Soft water control valve assembly, soft water system and water heater

Abstract

The utility model provides a soft water control valve assembly, a soft water system and a water heater, the soft water control valve assembly comprises a main pipeline, the main pipeline is provided with a main valve; a first branch and a second branch are arranged on one side of the main valve, and a third branch is arranged on the other side of the main valve; a first valve is arranged on the first branch; the tail end of the second branch is intersected with the first branch, a second valve is arranged on the second branch, and a Venturi tube is arranged between the second valve and the tail end of the second branch; a third valve is arranged on the third branch; a suction inlet is formed in the side face of the Venturi tube and connected with a fourth branch, a fourth valve is arranged on the fourth branch, the third branch is connected with a fifth branch, and a fifth valve is arranged on the fifth branch. The water softening and regenerating functions are realized through the combination of a plurality of valves, the production cost can be reduced, only damaged parts need to be replaced when the valve is damaged, and the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water heater technical field, especially a kind of soft water control valve assembly, soft water system and water heater. BACKGROUND

[0002] With the improvement of people's living standards, people's demand for soft water is rising. Soft water does not contain or contain less soluble calcium and magnesium compounds, and using soft water can effectively inhibit fungi, delay skin aging and prevent water from scaling after heating. The soft water device generally sets the resin tank for storing softening resin, the salt tank for storing solid regeneration salt and the soft water control valve. After the softening resin in the resin tank is used for a long time, it will lose activity and not have softening ability. Then the softening resin needs to be regenerated. The regeneration process generally includes water replenishment, salt dissolution, salt washing and flushing stages. The soft water control valve switches the water flow direction of each station by switching different gears. When the softening resin needs to be regenerated, the regeneration function is started. In the water replenishment stage, the soft water control valve injects tap water into the salt tank. In the salt dissolution stage, the tap water dissolves the solid regeneration salt to form high-concentration brine. In the salt washing stage, the soft water control valve sucks the high-concentration brine in the salt tank into the resin tank to regenerate the softening resin. In the flushing stage, the soft water control valve injects tap water into the resin tank to flush and remove excess salt. The soft water control valve on the market is usually a multi-pass butterfly valve, which switches different water paths by changing the angle of the butterfly valve. The control valve structure is too precise, the cost is high, and once damaged, the whole valve needs to be replaced, increasing the maintenance cost.

[0003] Therefore, it is necessary to provide an improved technical solution to overcome the above-mentioned deficiencies of the prior art. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a soft water control valve assembly, which realizes soft water and regeneration functions by combining multiple valves, can reduce production cost, and only needs to replace damaged parts when damaged, reducing maintenance cost.

[0005] Another object of the utility model is to provide a soft water system, which includes the above-mentioned soft water control valve assembly, which realizes soft water and regeneration functions by combining multiple valves instead of the existing multi-pass butterfly valve, can reduce production cost, and only needs to replace damaged parts when damaged, reducing maintenance cost.

[0006] Still another object of the utility model is to provide a water heater, which includes the above-mentioned soft water system.

[0007] To achieve the above-mentioned objects, the utility model provides the following technical solutions:

[0008] A soft water control valve assembly, comprising a main pipeline, a water inlet and a water outlet at both ends of the main pipeline, and a main valve arranged on the main pipeline; a first branch and a second branch are sequentially arranged between the main valve and the water inlet, and a third branch is arranged between the main valve and the water outlet; a soft water inlet is arranged at the end of the first branch, and a first valve is arranged on the first branch; the second branch is connected with the first branch at the end, and the connection position is between the first valve and the soft water inlet; a second valve is arranged on the second branch, and a Venturi tube is arranged between the second valve and the end of the second branch; a soft water outlet is arranged at the end of the third branch, and a third valve is arranged on the third branch;

[0009] A suction inlet is arranged on the side of the Venturi tube, the suction inlet is connected with a fourth branch, a fourth valve is arranged on the fourth branch, and a brine inlet is arranged at the end of the fourth branch; the third branch between the third valve and the soft water outlet is connected with a fifth branch, a fifth valve is arranged on the fifth branch, and a sewage outlet is arranged at the end of the fifth branch.

[0010] According to an embodiment of the utility model, the main valve, the first valve, the second valve, the third valve, the fourth valve and the fifth valve are all solenoid valves.

[0011] According to an embodiment of the utility model, the third valve is a one-way valve, so that the water in the third branch flows to the main pipeline.

[0012] According to an embodiment of the utility model, the diameter of the Venturi tube is smaller than the diameter of the first valve.

[0013] The utility model also provides a soft water system, comprising the soft water control valve assembly, and a soft water tank, a salt tank and a sewage pipe.

