Cold water backflow waterway system and water purifier thereof

Abstract

The utility model discloses a cold water backflow waterway system and a water purifier thereof, the cold water backflow waterway system comprises a filtering waterway module and a heating waterway module, the heating waterway module comprises a negative pressure valve, a water suction pump, a heating body, a water outlet electromagnetic valve and a backflow electromagnetic valve, and a water inlet of the negative pressure valve is connected with a water outlet of the filtering waterway module; the negative pressure valve, the water suction pump and the heating body are sequentially connected, a water inlet of the water outlet electromagnetic valve is connected to a water outlet of the heating body, a water inlet of the backflow electromagnetic valve is connected to the water outlet of the heating body, and a water outlet of the backflow electromagnetic valve is connected to a water inlet of the water suction pump. The water suction pump is used for pumping water at the negative pressure valve to the heating body for heating, cold water which is not heated to the set temperature at the front end flows back to the heating body to be heated again in water discharged after the heating body is heated, and hot water which is heated to the set temperature at the rear end is discharged from the water outlet electromagnetic valve; therefore, when a user receives hot water, the first-section water is hot water meeting the use requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a cold water return waterway system and a water purifier thereof. Background Art

[0002] As people's living standards improve, they pay more and more attention to water quality and hygiene. In order to meet people's needs for drinking hot water at any time, water purifiers with filtering and heating functions have become indispensable household appliances in people's lives. However, when the existing water purifiers are in use, it takes a certain amount of time for the heat pipe to heat up, and the water pipes will absorb heat, resulting in a low temperature at the beginning of the water output by the water purifier. The temperature of the first cup of water received by the user is low, which cannot meet the user's demand for hot water. Utility Model Content

[0003] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a cold water return water system and a water purifier thereof, so as to solve the problem that when the existing water purifier is in use, it takes a certain amount of time for the heat pipe to heat up, and the water pipe will absorb heat, resulting in a low temperature of the front water output by the water purifier. The temperature of the first cup of water received by the user is low and cannot meet the user's demand for hot water.

[0004] The utility model is a technical solution adopted to solve the problem. In the first aspect, the utility model embodiment discloses a cold water return water circuit system, including a filtering water circuit module and a heating water circuit module, the heating water circuit module includes a negative pressure valve, a water pump, a heating body, a water outlet solenoid valve and a reflux solenoid valve, the water inlet of the negative pressure valve is connected to the water outlet of the filtering water circuit module, the negative pressure valve, the water pump and the heating body are connected in sequence, the water inlet of the water outlet solenoid valve is connected to the water outlet of the heating body, the water inlet of the reflux solenoid valve is connected to the water outlet of the heating body, and the water outlet of the reflux solenoid valve is connected to the water inlet of the water pump.

[0005] As an optional implementation, in an embodiment of the first aspect of the utility model, the heating body is a heating pipe, and the heating water circuit module also includes an inlet NTC and an outlet NTC, the inlet NTC is arranged at the water inlet of the heating pipe, and the outlet NTC is arranged at the water outlet of the heating pipe.

[0006] As an optional implementation, in an embodiment of the first aspect of the utility model, the filtration water circuit module includes a pre-filter element, a booster pump and a RO reverse osmosis filter element, the pre-filter element, the booster pump and the RO reverse osmosis filter element are connected in sequence, and the water inlet of the negative pressure valve is connected to the pure water outlet of the RO reverse osmosis filter element.

[0007] As an optional implementation, in an embodiment of the first aspect of the utility model, the filter water circuit module also includes a water inlet solenoid valve, the water inlet of the water inlet solenoid valve is connected to the water outlet of the pre-filter element, and the water outlet of the water inlet solenoid valve is connected to the water inlet of the boost pump.

[0008] As an optional implementation, in an embodiment of the first aspect of the utility model, the filtration water circuit module also includes a pressure relief valve, the water inlet of the pressure relief valve is connected to the pure water outlet of the RO reverse osmosis filter element, and the water outlet of the pressure relief valve is connected to the water inlet of the booster pump.

[0009] As an optional implementation, in an embodiment of the first aspect of the utility model, the filtration water circuit module also includes a wastewater solenoid valve, and the water inlet of the wastewater solenoid valve is connected to the wastewater outlet of the RO reverse osmosis filter element.

[0010] As an optional implementation, in an embodiment of the first aspect of the utility model, the filtration water channel module further includes a check valve, and the check valve is arranged at the water outlet of the RO reverse osmosis filter element.

