Roller washing machine

Abstract

The embodiment of the utility model provides a drum washing machine which comprises an outer drum, an inner drum rotationally arranged in the outer drum, a heater, a power output part, a heat conduction assembly and a plurality of temperature sensing switches, the heat conduction assembly comprises a plurality of heat conduction parts, and the heat conduction parts are arranged at different positions of the surface of the heater; the heat-conducting component is used for at least exchanging heat with the surface of the heater at the position; a temperature sensing switch is connected between the two heat conduction parts, is communicated with the heat conduction parts, and at least exchanges heat with the heat conduction parts; the heat conduction component and the temperature sensing switch are alternately connected to form a series access and then connected between the power output component and the heater, and the temperature sensing switch is configured to control the heater and the power output component to be electrically disconnected when the temperature of the temperature sensing switch reaches a preset temperature. Any temperature sensing switch is switched off when detecting that the temperature of the temperature sensing switch reaches the preset temperature, so that the heater can be switched off in time no matter which position of the heater is abnormal in temperature, and the safety of the roller washing machine is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of washing machines, in particular to a drum washing machine. BACKGROUND

[0002] In the traditional water heater of the drum washing machine, the dry burning high temperature protection of the heater is generally realized by the on-off mode of the resistance. In the application background of the washing machine, the fuse temperature of the resistance fuse material is generally set to 130-180 DEG C. However, in the actual situation, the temperature of the heater surface is far higher than the resistance fuse temperature due to the non-uniformity of the process distribution before the circuit fuse protection. It is found through research that the local temperature of part of the heater exceeds 500 DEG C.

[0003] In the related art, the heater is directly connected to the temperature control switch, and the heater is powered off by the temperature control switch, but there is still a problem that the heater is not closed in time.

[0004] Therefore, the present application is proposed. Practical new type content

[0005] The embodiment of the present application provides a drum washing machine, heat conduction components and temperature sensing switches are arranged at different positions of the surface of the heater, and a loop is formed by the heat conduction components, the temperature sensing switches, the heater and the power output component. When the local temperature of the surface of the heater reaches a preset temperature, the temperature sensing switch is disconnected to stop the power output component from providing heat to the heater, so that the technical effect that the heater can be powered off in time when the local temperature is abnormal is achieved.

[0006] In a first aspect, the embodiment of the present application provides a drum washing machine, which comprises a box body, an outer drum arranged in the box body, and an inner drum rotatably arranged in the outer drum, wherein the inner drum has a clothes cavity for accommodating clothes:

[0007] The drum washing machine further comprises a heater and a power output component, wherein the heater is mounted between the outer drum and the inner drum of the drum washing machine, and the heater is used for heating water in the outer drum; the power output component is electrically connected with the heater, and the heater is used for providing electric energy to the heater;

[0008] The drum washing machine comprises a heat conduction assembly and a plurality of temperature sensing switches, the heat conduction assembly comprises a plurality of heat conduction components, the heat conduction components are arranged at different positions of the surface of the heater, and the heat conduction components are used for at least exchanging heat with the surface of the heater at the positions;

[0009] The two heat conduction components are connected with the temperature sensing switch, the temperature sensing switch is communicated with the heat conduction components, and the temperature sensing switch at least exchanges heat with the heat conduction components;

[0010] The heat-conducting components and the temperature-sensing switches are alternately connected to form a serial connection path between the power output component and the heater, and the temperature-sensing switch is configured to control the heater and the power output component to be disconnected when the temperature of the temperature-sensing switch reaches a preset temperature.

[0011] The heat-conducting components are arranged at different positions on the surface of the heater, and the temperature changes at different positions can be detected, and a plurality of temperature-sensing switches are connected to form a path between the power output component and the heater. The temperature-sensing switch can be disconnected when the temperature increases to a preset temperature.

[0012] By transmitting the heat received by the heat-conducting components to the temperature-sensing switches, any one of the temperature-sensing switches will be disconnected when the temperature of the temperature-sensing switch reaches a preset temperature, so that the heater can be powered off in time when the temperature of any position of the heater is abnormal, and the safety of the drum washing machine itself is effectively improved.

[0013] In some embodiments, the heat-conducting components at both ends of the heat-conducting assembly are connected between the power output component and the heater, and a temperature-sensing switch is arranged between the two adjacent heat-conducting components in the heat-conducting assembly.

[0014] In some embodiments, a temperature-sensing switch is arranged between the two adjacent heat-conducting components in the heat-conducting assembly.

[0015] The heat-conducting component at one end of the heat-conducting assembly is connected to the power output component, and the heat-conducting component at the other end of the heat-conducting assembly is connected to the temperature-sensing switch and then connected to the heater.

[0016] Alternatively, the heat-conducting component at one end of the heat-conducting assembly is connected to the heater, and the heat-conducting component at the other end of the heat-conducting assembly is connected to the temperature-sensing switch and then connected to the power output component.

[0017] In some embodiments, the heat-conducting components at both ends of the heat-conducting assembly are connected to the temperature-sensing switch and then connected between the power output component and the heater.

[0018] The above four connection modes of the heat-conducting components and the temperature-sensing switches with the power output component and the heater can meet different arrangement scenarios of the heater and improve the universality of the technical solution.

[0019] In some embodiments, the temperature-sensing switch includes a thermistor, one end of the thermistor is connected to an adjacent heat-conducting component, and the other end of the thermistor is connected to another adjacent heat-conducting component. The thermistor is configured to increase its resistance value and reduce its current when the temperature exceeds a preset temperature.

