CN214193861U - Clothes nursing machine - Google Patents

Abstract

The utility model provides a clothes nursing machine. The utility model discloses a clothing nursing machine detects the water level of boiler through installation thermistor device in the boiler. Specifically, a power panel is arranged to supply power to the thermistor device, and a current detection chip is arranged to detect the current of the thermistor device. And acquiring the current resistance of the thermistor device by the processor according to the current of the thermistor device detected by the current detection chip and the voltage supplied by the power panel. When the current resistance of the thermistor device is greater than the resistance threshold value, the temperature of the thermistor device is higher due to the fact that the thermistor device is exposed to air in the boiler at the moment, namely the water in the boiler is lower than a preset water level, and the processor controls the water supply mechanism to be started to supply water to the boiler. Because the utility model discloses clothing nursing machine utilizes the characteristic that thermistor device's resistance temperature coefficient is big, and the incrustation scale does not have the influence to it, and does not have relative motion's part, detects reliable and stable.

Description

Clothes nursing machine

Technical Field

The utility model relates to a clothing nursing technical field especially relates to a clothing nursing machine.

Background

With the improvement of living standards, the requirements of people on clothes treatment are continuously improved, and the clothes treatment by a washing machine, an iron and the like can not meet the requirements of people. A laundry care machine for caring laundry with steam has been produced. The laundry care machine generally includes a care box and a steam generator, wherein steam generated by the steam generator is introduced into the care box to care the laundry in the care box. Among them, the steam generator generally includes a boiler and a heater that heats water in the boiler to generate steam. A water level detection sensor is usually disposed in the boiler to detect the height of the water level, and then determine whether to supply water into the boiler.

A floating ball type liquid level meter is generally adopted in a boiler of the existing clothes nursing machine and comprises a floating ball and a sliding rod, and the floating ball is sleeved on the sliding rod. When the water level in the boiler changes, the floating ball moves up and down along the sliding rod along with the water level. The magnet of the floating ball generates magnetic attraction to the reed switch in the slide bar, and the position change of the liquid level is converted into an electric signal.

However, because the floater and the slide bar are immersed in the water in the boiler, the boiler heats the water to generate water vapor, scale cannot be generated, the scale deposits on the inner hole of the floater and the surface of the slide bar, so that the friction between the floater and the slide bar is increased, the sliding of the floater is blocked, even the blocking condition occurs, the water level detection is inaccurate or even fails, and the clothes care machine cannot work normally.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clothes nursing machine to solve current floater formula level gauge and lead to the inaccurate technical problem who loses efficacy even of water level detection because of depositing the incrustation scale.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a clothes nursing machine, it includes: the boiler comprises a thermistor device, a boiler, a water supply mechanism and a control circuit board; one end of the thermistor device is fixed on the boiler in an insulating way, and the other end of the thermistor device extends into the boiler; the water supply mechanism is communicated with the boiler; a power panel, a current detection chip and a processor are integrated on the control circuit board, the power panel and the current detection chip are respectively electrically connected with the thermistor device, the power panel is used for supplying power to the thermistor device, and the current detection chip is used for detecting the current of the thermistor device; the processor is respectively electrically connected with the current detection chip and the water supply mechanism, and the processor is configured to obtain the current resistance value of the thermistor device according to the received current of the thermistor device and control the water supply mechanism to supply water to the boiler when the current resistance value of the thermistor device is greater than a resistance threshold value.

Compared with the prior art, the utility model provides a clothing care implement has following advantage:

the utility model provides a clothes nursing machine detects the water level of boiler through installation thermistor device in the boiler. Specifically, a power panel is arranged to supply power to the thermistor device, and a current detection chip is arranged to detect the current of the thermistor device. And acquiring the current resistance of the thermistor device by the processor according to the current of the thermistor device detected by the current detection chip and the voltage supplied by the power panel. When the current resistance of the thermistor device is greater than the resistance threshold value, the temperature of the thermistor device is higher due to the fact that the thermistor device is exposed to air in the boiler at the moment, namely the water in the boiler is lower than a preset water level, and the processor controls the water supply mechanism to be started to supply water to the boiler. Because the utility model discloses clothing nursing machine utilizes the characteristic that thermistor device's resistance temperature coefficient is big, and the incrustation scale does not have the influence to it, and does not have relative motion's part, detects reliable and stable.

As an improvement of the above-mentioned clothes care machine of the present invention, the thermistor device includes a housing and a thermistor element mounted in the housing, the thermistor element is electrically connected to the current detection chip and the power board respectively; the top end of the shell is fixed on the boiler in an insulating mode.

As an improvement of the above-mentioned clothes care machine of the present invention, the housing and the thermistor element are provided with an insulating filling body therebetween.

