Accurate temperature control water purifier with recyclable water path
Patent Information
- Application Number
- CN202522204317.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-19
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-10-19
AI Technical Summary
[0003]所以，常规出水升温慢，出热水慢，出水前段有冷水或温度不够的水，达到设定温度需要10s、100ml左右
[0016] This water purifier with a circulating water circuit and precise temperature control uses a hot water switching valve at the outlet of the heating element to pre-drain the initial cold water during water intake, ensuring that the water flowing through the outlet reaches the set temperature before reaching the user's cup. The initial cold water is pre-drained into the raw water tank to prevent it from being discharged from the water intake or drain outlet, thus avoiding water waste. When the user wants to drink room temperature water, they only need to keep the heater off and the normally closed return port closed, and the water flowing out of the outlet will be room temperature water, achieving free access to water.
Smart Images
Figure CN224728362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water purification equipment technology, specifically to a precision temperature-controlled water purifier with a circulating water path. Background Technology
[0002] With increasing health awareness and the widespread use of water purifiers, countertop instant hot water purifiers have emerged and are gaining a larger market share, bringing great convenience to people's hot water needs. At the same time, the demands for water purifier functions are becoming increasingly stringent. Many users need to make tea, prepare baby formula, or cook health-promoting foods, thus requiring a certain heating speed to ensure the water temperature in the cup is adequate. Most instant hot water purifiers or instant hot water dispensers on the market advertise 3-second rapid heating, but in reality, most machines require a considerable amount of time to heat the water to reach the set temperature because there is residual water in the heating element after a period of inactivity. If a small cup of 60°C hot water is used to prepare baby formula, the water temperature in the cup will be lower than the temperature displayed on the water purifier screen.
[0003] Therefore, the water temperature rises slowly with normal dispensing, and hot water comes out slowly. There is cold water or water that is not hot enough at the beginning of the dispensing process, and it takes about 10 seconds and 100ml to reach the set temperature. If the user takes a small amount of hot water, such as 150-500ml, the temperature in the cup may not be high enough after the water is dispensed, resulting in the beverage not being properly brewed. Utility Model Content
[0004] The purpose of this invention is to provide a precise temperature-controlled water purifier with a circulating water circuit, in order to extract hot water with an accurate temperature displayed on the screen from the instant hot water purifier and eliminate the influence of residual cold water in the heating pipe on the water temperature.
[0005] The technical solution adopted to solve the above problems is:
[0006] A precision temperature-controlled water purifier with a circulating water path includes a raw water tank, a drain valve seat, a booster pump, an RO filter assembly, a purified water tank, a water intake diaphragm pump, a heater with controllable heating temperature, a hot water switching valve for transferring cold water remaining in the heating element, and a water outlet connector.
[0007] The RO filtration assembly receives raw water that is pressurized and pumped into the raw water tank by a booster pump.
[0008] The purified water tank is connected to an RO filter assembly via pipeline, where a booster pump pressurizes and filters the water to produce purified water. The purified water in the tank is then pressurized by a diaphragm pump and pumped into a heater, where it is heated to the temperature displayed on the screen, allowing the user to easily retrieve hot water at the set temperature.
[0009] The heater is directly connected to the heating pipe via the water outlet connector, and a hot water switching valve is installed in the middle of the heating pipe.
[0010] The hot water switching valve is equipped with a water inlet, and a normally open water intake port and a normally closed return port that can be opened either way. The water inlet port is connected to the heater, the normally open water intake port is connected to the water outlet connector, and the normally closed return port is connected to the drain valve seat through the return pipe.
[0011] Furthermore, the drain valve seat is in a sealed connection with the raw water tank and is provided with an outlet and a return port. The outlet is equipped with a check valve that allows outward flow, and the return port is equipped with a check valve that allows inward flow.
[0012] Furthermore, an NTC temperature sensor is installed between the heating element and the hot water switching valve to monitor the water temperature flowing from the heating element to the outlet.
[0013] Furthermore, when the normally open water inlet is open and the normally closed return outlet is closed, hot water at the set temperature flows out from the water outlet.
[0014] Furthermore, when the normally open water inlet is closed and the normally closed return outlet is open, there is no water flow at the water outlet, and water that has not reached the set temperature flows into the raw water tank.
[0015] The beneficial effects of this utility model are:
[0016] This water purifier with a circulating water circuit and precise temperature control uses a hot water switching valve at the outlet of the heating element to pre-drain the initial cold water during water intake, ensuring that the water flowing through the outlet reaches the set temperature before reaching the user's cup. The initial cold water is pre-drained into the raw water tank to prevent it from being discharged from the water intake or drain outlet, thus avoiding water waste. When the user wants to drink room temperature water, they only need to keep the heater off and the normally closed return port closed, and the water flowing out of the outlet will be room temperature water, achieving free access to water. Attached Figure Description
[0017] Figure 1 This is a three-dimensional view of a precision temperature-controlled water purifier with a circulating water circuit, as an example.
[0018] Figure 2 This is a top-right view of a precision temperature-controlled water purifier with a circulating water path, as an example.
[0019] Figure 3 This is a top-left view of a precision temperature-controlled water purifier with a circulating water path, as an example.
