CN219315886U - Water supply system - Google Patents

Abstract

The utility model provides a water supply system which comprises a water inlet pipeline, a hot water pipeline, a water outlet nozzle assembly, a water storage tank, a switching valve, a first pump and a return pipeline, wherein the inlet end of the hot water pipeline is connected with the outlet end of the water inlet pipeline, the water outlet nozzle assembly is connected with the outlet end of the hot water pipeline, the water storage tank, a heater, the switching valve and the first pump are arranged on the hot water pipeline, the inlet end of the return pipeline is connected with the hot water pipeline through the switching valve, the outlet end of the return pipeline is connected with the hot water pipeline and is positioned at the upstream of the water storage tank, and the switching valve is used for enabling water in the hot water pipeline to flow to the outlet end of the hot water pipeline or enter the return pipeline and return to the water storage tank. The water supply system preheats the water in the water storage tank when a user does not need to use hot water, and then after the user starts to take the hot water, the water supply system preheats the preheated water in the water storage tank and further heats the water, so that the user is rapidly provided with the needed high-temperature hot water.

Description

Water supply system

Technical Field

The utility model relates to the technical field of water purifiers, in particular to a water supply system.

Background

Water purifiers capable of supplying cold water and hot water exist on the market. The water purifier comprises a cold water branch and a hot water branch, and when a user needs cold water, the water flows to the water outlet nozzle through the cold water branch; when a user needs hot water, the water flows to the water outlet nozzle through a hot water branch, wherein the hot water branch is provided with a component for heating the water. However, the heating efficiency of the heating part is not high, and when a user needs to take hot water with a higher temperature, the temperature of hot water flowing out of the water purifier in a short time is difficult to meet the needs of the user after the user presses the water outlet button or switch of the water purifier.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a water supply system which preheats water in the water storage tank when a user does not need to use hot water, and then after the user starts to take the hot water, the water supply system preheats the water in the water storage tank and further heats the water, so that the user is quickly provided with the needed high-temperature hot water.

According to an embodiment of the present utility model, a water supply system includes: a water inlet pipeline; the inlet end of the hot water pipeline is connected with the outlet end of the water inlet pipeline; the water outlet nozzle assembly is connected with the outlet end of the hot water pipeline; the water storage tank is arranged on the hot water pipeline; the heater is arranged on the hot water pipeline; the switching valve is arranged on the hot water pipeline; the first pump is arranged on the hot water pipeline and used for driving water to sequentially flow through the water storage tank, the heater and the switching valve; the inlet end of the return pipeline is connected with the hot water pipeline through the switching valve, the outlet end of the return pipeline is connected with the hot water pipeline and is positioned at the upstream of the water storage tank, and the switching valve is used for enabling water in the hot water pipeline to flow to the outlet end of the hot water pipeline or enabling water in the hot water pipeline to enter the return pipeline and flow back to the water storage tank.

The water supply system provided by the embodiment of the utility model has at least the following beneficial effects: the water in the water storage tank is preheated before the user takes the hot water, and the heater can further heat the preheated water to the temperature required by the user after the user starts taking the hot water. If the water outlet temperature of the water outlet nozzle required by the user is the required temperature, the difference between the water temperature of the cold water and the required temperature is smaller than the difference between the water temperature in the water storage tank and the required temperature. That is, compared with the water supply system which directly heats cold water to a required temperature after a user starts to take water, the water supply system does not need to be greatly warmed after the user starts to take hot water, so that the water supply system can quickly provide the required high-temperature hot water for the user after the user starts to take hot water.

According to some embodiments of the utility model, the faucet assembly includes a regulating valve, and the water supply system further includes a cold water line; the regulating valve comprises a cold water inlet, a hot water inlet and a water outlet, the outlet end of the hot water pipeline is connected with the hot water inlet, and the opening of the cold water inlet and the opening of the hot water inlet can be regulated by the regulating valve; the inlet end of the cold water pipeline is connected with the outlet end of the water inlet pipeline, and the outlet end of the cold water pipeline is connected with the cold water inlet.

According to some embodiments of the utility model, the water supply system further comprises a reverse osmosis filter, the reverse osmosis filter being disposed in the water intake line.

