Water purifier

Abstract

The utility model discloses a water purifier which comprises a heat preservation water tank, a temperature sensor, a heating assembly, a reverse osmosis membrane element, a comparator and a controller, the temperature sensor is arranged in the heat preservation water tank, the reverse osmosis membrane element is connected with a water outlet of the heat preservation water tank, the temperature sensor is connected with the first input end of the comparator, and the second input end of the comparator is used for being connected with an electric signal representing a temperature threshold value. The controller is electrically connected with the output end of the comparator and the heating assembly; the heating assembly is used for heating raw water, the temperature sensor is used for detecting the water temperature and sending the water temperature to the comparator, the controller is used for sending a stop instruction to the heating assembly, the reverse osmosis membrane element filters the raw water, accurate detection of the water temperature in the water tank is achieved, and heating or cooling is conducted. It is ensured that the water temperature is within the normal working interval of the reverse osmosis membrane element, the reverse osmosis membrane element is prevented from losing efficacy, and normal operation of the water purifier is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and in particular to a water purifier. Background Art

[0002] Reverse osmosis membrane is a high-precision filter membrane, and its filter pore size is generally at the level of 0.0001 micron. The application range of reverse osmosis technology is very wide, including seawater desalination, drinking water purification, industrial water treatment and other fields. Due to the special structure of the reverse osmosis membrane, its operating temperature has certain restrictions. The operating temperature of the reverse osmosis membrane generally does not exceed 45°C. Exceeding this temperature will have an adverse effect on the performance and life of the reverse osmosis membrane. Therefore, in practical applications, it is necessary to strictly control the temperature of the reverse osmosis membrane to avoid damage to the membrane due to excessively high temperatures. Different types of reverse osmosis membranes have different operating temperature requirements. Generally speaking, the operating temperature of spiral membranes and flat membranes should be controlled below 40°C, while the operating temperature of hollow fiber membranes can generally reach above 45°C. In addition, some new reverse osmosis membranes, such as nanoporous material membranes, multilayer composite membranes, etc., have higher temperature resistance and a wider temperature range, and can be operated at higher temperatures. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a water purifier in order to overcome the defect in the prior art that the temperature of the water in the water tank of the water purifier cannot be accurately detected, which causes the reverse osmosis membrane element in the water purifier to fail.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a water purifier, comprising: an insulated water tank, a temperature sensor, a heating component, a reverse osmosis membrane element, a comparator and a controller; the insulated water tank is provided with the temperature sensor, the reverse osmosis membrane element is connected to the water outlet of the insulated water tank, the temperature sensor is connected to the first input end of the comparator, the second input end of the comparator is used to connect an electrical signal representing a temperature threshold, and the controller is electrically connected to the output end of the comparator and the heating component;

[0006] The insulated water tank is used to store raw water, the heating component is used to heat the raw water in the insulated water tank, the temperature sensor is used to detect the water temperature in the insulated water tank and send the water temperature to the comparator, the controller is used to send a stop command to the heating component, and the reverse osmosis membrane element filters the raw water in the insulated water tank.

[0007] Optionally, the heating component comprises:

[0008] An air-energy heat pump and a coil heat exchanger disposed in the thermal insulation water tank, the air-energy heat pump being connected to the coil heat exchanger, the air-energy heat pump being electrically connected to the controller, and the air-energy heat pump being used to generate heat by using air energy and input into the coil heat exchanger;

[0009] And / or, an electric heater is disposed in the thermal insulation water tank, and the electric heater is electrically connected to the controller.

[0010] Optionally, the water purifier further includes: a circulation pump, wherein the circulation pump is respectively connected to the air energy heat pump and the coil heat exchanger.

[0011] Optionally, the water purifier further comprises: a float valve, wherein the float valve is located at the water inlet of the thermal insulation water tank.

[0012] Optionally, the water purifier further includes: a water outlet pump; the water outlet pump is located between the water outlet of the insulated water tank and the reverse osmosis membrane element.

