Water outlet system capable of improving water outlet flow and water purifying and drinking machine
By designing a water outlet system including instant heat pipes, water outlet pipes, pure water tanks, first water inlet pipes and second water inlet pipes in the beverage purifier, the problem of low flow rate when the water outlet is discharged by the beverage purifier is solved. Achieve higher water flow rate and shorter waiting time.
Patent Information
- Application Number
- CN202420023514.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-01-04
AI Technical Summary
When the existing beverage purifier comes out of boiling water, the flow rate is low and the user needs to wait too long.
A water outlet system is designed to increase the water outlet flow, including instant heat pipes, water outlet pipes, pure water tanks, first water inlet pipes and second water inlet pipes. By preheating the pure water flowing out of the pure water tank into the second water inlet pipe, the pure water temperature entering the instant hot pipe is increased, and the time required for the instant hot pipe to heat the pure water is reduced, thereby increasing the flow rate of the outlet water.
It effectively increases the flow rate of boiling water from the beverage purifier and shortens the time for users to wait for water withdrawal.
Smart Images
Figure CN222510344U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water purification, in particular to a water outlet system and a water purifier capable of increasing the water outlet flow rate. Background Art
[0002] Instant water heating machines usually match the flow rate and power of the pump to perform heating (low flow rate and high power correspond to high water outlet temperature); when boiling water is discharged, the power is maximum and the flow rate is minimum, which is often only about 400ml / min. When the user takes a large amount of water (for example, 500ml), he needs to wait for more than 1 minute. This user experience is relatively poor.
[0003] In addition, the so-called boiling water is not really heated to 100℃. The atmospheric pressure is 100kpa, and the corresponding boiling point of water is 99.63℃. The temperature of conventional instant hot water is low, mainly because the boiling water temperature cannot be set too close to the boiling point, otherwise the water will vaporize in large quantities, causing steam to spray out of the water. Secondly, due to the inevitable fluctuations in the power, voltage and water flow rate of the instant thick film, a certain margin is generally left, which leads to the industry common problem of instant hot water not boiling. Utility Model Content
[0004] In view of this, the utility model provides a water outlet system and a water purifier with improved water outlet flow rate, which are used to solve the problem that when the water purifier in the prior art discharges boiled water, the flow rate is low and the user needs to wait for a long time.
[0005] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the utility model proposes a water outlet system for improving water outlet flow rate, including an instant heating pipeline, a water outlet pipeline, a pure water tank, a first water inlet pipeline and a second water inlet pipeline, the water inlet end of the instant heating pipeline is respectively connected with the water outlet end of the first water inlet pipeline and the water outlet end of the second water inlet pipeline, the water inlet end of the water outlet pipeline is connected with the water outlet end of the instant heating pipeline, the water outlet end of the pure water tank is respectively connected with the water inlet end of the first water inlet pipeline and the water inlet end of the second water inlet pipeline, and the second water inlet pipeline preheats the pure water flowing out of the pure water tank and entering its pipeline.
[0006] Preferably, the instant heating pipeline includes a first pipeline and an instant heating pipe, the instant heating pipe is arranged in the first pipeline, the first end of the first pipeline is the water inlet end of the instant heating pipeline, and the second end of the first pipeline is the water outlet end of the instant heating pipeline.
[0007] Preferably, the first water inlet pipeline includes a first water inlet pipeline and a first water pump, the first water pump is arranged in the first water inlet pipeline, the first end of the first water inlet pipeline is the water inlet end of the first water inlet pipeline, and the second end of the first water inlet pipeline is the water outlet end of the first water inlet pipeline.
[0008] Preferably, the water outlet pipeline comprises a water outlet pipe, a regulating valve and a water outlet nozzle, the regulating valve is arranged on the water outlet pipe, the first end of the water outlet pipe is the water inlet end of the water outlet pipe, and the second end of the water outlet pipe is connected to the water outlet nozzle.
[0009] Preferably, when the water outlet pipeline discharges water of normal temperature, the valve opening of the regulating valve is at a maximum opening.
