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CN217031159U - Automatic steam generator who supplies water - Google Patents

Automatic steam generator who supplies water Download PDF

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Publication number
CN217031159U
CN217031159U CN202220621750.0U CN202220621750U CN217031159U CN 217031159 U CN217031159 U CN 217031159U CN 202220621750 U CN202220621750 U CN 202220621750U CN 217031159 U CN217031159 U CN 217031159U
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steam boiler
water
steam
water supply
control board
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CN202220621750.0U
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Chinese (zh)
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张百根
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Ningbo Rong Yida Electrical Appliance Co ltd
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Ningbo Rong Yida Electrical Appliance Co ltd
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Abstract

The utility model relates to a steam generating device capable of automatically supplying water, which comprises a steam boiler and a water supply device; the water supply device and the steam boiler are electrically connected with the control panel; the steam boiler is provided with a conductance detection device, the conductance detection device is electrically connected with the control board, and when the water level is not lower than the conductance detection device, the control board receives a first electric signal; when the water level is lower than the conductance detection device, the control board receives a second electric signal; the control panel adjusts the water supply efficiency of the water supply device according to the received different electric signals. The utility model has the beneficial effects that: 1. the detection point is directly arranged on the steam boiler, and the control panel receives different current signals through the difference of the electrical conductivity of the steam and the liquid water, so that the problems of electric leakage or unstable connection generated in the wire connection are avoided, and the detection is more reliable; 2. the conductive contact is arranged on the steam boiler or outside the steam boiler, so that the installation environment is relatively clean, and the accuracy of detection signals is prevented from being influenced.