According to some embodiments of the utility model, the water supply system further comprises: the second pump is arranged on the water inlet pipeline; the inlet end of the flushing pipeline is connected with the cold water pipeline, and the outlet end of the flushing pipeline is connected with the water inlet pipeline and positioned at the front side of a reverse osmosis membrane of the reverse osmosis filter; the flushing valve is arranged on the flushing pipeline and used for opening and closing the flushing pipeline; the inlet end of the waste water pipeline is connected with the reverse osmosis filter and is positioned at the front side of a reverse osmosis membrane of the reverse osmosis filter; and the waste water valve is arranged on the waste water pipeline and is used for opening and closing the waste water pipeline.

According to some embodiments of the utility model, the water supply system further comprises: the first valve is arranged on the hot water pipeline and used for opening and closing the hot water pipeline, and is positioned at the upstream of the outlet end of the return pipeline along the hot water pipeline; the second valve is arranged on the cold water pipeline and is used for opening and closing the cold water pipeline.

According to some embodiments of the utility model, the water supply system further comprises a hot water check valve mounted to the hot water line.

According to some embodiments of the utility model, the water supply system further comprises a first temperature sensor mounted to the hot water line upstream of the heater; the first temperature sensor is in communication connection with the heater, and when the water temperature detected by the first temperature sensor reaches a preset temperature, the heater is turned off.

According to some embodiments of the utility model, the water supply system further comprises a second temperature sensor mounted to the hot water line downstream of the heater, the second temperature sensor being communicatively coupled to the heater, the heating power of the heater being adjusted in response to the temperature of the water detected by the second temperature sensor.

According to some embodiments of the utility model, the water supply system further comprises a third temperature sensor, the third temperature sensor is arranged at the water outlet, the third temperature sensor is in communication connection with the regulating valve, and the opening of the cold water inlet and the opening of the hot water inlet are regulated according to the water temperature detected by the third temperature sensor.

According to some embodiments of the utility model, the water supply system further comprises: the first valve is arranged on the hot water pipeline and used for opening and closing the hot water pipeline, and the outlet end of the return pipeline is positioned between the first valve and the water storage tank; the liquid level detection device is arranged in the water storage tank and used for detecting the water level in the water storage tank, the liquid level detection device is in communication connection with the first valve, when the water level in the water storage tank is higher than or equal to a first water level, the first valve is closed, when the water level in the water storage tank is lower than or equal to a second water level, the first valve is opened, and the first water level is higher than the second water level.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic diagram of a water supply system in one embodiment of the utility model;

FIG. 2 is a schematic diagram of the switching valve of FIG. 1;

FIG. 3 is a schematic illustration of the water supply system of FIG. 1 in a preheat mode;

FIG. 4 is a schematic illustration of the water supply system of FIG. 1 providing hot water;

FIG. 5 is a schematic illustration of the water supply system of FIG. 1 providing chilled water;

FIG. 6 is a schematic view of the water supply system of FIG. 1 providing warm water;

FIG. 7 is a schematic illustration of the water supply system of FIG. 1 in removing stale water from a reverse osmosis filter;

fig. 8 is a schematic diagram of the water supply system of fig. 1 when replenishing the water tank.

Reference numerals:

100-water supply, 101-water inlet pipeline, 102-cold water pipeline, 103-hot water pipeline, 104-prefilter, 105-main valve, 106-second pump, 107-reverse osmosis filter, 108-postfilter, 109-waste water pipeline, 110-waste water valve, 111-flushing check valve, 112-flushing valve, 113-second valve, 114-regulating valve, 115-third temperature sensor, 116-water outlet nozzle, 117-first valve, 118-water storage tank, 119-first pump, 120-first temperature sensor, 121-heater, 122-second temperature sensor, 123-switching valve, 124-check valve, 125-flushing pipeline, 126-return pipeline, 127-hot water check valve;

201-three way inlet, 202-first outlet, 203-second outlet.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, and is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Fig. 1 shows a water supply system 100 in an embodiment of the utility model, the water supply system 100 comprising a water inlet line 101, a hot water line 103, a return line 126, a water reservoir 118, a heater 121, a switching valve 123, a first pump 119 and a spout assembly.