As an improvement of the clothes nursing machine of the utility model, the detachable shell is fixed on the boiler.

As an improvement of the above-mentioned clothes care machine of the present invention, the top end of the boiler is provided with the mounting port, the housing with the mounting port threaded connection.

As an improvement of the above-mentioned clothes care machine of the present invention, the top end of the housing extends outward to form a limit ring the housing with during the threaded connection of the mounting opening, the limit ring with the end face butt of the mounting opening.

As an improvement of the clothes nursing machine of the utility model, a flow stabilizing plate is arranged in the boiler, and a water through hole is arranged on the flow stabilizing plate; the lateral wall of the boiler is provided with a water inlet which is used for being communicated with the water supply mechanism, and the water inlet is positioned at the lower side of the flow stabilizing plate.

As an improvement of the laundry care machine of the present invention, the flow stabilizing plate includes a middle plate, and a first inclined plate and a second inclined plate respectively disposed at two sides of the middle plate, and the first inclined plate and the second inclined plate are both located above the middle plate; the first inclined plate is opposite to the water inlet, and the second inclined plate is provided with the water passing hole.

As an improvement of the above-mentioned clothes care machine of the present invention, the flow stabilizing plate is welded to the inner side wall of the boiler.

As an improvement of the clothes care machine of the present invention, the water supply mechanism includes a water supply pipe, a water supply pump and a clean water tank, wherein a water inlet end of the water supply pump is communicated with the clean water tank, and a water outlet end of the water supply pump is communicated with the boiler through the water supply pipe; the processor is electrically connected with the water supply pump, and the processor can control the working state of the water supply pump according to the current resistance of the thermistor device.

As an improvement of the clothes care machine of the present invention, the clothes care machine further comprises an electric heating tube, the electric heating tube is disposed in the boiler or outside the boiler, and the electric heating tube is used for heating water in the boiler to generate steam; the processor is also electrically connected with the electric heating tube, and the processor is further configured to control heating of the electric heating tube when a current resistance value of the thermistor device is less than or equal to the resistance threshold.

As an improvement of the laundry care machine of the present invention, the laundry care machine further comprises a casing and an inner container located in the casing, the inner container and the bottom of the casing form an installation space, and the boiler, the control circuit board and the water supply mechanism are installed in the installation space; the boiler is provided with a steam outlet, and a steam pipeline is arranged between the steam outlet and the inner container.

As an improvement of the clothes care machine of the present invention, the clothes care machine further comprises a waste water discharge mechanism installed in the installation space, wherein the waste water discharge mechanism comprises a waste water pipe, a waste water pump and a waste water tank; one end of the waste water pipe is communicated with the waste water tank of the inner container, the other end of the waste water pipe is communicated with the water inlet end of the waste water pump, and the water outlet end of the waste water pump is communicated with the waste water tank.

In addition to the technical problems, technical features constituting technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical problems that the laundry care machine provided by the present invention can solve, other technical features included in the technical solutions and the advantages brought by the technical features will be further described in detail in the following detailed description.

Drawings

In order to illustrate more clearly the embodiments of the invention or the technical solutions in the prior art, the drawings which are needed in the description of the embodiments of the invention or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the invention, and the drawings and the description are not intended to limit the scope of the disclosed concept in any way, but to illustrate the disclosed concept for a person skilled in the art by referring to a specific embodiment, and for a person skilled in the art, other drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a side view of a clothes care machine according to an embodiment of the present invention;

fig. 2 is a front view of a clothes care machine provided by an embodiment of the present invention;

FIG. 3 is an enlarged view of P in FIG. 2;

FIG. 4 is a schematic structural diagram of a boiler of a clothes care machine according to an embodiment of the present invention;

fig. 5 is an electrical connection schematic diagram of a clothes care machine provided by an embodiment of the present invention.

Description of reference numerals:

11: a housing; 12: an inner container; 121: a clothes rail; 122: clothing; 13: a door body; 14: an installation space;

2: a boiler; 21: an installation port; 22: a water inlet; 23: a steam outlet; 24: a flow stabilizer; 240: water passing holes; 241: a middle plate; 242: a first sloping plate; 243: a second swash plate; 26: an electric heating tube;

3: a thermistor device; 31: a housing; 311: a limiting ring; 32: a thermistor element; 33: an insulating filler;

4: a water supply mechanism; 41: a water purifying tank; 42: a water supply pump; 43: a water supply pipe;

5: a control circuit board; 51: a current detection chip; 52: a processor; 53: a power panel; 54: a cable;

6: a wastewater discharge mechanism; 61: a waste pipe; 62: a waste water pump; 63: a waste water tank.

