Steam cleaning machine and heating device thereof

Abstract

The utility model discloses a steam cleaning machine and a heating device thereof, the heating device of the steam cleaning machine comprises a shell, a heating body and a temperature sensor, the shell is provided with a water inlet and a steam outlet, and the heating body is installed in an inner cavity of the shell. The temperature sensor is installed on the shell, the distance between a probe of the temperature sensor and the heating body is smaller than the distance between the probe of the temperature sensor and the water inlet and / or the distance between the probe of the temperature sensor and the heating body is smaller than the distance between the probe of the temperature sensor and the steam outlet, and the probe of the temperature sensor comprises an exposed metal wire. Meanwhile, the influence of the temperature of the water inlet and / or the steam outlet on the probe temperature measurement accuracy is reduced, the accuracy of the probe for measuring the temperature of the heating body is improved, power is cut off when the temperature of the heating body exceeds the preset temperature, continuous heating of the heating body due to overhigh temperature is avoided, and therefore the steam discharge temperature stability of the steam outlet in the steam cleaning machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a steam cleaner and its heating device. Background Technology

[0002] Steam cleaners use high-temperature steam to accelerate the movement of molecules on the dirt surface, thereby breaking the binding force between them to remove various stubborn stains. The cleaning solution is heated by a heating device to form high-temperature steam.

[0003] In traditional heating devices, the heating element is installed inside the housing, and the temperature of the heating element is controlled by a temperature sensor installed on the housing.

[0004] However, the operation control of the heating element in a traditional steam cleaner lags behind the actual set temperature, resulting in unstable steam discharge temperature at the steam outlet of the steam cleaner.

[0005] Therefore, how to improve the stability of the steam discharge temperature at the steam outlet of a steam cleaner is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a steam cleaner and its heating device to improve the stability of the steam discharge temperature at the steam outlet of the steam cleaner.

[0007] The heating element of the steam cleaner provided in this application includes:

[0008] A housing, wherein the housing is provided with a water inlet and a steam outlet;

[0009] A heating element, which is installed inside the housing cavity;

[0010] A temperature sensor is mounted on the housing. The distance between the probe of the temperature sensor and the heating element is less than the distance between the probe of the temperature sensor and the water inlet and / or the distance between the probe of the temperature sensor and the heating element is less than the distance between the probe of the temperature sensor and the steam outlet. The probe of the temperature sensor includes an exposed metal wire.

[0011] Optionally, in the heating device of the steam cleaner described above, the outer wall of the heating element is provided with a concave temperature measuring cavity, and the probe of the temperature sensor extends into the temperature measuring cavity.

[0012] Optionally, in the heating device of the steam cleaner described above, the probe of the temperature sensor touches the bottom of the temperature measuring chamber.

[0013] Optionally, in the heating device of the steam cleaner described above, the aperture of the temperature measuring chamber is 2mm-5mm, and the depth of the temperature measuring chamber is 3mm-10mm.

[0014] Optionally, in the heating device of the steam cleaner described above, the opening of the temperature measuring chamber is an annular guide surface that gradually expands outward toward the opening end.

[0015] Optionally, in the heating device of the steam cleaner described above, the probe of the temperature sensor is attached to the surface of the heating element.

[0016] Optionally, the heating device of the steam cleaner described above also includes a heating element, the main body of which is located inside the housing, and the distance between the probe of the temperature sensor and the heating element is less than or equal to 15 mm.

[0017] Optionally, in the heating device of the steam cleaner described above, the probe of the temperature sensor is located directly below the steam outlet and above the heating tube.

[0018] Optionally, the heating device of the steam cleaner described above also includes a heating tube electrode, which is connected to one end of the heating tube located outside the housing. The heating tube electrode and the temperature sensor are installed on the same side of the housing.

[0019] A steam cleaner includes a nozzle, a heating element, and a water tank connected to the heating element. The nozzle is connected to the steam outlet of the heating element, and the cleaning source in the water tank is delivered to the heating element by a water pump. The heating element is any of the heating elements described above.

[0020] In the above technical solution, the heating device of the steam cleaner provided by this utility model includes a housing, a heating element, and a temperature sensor. The housing is provided with a water inlet and a steam outlet, and the heating element is installed in the inner cavity of the housing. The temperature sensor is installed in the housing, and the distance between the temperature sensor probe and the heating element is less than the distance between the temperature sensor probe and the water inlet and / or the distance between the temperature sensor probe and the heating element is less than the distance between the temperature sensor probe and the steam outlet. The temperature sensor probe includes an exposed metal wire.