For convenience in describing the piping and water flow, certain nodes of the water supply 100 are labeled in fig. 1. In fig. 1, the water inlet line 101 corresponds to the line from point a to point C, the hot water line 103 corresponds to the line C-H-I-K-F, and the return line 126 corresponds to the line from point J to point H (from point J to point H in a clockwise direction). The inlet end (corresponding to point a) of the water inlet line 101 is adapted to be connected to a water source, not shown in the figures, which may be a tank or other container for storing water, or a municipal mains water supply. The outlet end of the water inlet pipe 101 is connected to the inlet end of the hot water pipe 103, and cold water from a water source can flow to the hot water pipe 103 through the water inlet pipe 101 and flow out after being heated in the hot water pipe 103.

As used herein, unless otherwise indicated, "cold water" refers to water provided directly from a water source or water entering the water supply system 100 but not heated, and "hot water" refers to water heated by the water supply system 100, wherein the temperature of the hot water is higher than the temperature of the cold water.

Referring to fig. 1, a water storage tank 118, a first pump 119, a heater 121, and a switching valve 123 are sequentially installed on the hot water line 103 in the flow direction of water in the hot water line 103. The water storage tank 118 is used to store water, the heater 121 is used to heat the water, and the heater 121 may be provided as a thick film heater. An inlet end (corresponding to point J) of the return line 126 is connected to the hot water line 103 through the switching valve 123, an outlet end (corresponding to point H) of the return line 126 is connected to the hot water line 103, and an outlet end of the return line 126 is located upstream of the water storage tank 118. The first pump 119 is used to drive water to flow in the hot water line 103 and the return line 126, and the switching valve 123 may cause water to flow to the outlet end of the hot water line 103 or cause water in the hot water line 103 to flow back to the water storage tank 118 through the return line 126.

The switching valve 123 is described here. In the embodiment shown in fig. 1, the switching valve 123 is provided as a three-way electromagnetic valve. Fig. 2 is an enlarged schematic view of the switching valve 123 in fig. 1. Referring to fig. 2, the switching valve 123 has a three-way inlet 201, a first outlet 202, and a second outlet 203; referring to fig. 1 and 2, point I in fig. 1 corresponds to the three-way inlet 201, point k corresponds to the first outlet 202, and point j corresponds to the second outlet 203. As the position of the spool of the switching valve 123 changes, one of the first outlet 202 and the second outlet 203 communicates with the three-way inlet 201. As shown in fig. 4 or 6, when the first outlet 202 is in communication with the three-way inlet 201, water passes through the first outlet 202 after leaving the heater 121, and then flows to the outlet end of the hot water line 103. When the second outlet 203 is in communication with the three-way inlet 201, as shown in fig. 3, water exits the heater 121 through the second outlet 203 and then flows along the return line 126 and back upstream of the water storage tank 118 and back into the water storage tank 118.

The outlet end of the hot water pipe 103 is connected to the water outlet nozzle assembly, and water flowing out of the outlet end of the hot water pipe 103 is then discharged through the water outlet nozzle assembly. In the embodiment shown in fig. 1, the spout assembly includes a spout 116 and a regulator valve 114. The spout assembly further includes a water outlet button and a temperature shift regulator, which are not shown in the drawings. The water supply 100 may also include a controller, not shown, to which all valves (except non-controllable one-way valves) in the water supply 100, all pumps, and the heater 121 are communicatively coupled, as are the water outlet buttons and the temperature shift knob. When the user desires to take water, the user may press the water outlet button and the controller causes the water supply 100 to operate in a particular mode, thereby causing water to flow from the water outlet nozzle 116. The user can adjust the temperature shift knob so that the water supply 100 provides water at a corresponding temperature.

How the water supply system 100 supplies hot water is described below.

Cold water in the water inlet line 101 may flow to the hot water line 103 and into the water storage tank 118, and then the water supply 100 preheats the cold water. Fig. 3 shows the state of the water supply system 100 during a preheating process, which is approximately as follows: the second outlet 203 and the three-way inlet 201 of the switching valve 123 are kept in an open state, the first outlet 202 is closed, and under the driving action of the first pump 119, water in the water storage tank 118 leaves the water storage tank 118 and sequentially flows through the heater 121 and the switching valve 123, and then flows back to the upstream of the water storage tank 118 through the return pipeline 126; as the first pump 119 is continuously operated, water continuously circulates in the hot water line 103 and the return line 126, and during the circulation, the water passes through the heater 121 a plurality of times, thereby being gradually heated. The preheating process may be performed without the need for the water supply to output hot water.