Description

Automatic steam generator who supplies water
Technical Field
The utility model relates to the technical field of steam generators, in particular to a steam generating device capable of automatically supplying water.
Background
In some household appliances (such as steam washers, flatirons, garment steamers, etc.), a steam boiler is needed that can generate steam to assist a person in performing housework (fabric ironing, indoor cleaning, etc.).
Such steam boilers are generally classified into 2 types, one type is relatively large in capacity, and the steam boilers are generally used after water is added to the steam boilers at one time and then the steam boilers are preheated until enough steam is in the steam boilers. When water needs to be added, the boiler is cooled to the inside without steam, the boiler opening can be safely opened to add water, and the boiler can be used after being added with water and being heated for a long time. Another type of boiler has only a capacity sufficient to store a small amount of water for generating steam at a sufficient pressure and temperature, and requires a water pump on the outside of the boiler to supply water to the boiler to ensure that there is always a sufficient amount of water in the boiler for generating steam. The water pump is required to maintain the water level of the boiler at a relatively stable level so that the boiler can maintain the steam reserve at an optimum state.
In the prior art, a detection device is usually installed on a steam boiler to detect the water level in the steam boiler. In a conventional steam boiler, a detection device is arranged inside the boiler. Adverse conditions such as water scale, impurities, oxides and the like can be formed in the boiler due to long-term use, so that the detection signal is inaccurate, and the water replenishing function of the steam boiler is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides the steam generating device capable of automatically supplying water, the steam boiler is provided with the detection point for detecting the water level, the steam boiler is not influenced by the environment, and is not easy to damage and long in service life.
A steam generating device with automatic water supply comprises a steam boiler and a water supply device which are connected by pipe fittings, wherein liquid water in the water supply device enters the steam boiler and is heated to form steam ejection; the water supply device and the steam boiler are both electrically connected with the control panel and controlled by the control panel;
the steam boiler is provided with a conductance detection device, the conductance detection device is electrically connected with the control board, and when the water level is not lower than the conductance detection device, the control board receives a first electric signal; when the water level is lower than the conductivity detection device, the control board receives a second electric signal; the control panel adjusts the water supply efficiency of the water supply device according to the received different electric signals.
The technical scheme is further set as follows: the conductance detection device is a conductive contact which is arranged on the steam boiler through an insulating piece; the conductive contacts are electrically connected to the control board.
Through adopting above-mentioned technical scheme, set up conductive contact to steam boiler on, make conductive contact direct and liquid water or steam contact, the conductivity through liquid water and steam is different, gives the different current signal of control panel transmission to judge the water level, avoided the electric leakage that easily appears in the wire connection or connect unstable phenomenon.
The technical scheme is further set as follows: the insulating part is a liquid level pipe, and two ends of the liquid level pipe are communicated into the water tank; the conductive contact is arranged on the liquid level pipe; the conductive contact is connected with the control board through a lead; when the water level in the liquid level pipe is lower than the contact, the control panel receives a first signal; when the water level in the liquid level pipe is higher than the contact, the control panel receives a second signal.
Through adopting above-mentioned technical scheme, set up the liquid level pipe, according to the isobaric principle of communicating pipe, the water level in the liquid level pipe and the water level in the steam boiler remain throughout on same horizontal plane, and the water level that detects the liquid level pipe can detect steam boiler's water level, and production and processing is simple.
The technical scheme is further set as follows: the insulating member is disposed outside the steam boiler, and both end portions are disposed up and down on the steam boiler.
The technical scheme is further set as follows: the insulating piece is arranged outside the steam boiler, and two end parts of the insulating piece are arranged on the steam boiler in a horizontal position.
The technical scheme is further set as follows: the conductive contact is disposed on the insulator and extends into the interior cavity of the insulator.
The technical scheme is further set as follows: the insulating part is a colloid hose.
The technical scheme is further set as follows: the water supply device comprises a water pump and a water tank which are connected through a pipeline, the water pump is connected between the water tank and the steam boiler, and the control panel controls the working state of the water pump.
The technical scheme is further set as follows: the steam boiler is provided with a temperature limiting device.
The technical scheme is further set as follows: the steam boiler is provided with a pressure limiting device.
By adopting the technical scheme, the temperature limiting device and the pressure limiting device are arranged, so that the temperature and the pressure of the steam boiler are ensured to be in a reasonable range, and other elements are prevented from being scalded due to overhigh temperature of the steam boiler; or the steam boiler has overlarge pressure and more accumulated water scales, which affects the working efficiency of the steam boiler.