Detailed Description

Generally adopt floater formula level gauge in the boiler of current clothing nursing machine, but because the equal submergence of floater and slide bar is in the aquatic of boiler, after the boiler adds hot water, the unavoidable production incrustation scale, the incrustation scale deposits on floater hole and slide bar surface, lead to the frictional force increase between floater and the slide bar, make the floater slide obstructed, the dead condition of card appears even, lead to the water level to detect inaccurate or even inefficacy, make the water in the boiler insufficient and appear dry combustion method, perhaps, water in the boiler is too much and spill over, and then lead to clothing nursing machine can not normally work.

In view of the above, the present invention provides a clothes care machine, which utilizes the characteristic of thermistor having a relatively large resistance temperature coefficient to install a thermistor device in a boiler, and sets a power panel to supply power to the thermistor device; the thermistor device is electrified to generate current and heat; when the thermistor device is immersed in water, the thermistor device has a lower temperature and a lower resistance, and when the water level in the boiler is lower and the thermistor device is exposed to air, the thermistor device has a higher temperature and a higher resistance. The processor receives the current of the thermistor device detected by the current detection chip and acquires the current resistance value of the thermistor device. When the current resistance value of the thermistor device is greater than the resistance threshold value, the thermistor device is exposed in the air, and the water level in the boiler is low; the processor controls the water supply mechanism to supply water into the boiler. Because the characteristic that the resistance temperature coefficient of the thermistor is large is utilized, the scale has no influence on the thermistor, and no relative motion part exists, so that the detection is stable and reliable; the utility model discloses a clothing nursing machine simple structure, processing is convenient, and is with low costs.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 to 5, an embodiment of the present invention provides a clothes care machine, which includes: the boiler comprises a thermistor device 3, a boiler 2, a water supply mechanism 4 and a control circuit board 5; one end of the thermistor device 3 is fixed on the boiler 2 in an insulating way, and the other end of the thermistor device 3 extends into the boiler 2; the water supply mechanism 4 is communicated with the boiler 2; the control circuit board 5 is integrated with a power board 52, a current detection chip 51 and a processor 52, the power board 53 and the current detection chip 51 are respectively electrically connected with the thermistor device 3, the power board 53 is used for supplying power to the thermistor device 3, and the current detection chip 51 is used for detecting the current of the thermistor device 3. The processor 52 is electrically connected to the current detecting chip 51 and the water supply mechanism 4, respectively, and the processor 52 is configured to obtain the current resistance value of the thermistor device 3 according to the received current of the thermistor device 3, and control the water supply mechanism 4 to supply water to the boiler 2 when the current resistance value of the thermistor device 3 is greater than the resistance threshold value.

The thermistor device 3 may be a Positive Temperature Coefficient thermistor (PTC), and the thermistor device 3 may also be a Negative Temperature Coefficient thermistor (NTC). The positive temperature coefficient thermistor (PTC) has a larger resistance value at higher temperatures, and the negative temperature coefficient thermistor (NTC) has a lower resistance value at higher temperatures. Those skilled in the art will set the resistance threshold based on the type of PTC and NTC selected and the particular heat sensitive material, etc. The present invention is described by taking the example that the thermistor device 3 adopts the PTC.

One end of the thermistor device 3 is fixed on the boiler 2 in an insulating way, namely, the thermistor device 3 is fixedly connected with the boiler 2, and the thermistor device 3 is not electrically insulated from the boiler 2; and, the other end of the thermistor device 3 is located inside the boiler 2 to judge the water level inside the boiler 2.

The boiler 2 serves as a container for generating steam, and its interior is used for containing purified water. The boiler 2 may be a cylindrical container, or the boiler may be a rectangular container, and the specific shape of the boiler 2 is not limited herein, and those skilled in the art may set the boiler according to the actual installation space. The boiler 2 may be electrically conductive, for example, the boiler 2 may be made of metal; for another example, the boiler 2 may also be made of semiconductor, and in the embodiment of the present invention, the boiler 2 is a metal furnace body.

The boiler 2 is provided with a water inlet 22, the water supply mechanism 4 is communicated with the water inlet 22, and the water supply mechanism 4 injects purified water into the boiler 2 through the water inlet 22 so as to enable the boiler 2 to generate water vapor.

Referring to fig. 5, a current detection chip 51, a power supply board 53 and a processor 52 are integrated on the control circuit board 5, and the power supply board 53 and the current detection chip 51 are electrically connected to the thermistor devices 3, respectively. In this manner, the power supply board 53 can supply power to the thermistor device 3. Optionally, the power board 53 is electrically connected to the thermistor device 3 through a cable 54, so that the control circuit board 5 can be installed at a position far away from the boiler 2, the control circuit board 5 is prevented from being affected by the high temperature of the boiler 2, and the flexibility of the installation position of the control circuit board 5 can be improved. The current detection chip 51 may also be electrically connected to the thermistor device 3 through a cable 54, so that the current detection chip 51 can detect the current of the thermistor device 3.

