CN218722330U - Automatic evacuation hot water system - Google Patents
Automatic evacuation hot water system Download PDFInfo
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- CN218722330U CN218722330U CN202220475491.5U CN202220475491U CN218722330U CN 218722330 U CN218722330 U CN 218722330U CN 202220475491 U CN202220475491 U CN 202220475491U CN 218722330 U CN218722330 U CN 218722330U
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Abstract
The utility model belongs to the water treatment field, concretely relates to automatic evacuation hot water system. The cold water inlet of the heating unit of the utility model is connected with the purified water outlet of the purified water unit, and the hot water outlet of the heating unit is provided with a hot water discharge pipeline; the pump body is arranged on the hot water discharge pipeline, and the input end of the pump body is connected with the hot water outlet of the heating unit; the pump body is electrically connected with the control unit and is used for discharging hot water in the heating unit through the hot water discharge pipeline. The utility model only arranges a group of hot water discharge pipelines at the hot water outlet, and the same pipeline is shared when the hot water is discharged and the system discharges the hot water, thereby optimizing the structural design of the pipeline; the utility model discloses further set up the pump body at hot water discharge pipe, improve hot water flow stability, optimize the consumer and use experience, can realize simultaneously under the unmanned on duty's the condition, accomplish whole evacuation hot water operation.
Description
Technical Field
The utility model belongs to the water treatment field, concretely relates to automatic evacuation hot water system.
Background
A water purifier is generally equipped with a heating function, wherein a hot water storage tank is provided inside the water purifier having the heating function. The hot water in the hot water storage tank can influence the taste of the hot water after being stored for a long time, and meanwhile, the repeatedly heated water in the hot water tank can generate harmful substances. The existing purification and heating integrated all-in-one machine generally does not have an independent hot water emptying pipeline, and cannot realize the function of automatically emptying hot water from a sewer. When the overnight hot water needs to be emptied, the user needs to discharge the water through manual operation of the faucet, and the use experience is reduced.
Patent document 1 provides a water purification system and a water purifier, including a water purification device, a heating device and an active emptying device, the water purification device has a first water outlet branch and a normal-temperature water outlet branch, and the normal-temperature water outlet branch is used for providing normal-temperature water. Heating device is including a jar body, jar body one side has the entry branch road, the opposite side has hot water outlet branch road and evacuation branch road, first play water branch road and entry branch road intercommunication and for the entry branch road water supply, the hot water outlet branch road is used for providing hot water, initiative emptying devices locates on the evacuation branch road, and be constructed for being used for discharging the internal water of jar from the evacuation branch road, so through initiative emptying devices's setting, when needs are with the internal water discharge of jar, initiatively with the internal water of jar on to the evacuation branch road, and from evacuation branch road discharge clean system, thereby the quick thorough water discharge with the internal jar, the cleanness and the freshness of water have been guaranteed.
However, it is worth pointing out that, in patent document 1, the hot water outlet branch 212 and the hot old water drain branch 213 of the hot tank 21 are independent two ways, and the piping structure is complicated; meanwhile, hot water is pushed out by pushing water, the flow of hot water is pushed out by pushing water, and the flow stability is low. Moreover, most of the time, the section (31, 32) from the outlet at the bottom of the hot tank to 213 has no hot water, so that bacteria are easy to breed, and the water quality in the hot tank is influenced.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
Aiming at the problem that the design defect of a hot water discharge system of a hot tank in the prior art causes the reduction of the user experience degree, the utility model provides an automatic emptying hot water system, which comprises a heating unit and a pump body, wherein a cold water inlet of the heating unit is connected with a purified water outlet of a purified water unit, and a hot water outlet of the heating unit is provided with a hot water discharge pipeline; the pump body is arranged on the hot water discharge pipeline, and the input end of the pump body is connected with the hot water outlet of the heating unit; the pump body is electrically connected with the control unit and is used for discharging hot water in the heating unit through the hot water discharge pipeline. The utility model only arranges a group of hot water discharge pipelines at the hot water outlet, and the same pipeline is shared when the hot water is discharged and the system discharges the hot water, thereby optimizing the structural design of the pipeline; meanwhile, the pump body is arranged on the hot water discharge pipeline, so that the hot water flow stability is improved, the design defect of hot water discharge of a hot tank in the prior art is overcome, and the use experience of consumers is optimized.