The utility model has the beneficial effects that:
1. compared with the prior art, the detection point is directly arranged on the steam boiler, and the control panel receives different current signals through the difference of the electrical conductivity of the steam and the liquid water, so that the water level is judged, the problems of electric leakage or unstable connection generated in the connection of the lead are avoided, the detection is more reliable, and the service life can be prolonged;
2. the conductive contacts are arranged on the outer wall of the steam boiler or outside the steam boiler, so that the installation environment of the conductive contacts is relatively clean, the environments such as water scales, oxides or impurities are not easy to form, and the accuracy of detection signals is prevented from being influenced.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is an enlarged structural view of a portion a in fig. 1.
FIG. 3 is an exploded view of a steam boiler and a conductivity measuring device in example 1.
Fig. 4 is a schematic structural view of embodiment 2.
Fig. 5 is an enlarged schematic view of a portion B in fig. 4.
FIG. 6 is an exploded view of a steam boiler and a conductivity measuring device in example 2.
The attached drawings are marked with: 100. a steam boiler; 200. a water supply device; 300. a control panel; 400. a conductance detection device; 410. a conductive contact; 420. an insulating member; 210. a water pump; 220. a water tank; 500. a temperature limiting device; 600. a pressure limiting device, 101 and a detection hole; 421. and (7) mounting holes.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose of the present invention, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 to 6, the present invention discloses a steam generating device for automatically supplying water.
Example 1
Specifically, referring to fig. 1, the steam generator with automatic water supply includes a steam boiler 100 and a water supply device 200 connected by pipe members, wherein liquid water in the water supply device 200 enters the steam boiler 100 and is heated to form steam spraying; the water supply device 200 and the steam boiler 100 are electrically connected with a control plate 300 and controlled by the control plate 300;
the steam boiler 100 is provided with a conductance detection device 400, the conductance detection device 400 is electrically connected with the control board 300, and when the water level is not lower than the conductance detection device 400, the control board 300 receives a first electric signal; when the water level is lower than the conductance detecting device 400, the control board 300 receives a second electric signal; the control board 300 adjusts the water supply efficiency of the water supply device 200 according to the received different electric signals.
In actual operation, the conductance detecting device 400 detects the water level in the steam boiler 100, and when the water level is above or just above the detecting point, the control board 300 receives the first electrical signal with a large amount of water in the steam boiler 100, and controls the water supply device 200 to reduce the water supply efficiency and reduce the amount of water introduced into the steam boiler 100; when the water level in the steam boiler 100 is below the sensing point, the control panel 300 receives the second electrical signal having a small amount of water in the steam boiler 100, controls the water supply device 200 to increase the water supply efficiency, and increases the amount of water introduced into the steam boiler 100. By controlling the amount of water supplied, the water level in the steam boiler 100 is maintained in a stable state, and the efficiency of generating steam in the steam boiler 100 is maintained in a stable state.
Referring to fig. 2 and 3, in this embodiment, the conductance detecting device 400 is a conductive contact 410, and the conductive contact 410 is mounted on the steam boiler 100 through an insulating member 420; the conductive contacts 410 are electrically connected to the control board 300.
When the water level in the steam boiler 100 is above the conductive contact 410, the conductive contact 410 contacts the liquid water in the steam boiler 100, and the liquid water has a conductive function, so as to communicate with the circuit of the conductivity detector 400. When the water level in the steam boiler 100 is below the conductive contact 410, the conductive contact 410 is not in contact with the liquid water in the steam boiler 100 but in contact with the steam, and the steam contains a certain amount of liquid water and has a certain conductive function, so that the liquid level detection circuit is connected. Since the liquid water and the steam have different conductivities, the control panel 300 receives two different current signals to determine the height of the water level.
In this embodiment, the steam boiler 100 is provided with the sensing hole 101, and the conductive contact 410 is installed in the sensing hole 101 and extends into the steam boiler 100. The insulation member 420 is coated on the circumference of the wire contact 410 to isolate the wire contact 410 from the steam boiler 100.
The water supply device 200 includes a water pump 210 and a water tank 220 connected by a pipe, the water pump 210 is connected between the water tank 220 and the steam boiler 100, and a control plate 300 controls the operation state of the water pump 210.
The steam boiler 100 is provided with a temperature limiting device 500.
Preferably, the temperature limiting device 500 is a temperature controlled switch, and when the temperature of the steam boiler 100 exceeds a set value, the temperature controlled switch cuts off the circuit to stop the heating of the steam boiler 100, thereby reducing the temperature of the steam boiler 100 and preventing the overhigh temperature from affecting other components.
