Water purifier

Abstract

The utility model discloses a water purifier. The water purifier comprises a purified water supply unit and a water purification unit, the heating unit is used for heating; the heat exchange device is provided with a first flow channel and a second flow channel which can enable flowing liquid to carry out heat exchange; a second water storage unit; an outlet of the purified water supply unit is communicated with the first water storage unit through the first pipeline; an outlet of the purified water supply unit is communicated with an inlet of the first flow channel through the second pipeline; the first water storage unit is communicated with an outlet of the first flow channel through the third pipeline; the first water storage unit is communicated with an inlet of the second flow channel through the fourth pipeline; and the like. The problem that in the prior art, in order to make the output temperature of the cold boiled water reach the preset requirement, the cost of the water purifier is high, and the problem that in the prior art, the temperature of water in the cold boiled water storage tank needs to wait for a period of time to reach the preset requirement, and consequently the user experience feeling is poor can be solved.

Description

Technical Field

[0001] This utility model relates to the field of water supply technology, and in particular to a water purifier. Background Technology

[0002] With the popularization of the concept of healthy drinking water, direct drinking water purification equipment has been widely used in densely populated public places such as shopping malls, campuses, and public communities. Among the various types of drinking water available, boiled water has become a popular choice for healthy drinking water because it conforms to the public's traditional drinking habits and undergoes strict sterilization treatment.

[0003] Currently, mainstream water purification equipment on the market mainly relies on the following two methods to achieve the output of cooled boiled water at the set temperature: 1. Flow ratio regulation: This method uses a proportional valve or controls the duty cycle of the hot water pump and the cold water pump to regulate the flow ratio of hot and cold purified water, thereby ensuring that the output cooled boiled water temperature meets the set requirements. However, this method has significant drawbacks. The proportional valve and the related components and control technologies involved in adjusting the pump duty cycle result in relatively high costs, which undoubtedly increases the economic burden of equipment production and maintenance, limiting the widespread application of this type of equipment. 2. Water tank heating method: Direct drinking water purification equipment has a dedicated water tank for storing cooled boiled water, which has a heating function. First, cooled boiled water after heat exchange is poured into the water tank. At this temperature, it often differs from the set temperature. Then, heating is used to bring the cooled boiled water in the water tank to the set temperature. However, this method also has obvious shortcomings. When users need to draw water, if the water temperature in the storage tank has not reached the set value, users often have to wait for a period of time until the storage tank completes the heating process, which greatly affects the user experience and reduces the convenience and efficiency of using the equipment.

[0004] In summary, the two existing methods for ensuring that direct drinking water purifiers output boiled water at a set temperature have significant drawbacks in terms of cost control and user experience. An innovative technological solution is urgently needed to address these issues and drive the direct drinking water purifier industry towards a more economical, convenient, and user-friendly direction. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present utility model is to provide a water purifier that can solve the problems of high cost of water purifiers caused by the need to make the output cooled boiled water reach the preset temperature and poor user experience caused by the need to wait for a period of time for the water in the cooled boiled water storage tank to reach the preset temperature.

[0006] The specific technical solution of this utility model embodiment is as follows:

[0007] A water purifier, the water purifier comprising:

[0008] Water purification supply unit;

[0009] A first water storage unit and a heating unit for heating the purified water in the first water storage unit;

[0010] A heat exchange device having a first flow channel and a second flow channel that enable heat exchange of a flowing liquid;

[0011] Second water storage unit;

[0012] The first pipeline connects the outlet of the purified water supply unit to the first water storage unit.

[0013] The outlet of the water purification supply unit is connected to the inlet of the first flow channel through the second pipeline;

[0014] The third pipeline connects the first water storage unit to the outlet of the first flow channel.

[0015] The fourth pipeline connects the first water storage unit to the inlet of the second flow channel.

[0016] The fifth pipeline connects the second water storage unit to the outlet of the second flow channel.

[0017] An on / off control unit is used to control the on / off connection between the outlet of the water supply unit and the first pipeline and to control the on / off connection between the outlet of the water supply unit and the second pipeline.

[0018] The water purifier has a second water storage unit replenishment state, which includes at least a first stage and a second stage. In the first stage, the on / off control unit controls the outlet of the purified water supply unit to be disconnected from the first pipeline, and the outlet of the purified water supply unit to be connected to the second pipeline, so that when the purified water supply unit can replenish the first water storage unit with cold purified water output sequentially through the second pipeline, the first flow channel, and the third pipeline, hot purified water in the first water storage unit is replenished to the second water storage unit sequentially through the fourth pipeline, the second flow channel, and the fifth pipeline. In the second stage, the on / off control unit controls the outlet of the purified water supply unit to be connected to the first pipeline, and the outlet of the purified water supply unit to be disconnected from the second pipeline, so that when the purified water supply unit can replenish the first water storage unit with cold purified water output through the first pipeline, hot purified water in the first water storage unit is replenished to the second water storage unit.

[0019] Preferably, in the second stage, hot purified water from the first water storage unit is sequentially replenished into the second water storage unit through the fourth pipeline, the second flow channel, and the fifth pipeline.

[0020] Preferably, the water purifier further includes a sixth pipeline, through which the first water storage unit is connected to the second water storage unit. In the second stage, hot purified water in the first water storage unit is replenished into the second water storage unit through the sixth pipeline.

[0021] Preferably, the first stage is executed for a first duration, and the second stage is executed for a second duration.

[0022] Preferably, in the first stage, the outlet of the water purification unit is disconnected from the first pipeline for a first duration, and the outlet of the water purification unit is connected to the second pipeline for a first duration; in the second stage, the outlet of the water purification unit is disconnected from the second pipeline for a second duration, and the outlet of the water purification unit is connected to the first pipeline for a second duration.

[0023] Preferably, when the temperature of the water flowing into or out of the water supply unit is lower than a preset temperature, the first stage and the second stage are executed alternately.