[0011] As an optional implementation, in an embodiment of the first aspect of the utility model, the filtration water channel module also includes a flow meter, and the flow meter is arranged at the water outlet of the RO reverse osmosis filter element.

[0012] As an optional implementation, in an embodiment of the first aspect of the utility model, the cold water return water circuit system and its water purifier also include a cold water solenoid valve, and the water inlet of the cold water solenoid valve is connected to the water outlet of the filter water circuit module.

[0013] In a second aspect, an embodiment of the utility model discloses a water purifier, comprising a water purifier body and the cold water return waterway system as described above, wherein the cold water return waterway system is arranged on the water purifier body.

[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0015] The utility model is provided with a cold water return water system including a filtering water module and a heating water module. The heating water module includes a negative pressure valve, a water pump, a heating body, a water outlet solenoid valve and a return solenoid valve. The water inlet of the negative pressure valve is connected to the water outlet of the filtering water module. The negative pressure valve, the water pump and the heating body are connected in sequence. The water inlet of the water outlet solenoid valve is connected to the water outlet of the heating body. The water inlet of the return solenoid valve is connected to the water outlet of the heating body and the water outlet of the return solenoid valve is connected to the water inlet of the water pump. The water pump is used to pump water at the negative pressure valve to the heating body for heating. Among the water discharged from the heating body after heating, the cold water at the front end that has not been heated to the set temperature flows back to the heating body to be heated again, and the hot water at the rear end that has been heated to the set temperature is discharged from the water outlet solenoid valve. With this design, cold water that has not been heated to the set temperature at the front end of the heating body can be returned to the front of the heating body through the reflux solenoid valve, and the user can receive hot water heated to the set temperature at the back end, thereby ensuring that the first water when the user receives hot water is hot water that meets the usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a schematic structural diagram of the cold water return water system in an embodiment of the utility model.

[0018] The meanings of the reference numerals are as follows:

[0019] 10-filtration water circuit module; 11-pre-filter element; 12-boosting pump; 13-RO reverse osmosis filter element; 14-water inlet solenoid valve; 15-pressure relief valve; 16-wastewater solenoid valve; 17-check valve; 18-flow meter; 20-heating water circuit module; 21-negative pressure valve; 22-water pump; 23-heating body; 24-water outlet solenoid valve; 25-reflux solenoid valve; 26-water inlet NTC; 27-water outlet NTC; 28-cold water solenoid valve. DETAILED DESCRIPTION

[0020] 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.

[0021] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0025] The technical solution of the utility model will be further described below in conjunction with embodiments and drawings.

[0026] Example

[0027] See also Figure 1The embodiment of the utility model discloses a water purifier, which includes a water purifier body and a cold water return waterway system, and the cold water return waterway system is arranged on the water purifier body. The cold water return waterway system of this scheme includes a filtering waterway module 10 and a heating waterway module 20, and the heating waterway module 20 includes a negative pressure valve 21, a water pump 22, a heating body 23, a water outlet solenoid valve 24 and a reflux solenoid valve 25. The water inlet of the negative pressure valve 21 is connected to the water outlet of the filtering waterway module 10, the negative pressure valve 21, the water pump 22 and the heating body 23 are connected in sequence, the water inlet of the water outlet solenoid valve 24 is connected to the water outlet of the heating body 23, the water inlet of the reflux solenoid valve 25 is connected to the water outlet of the heating body 23, and the water outlet of the reflux solenoid valve 25 is connected to the water inlet of the water pump 22. The water pump 22 is used to pump the water at the negative pressure valve 21 to the heating body 23 for heating. Among the water discharged from the heating body 23 after heating, the cold water at the front end that has not been heated to the set temperature flows back to the heating body 23 to be heated again, and the hot water at the rear end that has been heated to the set temperature is discharged from the water outlet solenoid valve 24. With such a design, the cold water at the front end of the heating body 23 that has not been heated to the set temperature flows back to the front of the heating body 23 through the reflux solenoid valve 25, and the user can receive the hot water heated to the set temperature at the rear end, thereby ensuring that the first section of water when the user receives hot water is hot water that meets the use requirements.

[0028] Among them, the heating body 23 is a heating pipe. In order to be able to timely detect the water inlet temperature and water outlet temperature of the heating pipe, the heating water circuit module 20 also includes an inlet NTC 26 and an outlet NTC 27. The inlet NTC 26 is arranged at the water inlet of the heating pipe to detect the inlet water temperature, and the outlet NTC 27 is arranged at the water outlet of the heating pipe to detect the temperature of the hot water after heating.