Based on the above-mentioned system, the utility model provides a hot water discharge method, the different preset condition of accessible sends out hot water evacuation instruction to the pump body, and convenient to use person uses, further improves and uses experience.
2. Technical scheme
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
the utility model provides an automatic evacuation hot water system, include:
a control unit;
the water purification unit is used for filtering raw water and is provided with a purified water outlet;
a cold water inlet of the heating unit is connected with a purified water outlet of the purified water unit, and a hot water outlet of the heating unit is provided with a hot water discharge pipeline; and
the pump body is arranged on the hot water discharge pipeline, and the input end of the pump body is connected with the hot water outlet of the heating unit; the pump body is electrically connected with the control unit and is used for discharging hot water in the heating unit through the hot water discharge pipeline.
Preferably, the input end of the pump body is arranged coaxially with the hot water outlet of the heating unit.
Preferably, the hot water switching device further comprises a hot water switching unit, a waste water output pipeline and a hot water outlet faucet, wherein the waste water output pipeline and the hot water outlet faucet are both connected with a hot water discharge pipeline;
the hot water switching unit is electrically connected with the control unit, arranged at the output end of the pump body and used for controlling hot water to flow to a hot water outlet tap or a waste water output pipeline.
Preferably, the waste water output pipeline is connected with the waste water output end of the water purification unit and used for mixing the waste water generated by the water purification unit with the hot water generated by the heating unit and discharging the mixed waste water.
Preferably, the hot water switching device includes:
the input end of the three-way valve is connected with the hot water outlet of the heating unit through a connecting pipeline, the output end of the three-way valve comprises two discharge pipelines, one is communicated with the hot water discharge pipeline, and the other is communicated with a hot water outlet faucet; and
and the switch control unit is used for controlling the on-off of the hot water automatic discharge pipeline according to the switching instruction of the control unit.
Preferably, a concentrated water throttling device is arranged on the waste water output pipeline, and the concentrated water throttling device is arranged between a connection node of the hot water discharge pipeline and the waste water output pipeline and the water purification unit;
the water pressure of the pipeline in front of the concentrated water throttling device is P 1 The water pressure of the pipeline behind the concentrated water throttling device is P 2 The water pressure of the hot water discharge pipeline is P 3 The concentrated water throttling device is used for enabling the water pressure in the pipeline to meet P 1 ＞P 3 ＞P 2 。
Preferably, the hot water discharge line is a U-shaped pipe.
Based on foretell automatic emptying hot water system, the utility model discloses further provide a hot water discharge method, the method includes following step: when the preset conditions are met, the control unit sends out a hot water emptying instruction, the pump body receives the hot water emptying instruction, and hot water in the heating unit is discharged;
the preset conditions include:
when the preset time period is met, the control unit automatically sends out a hot water emptying instruction; or
When receiving a remote control instruction, the control unit sends out a hot water emptying instruction; or
When the drainage control key is triggered, the control unit sends out a hot water drainage instruction.
Preferably, the emptying hot water system is provided with a hot water switching unit and a waste water output pipeline;
the preset conditions comprise a hot water emptying step in unattended time, and the hot water emptying step comprises the following steps: the control unit detects the hot water temperature in the heating unit, when the control unit detects that the hot water temperature of the waste water output pipeline that drains into in the heating unit exceeds a preset threshold value, sends a control signal to the water purification unit, makes the water purification unit enter into the normal water making process, and mixes the waste water that produces in the normal water making process with the hot water in the hot water discharge pipeline through the waste water discharge pipeline.
