Hot water path, water production system and drinking equipment

Abstract

The utility model provides a hot water path, a water making system and drinking water equipment. The hot water path comprises a pipeline switching device, a first branch pipe, a second branch pipe, a hot water outlet pipe, a water preheating device and an instant heating device, two ends of the first branch pipe are respectively connected with a first water outlet of the pipeline switching device and a water inlet end of the hot water outlet pipe; the two ends of the second branch pipe are connected with a second water outlet of the pipeline switching device and the water inlet end of the hot water outlet pipe respectively. The water preheating device is arranged on the second branch pipe, and the instant heating device is arranged on the hot water outlet pipe. When high-temperature hot water needs to be prepared, the hot water channel can be switched to the water outlet branch with the water preheating device to increase the water temperature and then conduct instant heating, the time needed for instant heating of water flow to the target temperature can be shortened, water flow of the hot water outlet pipe can be faster, and therefore the water yield of the hot water can be larger.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking water equipment, in particular to a hot water circuit, a water production system and drinking water equipment. Background Art

[0002] As people's living standards improve, they are paying more and more attention to water quality and hygiene, and equipping households with drinking water equipment has become a trend. Although existing instant water heaters heat water immediately after use, avoiding the problem of boiling water in storage tanks, they have the following pain points due to the instant heating principle and power limitations. Drinking water products that use instant heating are limited by the current of the household power supply, and therefore the heating power is limited. The actual flow rate when boiling water is small, and the water output experience is poor.

[0003] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0004] The utility model provides a hot water circuit, a water production system and drinking water equipment, aiming to solve the technical problems mentioned in the background art of the existing drinking water equipment.

[0005] The technical solution of the utility model is as follows:

[0006] The first aspect of the present invention provides a hot water circuit, comprising a pipe switching device, a first branch pipe, a second branch pipe, a hot water outlet pipe, a water preheating device, and an instant heating device; the pipe switching device comprises a water inlet, a first water outlet, and a second water outlet:

[0007] The water inlet of the pipeline switching device is connected to the first water inlet pipe, the first end of the first branch pipe is connected to the first water outlet of the pipeline switching device, and the second end of the first branch pipe is connected to the water inlet end of the hot water outlet pipe;

[0008] The first end of the second branch pipe is connected to the second water outlet of the pipeline switching device, and the second end of the second branch pipe is connected to the water inlet end of the hot water outlet pipe;

[0009] The water preheating device is arranged on the second branch pipe, and the instant heating device is arranged on the hot water outlet pipe.

[0010] In some optional embodiments of the first aspect of the present invention, a first pipeline on-off control component is provided on the first water inlet pipe, and a first pumping device is provided on the first water inlet pipe between the first pipeline on-off control component and the pipeline switching device.

[0011] In some optional embodiments of the first aspect of the present invention, the hot water circuit further includes a second pipeline on-off control component, a return pipe, and a third pipeline on-off control component; the second pipeline on-off control component is disposed at the water outlet end of the hot water outlet pipe;

[0012] The first end of the return pipe is connected to the first water inlet pipe between the first pumping device and the first pipeline on-off control component, and the second end of the return pipe is connected to the hot water outlet pipe between the instant heating device and the second pipeline on-off control component;

[0013] The third pipeline on-off control component is arranged on the reflux pipe.

[0014] In some optional embodiments of the first aspect of the present invention, the first pipeline on-off control component includes a negative pressure valve, which is used to control the conduction of the first water inlet pipe when the first water inlet pipe connected to the return pipe is under negative pressure after the first pumping device is started.

[0015] In some optional embodiments of the first aspect of the present invention, the water preheating device includes a storage tank, a heat storage medium disposed in the storage tank, and a heating element for heating the heat storage medium.

[0016] The second aspect of the present invention provides a water production system, comprising the hot water circuit described in any one of the first aspect of the present invention; and one or more of a normal temperature water circuit, a cold water circuit, and a normal temperature / cold water combination circuit.

[0017] In some optional embodiments of the second aspect of the present invention, the normal temperature / cold water combination water circuit includes a common water inlet pipe, a common water outlet pipe, a normal temperature water branch pipe, a cold water branch pipe, a fourth pipeline on-off control component, a fifth pipeline on-off control component, a refrigerated water device, and a first pipeline check member;

[0018] The first end of the normal temperature water branch pipe is connected to the water outlet end of the common water inlet pipe, the second end of the normal temperature water branch pipe is connected to the water inlet end of the common water outlet pipe, and the fourth pipeline on-off control component is provided on the normal temperature water branch pipe;

[0019] The first end of the cold water branch pipe is connected to the water outlet end of the common water inlet pipe, the second end of the cold water branch pipe is connected to the water inlet end of the common water outlet pipe, and the fifth pipeline on-off control component, the refrigeration water device and the first pipeline check component are all arranged on the cold water branch pipe.