[0010] Preferably, when boiling water flows out of the water outlet pipeline, the valve opening of the regulating valve is a first opening, and the first opening is smaller than the maximum opening.
[0011] Preferably, the second water inlet pipeline includes a second water inlet pipeline, a hot tank and a second water pump, the hot tank and the second water pump are arranged in the second water inlet pipeline, the hot tank is located before the second water pump, the first end of the second water inlet pipeline is the water inlet end of the second water inlet pipeline, and the second end of the second water inlet pipeline is the water outlet end of the second water inlet pipeline.
[0012] Preferably, the instant heating pipeline comprises a first NTC temperature sensor, and the first NTC temperature sensor is arranged in the first pipeline and located before the instant heating pipe.
[0013] Preferably, the instant heating pipeline includes a second NTC temperature sensor, which is arranged in the first pipeline and located after the instant heating pipe.
[0014] The utility model also discloses a water purifier, comprising a water outlet system for increasing the water outlet flow rate, the water outlet system for increasing the water outlet flow rate comprises an instant heating pipeline, a water outlet pipeline, a pure water tank, a first water inlet pipeline and a second water inlet pipeline, the water inlet end of the instant heating pipeline is respectively connected with the water outlet end of the first water inlet pipeline and the water outlet end of the second water inlet pipeline, the water inlet end of the water outlet pipeline is connected with the water outlet end of the instant heating pipeline, the water outlet end of the pure water tank is respectively connected with the water inlet end of the first water inlet pipeline and the water inlet end of the second water inlet pipeline, and the second water inlet pipeline preheats the pure water flowing out of the pure water tank and entering its pipeline.
[0015] Implementing the embodiments of the present utility model will have the following beneficial effects:
[0016] After adopting the above-mentioned water outlet system and water purifier for increasing the water outlet flow rate, if boiled water is needed, the first water inlet pipe is closed and the second water inlet pipe is opened, and the pure water flowing out of the pure water tank flows into the second water inlet pipe, and the second water inlet pipe heats the pure water, that is to say, the pure water entering the instant heating pipe is preheated, thereby increasing the temperature of the pure water entering the instant heating pipe and reducing the time required for the instant heating pipe to heat the pure water. Therefore, when setting the water outlet flow rate, the water outlet flow rate can be increased, thereby solving the problem in the prior art that when the water purifier discharges boiled water, the flow rate is low and the user needs to wait for too long. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] in:
[0019] Figure 1 It is a schematic diagram of the structure of a water outlet system for increasing the water outlet flow rate in an embodiment.
[0020] Description of reference numerals:
[0021] That is, the heat pipe 11, the first pipe 111, the heat pipe 113, the first NTC temperature sensor 114, the second NTC temperature sensor 115, the water outlet pipe 12, the water outlet pipe 121, the regulating valve 122, the water outlet nozzle 123, the pure water tank 13, the first water inlet pipe 21, the first water inlet pipe 211, the first water pump 212, the second water inlet pipe 22, the second water inlet pipe 221, the heat tank 222, and the second water pump 223. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.
[0025] Embodiment 1
[0026] like Figure 1 As shown, an embodiment of the utility model discloses a water outlet system for improving water outlet flow rate, comprising an instant heating pipeline 11, a water outlet pipeline 12, a pure water tank 13, a first water inlet pipeline 21 and a second water inlet pipeline 22, the water inlet end of the instant heating pipeline 11 is respectively connected with the water outlet end of the first water inlet pipeline 21 and the water outlet end of the second water inlet pipeline 22, the water inlet end of the water outlet pipeline 12 is connected with the water outlet end of the instant heating pipeline 11, the water outlet end of the pure water tank 13 is respectively connected with the water inlet end of the first water inlet pipeline 21 and the water inlet end of the second water inlet pipeline 22, and the second water inlet pipeline 22 preheats the pure water flowing out of the pure water tank 13 and entering its pipeline.
