet end, a water outlet end and a temperature measuring end provided with a temperature measuring probe, and the front end face of the temperature measuring probe is arranged opposite to the water inlet end so that the liquid flowing in from the water inlet end contacts the front end face of the temperature measuring probe and is diverted along the circumference of the temperature measuring probe.

2. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: The buffer diverter also includes a buffer cavity which is connected to the water inlet and the water outlet at the same time. The temperature measuring probe is arranged in the buffer cavity and the cross-sectional area of ​​the buffer cavity is larger than the cross-sectional area of ​​the water inlet.

3. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: The front end of the temperature measuring probe is arranged on the central axis of the water inlet end.

4. A surface cleaning device with a liquid supply assembly according to claim 3, characterized in that: At least part of the temperature measuring probe projected along the axial direction of the water outlet is located within the caliber range of the water outlet.

5. A surface cleaning device with a liquid supply assembly according to claim 4, characterized in that: The distance L of the projection of the temperature measuring probe along the axial direction of the water outlet end into the diameter range of the water outlet end does not exceed the radius R of the water outlet end.

6. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: The surface cleaning device includes a floor brush provided with a driving motor, the water spraying member is provided with a water inlet, the driving motor and the heating member are respectively arranged on both sides of the water inlet, the buffering steering member is arranged on a liquid flow channel connecting the heating member and the water spraying member, and the water inlet end and the water outlet end are at a certain angle so that the liquid changes its flow direction in the buffering steering member.

7. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: There is an angle θ between the water inlet and the water outlet, 90°≤θ<180°.

8. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: The buffer steering member is arranged below the heating member, and the temperature measuring probe is fixedly matched with the buffer steering member through threads.

9. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: The outside of the heating element is provided with a temperature sensing element attached to the outer wall of the heating element. The temperature sensing element is arranged on the outer wall close to the water inlet and / or the water outlet of the heating element to detect whether the heating element is dry-burning.

10. A surface cleaning device with a liquid supply assembly according to claim 1, characterized in that: The liquid supply assembly also includes a bracket for installing a heater, the bracket is provided with an elastic arm for clamping the temperature sensing element so that the temperature sensing element is close to the heating element, the temperature sensing element is arranged between the elastic arm and the heating element, and the bracket is provided with a heat dissipation groove opposite to the temperature sensing element, and the depth of the heat dissipation groove is greater than the height of the temperature sensing element.

Images