The steam boiler 100 is provided with a pressure limiting device 600.
Preferably, the pressure limiting device 600 is a pressure switch, and when the pressure of the steam boiler 100 exceeds a set value, the pressure switch is turned off to cut off the circuit.
Example 2
Specifically, referring to fig. 4, an automatic water supply steam generator includes a steam boiler 100 and a water supply device 200 connected by pipe fittings, wherein liquid water in the water supply device 200 enters the steam boiler 100 to be heated to form steam to be sprayed; the water supply device 200 and the steam boiler 100 are electrically connected with a control plate 300 and controlled by the control plate 300;
the steam boiler 100 is provided with the conductance detecting device 400, the conductance detecting device 400 is electrically connected with the control panel 300, the water level information in the steam boiler 100 can be fed back to the control panel 300, and the control panel 300 adjusts the water supply efficiency of the water supply device 200 according to different water level information.
In actual operation, the conductance detecting device 400 detects the water level in the steam boiler 100, and when the water level is above the detection point, the control board 300 receives a signal that the water amount in the steam boiler 100 is large, and controls the water supply device 200 to reduce the water supply efficiency, and the water amount introduced into the steam boiler 100 is reduced; when the water level in the steam boiler 100 is below the detection point, the control plate 300 receives a signal that the amount of water in the steam boiler 100 is small, controls the water supply device 200 to improve the water supply efficiency, and increases the amount of water introduced into the steam boiler 100. By controlling the amount of water supplied, the water level in the steam boiler 100 is maintained in a stable state, and the efficiency of generating steam in the steam boiler 100 is maintained in a stable state.
Specifically referring to fig. 5 and 6, the conductance detecting device 400 is a conductive contact 410, and the conductive contact 410 is mounted on the steam boiler 100 through an insulating member 420; the conductive contacts 410 are electrically connected to the control board 300.
When the water level in the steam boiler 100 is above the conductive contact 410, the conductive contact 410 contacts the liquid water in the steam boiler 100, and the liquid water has a conductive function, so as to communicate with the circuit of the conductivity detector 400. When the water level in the steam boiler 100 is below the conductive contact 410, the conductive contact 410 is not in contact with the liquid water in the steam boiler 100 but in contact with the steam, and the steam contains a certain amount of liquid water and has a certain conductive function, so that the liquid level detection circuit is connected. Since the liquid water and the steam have different conductivities, the control panel 300 receives two different current signals to determine the height of the water level.
The insulating member 420 is a liquid level pipe, and both ends of the liquid level pipe are connected to the inside of the steam boiler 100; the conductive contact 410 is disposed on the fluid level tube; the conductive contact 410 is connected with the control board 300 through a wire; when the water level in the liquid level pipe is lower than the contact, the control board 300 receives a first signal; the control board 300 receives the second signal when the water level in the fluid level tube is higher than the contact point.
In this embodiment, a liquid level pipe is provided as the insulating member 420, and the liquid level pipe communicates with the inner chamber of the steam boiler 100. According to the principle of communicating pipe isobaric, the water level in the liquid level pipe and the water level in the steam boiler 100 are always kept at the same level, i.e. the water level in the liquid level pipe is equal to the water level in the steam boiler 100. The conductive contact 410 is then placed on the fluid level tube for fluid level detection.
In this embodiment, the insulating member 420 is provided with a mounting hole 421, and the conductive contact 410 is mounted in the mounting hole 421 and extends into the insulating member 420.
The insulation member 420 is disposed outside the steam boiler 100 and both end portions are disposed up and down on the steam boiler 100.
Preferably, in this embodiment, the upper port of the liquid level pipe is connected to the top of the steam boiler 100, and the lower port of the liquid level pipe is connected to the lower end of the steam boiler 100 near the bottom, so that the liquid level pipe can completely correspond to the water level in the steam boiler 100.
The conductive contact 410 is disposed on the insulator 420 and extends into the interior cavity of the insulator 420.
When the water level in the steam boiler 100 is higher than the conductive contact 410, the liquid level in the liquid level pipe is also higher than the conductive contact 410, and the conductive contact 410 is in contact with the liquid water; when the water level in the steam boiler 100 is lower than the conductive contact 410, the liquid level in the liquid level pipe is also lower than the conductive contact 410, the steam generated in the steam boiler 100 enters the liquid level pipe, and the conductive contact 410 is in contact with the steam.
The insulating member 420 is a hose made of a rubber.
The water supply device 200 includes a water pump 210 and a water tank 220 connected by a pipe, the water pump 210 is connected between the water tank 220 and the steam boiler 100, and a control panel 300 controls the operating state of the water pump 210.
The steam boiler 100 is provided with a temperature limiting device 500.