[0027] If boiling water is required, the first water inlet pipe 21 is closed and the second water inlet pipe 22 is opened, and the pure water flowing out of the pure water tank 13 flows into the second water inlet pipe 22, and the second water inlet pipe 22 heats the pure water, that is, preheats the pure water entering the instant heating pipe 11. In this way, the temperature of the pure water entering the instant heating pipe 11 can be increased, and the time required for the instant heating pipe 11 to heat the pure water can be reduced. Therefore, when setting the water outlet flow rate, the water outlet flow rate can be increased, thereby solving the problem in the prior art that when the water purifier discharges boiling water, the flow rate is low and the user needs to wait for too long.
[0028] In this embodiment, the instant heating pipeline 11 includes a first pipeline 111 and an instant heating pipe 113. The instant heating pipe 113 is arranged in the first pipeline 111. The first end of the first pipeline 111 is the water inlet end of the instant heating pipeline 11, and the second end of the first pipeline 111 is the water outlet end of the instant heating pipeline 11. The instant heating pipeline 11 flows pure water into the instant heating pipe 113 through the first pipeline 111, and the instant heating pipe 113 heats the pure water.
[0029] In this embodiment, the first water inlet pipeline 21 includes a first water inlet pipeline 211 and a first water pump 212. The first water pump 212 is disposed in the first water inlet pipeline 211. The first end of the first water inlet pipeline 211 is the water inlet end of the first water inlet pipeline 21, and the second end of the first water inlet pipeline 211 is the water outlet end of the first water inlet pipeline 21. When normal temperature water is required, the first water inlet pipeline 21 is opened, the second water inlet pipeline 22 is closed, and the pure water in the pure water tank 13 enters the first water inlet pipeline 211, and then the first water pump 212 delivers the pure water to the instant heating pipe 113.
[0030] In some embodiments, the first water inlet pipeline 21 includes a first water inlet solenoid valve, and the first water inlet solenoid valve is disposed in the first water inlet pipeline 211 .
[0031] In this embodiment, the water outlet pipeline 12 includes a water outlet pipeline 121, a regulating valve 122 and a water outlet nozzle 123. The regulating valve 122 is arranged on the water outlet pipeline 121. The first end of the water outlet pipeline 121 is the water inlet end of the water outlet pipeline 12, and the second end of the water outlet pipeline 121 is connected to the water outlet nozzle 123. The regulating valve 122 has a flow limiting function, which can increase the pressure in the heat pipe 113. Specifically, the pressure in the heat pipe 113 is increased to 150 kpa, at which time the water in the heat pipe 113 can be heated to 102°C without boiling.
[0032] In some embodiments, the distance between the water outlet 123 and the regulating valve 122 is shortened to a preset distance, which can reduce heat dissipation during the flow process.
[0033] In this embodiment, when the water outlet pipe 12 is discharging normal temperature water, the valve opening of the regulating valve 122 is at the maximum opening. When the water outlet pipe 12 is discharging normal temperature water, that is, the heat pipe 113 is not heated, the regulating valve 122 is fully opened, and the pipeline is not flow-restricted.
[0034] In this embodiment, when the water outlet pipe 12 is discharging boiling water, the valve opening of the regulating valve 122 is a first opening, and the first opening is smaller than the maximum opening. Specifically, the first opening is half of the maximum opening. When boiling water is discharged, the heat pipe 113 is heated, the regulating valve 122 is half-opened, the flow channel is reduced, and the pipeline is pressurized. Since the pressure is related to the boiling point of water, the greater the pressure, the higher the boiling point, thereby increasing the boiling point of the water at the heat pipe 113.
[0035] In this embodiment, the water outlet pipe 121 is a Teflon tube. The Teflon tube has high temperature resistance, thereby reducing heat dissipation.
[0036] In this embodiment, the instant heating pipeline 11 includes a first NTC temperature sensor 114, which is disposed in the first pipeline 111 and before the instant heating pipe 113. The first NTC temperature sensor 114 is used to detect the temperature of pure water entering the instant heating pipe 113.