[0020] By setting the temperature-sensing switch as a thermistor, temperature detection and overcurrent protection can be achieved, and the risk of failure caused by single contact adhesion of the wall surface.

[0021] In some embodiments, the temperature-sensitive switch comprises a temperature-sensitive deformation assembly, a first contact and a second contact, wherein the temperature-sensitive deformation assembly comprises at least a first deformation part and a second deformation part having different expansion coefficients, and the first deformation part and the second deformation part are arranged in abutment; the first contact is arranged on the first deformation part, and the second contact is arranged at a position corresponding to the first contact on the second deformation part.

[0022] The first contact is configured to be separated from the second contact when the first deformation part and the second deformation part deform due to their temperature reaching a preset temperature.

[0023] In the above technical solution, the contact is separated by deformation, which has high mechanical action reliability and high anti-current impact capacity.

[0024] In some embodiments, the power output component is arranged between the outer cylinder and the box body, and the two ends of the heater pass through the wall surface of the outer cylinder and are connected to the power output component.

[0025] The power output component and the heater are effectively connected by the above arrangement, thereby avoiding electric leakage.

[0026] In some embodiments, a first sealing part is arranged at the connection between the heater and the wall surface of the outer cylinder. The first sealing part ensures the sealing of the outer cylinder and prevents water leakage.

[0027] In some embodiments, the temperature-sensitive switch is in surface contact with the heater, and the temperature-sensitive switch exchanges heat with the surface of the heater.

[0028] The temperature-sensitive switch can receive heat from both the surface of the heater and the heat-conducting component, thereby expanding the temperature detection range and achieving timely monitoring of the temperature of the surface of the heater.

[0029] In some embodiments, the drum washing machine further comprises a first connecting part arranged on the surface of the heater, and the first connecting part is used for mounting the heat-conducting component.

[0030] Another drum washing machine is also provided in the embodiments of the present application. The drum washing machine comprises a box body, an outer cylinder arranged in the box body, an inner cylinder rotatably arranged in the outer cylinder, and the inner cylinder has a laundry cavity for accommodating laundry:

[0031] The drum washing machine further comprises a heater and a power output component, wherein one end of the heater is mounted on the wall surface of the outer cylinder, the other end of the heater is arranged between the outer cylinder and the inner cylinder, and the heater is used for heating water in the outer cylinder; the power output component is arranged between the box body and the outer cylinder, the power output component is electrically connected to the heater, and the heater is used for providing electric energy to the heater.

[0032] The drum washing machine comprises a heat conduction assembly and a temperature sensing switch, the heat conduction assembly comprises at least one heat conduction component, the heat conduction components are arranged in sequence along the length direction of the surface of the heater, and the heat conduction components exchange heat with the surface of the heater at the positions of the heat conduction components;

[0033] The temperature sensing switch is arranged on the surface of the heater, and exchanges heat with the heat conduction components and the surface of the heater;

[0034] The at least one heat conduction component and the at least one temperature sensing switch are connected in series to form a temperature measuring path, at least one circuit breaker is formed between the heater and the power output component, the number of the temperature measuring paths is consistent with the number of the circuit breakers, the temperature measuring paths are connected into the circuit breakers in correspondence, and the power output component is configured to be disconnected between the power output component and the heater when any temperature sensing switch is disconnected.

[0035] In the drum washing machine, a plurality of circuit breakers are arranged between the power output component and the heater, and a temperature measuring path composed of a temperature sensing switch and a heat conduction component is arranged at the position of the circuit breaker, when the local temperature is too high, the temperature sensing switch is disconnected, and the power output component stops supplying power to the heater when any temperature sensing switch is disconnected, thereby achieving heating protection, and the safety of the heater during operation is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0037] Figure 1 A partial structure diagram of the drum washing machine according to the embodiments of the present application;

[0038] Figure 2 Another partial structure diagram of the drum washing machine according to the embodiments of the present application;

[0039] Figure 3 A Figure 2 An enlarged view of position A in FIG. 4;

[0040] Figure 4 A partial exploded view of the drum washing machine according to the embodiments of the present application;

[0041] Figure 5 A structure diagram of the heater according to the embodiments of the present application;

[0042] Figure 6 A left view of the heater according to the embodiments of the present application;

[0043] Figure 7 AFigure 6 Cross-sectional view of the middle B-B position

[0044] Figure 8 Assembly view of the heater, heat conducting member, and temperature sensitive switch according to the embodiment of the present application

[0045] Figure 9 Left view of the assembly view of the heater, heat conducting member, and temperature sensitive switch according to the embodiment of the present application

[0046] Figure 10 Figure 9 Cross-sectional view of the middle A-A position

[0047] Figure 11 Assembly view of the heater, gas storage member, and pneumatic switch according to the embodiment of the present application

[0048] Figure 12 Left view of the assembly view of the heater, gas storage member, and pneumatic switch according to the embodiment of the present application

[0049] Figure 13 Figure 12 Cross-sectional view of the middle A-A position

[0050] Figure 14 Structure view of the heater, gas storage member, and pneumatic switch according to the embodiment of the present application

[0051] Explanation of reference numerals

[0052] 21 - first cylinder opening; 22 - mounting through hole

[0053] 3 - inner cylinder; 31 - second cylinder opening

[0054] 4 - heater; 41 - mounting member; 411 - hollow portion; 5 - power supply output member

[0055] 6 - heat conducting assembly; 61 - heat conducting member; 7 - temperature sensitive switch

[0056] 8 - pneumatic switch; 9 - gas storage member DETAILED DESCRIPTION

[0057] In order to make the purpose, the embodiments and the advantages of the present application more clear, the following will combine the drawings in the exemplary embodiments of the present application to make a clear and complete description of the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

[0058] ​​It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the embodiments described next, and is not intended to limit the embodiments of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0059] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover, but not exclusively, inclusion, for example, a product or device including a series of components does not have to be limited to those components clearly listed, but can include other components not clearly listed or inherent to these products or devices.

