CN106592188B - Steam ironing equipment and evaporator thereof - Google Patents

Abstract

The present invention discloses an evaporator of a steam ironing device, comprising a metal shell for holding water, a probe arranged in the metal shell and used to detect the water level, and a controller electrically connected to the probe, wherein the probe is arranged at the top of the metal shell and a gap is arranged between the probe and the bottom of the metal shell, and the controller can output a high-frequency voltage to the probe so that the probe forms a capacitor with the water surface in the metal shell, and the controller can detect the state change of the capacitor. Even if there is an oxide layer or scale on the probe surface, or distilled water is used, it will not affect the formation of the capacitor, ensuring that the water level detection function will not be affected by the water quality and fail, and the water level can be stably and accurately detected, thereby improving safety. The present invention also discloses a steam ironing device comprising the above evaporator.

Description

Steam ironing equipment and its evaporator

technical field

The invention relates to the field of home furnishing, in particular to an evaporator of steam ironing equipment. In addition, the present invention also relates to a steam ironing device comprising the above-mentioned evaporator.

Background technique

Steam ironing equipment is widely used in daily life and clothing enterprises, etc., by turning water into steam to iron clothes. Existing steam ironing equipment generally includes a water tank, an evaporator and a water pump. The water pump transports water from the water tank to the evaporator, and the evaporator turns the water into steam. In order to ensure the stable operation of the equipment, it is necessary to detect the amount of water in the evaporator, so that when the amount of water is insufficient, the generation of steam will be stopped to prevent equipment damage and avoid potential safety hazards.

The existing detection method is to install a probe in the metal shell of the evaporator, the metal shell and the probe are respectively connected to the positive and negative electrodes, and the probe is in contact with the water to form a loop. According to the change of the detected resistance value in the loop, that is Water level detection can be realized. However, this method is easy to form an oxide layer or scale on the surface of the probe, affecting the accuracy of the circuit resistance judgment, or using distilled water, which cannot form a circuit, which will lead to equipment failure and pose a safety hazard.

Therefore, how to provide an evaporator capable of stably and accurately detecting the water level is a technical problem currently to be solved by those skilled in the art.

Contents of the invention

The object of the present invention is to provide an evaporator of steam ironing equipment, which can detect the water level stably and accurately, and improve safety. Another object of the present invention is to provide a steam ironing device including the above-mentioned evaporator, which can detect the water level stably and accurately and improve safety.

In order to solve the above-mentioned technical problems, the present invention provides an evaporator for steam ironing equipment, which includes a metal shell for holding water, a probe arranged in the metal shell for detecting the water level and electrically connecting the probe a controller, the probe is arranged on the top of the metal shell with a space between the bottom of the metal shell, the controller can output a high-frequency voltage to the probe, so that the probe The needle forms a capacitance with the water surface in the metal casing, and the controller can detect the state change of the capacitance.

Preferably, the controller is specifically a micro-control unit, and the micro-control unit is provided with a power supply for outputting the high-frequency voltage.

Preferably, the micro-control unit is provided with an output interface for outputting the high-frequency voltage and a detection interface for detecting the state change of the capacitance.

Preferably, the voltage value of the high-frequency voltage is less than or equal to 5V, and the frequency value of the high-frequency voltage is greater than 10KHz.

Preferably, the output voltage of the power supply is less than 24V.

Preferably, the metal shell is specifically a stainless steel shell.

Preferably, a temperature detector communicatively connected to the controller is also arranged in the metal casing.

The present invention also provides a steam ironing device, comprising a casing and an evaporator disposed in the casing, the evaporator being specifically the evaporator described in any one of the above.

Preferably, the steam ironing device is specifically a steam iron.

The invention provides an evaporator of steam ironing equipment, which comprises a metal casing for holding water, a probe arranged in the metal casing for detecting the water level and a controller for electrically connecting the probe, the probe is arranged in the metal casing There is a gap between the top of the body and the bottom of the metal shell, the controller can output high-frequency voltage to the probe, so that the probe forms a capacitance with the water surface in the metal shell, and the controller can detect the state change of the capacitance. The water turns into steam in the metal shell, and the position of the water surface changes in real time. Since the high-frequency voltage is output to the probe, and because there is a gap between the probe 2 and the bottom of the metal shell 1, when the water level drops, the probe 2 is separated from the water surface. But when it is close to the water surface, there will be a capacitive effect. The probe and the water surface form a capacitance, and the high-frequency current can pass through. When the water level changes, the capacitance state will change synchronously. At the same time, the controller detects the state change of the capacitance to realize the control of the water level. detection. Even if there is an oxide layer or scale on the surface of the probe, or distilled water is used, it will not affect the formation of capacitance, ensuring that the water level detection function will not be invalidated by water quality, and can detect the water level stably and accurately, improving safety.

The present invention also provides a steam ironing device including the above-mentioned evaporator. Since the above-mentioned evaporator has the above-mentioned technical effect, the above-mentioned steam ironing device should also have the same technical effect, and will not be described in detail here.

