CN212315652U - Constant temperature controlling means and purifier of intaking - Google Patents

Abstract

The utility model provides a constant temperature controlling means and purifier of intaking. The constant temperature controlling means of intaking includes: a cold water line for receiving cold water; a hot water line for receiving hot water; the confluence pipeline is communicated to the cold water pipeline and the hot water pipeline; the first flow control valve is arranged on the cold water pipeline; the second flow control valve is arranged on the hot water pipeline; a controller; and the controller is respectively electrically connected to the temperature sensor, the first flow control valve and the second flow control valve and controls the first flow control valve and the second flow control valve based on the water temperature so as to enable the water temperature in the confluent pipeline to reach the preset water temperature. Through the arrangement, for example, the water-requiring device of the water purifier can be free from a built-in heating device, and the control of the inlet water temperature of the water-requiring device is realized.

Description

Constant temperature controlling means and purifier of intaking

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a constant temperature controlling means and have this constant temperature controlling means's purifier of intaking.

Background

With the pursuit of the public on the quality of life, the water purifier gradually enters the families of people. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The reverse osmosis filter element is a core component of the reverse osmosis water purifier. The raw water is filtered by the reverse osmosis membrane to generate pure water and concentrated water according to the proportion. The water yield of the reverse osmosis filter element is greatly influenced by the temperature of inlet water. The inlet water is usually tap water, and when the ambient temperature is lower, the temperature of the tap water is reduced. Along with the reduction of the temperature of inlet water, the water yield of the reverse osmosis filter element is greatly reduced, and the use of a user is seriously influenced. In order to solve the above problems, in the prior art, a heating device is usually arranged in the water purifier, and the inlet water is heated by the heating device, so that the purpose of controlling the temperature of the inlet water is achieved.

However, when a user takes water, in order to realize that the water purifier can quickly supply water, the heating device needs to have a space for accommodating the intake water so that the intake water can be heated in advance. Meanwhile, in order to ensure that the water producing capacity of the water purifier is stable when the user continuously takes water, the heating device needs to have a large power so as to ensure that the supplemented inlet water can be quickly heated to the expected water temperature. The size that leads to the purifier like this is great to the energy consumption is higher, especially when the user water intaking volume is great, because the heating of intaking needs the certain time, the temperature of intaking hardly lasts and guarantees, and the water yield of purifier can obviously descend, and the user uses and experiences relatively poorly.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems occurring in the prior art, according to an aspect of the present invention, there is provided a constant temperature water inlet control device. The constant temperature water inlet control device comprises a cold water pipeline, a hot water pipeline and a confluence pipeline, wherein the cold water pipeline is used for receiving cold water, the hot water pipeline is used for receiving hot water, the confluence pipeline is communicated to the cold water pipeline and the hot water pipeline, the constant temperature water inlet control device further comprises a first flow control valve, a second flow control valve and a controller, the first flow control valve is arranged on the cold water pipeline, the second flow control valve is arranged on the hot water pipeline, the constant temperature water inlet control device further comprises one or two temperature sensors used for detecting the temperature of water in the pipeline, and when the constant temperature water inlet control device comprises one temperature sensor, one temperature sensor is arranged on the confluence pipeline; when the constant-temperature water inlet control device comprises two temperature sensors, the two temperature sensors are respectively arranged on two of the cold water pipeline, the hot water pipeline and the confluence pipeline, the controller is respectively electrically connected to the temperature sensors, the first flow control valve and the second flow control valve, and the controller controls the first flow control valve and the second flow control valve based on water temperature so that the water temperature in the confluence pipeline reaches preset water temperature.

Through the arrangement, for example, the water-requiring device of the water purifier can be free from a built-in heating device, the conditions of a water heater, municipal heating and the like are fully utilized, and the control of the water inlet temperature of the water-requiring device is realized, so that the water-requiring device is in a better working state. By taking a water-requiring device as a water purifier, the water yield and the desalination rate of the filtering device can be effectively improved, the service life of the filtering device is prolonged, and the use experience is improved.

Illustratively, the temperature sensor includes a first temperature sensor disposed upstream of the first flow control valve. Therefore, no matter whether the first flow control valve is opened or not, the first temperature sensor can quickly and accurately detect the temperature of cold water in the cold water pipeline, and the water inlet temperature adjusting speed of the reverse osmosis filter element is high.