[0060] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0062] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0063] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0064] Reference Figure 1 , Figure 2This application proposes a drum washing machine, which includes a housing for forming the external contour of the drum washing machine.

[0065] Generally, the front of the enclosure is usually positioned facing the user, while the rear is usually positioned facing the wall.

[0066] The front of the machine has a loading and unloading port. Users can use this port to load and unload clothes into the drum washing machine.

[0067] The front-loading washing machine includes a door (not shown in the picture), which is installed at the loading and unloading port in an opening and closing manner. This is used to open or close the loading and unloading port.

[0068] In some embodiments, the door and the body can be connected by a hinge so that the door can rotate about the axis of the hinge, thereby opening and closing the door of the drum washing machine and opening and closing the loading and unloading port on the front side of the body.

[0069] Reference Figure 1 , Figure 2 A drum washing machine includes an outer drum 2, which is located inside the casing. The outer drum 2 is configured as a container for holding washing water, and the interior of the outer drum 2 can be used to hold washing liquids such as water, detergent, fabric softener, etc.

[0070] It should be noted that the front side of the outer cylinder 2 faces the front side of the box body, and the rear end of the outer cylinder 2 faces the rear side of the box body.

[0071] The front end of the outer cylinder 2 is provided with a first cylinder opening 21, which is positioned opposite to the take-out opening.

[0072] The outer cylinder 2 is the outer shell of the entire system, serving to protect the internal components. It can be made of metal, plastic, or other suitable materials. The enclosure is the container that houses the entire system; it can be a standalone equipment frame or part of a larger system.

[0073] Reference Figure 1 The drum washing machine includes an inner drum 3. The inner drum 3 is disposed inside an outer drum 2. The inner drum 3 and the outer drum 2 can rotate relative to each other. The inner drum 3 has a clothes handling chamber for holding clothes.

[0074] It should be noted that the front end of the inner cylinder 3 corresponds to the front end of the outer cylinder 2, and the rear end of the inner cylinder 3 corresponds to the rear end of the outer cylinder 2.

[0075] The inner tube 3 is provided with a second tube opening 31, which is located at the front end of the inner tube 3. The second tube opening 31 is connected to the clothing processing chamber. The second tube opening 31 is correspondingly set with the take-out opening and the first tube opening 21, so that the user can take out or put out clothing into the clothing processing chamber through the take-out opening in sequence through the first tube opening 21 and the second tube opening 31.

[0076] It should be noted that the outer drum 2 and the inner drum 3 are coaxially arranged inside and outside, so that the inner drum 3 can rotate around the axis of the outer drum 2.

[0077] The inner drum 3 includes an inner drum peripheral wall and an inner drum side wall, the inner drum side wall is located at the rear end of the inner drum 3, and the inner drum peripheral wall and the inner drum side wall are connected to each other, and the peripheral wall and the side wall together define the clothes treatment cavity.

[0078] It should be noted that the second drum opening 31 is defined by the inner drum peripheral wall, and the inner drum side wall is arranged opposite to the second drum opening 31 along the front-rear direction of the inner drum 3.

[0079] The inner drum 3 is provided with a communication hole for communicating the inside of the outer drum 2 with the clothes treatment cavity, so that the water in the outer drum 2 can enter the inner drum 3 through the communication hole to wash the clothes in the clothes treatment cavity.

[0080] In some embodiments, the communication hole is provided on the inner drum peripheral wall.

[0081] In some embodiments, the communication hole is provided on the inner drum side wall.

[0082] In some embodiments, the communication hole is provided on the inner drum peripheral wall and the inner drum side wall.

[0083] In some embodiments, the communication hole is provided in multiple, part of the communication holes are provided on the inner drum peripheral wall, and part of the communication holes are provided on the inner drum side wall, and the communication holes provided on the inner drum peripheral wall are arranged in the circumferential direction.

[0084] In some embodiments, referring to Figure 3 , Figure 4 The drum washing machine includes a heater 4. The heater 4 is used to heat the washing water in the outer drum 2.

[0085] In some embodiments, the heater 4 is provided in multiple to meet the heating needs of washing machines of different sizes.

[0086] In some embodiments, the heater 4 is provided as a resistance wire heater. The resistance wire is wound on a metal tube or a ceramic tube, and then the tube is inserted into the outer drum 2 of the drum washing machine. Exemplarily, the heater 4 is provided as a heating tube.

[0087] In some embodiments, the heater 4 is provided as an electromagnetic induction heater, which uses the principle of electromagnetic induction to heat. The electromagnetic induction heater includes a coil, when current passes through the coil, a magnetic field is generated, and the magnetic field generates eddy current at the bottom of the outer drum 2, thereby adding water in the outer drum 2.

[0088] In some embodiments, the heater 4 is installed between the outer drum 2 and the inner drum 3.