Preferably, the emptying hot water system is provided with a hot water switching unit, a waste water output pipeline and a hot water outlet faucet;
the preset condition includes a hot water discharging step when the hot water is normally used, the hot water discharging step includes: the control unit detects the heating unit, and when the hot water in the heating unit is emptied, the hot water switching unit is switched to enable the hot water discharge pipeline and the waste water output pipeline to be in an open circuit state, and meanwhile, the hot water discharge pipeline and the hot water outlet faucet are kept in a communicated state, so that the hot water in the heating unit can be discharged from the hot water outlet faucet.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model discloses an automatic emptying hot water system, which comprises a heating unit and a pump body, wherein a cold water inlet of the heating unit is connected with a purified water outlet of the purified water unit, and a hot water outlet of the heating unit is provided with a hot water discharge pipeline; the pump body is arranged on the hot water discharge pipeline, and the input end of the pump body is connected with the hot water outlet of the heating unit; the pump body is electrically connected with the control unit and is used for discharging hot water in the heating unit through the hot water discharge pipeline. The utility model only arranges a group of hot water discharge pipelines at the hot water outlet, and the same pipeline is shared when the hot water is discharged and the system discharges the hot water, thereby optimizing the structural design of the pipeline; meanwhile, the pump body is arranged on the hot water discharge pipeline, so that the hot water flow stability is improved, the design defect of hot water discharge of a hot tank in the prior art is overcome, and the use experience of consumers is optimized.
(2) The utility model discloses an automatic evacuation hot water system can be when satisfying preset condition automatically with the hot water evacuation through the control unit, can realize under the unmanned on duty's the condition, accomplishes whole evacuation hot water operation.
(3) The utility model discloses an automatic evacuation hot-water heating system, at the hot-water discharge in-process, selectively mix the waste water of water purification unit and exhaust hot water and discharge, and then can effectual reduction temperature, prevent to scald damage to sewer pipe.
(4) The utility model discloses an automatic evacuation hot water system, hot water discharge pipeline are provided with U type trap, can play the effect of water seal, avoid the downcomer peculiar smell palirrhea.
(5) The hot water discharging method of the utility model can send out hot water emptying instructions to the pump body through different preset conditions, thereby being convenient for users to use and further improving the use experience; meanwhile, the hot water can be emptied by remote control or according to a preset time period, so that the operation is flexible and convenient; moreover, the utility model discloses still provide user's manually operation tap's mode, supply the evacuation of user's manual selection, its flexibility of operation is stronger.
Drawings
Fig. 1 is a schematic diagram of the system structure of the present invention.
Detailed Description
The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced, and in which elements and features of the invention are identified by reference numerals. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to provide the best mode contemplated for carrying out the invention and to enable any person skilled in the art to practice the invention.
It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to illustrate the present state of the art and the meaning of the present development and is not intended to limit the present invention or the present application and the field of application of the present invention.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art. The present invention will be further described with reference to the following specific embodiments.
As shown in fig. 1, the utility model discloses an automatic emptying hot water system, including the control unit, water purification unit, heating unit and the pump body. The control unit is electrically connected with other units and can be used for monitoring and controlling the running states of other units. In some embodiments, the control unit includes a water storage detection module (e.g., a level sensor) that can detect whether the water in the heating unit is empty. If the hot water is exhausted, a corresponding instruction is generated to control the hot water exhaust pipeline to be in an open circuit state. In some embodiments, the control unit may further include a temperature detection module, preferably a temperature sensor, for detecting a temperature of hot water in the heating unit and outputting the detected value when the system starts automatic water discharge.
The water purification unit is used for filtering raw water and is provided with a purified water outlet. In some embodiments, the water purification unit is a cartridge. The water purification unit also comprises a tap water control valve, a water inlet electromagnetic valve connected with the tap water control valve, a water pump connected with the water inlet electromagnetic valve and a filter element connected with the water pump. Wherein, the filter core includes raw water import, pure water export and waste water export. The purified water outlet is connected with a cold water tap of a user through a first water supply pipeline, and is connected with a cold water inlet of the heating unit through a second water supply pipeline. The cold water faucet and the hot water faucet can be the same faucet, so that a user can discharge cold water, normally discharge hot water or manually drain hot water by using the hot water faucet.