[0024] Preferably, the first duration is longer than the second duration.

[0025] Preferably, the first duration is positively correlated with the temperature of the water flowing into or out of the water purification supply unit.

[0026] Preferably, the second duration is negatively correlated with the temperature of the water flowing into or out of the water purification supply unit.

[0027] Preferably, the ratio of the first duration to the second duration is positively correlated with the temperature of the water flowing into or out of the water purification supply unit.

[0028] Preferably, the first stage is executed before the second stage.

[0029] Preferably, the first stage and the second stage are executed sequentially without interruption.

[0030] Preferably, when the water level in the second water storage unit is lower than a preset level, the water purifier enters the water replenishment state of the second water storage unit; or, when the cumulative water extraction time from the second water storage unit exceeds a preset duration, the water purifier enters the water replenishment state of the second water storage unit.

[0031] Preferably, the water purifier further includes:

[0032] A first temperature detection component is used to obtain the temperature of water flowing into or out of the water purification supply unit.

[0033] The second temperature detection component is used to detect the water temperature in the first water storage unit or the water temperature flowing out of the first water storage unit; or, the water purifier stores a preset water temperature in the first water storage unit or the water temperature flowing out of the first water storage unit.

[0034] A third temperature detection component is used to detect the water temperature in the second water storage unit or the water temperature flowing out of the second water storage unit; or, the water purifier stores a preset water temperature in the second water storage unit or the water temperature flowing out of the second water storage unit.

[0035] Preferably, the ratio of the first duration to the second duration is determined by the temperature of the water flowing into or out of the purified water supply unit, the temperature of the water in or out of the first water storage unit, and the temperature of the water in or out of the second water storage unit.

[0036] Preferably, the water purifier stores a preset second duration.

[0037] Preferably, the first duration is determined by the temperature of the water flowing into or out of the purified water supply unit, the temperature of the water in or out of the first water storage unit, the temperature of the water in or out of the first water storage unit, the temperature of the water in or out of the second water storage unit, and a preset second duration.

[0038] Preferably, the water purifier further includes a control unit, which is electrically connected to the first temperature detection component, the second temperature detection component, the third temperature detection component, and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit as measured by the first temperature detection component, the temperature of the water in or out of the first water storage unit as measured by the second temperature detection component, and the temperature of the water in or out of the second water storage unit as measured by the third temperature detection component.

[0039] Preferably, the water purifier further includes a control unit, which is electrically connected to the first temperature detection component, the third temperature detection component, and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit as measured by the first temperature detection component, the water temperature stored in or out of the first water storage unit in the water purifier (which is preset), and the water temperature in or out of the second water storage unit as measured by the third temperature detection component.

[0040] Preferably, the water purifier further includes a control unit, which is electrically connected to the first temperature detection component, the second temperature detection component, and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit as measured by the first temperature detection component, the temperature of the water in or out of the first water storage unit as measured by the second temperature detection component, and the preset temperature of the water in or out of the second water storage unit stored in the water purifier.

[0041] Preferably, the water purifier further includes a control unit, which is electrically connected to the first temperature detection component and the on / off control unit respectively. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit measured by the first temperature detection component, the water temperature stored in or out of the first water storage unit in the water purifier (which is preset), and the water temperature stored in or out of the second water storage unit in the water purifier (which is preset).

[0042] Preferably, the control unit controls the first stage and the second stage to be executed alternately. After the first stage is executed for the first duration, the second stage is executed, and the second stage is executed for the second duration.

[0043] Preferably, in the first stage, the control unit controls the on / off control unit to connect the outlet of the purified water supply unit to the second pipeline for a first duration, and disconnect the outlet of the purified water supply unit from the first pipeline for a first duration; in the second stage, the control unit controls the outlet of the purified water supply unit to connect to the first pipeline for a second duration, and disconnect the outlet of the purified water supply unit from the second pipeline for a second duration.

[0044] Preferably, the heat exchange device includes a first heat exchange tube and a second heat exchange tube passing through the first heat exchange tube, wherein one of the first flow channel and the second flow channel is formed inside the second heat exchange tube, and the other of the first flow channel and the second flow channel is formed between the outer sidewall of the second heat exchange tube and the inner sidewall of the first heat exchange tube.

[0045] Preferably, the water purifier further includes a water output mechanism, which is connected to the second water storage unit.

[0046] Preferably, the on / off control unit includes:

[0047] A first on / off valve is installed on the second pipeline or the third pipeline;

[0048] A second on / off valve is installed on the first pipeline.

[0049] Preferably, the on / off control unit includes: a two-position three-way solenoid valve with one inlet and two outlets or a two-position three-way directional valve.

[0050] The technical solution of this utility model has the following significant beneficial effects:

[0051] The water supply unit replenishes purified water into the first water storage unit. The heating unit heats the purified water in the first water storage unit, bringing it to a boil or near-boiled temperature. The second water storage unit stores cooled boiled water for the user, with a temperature that meets a preset temperature, typically higher than room temperature. When the second water storage unit needs replenishment, the water purifier enters a replenishment state. In this state, two stages can be executed. In the first stage, the on / off control unit disconnects the outlet of the water supply unit from the first pipeline and connects it to the second pipeline. The water supply unit then sequentially replenishes the first water storage unit with cooled purified water through the second pipeline, the first flow channel, and the third pipeline. Simultaneously, heated purified water from the first water storage unit is replenished into the second water storage unit through the fourth pipeline, the second flow channel, and the fifth pipeline. In the first stage, the water added to the second water storage unit exchanges heat with the water added to the first water storage unit as it flows through the second flow channel, thus achieving a cooling effect. However, this cooling effect results in the water temperature in the second water storage unit being lower than the preset water temperature. In the second stage, the on / off control unit controls the outlet of the purified water supply unit to be connected to the first pipeline and disconnected from the second pipeline. This allows the purified water supply unit to supply cold purified water to the first water storage unit through the first pipeline, while the hot purified water in the first water storage unit is supplied to the second water storage unit. Since the temperature of the hot purified water is much higher than the preset water temperature, the hot purified water supplied to the second water storage unit in the second stage can neutralize the water supplied to the second water storage unit in the first stage, so that the mixed temperature reaches the preset water temperature. Through the above methods, the first and second stages allow the water added to the second water storage unit to directly reach the preset water temperature, so users can obtain cooled boiled water at the preset temperature at any time without any waiting. Secondly, the water purifier only needs one on / off control unit to control the connection between the outlet of the purified water supply unit and the first pipeline, and the connection between the outlet of the purified water supply unit and the second pipeline, to achieve the preset temperature of the water added to the second water storage unit. This eliminates the need for costly proportional valves or electronic control components that adjust the duty cycle of the hot water pump and the cold water pump, thus achieving the goal of cost reduction.