[0089] In some embodiments, one end of the heater 4 is mounted on the wall surface of the outer drum 2. The other end of the heater 4 is placed between the outer drum 2 and the inner drum 3. The heater 4 is used for washing water in the outer drum 2.

[0090] In some embodiments, the drum washing machine further comprises a power output component 5. The power output component 5 is used to provide electric energy to the heater 4. The power output component 5 is electrically connected with the heater 4.

[0091] In some embodiments, the power output component 5 is mounted between the cabinet and the outer drum 2, avoiding the risk of electric leakage of the power output component 5.

[0092] In the related art, the heater 4 realizes the dry burning high temperature protection of the heater 4 by the way of resistance fusing. However, due to the problem of the processing technology of the heater 4 itself, the surface temperature of the heater 4 is not uniform. In the use process, when the resistance fusing protection is used, the local temperature of the surface of the heater 4 has already exceeded the safe temperature, which produces a safety hazard.

[0093] In order to solve the above technical problems, in some embodiments, the drum washing machine comprises a heat conduction assembly 6. The heat conduction assembly 6 comprises a plurality of heat conduction components 61.

[0094] The heat conduction component 61 is arranged at different positions of the surface of the heater 4, and the heat conduction component 61 is used for heat exchange with at least the surface of the heater 4 at the position.

[0095] The heat conduction component 61 in the above needs to consider both the heat conduction and the electrical conductivity.

[0096] In some implementation manners, the heat conduction component 61 can be selected from metal materials. For example, the heat conduction component 61 is arranged as copper or aluminum.

[0097] The heat conduction component 61 can be mounted on the surface of the heater 4 by welding, pressing or coating, and directly contacts with the surface of the heater 4. Both the circuit conduction and the efficient heat transfer can be realized.

[0098] In some embodiments, the heat conduction component 61 is fixed on the surface of the heater 4 through a first connecting part.

[0099] The first connecting part is arranged on the surface of the heater 4, and can press the heat conduction component 61 on the surface of the heater 4, so as to ensure the direct contact between the heat conduction component 61 and the heater 4.

[0100] In some embodiments, the heat conduction assembly 6 comprises a plurality of heat conduction components 61. The heat conduction component 61 is arranged at least along the length direction of the surface of the heater 4, and the heat conduction component 61 exchanges heat with the surface of the heater 4 at the position. In this way, the heat conduction component 61 can orderly exchange heat with different positions of the heater 4, and the detection of the leakage point is reduced.

[0101] In some embodiments, the plurality of heat-conducting components 61 can be arranged along the length direction of the surface of the heater 4.

[0102] In some embodiments, the drum washing machine comprises a temperature-sensitive switch 7. The temperature-sensitive switch 7 is configured to be disconnected when its own temperature reaches a preset temperature.

[0103] In some embodiments, the temperature-sensitive switch 7 is arranged in multiple.

[0104] In some embodiments, the heater 4, the temperature-sensitive switch 7, the heat-conducting component 61 and the power output component 5 form a power supply circuit, and the temperature-sensitive switch 7 is configured to control the power supply circuit to be disconnected when its own temperature reaches a preset temperature, and the electrical connection between the power output component 5 and the heater 4 is disconnected.

[0105] In the above, the power supply circuit is formed by the power output component 5, the temperature-sensitive switch 7, the heat-conducting component 61 and the power output component 5, and the temperature-sensitive switch 7 can receive heat from the heat-conducting component 61 and directly from the surface of the heater 4, thereby increasing the temperature detection area and effectively improving the safety of the heater 4 during operation.

[0106] In some embodiments, the temperature-sensitive switch 7 and the heat-conducting component 61 are alternately connected to form multiple sections of the path, and can be connected between different heaters 4 and power output components 5.

[0107] In some embodiments, the temperature-sensitive switch 7 is connected between two heat-conducting components 61. The temperature-sensitive switch 7 is in communication with the two heat-conducting components 61, and the temperature-sensitive switch 7 exchanges heat with at least one of the heat-conducting components 61.

[0108] The heat-conducting component 61 and the temperature-sensitive switch 7 are alternately connected to form a series connection path and are connected between the power output component 5 and the heater 4. The temperature-sensitive switch 7 is configured to control the electrical connection between the heater 4 and the power output component 5 to be disconnected when its own temperature reaches a preset temperature.

[0109] By transferring the heat received by the heat-conducting component 61 to the temperature-sensitive switch 7, any one of the temperature-sensitive switches 7 will be disconnected when its own temperature reaches a preset temperature, so that the heater 4 can be powered off in time when temperature abnormity occurs at any position of the heater 4, thereby effectively improving the safety of the drum washing machine.

[0110] In the above scheme, the single-point detection is adjusted to multi-point detection, and the abnormal heating area on the surface of the heater 4 is covered. Multiple temperature-sensitive switches 7 are arranged to reduce the heat transfer path and improve the response efficiency, thereby realizing multi-point monitoring of the surface temperature of the heater 4 and rapid power-off protection, and improving the safety of the drum washing machine during use.

[0111] The working process of the heat-conducting component 61 and the temperature-sensitive switch 7 in the present application is as follows:

[0112] When the heater 4 is powered on, the heat at each position on the surface of the heater 4 is at least transmitted to the temperature-sensitive switch 7 through the heat-conducting component 61.

[0113] When any temperature-sensitive switch 7 detects that the temperature exceeds the preset temperature, the temperature-sensitive switch 7 is turned off to power off the heater 4.