[0013] Optionally, the water purifier further includes: a water outlet valve, the water outlet valve is located between the water outlet of the thermal insulation water tank and the water outlet pump, and the water outlet valve is electrically connected to the controller.

[0014] Optionally, the water purifier further includes: a cooling device, which is disposed inside the insulated water tank, the cooling device is electrically connected to the controller, and the cooling device is used to reduce the temperature of raw water in the insulated water tank.

[0015] Optionally, the water purifier further comprises: a pressure barrel, which is connected to the reverse osmosis membrane element and is used to balance the water pressure in the pipeline.

[0016] Optionally, the water purifier further includes: a liquid level probe, which is arranged inside the insulated water tank and is used to detect the water level in the insulated water tank.

[0017] Optionally, the water purifier further includes: a display, which is arranged outside the insulated water tank, electrically connected to the temperature sensor, and displays the water temperature in the tank in real time.

[0018] The positive progressive effect of the present invention is that the present invention can heat or cool the water temperature by accurately detecting the water temperature in the insulated water tank, thereby ensuring that the water temperature is within the normal operating range of the reverse osmosis membrane element, preventing the reverse osmosis membrane element from failing, and ensuring the normal operation of the water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a structural diagram of a water purifier provided by an exemplary embodiment of the present invention.

[0020] Figure 2The present invention provides an operating flow chart of a water purifier according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0022] Figure 1 A structural diagram of a water purifier provided for an exemplary embodiment of the utility model includes: an insulated water tank 1, a temperature sensor 2, a heating component, a reverse osmosis membrane element 3, a comparator 4 and a controller 5; the insulated water tank 1 is provided with a temperature sensor 2, the reverse osmosis membrane element 3 is connected to the water outlet of the insulated water tank 1, the temperature sensor 2 is connected to a first input end of the comparator 4, the second input end of the comparator 4 is used to connect an electrical signal representing a temperature threshold, and the controller 5 is electrically connected to an output end of the comparator 4 and the heating component;

[0023] The insulated water tank 1 is used to store raw water, the heating component is used to heat the raw water in the insulated water tank 1, the temperature sensor 2 is used to detect the water temperature in the insulated water tank 1 and send the water temperature to the comparator 4, the controller 5 is used to send a stop command to the heating component, and the reverse osmosis membrane element 3 filters the raw water in the insulated water tank 1.

[0024] In this embodiment, a temperature sensor 2 is provided in the insulated water tank 1. The temperature sensor 2 can be arranged on the inner wall of the insulated water tank 1. The specific position is determined according to the design requirements, and can also be replaced by other devices with temperature detection function; the heating component includes an air energy heat pump 6 and a coil heat exchanger 7. The coil heat exchanger 7 is arranged inside the insulated water tank 1. The air energy heat pump 6 works according to the reverse Carnot cycle principle, and the heat in the air is transported to the water through the refrigerant, thereby heating the water. The reverse osmosis membrane element 3 is arranged outside the insulated water tank 1 and is connected to the insulated water tank 1. The raw water heated by the insulated water tank 1 is filtered by the reverse osmosis membrane element. The reverse osmosis membrane element 3 itself has an upper limit temperature for use. For example, the optimal working temperature is 25 degrees Celsius. When the water temperature exceeds 30 degrees Celsius, the reverse osmosis membrane element 3 will fail and cannot continue to filter. The working temperatures of different reverse osmosis membrane elements are also different. A comparator 4 is also provided in the insulated water tank 1. The comparator 4 can be set in the insulated water tank 1 or installed in other positions of the water purifier as needed. There can be one or more comparators. A preset water temperature threshold is set in the comparator. This preset water temperature threshold is determined according to the upper limit temperature that the reverse osmosis membrane element can withstand. The comparator 4 compares the water temperature detected by the temperature sensor 2 with the preset water temperature threshold, and sends the comparison result to the controller 5. The controller 5 sends a corresponding instruction to the heating component to control whether to heat according to the water temperature. The controller 5 can be set in the insulated water tank 1 or installed in other positions of the water purifier as needed. There can be one or more comparators.