[0052] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0053] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0054] Figure 1 This is a schematic diagram of the water purifier in the first embodiment of the present invention;

[0055] Figure 2 This is a schematic diagram of the water purifier in the second embodiment of the present invention;

[0056] Figure 3 This is a schematic diagram of the on / off control unit in one embodiment of the present invention;

[0057] Figure 4 This is a schematic diagram of the on / off control unit in another embodiment of the present invention.

[0058] The reference numerals in the above figures are as follows:

[0059] 1. Water supply unit; 2. First water storage unit; 21. Heating unit; 3. Heat exchange device; 31. First flow channel; 32. Second flow channel; 4. Second water storage unit; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Fourth pipeline; 9. Fifth pipeline; 10. On / off control unit; 101. First on / off valve; 102. Second on / off valve; 11. Sixth pipeline; 12. First temperature detection component; 13. Second temperature detection component; 14. Third temperature detection component; 15. Water output mechanism; 16. Third on / off valve; 17. Fourth on / off valve. Detailed Implementation

[0060] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are only for explaining the purpose of this utility model and should not be construed as limiting this utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, or it can be a connection within two elements, which can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0062] To address the issues of high cost in existing water purifiers due to the need to ensure the output boiled water reaches a preset temperature, and poor user experience caused by the time required for the water in the storage tank to reach the preset temperature, this application proposes a water purifier. Figure 1 This is a schematic diagram of the water purifier in the first embodiment of the present invention. Figure 2 This is a schematic diagram of the water purifier in the second embodiment of the present invention, as shown below. Figure 1 and Figure 2As shown, the water purifier may include: a purified water supply unit 1; a first water storage unit 2 and a heating unit 21 for heating the purified water in the first water storage unit 2; a heat exchange device 3, which has a first flow channel 31 and a second flow channel 32 for heat exchange of the flowing liquid; a second water storage unit 4; a first pipe 5, through which the outlet of the purified water supply unit 1 is connected to the first water storage unit 2; a second pipe 6, through which the outlet of the purified water supply unit 1 is connected to the inlet of the first flow channel 31; a third pipe 7, through which the first water storage unit 2 is connected to the outlet of the first flow channel 31; a fourth pipe 8, through which the first water storage unit 2 is connected to the inlet of the second flow channel 32; a fifth pipe 9, through which the second water storage unit 4 is connected to the outlet of the second flow channel 32; and an on / off control unit 10, which controls the on / off connection between the outlet of the purified water supply unit 1 and the first pipe 5 and the second pipe 6.

[0063] The water purifier may have a second water storage unit 4 water replenishment state. The second water storage unit 4 water replenishment state includes at least a first stage and a second stage. In the first stage, the on / off control unit 10 controls the outlet of the purified water supply unit 1 to be disconnected from the first pipe 5, and the outlet of the purified water supply unit 1 to be connected to the second pipe 6, so that when the purified water supply unit 1 outputs cold purified water sequentially through the second pipe 6, the first flow channel 31, and the third pipe 7 to replenish the first water storage unit 2, the hot purified water in the first water storage unit 2 is sequentially replenished to the second water storage unit 4 through the fourth pipe 8, the second flow channel 32, and the fifth pipe 9. In the second stage, the on / off control unit 10 controls the outlet of the purified water supply unit 1 to be connected to the first pipe 5, and the outlet of the purified water supply unit 1 to be disconnected from the second pipe 6, so that when the purified water supply unit 1 outputs cold purified water to replenish the first water storage unit 2 through the first pipe 5, the hot purified water in the first water storage unit 2 is replenished to the second water storage unit 4.

[0064] The purified water supply unit 1 can replenish purified water into the first water storage unit 2, and the heating unit 21 heats the purified water in the first water storage unit 2, thereby turning the purified water in the first water storage unit 2 into boiling or near-boiling water. The second water storage unit 4 is used to store cooled boiled water for supply to users. The temperature of the cooled boiled water can meet the preset water temperature, which is generally a temperature higher than room temperature. When the second water storage unit 4 needs to be replenished, the water purifier can enter the replenishment state of the second water storage unit 4. In the replenishment state of the second water storage unit 4, the first stage and the second stage can be executed respectively. In the first stage, the on / off control unit 10 controls the outlet of the purified water supply unit 1 to be disconnected from the first pipeline 5, and the outlet of the purified water supply unit 1 to be connected to the second pipeline 6. When the purified water supply unit 1 can replenish the cold purified water output by the purified water supply unit 1 into the first water storage unit 2 in sequence through the second pipeline 6, the first flow channel 31 and the third pipeline 7, the hot purified water in the first water storage unit 2 is replenished into the second water storage unit 2 in sequence through the fourth pipeline 8, the second flow channel 32 and the fifth pipeline 9. In unit 4, the water added to the second water storage unit 4 will exchange heat with the water added to the first water storage unit 2 when flowing through the second flow channel 32, thereby achieving the purpose of cooling. However, the degree of cooling will make the temperature of the water added to the second water storage unit 4 lower than the preset water temperature. In the second stage, the on / off control unit 10 controls the outlet of the purified water supply unit 1 to be connected to the first pipeline 5, and the outlet of the purified water supply unit 1 to be disconnected from the second pipeline 6, so that when the purified water supply unit 1 can add cold purified water to the first water storage unit 2 through the first pipeline 5, the hot purified water in the first water storage unit 2 is added to the second water storage unit 4. Since the temperature of the hot purified water is much higher than the preset water temperature, the hot purified water added to the second water storage unit 4 in the second stage can neutralize the water added to the second water storage unit 4 in the first stage, so that the temperature of the mixture reaches the preset water temperature. Through the above methods, the water temperature added to the second water storage unit 4 can directly reach the preset water temperature through the first and second stages. This allows users to obtain cooled boiled water at the preset temperature at any time without any waiting. Secondly, the water purifier only needs one on / off control unit 10 to control the on / off connection between the outlet of the purified water supply unit 1 and the first pipeline 5 and the outlet of the purified water supply unit 1 and the second pipeline 6 to achieve the preset temperature of the water added to the second water storage unit 4. This eliminates the need for costly proportional valves or electronic control components that adjust the duty cycle of the hot water pump and the cold water pump, thus achieving the goal of cost reduction.