The cold water inlet of the heating unit is connected with the purified water outlet of the purified water unit, and the hot water outlet of the heating unit is provided with a hot water discharge pipeline. In some embodiments, the heating unit includes a water reservoir and a heating element. The output of water storage courage is connected with the input of the pump body, and the heating element is arranged in heating the hot water in the water storage courage, can encircle to set up in water storage courage week, also can set up in the top or the bottom of water storage courage. In a preferred embodiment, the heating element is disposed at the bottom of the water container and is annularly disposed at the bottom of the water container.
The pump body is arranged on the hot water discharge pipeline, and the input end of the pump body is connected with the hot water outlet of the heating unit; the pump body is electrically connected with the control unit and is used for discharging hot water in the heating unit through the hot water discharge pipeline. In some embodiments, the input end of the pump body is coaxially disposed with the hot water outlet of the heating unit, facilitating rapid discharge of the water.
The system can be integrated in the water purifier, the operation of emptying hot water can be finished in an unattended state, and the whole water drainage operation can be finished in each process under automatic coordination. Meanwhile, the utility model only arranges a group of hot water discharge pipelines at the hot water outlet, and the same pipeline is shared when the hot water is discharged and the hot water is discharged from the system, thereby optimizing the structural design of the pipeline; meanwhile, the pump body is arranged on the hot water discharge pipeline, so that the hot water flow stability is improved, the design defect of hot water discharge of a hot tank in the prior art is overcome, and the use experience of consumers is optimized.
In some embodiments, the utility model discloses still include hot water switch unit, waste water output pipeline and hot water outlet tap all are connected with hot water discharge line. The hot water switching unit is electrically connected with the control unit and arranged at the output end of the pump body, and the hot water switching unit can control hot water to flow to the hot water outlet faucet or the waste water output pipeline according to a switching instruction of the control unit.
In a preferred embodiment, the waste water output pipeline is connected with the waste water output end of the water purification unit and is used for mixing and discharging the waste water generated by the water purification unit and the hot water generated by the heating unit. The waste water generated by the water purifying unit can be selectively mixed with hot water, so that the sewer pipeline is protected from being scalded by the high-temperature hot water. It can be understood that when the temperature of the hot water is higher than the preset value, the mixed discharge of the waste water is started when the hot water is discharged, and when the temperature of the hot water is lower than the preset value (the temperature of the hot water does not cause damage to the sewer pipe), the hot water can be directly discharged without mixing the waste water. Meanwhile, the waste water generated by the water purification unit can be discharged from the waste water output pipeline independently, and the hot water in the hot water discharge pipeline can be discharged from the waste water output pipeline independently.
In some embodiments, the hot water switching device includes a three-way valve and an on-off control unit, an input end of the three-way valve is connected with the hot water outlet of the heating unit through a connecting pipeline, and an output end of the three-way valve includes two discharge pipelines, one of which is communicated with the hot water discharge pipeline, and the other is communicated with the hot water outlet faucet. The switch control unit is used for controlling the on-off of the hot water automatic discharge pipeline according to the switching instruction of the control unit so as to change the flow direction of hot water.
It should be noted that in some embodiments, the hot water switching device may also be a two-way valve structure, an input end of the two-way valve is connected to a hot water outlet of the heating unit through a connecting pipeline, an output end of the two-way valve is directly connected to a hot water discharging pipeline, and a hot water outlet tap may be directly connected to a hot water output end of the pump body.
In some embodiments, a concentrated water throttling device is arranged on the waste water output pipeline, and the concentrated water throttling device is arrangedBetween the connection node of the hot water discharge pipeline and the waste water output pipe and the water purification unit. Meanwhile, the water pressure of a pipeline in front of the concentrated water throttling device is P 1 The water pressure of the pipeline behind the concentrated water throttling device is P 2 The water pressure of the hot water discharge pipeline is P 3 The concentrated water throttling device is used for enabling the water pressure in the pipeline to meet the requirement P 1 ＞P 3 ＞P 2 。
In order to guarantee normal drainage, avoid the influence of the peculiar smell among the drainage pipe to the water purifier pipeline, in some embodiments, hot water discharge pipeline is the U-shaped pipe, can play the effect of water seal, avoids the downcomer peculiar smell palirrhea.