[0025] This embodiment heats the water by accurately detecting the water temperature in the insulated water tank, ensuring that the water temperature is within the normal operating range of the reverse osmosis membrane element, preventing the reverse osmosis membrane element from failing, and ensuring the normal operation of the water purifier.

[0026] In one embodiment, the heating assembly comprises:

[0027] The air energy heat pump 6 and the coil heat exchanger 7 arranged in the heat preservation water tank, the air energy heat pump 6 is connected to the coil heat exchanger 7, the air energy heat pump 6 is electrically connected to the controller 5, and the air energy heat pump 6 is used to generate heat by using air energy and input the heat into the coil heat exchanger 7;

[0028] And / or, the electric heater 8 is disposed in the thermal insulation water tank 1 , and the electric heater 8 is electrically connected to the controller 5 .

[0029] In this embodiment, the air energy heat pump 6 is connected to the coil heat exchanger 7. The air energy heat pump 6 collects heat in the air and transports it to the insulated water tank 1 through the coil heat exchanger 7. The switches of the air energy heat pump 6 and the coil heat exchanger 7 are controlled by the controller 5. When an emergency occurs and the temperature of the water in the insulated water tank 1 needs to be increased, the water is quickly heated by the electric heater 8, which is also arranged in the insulated water tank 1.

[0030] In this embodiment, the controller 5 controls the air energy heat pump 6 and the coil heat exchanger 7 to collect energy in the air and transmit it to the insulated water tank 1 to heat the water. This is safe and environmentally friendly, does not generate any exhaust gas, has low energy consumption, and saves electricity costs.

[0031] In one embodiment, the water purifier further includes: a circulation pump 9, which is connected to the air energy heat pump 6 and the coil heat exchanger 7 respectively.

[0032] In this embodiment, a circulation pump 9 is provided, which is installed on the pipeline between the air energy heat pump 6 and the coil heat exchanger 7. The circulation pump 9 is used to overcome the pressure in the pipeline and realize the circulation of the refrigerant in the pipeline, so that the entire heating process can be carried out continuously.

[0033] This embodiment overcomes the pressure in the pipeline and the heating system by setting a circulation pump 9 between the air energy heat pump 6 and the coil heat exchanger 7, so that the refrigerant in the pipeline can be circulated and the entire heating process can be carried out continuously.

[0034] In one embodiment, the water purifier further includes: a float valve 10 , and the float valve 10 is located at the water inlet of the thermal insulation water tank 1 .

[0035] In this embodiment, the float valve is arranged in the insulated water tank 1 and is located at the water inlet of the insulated water tank 1. The raw water entering the insulated water tank 1 is controlled by controlling the liquid level. When the liquid level in the insulated water tank 1 rises to a preset value, it means that there is no need to continue to inject raw water into the insulated water tank 1. At this time, the float valve automatically closes the water inlet pipeline; when the liquid level in the insulated water tank 1 drops to a preset value, it means that raw water needs to be injected into the insulated water tank 1. The float valve automatically opens the water inlet pipeline.

[0036] In this embodiment, a float valve is provided to automatically control the water inlet pipeline according to the liquid level in the thermal insulation water tank 1, thereby realizing the function of automatically controlling the water level.

[0037] In one embodiment, the water purifier further includes: a water outlet pump 11 ; the water outlet pump 11 is located between the water outlet of the insulated water tank 1 and the reverse osmosis membrane element 3 .

[0038] In this embodiment, a water outlet pump 11 is provided between the water outlet of the insulated water tank 1 and the reverse osmosis membrane element 3 , thereby increasing the pressure of the pipeline between the insulated water tank 1 and the reverse osmosis membrane element 3 .

[0039] In this embodiment, a water outlet pump 11 is arranged between the water outlet of the insulated water tank 1 and the reverse osmosis membrane element 3, thereby increasing the water pressure in the pipeline, so that the insulated water tank 1 can successfully deliver water to the reverse osmosis membrane element 3 for filtration.