[0065] To better understand the water purifier in this application, further explanation and description will be provided below. For example... Figure 1 and Figure 2As shown, the water purifier may include: a purified water supply unit 1, a first water storage unit 2, a heating unit 21 for heating the purified water in the first water storage unit 2, a second water storage unit 4, a first pipeline 5, a second pipeline 6, a third pipeline 7, a fourth pipeline 8, a fifth pipeline 9, and an on / off control unit 10. The purified water supply unit 1 can output purified water as needed. The purified water supply unit 1 can store a certain amount of purified water for output when needed; for example, the purified water supply unit 1 can be a purified water storage container. The purified water supply unit 1 can also purify raw water to form purified water and output purified water when needed; for example, the purified water supply unit 1 may include at least one filter unit for purifying and filtering raw water, and may also include a booster pump to pressurize the raw water, thereby increasing the water purification rate of the filter unit. The filter unit may include one type of filter unit, or it may include multiple different types of filter units, such as a pre-filter unit, a post-filter unit, and a fine filter unit for fine filtration of water.

[0066] The first water storage unit 2 can be used to store the purified water input from the water supply unit 1. Simultaneously, in conjunction with the heating unit 21, it can heat the input purified water to a high temperature, such as boiling temperature, near-boiling temperature, or any high temperature set by the user, provided the water at this temperature is safe for drinking. The outlet of the water supply unit 1 can be connected to the first water storage unit 2 via the first pipe 5. The second water storage unit 4 is used to store cooled boiled water for the user. The temperature of this cooled boiled water can meet a preset water temperature, which is generally higher than room temperature. The water purifier can include a water output mechanism 15, which is connected to the second water storage unit 4. Thus, when the user needs cooled boiled water, simply opening the water output mechanism 15 allows the cooled boiled water stored in the second water storage unit 4 to be directly output for the user. The heat exchange device 3 has a first flow channel 31 and a second flow channel 32 that allow heat exchange between the flowing liquid and the heat exchange device 3. The heat exchange device 3 can be any type of heat exchanger in the prior art, and is not limited to it in this application. For example, the heat exchange device 3 may include a first heat exchange tube and a second heat exchange tube passing through the first heat exchange tube. One of a first flow channel 31 and a second flow channel 32 is formed inside the second heat exchange tube, and the other of the first flow channel 31 and the second flow channel 32 is formed between the outer sidewall of the second heat exchange tube and the inner sidewall of the first heat exchange tube. The outlet of the purified water supply unit 1 can be connected to the inlet of the first flow channel 31 via a second pipe 6. The first water storage unit 2 can be connected to the outlet of the first flow channel 31 via a third pipe 7. The first water storage unit 2 can be connected to the inlet of the second flow channel 32 via a fourth pipe 8. The second water storage unit 4 can be connected to the outlet of the second flow channel 32 via a fifth pipe 9.

[0067] The on / off control unit 10 is used to control the connection and disconnection between the outlet of the water purification supply unit 1 and the first pipeline 5, and to control the connection and disconnection between the outlet of the water purification supply unit 1 and the second pipeline 6. In one feasible embodiment, Figure 3 This is a schematic diagram of the on / off control unit in one embodiment of the present invention, as shown below. Figure 3 As shown, the on / off control unit 10 can be a switching valve, such as a two-position three-way solenoid valve with one inlet and two outlets, or a two-position three-way diverter valve. Its inlet is connected to the outlet of the water supply unit 1, one outlet is connected to the first pipeline 5, and the other outlet can be connected to the second pipeline 6. The switching valve has two positions: in one position, the inlet is connected to one outlet and disconnected from the other outlet; in the other position, the inlet is disconnected from one outlet and connected to the other outlet. In another feasible embodiment, Figure 4 This is a schematic diagram of the on / off control unit in another embodiment of the present invention, as shown below. Figure 4 As shown, the on / off control unit 10 includes: a first on / off valve 101 disposed on the second pipeline 6; and a second on / off valve 102 disposed on the first pipeline 5.

[0068] The water purifier may have a water replenishment state for the second water storage unit 4. Alternatively, the water purifier may enter the water replenishment state for the second water storage unit 4 when the water level in the second water storage unit 4 is lower than a preset level; or, the water purifier may enter the water replenishment state for the second water storage unit 4 when the cumulative water extraction time from the second water storage unit 4 exceeds a preset duration.