In addition, the current detection chip 51, the power panel 53 and the processor 52 are all integrated on the control circuit board 5, so that the integration level of control components of the clothes care machine is improved, the modular processing of the control circuit board 5 is facilitated, and the batch processing of the clothes care machine is facilitated.

With continued reference to fig. 5, the processor 52 is electrically connected to the power board 53, and the processor 52 is used to control whether the power board 53 supplies power to the thermistor device 3. The power supply board 53 may be provided with a conversion circuit that converts the electricity used by the residents in the room into a voltage for use by the thermistor device 3.

The processor 52 is also electrically connected to the current detecting chip 51, the processor 52 receives the current of the thermistor device 3 detected by the current detecting chip 51, and the processor 52 determines the current resistance value of the thermistor device 3 according to the voltage and current supplied to the thermistor device 3 by the power supply board 53. Also, the processor 52 can compare the current resistance value of the thermistor device 3 with a preset resistance threshold value.

When the current resistance value of the thermistor device 3 is greater than the resistance threshold value, it indicates that the current temperature of the thermistor device 3 is higher, and further indicates that the thermistor device 3 is exposed to the air in the boiler 2, that is, it indicates that the water level in the boiler 2 is lower than the preset water level. At this time, the processor 52 controls the water supply mechanism 4 to be turned on to supply water into the boiler 2.

As the water in the boiler 2 is continuously increased, the thermistor device 3 is gradually immersed in the water. When the current resistance value of the thermistor device 3 is less than or equal to the resistance threshold value, it indicates that the current temperature of the thermistor device 3 is low, and further indicates that the thermistor device 3 is immersed in the water in the boiler 2, that is, it indicates that the water level in the boiler 2 is higher than or equal to the preset water level. At this time, the processor 52 controls the water supply mechanism 4 to be turned off.

Through the above description, the embodiment of the present invention provides a clothes care machine, which detects the water level of the boiler 2 by installing the thermistor device 3 in the boiler 2. Specifically, the thermistor device 3 is supplied with power by providing the power supply board 53, and the current detecting chip 51 is provided to detect the current of the thermistor device 3. The current resistance of the thermistor device 3 is acquired by the processor 52 based on the current of the thermistor device 3 detected by the current detecting chip 51 and the voltage supplied from the power supply board 53. When the current resistance of the thermistor device 3 is greater than the resistance threshold, indicating that the thermistor device 3 is at a higher temperature due to exposure to air in the boiler 2, i.e., indicating that the water in the boiler 2 is below the preset water level, the processor 52 controls the water supply mechanism 4 to be turned on to supply water to the boiler 2. Because the utility model discloses clothing nursing machine utilizes the characteristic that thermistor device 3's resistance temperature coefficient is big, and the incrustation scale does not have the influence to it, and does not have relative motion's part, detects reliable and stable.

In a specific implementation, the thermistor device 3 includes a case 31 and a thermistor element 32 mounted in the case 31, the thermistor element 32 being electrically connected to the current detection chip 51 and the power supply board 53, respectively; the top end of the casing 31 is fixed to the boiler 2 in an insulated manner.

Wherein the case 31 has an accommodation space for accommodating the thermistor element 32 to protect the thermistor element 32. The housing 31 may be of any shape, for example, the housing 31 may be a long cylinder, which is easy to install and may extend into the boiler 2. The top end of the casing 31 is fixed on the boiler 2 in an insulated manner, for example, the top end of the casing 31 is fixed on the boiler 2 in an insulated manner through a flange; for another example, the top end of the housing 31 is fixed to the boiler 2 by a snap structure. The housing 31 may be made of an insulating material, for example, the housing 31 is made of a high temperature resistant plastic material. At this time, the top end of the housing 31 may be directly fixedly connected to the boiler 2 without additionally providing an insulating connection structure, so that it is advantageous to reduce the number of installation structures of the boiler 2. The shell 31 can also be made of metal, and in this case, the insulating connection with the boiler 2 can be realized by arranging an insulating pad and insulating glue between the shell 31 and the connection surface of the boiler 2.

The thermistor element 32 of the present embodiment is a conventional thermistor element, for example, the thermistor element 32 may be a semiconductor thermistor element, and the specific material of the thermistor element 32 is not limited in the present embodiment, and can be selected by those skilled in the art according to actual conditions. The thermistor element 32 is electrically connected to the current detection chip 51 and the power supply board 53 through cables 54, respectively.