[0114] After power-off, the heat-conducting component 61 quickly dissipates heat, and the temperature-sensitive switch 7 cools and resets.

[0115] In some embodiments, the heat-conducting components 61 at both ends of the heat-conducting assembly 6 are connected between the power output component 5 and the heater 4; and the temperature-sensitive switch 7 is arranged between the two heat-conducting components 61 in the heat-conducting assembly 6.

[0116] In some embodiments, the temperature-sensitive switch 7 is arranged between the two adjacent heat-conducting components 61 in the heat-conducting assembly 6.

[0117] The heat-conducting component 61 at one end of the heat-conducting assembly 6 is connected to the power output component 5; and the heat-conducting component 61 at the other end of the heat-conducting assembly 6 is connected to the temperature-sensitive switch 7 and then connected to the heater 4.

[0118] In some embodiments, the temperature-sensitive switch 7 is arranged between the two adjacent heat-conducting components 61 in the heat-conducting assembly 6; the heat-conducting component 61 at one end of the heat-conducting assembly 6 is connected to the heater 4; and the heat-conducting component 61 at the other end of the heat-conducting assembly 6 is connected to the temperature-sensitive switch 7 and then connected to the power output component 5.

[0119] In some embodiments, the heat-conducting components 61 at both ends of the heat-conducting assembly 6 are connected to the temperature-sensitive switch 7 and then connected between the power output component 5 and the heater 4.

[0120] The above describes four connection modes of the heat-conducting component 61 and the temperature-sensitive switch 7 with the power output component 5 and the heater 4, which can meet different arrangement scenarios of the heater 4 and improve the universality of the present technical solution.

[0121] In some embodiments, referring to Figure 4 , the outer cylinder 2 is provided with a mounting through hole 22. Referring to Figure 3 , Figure 4 , the two ends of the heater 4 are mounted on the mounting through hole 22 of the outer cylinder 2 through the mounting piece 41.

[0122] Referring to Figure 5 , Figure 6 , Figure 7 , a hollow portion 411 is arranged in the middle of the mounting piece 41 to form an open circuit between the heater 4 and the power output component 5.

[0123] To form the circuit of switching the heater 4 according to the temperature, refer to Figure 8 、 Figure 9 、 Figure 10 The passage composed of the temperature-sensitive switch 7 and the heat-conducting component 61 is connected to the hollow part 411 to form a complete power supply circuit composed of the passage, the heater 4 and the power output component 5.

[0124] When the temperature reaches the set temperature, the temperature-sensitive switch 7 is disconnected, and the power supply circuit is disconnected again. The power supply protection of the heater 4 is realized.

[0125] In some embodiments, the hollow part 411 can be directly connected by the temperature-sensitive switch 7 to form a complete circuit. When the temperature reaches the set temperature, the temperature-sensitive switch 7 is disconnected, and the power supply circuit is disconnected again. The power supply protection of the heater 4 is realized.

[0126] In some embodiments, one, two or more circuits are arranged between the heater 4 and the power output component 5. At least one heat-conducting component 61 and at least one temperature-sensitive switch 7 are connected in series to form a temperature measurement passage. The temperature measurement passage includes at least one temperature-sensitive switch 7 to ensure that the temperature measurement passage can be disconnected again when the temperature is abnormal.

[0127] The number of temperature measurement passages is consistent with the number of circuits. The temperature measurement passage is connected to the position of the circuit. The power output component 5 is configured to be disconnected between the power output component 5 and the heater 4 when any temperature-sensitive switch 7 is disconnected. In the above, one, two or more circuits are arranged between the power output component 5 and the heater 4, and the temperature measurement passage composed of the temperature-sensitive switch 7 and the heat-conducting component 61 is arranged at the position of the circuit.

[0128] When the local temperature is too high, the temperature-sensitive switch 7 will be disconnected. The power output component 5 will stop supplying power to the heater 4 when any temperature-sensitive switch 7 is disconnected, and the heating protection is performed. The safety of the heater 4 during operation is effectively improved.

[0129] In some embodiments, one circuit is arranged between the heater 4 and the power output component 5. One heat-conducting component 61 and one temperature-sensitive switch 7 form a temperature measurement passage and are connected to the circuit. The overheat protection of the heater is realized.

[0130] In some embodiments, several circuits are arranged between the heater 4 and the power output component 5. Several heat-conducting components 61 and several temperature-sensitive switches 7 form several temperature measurement passages and are connected to the corresponding circuits. The overheat protection of the heater is realized.

[0131] It should be noted that the number of heat-conducting components and temperature-sensitive switches and the connection between the power output component and the heater can be adjusted according to the specific settings of the scene, as long as the heat-conducting components and temperature-sensitive switches are arranged at different positions of the heater.

[0132] In some embodiments, the temperature-sensitive switch 7 includes a thermistor, one end of the thermistor is connected to an adjacent heat-conducting component 61, and the other end of the thermistor is connected to another adjacent heat-conducting component 61.

[0133] The thermistor is configured to increase its resistance value when the temperature exceeds a preset temperature, thereby reducing the current passing through the thermistor. This reduces the current passing through the heater 4 and reduces the heating power, thereby forming an over-temperature protection.

[0134] By setting the temperature-sensitive switch 7 as a thermistor, temperature detection and over-current protection can be achieved, and the risk of failure caused by single contact adhesion can be avoided.