[0029] Among them, the negative pressure valve 21 can retain the pressure of pure water in the filter water circuit module 10 at the water inlet of the negative pressure valve 21, and the water pressure at the water outlet of the negative pressure valve 21 is zero. When the user takes water, the water pump 22 is started to suck open the negative pressure valve 21, and the water circuit is opened and enters the instant heating pipe for heating.

[0030] In some embodiments, the filtration water circuit module 10 includes a pre-filter element 11, a booster pump 12, and a RO reverse osmosis filter element 13, which are sequentially arranged. The pre-filter element 11, the booster pump 12, and the RO reverse osmosis filter element 13 are sequentially connected, and the water inlet of the negative pressure valve 21 is connected to the pure water outlet of the RO reverse osmosis filter element 13. With such a design, the tap water entering the water purifier is first roughly filtered through the pre-filter element 11, and is pumped to the RO reverse osmosis filter element 13 under the action of the booster pump 12 for re-filtration, and finally the pure water that can be used for drinking by the user is discharged.

[0031] Furthermore, in order to control the water inflow of the filter water circuit module 10, the filter water circuit module 10 further includes a water inlet solenoid valve 14, the water inlet of the water inlet solenoid valve 14 is connected to the water outlet of the pre-filter element 11, and the water outlet of the water inlet solenoid valve 14 is connected to the water inlet of the booster pump 12. In this arrangement, when the user needs to drink water, the water inlet solenoid valve 14 is opened, and the booster pump 12 can pump water; when the user does not need to drink water, the water inlet solenoid valve 14 is closed, and the booster pump 12 cannot pump water.

[0032] In some embodiments, considering that there is a situation where the pure water filtered by the RO reverse osmosis filter element 13 is in excess of the user's demand, in order to prevent the pure water filtered by the RO reverse osmosis filter element 13 from accumulating at the outlet of the RO reverse osmosis filter element 13, the filtration waterway module 10 further includes a pressure relief valve 15, the water inlet of the pressure relief valve 15 is connected to the pure water outlet of the RO reverse osmosis filter element 13, and the water outlet of the pressure relief valve 15 is connected to the water inlet of the booster pump 12. With such a design, the pressure relief valve 15 can return the excess pure water discharged from the RO reverse osmosis filter element 13 when taking hot water to the inlet of the booster pump 12, so that the water can be pumped to the RO reverse osmosis filter element 13 for re-filtration when the user takes water next time.

[0033] In some embodiments, considering that the RO reverse osmosis filter element 13 may also generate wastewater, the filtration waterway module 10 further includes a wastewater solenoid valve 16, and the water inlet of the wastewater solenoid valve 16 is connected to the wastewater outlet of the RO reverse osmosis filter element 13. With such a design, the concentrated water generated by the RO reverse osmosis filter element 13 can be discharged through the wastewater solenoid valve 16.

[0034] In some embodiments, in order to prevent the pure water discharged from the RO reverse osmosis filter element 13 from flowing back during the water production process and affecting user use, the filtration water path module 10 also includes a check valve 17, which is arranged at the water outlet of the RO reverse osmosis filter element 13 to prevent the pure water discharged from the RO reverse osmosis filter element 13 from flowing back.

[0035] In some embodiments, in order to calculate and indicate the pure water flow rate of the water purifier, the filtration water channel module 10 further includes a flow meter 18 , which is disposed at the water outlet of the RO reverse osmosis filter element 13 and is used to calculate the outlet flow rate of pure water.

[0036] In some embodiments, the water purifier also has a cold water discharge function, and the cold water return water circuit system further includes a cold water solenoid valve 28, and the water inlet of the cold water solenoid valve 28 is connected to the water outlet of the filter water circuit module 10. With such a design, when the user needs to drink cold water, the cold water solenoid valve 28 directly discharges cold water.