[0040] In one embodiment, the water purifier further includes: a water outlet valve 12 , the water outlet valve 12 is located between the water outlet of the insulated water tank 1 and the water outlet pump 11 , and the water outlet valve 12 is electrically connected to the controller 5 .

[0041] The water outlet valve 12 here is controlled by the controller 5. When filtering is required, the controller 5 sends an opening valve signal to the water outlet valve 12, and the water outlet valve 12 opens; when filtering is not required, the controller 5 sends a closing valve signal to the water outlet valve 12, and the water outlet valve 12 closes.

[0042] In this embodiment, a water outlet valve 12 is provided and controlled by a controller 5, thereby controlling the on-off of the water flow in the pipeline.

[0043] In one embodiment, the water purifier further includes: a cooling device, which is arranged inside the insulated water tank, and the cooling device is electrically connected to the controller 5, and the cooling device is used to reduce the temperature of the raw water in the insulated water tank.

[0044] In this embodiment, when the water temperature in the insulated water tank 1 is too high due to air temperature or other reasons, the controller 5 can control the cooling device in the water tank to cool down, thereby quickly reducing the water temperature so that the water temperature is within the normal operating temperature range of the reverse osmosis membrane element 3, and the filtration process can proceed normally.

[0045] In this embodiment, a cooling device is arranged in the water tank to cool down the excessively high water temperature, thereby ensuring that the reverse osmosis membrane element 3 works under normal water temperature and filters the water in time.

[0046] In one embodiment, the water purifier further includes: a pressure tank 13, which is connected to the reverse osmosis membrane element 3 and is used to balance the water pressure in the pipeline.

[0047] In this embodiment, the pressure barrel 13 controls the inflow and outflow of water based on the pressure changes of the airbag inside it; the filtered clean water will be stored in the pressure barrel 13 by squeezing the airbag of the pressure barrel 13. When the valve is opened, the rebound force of the airbag will discharge the water and flow to the valve and the water outlet.

[0048] In this embodiment, a pressure tank 13 is provided to store clean water to maintain a stable water pressure, thereby reducing the number of starts and stops of the water pump and extending the life of the water pump.

[0049] In one embodiment, the water purifier further includes: a liquid level probe 14 , which is disposed inside the insulated water tank 1 and is used to detect the water level in the insulated water tank 1 .

[0050] The liquid level probe 14 in this embodiment is installed inside the insulated water tank 1. The liquid level probe 14 can be one or more, and detects different water levels respectively. The liquid level probe 14 detects the water level in the insulated water tank 1 and sends the water level signal to the controller 5. The controller 5 sends corresponding switch instructions to the valve and the water pump according to the received water level signal. For example, when the water level in the insulated water tank 1 reaches a higher water level, filtering can be performed, and the controller 5 sends an opening instruction to the outlet pump 11 and the outlet valve 12, and the raw water in the insulated water tank 1 flows to the filter element.

[0051] In this embodiment, the liquid level probe 14 detects the water level and sends the detection signal to the controller 5, thereby realizing the filtering process controlled according to the water level.

[0052] In one embodiment, the water purifier further includes: a display, which is arranged outside the insulated water tank, electrically connected to the temperature sensor, and displays the water temperature in the tank in real time.

[0053] In this embodiment, the display can also be installed on the water purifier housing to display the temperature in real time when the water temperature is abnormal, making it convenient for users and maintenance personnel to determine the cause of the fault.

[0054] The water purifier of this embodiment includes other filtering components in addition to the reverse osmosis membrane element, namely a 5-micron PP cotton filter element 15, a granular activated carbon filter element 16, a 1-micron PP cotton filter element 17, and a post-activated carbon filter element 19; the 5-micron PP cotton filter element 15 can filter out impurities larger than 5 microns, and the 1-micron PP cotton filter element 17 can filter out impurities larger than 1 micron; the granular activated carbon filter element 16 and the post-activated carbon filter element 19 both function to adsorb impurities in water.