[0020] Among them, 1-clean water tank, 2-hot water switching valve, 3-outlet water interface, 4-heater, 5-heater inlet pipe, 6-clean water tank outlet pipe, 7-drain valve seat, 8-water intake diaphragm pump, 9-return pipe, 10-raw water tank, 11-RO filter assembly, 12-filter assembly installation slot. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and by way of embodiments.
[0022] Please see Figures 1 to 2 This embodiment proposes a precision temperature-controlled water purifier with a circulating water path, including a raw water tank 10, a drain valve seat 7 connected to the raw water tank 10 by a sealing ring, a booster pump (not shown in the figure) for high-pressure pumping of raw water, an RO filter assembly 11 for filtering the raw water, a purified water tank 1 for receiving filtered pure water, a water intake diaphragm pump 8, a heater 4 with controllable heating temperature, a hot water switching valve 2 for transferring cold water remaining in the heating tube, and a water outlet connector for convenient water connection by the user.
[0023] As a necessary explanation, the RO filter assembly 11 cooperates with the cylindrical positioning groove set in the water purifier frame. After the raw water is pressurized and pumped into the raw water tank 10 by the booster pump, the raw water is filtered through the internal RO filter membrane. This is a known prior art solution.
[0024] The purified water tank 1 is connected to the RO filter assembly 11 via pipelines. The purified water is pressurized and filtered by a booster pump and flows into the purified water tank 1. The purified water in the tank 1 is then pressurized by a diaphragm pump 8 and pumped into a heater 4, where it is heated to the temperature shown on the display screen, allowing the user to retrieve hot water at the set temperature. It is particularly noteworthy that the temperature displayed on the screen is parameterized and correlated with the temperature sensed by the NTC temperature sensor.
[0025] As a further implementation process, the heater 4 is directly connected to the heating pipe and the water outlet connector. A hot water switching valve 2 is installed in the middle of the heating pipe and is close to the water outlet 3. The effect is that almost no cold water is left in the water outlet 3.
[0026] A particularly important implementation is that the hot water switching valve 2 is equipped with a water inlet, and a normally open water intake port and a normally closed return port that can be opened alternately, i.e., the normally open water intake port and the normally closed return port must be one open and the other closed. The water inlet port is connected to the heater 4, the normally open water intake port is connected to the water outlet connector, and the normally closed return port is connected to the drain valve seat 7 through the return pipe 9.
[0027] It should be noted that the drain valve seat 7 is in a sealed connection with the raw water tank 10, and is equipped with an outlet and a return port for the raw water inside the raw water tank 10. The outlet is equipped with a check valve that allows outflow only, and the return port is equipped with a check valve that allows inflow only. This ensures that the raw water only flows out and not in, and that the cold water in the heating pipe only flows in and not out.
[0028] A further implementation scheme is that an NTC temperature sensor is also provided between the heating pipe and the hot water switching valve 2 to monitor the water temperature flowing from the heating pipe to the water outlet 3.
[0029] The working process is as follows: when the normally open water inlet is open and the normally closed return port is closed, hot water at the set temperature flows out of the water outlet 3; when the normally open water inlet is closed and the normally closed return port is open, no water flows out of the water outlet 3, and water that has not reached the set temperature flows into the raw water tank.
[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes, modifications, substitutions and variations can be made without departing from the spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A precision temperature-controlled water purifier with a circulating water path, comprising a raw water tank, a drain valve seat, a booster pump, an RO filter assembly, a purified water tank, a water intake diaphragm pump, a heater with controllable heating temperature, a hot water switching valve for transferring cold water retained in the heating pipe, and a water outlet connector, characterized in that: The heater is directly connected to the heating pipe via the water outlet connector, and a hot water switching valve is installed in the middle of the heating pipe. The hot water switching valve is equipped with a water inlet, and a normally open water intake port and a normally closed return port that can be opened either way. The water inlet port is connected to the heater, the normally open water intake port is connected to the water outlet connector, and the normally closed return port is connected to the drain valve seat through the return pipe.
2. The water purifier with a circulating water circuit and precise temperature control according to claim 1, characterized in that: The RO filter assembly receives raw water from the raw water tank via a booster pump. The purified water tank is connected to the RO filter assembly via a pipeline, and receives purified water from the booster pump. The purified water in the purified water tank is then pumped into the heater by a water intake diaphragm pump, and heated to the temperature shown on the screen.
3. The precision temperature-controlled water purifier with a circulating water path according to claim 1, characterized in that: The drain valve seat is in a sealed connection with the raw water tank and is equipped with an outlet and a return port. The outlet is equipped with a check valve that allows outward flow, and the return port is equipped with a check valve that allows inward flow.
4. The water purifier with precise temperature control and a circulating water path according to claim 1, characterized in that: An NTC temperature sensor is also installed between the heating element and the hot water switching valve.
5. The precision temperature-controlled water purifier with a circulating water path according to claim 1, characterized in that: When the normally open water inlet is open and the normally closed return outlet is closed, hot water at the set temperature flows out of the water outlet; when the normally open water inlet is closed and the normally closed return outlet is open, no water flows out of the water outlet, and water that has not reached the set temperature flows into the raw water tank.