[0069] The water replenishment state of the second water storage unit 4 includes at least a first stage and a second stage. In the first stage, the on / off control unit 10 controls the outlet of the purified water supply unit 1 to be disconnected from the first pipeline 5, and the outlet of the purified water supply unit 1 to be connected to the second pipeline 6, so that when the purified water supply unit 1 can replenish the first water storage unit 2 with cold purified water output sequentially through the second pipeline 6, the first flow channel 31, and the third pipeline 7, the hot purified water in the first water storage unit 2 is replenished to the second water storage unit 4 sequentially through the fourth pipeline 8, the second flow channel 32, and the fifth pipeline 9. In the second stage, the on / off control unit 10 controls the outlet of the purified water supply unit 1 to be connected to the first pipeline 5, and the outlet of the purified water supply unit 1 to be disconnected from the second pipeline 6, so that when the purified water supply unit 1 can replenish the first water storage unit 2 with cold purified water output through the first pipeline 5, the hot purified water in the first water storage unit 2 is replenished to the second water storage unit 4.

[0070] In the first stage, the water added to the second water storage unit 4 exchanges heat with the water added to the first water storage unit 2 as it flows through the second flow channel 32, thereby achieving a cooling effect. In some cases, this cooling may result in the water temperature in the second water storage unit 4 being lower than the preset water temperature. In the second stage, since the temperature of the hot purified water is much higher than the preset water temperature, the hot purified water added to the second water storage unit 4 in the second stage can neutralize the water added in the first stage, so that the mixed temperature reaches the preset water temperature. Through the above method, the water temperature added to the second water storage unit 4 can directly reach the preset water temperature through the first and second stages, allowing users to obtain cooled boiled water at the preset temperature at any time without any waiting. Secondly, the water purifier only needs one on / off control unit 10 to control the on / off of the outlet of the water supply unit 1 and the first pipeline 5 and the on / off of the outlet of the water supply unit 1 and the second pipeline 6 to make the water added to the second water storage unit 4 reach the preset temperature. There is no need to use a costly proportional valve or an electronic control component that adjusts the duty cycle of the hot water pump and the cold water pump, thus achieving the goal of reducing costs.

[0071] In another feasible implementation, in the first stage, when the water added to the second water storage unit 4 exchanges heat with the water added to the first water storage unit 2 as it flows through the second flow channel 32 to achieve the purpose of cooling, in another possibility, the degree of cooling may cause the temperature of the water added to the second water storage unit 4 to be equal to or higher than the preset water temperature. In this case, the water purifier may not perform the second stage, thereby avoiding the water temperature in the first water storage unit 2 from rising further and causing a bad user experience.

[0072] In one feasible implementation, such as Figure 1 As shown, in the second stage, hot purified water from the first water storage unit 2 is sequentially replenished into the second water storage unit 4 through the fourth pipe 8, the second flow channel 32, and the fifth pipe 9. In another feasible implementation, as... Figure 2As shown, the water purifier may further include a sixth pipe 11. The first water storage unit 2 is connected to the second water storage unit 4 through the sixth pipe 11. In the second stage, hot purified water from the first water storage unit 2 is replenished into the second water storage unit 4 through the sixth pipe 11. In this embodiment, a third on-off valve 16 is installed on the pipe connecting the first water storage unit 2 to the second water storage unit 4 through the fourth pipe 8 and the second flow channel 32. A fourth on-off valve 17 is installed on the sixth pipe 11. In the first stage, the third on-off valve 16 is in the open state and the fourth on-off valve 17 is in the open state; in the second stage, the third on-off valve 16 is in the open state and the fourth on-off valve 17 is in the connected state. Both of these different implementation methods can replenish the second water storage unit 4 with hot purified water from the first water storage unit 2.

[0073] As a feasible approach, the first stage can be executed before the second stage. In this way, during the second stage, the temperature of the cooled boiled water in the second water storage unit 4 can be adjusted by adding hot purified water. Specifically, when the water replenishment process begins, the temperature of the cooled boiled water in the second water storage unit 4 may be lower than the preset temperature. This method ensures that after the water replenishment process is completed, the temperature of the cooled boiled water in the second water storage unit 4 reaches the preset temperature. Furthermore, the first and second stages can be executed sequentially without interruption. Of course, in other feasible embodiments, the second stage can also be executed before the first stage.

[0074] When the water purifier is replenishing water to the second water storage unit 4, it operates in two phases: a first phase lasting for a first duration and a second phase lasting for a second duration. By controlling the different durations of the first and second phases, the temperature of the mixed water can be altered, thereby achieving the preset water temperature. Specifically, in the first phase, the outlet of the purified water supply unit 1 is connected to the first pipe 5 for the first duration, while the outlet of the purified water supply unit 1 is disconnected from the second pipe 6 for the same duration. In the second phase, the outlet of the purified water supply unit 1 is connected to the second pipe 6 for the second duration, while the outlet of the purified water supply unit 1 is disconnected from the first pipe 5 for the same duration. By changing the amounts of cooled purified water and hot purified water replenished to the second water storage unit 4 in the first and second phases respectively, the temperature of the mixed water can be altered, thereby achieving the preset water temperature.

[0075] To ensure the mixed water reaches the preset temperature, the cooled purified water added to the second water storage unit 4 in the first stage needs to be below the preset temperature. Since the water added to the second water storage unit 4 exchanges heat with the water added to the first water storage unit 2 as it flows through the second flow channel 32, thus achieving cooling, the temperature of the water added to the first water storage unit 2 needs to be below the preset temperature. Therefore, the temperature of the water flowing into or out of the purified water supply unit 1 needs to be below the preset temperature. Furthermore, the first and second stages can be performed alternately. This allows the cooled purified water and hot purified water added to the second water storage unit 4 in the first and second stages respectively to mix immediately or even before entering the second water storage unit 4. This ensures that the water temperature in all locations within the second water storage unit 4 is as uniform as possible, avoiding temperature stratification or regional variations.

[0076] Since the water in the second water storage unit 4 needs to be kept at a preset temperature that is generally drinkable and its temperature will not be too high, the first time is longer than the second time. In the second stage, only a small amount of hot purified water needs to be added.