[0020] In some optional embodiments of the second aspect of the present invention, the normal temperature / cold water combination water circuit further includes a drain pipe, a sixth pipeline on-off control component, a second pumping device, and a second pipeline check member;

[0021] The first end of the drain pipe is connected to the drain outlet of the cooling water device, and the sixth pipeline on-off control component, the second pumping device and the second pipeline check component are all arranged on the drain pipe.

[0022] A third aspect of the present invention provides a drinking water device, comprising the water production system described in any one of the second aspects of the present invention.

[0023] In some optional implementations of the third aspect of the present utility model, the drinking water equipment further includes a water purification device, and the water purification device is used to provide filtered source water for the water production system.

[0024] Beneficial effects are as follows: the present invention provides a hot water circuit, a water production system, and a drinking water device, wherein the hot water circuit includes a pipeline switching device, a first branch pipe, a second branch pipe, a hot water outlet pipe, a water preheating device, and an instant heating device; the two ends of the first branch pipe are respectively connected to the first water outlet of the pipeline switching device and the water inlet end of the hot water outlet pipe; the two ends of the second branch pipe are respectively connected to the second water outlet of the pipeline switching device and the water inlet end of the hot water outlet pipe; the water preheating device is arranged on the second branch pipe, and the instant heating device is arranged on the hot water outlet pipe. When high-temperature hot water is required to be produced, the hot water circuit of the present invention can be switched to the outlet branch with a water preheating device to increase the water temperature before instant heating. The time required for instant heating of the water flow to the target temperature can be shortened, the water flow in the hot water outlet pipe can be faster, and thus the hot water output can be greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of a hot water circuit of the utility model.

[0026] Figure 2 This is a structural schematic diagram of a water preheating device of the present utility model.

[0027] Figure 3 This is a structural schematic diagram of another hot water circuit of the present utility model.

[0028] Figure 4 This is a structural diagram of a water production system of the present utility model.

[0029] Figure 5 This is a structural schematic diagram of a normal temperature / cold water combined water circuit of the utility model.

[0030] Figure 6 This is a structural diagram of a drinking water device of the present utility model.

[0031] Figure 7 This is a structural schematic diagram of a water purification device of the present utility model.

[0032] The reference numerals in the figures are as follows:

[0033] 10-Pipeline switching device; 20-First branch pipe; 30-Second branch pipe; 40-Hot water outlet pipe; 50-Water preheating device; 60-Instantaneous heating device; 70-Storage tank; 80-Heating element; 90-Fluid replenishment pipe; 100-Overflow pipe; 110-Second pipeline on-off control element; 120-Return pipe; 130-Third pipeline on-off control element; 140-First pumping device; 150-First water inlet pipe; 160-First pipeline on-off control element; 170-Common water inlet pipe; 180-Common water outlet pipe; 190-Normal temperature water branch pipe; 200-Cold water branch pipe; 210-First Four-pipeline on-off control components; 220-fifth pipeline on-off control component; 230-refrigeration water device; 240-first pipeline check piece; 250-drain pipe; 260-sixth pipeline on-off control component; 270-second pumping device; 280-second pipeline check piece; 290-water purification device; 300-pre-filter element; 310-membrane filter element; 320-liquid replenishment on-off control component; 330-water supply pipe; 340-flow meter; 350-water intake pipe; 360-connecting pipe; 370-water inlet solenoid valve; 380-boosting pump; 390-waste water pipe; 400-waste water pipe on-off control component. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] It should be noted in advance that in the following description of the present invention, if there are terms, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0037] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0038] See also Figure 1 In a first aspect, the present invention provides a hot water circuit, comprising a pipeline switching device 10, a first branch pipe 20, a second branch pipe 30, a hot water outlet pipe 40, a water preheating device 50 and an instant heating device 60, wherein the pipeline switching device 10 comprises a water inlet, a first water outlet and a second water outlet; in the present invention, the pipeline switching device 10 can be a single valve body or a combination of multiple valve bodies and pipelines, wherein the single valve body comprises a multi-way valve such as a three-way valve and a four-way valve, and the combination comprises a plurality of pipelines having a common water inlet but different water outlets and a control valve arranged on each pipeline. The pipeline switching device 10 has at least two water outlet branches that share a water inlet. The first branch pipe 20, the second branch pipe 30 and the hot water outlet pipe 40 can be a hose or a hard pipe. The hose includes a plastic pipe, and the hard pipe includes a metal pipe. The pipelines described later in the present invention can also be hoses or hard pipes. The materials of the hoses and hard pipes can also be the same as those in the examples of the first branch pipe 20, the second branch pipe 30 and the hot water outlet pipe 40. The following description of the instant heating device 60 is not repeated in detail. The instant heating device 60 can be an instant heating pipe or a heating strip, heating wire or heating rod can be directly arranged in the pipeline that requires instant heating.