Illustratively, the temperature sensor includes a second temperature sensor disposed upstream of the second flow control valve. Therefore, no matter whether the second flow control valve is opened or not, the second temperature sensor can quickly and accurately detect the temperature of hot water in the hot water pipeline, and the water inlet temperature adjusting speed of the reverse osmosis filter element is high.

According to another aspect of the utility model, still provide a purifier. The water purifier comprises a filtering device and any one of the constant-temperature water inlet control devices, wherein a confluence pipeline of the constant-temperature water inlet control device is communicated with the filtering device. From this, the constant temperature controlling means that intakes can effectively improve filter equipment's water yield and desalination, prolong its life, promote to use and experience.

Illustratively, the filter device comprises a booster pump and a reverse osmosis filter element, the confluence pipeline is communicated to a water inlet of the booster pump, and a water outlet of the booster pump is communicated to a water inlet of the reverse osmosis filter element. The constant temperature water inlet control device can ensure that the reverse osmosis filter element is in a better working state, and the reverse osmosis filter element has higher water yield and desalination rate and longer service life.

Illustratively, the purifier still includes the solenoid valve of intaking, and the solenoid valve of intaking communicates between constant temperature water inlet control device and filter equipment. Through setting up the solenoid valve of intaking, can cut off into water effectively, prevent that water from continuously getting into the purifier, causing the waste.

Illustratively, the purifier still includes the low-pressure switch, and the low-pressure switch intercommunication is between constant temperature water inlet control device and filter equipment. Through setting up low-voltage switch, can prevent when not having water that the booster pump idles, cause the damage of booster pump, low-voltage switch plays the effect of protection purifier. The controller may be integrated with the controller or provided separately.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic water path diagram of a water purifier according to a first exemplary embodiment of the present invention;

fig. 2 is a schematic water path diagram of a water purifier according to a second exemplary embodiment of the present invention;

fig. 3 is a schematic water path diagram of a water purifier according to a third exemplary embodiment of the present invention;

fig. 4 is a schematic water path diagram of a water purifier according to a fourth exemplary embodiment of the present invention; and

fig. 5 is a schematic circuit diagram of a water purifier according to an exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a controller; 200. a booster pump; 300. a reverse osmosis filter element; 410. a cold water line; 420. a hot water pipeline; 430. a converging pipeline; 510. a first flow control valve; 520. a second flow control valve; 610. a first temperature sensor; 620. a second temperature sensor; 630. a third temperature sensor; 700. a water inlet electromagnetic valve; 710. and a low-voltage switch.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates preferred embodiments of the invention by way of example only and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In order to avoid the problem that the water temperature of intaking of purifier is lower, leads to the water yield of purifier obviously to descend, according to the utility model discloses an aspect provides a constant temperature controlling means that intakes. The constant temperature water inlet control device can be connected to the water inlet end of the water purifier. Therefore, according to another aspect of the present invention, there is also provided a water purifier. The water purifier can comprise the constant-temperature water inlet control device and a filtering device. The constant-temperature water inlet control device is connected to the water inlet of the filtering device. From this, the constant temperature controlling means that intakes can effectively improve filter equipment's water yield and desalination, prolong its life, promote to use and experience. Fig. 1 to 4 are schematic water paths of a water purifier using a constant temperature water inlet control device (see a dashed box in the figure) according to four embodiments of the present invention, and arrows shown in the figures schematically show the flowing direction of water flow in the water purifier. If necessary, the constant temperature water inlet control device can also be used for other water-requiring devices needing to keep the temperature of inlet water at the preset water temperature, such as a dish washer and the like.