[0037] The utility model provides a water purifier, which is provided with a cold water return water system including a filtering water path module 10 and a heating water path module 20. The heating water path module 20 includes a negative pressure valve 21, a water pump 22, a heating body 23, a water outlet solenoid valve 24 and a reflux solenoid valve 25. The water inlet of the negative pressure valve 21 is connected to the water outlet of the filtering water path module 10, the negative pressure valve 21, the water pump 22 and the heating body 23 are connected in sequence, the water inlet of the water outlet solenoid valve 24 is connected to the water outlet of the heating body 23, the water inlet of the reflux solenoid valve 25 is connected to the water outlet of the heating body 23, and the water outlet of the reflux solenoid valve 25 is connected to the water inlet of the water pump 22. The water pump 22 is used to pump the water at the negative pressure valve 21 to the heating body 23 for heating. Among the water discharged from the heating body 23 after heating, the cold water at the front end that has not been heated to the set temperature flows back to the heating body 23 to be heated again, and the hot water at the rear end that has been heated to the set temperature is discharged from the water outlet solenoid valve 24. With such a design, the cold water at the front end of the heating body 23 that has not been heated to the set temperature flows back to the front of the heating body 23 through the reflux solenoid valve 25, and the user can receive the hot water heated to the set temperature at the rear end, thereby ensuring that the first section of water when the user receives hot water is hot water that meets the use requirements.

[0038] The above is a detailed introduction to a cold water return waterway system and a water purifier disclosed in an embodiment of the present invention. This article uses individual examples to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the cold water return waterway system and the water purifier of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A cold water return waterway system, characterized in that: The invention comprises a filtering water circuit module (10) and a heating water circuit module (20), wherein the heating water circuit module (20) comprises a negative pressure valve (21), a water pump (22), a heating body (23), a water outlet solenoid valve (24) and a reflux solenoid valve (25), wherein the water inlet of the negative pressure valve (21) is connected to the water outlet of the filtering water circuit module (10), the negative pressure valve (21), the water pump (22) and the heating body (23) are connected in sequence, the water inlet of the water outlet solenoid valve (24) is connected to the water outlet of the heating body (23), the water inlet of the reflux solenoid valve (25) is connected to the water outlet of the heating body (23), and the water outlet of the reflux solenoid valve (25) is connected to the water inlet of the water pump (22).

2. The cold water return waterway system according to claim 1, characterized in that: The heating body (23) is a heating pipe, and the heating water circuit module (20) further comprises a water inlet NTC (26) and a water outlet NTC (27), wherein the water inlet NTC (26) is arranged at the water inlet of the heating pipe, and the water outlet NTC (27) is arranged at the water outlet of the heating pipe.

3. The cold water return waterway system according to claim 1, characterized in that: The filtration water circuit module (10) comprises a pre-filter element (11), a booster pump (12) and a RO reverse osmosis filter element (13); the pre-filter element (11), the booster pump (12) and the RO reverse osmosis filter element (13) are connected in sequence; and the water inlet of the negative pressure valve (21) is connected to the pure water outlet of the RO reverse osmosis filter element (13).

4. The cold water return waterway system according to claim 3, characterized in that: The filtering water circuit module (10) further comprises a water inlet solenoid valve (14), the water inlet of the water inlet solenoid valve (14) being connected to the water outlet of the pre-filter element (11), and the water outlet of the water inlet solenoid valve (14) being connected to the water inlet of the booster pump (12).

5. The cold water return waterway system according to claim 3, characterized in that: The filtration water channel module (10) further comprises a pressure relief valve (15), the water inlet of the pressure relief valve (15) being connected to the pure water outlet of the RO reverse osmosis filter element (13), and the water outlet of the pressure relief valve (15) being connected to the water inlet of the booster pump (12).

6. The cold water return waterway system according to claim 3, characterized in that: The filtering water channel module (10) further comprises a wastewater solenoid valve (16), wherein the water inlet of the wastewater solenoid valve (16) is connected to the wastewater outlet of the RO reverse osmosis filter element (13).

7. The cold water return waterway system according to claim 3, characterized in that: The filtration water channel module (10) further comprises a check valve (17), wherein the check valve (17) is arranged at the water outlet of the RO reverse osmosis filter element (13).

8. The cold water return waterway system according to claim 3, characterized in that: The filtering water channel module (10) further comprises a flow meter (18), and the flow meter (18) is arranged at the water outlet of the RO reverse osmosis filter element (13).

9. The cold water return waterway system according to any one of claims 1 to 8, characterized in that: The cold water return water circuit system also includes a cold water solenoid valve (28), and the water inlet of the cold water solenoid valve (28) is connected to the water outlet of the filter water circuit module (10).

10. A water purifier, characterized in that: It comprises a water purifier body and a cold water return waterway system as claimed in any one of claims 1 to 9, wherein the cold water return waterway system is arranged on the water purifier body.

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