[0037] In this embodiment, the instant heating pipeline 11 includes a second NTC temperature sensor 115, which is arranged in the first pipeline 111 and is located after the instant heating pipe 113. The second NTC temperature sensor 115 is used to detect the temperature of pure water flowing out after the instant heating pipe 113 is heated. When boiling water is discharged, although the instant heating pipe 113 has started heating, the power climbing process takes time and there is some residual water in the pipeline, so the temperature of the front water cannot reach the user set temperature. The second NTC temperature sensor 115 detects whether the temperature has reached the user's water intake temperature.
[0038] In this embodiment, the second water inlet pipeline 22 includes a second water inlet pipeline 221, a hot tank 222 and a second water pump 223. The hot tank 222 and the second water pump 223 are arranged in the second water inlet pipeline 221, the hot tank 222 is located before the second water pump 223, the first end of the second water inlet pipeline 221 is the water inlet end of the second water inlet pipeline, and the second end of the second water inlet pipeline 221 is the water outlet end of the second water inlet pipeline. If boiling water is required, the first water inlet pipeline 21 is closed and the second water inlet pipeline 22 is opened, that is, the hot tank 222 heats the pure water flowing into it from the pure water tank 13, and then outputs the heated pure water to the heat pipe 113 through the second water pump 223.
[0039] In some embodiments, the second water inlet pipeline 22 includes a second water inlet solenoid valve, which is disposed in the second water inlet pipeline 221 and located before the hot tank 222 .
[0040] Embodiment 2
[0041] like Figure 1 As shown, an embodiment of the utility model further discloses a water purifier, including a water outlet system for increasing the water outlet flow rate. Specifically, the water purifier includes a shell, and the water outlet system for increasing the water outlet flow rate is arranged in the shell. The water outlet system for increasing the water outlet flow rate includes an instant heating pipeline 11, a water outlet pipeline 12, a pure water tank 13, a first water inlet pipeline 21 and a second water inlet pipeline 22, the water inlet end of the instant heating pipeline 11 is respectively connected to the water outlet end of the first water inlet pipeline 21 and the water outlet end of the second water inlet pipeline 22, the water inlet end of the water outlet pipeline 12 is connected to the water outlet end of the instant heating pipeline 11, the water outlet end of the pure water tank 13 is respectively connected to the water inlet end of the first water inlet pipeline 21 and the water inlet end of the second water inlet pipeline 22, and the second water inlet pipeline 22 preheats the pure water flowing out of the pure water tank 13 and entering its pipeline.
[0042] If boiling water is required, the first water inlet pipe 21 is closed and the second water inlet pipe 22 is opened, and the pure water flowing out of the pure water tank 13 flows into the second water inlet pipe 22, and the second water inlet pipe 22 heats the pure water, that is, preheats the pure water entering the instant heating pipe 11. In this way, the temperature of the pure water entering the instant heating pipe 11 can be increased, and the time required for the instant heating pipe 11 to heat the pure water can be reduced. Therefore, when setting the water outlet flow rate, the water outlet flow rate can be increased, thereby solving the problem in the prior art that when the water purifier discharges boiling water, the flow rate is low and the user needs to wait for too long.
[0043] In this embodiment, the instant heating pipeline 11 includes a first pipeline 111 and an instant heating pipe 113. The instant heating pipe 113 is arranged in the first pipeline 111. The first end of the first pipeline 111 is the water inlet end of the instant heating pipeline 11, and the second end of the first pipeline 111 is the water outlet end of the instant heating pipeline 11. The instant heating pipeline 11 flows pure water into the instant heating pipe 113 through the first pipeline 111, and the instant heating pipe 113 heats the pure water.
[0044] In this embodiment, the first water inlet pipeline 21 includes a first water inlet pipeline 211 and a first water pump 212. The first water pump 212 is disposed in the first water inlet pipeline 211. The first end of the first water inlet pipeline 211 is the water inlet end of the first water inlet pipeline 21, and the second end of the first water inlet pipeline 211 is the water outlet end of the first water inlet pipeline 21. When normal temperature water is required, the first water inlet pipeline 21 is opened, the second water inlet pipeline 22 is closed, and the pure water in the pure water tank 13 enters the first water inlet pipeline 211, and then the first water pump 212 delivers the pure water to the instant heating pipe 113.