As shown in fig. 1-4, the constant temperature inlet control device may include a cold water line 410, a hot water line 420, and a converging line 430. The cold water line 410 may be used to receive cold water. The cold water may come from any source, typically tap water. Tap water may be provided through a tap water line, a water tank, and the like in various manners. Hot water line 420 may be used to receive hot water. The hot water may be provided by municipal heating, water heaters, and the like. The water heater can comprise any type of gas water heater, solar water heater, electric water heater and the like. The converging line 430 may be connected to the cold water line 410 and the hot water line 420. One end of the confluent line 430 may be connected to the cold water line 410 and the hot water line 420 by any means such as a three-way joint. The pipe diameters of the cold water pipe 410, the hot water pipe 420, and the joining pipe 430 may be the same or different. The confluent line 430 delivers water in the cold water line 410 and the hot water line 420 to the filtering device. In the illustrated embodiment, the filtration apparatus may include a booster pump 200 and a reverse osmosis filter element 300. That is, the other end of the joining line 430 may communicate to the water inlet of the booster pump 200. The water outlet of the booster pump 200 may be communicated to the water inlet of the reverse osmosis filter 300. The constant temperature water inlet control device can ensure that the reverse osmosis filter element is in a better working state, and the reverse osmosis filter element has higher water yield and desalination rate and longer service life. In other embodiments not shown, the filtration device may also include one or more of an ultrafiltration cartridge, a nanofiltration cartridge, and the like.

The thermostatic waterintake control device may also include a first flow control valve 510 and a second flow control valve 520. The first flow control valve 510 may be provided at any position on the cold water line 410. The second flow control valve 520 may be disposed at any position on the hot water pipe 420. The first flow control valve 510 and the second flow control valve 520 may employ various types of flow control valves known in the art or that may occur in the future. The first flow control valve 510 and the second flow control valve 520 may be the same or different.

The thermostatic inlet control may also include one or two temperature sensors. The temperature sensor may employ various types of temperature sensors known in the art or that may occur in the future. The temperature sensor may be used to detect the temperature of the water in the pipeline. When the thermostatic inlet control device includes a temperature sensor (e.g., third temperature sensor 630), a temperature sensor may be disposed on the converging line 430, see FIG. 1. The third temperature sensor 630 may detect the temperature of water in the merged pipe 430. When the thermostatic inlet control device includes two temperature sensors (e.g., two of the first temperature sensor 610, the second temperature sensor 620, and the third temperature sensor 630), the two temperature sensors may be disposed on two of the cold water line 410, the hot water line 420, and the joining line 430, respectively, see fig. 2-4. Specifically, as shown in fig. 2, when the constant temperature inlet control means includes a first temperature sensor 610 and a second temperature sensor 620, the first temperature sensor 610 and the second temperature sensor 620 may be provided on the cold water pipe 410 and the hot water pipe 420, respectively. The first and second temperature sensors 610 and 620 may detect the temperature of the cold water in the cold water line 410 and the temperature of the hot water in the hot water line 420, respectively. As shown in fig. 3, when the constant temperature water inflow control means includes the first temperature sensor 610 and the third temperature sensor 630, the first temperature sensor 610 and the third temperature sensor 630 may be disposed on the cold water line 410 and the joining line 430, respectively. The first temperature sensor 610 and the third temperature sensor 630 may detect the temperature of the cold water in the cold water line 410 and the temperature of the water in the joining line 430, respectively. As shown in fig. 4, when the constant temperature water inlet control means includes the second temperature sensor 620 and the third temperature sensor 630, the second temperature sensor 620 and the third temperature sensor 630 may be disposed on the hot water line 420 and the joining line 430, respectively. The second temperature sensor 620 and the third temperature sensor 630 may detect the temperature of the cold water in the hot water line 420 and the temperature of the water in the joining line 430, respectively.

Referring to fig. 5 in combination, the constant temperature water intake control apparatus may further include a controller 100. The controller 100 may be electrically connected to the temperature sensor, the first flow control valve 510, and the second flow control valve 520, respectively. The controller 100 may control the first and second flow control valves 510 and 520 based on the water temperature detected by the temperature sensor such that the water temperature in the merged pipe 430 reaches a preset water temperature. The preset water temperature may be a preset water temperature value or a preset water temperature range of a preset suitable filtering device (such as the reverse osmosis filter element 300 therein). The preset water temperature value or the preset water temperature range can be set by a user according to the application scene of the water purifier or set when the water purifier leaves a factory. The temperature sensor detects the water temperature in the pipeline where the temperature sensor is located and sends the water temperature to the controller 100, the controller 100 can compare the water temperature with a preset water temperature and control the flow of the first flow control valve 510 and the second flow control valve 520 based on the comparison result, so that the flow ratio of cold water and hot water is adjusted, the water temperature in the confluence pipeline 430 reaches the preset water temperature, and the purpose of controlling the water temperature of the reverse osmosis filter element 300 is achieved.