[0021] As described above, in the steam cleaner provided in this application, the temperature sensor probe includes an exposed metal wire, which improves the temperature measurement accuracy of the temperature sensor. The distance between the temperature sensor probe and the heating element is less than the distance between the temperature sensor probe and the water inlet and / or less than the distance between the temperature sensor probe and the steam outlet, reducing the impact of the water inlet and / or steam outlet temperatures on the probe's temperature measurement accuracy. This, in turn, improves the accuracy of the probe in measuring the heating element's temperature, allowing for power-off when the heating element exceeds a preset temperature, preventing continuous heating due to excessively high temperatures. Therefore, this application improves the stability of the steam discharge temperature at the steam outlet position in the steam cleaner. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A schematic diagram of the heating device of the steam cleaner provided in this embodiment of the utility model;

[0024] Figure 2 This is a partial enlarged view of the heating device of the steam cleaner provided in an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional view of the heating device of the steam cleaner provided in an embodiment of the present invention.

[0026] in Figure 1-3 middle:

[0027] 1-Housing, 101-Water inlet, 102-Steam outlet, 2-Temperature sensor, 201-Metal wire, 3-Heating element electrode, 4-Heating element. Detailed Implementation

[0028] The core of this invention is to provide a steam cleaner and its heating device to improve the stability of the steam discharge temperature at the steam outlet of the steam cleaner.

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Please refer to Figure 1 and Figure 3 As shown.

[0031] In one specific embodiment, the heating device of the steam cleaner provided by this utility model includes a housing 1, a heating element, and a temperature sensor 2. The housing 1 is provided with a water inlet 101 and a steam outlet 102, and the heating element is installed in the inner cavity of the housing 1. Specifically, the housing 1 can be a plastic housing or a metal housing, etc. Considering that the heating device contains a heating element and the overall temperature is relatively high, in order to extend the service life of the housing 1 and improve the safety of the steam cleaner, it is preferable that the housing 1 is a metal housing, for example, an aluminum housing, an iron housing, or a stainless steel housing, etc.

[0032] Temperature sensor 2 is installed in housing 1. The distance between the probe of temperature sensor 2 and the heating element is less than the distance between the probe of temperature sensor 2 and the water inlet 101.

[0033] Alternatively, the distance between the probe of temperature sensor 2 and the heating element can be less than the distance between the probe of temperature sensor 2 and the steam outlet 102.

[0034] In one embodiment, the probe of temperature sensor 2 is attached to the surface of the heating element. For example, the probe is bonded to the surface of the heating element by an adhesive. This configuration improves the accuracy of the probe in measuring the temperature of the heating element.

[0035] In another specific embodiment, to further improve the accuracy of the probe in measuring the temperature of the heating element, the outer wall of the heating element is provided with a concave temperature measuring cavity, into which the probe of the temperature sensor 2 extends. Specifically, preferably, the circumferential direction of the temperature measuring cavity is fitted to the probe of the temperature sensor 2.

[0036] For ease of manufacturing, the temperature measuring cavity is preferably cylindrical. Specifically, the aperture of the temperature measuring cavity is 2mm-5mm, for example, 3mm or 4mm.

[0037] The depth of the temperature measuring cavity is 3mm-10mm. Preferably, the depth of the temperature measuring cavity is adapted to the probe length of the temperature sensor 2. However, the aperture and depth of the temperature measuring cavity are not limited to the above ranges and can be adjusted as needed.

[0038] Furthermore, in order to further improve the accuracy of the probe in measuring the temperature of the heating element, the probe of temperature sensor 2 touches the bottom of the temperature measuring cavity, at which point the end of the probe is set to abut against the bottom of the temperature measuring cavity.

[0039] To facilitate probe insertion into the temperature measuring cavity, the opening of the temperature measuring cavity is preferably an annular guide surface that gradually expands outwards towards the opening end. Specifically, the annular guide surface can be a conical structure.

[0040] like Figure 2As shown, the probe of temperature sensor 2 includes an exposed metal wire 201, meaning that the temperature-sensing part of the probe has its metal sheath and insulation layer removed, leaving only the exposed metal wire 201. Because the probe includes an exposed metal wire 201, the measured temperature is not affected by the metal sheath and insulation layer, reducing thermal resistance, lowering measurement errors and temperature sensing hysteresis, thus improving the temperature measurement accuracy of temperature sensor 2 and ensuring the stability of steam.

[0041] In this application, since the distance between the probe of temperature sensor 2 and the heating element is less than the distance between the probe of temperature sensor 2 and the water inlet 101 and the steam outlet 102, the influence of the temperature of the water inlet 101 and the steam outlet 102 on the accuracy of the probe's temperature measurement is reduced, that is, the influence of water flow fluctuations on temperature sensor 2 is reduced, thereby improving the accuracy of the probe in measuring the temperature of the heating element. This allows for power-off when the heating element exceeds the preset temperature, preventing the heating element from continuously heating due to excessively high temperature. Therefore, this application improves the stability of the steam discharge temperature at the steam outlet 102 position in the steam cleaner.