[0077] During the alternation of the first and second stages, the first duration is positively correlated with the temperature of the water flowing into or out of the purified water supply unit 1. During the alternation of the first and second stages, the second duration is negatively correlated with the temperature of the water flowing into or out of the purified water supply unit 1. During the alternation of the first and second stages, the ratio of the first duration to the second duration is positively correlated with the temperature of the water flowing into or out of the purified water supply unit 1.

[0078] Optionally, the water purifier may include: a first temperature detection component 12, used to acquire the temperature of water flowing into or out of the purified water supply unit 1; a second temperature detection component 13, used to detect the temperature of water in or out of the first water storage unit 2; or, the water purifier stores a preset temperature of water in or out of the first water storage unit 2; and a third temperature detection component 14, used to detect the temperature of water in or out of the second water storage unit 4; or, the water purifier stores a preset temperature of water in or out of the second water storage unit 4.

[0079] The water purifier may include a control unit. When the water purifier includes a first temperature detection component 12, a second temperature detection component 13, and a third temperature detection component 14, the control unit is electrically connected to the first temperature detection component 12, the second temperature detection component 13, the third temperature detection component 14, the first on / off valve 101, and the second on / off valve 102, respectively. Alternatively, the control unit may control the on / off control unit 10 based on the temperature of the water flowing into or out of the purified water supply unit 1 as measured by the first temperature detection component 12, the temperature of the water in or out of the first water storage unit 2 as measured by the second temperature detection component 13, and the temperature of the water in or out of the second water storage unit 4 as measured by the third temperature detection component 14.

[0080] In the above embodiment, when the water purifier is in the state of replenishing water to the second water storage unit 4, only one of the following is needed: the second temperature detection component 13 or the preset water temperature stored in the water purifier in the first water storage unit 2 or the water temperature flowing out of the first water storage unit 2. Since the water temperature in the first water storage unit 2 can be continuously heated and maintained at the preset water temperature stored in the water purifier or the water temperature flowing out of the first water storage unit 2, for example, heated and maintained at a boiling or near-boiling temperature, it is not necessary for the second temperature detection component 13 to obtain the water temperature in the first water storage unit 2 at this time; the preset water temperature stored in the water purifier or the water temperature flowing out of the first water storage unit 2 can be used directly. Similarly, when the water purifier is in the state of replenishing water to the second water storage unit 4, only one of the following is needed: the third temperature detection component 14 or the preset water temperature stored in the water purifier in the second water storage unit 4 or the water temperature flowing out of the second water storage unit 4. Since the water in the second water storage unit 4 can be kept at the preset water temperature stored in the water purifier or the water temperature flowing out of the second water storage unit 4, it is not necessary to obtain the water temperature in the second water storage unit 4 at this time through the third temperature detection component 14. The preset water temperature stored in the second water storage unit 4 or the water temperature flowing out of the second water storage unit 4 can be used directly.

[0081] When the first stage is executed for a first duration and the second stage is executed for a second duration, the ratio of the first duration to the second duration can be determined by the temperature of the water flowing into or out of the water supply unit 1, the temperature of the water in or out of the first water storage unit 2, and the temperature of the water in or out of the second water storage unit 4. This ensures that after the water purifier completes the water replenishment process for the second water storage unit 4, the temperature of the water added to the second water storage unit 4 in both the first and second stages is equal to the temperature of the water in or out of the second water storage unit 4, i.e., the preset water temperature.

[0082] When the first stage executes for a first duration and the second stage executes for a second duration, the water purifier can directly store a preset second duration. Therefore, only the first duration needs to be calculated. This ensures that after the water purifier completes the water replenishment process for the second water storage unit 4, the temperature of the water added to the second water storage unit 4 during both the first and second stages is equal to the temperature of the water in or out of the second water storage unit 4, i.e., the preset water temperature. In this embodiment, the first duration is determined by the temperature of the water flowing into or out of the purified water supply unit 1, the temperature of the water in or out of the first water storage unit 2, the temperature of the water in or out of the second water storage unit 4, and the preset second duration.

[0083] When the water purifier includes a first temperature detection component 12 and a third temperature detection component 14, and the water purifier stores a preset water temperature in the first water storage unit 2 or the water temperature flowing out of the first water storage unit 2, the control unit is electrically connected to the first temperature detection component 12, the third temperature detection component 14, and the on / off control unit 10, respectively. The control unit can control the on / off control unit 10 based on the water temperature flowing into or out of the purified water supply unit 1 measured by the first temperature detection component 12, the preset water temperature in the first water storage unit 2 or the water temperature flowing out of the first water storage unit 2, and the water temperature in the second water storage unit 4 or the water temperature flowing out of the second water storage unit 4 measured by the third temperature detection component 14.

[0084] When the water purifier includes a first temperature detection component 12 and a second temperature detection component 13, and the water purifier stores a preset water temperature in a second water storage unit 4 or the water temperature flowing out of the second water storage unit 4, the control unit is electrically connected to the first temperature detection component 12, the second temperature detection component 13, and the on / off control unit 10, respectively. The control unit controls the on / off control unit 10 based on the water temperature flowing into or out of the purified water supply unit 1 measured by the first temperature detection component 12, the water temperature in or out of the first water storage unit 2 measured by the second temperature detection component 13, and the preset water temperature in or out of the second water storage unit 4.

[0085] When the water purifier includes a first temperature detection component 12, a preset water temperature stored in the first water storage unit 2 or the water temperature flowing out of the first water storage unit 2, and a preset water temperature stored in the second water storage unit 4 or the water temperature flowing out of the second water storage unit 4, the control unit is electrically connected to the first temperature detection component 12 and the on / off control unit 10, respectively. The control unit can control the on / off control unit 10 based on the water temperature flowing into or out of the purified water supply unit 1 measured by the first temperature detection component 12, the preset water temperature stored in or out of the first water storage unit 2, and the preset water temperature stored in or out of the second water storage unit 4.