The reverse osmosis filter element 300 can effectively remove impurities such as calcium, magnesium, bacteria, organic matters, inorganic matters, metal ions, radioactive substances and the like in water. The water yield of the reverse osmosis filter element 300 is greatly affected by the water temperature. When the ambient temperature of the water purifier is lower, the temperature of tap water is reduced. Along with the reduction of the temperature of tap water, the water yield of the reverse osmosis filter element 300 is greatly reduced. The reverse osmosis cartridge 300 may be adapted to water temperatures between 5 degrees celsius and 38 degrees celsius. Preferably, the reverse osmosis filter element 300 can be in a better working state when the water temperature is between 20 and 30 degrees celsius. At this water temperature, the reverse osmosis filter element 300 has a high water yield and salt rejection rate and a long service life. For the reverse osmosis cartridge 300, the predetermined water temperature value or predetermined water temperature range may be any value or any range between 5 degrees celsius and 38 degrees celsius, preferably any value or any range between 20 degrees celsius and 30 degrees celsius. Optionally, the preset water temperature value or the preset water temperature range may be determined according to factors such as a geographical location of the water purifier. The principle of the present invention will be described below by taking a water temperature range with a preset water temperature of 20 to 30 degrees celsius as an example.

The constant temperature water inlet control device and the water purifier with the same according to the embodiment of the present invention will be described in detail with reference to fig. 1-4. It can be understood that when the water purifier is not started, the first flow control valve 510 and the second flow control valve 520 are normally closed, so that cold water and hot water can be prevented from entering the water purifier, and waste of water resources is avoided.

In a first preferred embodiment, as shown in fig. 1, the thermostatic water inlet control device comprises a third temperature sensor 630. A third temperature sensor 630 may be disposed on the converging line 430. The third temperature sensor 630 may detect the temperature of water in the merged pipe 430.

When the water purifier is not started, the first flow control valve 510 and the second flow control valve 520 are normally closed, so that cold water and hot water can be prevented from entering the water purifier, and waste of water resources is avoided. When the water purifier is started, the controller 100 may control the first flow control valve 510 to open. In this embodiment, the third temperature sensor 630 detects the water temperature in the merged pipe 430 as the initial water temperature. Since the hot water is not supplied to the joining line 430 at this time, the temperature of the water in the joining line 430 detected by the third temperature sensor 630 is substantially the temperature of the cold water in the cold water line 410. The controller 100 may determine whether to open the second flow control valve 520 according to the initial water temperature. If the initial water temperature is between 20 degrees celsius and 30 degrees celsius, the second flow control valve 520 maintains the closed state. If the initial water temperature is less than 20 degrees celsius, the controller 100 may control the second flow control valve 520 to be opened.

After the second flow control valve 520 is opened, the controller 100 may control the flow rate of the first flow control valve 510 and the flow rate of the second flow control valve 520 based on the water temperature in the confluent pipe 430 detected by the third temperature sensor 630, so as to adjust the flow rate ratio of the cold water and the hot water, so that the water temperature in the confluent pipe 430 reaches the preset water temperature. For example, after the second flow control valve 520 is opened, the third temperature sensor 630 continues to detect the water temperature in the joining line 430, and if the water temperature in the joining line 430 has been adjusted to be between 20 degrees celsius and 30 degrees celsius, the flow rates of the first flow control valve 510 and the second flow control valve 520 are kept unchanged; if the temperature of the water in the merged pipe 430 is still lower than 20 degrees celsius, the flow rate of the second flow control valve 520 is continuously increased, or the flow rate of the first flow control valve 510 is decreased, or the flow rate of the second flow control valve 520 is increased and the flow rate of the first flow control valve 510 is decreased at the same time; conversely, if the temperature of the water in the merged pipe 430 is higher than 30 degrees celsius, the flow rate of the second flow control valve 520 is decreased, or the flow rate of the first flow control valve 510 is increased, or both the flow rate of the second flow control valve 520 and the flow rate of the first flow control valve 510 are decreased. Since the temperature of the cold water is usually tap water, and the temperature of the cold water is usually not higher than 30 ℃, when the water purifier is started, the controller 100 does not consider that the initial temperature of the water in the confluent pipe 430 is higher than 30 ℃. This is the same for the following embodiments, which will not be described again for the sake of brevity. Therefore, the water inlet ratio of cold water and hot water can be accurately adjusted, so that the water inlet temperature of the reverse osmosis filter element 300 can be accurately adjusted, and the reverse osmosis filter element 300 is in the optimal working state.