After a certain period of time, the first pump 119 is stopped and the heated water is stored in the water tank 118 and the hot water line 103 after the warm-up is completed. Assume such a usage scenario: when the user needs hot water and the water outlet temperature of the water outlet nozzle 116 is higher than the temperature of the preheated water in the water storage tank 118. Then when the user presses the outlet button of the spout assembly and adjusts the temperature shift knob of the spout assembly, the water supply system 100 operates in the mode shown in fig. 4. The switching valve 123 is switched to a state in which the three-way inlet 201 and the first outlet 202 are communicated, then the first pump 119 is turned on, the heater 121 is also turned on, the water in the water storage tank 118 is further heated after passing through the heater 121, and the water flows through the switching valve 123, the hot water pipeline 103 and the water outlet 116 in sequence after being heated to a temperature required by a user. For example, after the preheating is completed, the temperature of the water in the water storage tank 118 is 60 ℃, and when the user needs hot water of 95 ℃, the heater 121 heats the water flowing out of the water storage tank 118 to 95 ℃.

The water in the water storage tank 118 is preheated before the user takes the hot water, and after the user starts taking the hot water (for example, presses the water outlet switch), the heater 121 may further heat the preheated water to a temperature required by the user. If the water outlet temperature of the water outlet 116 required by the user is the required temperature, the difference between the temperature of the cold water and the required temperature is smaller than the difference between the temperature of the water in the water storage tank 118 and the required temperature. That is, the water supply system 100 of the present utility model does not require a great temperature rise of the water in the water storage tank 118 after the user starts to take the hot water, compared to directly heating the cold water to the required temperature after the user starts to take the hot water, and thus the water supply system 100 can rapidly supply the user with the required hot water at a high temperature after the user starts to take the hot water.

The above description of how the water supply system 100 provides hot water at a desired temperature above the soak temperature will be provided below as to how the water supply system 100 provides water at other temperatures.

Referring to fig. 1, in one embodiment, the water supply 100 further includes a cold water line 102 and a regulator valve 114. The cold water line 102 corresponds to the section of line C-D-E in FIG. 1. The inlet end of the cold water pipeline 102 is connected with the outlet end of the water inlet pipeline 101, and the outlet end of the cold water pipeline 102 and the outlet end of the hot water pipeline 103 are connected with the regulating valve 114. The cold water line 102 and the hot water line 103 are connected in parallel between the outlet end of the water intake line 101 and the regulating valve 114. The regulating valve 114 includes a cold water inlet corresponding to point E, a hot water inlet corresponding to point F, and a water outlet corresponding to point G in fig. 1. The cold water inlet is connected to the outlet end of the cold water pipe 102 and the hot water inlet is connected to the outlet end of the hot water pipe 103. By changing the position of the spool of the regulating valve 114, the opening of the cold water inlet and the opening of the hot water inlet can be regulated. The regulator valve 114 may employ a shower mixing valve for cooperation with the showerhead.

Referring to fig. 1, the water supply system 100 further includes a main valve 105, a second pump 106, a first valve 117, and a second valve 113, the main valve 105 and the second pump 106 are both installed on the water inlet pipe 101, the first valve 117 is installed on the hot water pipe 103, and the second valve 113 is installed on the cold water pipe 102. Wherein the first valve 117 is located upstream of the outlet end (point H) of the return line 126 as seen along the hot water line 103. The main valve 105 is used to open or close the water inlet line 101, and the second pump 106 is used to drive water to flow along the water inlet line 101. The first valve 117 may open or close the hot water line 103, and the second valve 113 may open or close the cold water line 102. The first valve 117 and the second valve 113 are used to control the flow direction of water so that the water in the water inlet pipe 101 flows to the cold water pipe 102 or the hot water pipe 103. By "closing" a conduit in the present utility model is meant blocking the flow of water from the inlet end of the conduit to the outlet end of the conduit; if the pipe is opened, water may flow directly from the inlet end of the pipe to the outlet end of the pipe. The main valve 105, the first valve 117, the second valve 113, the flushing valve 112 and the waste valve 110 may be all provided as solenoid valves.