[0135] In some embodiments, the temperature-sensitive switch 7 is a PTC thermistor, and the two ends of the thermistor are connected to adjacent heat-conducting components 61 through silver alloy solder joints. When the temperature exceeds a threshold value, the resistance of the thermistor increases sharply, causing the loop current to drop below 0.5 A, thereby achieving circuit interruption. The electronic response time is shorter than that of the temperature control switch in the related art.

[0136] In some embodiments, the temperature-sensitive switch 7 includes a temperature-sensitive deformation assembly, a first contact, and a second contact. The temperature-sensitive deformation assembly includes at least a first deformation part and a second deformation part having different expansion coefficients, and the first deformation part and the second deformation part are arranged in close contact. The first contact is arranged on the first deformation part, and the second contact is arranged at a position corresponding to the first contact on the second deformation part.

[0137] The first contact is configured to separate from the second contact when the first deformation part and the second deformation part deform due to their temperature reaching a preset temperature. When the first contact and the second contact are separated, the temperature-sensitive switch 7 is disconnected, and the electrical connection between the power output component 5 and the heater 4 is disconnected.

[0138] In the above technical solution, the contact is separated by deformation, which has high mechanical action reliability and high resistance to current impact.

[0139] In some embodiments, the temperature-sensitive switch 7 is set as a bimetallic strip temperature-sensitive switch 7. The first deformation part and the second deformation part are set as two metal layers having different thermal expansion coefficients.

[0140] In some embodiments, the temperature-sensitive switch 7 is set as a thermistor and a temperature-sensitive deformation assembly with a first contact and a second contact, and electronic and mechanical double protection is adopted. Even if the contacts are stuck, the current can still be cut off by the change in resistance.

[0141] In some embodiments, the power output component 5 is arranged between the outer cylinder 2 and the cabinet, and both ends of the heater 4 are connected to the power output component 5 after passing through the wall of the outer cylinder 2.

[0142] By achieving the effective connection between the power output component 5 and the heater 4 as described above, the electric leakage is avoided.

[0143] In some embodiments, a first sealing part is arranged at the connection between the heater 4 and the wall of the outer cylinder 2. The sealing of the outer cylinder 2 is ensured by arranging the first sealing part, thereby preventing the outer cylinder 2 from leaking water.

[0144] In some embodiments, the power output component 5 is a nickel-plated copper ring embedded in a nylon bracket between the outer cylinder 2 and the cabinet.

[0145] In some embodiments, the electrode of the heater 4 passes through a ceramic insulating sleeve of the outer cylinder wall, and is bolted to the power output component 5 through a waterproof terminal. The first sealing part at the connection is arranged as a sealing ring.

[0146] In some embodiments, the connection is covered with a fluororubber sealing ring, which is formed into an interference fit by hot pressing.

[0147] In some embodiments, the temperature sensing switch 7 is in contact with the surface of the heater 4, and the temperature sensing switch 7 exchanges heat with the surface of the heater 4.

[0148] The temperature sensing switch 7 can receive heat from both the surface of the heater 4 and the heat conducting component 61, reducing the detection blind area, expanding the temperature detection range, and achieving timely monitoring of the temperature of the surface of the heater 4.

[0149] In some embodiments, the aluminum shell of the temperature sensing switch 7 is attached to the surface of the heater 4 through heat-conducting silicone grease, and is welded to the adjacent heat conducting component 61. When the heater 4 is locally overheated, heat is transferred to the temperature sensing switch 7 through two paths.

[0150] By arranging the heat conducting component 61 and the temperature sensing switch 7 on the surface of the heater 4, multi-node temperature detection and physical breakpoint setting are achieved, and the risk of overheating and fire is eliminated. The heat conducting component 61 shortens the heat transfer path, and the delay of the protection action is reduced.

[0151] In some embodiments, with reference to Figure 11 , Figure 12 , Figure 13 , Figure 14 , the drum washing machine comprises a gas storage component 9. The gas storage component 9 is arranged on the surface of the heater 4. The gas storage component 9 has a gas storage cavity inside for sealing gas, and the gas in the gas storage cavity can exchange heat with the surface of the heater 4. The gas pressure in the gas storage cavity is configured to increase with the increase of temperature.

[0152] In some embodiments, the gas storage component 9 is arranged in multiple numbers, and is arranged at different positions on the surface of the heater 4. In this way, the gas storage cavity can detect the temperature change at different positions, and multi-point detection can be achieved to avoid missing detection.

[0153] In some embodiments, the drum washing machine further comprises pneumatic switches 8. The pneumatic switches 8 are arranged correspondingly to the gas storage components 9. The pneumatic switches 8 are connected to the corresponding gas storage cavities, and are configured to be disconnected when the gas pressure in the connected gas storage cavity reaches a preset gas pressure.

[0154] The pneumatic switches 8 are arranged in multiple numbers. The multiple pneumatic switches 8 are connected between the heater 4 and the power output component 5 to form a power supply circuit, and the power output component 5 is configured to stop supplying power to the heater 4 when any of the pneumatic switches 8 is disconnected.

[0155] By arranging the gas storage components 9 at different positions on the heater 4, the temperature at each position of the heater 4 can be detected. When the temperature at a local position of the gas storage component 9 is too high, the gas pressure in the gas storage cavity is higher than the preset gas pressure, and the pneumatic switch 8 at this position is disconnected. The power output component 5 stops heating the heater 4, and the power supply protection of the heater 4 is achieved.

[0156] In some embodiments, the multiple pneumatic switches 8 are connected between the heater 4 and the power output component 5. The multiple pneumatic switches 8 can be connected in series between the heater 4 and the power output component 5.