In addition to the above embodiment, the insulating filler 33 is provided between the case 31 and the thermistor element 32. That is, the thermistor element 32 is fixed in the casing 31 by being encapsulated by the insulating filler 33 to fix and protect the thermistor element 32. The insulating filler 33 may be an insulating high-temperature-resistant material such as epoxy resin or magnesium oxide, which is not limited by the present invention.

In some implementations, the housing 31 is removably secured to the boiler 2, for example, the housing 31 is secured to the boiler 2 by screws, and for example, the housing 31 is snapped onto the boiler 2. This realization mode shell 31 detachable fixes on boiler 2, makes things convenient for the dismantlement of thermistor device 3 to change.

Referring to fig. 4, in a specific fixing mode of the casing 31, the top end of the boiler 2 is provided with the mounting port 21, the casing 31 is in threaded connection with the mounting port 21, that is, an internal thread is arranged on the mounting port 21, an external thread is arranged on the top end of the casing 31, and the thermistor device 3 is fixed on the top end of the boiler 2 through the threaded connection of the casing 31 and the mounting port 21.

In order to improve the length of the internal thread of the mounting port 21, the stability of connecting the connecting seat 32 with the mounting port 21 is improved, an opening is arranged on the top wall of the boiler 2, a boss is arranged on the outer side of the opening, a through hole coaxial with the opening is arranged on the boss, at the moment, the mounting port 21 is formed by the through hole and the opening, namely, the boss is arranged on the part of the top wall of the boiler 2, the mounting port 21 is arranged at the boss, the length of the mounting port 21 is favorably improved, the length of the threaded connection between the shell 31 and the mounting port 21 can be improved, and the reliability and the stability of the connection between the shell 31 and the mounting port 21 are improved.

As shown in fig. 4, the boiler 2 is a rectangular water storage container, and the top end of the boiler 2 is provided with an installation opening 21, so that on one hand, the top end of the boiler 2 is a horizontal plane, and the installation is convenient; on the other hand, in order to prevent the water in the boiler 2 from boiling and overflowing, the water in the boiler 2 has a certain interval from the top surface, and the installation opening 21 is arranged on the top surface, so that the sealing performance can be reduced, and the structure is simplified.

With continued reference to fig. 4, the top end of the housing 31 extends outward to form a stopper ring 311, and when the housing 31 is screwed into the mounting opening 21, the stopper ring 311 abuts against the end surface of the mounting opening 21. Set up a spacing ring 311 at the top of shell 31, the external diameter of spacing ring 311 is greater than the external diameter of shell 31, so make when shell 31 and installing port 21 threaded connection, spacing ring 311 and installing port 21's top end face butt carry on spacingly to shell 31 and installing port 21's threaded connection, avoid shell 31 to screw in the length overlength of installing port 21.

In one possible implementation, a flow stabilizer 24 is disposed in the boiler 2 above the water inlet 22, and water through holes 240 are disposed on the flow stabilizer 24. The flow stabilizer 24 divides the space in the boiler 2 into an upper part and a lower part, and the water inlet 22 is located on the side wall of the bottom space. And, water in the bottom space can enter the upper space through the water passing holes 240. The water through hole 240 may be any shape, such as a circular hole, a square hole, or the like. The embodiment of the present invention does not limit the size, shape and number of the water through holes 240.

This implementation stabilizes the rivers in the boiler 2 through setting up the stabilizer 24, improves the degree of accuracy that detects, avoids water inlet 22 to intake, rivers fluctuation or splash water that water boiling etc. arouse to the thermistor device 3 on, lead to the misjudgement.

Optionally, the flow stabilizing plate 24 includes a middle plate 241, and a first inclined plate 242 and a second inclined plate 243 respectively disposed at two sides of the middle plate 241, and both the first inclined plate 242 and the second inclined plate 243 are located above the middle plate 241; the first inclined plate 242 is opposite to the water inlet 22, and the second inclined plate 243 is provided with a water passing hole 240. Wherein the middle plate 241 may be a flat plate parallel to the bottom wall of the boiler 2, which may avoid water flow fluctuation or splash and the like from directly splashing on the thermistor device 3. The first sloping plate 242 and the second sloping plate 243 are inclined obliquely upward, and thus the first sloping plate 242, the intermediate plate 241, and the second sloping plate 243 form an inverted trapezoidal structure, providing an installation space for the thermistor device 3. The utility model discloses do not restrict the inclination of first swash plate 242 and second swash plate 243, technical personnel in the field can set up according to actual conditions. The first inclined plate 242 is opposite to the water inlet 22, so as to stabilize the water flow entering from the water inlet 22 and avoid the water flow from splashing on the thermistor device 3 to cause misjudgment. The second inclined plate 243 is provided with water holes 240 so that water of the bottom space can enter the upper space, and so that the thermistor devices 3 can be submerged by the water.