[0039] See also Figure 1 In the first aspect of the present invention, the water inlet of the pipeline switching device 10 is connected to the first water inlet pipe 150, the first end of the first branch pipe 20 is connected to the first water outlet of the pipeline switching device 10, and the second end of the first branch pipe 20 is connected to the water inlet end of the hot water outlet pipe 40; the first end of the second branch pipe 30 is connected to the second water outlet of the pipeline switching device 10, and the second end of the second branch pipe 30 is connected to the water inlet end of the hot water outlet pipe 40; in the present invention, the first branch pipe 20 and the second branch pipe 30 can be regarded as two pipelines connected in parallel between the pipeline switching device 10 and the hot water outlet pipe 40, and the main function of the pipeline switching device 10 is to select one of the first branch pipe 20 and the second branch pipe 30 to be connected each time.

[0040] See also Figure 1In the first aspect of the present invention, the water preheating device 50 is arranged on the second branch pipe 30, and the instant heating device 60 is arranged on the hot water outlet pipe 40. In the present invention, the meaning of the water preheating device 50 being arranged on the second branch pipe 30 can be understood as the second branch pipe 30 is divided into two sections, and the water preheating device 50 is connected between the two sections of the second branch pipe 30. The same scenario will be described later where devices or components are arranged on the pipeline. The hot water circuit of the present invention has two branches. The first hot water making branch composed of the first branch pipe 20, the hot water outlet pipe 40 and the instant heating device 60 is mainly used to produce low-temperature hot water (for example, hot water below a preset temperature (the value range can be 40-80°C, for example, 60°C)). The second hot water production branch, consisting of the second branch pipe 30, the water preheating device 50, the hot water outlet pipe 40, and the instant heating device 60, is primarily used to produce high-temperature hot water (e.g., hot water above a preset temperature). Since the water in the second hot water production branch of the present invention is preheated by the water preheating device 50, the initial water temperature flowing into the instant heating device 60 is higher. Under the condition of a certain power of the instant heating device 60, the water flow time required in the instant heating device 60 is shorter, and the flow rate can be controlled faster, thereby increasing the output of high-temperature hot water produced by the hot water pipeline. Of course, in the present invention, the water preheating device 50 is disposed on the first branch pipe 20. In this case, the functions of the first branch pipe 20 and the second branch pipe 30 are interchangeable.

[0041] In the first aspect of the present invention, the function of the water preheating device 50 is, as the name implies, to preheat the water flowing into the instant heating device 60. The water preheating device 50 can be a direct heating device or a heat exchange heating device. The direct heating device can be, for example, an electric heating wire, an electric heating rod, and an electric heating tube, and the heat exchange heating device can be, for example, a heat exchanger. Figure 2 In an exemplary heat exchanger structure of the present invention, the water preheating device 50 includes a storage tank 70, a heat storage medium (including a solid heat storage medium, such as metals such as iron and copper) and a liquid heat storage medium (such as water, oil and molten salt, etc.) arranged in the storage tank 70, and a heating element 80 for heating the heat storage medium. The above example is the simplest water preheating device 50 structure of the present invention. In other embodiments of the utility model, in order to increase the heat exchange area between the second branch pipe 30 and the water preheating device 50, the second branch pipe 30 can be formed into a coil shape in the water preheating device 50. In order to facilitate temperature control, the water preheating device 50 can also be provided with a temperature detection sensor and a temperature controller. See Figure 2 When the heat storage medium of the water preheating device 50 is a liquid medium, the storage tank 70 is connected to a liquid replenishing pipe 90 and an overflow pipe 100 .

[0042] See also Figure 3 In some optional embodiments of the first aspect of the present invention, a first pipeline on-off control component 160 is provided on the first water inlet pipe 150, and a first pumping device 140 is provided on the first water inlet pipe 150 between the first pipeline on-off control component 160 and the pipeline switching device 10. In the present invention, the first pumping device 140 can be a water pump. The first pumping device 140 has two functions: one is to drive the water in the return pipe 120 to reflux when the return pipe 120 is enabled, and the other function is to introduce source water into the pipeline switching device 10 through the first water inlet pipe 150. The function of the first pipeline on-off control component 160 is to control the on-off of water inflow into the first water inlet pipe 150.