[0157] In some embodiments, the multiple pneumatic switches 8 are connected in series, and are divided into at least a first branch and a second branch. The first branch, the heater 4, the second branch, and the power output component 5 are connected in sequence to form a circuit.

[0158] It can be understood that those skilled in the art can also adjust the connection mode of the pneumatic switch 8, the heater 4, and the power output component 5 according to actual needs, so as to control whether the heater 4 is powered on according to the on-off of the pneumatic switch 8.

[0159] In some embodiments, with reference to Figure 5 , Figure 6 , Figure 7 The two ends of the heater 4 are mounted on the outer drum 2 by the mounting member 41.

[0160] A hollow portion 411 is arranged in the middle of the mounting member 41 to form a disconnection between the heater 4 and the power output component 5.

[0161] To form the circuit of the switch of the heater 4 according to the temperature adjustment, the pneumatic switch 8 is connected to the hollow part 411 by the reference 12-14. The pneumatic switch 8 is used to connect the heater 4 and the power output part 5. To form a complete power supply circuit composed of the pneumatic switch 8, the heater 4, and the power output part 5. When the temperature reaches the preset temperature, the gas pressure in the gas storage cavity is higher than the preset gas pressure, the pneumatic switch 8 is disconnected, and the power output part 5 stops supplying power to the heater 4.

[0162] In some embodiments, the pneumatic switch 8 includes a shell connected between the heater 4 and the power output part 5.

[0163] The pneumatic switch 8 further includes a piston installed on the shell. The piston can move with the gas pressure in the gas storage cavity to realize the connection or disconnection of the pneumatic switch 8.

[0164] By setting the pneumatic switch 8, the direct use of electrical energy is not involved, the safety is high, and the wear of the pneumatic switch 8 is small and the life is longer. The starting pipeline of the pneumatic switch 8 can be laid relatively long, and the remote control is facilitated.

[0165] In some embodiments, the gas storage part 9 and the heater 4 are connected through the first mounting seat, so that the gas in the gas storage cavity can exchange heat with different positions between the heater 4.

[0166] It can be known that the gas storage cavity is usually made of high-temperature resistant material to withstand temperature changes during heating.

[0167] In some embodiments, the first mounting seat tightly connects the gas storage cavity and the heater 4. This can be achieved by threaded connection, flange connection or other suitable mechanical connection methods. Ensure that heat can be effectively transferred between the two.

[0168] Through this connection method, the gas in the gas storage cavity can exchange heat with different positions of the heater 4, thereby achieving the effect of detecting temperature changes at different positions. For example, the heater 4 can be distributed at different positions of the gas storage cavity, so that the gas can obtain temperature changes at different positions when passing through the gas storage cavity to perform temperature detection and timely power-off protection.

[0169] In some embodiments, the pneumatic switch 8 is arranged between the outer cylinder 2 and the box body. The two ends of the gas storage part 9 pass through the wall surface of the outer cylinder 2 and communicate with the pneumatic switch 8.

[0170] The pneumatic switch 8 is located between the outer cylinder 2 and the box body, and can be affected by the temperature changes at different positions of the heater 4 to change the gas pressure in the gas storage cavity, thereby realizing the opening or closing of the pneumatic switch 8 and realizing the precise control of the system.

[0171] The two ends of the gas storage component 9 pass through the wall of the outer cylinder 2 and are connected to the inlet and outlet of the pneumatic switch 8 respectively. This allows the gas in the gas storage cavity to flow through the pneumatic switch 8. In some embodiments, a second sealing part is provided at the connection between the gas storage component 9 and the wall.

[0172] A second sealing part is provided at the connection between the gas storage component 9 and the wall of the outer cylinder 2. This is usually a rubber ring or a sealing member made of other elastic materials to prevent gas leakage.

[0173] The provision of the second sealing part ensures the sealing of the outer cylinder 2, preventing water in the outer cylinder 2 from seeping out of the connection, ensuring the working efficiency and safety of the entire system.

[0174] In addition to the second sealing part, additional sealing measures may be provided at other key connections to ensure the sealing of the entire system.

[0175] In some embodiments, multiple gas storage components 9 are arranged along the length direction of the surface of the heater 4. In some implementations, the multiple gas storage components 9 are evenly distributed on the surface of the heater 4. This avoids the occurrence of detection blind spots.

[0176] In some embodiments, a single gas storage component 9 is arranged along the width direction of the surface of the heater 4.

[0177] In some embodiments, with reference to Figure 11 , Figure 12 , Figure 13 , Figure 14 , the gas storage component 9 is provided as one. The heater 4 is provided as a heating pipe.

[0178] The gas storage component 9 is arranged along the extension direction of the heating pipe itself, the gas in the gas storage cavity is configured to exchange heat with the surface of the heating pipe, and the gas pressure of the gas storage cavity is configured to increase with the increase of temperature.

[0179] It should be noted that the example shown in the figure is that the heater 4 is provided as a heating pipe, and one gas storage component 9 is provided on one heating pipe. This is only an example. In addition, the heater 4 can also be provided as multiple heating pipes. Or one or more gas storage components 9 are provided on each heating pipe. Those skilled in the art can select the number according to the scene demand and the type of the heater 4.

[0180] In some embodiments, the heater 4 is provided as a heating pipe, the heating pipe is provided as a cylindrical structure, the cylindrical structure is bent, and the gas storage component 9 is arranged along the length direction of the cylindrical structure.