Preferably, the temperature limiting device 500 is a temperature controlled switch, and when the temperature of the steam boiler 100 exceeds a set value, the temperature controlled switch cuts off the circuit, so that the steam boiler 100 stops heating, the temperature of the steam boiler 100 is reduced, and the influence of overhigh temperature on other components is avoided.
The steam boiler 100 is provided with a pressure limiting device 600.
Preferably, the pressure limiting device 600 is a pressure switch, and when the pressure of the steam boiler 100 exceeds a set value, the pressure switch is turned off to cut off the circuit.
Example 3
A kind of steam generating device which supplies water automatically, wrap the steam boiler 100 and water supply 200 that the pipe fittings connects, the liquid water in the water supply 200 enters the steam boiler 100 to heat and form the steam to squirt; the water supply device 200 and the steam boiler 100 are electrically connected with a control plate 300 and controlled by the control plate 300;
the steam boiler 100 is provided with the conductance detecting device 400, the conductance detecting device 400 is electrically connected with the control board 300, the water level information in the steam boiler 100 can be fed back to the control board 300, and the control board 300 adjusts the water supply efficiency of the water supply device 200 according to different water level information.
In actual operation, the conductance detecting device 400 detects the water level in the steam boiler 100, and when the water level is above the detecting point, the control board 300 receives a signal that the water amount in the steam boiler 100 is large, and controls the water supply device 200 to reduce the water supply efficiency, and the water amount introduced into the steam boiler 100 is reduced; when the water level in the steam boiler 100 is below the detection point, the control panel 300 receives a signal that the amount of water in the steam boiler 100 is small, controls the water supply device 200 to improve the water supply efficiency, and increases the amount of water introduced into the steam boiler 100. By controlling the amount of water supplied, the water level in the steam boiler 100 is maintained in a stable state, and the efficiency of generating steam in the steam boiler 100 is maintained in a stable state.
The conductance detecting means 400 is a conductive contact 410, and the conductive contact 410 is mounted to the steam boiler 100 through an insulating member 420; the conductive contacts 410 are electrically connected to the control board 300.
When the water level in the steam boiler 100 is above the conductive contact 410, the conductive contact 410 contacts the liquid water in the steam boiler 100, and the liquid water has a conductive function, so as to communicate with the circuit of the conductivity detector 400. When the water level in the steam boiler 100 is below the conductive contact 410, the conductive contact 410 is not in contact with the liquid water in the steam boiler 100 but in contact with the steam, and the steam contains a certain amount of liquid water and has a certain conductive function, so that the liquid level detection circuit is connected. Since the liquid water and the steam have different conductivities, the control panel 300 receives two different current signals to determine the height of the water level.
The insulating member 420 is a liquid level pipe, and both ends of the liquid level pipe are communicated with the steam boiler 100; the conductive contact 410 is disposed on the fluid level tube; the conductive contact 410 is connected with the control board 300 through a wire; when the water level in the liquid level pipe is lower than the contact, the control panel 300 receives a first signal; the control board 300 receives the second signal when the water level in the fluid level pipe is higher than the contact point.
In this embodiment, a liquid level pipe is provided as the insulating member 420, and the liquid level pipe communicates with the inner chamber of the steam boiler 100. According to the principle of communicating pipe isobaric pressure, the water level in the liquid level pipe and the water level in the steam boiler 100 are always kept on the same horizontal plane, i.e. the water level in the liquid level pipe is equal to the water level in the steam boiler 100. The conductive contact 410 is then placed on the fluid level tube for fluid level detection.
In this embodiment, the insulating member 420 is provided with a mounting hole 421, and the conductive contact 410 is mounted in the mounting hole 421 and extends into the insulating member 420.
The insulation member 420 is disposed outside the steam boiler 100, and both end portions are disposed horizontally on the steam boiler 100.
Arranging two end parts of a liquid level pipe in a horizontal position, then arranging a conductive contact 410 on the liquid level pipe, wherein the liquid level pipe with the conductive contact 410 is equivalent to a liquid level line, when the water level in the steam boiler 100 is higher than the liquid level line, liquid water is contained in the liquid level pipe, and the conductive contact 410 is contacted with the liquid water; when the water level in the steam boiler 100 is lower than the liquid level line, there is no liquid water in the liquid level tube, the liquid level tube is filled with steam in the steam boiler 100, and the conductive contact 410 is in contact with the steam.
The conductive contact 410 is disposed on the insulator 420 and extends into the interior cavity of the insulator 420.
The insulating member 420 is a hose made of a gel.
The water supply device 200 includes a water pump 210 and a water tank 220 connected by a pipe, the water pump 210 is connected between the water tank 220 and the steam boiler 100, and a control panel 300 controls the operating state of the water pump 210.
The steam boiler 100 is provided with a temperature limiting device 500.