[0043] See also Figure 3 In some optional embodiments of the first aspect of the present invention, the hot water circuit also includes a second pipeline on-off control component 110, a return pipe 120 and a third pipeline on-off control component 130; the second pipeline on-off control component 110 is arranged at the water outlet end of the hot water outlet pipe 40; the first end of the return pipe 120 is connected to the first water inlet pipe 150 between the first pumping device 140 and the first pipeline on-off control component 160, and the second end of the return pipe 120 is connected to the hot water outlet pipe 40 between the instant heating device 60 and the second pipeline on-off control component 110; the third pipeline on-off control component 130 is arranged on the return pipe 120. In the present invention, the second pipeline on-off control member 110 and the third pipeline on-off control member 130 can be control valves, and the control valves include solenoid valves, pneumatic valves and hydraulic valves. All pipeline on-off control members described later in the present invention can also be solenoid valves, pneumatic valves and hydraulic valves, and will not be described in detail later. The return pipe 120 can also be a hose or a hard pipe. In this embodiment of the present invention, if the hot water passing through the instant heating device 60 is not heated to the target water outlet temperature, the second pipeline on-off control member 110 can be closed and the third pipeline on-off control member 130 can be opened. The on-off control component 130 allows the hot water to be reheated through the first hot water making branch or the second hot water making branch until the hot water flowing out of the instant heating device 60 reaches the target water outlet temperature, and then the second pipeline on-off control component 110 is opened and the third pipeline on-off control component 130 is closed to allow the hot water to flow out. In this embodiment of the present invention, in order to facilitate temperature detection, a temperature detection sensor can be provided at the water outlet of the instant heating device 60 or in the hot water outlet pipe 40 between the second pipeline on-off control component 110 and the instant heating device 60.

[0044] In some optional embodiments of the first aspect of the present invention, the first pipeline on-off control component 160 includes a negative pressure valve, which is used to control the conduction of the first water inlet pipe 150 when the first pumping device 140 is started and the first water inlet pipe 150 connected to the return pipe 120 is under negative pressure. Simply put, in the present invention, when the first pumping device 140 is not started, water will be stored in the first water inlet pipe 150 at the rear section connected to the return pipe 120 and in the return pipe 120, so that a positive pressure is formed on the water outlet side of the negative pressure valve. When the first pumping device 140 is started, the water in the first water inlet pipe 150 at the rear section connected to the return pipe 120 and in the return pipe 120 will flow away, so that a negative pressure will be formed on the water outlet side of the negative pressure valve. Under the impact of the water flow on the water inlet side, the first water inlet pipe 150 will automatically open. The present invention uses the negative pressure valve on the first water inlet pipe 150 to reduce the difficulty of controlling the pipeline, and the flow rate of the first water inlet pipe 150 depends on the flow rate on the water source side, and can also achieve precise control of the water intake.

[0045] The second aspect of the present invention provides a water production system, comprising the hot water waterway described in any one of the first aspects of the present invention; and one or more of a normal temperature waterway, a cold waterway, and a normal temperature / cold water combination waterway. Exemplarily, the combination scenario of the water production system of the present invention may be as follows: the water production system comprises the hot water waterway and the normal temperature waterway described in any one of the first aspects of the present invention, the water production system comprises the hot water waterway and the cold waterway described in any one of the first aspects of the present invention, the water production system comprises the hot water waterway, the normal temperature waterway, and the cold waterway described in any one of the first aspects of the present invention, or the water production system comprises the hot water waterway and the normal temperature / cold water combination waterway described in any one of the first aspects of the present invention (for example, Figure 4 shown).

[0046] See also Figure 5In some optional embodiments of the second aspect of the present invention, the normal temperature / cold water combination water circuit includes a common water inlet pipe 170, a common water outlet pipe 180, a normal temperature water branch pipe 190, a cold water branch pipe 200, a fourth pipeline on-off control component 210, a fifth pipeline on-off control component 220, a refrigerated water device 230 and a first pipeline check member 240; the common water inlet pipe 170, the common water outlet pipe 180, the normal temperature water branch pipe 190 and the cold water branch pipe 200 can also be a hose and a hard pipe, and the materials used for the hose and the hard pipe can be the same as those used in the first aspect of the present invention. The pipe materials mentioned in the above aspects are the same, and the types of the fourth pipeline on-off control component 210 and the fifth pipeline on-off control component 220 are also the same as the relevant pipeline on-off control components mentioned in the first aspect of the present invention. The present invention will not go into details here. The cooling water device 230 can be a compressor cooling water device 230 (for example, a cold water tank with a compressor, a condenser and an evaporator as refrigeration components) or a semiconductor cooling water device 230 (for example, an electronic ice tank), and the first pipeline check valve 240 can be a check valve or other devices with a pipeline check effect.