In a second preferred embodiment, as shown in fig. 2, the constant temperature inlet control means comprises a first temperature sensor 610 and a second temperature sensor 620. The first and second temperature sensors 610 and 620 may be disposed on the cold and hot water pipes 410 and 420, respectively. The first and second temperature sensors 610 and 620 may detect the temperature of the cold water in the cold water line 410 and the temperature of the hot water in the hot water line 420, respectively.

When the water purifier is started, the controller 100 controls the first flow control valve 510 to open. In this embodiment, the temperature of the cold water in the cold water pipeline 410 detected by the first temperature sensor 610 may be used as the initial water temperature. If the controller 100 judges that the initial water temperature is between 20 degrees celsius and 30 degrees celsius, the second flow rate control valve 520 maintains the closed state. If the initial water temperature is less than 20 degrees celsius, the controller 100 may control the second flow control valve 520 to be opened. After the second flow control valve 520 is opened, the controller 100 may accurately calculate a required flow ratio of the cold water and the hot water or flow rates of the cold water and the hot water based on the cold water temperature in the cold water pipeline 410 detected by the first temperature sensor 610 and the hot water temperature in the hot water pipeline 420 detected by the second temperature sensor 620, and control the flow rate of the first flow control valve 510 and the flow rate of the second flow control valve 520, so that the water temperature in the merged pipeline 430 reaches a preset water temperature. In this case, it may also be necessary to set the rated flow rate of the downstream water demand device. Therefore, according to the cold water temperature detected by the first temperature sensor 610 and the hot water temperature detected by the second temperature sensor 620, the controller can accurately control the flow rate or flow ratio of the cold water and the hot water, so that the inlet water temperature of the reverse osmosis filter element 300 can meet the requirement. Moreover, the water purifier can directly detect the water temperatures of cold water and hot water, and the control logic is simple.

In a third preferred embodiment, as shown in fig. 3, the constant temperature inlet control means comprises a first temperature sensor 610 and a third temperature sensor 630. The first temperature sensor 610 and the third temperature sensor 630 may be disposed on the cold water line 410 and the joining line 430, respectively. The first temperature sensor 610 and the third temperature sensor 630 may detect the temperature of the cold water in the cold water line 410 and the temperature of the water in the joining line 430, respectively.

When the water purifier is started, the controller 100 controls the first flow control valve 510 to open. In this embodiment, the temperature of the cold water in the cold water pipeline 410 detected by the first temperature sensor 610 may be used as the initial water temperature. If the controller 100 judges that the initial water temperature is between 20 degrees celsius and 30 degrees celsius, the second flow rate control valve 520 maintains the closed state. If the initial water temperature is less than 20 degrees celsius, the controller 100 may control the second flow control valve 520 to be opened. After the second flow control valve 520 is opened, the controller 100 may determine a required flow ratio of the cold water and the hot water or flow rates of the cold water and the hot water based on the temperature of the cold water in the cold water line 410 detected by the first temperature sensor 610 and the temperature of the water in the merged line 430 detected by the third temperature sensor 630, and control the flow rate of the first flow control valve 510 and the flow rate of the second flow control valve 520 so that the temperature of the water in the merged line 430 reaches a preset water temperature. For example, after the second flow control valve 520 is opened, if the temperature of the water in the confluent line 430 has been adjusted to between 20 degrees celsius and 30 degrees celsius, the flow rates of the first flow control valve 510 and the second flow control valve 520 are kept unchanged; if the temperature of the water in the merged pipe 430 is still lower than 20 degrees celsius, the flow rate of the second flow control valve 520 is continuously increased, or the flow rate of the first flow control valve 510 is decreased, or the flow rate of the second flow control valve 520 is increased and the flow rate of the first flow control valve 510 is decreased at the same time; conversely, if the temperature of the water in the merged pipe 430 is higher than 30 degrees celsius, the flow rate of the second flow control valve 520 is decreased, or the flow rate of the first flow control valve 510 is increased, or both the flow rate of the second flow control valve 520 and the flow rate of the first flow control valve 510 are decreased. The first temperature sensor 610 detects the temperature of the cold water in real time, so that the controller 100 can immediately determine the flow rates of the first flow control valve 510 and the second flow control valve 520 when the system is started, so that the temperature of the inlet water of the reverse osmosis filter element 300 can be between 20 ℃ and 30 ℃ from the initial time of starting. The presence of the third temperature sensor 630 can accurately provide data on the temperature of the water in the confluent line 430, which facilitates the controller 100 to accurately adjust the temperature of the water entering the reverse osmosis filter element 300 to maintain the reverse osmosis filter element 300 in an optimal operating condition.