In the case where it is desired to supply cold water to the user, the water supply system 100 may be operated as shown in fig. 5. In fig. 5, the main valve 105 and the second valve 113 are in an open state, and the first valve 117, the flushing valve 112 and the waste water valve 110 are in a closed state (the flushing valve 112 and the waste water valve 110 will be described in detail below), the cold water inlet and the water outlet of the regulating valve 114 are communicated, and the hot water outlet of the regulating valve 114 is closed (i.e., the opening degree of the cold water inlet is not 0, and the opening degree of the hot water outlet is 0). After the water in the water source enters the water inlet pipeline 101, the water flows through the cold water pipeline 102 and the regulating valve 114 sequentially after being conveyed by the second pump 106, and finally flows out of the water outlet nozzle 116.

The water supply system 100 may supply hot water to a user, but the water supply system 100 may operate in the mode shown in fig. 4 or 6 according to a difference in the temperature of the hot water required by the user.

When the water supply 100 is operated in the mode shown in fig. 4, the water supply 100 provides water to the user at a higher temperature than the water in the water reservoir 118; this mode of operation has been described in detail above and will not be repeated here. However, it should be noted that, in the case where the water supply system 100 has the regulating valve 114, when the water supply system 100 is operated in the mode shown in fig. 4, the cold water inlet of the regulating valve 114 is closed (i.e., the opening degree of the cold water inlet is 0), and the water outlet of the regulating valve 114 is only communicated with the hot water inlet thereof.

When the water supply 100 is operated in the mode shown in fig. 6, the water supply 100 provides water to the user at a temperature that is lower than the temperature of the water in the water reservoir 118. Specifically, referring to fig. 6, the main valve 105 and the second valve 113 are in an open state, the three-way inlet 201 of the switching valve 123 communicates with the first outlet 202, the flush valve 112, the waste water valve 110 and the first valve 117 are in a closed state, the opening degrees of the cold water inlet and the hot water inlet of the regulating valve 114 are not 0, the second pump 106 and the first pump 119 are operated and water is fed, but the heater 121 is not opened. Cold water flows through the water inlet pipeline 101 and the cold water pipeline 102 in sequence, and enters the regulating valve 114 from a cold water inlet; the water flowing out of the water storage tank 118 passes through the first pump 119, the heater 121 (the heater 121 is in the off state), the switching valve 123, and enters the regulating valve 114 from the hot water inlet. The cold water and the hot water are mixed in the regulating valve 114, and the mixed water flows out from the water outlet of the regulating valve 114 and flows to the water nozzle 116. The temperature of the mixed water will be lower than the temperature of the water in the water storage tank 118, and therefore the mode provides hot water at a temperature lower than the temperature of the stored water in the water storage tank 118.

If the water supplied by the water supply system 100 in the mode shown in fig. 6 is referred to as "warm water", the temperature of the warm water may also be adjusted. The temperature of the mixed warm water depends on the flow rates of the warm water and the cold water entering the regulating valve 114, and the higher the proportion of the warm water entering the regulating valve 114 is, the higher the temperature of the warm water is, with the total water inflow of the regulating valve 114 unchanged. Therefore, if it is necessary to raise the temperature of the warm water, the opening degree of the hot water inlet may be increased, and the opening degree of the cold water inlet may be decreased, thereby increasing the proportion of the hot water entering the regulating valve 114; if it is necessary to lower the temperature of the warm water, the opening degree of the warm water inlet may be decreased, and the opening degree of the cold water inlet may be increased, thereby increasing the proportion of the cold water entering the regulating valve 114.

If the user only needs the outlet nozzle 116 to have a water outlet temperature equal to the temperature of the preheated water in the water storage tank 118, the heater 121 may not be turned on and the rest of the water supply system 100 may still operate as shown in fig. 4.

To sum up, the water supply system 100 shown in fig. 1 can provide the following three kinds of water for the user: (1) unheated cold water; (2) Hot water having a temperature higher than the cold water temperature but lower than the temperature of the water stored in the water storage tank 118, i.e., the warm water described above; (3) Hot water having a temperature greater than or equal to the temperature of the water stored in the water storage tank 118. Also, for the (2) th water, the temperature of this water can be adjusted by adjusting the valve 114; for the (3) th water, the temperature of this water can be adjusted by adjusting the power of the heater 121. Therefore, the water supply system 100 of the present embodiment can provide a wide temperature range of water.