[0047] See also Figure 5 In the normal temperature / cold water combination water circuit of the second aspect of the present invention, the first end of the normal temperature water branch pipe 190 is connected to the water outlet end of the common water inlet pipe 170, and the second end of the normal temperature water branch pipe 190 is connected to the water inlet end of the common water outlet pipe 180, and the fourth pipeline on-off control component 210 is arranged on the normal temperature water branch pipe 190; the function of the fourth pipeline on-off control component 210 is to control the conduction and closing of the normal temperature water branch pipe 190.

[0048] See also Figure 5 In the normal temperature / cold water combination water circuit of the second aspect of the present invention, the first end of the cold water branch pipe 200 is connected to the water outlet end of the common water inlet pipe 170, and the second end of the cold water branch pipe 200 is connected to the water inlet end of the common water outlet pipe 180, and the fifth pipeline on-off control component 220, the refrigerated water device 230 and the first pipeline check component 240 are all arranged on the cold water branch pipe 200. In the present invention, the arrangement order of the fifth pipeline on-off control component 220, the refrigerated water device 230 and the first pipeline check member 240 on the cold water branch 200 can be the fifth pipeline on-off control component 220, the refrigerated water device 230 and the first pipeline check member 240 from the first end to the second end of the cold water branch 200, or the refrigerated water device 230, the fifth pipeline on-off control component 220 and the first pipeline check member 240. In the present invention, the main function of the fifth pipeline on-off control component 220 is to control the conduction and closing of the cold water branch 200.

[0049] See also Figure 5 In the normal temperature / cold water combination water circuit of the second aspect of the present invention, the normal temperature / cold water combination water circuit may also include a drain pipe 250, a sixth pipeline on-off control component 260, a second pumping device 270 and a second pipeline check member 280; the first end of the drain pipe 250 is connected to the drain outlet of the refrigerated water device 230, and the sixth pipeline on-off control component 260, the second pumping device 270 and the second pipeline check member 280 are all arranged on the drain pipe 250. In this embodiment of the present invention, on the drain pipe 250, the arrangement order of the sixth pipeline on-off control member 260, the second pumping device 270 and the second pipeline check member 280 can be from the first end to the second end (water outlet) of the drain pipe 250, in turn, the sixth pipeline on-off control member 260, the second pumping device 270 and the second pipeline check member 280, or from the first end to the second end (water outlet) of the drain pipe 250, in turn, the second pumping device 270, the sixth pipeline on-off control member 260, the second pumping device 270 and the second pipeline check member 280. 0 and the second pipeline check piece 280, the main function of the drain pipe 250 is to empty the chilled water device 230. During the emptying operation, the fourth pipeline on-off control component 210, the fifth pipeline on-off control component 220 and the fifth pipeline on-off control component 220 are opened at the same time, so that the outside air flows into the chilled water device 230 from the water outlet of the common water outlet pipe 180 and then enters the chilled water device 230 through the normal temperature water branch pipe 190 and the front section of the cold water branch pipe 200, so as to ensure that the water in the chilled water device 230 can be discharged normally.

[0050] In the second aspect of the present invention, the normal temperature water circuit refers to a water circuit that independently supplies normal temperature water. The normal temperature water circuit includes at least a normal temperature water pipe and a seventh pipeline on-off control component arranged on the normal temperature water pipe. The more complex normal temperature water circuit may also include a third pumping device and a third pipeline check member. The third pipeline check member is used to prevent water from flowing back from the outlet of the normal temperature water pipe. The third pumping device is used to drive the water flow from the water inlet to the outlet of the normal temperature water pipe. The seventh pipeline on-off control component is used to control the on-off of the water flow in the normal temperature water pipe.

[0051] In the second aspect of the present invention, the cold water circuit refers to a water circuit that independently supplies cold water. The cold water circuit includes at least a cold water pipe and an eighth pipeline on-off control component and a second refrigeration water device arranged on the cold water pipe. The second refrigeration water device can also be a compressor refrigeration water device (for example, a cold water tank with a compressor, a condenser and an evaporator as refrigeration components) or a semiconductor refrigeration water device (for example, an electronic ice tank). The more complex cold water circuit may also include a fourth pumping device and a fourth pipeline check member. The fourth pipeline check member is used to prevent water from flowing back from the outlet of the cold water pipe. The fourth pumping device is used to drive the water flow from the water inlet of the cold water pipe into the second refrigeration water device, and to pump the prepared cold water from the second refrigeration water device to the outlet of the cold water pipe. The eighth pipeline on-off control component is used to control the on-off of the water flow in the cold water pipe.