[0086] In the above-mentioned embodiments, the temperature of the water flowing into or out of the water purification supply unit 1 may vary due to different seasons. The water purifier can adjust the ratio of the first duration and the second duration, the first duration, etc. in real time according to the temperature of the water flowing into or out of the water purification supply unit 1 obtained by the first temperature detection component 12. This allows the temperature of the water added to the second water storage unit 4 to more accurately approach or reach the preset water temperature through the first stage and the second stage.

[0087] In the above-described embodiments, as feasible, the ratio of the first duration to the second duration or the first duration can be roughly calculated using the following formula, wherein the relationship between the first duration of the first on / off valve 101 and the second duration of the second on / off valve 102 satisfies: Wherein, V1 represents the first duration of the first on / off valve 101, V2 represents the second duration of the second on / off valve 102, T1 represents the temperature of the water flowing into or out of the purified water supply unit 1 as measured by the first temperature detection component 12, and T2 represents the temperature of the water in or out of the first water storage unit 2. The above calculation process treats the entire water purifier as a whole and is an approximate calculation. The above calculation process is particularly applicable to the implementation in the second stage, where hot purified water in the first water storage unit 2 is sequentially replenished into the second water storage unit 4 through the fourth pipe 8, the second flow channel 32, and the fifth pipe 9. In the second stage, the hot purified water flowing out of the first water storage unit 2 is cooled by the heat exchange device 3. Therefore, when it flows into the second water storage unit 4, it is no longer at the preset water temperature of the first water storage unit 2 or the water temperature flowing out of the first water storage unit 2. In the first stage, the hot purified water flowing out of the first water storage unit 2 is cooled by the heat exchange device 3, and the purified water output from the purified water supply unit 1 is heated by the heat exchange device 3 before entering the first water storage unit 2. Therefore, when the entire water purifier is considered as a whole, the effects of these two stages on the water temperature in the second water storage unit 4 or the water temperature flowing out of the second water storage unit 4 can be largely canceled out, thus forming the above approximate calculation.

[0088] In the above-described embodiments, other more precise calculation methods can also be used to calculate the ratio of the first duration to the second duration or the first duration itself. Alternatively, tests with different parameters can be conducted in advance based on the specific performance of the heat exchange device 3 to obtain the correspondence between different parameters. This correspondence can be stored in the water purifier. Then, during actual use of the water purifier, the control unit can directly calculate the ratio of the first duration to the second duration or the first duration based on the temperature of the water flowing into or out of the water supply unit 1, the temperature of the water in or out of the first water storage unit 2, and the temperature of the first water storage unit 2. The ratio of the first duration to the second duration can be obtained by looking up the water temperature in the second water storage unit 4 or the water temperature flowing out of the second water storage unit 4 in the corresponding relationship. Alternatively, the first duration can be obtained by looking up the water temperature flowing into or out of the purified water supply unit 1, the water temperature in or out of the first water storage unit 2, the water temperature in or out of the second water storage unit 4, and the second duration in the corresponding relationship. Finally, the first on / off valve 101 and the second on / off valve 102 are controlled.

[0089] In the above-described embodiments, the control unit can control the first stage and the second stage to be executed alternately. After the first stage is executed for a first duration, the second stage is executed, and the second stage is executed for a second duration. Further, in the first stage, the control unit controls the outlet of the water purification supply unit 1 to be connected to the second pipeline 6 for a first duration, and then disconnects the outlet of the water purification supply unit 1 from the first pipeline 6 for a first duration; in the second stage, the control unit controls the outlet of the water purification supply unit 1 to be connected to the first pipeline 6 for a second duration, and then disconnects the outlet of the water purification supply unit 1 from the second pipeline 6 for a second duration.

[0090] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0091] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A water purifier, characterized in that, The water purifier includes: Water purification supply unit; A first water storage unit and a heating unit for heating the purified water in the first water storage unit; A heat exchange device having a first flow channel and a second flow channel that enable heat exchange of a flowing liquid; Second water storage unit; The first pipeline connects the outlet of the purified water supply unit to the first water storage unit. The outlet of the water purification supply unit is connected to the inlet of the first flow channel through the second pipeline; The third pipeline connects the first water storage unit to the outlet of the first flow channel. The fourth pipeline connects the first water storage unit to the inlet of the second flow channel. The fifth pipeline connects the second water storage unit to the outlet of the second flow channel. An on / off control unit is used to control the on / off connection between the outlet of the water supply unit and the first pipeline and to control the on / off connection between the outlet of the water supply unit and the second pipeline. The water purifier has a second water storage unit replenishment state, which includes at least a first stage and a second stage. In the first stage, the on / off control unit controls the outlet of the purified water supply unit to be disconnected from the first pipeline, and the outlet of the purified water supply unit to be connected to the second pipeline, so that when the purified water supply unit can replenish the first water storage unit with cold purified water output sequentially through the second pipeline, the first flow channel, and the third pipeline, hot purified water in the first water storage unit is replenished to the second water storage unit sequentially through the fourth pipeline, the second flow channel, and the fifth pipeline. In the second stage, the on / off control unit controls the outlet of the purified water supply unit to be connected to the first pipeline, and the outlet of the purified water supply unit to be disconnected from the second pipeline, so that when the purified water supply unit can replenish the first water storage unit with cold purified water output through the first pipeline, hot purified water in the first water storage unit is replenished to the second water storage unit.

2. The water purifier according to claim 1, characterized in that, In the second stage, hot purified water from the first water storage unit is sequentially replenished into the second water storage unit through the fourth pipeline, the second flow channel, and the fifth pipeline.

3. The water purifier according to claim 1, characterized in that, The water purifier also includes a sixth pipeline, through which the first water storage unit is connected to the second water storage unit. In the second stage, hot purified water in the first water storage unit is replenished into the second water storage unit through the sixth pipeline.

4. The water purifier according to claim 1, characterized in that, The first phase lasts for a first duration, and the second phase lasts for a second duration.