In a fourth preferred embodiment, as shown in fig. 4, the constant temperature water inlet control means includes a second temperature sensor 620 and a third temperature sensor 630. A second temperature sensor 620 and a third temperature sensor 630 may be provided on the hot water line 420 and the joining line 430, respectively. The second temperature sensor 620 and the third temperature sensor 630 may detect the temperature of the cold water in the hot water line 420 and the temperature of the water in the joining line 430, respectively.

When the water purifier is started, the controller 100 controls the first flow control valve 510 to open. In this embodiment, the temperature of water in the merged pipe 430 detected by the third temperature sensor 630 may be used as the initial water temperature. If the controller 100 judges that the initial water temperature is between 20 degrees celsius and 30 degrees celsius, the second flow rate control valve 520 maintains the closed state. If the initial water temperature is less than 20 degrees celsius, the controller 100 may control the second flow control valve 520 to be opened. After the second flow control valve 520 is opened, the controller 100 may determine a required flow ratio of cold water and hot water or flow rates of cold water and hot water based on the temperature of the hot water in the hot water line 420 detected by the second temperature sensor 620 and the temperature of the water in the confluent line 430 detected by the third temperature sensor 630, and control the flow rate of the first flow control valve 510 and the flow rate of the second flow control valve 520 so that the temperature of the water in the confluent line 430 reaches a preset water temperature. Since the second temperature sensor 620 can detect the hot water temperature in real time and the initial water temperature detected by the third temperature sensor 630 before the second flow control valve 520 is opened is substantially equal to the cold water temperature, the controller 100 can accurately calculate a required flow ratio of cold water and hot water or flow rates of cold water and hot water according to the hot water temperature and the initial water temperature. In this case, it may also be necessary to set the rated flow rate of the downstream water demand device. After the second flow control valve 520 is opened, the third temperature sensor 630 may detect the temperature of the water in the confluent pipe 430 in real time, so that the flow rates of the first flow control valve 510 and the second flow control valve 520 may be precisely fine-tuned in real time, so that the reverse osmosis filter 300 is in an optimal operating state.

Through the arrangement, for example, the water-requiring device of the water purifier can be free from a built-in heating device, the conditions of a water heater, municipal heating and the like are fully utilized, and the control of the water inlet temperature of the water-requiring device is realized, so that the water-requiring device is in a better working state. By taking a water-requiring device as a water purifier, the water yield and the desalination rate of the filtering device can be effectively improved, the service life of the filtering device is prolonged, and the use experience is improved.

Preferably, as shown in fig. 2-3, the first temperature sensor 610 may be disposed upstream of the first flow control valve 510. In this way, no matter whether the first flow control valve 510 is opened or not, the first temperature sensor 610 can detect the temperature of the cold water in the cold water pipeline 410 quickly and accurately, and the inlet water temperature of the reverse osmosis filter element 300 is adjusted at a high speed.