Referring to fig. 1, in one embodiment, the water supply 100 further includes a number of filters mounted on the water inlet line 101. The filter is used for filtering water, so that the quality of the water provided for a user is improved. In the embodiment shown in fig. 1, three filters are provided, namely a pre-filter 104, a reverse osmosis filter 107 and a post-filter 108. The filter element of the pre-filter 104 is a combination of a carbon rod and PP cotton (cotton made of polypropylene), the filter element of the reverse osmosis filter 107 is a reverse osmosis membrane, and the filter element of the post-filter 108 is a carbon rod.

Referring to fig. 1, in one embodiment, the water supply system 100 further includes a flush line 125, a flush valve 112, a waste line 109, and a waste valve 110. The flush line 125 corresponds to the segment of line from point D to point B in fig. 1 (viewed in a counterclockwise direction). The inlet end of the flushing line 125, which is connected to the cold water line 102, corresponds to point D in fig. 1; the outlet end of the flushing line 125, which is connected to the water inlet line 101 and is located upstream of the reverse osmosis filter 107, corresponds to point B in fig. 1. The flush valve 112 is mounted on the flush line 125, the flush valve 112 being used to open or close the flush line 125. One end of the waste water line 109 is connected to the reverse osmosis filter 107, and the inlet end of the waste water line 109 is located at the front side of the reverse osmosis membrane of the reverse osmosis filter 107. Wherein, the water which is not filtered by the reverse osmosis membrane is positioned at the front side of the reverse osmosis membrane, the water which is filtered by the reverse osmosis membrane is positioned at the back side of the reverse osmosis membrane, and the water positioned at the front side of the reverse osmosis membrane passes through the reverse osmosis membrane and moves to the back side of the reverse osmosis membrane after being filtered by the reverse osmosis membrane. A waste valve 110 is installed on the waste line 109, and the waste valve 110 is used to open or close the waste line 109.

The flushing line 125, the flushing valve 112, the waste water line 109 and the waste water valve 110 are provided to increase the quality of the water flowing out of the water supply system 100 with respect to the waste water remaining on the front side of the reverse osmosis membrane of the reverse osmosis filter 107. Specifically, the water supply system 100 has a water removal mode, and the state when the water supply system 100 is operated in the water removal mode is shown in fig. 7. In fig. 7, the flushing valve 112 and the waste water valve 110 are opened, the first valve 117, the second valve 113 and the main valve 105 are closed, and the water in the cold water pipe 102 is returned to the water inlet pipe 101 through the flushing pipe 125 by the driving of the second pump 106, then enters the reverse osmosis filter 107 again, and a part of the waste water in the reverse osmosis filter 107 located on the front side of the reverse osmosis membrane is flushed into the waste water pipe 109, and the waste water is discharged through the waste water pipe 109. The concentration of the soluble solids in the wastewater is higher, and the concentration of the soluble solids before and after the reverse osmosis membrane is at a lower value after the wastewater is discharged in the mode of removing the aged water, which is beneficial to avoiding forward osmosis of the reverse osmosis membrane, thereby avoiding the reduction of the filtering effect of the reverse osmosis filter 107 on the soluble solids.

Referring to fig. 1, the water supply system 100 may further include a flushing check valve 111, the flushing check valve 111 being mounted on the flushing line 125, the flushing check valve 111 may block water from flowing from the inlet end of the flushing line 125 along the flushing line 125 to the inlet end of the flushing line 125.

Referring to fig. 1, in an embodiment, the water supply system 100 further includes a first temperature sensor 120, the first temperature sensor 120 being mounted on the hot water line 103 and upstream of the heater 121. The temperature of the water in the hot water line 103 detected by the first temperature sensor 120 is used as the water inlet temperature of the heater 121. The first temperature sensor 120 is communicatively connected to the heater 121 so that the heater 121 can be operated according to a detection result of the first temperature sensor 120, and when the water temperature detected by the first temperature sensor 120 reaches a preset temperature, the heater 121 is turned off. For example, the cold water temperature is 25 ℃, and if the preheating process needs to heat the cold water to 60 ℃, the preset temperature can be set to 60 ℃; during the warm-up process, water circulates between the hot water line 103 and the return line 126, and when the first temperature sensor 120 detects that the water temperature reaches 60 ℃, the warm-up process is stopped, the heater 121 and the first pump 119 are both turned off, and the water in the water storage tank 118 is 60 ℃.