In an alternative implementation, the flow stabilizer 24 is welded to the inner side wall of the boiler 2, and the connection mode is stable and reliable.

With continued reference to fig. 2 and 3, in some embodiments, the water supply means 4 includes a water supply pipe 43, a water supply pump 42, and a clean water tank 41, a water inlet end of the water supply pump 42 is communicated with the clean water tank 41, and a water outlet end of the water supply pump 42 is communicated with the boiler 2 through the water supply pipe 43; the processor 52 is electrically connected to the water supply pump 42, and the processor 52 can control the operation state of the water supply pump 42 according to the current resistance of the thermistor device 3.

The clean water tank 41 is used for storing clean water, and may be a water storage container having any shape, such as a cylinder, a rectangle, etc., and those skilled in the art can set the shape of the clean water tank 41 according to the actual installation space.

The water supply pump 42 may be an existing water pump for pumping the water in the clean water tank 41 into the boiler 2. The water supply pipe 43 may be an existing metal pipe, plastic pipe, or the like.

The water inlet end of the water supply pump 42 communicates with the fresh water tank 41, for example, the fresh water tank 41 is provided with an outlet, and the water inlet end of the water supply pump 42 communicates with the outlet on the fresh water tank 41 through a pipe. The water outlet end of the water supply pump 42 is communicated with the boiler 2, the side wall of the boiler 2 is provided with the water inlet 22, and the two ends of the water supply pipe 43 are respectively communicated with the water inlet 22 and the water outlet end of the water supply pump 42.

In the present embodiment, the processor 52 is electrically connected to the water supply pump 42, and the processor 52 determines the present resistance of the thermistor device 3 based on the current of the thermistor device 3 detected by the current detecting chip 51, and controls the operating state of the water supply pump 42 based on the present resistance.

Specifically, when no water exists in the boiler 2 or the water level is reduced, air exists between the boiler 2 and the thermistor device 3, the processor 52 determines that the capacitance of the thermistor device 3 and the capacitance pole piece 25 is higher than the capacitance threshold value, the processor 52 controls the water supply pump 42 to be started, the water supply pump 42 discharges the water in the water purifying tank 41 into the boiler 2 through the water supply pipe 43, the water in the boiler 2 is ensured to be at the preset water level, and the stability of the working state of the clothes care machine is improved.

As the water in the boiler 2 is continuously increased, the thermistor device 3 is gradually immersed in the water. When the current resistance value of the thermistor device 3 is less than or equal to the resistance threshold value, it indicates that the current temperature of the thermistor device 3 is low, and further indicates that the thermistor device 3 is immersed in the water in the boiler 2, that is, it indicates that the water level in the boiler 2 is higher than or equal to the preset water level. At this time, the processor 52 controls the water supply pump 42 to be turned off.

The utility model discloses clothing nursing machine still includes electric heating pipe 26, and electric heating pipe 26 sets up in boiler 2 or electric heating pipe 26 sets up in the boiler 2 outside, and electric heating pipe 26 is used for heating the water production steam in the boiler 2.

Wherein, the electric heating pipe 26 can be an existing tubular electric heating element, and can be installed outside the bottom end of the boiler 2, at this time, the boiler 2 is a metal furnace body, and the electric heating pipe 26 transfers heat through the boiler 2 to further heat the water in the boiler 2, so as to generate water vapor. Alternatively, the electric heating pipe 26 is installed in the boiler 2, for example, the electric heating pipe 26 is hermetically installed in the boiler 2 through a mounting flange, a mounting seat, and the like, and at this time, the shop heat collecting pipe 26 directly heats water in the boiler 2 to generate steam.

The electric heating tube 26 of the present embodiment is electrically connected to the processor 52, and the processor 52 is further configured to control heating of the electric heating tube 26 when the current resistance value of the thermistor device 3 is less than or equal to the resistance threshold value. That is, when the water in the boiler 2 is above the preset water level, the processor 52 controls the electric heating tube 26 to be turned on to heat the water in the boiler 2 to generate water vapor for steam-treating the laundry.

The working process of the thermistor device 3 of the laundry care machine of the present invention will be described in detail with reference to fig. 4.

And (4) turning on the clothes physical machine to supply power to all electronic devices in the clothes nursing machine. The processor 52 controls the power board 53 to supply power to the thermistor element 32 for a preset time, which is greater than or equal to 3s, so that the current of the thermistor element 32 is stable.