Preferably, as shown in fig. 3-4, the second temperature sensor 620 may be disposed upstream of the second flow control valve 520. In this way, no matter whether the second flow control valve 520 is opened or not, the second temperature sensor 620 can detect the temperature of the hot water in the hot water pipeline 420 quickly and accurately, and the inlet water temperature of the reverse osmosis filter element 300 is adjusted at a high speed.

Illustratively, as shown in fig. 1-4, the water purifier may further include a water inlet solenoid valve 700. The water inlet solenoid valve 700 may be communicated between the constant temperature water inlet control device and the filtering device. In the illustrated embodiment, the inlet solenoid valve 700 may be in communication between the constant temperature inlet control and the booster pump 200. The water outlet of the water inlet solenoid valve 700 may be connected to the water inlet of the booster pump 200. When the water purifier is not started, the water inlet electromagnetic valve 700 can be closed. Through setting up into water solenoid valve 700, can cut off into water effectively, prevent that water from continuing to get into the purifier, causing the waste.

Illustratively, as shown in fig. 1-4, the water purifier may further include a low-voltage switch 710. The low pressure switch 710 may be in communication between the constant temperature inlet control device and the filtration device. In the illustrated embodiment, the low pressure switch 710 may be in communication between the constant temperature inlet control and the booster pump 200. In the case of the water inlet solenoid valve 700, the low pressure switch 710 may be located before the water inlet solenoid valve 700. When no water enters the water purifier due to the reasons of water inlet pipeline blockage or bursting and the like, the water pressure in the pipeline is low, and the low-voltage switch 710 is switched off. At which time the controller may close the inlet solenoid valve 700 (if any) and the booster pump 200. When water enters the water purifier, a certain water pressure exists in the pipeline, and the low-pressure switch 710 is turned on. At which time the controller may open the inlet solenoid valve 700 (if any) and the booster pump 200. Through setting up low-voltage switch 710, can prevent when not having water that booster pump 200 idle running causes the damage of booster pump 200, low-voltage switch 710 plays the effect of protection purifier. The controller may be integrated with the controller 100 or provided separately.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A constant-temperature water inlet control device is characterized by comprising a cold water pipeline (410), a hot water pipeline (420) and a confluence pipeline (430), wherein the cold water pipeline is used for receiving cold water, the hot water pipeline is used for receiving hot water, and the confluence pipeline is communicated with the cold water pipeline and the hot water pipeline,

the constant temperature water inlet control device also comprises a first flow control valve (510), a second flow control valve (520) and a controller (100), wherein the first flow control valve is arranged on the cold water pipeline, the second flow control valve is arranged on the hot water pipeline,

the constant-temperature water inlet control device also comprises one or two temperature sensors for detecting the temperature of water in the pipeline, wherein when the constant-temperature water inlet control device comprises one temperature sensor, the one temperature sensor is arranged on the junction pipeline; when the constant temperature water inlet control device comprises two temperature sensors, the two temperature sensors are respectively arranged on two of the cold water pipeline, the hot water pipeline and the confluence pipeline,

the controller is electrically connected to the temperature sensor, the first flow control valve and the second flow control valve respectively, and controls the first flow control valve and the second flow control valve based on the water temperature so that the water temperature in the confluent pipeline reaches a preset water temperature.

2. The thermostatic waterintake control device of claim 1, wherein the temperature sensor comprises a first temperature sensor (610), the first temperature sensor (610) being disposed upstream of the first flow control valve (510).

3. The thermostatic waterintake control device of claim 1, wherein the temperature sensor comprises a second temperature sensor (620), the second temperature sensor (620) being disposed upstream of the second flow control valve (520).

4. A water purification machine comprising a filtration device and a thermostatic water inlet control device according to any of claims 1-3, the converging line (430) of the thermostatic water inlet control device being connected to the filtration device.

5. The water purifier as recited in claim 4, wherein said filtering means comprises a booster pump (200) and a reverse osmosis cartridge (300), said converging line (430) being connected to a water inlet of said booster pump, a water outlet of said booster pump being connected to a water inlet of said reverse osmosis cartridge.

6. The water purification machine according to claim 4, further comprising a water inlet solenoid valve (700) communicating between said thermostatic water inlet control means and said filtering means.

7. The water purifier of claim 4, further comprising a low pressure switch (710) in communication between said constant temperature inlet control means and said filtering means.

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