[0055] The water purifier of this embodiment also includes an insulated water tank 20, a liquid level probe 21, a temperature sensor 22, an air energy heat pump 23, a coil heat exchanger 24, a circulation pump 25 and an electric heater 26; the insulated water tank 20 is connected to the reverse osmosis element 3 to receive and store filtered clean water, the liquid level probe 21 is installed inside the insulated water tank 20, and the liquid level probe 21 can be one or more, respectively detecting different water levels; the temperature sensor 22, the air energy heat pump 23, the coil heat exchanger 24, and the circulation pump 25 are electrically connected to the controller 5 and the comparator 4 respectively, and the temperature sensor 22 sends the comparison result to the controller The controller 5 sends corresponding instructions to control whether to heat the water according to the water temperature. The air energy heat pump 23 is connected to the coil heat exchanger 24. The circulation pump 25 is arranged between the pipes of the two to overcome the pressure in the pipes and realize circulation; the air energy heat pump 23 collects heat in the air and transports it to the insulated water tank 20 through the coil heat exchanger 24; the water is quickly heated by the electric heater 26, and the electric heater 26 is also arranged in the insulated water tank 20. Since the insulated water tank 20 needs to heat the clean water to a higher temperature, the main heating is still through the electric heater 26, and the air energy heat pump 23 plays a role of auxiliary heating.

[0056] This embodiment further provides an insulated water tank 20, a liquid level probe 21, a temperature sensor 22, an air energy heat pump 23, a coil heat exchanger 24, a circulation pump 25 and an electric heater 26, and mainly utilizes the heating functions of the air energy heat pump 23 and the electric heater to achieve the heating of the purified water.

[0057] The water purifier in this embodiment also includes a hot water solenoid valve 27, an emptying solenoid valve 28, a normal temperature water solenoid valve 29, a water supply solenoid valve 30, a waste water solenoid valve 33, a one-way valve 31, a one-way valve 34, a one-way valve 35 and a high-pressure switch 18; the hot water solenoid valve 27 is connected to the insulation water tank 20 and the hot water outlet. When the user needs hot water, the hot water solenoid valve 27 is opened, and the hot water flows from the insulation water tank 20 to the hot water outlet. The emptying solenoid valve 28 is connected to the insulation water tank 20. The water tank 20 is connected to the drain port. When the user needs to drain the water in the insulated water tank 20, the drain solenoid valve 28 is opened, and the water in the water tank flows out through the drain port; the normal temperature water solenoid valve 29 is connected to the post-activated carbon filter 19 and the normal temperature water outlet. When the user needs normal temperature water, the normal temperature water solenoid valve 29 is opened, and the clean water filtered by the post-activated carbon filter 19 flows out from the normal temperature water outlet; the water replenishment solenoid valve 30 is set between the insulated water tank 20 and the post-activated carbon filter On the pipeline between the core 19, when the clean water in the insulated water tank 20 is insufficient, the water replenishment solenoid valve 30 is opened to replenish the clean water in the insulated water tank 20; the wastewater solenoid valve 33 is connected to the reverse osmosis membrane element 3 and the wastewater outlet. During the filtration process, the wastewater solenoid valve 33 is opened, and the filtered wastewater flows out from the wastewater outlet; a one-way valve 31 is also provided on the pipeline between the water replenishment solenoid valve 30 and the insulated water tank 20, and a one-way valve 34 is also provided on the pipeline between the wastewater outlet and the wastewater solenoid valve, and a one-way valve 35 is also provided between the reverse osmosis membrane element 3 and the post-activated carbon filter element 19, so that the fluid is not allowed to pass in the reverse direction, ensuring that the clean water flows according to the prescribed pipeline; the high-pressure switch 18 is arranged between the reverse osmosis membrane element 3 and the post-activated carbon filter element 19, and is mainly responsible for controlling the start, operation and stop of the water purifier, and monitoring the pressure fluctuation during the operation of the water purifier. When the pressure in the pipeline is abnormal, the high-pressure switch cuts off the power supply in time to ensure safety.

[0058] This embodiment is provided with a solenoid valve, a one-way valve and a high-pressure switch, which play a good control role in the operation of the pipeline and ensure the normal operation of the water purifier.