[0052] A third aspect of the present invention provides a drinking water device, comprising the water production system described in any one of the second aspects of the present invention. In the third aspect of the present invention, if the water production system includes only the hot water circuit, the drinking water device can be considered a hot beverage dispenser with only a hot water production function. If the water production system includes both the hot water circuit and one or more of the normal temperature water circuit, the cold water circuit, and the normal temperature / cold water combination circuit, the drinking water device constitutes a multi-purpose drinking water dispenser, better meeting the drinking water needs of users in different situations.

[0053] See also Figure 6 In some optional embodiments of the third aspect of the present utility model, the drinking water equipment further includes a water purification device 290, and the water purification device 290 is used to provide filtered source water for the water production system. The water purification device 290 can be a primary filtration water purification device 290 or a multi-stage water purification filtration device. Taking the multi-stage water purification filtration device as a secondary water purification filtration device as an example, the secondary water purification filtration device includes a pre-filter element 300 (such as a PPC composite filter element) and a membrane filter element 310 (such as an RO reverse osmosis filter element). The water inlet of the pre-filter element 300 is connected to tap water, and the water outlet of the pre-filter element 300 is further connected to the water inlet of the membrane filter element 310. The water inlet pipes of the hot water waterway, the normal temperature water waterway, the cold water waterway and the normal temperature / cold water combination waterway of the water production system all take water from the water outlet of the membrane filter element 310.

[0054] In order to better illustrate the technical solutions of the first, second and third aspects of the present invention, the present invention provides an exemplary embodiment for each of the three aspects as follows:

[0055] <Example 1>

[0056] See also Figure 3Embodiment 1 of the present invention discloses a hot water circuit, including a pipeline switching device 10 (three-way reversing valve), a first branch pipe 20, a second branch pipe 30, a hot water outlet pipe 40, a water preheating device 50, an instant heating device 60 (i.e., a heat pipe), a second pipeline on-off control component 110 (a two-way solenoid valve), a return pipe 120, a third pipeline on-off control component 130 (a two-way solenoid valve), a first pumping device 140 (a water pump), a first water inlet pipe 150, and a first pipeline on-off control component 160 (a two-way negative pressure valve).

[0057] The first end of the first branch pipe 20 is connected to the first water outlet of the pipeline switching device 10, and the second end of the first branch pipe 20 is connected to the water inlet of the hot water outlet pipe 40; the first end of the second branch pipe 30 is connected to the second water outlet of the pipeline switching device 10, and the second end of the second branch pipe 30 is connected to the water inlet of the hot water outlet pipe 40. The water preheating device 50 is arranged on the second branch pipe 30, and the instant heating device 60 is arranged on the hot water outlet pipe 40. The second pipeline on-off control component 110 is arranged on the hot water outlet. The water outlet end of the pipe 40; the first end of the return pipe 120 is connected to the water inlet end of the pipeline switching device 10, and the second end of the return pipe 120 is connected to the hot water outlet pipe 40 between the instant heating device 60 and the hot water outlet control member; the third pipeline on-off control member 130 is provided on the return pipe 120, and the return pipe 120 between the first pumping device 140 and the third pipeline on-off control member 130 is connected to the first water inlet pipe 150, and the first water inlet pipe 150 is provided with a first pipeline on-off control member 160, see Figure 2 The water preheating device 50 includes a storage tank 70, a heat storage medium (water) disposed in the storage tank 70, and a heating element 80 for heating the heat storage medium. The second branch pipe 30 is formed in a coil shape in the storage tank 70. The storage tank 70 is also connected to a liquid infusion pipe 90 and an overflow pipe 100. The liquid infusion pipe is provided with a liquid infusion on-off control element 320 (a two-way solenoid valve, Figure 3 As shown), the water inlet of the liquid replenishing pipe 90 and the water inlet of the first water inlet pipe 150 are connected to the same water supply pipe 330.

[0058] <Example 2>

[0059] See also Figure 4Example 2 of the present utility model discloses a water production system. Based on Example 1, the water production system also includes a normal temperature / cold water combination water circuit, and the normal temperature / cold water combination water circuit includes a common water inlet pipe 170, a common water outlet pipe 180, a normal temperature water branch pipe 190, a cold water branch pipe 200, a fourth pipeline on-off control component 210 (two-way solenoid valve), a fifth pipeline on-off control component 220 (two-way solenoid valve), a cooling water device 230 (electronic ice tank), a first pipeline check member 240 (check valve), a drain pipe 250, a sixth pipeline on-off control component 260 (two-way solenoid valve), a second pumping device 270 (water pump) and a second pipeline check member 280 (check valve).