5. The water purifier according to claim 4, characterized in that, In the first stage, the outlet of the water purification unit is disconnected from the first pipeline for the first duration, and the outlet of the water purification unit is connected to the second pipeline for the first duration. In the second stage, the outlet of the water purification unit is disconnected from the second pipeline for the second duration, and the outlet of the water purification unit is connected to the first pipeline for the second duration.

6. The water purifier according to claim 4, characterized in that, When the temperature of the water flowing into or out of the water supply unit is lower than a preset temperature, the first stage and the second stage are executed alternately.

7. The water purifier according to claim 6, characterized in that, The first duration is longer than the second duration.

8. The water purifier according to claim 6, characterized in that, The first duration is positively correlated with the temperature of the water flowing into or out of the water purification supply unit.

9. The water purifier according to claim 6, characterized in that, The second duration is negatively correlated with the temperature of the water flowing into or out of the water purification supply unit.

10. The water purifier according to claim 6, characterized in that, The ratio of the first duration to the second duration is positively correlated with the temperature of the water flowing into or out of the water purification supply unit.

11. The water purifier according to claim 1, characterized in that, The first phase is executed before the second phase.

12. The water purifier according to claim 6, characterized in that, The first stage and the second stage are executed sequentially without interruption.

13. The water purifier according to claim 1, characterized in that, When the water level in the second water storage unit is lower than the preset level, the water purifier enters the water replenishment state of the second water storage unit; or, when the cumulative water extraction time from the second water storage unit exceeds the preset duration, the water purifier enters the water replenishment state of the second water storage unit.

14. The water purifier according to claim 4, characterized in that, The water purifier also includes: A first temperature detection component is used to obtain the temperature of water flowing into or out of the water purification supply unit. The second temperature detection component is used to detect the water temperature in the first water storage unit or the water temperature flowing out of the first water storage unit; or, the water purifier stores a preset water temperature in the first water storage unit or the water temperature flowing out of the first water storage unit. A third temperature detection component is used to detect the water temperature in the second water storage unit or the water temperature flowing out of the second water storage unit; or, the water purifier stores a preset water temperature in the second water storage unit or the water temperature flowing out of the second water storage unit.

15. The water purifier according to claim 14, characterized in that, The ratio of the first duration to the second duration is determined by the temperature of the water flowing into or out of the purified water supply unit, the temperature of the water in or out of the first water storage unit, and the temperature of the water in or out of the second water storage unit.

16. The water purifier according to claim 10 or 14, characterized in that, The water purifier stores a preset second duration.

17. The water purifier according to claim 16, characterized in that, The first duration is determined by the temperature of the water flowing into or out of the purified water supply unit, the temperature of the water in or out of the first water storage unit, the temperature of the water in or out of the first water storage unit, the temperature of the water in or out of the second water storage unit, and a preset second duration.

18. The water purifier according to claim 14, characterized in that, The water purifier also includes a control unit, which is electrically connected to the first temperature detection component, the second temperature detection component, the third temperature detection component, and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit as measured by the first temperature detection component, the temperature of the water in or out of the first water storage unit as measured by the second temperature detection component, and the temperature of the water in or out of the second water storage unit as measured by the third temperature detection component.

19. The water purifier according to claim 14, characterized in that, The water purifier also includes a control unit, which is electrically connected to the first temperature detection component, the third temperature detection component, and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit as measured by the first temperature detection component, the water temperature in the first water storage unit stored in the water purifier or the water temperature flowing out of the first water storage unit, and the water temperature in the second water storage unit or the water temperature flowing out of the second water storage unit as measured by the third temperature detection component.

20. The water purifier according to claim 14, characterized in that, The water purifier also includes a control unit, which is electrically connected to the first temperature detection component, the second temperature detection component, and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the purified water supply unit as measured by the first temperature detection component, the temperature of the water in or out of the first water storage unit as measured by the second temperature detection component, and the preset temperature of the water in or out of the second water storage unit stored in the water purifier.

21. The water purifier according to claim 14, characterized in that, The water purifier also includes a control unit, which is electrically connected to the first temperature detection component and the on / off control unit. The control unit controls the on / off control unit based on the temperature of the water flowing into or out of the water supply unit as measured by the first temperature detection component, the water temperature stored in or out of the first water storage unit in the water purifier (which is preset), and the water temperature stored in or out of the second water storage unit in the water purifier (which is preset).

22. The water purifier according to any one of claims 18 to 21, characterized in that, The control unit controls the first stage and the second stage to be executed alternately. After the first stage is executed for the first duration, the second stage is executed, and the second stage is executed for the second duration.

23. The water purifier according to claim 22, characterized in that, In the first stage, the control unit controls the on / off control unit to connect the outlet of the water purification unit to the second pipeline for the first duration, and disconnect the outlet of the water purification unit from the first pipeline for the first duration. In the second stage, the control unit controls the outlet of the water purification supply unit to be connected to the first pipeline for the second duration, and the outlet of the water purification supply unit to be disconnected from the second pipeline for the second duration.

24. The water purifier according to claim 1, characterized in that, The heat exchange device includes a first heat exchange tube and a second heat exchange tube passing through the first heat exchange tube. One of the first flow channel and the second flow channel is formed inside the second heat exchange tube, and the other of the first flow channel and the second flow channel is formed between the outer side wall of the second heat exchange tube and the inner side wall of the first heat exchange tube.

25. The water purifier according to claim 1, characterized in that, The water purifier also includes a water output mechanism, which is connected to the second water storage unit.

26. The water purifier according to claim 1, characterized in that, The on / off control unit includes: A first on / off valve is installed on the second pipeline or the third pipeline; A second on / off valve is installed on the first pipeline.

27. The water purifier according to claim 1, characterized in that, The on / off control unit includes: a two-position three-way solenoid valve with one inlet and two outlets or a two-position three-way directional valve.

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