Description of drawings

Fig. 1 is a structural schematic diagram of a specific embodiment of the evaporator provided by the present invention.

Detailed ways

The core of the present invention is to provide an evaporator of steam ironing equipment, which can detect the water level stably and accurately and improve safety. Another core of the present invention is to provide a steam ironing device including the above-mentioned evaporator, which can detect the water level stably and accurately and improve safety.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 , which is a schematic structural diagram of a specific embodiment of the evaporator provided by the present invention.

The evaporator provided by the specific embodiment of the present invention includes a metal shell 1, a probe 2 and a controller. The metal shell 1 is used to hold water and is a container for converting water into steam. The probe 2 is arranged on the metal shell 1. and electrically connected to the controller, the metal shell 2 is also connected to the circuit, and the contact position between the probe 2 and the metal shell 2 needs to be insulated. The probe 2 is set on the top of the metal shell 1 with a gap between the bottom of the metal shell 1, and the controller can output a high-frequency voltage to the probe 2, so that the probe 2 and the water surface in the metal shell 1 form a capacitance , the controller is able to detect the state change of the capacitor.

The water turns into steam in the metal shell 1, and the position of the water surface changes in real time. Since the high-frequency voltage is output to the probe 2 and there is a gap between the probe 2 and the bottom of the metal shell 1, when the water level drops, the probe 2 When it is separated from the water surface but close to the water surface, a capacitance effect will occur. The probe 2 forms a capacitance with the water surface, and high-frequency current can pass through. When the water level changes, the capacitance state will change synchronously. At the same time, the state change of the capacitance is detected by the controller. Realize the detection of water level. Even if there is an oxide layer or scale on the surface of the probe 2, or distilled water is used, it will not affect the formation of capacitance, ensuring that the water level detection function will not be invalidated by water quality, and can detect the water level stably and accurately, improving safety.

Specifically, the controller may be a micro control unit 3, and the micro control unit 3 is provided with a power supply for outputting high-frequency voltage. Meanwhile, the micro control unit 3 is provided with an output interface 31 for outputting high-frequency voltage and a detection interface 32 for detecting the state change of the capacitance. To realize the synchronization of output and detection, other types of controllers can also be used, or a power supply can be set separately, all of which are within the protection scope of the present invention.

In order to ensure stable operation, preferably, the voltage value of the high-frequency voltage is less than or equal to 5V, the frequency value of the high-frequency voltage is greater than 10KHz, and the output voltage of the power supply is less than 24V, and various parameters can be adjusted according to the situation.

In the evaporator provided in the specific embodiment of the present invention, the metal shell 1 can be a stainless steel shell, and of course, shells made of other materials can also be used.

In the evaporators provided in the above specific embodiments, a temperature detector that is communicatively connected to the controller can also be provided in the metal casing 1 . By monitoring the temperature in real time, the controller controls the operation of each component in the evaporator to realize intelligent control.

In addition to the above-mentioned evaporator, a specific embodiment of the present invention also provides a steam ironing device including the above-mentioned evaporator. For the structure of other parts of the steam ironing device, please refer to the prior art, which will not be repeated here.

Specifically, the aforementioned steam ironing equipment may be a steam iron, or may be equipment such as a garment steamer.

The steam ironing equipment and the evaporator thereof provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (8)

1. An evaporator of steam ironing equipment, comprising a metal casing (1) for holding water, a probe (2) arranged in the metal casing (1) and used for detecting water level and an electrical connection The controller of the probe (2) is characterized in that, the probe (2) is arranged on the top of the metal shell (1) and there is a gap between the bottom of the metal shell (1), so The controller can output a high-frequency voltage to the probe (2), so that the probe (2) forms a capacitance with the water surface in the metal shell (1), and the controller can detect the capacitance state change; the metal casing (1) is also provided with a temperature detector communicatively connected to the controller. 2. The evaporator according to claim 1, characterized in that the controller is specifically a micro-control unit (3), and the micro-control unit (3) is provided with a power supply for outputting the high-frequency voltage. 3. The evaporator according to claim 2, characterized in that, the micro-control unit (3) is provided with an output interface (31) for outputting the high-frequency voltage and for detecting the state change of the capacitance detection interface (32). 4. The evaporator according to claim 3, wherein the voltage value of the high-frequency voltage is less than or equal to 5V, and the frequency value of the high-frequency voltage is greater than 10KHz. 5. The evaporator according to claim 4, wherein the output voltage of the power supply is less than 24V. 6. The evaporator according to claim 1, characterized in that, the metal shell (1) is specifically a stainless steel shell. 7. A steam ironing device, comprising a casing and an evaporator disposed in the casing, wherein the evaporator is specifically the evaporator according to any one of claims 1 to 6. 8. The steam ironing device according to claim 7, characterized in that, the steam ironing device is specifically a steam iron.