[0060] The first end of the normal temperature water branch pipe 190 is connected to the water outlet end of the common water inlet pipe 170, and the second end of the normal temperature water branch pipe 190 is connected to the water inlet end of the common water outlet pipe 180. The fourth pipeline on-off control component 210 is provided on the normal temperature water branch pipe 190; the first end of the cold water branch pipe 200 is connected to the water outlet end of the common water inlet pipe 170, and the second end of the cold water branch pipe 200 is connected to the water inlet end of the common water outlet pipe 180. The fifth pipeline on-off control component 22 0. The chilled water device 230 and the first pipeline check member 240 are both arranged on the cold water branch pipe 200. The first end of the drain pipe 250 is connected to the drain outlet of the chilled water device 230. The sixth pipeline on-off control component 260, the second pumping device 270 and the second pipeline check member 280 are all arranged on the drain pipe 250. The common water inlet pipe 170 is connected to the water supply pipe 330 in Example 1. A flow meter 340 is provided on the water supply pipe 330.

[0061] <Example 3>

[0062] See also Figure 6 and 7, Example 3 of the present utility model discloses a drinking water device. On the basis of Example 2, the drinking water device further includes a water purification device 290. The water purification device 290 includes a water intake pipe 350, a pre-filter element 300 (including filter materials such as PP and activated carbon, used to remove impurities such as particulate matter and residual chlorine in tap water and pre-treat the source water), a connecting pipe 360, a water inlet solenoid valve 370, a booster pump 380 (used to increase the water pressure of the membrane filter element to ensure that the membrane filter element 310 can produce water normally), a membrane filter element 310 (the membrane filter element 310 is equipped with a reverse osmosis membrane or a nanofiltration membrane for removing ions, microorganisms, etc. in water to prepare drinking water) and a wastewater pipe 390. The water intake pipe 350 The first end of the water intake pipe 350 is connected to a water source (e.g., tap water), the second end of the water intake pipe 350 is connected to the water inlet of the pre-filter element 300, the first end of the connecting pipe 360 ​​is connected to the water outlet of the pre-filter element 300, the second end of the connecting pipe 360 ​​is connected to the water inlet of the membrane filter element 310, the waste water pipe 390 is connected to the waste water outlet of the membrane filter element 310, and the waste water pipe 390 is provided with a waste water pipe on-off control component 400 (e.g., a waste water valve for holding pressure and limiting flow to ensure that the working water pressure is maintained in the membrane filter element 310), the water inlet solenoid valve 370 and the booster pump 380 are arranged on the connecting pipe 360, and the water supply pipe 330 is connected to the water outlet of the membrane filter element 310.

[0063] The working logic of the water making system in the utility model drinking water equipment is as follows:

[0064] Outlet of normal temperature water: the water inlet solenoid valve 370, the booster pump 380 and the fourth pipeline on-off control component 210 are opened, and the rest are closed, and the common water outlet pipe 180 outlets normal temperature water;

[0065] Cold water discharge: the water inlet solenoid valve 370, the booster pump 380, the chilled water device 230 and the fifth pipeline on-off control component 220 are opened, and the rest are closed, and the common water outlet pipe 180 discharges cold water;

[0066] The cooling water device 230 is emptied: the fourth pipeline on-off control component 210, the fifth pipeline on-off control component 220, the drain pipe 250, the sixth pipeline on-off control component 260 and the second pumping device 270 are opened, and the rest are closed. Air enters the cooling water device 230 from the water outlet of the common water outlet pipe 180 through the fourth pipeline on-off control component 210 and the fifth pipeline on-off control component 220, ensuring that the water in the cooling water device 230 can be discharged normally.

[0067] Output of high-temperature hot water: The water inlet solenoid valve 370, the booster pump 380, the first pipeline on-off control component 160, the first pumping device 140, the water preheating device 50, the instant heating device 60, and the second pipeline on-off control component 110 are turned on, and the rest are closed. The pipeline switching device 10 switches to the second branch pipe 30, and the hot water outlet pipe 40 outputs high-temperature hot water;

[0068] Or if the one-time preheating cannot reach the target temperature, the method for producing high-temperature hot water can also be to first open the water inlet solenoid valve 370, the booster pump 380, the first pipeline on-off control component 160, the first pumping device 140, the water preheating device 50, the instant heating device 60 and the third pipeline on-off control component 130, and close the rest. After the pipeline is filled with water, the water inlet solenoid valve 370, the booster pump 380, and the first pipeline on-off control component 160 are closed to allow the water flow to pass through the second branch pipe 30, the hot water outlet pipe 40 and the water flow pipe for circulation heating. When the outlet temperature of the instant heating device 60 reaches the target temperature, the second pipeline on-off control component 110 is opened and the third pipeline on-off control component 130 is closed, and the hot water outlet pipe 40 discharges high-temperature hot water.