[0181] It can be known that the extension direction of the heater 4 is the length direction of the heating pipe when the heating pipe is not bent.

[0182] In some embodiments, the drum washing machine comprises a pneumatic switch 8, the pneumatic switch 8 is communicated with the gas storage component 9, the pneumatic switch 8 is configured to be disconnected when the gas pressure in the communicated gas storage cavity reaches a preset gas pressure; the pneumatic switch 8, the heater 4 and the power output component 5 form a power supply circuit.

[0183] By arranging the gas storage component 9 along the extension direction of the heating pipe, the temperature changes at different positions of the heating pipe can be received, the extension direction is detected without missing points, and when the heating pipe has local temperature abnormalities, power-off protection can be performed in time, thereby ensuring the safety of the drum washing machine during operation.

[0184] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0185] In order to facilitate explanation, the above description has been made in combination with specific embodiments. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained according to the above teachings. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. A drum washing machine, characterized in that, include: Box; The outer cylinder is located inside the box. The inner tube is rotatably disposed inside the outer tube, and the inner tube has a clothing processing cavity for accommodating clothing; A heater is disposed between the outer cylinder and the inner cylinder, and the heater is used to heat the water in the outer cylinder; A power output component is electrically connected to the heater, and the power output component is used to provide electrical energy to the heater; Thermal conductive components, including: Multiple heat-conducting components are disposed at different positions on the surface of the heater, and the heat-conducting components are used to exchange heat with the surface of the heater at least at their respective positions; Multiple temperature-sensing switches are provided, with one temperature-sensing switch connected between two of the heat-conducting components. The temperature-sensing switch is connected to the heat-conducting component and exchanges heat with at least one of the heat-conducting components. The heat-conducting component and the temperature-sensing switch are alternately connected to form a series path and then connected between the power output component and the heater. The temperature-sensing switch is configured to control the heater and the power output component to disconnect the electrical connection when its own temperature reaches a preset temperature.

2. The drum washing machine according to claim 1, characterized in that, The heat-conducting components at both ends of the heat-conducting assembly are connected between the power output component and the heater; A temperature-sensing switch is provided between the two heat-conducting components in the heat-conducting assembly.

3. The drum washing machine according to claim 1, characterized in that, The temperature-sensing switch is provided between two adjacent heat-conducting components in the heat-conducting assembly; The heat-conducting component at one end of the heat-conducting assembly is connected to the power output component; The heat-conducting component at the other end of the heat-conducting assembly is connected to the heater after being connected to a temperature-sensing switch; Alternatively, the heat-conducting component at one end of the heat-conducting assembly is connected to the heater; The heat-conducting component at the other end of the heat-conducting assembly is connected to the temperature-sensing switch and then to the power output component.

4. The drum washing machine according to claim 1, characterized in that, The heat-conducting components at both ends of the heat-conducting assembly are connected to the temperature-sensing switch and then connected between the power output component and the heater.

5. The drum washing machine according to any one of claims 1-4, characterized in that, The temperature-sensing switch includes a thermistor, one end of which is connected to an adjacent heat-conducting component, and the other end of which is connected to another adjacent heat-conducting component. The thermistor is configured such that its resistance increases and the current flowing through it decreases when the temperature exceeds a preset temperature.

6. The drum washing machine according to any one of claims 1-4, characterized in that, The temperature sensing switch includes: A temperature-sensitive deformation component, the temperature-sensitive deformation component including at least a first deformation part and a second deformation part with different coefficients of thermal expansion, the first deformation part and the second deformation part being fitted together; The first contact point is located at the first deformed part; The second contact is located on the second deformable part at a position corresponding to the first contact. The first contact is configured to separate from the second contact when the first deformable part and the second deformable part deform due to their own temperature reaching a preset temperature.

7. The drum washing machine according to any one of claims 1-4, characterized in that, The power output component is disposed between the outer cylinder and the housing; The heater's two ends pass through the wall of the outer cylinder and are connected to the power output component.

8. The drum washing machine according to any one of claims 1-4, characterized in that, The temperature-sensing switch is in contact with the surface of the heater, and the temperature-sensing switch exchanges heat with the surface of the heater.

9. The drum washing machine according to any one of claims 1-3, characterized in that, It also includes a first connecting portion disposed on the surface of the heater, the first connecting portion being used to mount the heat-conducting component.

10. A drum washing machine, characterized in that, include: Box; The outer cylinder is located inside the box. The inner tube is rotatably disposed inside the outer tube, and the inner tube has a clothing processing cavity for accommodating clothing; A heater is disposed between the outer cylinder and the inner cylinder, and the heater is used to heat the water in the outer cylinder; A power output component is electrically connected to the heater, and the power output component is used to provide electrical energy to the heater; Thermal conductive components, including: At least one heat-conducting component, and a plurality of said heat-conducting components are arranged sequentially at least along the length direction of the surface of the heater, and said heat-conducting components exchange heat with the surface of the heater at their respective locations; A temperature-sensing switch is disposed on the surface of the heater, and the temperature-sensing switch exchanges heat with the heat-conducting component and the surface of the heater; At least one of the heat-conducting components and at least one temperature-sensing switch are connected in series to form a temperature measurement path, and at least one open circuit is formed between the heater and the power output component; The number of temperature measurement paths is the same as the number of disconnections, and the temperature measurement paths are connected to the disconnections accordingly. The power output component is configured such that when any of the temperature-sensing switches is turned off, the electrical connection between the power output component and the heater is broken.

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