[0059] In one embodiment, the water purifier further includes a UV sterilizer, which is located between the post-activated carbon filter element 19 and the normal temperature water outlet, and is used to kill microorganisms not filtered out by the filter element and purify the water quality.

[0060] Figure 2An operation flow chart of a water purifier provided as an exemplary embodiment of the utility model, when the water purifier starts to operate, it is first necessary to detect the temperature in the insulated water tank 1, for example, the preset temperature is 25℃±5℃, that is, only when the system meets this premise can the following logic be executed. When the system detects that the temperature in the insulated water tank 1 is lower than the system preset temperature, it starts heating, and when the temperature in the water tank reaches 25℃±5℃, it stops heating; when the water purifier is started, it is powered on for flushing, and the outlet pump 11, outlet valve 12 and waste water solenoid valve 33 are all turned on, and the duration is set according to the size of the reverse osmosis membrane filter element, and the default is 15 minutes; after the power-on flushing is completed, the water production and flushing continues, and the outlet pump 11 and outlet valve 12 are both turned on, and the water purifier starts to produce water until the high-pressure switch 18 detects the pressure and stops, at which time the normal temperature water solenoid valve 29 is turned on, and the start time is related to the size of the pressure barrel 13, and the system defaults to 15 minutes, so that all the clean water in the pressure barrel 13 can be emptied, and this process is performed 3 times; Then continue to clean the whole machine, the water outlet pump 11, the water outlet valve 12 and the water supply solenoid valve are all opened until the liquid level probe 21 in the insulated water tank 20 detects the corresponding water level, the water outlet pump 11, the water outlet valve 12 and the water supply solenoid valve are all closed, and the emptying solenoid valve 28 is opened at this time, and the opening time is determined according to the size of the insulated water tank 20; after the whole machine is cleaned, the water production and heating process is carried out. For example, when the liquid level probe in the insulated water tank 20 detects a low water level, the electric heater 26 and the air energy heat pump 23 are turned on at the same time, and the water supply solenoid valve 30 is closed. At this time, if the high-pressure switch 18 in the filtration system does not detect high pressure, then the filtration system will continue to produce water until the high-pressure switch 18 detects high pressure and stops producing water. When the temperature sensor 22 detects that the temperature in the insulated water tank 20 is equal to the system preset temperature, the electric heater 26 and the air energy heat pump 23 stop working. At the same time, the water replenishment solenoid valve 30 is opened, and the medium purified water of the filtration system will continue to replenish the insulated water tank 20. If the system detects the low pressure value of the high pressure switch 18 at this time, the filtration system will enter the water production mode. If the filtration system is in the water production mode at this time, it will continue to produce water until the high pressure value of the high pressure switch 18 is detected and the water production is stopped. When the water replenishment solenoid valve 30 is opened, if the temperature sensor 22 detects that the temperature is lower than the system preset temperature, if it is 85°C at this time, then the electric heater 26 and the air energy heat pump 23 will be turned on at the same time to heat the purified water in the insulated water tank until the temperature sensor 22 detects that the temperature is the system preset temperature, that is, 95°C, the electric heater 26 and the air energy heat pump 23 will stop working, and the water replenishment will stop when the liquid level probe in the insulated water tank 20 detects the medium water level. When the water level in the insulated water tank 20 reaches the middle water level and the water temperature reaches the system preset temperature, the water replenishment solenoid valve 30 continues to open and continues to replenish water into the insulated water tank 20. At this time, if the temperature sensor 22 detects that the temperature is lower than the system preset temperature, the electric heater 26 and the air energy heat pump 23 are turned on at the same time.When the liquid level probe in the insulated water tank 20 detects a high water level, water replenishment is stopped, and when the temperature sensor 22 detects that the temperature is the system preset temperature, heating is stopped. At this time, if the filtration system detects that the high-pressure switch 18 is at a low pressure value, the system will enter the water-making mode; after the water making and heating are completed, the user can take water, and when the temperature sensor 22 detects that the temperature is greater than 85°C and the user takes water, the hot water solenoid valve 27 is opened, and the hot water can be released; when the user takes normal temperature water, the normal temperature water solenoid valve 29 and the UV sterilizer 32 are opened, and the system detects the pressure value of the high-pressure switch in real time. When the high-pressure switch 18 detects a low pressure value, the system enters the water-making mode; when the purified water in the insulated water tank 20 reaches a high water level, and the system detects that the time is from 0:00 to 5:00 in the morning, it enters the insulation mode. At this time, if the temperature sensor 22 detects that the water temperature of the insulation water tank 20 is lower than the system preset temperature, which is defined as 85°C here, the air energy heat pump 23 will be started, and the electric heater 26 will not be started. At this time, only the air energy heat pump 23 is used to heat the purified water in the insulation water tank 20 until the temperature sensor 22 detects that the temperature is the system preset temperature and stops working, and the cycle is carried out. The insulation mode works from 0:00 to 5:00 in the morning.