[0045] In some embodiments, the first water inlet pipeline 21 includes a first water inlet solenoid valve, and the first water inlet solenoid valve is disposed in the first water inlet pipeline 211 .
[0046] In this embodiment, the water outlet pipeline 12 includes a water outlet pipeline 121, a regulating valve 122 and a water outlet nozzle 123. The regulating valve 122 is arranged on the water outlet pipeline 121. The first end of the water outlet pipeline 121 is the water inlet end of the water outlet pipeline 12, and the second end of the water outlet pipeline 121 is connected to the water outlet nozzle 123. The regulating valve 122 has a flow limiting function, which can increase the pressure in the heat pipe 113. Specifically, the pressure in the heat pipe 113 is increased to 150 kpa, at which time the water in the heat pipe 113 can be heated to 102°C without boiling.
[0047] In some embodiments, the distance between the water outlet 123 and the regulating valve 122 is shortened to a preset distance, which can reduce heat dissipation during the flow process.
[0048] In this embodiment, when the water outlet pipe 12 is discharging normal temperature water, the valve opening of the regulating valve 122 is at the maximum opening. When the water outlet pipe 12 is discharging normal temperature water, that is, the heat pipe 113 is not heated, the regulating valve 122 is fully opened, and the pipeline is not flow-restricted.
[0049] In this embodiment, when the water outlet pipe 12 is discharging boiling water, the valve opening of the regulating valve 122 is a first opening, and the first opening is smaller than the maximum opening. Specifically, the first opening is half of the maximum opening. When boiling water is discharged, the heat pipe 113 is heated, the regulating valve 122 is half-opened, the flow channel is reduced, and the pipeline is pressurized. Since the pressure is related to the boiling point of water, the greater the pressure, the higher the boiling point, thereby increasing the boiling point of the water at the heat pipe 113.
[0050] In this embodiment, the water outlet pipe 121 is a Teflon tube. The Teflon tube has high temperature resistance, thereby reducing heat dissipation.
[0051] In this embodiment, the instant heating pipeline 11 includes a first NTC temperature sensor 114, which is disposed in the first pipeline 111 and before the instant heating pipe 113. The first NTC temperature sensor 114 is used to detect the temperature of pure water entering the instant heating pipe 113.
[0052] In this embodiment, the instant heating pipeline 11 includes a second NTC temperature sensor 115, which is arranged in the first pipeline 111 and is located after the instant heating pipe 113. The second NTC temperature sensor 115 is used to detect the temperature of pure water flowing out after the instant heating pipe 113 is heated. When boiling water is discharged, although the instant heating pipe 113 has started heating, the power climbing process takes time and there is some residual water in the pipeline, so the temperature of the front water cannot reach the user set temperature. The second NTC temperature sensor 115 detects whether the temperature has reached the user's water intake temperature.
[0053] In this embodiment, the second water inlet pipeline 22 includes a second water inlet pipeline 221, a hot tank 222 and a second water pump 223. The hot tank 222 and the second water pump 223 are arranged in the second water inlet pipeline 221, the hot tank 222 is located before the second water pump 223, the first end of the second water inlet pipeline 221 is the water inlet end of the second water inlet pipeline, and the second end of the second water inlet pipeline 221 is the water outlet end of the second water inlet pipeline. If boiling water is required, the first water inlet pipeline 21 is closed and the second water inlet pipeline 22 is opened, that is, the hot tank 222 heats the pure water flowing into it from the pure water tank 13, and then outputs the heated pure water to the heat pipe 113 through the second water pump 223.
[0054] In some embodiments, the second water inlet pipeline 22 includes a second water inlet solenoid valve, which is disposed in the second water inlet pipeline 221 and located before the hot tank 222 .