Based on foretell automatic emptying hot water system, the utility model discloses further provide a hot water discharge method, the method includes following step: when the preset conditions are met, the control unit sends out a hot water emptying instruction, the pump body receives the hot water emptying instruction, and hot water in the heating unit is discharged.
In some embodiments, the preset conditions include: when a preset time period is met (for example, a preset time is set, when a module such as a timer of the control unit detects that the hot water storage time in the hot water unit exceeds the preset time, evacuation operation is executed), the control unit automatically sends out an evacuation hot water instruction, and the whole evacuation hot water operation can be completed under the unattended condition.
In some embodiments, the preset conditions include: and when receiving the remote control command, the control unit sends out a hot water emptying command. For example, the control unit is connected with terminal equipment such as a mobile phone, a computer and the like through a communication module, remote operation is executed through application software in the mobile phone or the computer, and the control unit automatically generates and executes a hot water emptying instruction according to information of the remote operation.
In some embodiments, the preset conditions include: when the drainage control key is triggered, the control unit sends out a hot water drainage instruction. The drainage control key can be configured on the water purifier and is electrically connected with the control unit, the control unit is used for receiving the touch signal of the drainage control key, and generating and executing a corresponding hot water emptying instruction according to the touch signal, so that the operation flexibility is stronger.
In some embodiments, the control unit may determine whether a temperature detection value of hot water of the heating unit exceeds a predetermined threshold according to a feedback signal of the temperature detection device, and generate a control signal to the water purification unit when the temperature detection value exceeds the threshold, so that the water purification unit prepares cold water, and simultaneously mixes waste water generated in a normal water preparation process with the hot water to be discharged. It should be noted that, when the auxiliary hot water is discharged after the water production by the water purification unit is started, the temperature of the hot water in the heating unit needs to be monitored in real time, and the water production by the water purification unit can be stopped when the detected temperature of the hot water is lower than the predetermined threshold.
On above-mentioned cooling basis, when the normal system water of water purification unit, the waste water that will produce further utilizes, carries out mixing output with exhaust waste water and hot water exhaust pipe in, when guaranteeing waste water exhaust, effectively cools down exhaust hot water, protection sewer pipe. In a preferred embodiment, a check valve may be further provided in the hot water drain line, the check valve facing the sewer line.
In some embodiments, when the evacuated hot water system is provided with a hot water switching unit and a wastewater output line, the preset condition includes an unattended evacuated hot water step including: the control unit detects the temperature of hot water in the heating unit, and when the control unit detects that the temperature of the hot water discharged into the waste water output pipeline in the heating unit exceeds a preset threshold value, a control signal is sent to the water purification unit, so that the water purification unit enters a normal water making process, and the waste water generated in the normal water making process is mixed with the hot water in the hot water discharge pipeline through the waste water discharge pipeline.
In some embodiments, when the evacuated hot water system is provided with a hot water switching unit, a waste water output line, and a hot water outlet tap, the preset condition includes a hot water discharging step when the hot water is normally used, the hot water discharging step includes: the control unit detects the heating unit, and when the hot water in the heating unit is emptied, the hot water switching unit is switched to enable the hot water discharge pipeline and the waste water output pipeline to be in an open circuit state, and meanwhile, the hot water discharge pipeline and the hot water outlet faucet are kept in a communicated state, so that the hot water in the heating unit can be discharged from the hot water outlet faucet.