The current detecting chip 51 detects the current of the thermistor element 32 and sends it to the processor 52, so that the processor 52 can obtain the current resistance of the thermistor element 32 according to the current and the power supply voltage of the power supply board 53.

Processor 52 compares the current resistance to the magnitude of the resistance threshold. When the current resistance value of the thermistor element 32 is greater than the resistance threshold value, it indicates that the current temperature of the thermistor element 32 is high, and thus that the thermistor element 32 is exposed to the air in the boiler 2, i.e., that the water level in the boiler 2 is lower than the preset water level. At this time, the processor 52 controls the water supply pump 42 to be turned on to supply water into the boiler 2.

As the water in the boiler 2 is continuously increased, the thermistor element 32 is gradually immersed in the water. When the current resistance value of the thermistor element 32 is less than or equal to the resistance threshold value, it indicates that the current temperature of the thermistor element 32 is low, and thus indicates that the thermistor element 32 is immersed in the water in the boiler 2, i.e., indicates that the water level in the boiler 2 is higher than or equal to the preset water level. At this time, the processor 52 controls the water supply pump 42 to be turned off. Then, the processor 52 controls the electric heating pipe 26 to be turned on to heat the water in the boiler 2 to generate the water vapor, so as to steam-care the laundry.

It should be noted that, a person skilled in the art may set the magnitude of the resistance threshold according to actual situations. The thermistor element 32 of the present embodiment is made of a semiconductor material, and defines a resistance range at a high temperature and a resistance range at a low temperature, where "low temperature" means 100 ℃ or lower, and "high temperature" means more than 100 ℃. That is, the resistance of the thermistor element 32 at 100 ℃ is the resistance threshold.

With continuing reference to fig. 1 and 2, the clothes care machine of the present invention further includes a casing 11 and an inner container 12 located in the casing 11, the inner container 12 and the bottom of the casing 11 form an installation space 14, and a boiler 2, a control circuit board 5 and a water supply mechanism 4 are installed in the installation space 14; the boiler 2 is provided with a steam outlet 23, and a steam pipeline is arranged between the steam outlet 23 and the inner container 12.

Wherein, casing 11 and inner bag 12 are front side open-ended shell structure, and casing 11 is located the outside of inner bag 12 for protect inner bag 12, have the space that holds the clothing in the inner bag 12, and inner bag 12 is inboard waterproof. A door body 13 is arranged on the outer sides of the inner container 12 and the machine shell 11, the door body 13 can be opened or closed, and the door body 13 and the inner container 12 form a nursing space. A clothes hanging rod 121 is arranged on the top of the inner container 12 for hanging clothes 122. The top wall of the boiler 2 is provided with a steam outlet 23, and a steam pipeline is arranged between the steam outlet 23 and the inner container 12 so as to introduce the steam generated by the boiler 2 into the inner container 12 for nursing the clothes 122.

An installation space 14 is formed at the bottom of the cabinet 11 and the inner container 12 to provide installation positions for the boiler 2, the control circuit board 5 and the water supply mechanism 4, so that the structures can be protected on one hand, and the structures can be prevented from being exposed to influence the aesthetic property of the clothes care machine on the other hand.

In a possible embodiment, the laundry care machine further includes a waste water discharge mechanism 6 installed in the installation space 14 to discharge waste water in the inner tub 12 to the outside of the outer tub 12. Wherein, the waste water discharge mechanism 6 comprises a waste water pipe 61, a waste water pump 62 and a waste water tank 63; one end of the waste water pipe 61 is communicated with the waste water tank of the inner container 12, the other end of the waste water pipe 61 is communicated with the water inlet end of the waste water pump 62, and the water outlet end of the waste water pump 62 is communicated with the waste water tank 63.

Wherein, a waste water tank is arranged in the inner container 12 to lead the waste water to be gathered. One end and the wastewater disposal basin intercommunication of waste pipe 61, the other end of waste pipe 61 and the end intercommunication of intaking of waste water pump 62 to, the play water end and the wastewater tank 63 intercommunication of wastewater pump 62, so, waste water pump 62 pumps the waste water in the inner bag 12 and saves in the wastewater tank 63, avoids the excessive user experience degree that influences of waste water.

To sum up, the embodiment of the utility model provides a clothing nursing machine has following advantage at least:

1. the utility model discloses water level in the clothing nursing machine adopted thermistor device 3 monitoring boiler 2, no moving part, avoids leading to the condition that the water level detection became invalid because of the incrustation scale is produced to the motion fitting surface, improves the degree of accuracy that detects, is favorable to improving product life.

2. The utility model discloses clothing nursing machine adopts thermistor device 3 monitoring boiler 2 interior water level, does not receive the water scale influence, can adopt the running water and need not the restriction and use the pure water, is favorable to reducing user use cost, extends clothing nursing machine's suitability.