[0055] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A water outlet system for increasing water outlet flow, characterized in that: It includes an instant heating pipeline, a water outlet pipeline, a pure water tank, a first water inlet pipeline and a second water inlet pipeline, the water inlet end of the instant heating pipeline is respectively connected with the water outlet end of the first water inlet pipeline and the water outlet end of the second water inlet pipeline, the water inlet end of the water outlet pipeline is connected with the water outlet end of the instant heating pipeline, the water outlet end of the pure water tank is respectively connected with the water inlet end of the first water inlet pipeline and the water inlet end of the second water inlet pipeline, and the second water inlet pipeline preheats the pure water flowing out of the pure water tank and entering its pipeline; The water outlet pipeline comprises a water outlet pipeline, a regulating valve and a water outlet nozzle. The regulating valve is arranged on the water outlet pipeline. The first end of the water outlet pipeline is the water inlet end of the water outlet pipeline. The second end of the water outlet pipeline is connected to the water outlet nozzle.
2. The water outlet system for increasing the water outlet flow rate according to claim 1, characterized in that: The instant heating pipeline includes a first pipeline and an instant heating pipe, the instant heating pipe is arranged in the first pipeline, the first end of the first pipeline is the water inlet end of the instant heating pipeline, and the second end of the first pipeline is the water outlet end of the instant heating pipeline.
3. The water outlet system for increasing water outlet flow rate according to claim 1, characterized in that: The first water inlet pipeline includes a first water inlet pipeline and a first water pump, the first water pump is arranged in the first water inlet pipeline, the first end of the first water inlet pipeline is the water inlet end of the first water inlet pipeline, and the second end of the first water inlet pipeline is the water outlet end of the first water inlet pipeline.
4. The water outlet system for increasing water outlet flow rate according to claim 1, characterized in that: When the water outlet pipe discharges water of normal temperature, the valve opening of the regulating valve is at the maximum opening.
5. The water outlet system for increasing the water outlet flow rate according to claim 4, characterized in that: When boiling water flows out of the water outlet pipeline, the valve opening of the regulating valve is a first opening, and the first opening is smaller than the maximum opening.
6. The water outlet system for increasing water outlet flow rate according to claim 1, characterized in that: The second water inlet pipeline includes a second water inlet pipeline, a hot tank and a second water pump. The hot tank and the second water pump are arranged in the second water inlet pipeline. The hot tank is located before the second water pump. The first end of the second water inlet pipeline is the water inlet end of the second water inlet pipeline, and the second end of the second water inlet pipeline is the water outlet end of the second water inlet pipeline.
7. The water outlet system for increasing water outlet flow rate according to claim 2, characterized in that: The instant heating pipeline includes a first NTC temperature sensor, which is arranged on the first pipeline and located before the instant heating pipe.
8. The water outlet system for increasing water outlet flow rate according to claim 2, characterized in that: The instant heating pipeline includes a second NTC temperature sensor, which is arranged on the first pipeline and located after the instant heating pipe.
9. A water purifier, characterized in that: The invention comprises a water outlet system for increasing the water outlet flow rate, wherein the water outlet system for increasing the water outlet flow rate comprises an instant heating pipeline, a water outlet pipeline, a pure water tank, a first water inlet pipeline and a second water inlet pipeline, the water inlet end of the instant heating pipeline is respectively connected with the water outlet end of the first water inlet pipeline and the water outlet end of the second water inlet pipeline, the water inlet end of the water outlet pipeline is connected with the water outlet end of the instant heating pipeline, the water outlet end of the pure water tank is respectively connected with the water inlet end of the first water inlet pipeline and the water inlet end of the second water inlet pipeline, and the second water inlet pipeline preheats the pure water flowing out of the pure water tank and entering its pipeline; the water outlet pipeline comprises a water outlet pipeline, a regulating valve and a water outlet nozzle, the regulating valve is arranged on the water outlet pipeline, the first end of the water outlet pipeline is the water inlet end of the water outlet pipeline, and the second end of the water outlet pipeline is connected with the water outlet nozzle.