Referring to fig. 1, in one embodiment, the water supply system 100 further includes a second temperature sensor 122, the second temperature sensor 122 being mounted on the hot water line 103 and downstream of the heater 121. The temperature of the water in the hot water pipe 103 detected by the second temperature sensor 122 is used as the water outlet temperature of the heater 121. The second temperature sensor 122 is communicatively connected to the heater 121, and the power of the heater 121 is adjusted according to the water temperature detected by the second temperature sensor 122. For example, if the actual outlet water temperature of the heater 121 still differs significantly from the desired outlet water temperature of the heater 121 within a preset period of time, the power of the heater 121 may be adjusted upward.

Referring to fig. 1, in an embodiment, the water supply system 100 further includes a third temperature sensor 115, and the third temperature sensor 115 is disposed at the water outlet of the regulating valve 114. The third temperature sensor 115 is in communication connection with the regulating valve 114, and the regulating valve 114 regulates the opening of the cold water inlet and the opening of the hot water inlet according to the water temperature detected by the third temperature sensor 115, and the setting is used for regulating the water outlet temperature of the water outlet nozzle 116 in real time, so that the error between the actual water outlet temperature of the water outlet nozzle 116 and the water outlet temperature required by a user is reduced.

Specifically, when the water temperature detected by the third temperature sensor 115 is less than the water outlet temperature required by the user, the adjustment valve 114 may decrease the opening of the cold water inlet and increase the opening of the hot water inlet; in this way, the flow rate of the cold water entering the regulating valve 114 decreases, the flow rate of the hot water entering the regulating valve 114 increases, and the outlet temperature of the outlet nozzle 116 increases. Similarly, when the water temperature detected by the third temperature sensor 115 is greater than the water temperature required by the user, the adjustment valve 114 may increase the opening of the cold water inlet and decrease the opening of the hot water inlet; accordingly, the flow rate of the hot water entering the regulating valve 114 decreases, the flow rate of the cold water entering the regulating valve 114 increases, and the outlet water temperature of the outlet nozzle 116 decreases.

Referring to fig. 1, in one embodiment, the water supply system 100 further includes a liquid level detection device, which may be a liquid level sensor or a liquid level switch, mounted inside the water storage tank 118 (not shown). The liquid level detection device is in communication with the first valve 117. The liquid level detecting device is used for detecting the water level in the water storage tank 118, and the first valve 117 acts according to the signal of the liquid level detecting device to ensure that the water amount in the water storage tank 118 is in a proper range.

When the water level in the water storage tank 118 is higher than or equal to the first water level, the first valve 117 is closed, and the water in the water inlet pipe 101 cannot enter the inside of the water storage tank 118 any more, so that the water in the water storage tank 118 can be prevented from being excessive.

When the water level in the water storage tank 118 is lower than or equal to the second water level (the second water level is lower than the first water level), the first valve 117 is opened, and if the water inlet pipeline 101 is provided with the main valve 105 and the second pump 106, the main valve 105 and the second pump 106 are also opened; subsequently, the water in the water intake pipe 101 may enter the inside of the water storage tank 118, thereby replenishing the water in the water storage tank 118. When the water in the water storage tank 118 returns to the first level, the first valve 117 is closed, and then the water supply system 100 may be operated in the warm-up mode.

When the water storage tank 118 is replenished, the water supply system 100 is operated as shown in fig. 8. In fig. 8, the main valve 105, the first valve 117 are in an open state, the second valve 113, the flushing valve 112 and the waste water valve 110 are in a closed state, and the second pump 106 delivers water from the water intake pipe 101 to the water storage tank 118.