Preferably, the temperature limiting device 500 is a temperature controlled switch, and when the temperature of the steam boiler 100 exceeds a set value, the temperature controlled switch cuts off the circuit, so that the steam boiler 100 stops heating, the temperature of the steam boiler 100 is reduced, and the influence of overhigh temperature on other components is avoided.
The steam boiler 100 is provided with a pressure limiting device 600.
Preferably, the pressure limiting device 600 is a pressure switch, and when the pressure of the steam boiler 100 exceeds a set value, the pressure switch is turned off, and the circuit is cut off.
The using mode of the utility model is consistent with that of the steam generating device in the prior art, and the description is omitted here.
The principle of automatic water replenishing is as follows: when the water level in the steam boiler is above the conductive contact, the control board receives a signal that the water amount in the steam boiler is more, controls the water pump to reduce the working efficiency, reduces the water supply efficiency, and reduces the water amount introduced into the steam boiler; when the water level in the steam boiler is below the conductive contact, the control board receives a signal that the water amount in the steam boiler is less, and the control board controls the water pump to improve the working efficiency, so that the water supply efficiency is improved, and the water amount introduced into the steam boiler is increased. The water level in the steam boiler is kept in a stable state by controlling the water supply amount, and further, the efficiency of generating steam in the steam boiler is kept in a stable state.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. A steam generator with automatic water supply comprises a steam boiler (100) and a water supply device (200) which are connected by pipe fittings, wherein liquid water in the water supply device (200) enters the steam boiler (100) to be heated to form steam ejection; the water supply device (200) and the steam boiler (100) are both electrically connected with a control plate (300) and controlled by the control plate (300);
the method is characterized in that: the steam boiler (100) is provided with a conductance detection device (400), the conductance detection device (400) is electrically connected with the control board (300), and when the water level is not lower than the conductance detection device (400), the control board (300) receives a first electric signal; when the water level is lower than the conductance detection device (400), the control board (300) receives a second electric signal; the control board (300) adjusts the water supply efficiency of the water supply device (200) according to the received different electric signals.
2. The steam generating apparatus for automatically supplying water according to claim 1, wherein: the conductance detecting device (400) is an electric conducting contact (410), and the electric conducting contact (410) is installed on the steam boiler (100) through an insulating piece (420); the conductive contact (410) is electrically connected to the control board (300).
3. The steam generating apparatus with automatic water supply according to claim 2, wherein: the insulating part (420) is a liquid level pipe, and two ends of the liquid level pipe are communicated into the water supply device (200); the conductive contact (410) is arranged on the liquid level pipe; the conductive contact (410) is connected with the control board (300) through a lead; when the water level in the liquid level pipe is lower than the contact, the control board (300) receives a first signal; when the water level in the liquid level pipe is higher than the contact point, the control panel (300) receives a second signal.
4. The automatic water supply steam generating apparatus of claim 3, wherein: the insulating member (420) is disposed outside the steam boiler (100) and both end portions are disposed up and down on the steam boiler (100).
5. The automatic water supply steam generating apparatus of claim 3, wherein: the insulating member (420) is disposed outside the steam boiler (100) with both end portions disposed in a horizontal position on the steam boiler (100).
6. The steam generating apparatus with automatic water supply according to claim 4 or 5, wherein: the conductive contact (410) is disposed on the insulator (420) and extends into the interior cavity of the insulator (420).
7. The steam generating apparatus with automatic water supply according to claim 4 or 5, wherein: the insulating member (420) is a hose made of a rubber.
8. The steam generating apparatus with automatic water supply according to claim 1, wherein: the water supply device (200) comprises a water pump (210) and a water tank (220) which are connected through a pipeline, the water pump (210) is connected between the water tank (220) and the steam boiler (100), and the control panel (300) controls the working state of the water pump (210).
9. The steam generating apparatus for automatically supplying water according to claim 1, wherein: the steam boiler (100) is provided with a temperature limiting device (500).
10. The steam generating apparatus with automatic water supply according to claim 1, wherein: the steam boiler (100) is provided with a pressure limiting device (600).
CN202220621750.0U 2022-03-21 2022-03-21 Automatic steam generator who supplies water Active CN217031159U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220621750.0U CN217031159U (en) 2022-03-21 2022-03-21 Automatic steam generator who supplies water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220621750.0U CN217031159U (en) 2022-03-21 2022-03-21 Automatic steam generator who supplies water

Publications (1)

Publication Number Publication Date
CN217031159U true CN217031159U (en) 2022-07-22

Family

ID=82456721

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220621750.0U Active CN217031159U (en) 2022-03-21 2022-03-21 Automatic steam generator who supplies water

Country Status (1)

Country Link
CN (1) CN217031159U (en)

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