[0061] This embodiment implements control over the water purification, heating and heat preservation processes of the water purifier through the control logic of the water purifier operation, thereby ensuring the normal operation of the water purifier.

[0062] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A water purifier, characterized in that: include: Insulated water tank, temperature sensor, heating assembly, reverse osmosis membrane element, comparator and controller; The temperature sensor is arranged in the thermal insulation water tank, the reverse osmosis membrane element is connected to the water outlet of the thermal insulation water tank, the temperature sensor is connected to the first input end of the comparator, the second input end of the comparator is used to connect the electrical signal representing the temperature threshold, and the controller is electrically connected to the output end of the comparator and the heating assembly; The insulated water tank is used to store raw water, the heating component is used to heat the raw water in the insulated water tank, the temperature sensor is used to detect the water temperature in the insulated water tank and send the water temperature to the comparator, the controller is used to send a stop command to the heating component, and the reverse osmosis membrane element filters the raw water in the insulated water tank.

2. The water purifier according to claim 1, characterized in that: The heating assembly comprises: An air-energy heat pump and a coil heat exchanger disposed in the thermal insulation water tank, the air-energy heat pump being connected to the coil heat exchanger, the air-energy heat pump being electrically connected to the controller, and the air-energy heat pump being used to generate heat by using air energy and input into the coil heat exchanger; And / or, an electric heater is disposed in the thermal insulation water tank, and the electric heater is electrically connected to the controller.

3. The water purifier according to claim 2, characterized in that: The water purifier further comprises: a circulation pump, wherein the circulation pump is respectively connected to the air energy heat pump and the coil heat exchanger.

4. The water purifier according to claim 1, characterized in that: The water purifier further comprises: a float valve, and the float valve is located at the water inlet of the thermal insulation water tank.

5. The water purifier according to claim 1, characterized in that: The water purifier further comprises: a water outlet pump; the water outlet pump is located between the water outlet of the thermal insulation water tank and the reverse osmosis membrane element.

6. The water purifier according to claim 5, characterized in that: The water purifier further includes: a water outlet valve, which is located between the water outlet of the thermal insulation water tank and the water outlet pump, and is electrically connected to the controller.

7. The water purifier according to claim 1, characterized in that: The water purifier further includes: a cooling device, which is arranged inside the thermal insulation water tank, the cooling device is electrically connected to the controller, and the cooling device is used to reduce the temperature of raw water in the thermal insulation water tank.

8. The water purifier according to claim 1, characterized in that: The water purifier further comprises: a pressure barrel, which is connected to the reverse osmosis membrane element and is used to balance the water pressure in the pipeline.

9. The water purifier according to claim 1, characterized in that: The water purifier further comprises: a liquid level probe, which is arranged inside the thermal insulation water tank and is used to detect the water level in the thermal insulation water tank.

10. The water purifier according to claim 1, characterized in that: The water purifier also includes: a display, which is arranged outside the thermal insulation water tank and is electrically connected to the temperature sensor to display the water temperature in the tank in real time.

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