Referring to fig. 1, in one embodiment, the water supply 100 further includes a hot water check valve 127, the hot water check valve 127 being mounted on the return line 126. If the hot water check valve 127 is not provided, when the cold water passes through the first valve 117 during the water replenishing process of the water storage tank 118, a part of the cold water flows into the water storage tank 118, and the other part of the cold water flows to the switching valve 123 through the outlet end of the return line 126. This reduces the amount of water flowing to the water storage tank 118, affecting the water replenishment efficiency of the water storage tank 118. If the hot water check valve 127 is provided, water can be prevented from flowing from the return line 126 to the switching valve 123, and the water replenishing efficiency of the water storage tank 118 can be improved. In addition, a check valve 124 may be provided in the portion of the hot water line 103 between the hot water inlet and the first outlet 202 (i.e., the portion of the line between the point K and the point F) to prevent water from flowing back from the regulator valve 114 to the switching valve 123.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. The water supply system, characterized by comprising:

a water inlet pipeline;

the inlet end of the hot water pipeline is connected with the outlet end of the water inlet pipeline;

the water outlet nozzle assembly is connected with the outlet end of the hot water pipeline;

the water storage tank is arranged on the hot water pipeline;

the heater is arranged on the hot water pipeline;

the switching valve is arranged on the hot water pipeline;

the first pump is arranged on the hot water pipeline and used for driving water to sequentially flow through the water storage tank, the heater and the switching valve;

the inlet end of the return pipeline is connected with the hot water pipeline through the switching valve, the outlet end of the return pipeline is connected with the hot water pipeline and is positioned at the upstream of the water storage tank, and the switching valve is used for enabling water in the hot water pipeline to flow to the outlet end of the hot water pipeline or enabling water in the hot water pipeline to enter the return pipeline and flow back to the water storage tank.

2. The water supply of claim 1, wherein the faucet assembly includes a regulator valve, the water supply further including a cold water line;

the regulating valve comprises a cold water inlet, a hot water inlet and a water outlet, the outlet end of the hot water pipeline is connected with the hot water inlet, and the opening of the cold water inlet and the opening of the hot water inlet can be regulated by the regulating valve;

the inlet end of the cold water pipeline is connected with the outlet end of the water inlet pipeline, and the outlet end of the cold water pipeline is connected with the cold water inlet.

3. The water supply system of claim 2, further comprising a reverse osmosis filter disposed in the water intake line.

4. A water supply according to claim 3, further comprising:

the second pump is arranged on the water inlet pipeline;

the inlet end of the flushing pipeline is connected with the cold water pipeline, and the outlet end of the flushing pipeline is connected with the water inlet pipeline and is positioned at the upstream of the reverse osmosis filter;

the flushing valve is arranged on the flushing pipeline and used for opening and closing the flushing pipeline;

the inlet end of the waste water pipeline is connected with the reverse osmosis filter and is positioned at the front side of a reverse osmosis membrane of the reverse osmosis filter;

and the waste water valve is arranged on the waste water pipeline and is used for opening and closing the waste water pipeline.

5. The water supply system of claim 2, further comprising:

the first valve is arranged on the hot water pipeline and used for opening and closing the hot water pipeline, and is positioned at the upstream of the outlet end of the return pipeline along the hot water pipeline;

the second valve is arranged on the cold water pipeline and is used for opening and closing the cold water pipeline.

6. The water supply of claim 5, further comprising a hot water check valve mounted to the hot water line.

7. The water supply of claim 1, further comprising a first temperature sensor mounted to the hot water line upstream of the heater; the first temperature sensor is in communication connection with the heater, and when the water temperature detected by the first temperature sensor reaches a preset temperature, the heater is turned off.

8. The water supply of claim 1, further comprising a second temperature sensor mounted to the hot water line downstream of the heater, the second temperature sensor being communicatively coupled to the heater, the heating power of the heater being adjusted based on the water temperature detected by the second temperature sensor.

9. The water supply system of claim 2, further comprising a third temperature sensor disposed at the water outlet, the third temperature sensor in communication with the regulating valve, the opening of the cold water inlet and the opening of the hot water inlet being regulated in accordance with the temperature of the water detected by the third temperature sensor.

10. The water supply system of claim 1, further comprising:

the first valve is arranged on the hot water pipeline and used for opening and closing the hot water pipeline, and the outlet end of the return pipeline is positioned between the first valve and the water storage tank;

the liquid level detection device is arranged in the water storage tank and used for detecting the water level in the water storage tank, the liquid level detection device is in communication connection with the first valve, when the water level in the water storage tank is higher than or equal to a first water level, the first valve is closed, when the water level in the water storage tank is lower than or equal to a second water level, the first valve is opened, and the first water level is higher than the second water level.

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