As a specific embodiment, as shown in fig. 1, the automatic emptying system comprises a heating unit, a water purifying unit, a water faucet and a pump body. The cold water inlet of the heating unit is connected with the output end of the water purifying unit, the heating unit is provided with an exhaust pipeline connected with a water tap, and the hot water outlet of the heating unit is connected with the input end of the pump body. The raw water inlet of the water purification unit is connected with a tap water pipe, the purified water outlet is connected with a faucet and the heating unit through pipelines, the corresponding pipelines are provided with electromagnetic valves, the concentrated water outlet of the water purification unit is connected with a wastewater output pipeline, and one side of the wastewater output pipe, which is close to the water purification unit, is provided with a concentrated water throttling device. The output end of the pump body is connected with a hot water switching device, the hot water switching device is a switching valve (three-way valve), so that a hot water discharge pipeline can be simultaneously connected with a waste water output pipe and a faucet, and the hot water discharge pipeline between the hot water switching device and the waste water output pipeline is provided with a one-way valve.
Above-mentioned embodiment can accomplish whole evacuation hot water operation under the unmanned on duty's of realization condition to mix the discharge through waste water and discharged hot water, effectively reduce the temperature, prevent to scald the damage of sewer pipe.
More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments modified, omitted, such as combinations between various embodiments, adapted changes and/or substitutions as would be recognized by those skilled in the art from the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (7)
1. An auto-emptying hot water system, comprising:
a control unit;
the water purification unit is used for filtering raw water and is provided with a purified water outlet;
a cold water inlet of the heating unit is connected with a purified water outlet of the water purifying unit, and a hot water outlet of the heating unit is provided with a hot water discharge pipeline; and
the pump body is arranged on the hot water discharge pipeline, and the input end of the pump body is connected with the hot water outlet of the heating unit; the pump body is electrically connected with the control unit and used for discharging the hot water in the heating unit through the hot water discharge pipeline.
2. An automatically emptying hot water system according to claim 1, characterized in that: the input end of the pump body is coaxial with the hot water outlet of the heating unit.
3. An automatically emptying hot water system according to claim 1, characterized in that: the hot water switching device also comprises a hot water switching unit, a waste water output pipeline and a hot water outlet faucet, wherein the waste water output pipeline and the hot water outlet faucet are both connected with the hot water discharge pipeline;
the hot water switching unit is electrically connected with the control unit and arranged at the output end of the pump body, and the hot water switching unit is used for controlling hot water to flow to a hot water outlet tap or a waste water output pipeline.
4. An auto-emptying hot water system as claimed in claim 3, wherein: and the waste water output pipeline is connected with the waste water output end of the water purification unit and is used for mixing and discharging the waste water generated by the water purification unit and the hot water generated by the heating unit.
5. An auto-emptying hot water system as claimed in claim 3, wherein the hot water switching unit comprises:
the input end of the three-way valve is connected with the hot water outlet of the heating unit through a connecting pipeline, and the output end of the three-way valve comprises two discharge pipelines, one pipeline is communicated with the hot water discharge pipeline, and the other pipeline is communicated with the hot water outlet faucet; and
and the switch control unit is used for controlling the on-off of the hot water automatic discharge pipeline according to the switching instruction of the control unit.
6. An automatically emptying hot water system according to claim 4, characterized in that: a concentrated water throttling device is arranged on the waste water output pipeline and is arranged between the connection node of the hot water discharge pipeline and the waste water output pipeline and the water purification unit;
the water pressure of the pipeline in front of the concentrated water throttling device is P 1 The water pressure of the pipeline behind the concentrated water throttling device is P 2 The water pressure of the hot water discharge pipeline is P 3 The concentrated water throttling device is used for enabling the water pressure in the pipeline to meet the requirement P 1 ＞P 3 ＞P 2 。
7. An auto-emptying hot water system as claimed in any one of claims 1 to 6, characterized in that: the hot water discharge pipeline is a U-shaped pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220475491.5U CN218722330U (en) | 2022-03-04 | 2022-03-04 | Automatic evacuation hot water system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220475491.5U CN218722330U (en) | 2022-03-04 | 2022-03-04 | Automatic evacuation hot water system |
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| Publication Number | Publication Date |
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| CN218722330U true CN218722330U (en) | 2023-03-24 |
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| CN202220475491.5U Active CN218722330U (en) | 2022-03-04 | 2022-03-04 | Automatic evacuation hot water system |
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