[0069] Output of low-temperature hot water: the water inlet solenoid valve 370, the booster pump 380, the first pipeline on-off control component 160, the first pumping device 140, the instant heating device 60 and the second pipeline on-off control component 110 are opened, and the rest are closed, the pipeline switching device 10 is switched to the first branch pipe 20, and the hot water outlet pipe 40 outputs low-temperature hot water.

[0070] The water preheating device 50 is replenished with water: the water inlet solenoid valve 370 , the booster pump 380 and the liquid replenishment on-off control component 320 are opened, and the storage tank 70 of the water preheating device 50 is replenished with water.

[0071] In general, the water making system in the drinking water equipment of the present invention solves the common problems of the existing drinking water equipment in that the flow rate of high-temperature hot water is small and the function of making ice water is not available, and can better meet the drinking water needs of users.

[0072] Although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A hot water channel, characterized in that: It includes a pipeline switching device, a first branch pipe, a second branch pipe, a hot water outlet pipe, a water preheating device and an instant heating device; the pipeline switching device includes a water inlet, a first water outlet and a second water outlet: The water inlet of the pipeline switching device is connected to the first water inlet pipe, the first end of the first branch pipe is connected to the first water outlet of the pipeline switching device, and the second end of the first branch pipe is connected to the water inlet end of the hot water outlet pipe; The first end of the second branch pipe is connected to the second water outlet of the pipeline switching device, and the second end of the second branch pipe is connected to the water inlet end of the hot water outlet pipe; The water preheating device is arranged on the second branch pipe, and the instant heating device is arranged on the hot water outlet pipe.

2. The hot water channel according to claim 1, characterized in that: A first pipeline on-off control component is provided on the first water inlet pipe, and a first pumping device is provided on the first water inlet pipe between the first pipeline on-off control component and the pipeline switching device.

3. The hot water channel according to claim 2, characterized in that: The hot water circuit also includes a second pipeline on-off control component, a return pipe and a third pipeline on-off control component; The second pipeline on-off control component is arranged at the water outlet end of the hot water outlet pipe; The first end of the return pipe is connected to the first water inlet pipe between the first pumping device and the first pipeline on-off control component, and the second end of the return pipe is connected to the hot water outlet pipe between the instant heating device and the second pipeline on-off control component; The third pipeline on-off control component is arranged on the reflux pipe.

4. The hot water channel according to claim 3, characterized in that: The first pipeline on-off control component includes a negative pressure valve, which is used to control the conduction of the first water inlet pipe when the first water inlet pipe connected to the return pipe is under negative pressure after the first pumping device is started.

5. The hot water channel according to any one of claims 1 to 4, characterized in that: The water preheating device includes a storage tank, a heat storage medium arranged in the storage tank, and a heating element for heating the heat storage medium.

6. A water production system, characterized in that: The invention comprises the hot water channel according to any one of claims 1 to 5; and one or more of a normal temperature water channel, a cold water channel and a normal temperature / cold water combination water channel.

7. The water production system according to claim 6, characterized in that: The normal temperature / cold water combined water circuit includes a common water inlet pipe, a common water outlet pipe, a normal temperature water branch pipe, a cold water branch pipe, a fourth pipeline on-off control component, a fifth pipeline on-off control component, a refrigerated water device, and a first pipeline check member; The first end of the normal temperature water branch pipe is connected to the water outlet end of the common water inlet pipe, the second end of the normal temperature water branch pipe is connected to the water inlet end of the common water outlet pipe, and the fourth pipeline on-off control component is provided on the normal temperature water branch pipe; The first end of the cold water branch pipe is connected to the water outlet end of the common water inlet pipe, the second end of the cold water branch pipe is connected to the water inlet end of the common water outlet pipe, and the fifth pipeline on-off control component, the refrigeration water device and the first pipeline check component are all arranged on the cold water branch pipe.

8. The water production system according to claim 7, characterized in that: The normal temperature / cold water combination water circuit also includes a drain pipe, a sixth pipeline on-off control component, a second pumping device and a second pipeline check component; The first end of the drain pipe is connected to the drain outlet of the cooling water device, and the sixth pipeline on-off control component, the second pumping device and the second pipeline check component are all arranged on the drain pipe.

9. A drinking water device, characterized in that: A water production system comprising the water production system according to any one of claims 6 to 8.

10. The drinking water equipment according to claim 9, characterized in that: It also includes a water purification device, which is used to provide filtered source water for the water production system.

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