3. The thermistor device 3 of the utility model has simple structure, convenient disassembly and replacement and convenient maintenance; the device is few, and the manufacturing difficulty is low, and is with low costs.

4. The utility model discloses a current detection chip 51, power strip 53 and treater 52 are integrated on control circuit board 5, and control circuit board 5 installs in the boiler 2 outside, and boiler 2 is kept away from to control circuit board 5, avoids boiler 2's high temperature to influence control circuit board 5 and integrated electron device on it.

5. The embodiment of the utility model provides a be provided with the current stabilizing plate 24 in the boiler 2 of clothing nursing machine, can reduce the undulant detection unstable situation that causes of liquid level in the boiler 2, improve the degree of accuracy and the reliability that the water level detected.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (13)

1. A laundry care machine, comprising: the boiler comprises a thermistor device, a boiler, a water supply mechanism and a control circuit board;

one end of the thermistor device is fixed on the boiler in an insulating way, and the other end of the thermistor device extends into the boiler; the water supply mechanism is communicated with the boiler;

a power panel, a current detection chip and a processor are integrated on the control circuit board, the power panel and the current detection chip are respectively electrically connected with the thermistor device, the power panel is used for supplying power to the thermistor device, and the current detection chip is used for detecting the current of the thermistor device;

the processor is respectively electrically connected with the current detection chip and the water supply mechanism, and the processor is configured to obtain the current resistance value of the thermistor device according to the received current of the thermistor device and control the water supply mechanism to supply water to the boiler when the current resistance value of the thermistor device is greater than a resistance threshold value.

2. A laundry care machine according to claim 1, wherein the thermistor device includes a housing and a thermistor element mounted in the housing, the thermistor element being electrically connected to the current detecting chip and the power supply board, respectively; the top end of the shell is fixed on the boiler in an insulating mode.

3. A laundry care machine as claimed in claim 2, characterized in that an insulating filler is provided between the casing and the thermistor element.

4. A laundry care machine as claimed in claim 2, wherein the housing is removably secured to the boiler.

5. A laundry care machine as claimed in claim 4, characterized in that the top end of the boiler is provided with a mounting opening, the housing being screwed to the mounting opening.

6. A laundry care machine as claimed in claim 5, wherein the top end of the housing extends outwardly to form a stop collar which abuts an end face of the mounting opening when the housing is threadedly connected to the mounting opening.

7. A machine as claimed in any one of claims 1 to 6, characterized in that a flow stabilizer is arranged in the boiler, and water through holes are arranged on the flow stabilizer; the lateral wall of the boiler is provided with a water inlet which is used for being communicated with the water supply mechanism, and the water inlet is positioned at the lower side of the flow stabilizing plate.

8. A laundry care machine as claimed in claim 7, wherein the flow stabilizer comprises a middle plate and first and second inclined plates disposed on either side of the middle plate, respectively, both the first and second inclined plates being located above the middle plate; the first inclined plate is opposite to the water inlet, and the second inclined plate is provided with the water passing hole.

9. A laundry care machine as claimed in claim 7, wherein the flow stabilizer is welded to an inner side wall of the boiler.

10. A laundry care machine according to any of claims 1-6, characterized in that said water supply means comprises a water supply pipe, a water supply pump and a clean water tank, the water inlet end of said water supply pump being in communication with said clean water tank, the water outlet end of said water supply pump being in communication with said boiler via said water supply pipe;

the processor is electrically connected with the water supply pump, and the processor can control the working state of the water supply pump according to the current resistance of the thermistor device.

11. A garment care machine as claimed in any one of claims 1 to 6, further comprising an electrically heated tube disposed within or outside the boiler for heating water within the boiler to generate steam;

the processor is also electrically connected with the electric heating tube, and the processor is further configured to control heating of the electric heating tube when a current resistance value of the thermistor device is less than or equal to the resistance threshold.

12. A laundry care machine according to any one of claims 1-6, further comprising a cabinet and a liner located within the cabinet, the liner and a bottom of the cabinet forming an installation space, the boiler, the control circuit board and the water supply mechanism being installed within the installation space;

the boiler is provided with a steam outlet, and a steam pipeline is arranged between the steam outlet and the inner container.

13. A laundry care machine according to claim 12, further comprising a waste water drain mechanism mounted within the mounting space, the waste water drain mechanism including a waste pipe, a waste water pump, and a waste water tank;

one end of the waste water pipe is communicated with the waste water tank of the inner container, the other end of the waste water pipe is communicated with the water inlet end of the waste water pump, and the water outlet end of the waste water pump is communicated with the waste water tank.

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