[0042] Based on the above solutions, the heating device of the steam cleaner also includes a heating element 4. The main body of the heating element 4 is located inside the housing 1, and the distance between the probe of the temperature sensor 2 and the heating element 4 is less than or equal to 15mm. For example, the distance between the probe of the temperature sensor 2 and the heating element 4 is less than or equal to 10mm. Specifically, the heating element 4 can be an electric heating element.

[0043] Furthermore, the heating device also includes a flow channel disposed within the housing 1, with the two ends of the flow channel connected to a water inlet 101 and a steam outlet 102, respectively, and the flow channel spirally wound around the outer periphery of the heating tube 4. Because the flow channel is spirally wound around the outer periphery of the heating tube 4, the heating tube 4 can quickly exchange heat with the cleaning liquid in the flow channel.

[0044] Considering the heat rise, in order to further bring the temperature measured by temperature sensor 2 closer to the temperature of the heating element, preferably, the probe of temperature sensor 2 is located directly below steam outlet 102 and above heating tube 4.

[0045] In one specific embodiment, the heating device of the steam cleaner further includes a heating element electrode 3, which is connected to one end of the heating element 4 located outside the housing 1. During assembly, one end of the heating element 4 protrudes outward from the housing 1. The heating element electrode 3 and the temperature sensor 2 are installed on the same side of the housing 1 for easy centralized external wiring.

[0046] This application provides a steam cleaner including a nozzle, a heating element, and a water tank connected to the heating element. The nozzle is connected to the steam outlet 102 of the heating element. The cleaning agent in the water tank is delivered to the heating element via a water pump. The heating element can be any of the aforementioned heating elements. The specific structure of the heating element has been described above; this application includes the aforementioned heating element and also achieves the above-mentioned technical effects.

[0047] When the steam cleaner is working, a water pump provides power to draw cold water from the water tank into the heating element through the inlet 101. The heating element heats the cold water into steam, which is then discharged through the steam outlet 102 and sprayed out from the nozzle. A temperature sensor 2 is installed on the heating element and connected to the control system to control the temperature and pressure of the steam. In actual operation, the steam cleaner can have multiple temperature control modes, which are the same as conventional methods, and the user can set them according to their needs.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heating device for a steam cleaner, characterized in that, include: The housing (1) is provided with a water inlet (101) and a steam outlet (102); A heating element is installed inside the housing (1); A temperature sensor (2) is mounted on the housing (1). The distance between the probe of the temperature sensor (2) and the heating element is less than the distance between the probe of the temperature sensor (2) and the water inlet (101) and / or the distance between the probe of the temperature sensor (2) and the heating element is less than the distance between the probe of the temperature sensor (2) and the steam outlet (102). The probe of the temperature sensor (2) includes an exposed metal wire (201).

2. The steam generator of claim 1, wherein the heating element is a coil of wire. The outer wall of the heating element is provided with a concave temperature measuring cavity, and the probe of the temperature sensor (2) extends into the temperature measuring cavity.

3. The steam generator of claim 2, wherein the heating element is a coil of wire. The probe of the temperature sensor (2) touches the bottom of the temperature measuring cavity.

4. The steam generator of claim 2, wherein the heating element is a coil of wire. The aperture of the temperature measuring cavity is 2mm-5mm, and the depth of the temperature measuring cavity is 3mm-10mm.

5. The steam generator of claim 2, wherein the heating element is a coil of wire. The opening of the temperature measuring cavity is a ring-shaped guide surface that gradually expands outward from the opening end.

6. The steam generator of claim 1, wherein The probe of the temperature sensor (2) is attached to the surface of the heating element.

7. The heat generating device of a steam cleaner according to any one of claims 1 to 6, characterized in that, It also includes a heating element (4), the main body of which is located inside the housing (1), and the distance between the probe of the temperature sensor (2) and the heating element (4) is less than or equal to 15 mm.

8. The steam generator of claim 7, wherein the heating element is a coil of wire. The probe of the temperature sensor (2) is located directly below the steam outlet (102) and above the heating tube (4).

9. The steam generator of claim 7, wherein the heating element is a coil of wire. It also includes a heating element electrode (3), which is connected to one end of the heating element (4) located outside the housing (1). The heating element electrode (3) and the temperature sensor (2) are installed on the same side of the housing (1).

10. A steam cleaner characterized by, It includes a nozzle, a heating device, and a water tank connected to the heating device. The nozzle is connected to the steam outlet (102) of the heating device. The cleaning source in the water tank is delivered to the heating device by a water pump. The heating device is the heating device according to any one of claims 1-9.

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