[0014] The soft water tank is provided with a soft water tank inlet and a soft water tank outlet, the soft water tank inlet is connected with the soft water inlet, and the soft water tank outlet is connected with the soft water outlet; the salt tank is provided with a salt suction pipe, the top end of the salt suction pipe is connected with the brine inlet; and the sewage pipe is connected with the sewage outlet.

[0015] According to an embodiment of the utility model, the soft water tank comprises a tank body, the bottom end of the tank body is provided with an opening, and the top end of the tank body is provided with an air inlet one-way valve; a vertical flow guide pipe is arranged in the tank body, the bottom end of the flow guide pipe is the soft water tank inlet, and the soft water tank outlet is formed between the bottom end of the flow guide pipe and the opening; the flow guide pipe and the inner wall of the tank body are filled with softening resin; an air chamber is formed between the top of the softening resin and the top of the tank body, the air inlet one-way valve is communicated with the air chamber; and a spray head is arranged at the top end of the flow guide pipe, and the spray head is arranged in the air chamber.

[0016] According to one embodiment of the utility model, the inner wall of the air chamber is provided with a liquid level sensor.

[0017] According to one embodiment of the utility model, a grid is arranged in the outlet of the soft water tank.

[0018] And / or, the spray head is provided with strip-shaped water outlets.

[0019] The utility model also provides a water heater, comprising the above-mentioned soft water system, the water heater is equipped with heating device, the heating device two ends are connected cold water pipe and hot water pipe respectively, the water inlet and water outlet of main pipeline are connected on the cold water pipe.

[0020] According to one embodiment of the utility model, a flow sensor is arranged on the cold water pipe.

[0021] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0022] The soft water control valve assembly, the soft water system and the water heater provided by the utility model embodiment can realize the switching of soft water / ordinary water and the regeneration of the softening resin in the soft water tank by controlling the on-off of the main valve, the first valve, the second valve, the third valve, the fourth valve and the fifth valve. The soft water control valve assembly provided by the utility model realizes the soft water and regeneration functions by the combination of multiple valves, and has a simpler structure and lower cost (the module cost is reduced by about 50%) compared with the existing multi-pass butterfly valve, so that the production cost is greatly reduced, and only the damaged parts need to be replaced when damage occurs, without the need for overall replacement, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of the specification of the utility model are used to provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. Among them:

[0024] Figure 1 The structural schematic view of the soft water control valve assembly provided by the utility model embodiment is shown in the figure;

[0025] Figure 2 The structural schematic view of the soft water system provided by the utility model embodiment is shown in the figure;

[0026] Figure 3 The running schematic view of the soft water system provided by the utility model embodiment in the ordinary water mode is shown in the figure;

[0027] Figure 4 The running schematic view of the soft water system provided by the utility model embodiment in the soft water mode is shown in the figure;

[0028] Figure 5 A running schematic diagram of the soft water system in a regeneration water replenishing stage is provided for the embodiments of the present utility model;

[0029] Figure 6 A running schematic diagram of the soft water system in a regeneration salt dissolving stage is provided for the embodiments of the present utility model;

[0030] Figure 7 A running schematic diagram of the soft water system in a regeneration salt washing stage is provided for the embodiments of the present utility model;

[0031] Figure 8 A running schematic diagram of the soft water system in a regeneration flushing stage is provided for the embodiments of the present utility model;

[0032] Figure 9 A running schematic diagram of the soft water system in a micro-bubble inflation stage is provided for the embodiments of the present utility model;

[0033] Figure 10 A structure schematic diagram of the water heater is provided for the embodiments of the present utility model.

[0034] Explanation of reference signs:

[0035] 1, first branch; 10, first valve; 11, soft water inlet; 2, second branch; 20, second valve; 21, Venturi tube; 211, suction inlet; 3, third branch; 30, third valve; 31, soft water outlet; 4, fourth branch; 40, fourth valve; 41, brine inlet; 42, salt tank; 43, salt suction pipe; 5, fifth branch; 50, fifth valve; 51, blowdown inlet; 52, blowdown pipe; 6, main pipeline; 60, main valve; 61, water inlet; 62, water outlet; 7, soft water tank; 70, tank body; 71, soft water tank inlet; 72, soft water tank outlet; 73, air inlet check valve; 74, flow guide pipe; 75, softening resin; 76, air chamber; 77, spray head; 78, liquid level sensor; 79, grille; 8, heating device; 81, cold water pipe; 82, hot water pipe; 83, flow sensor; 84, bubbler; 9, display controller. DETAILED DESCRIPTION

[0036] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than limiting the present utility model. In fact, those skilled in the art will appreciate that modifications and variations can be made in the present utility model without departing from the scope or spirit of the present utility model. For example, features shown as or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present utility model encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0037] In the description of the utility model, "first", "second" and similar words do not represent any order, quantity or importance, but only distinguish different components, "include" or "contain" and similar words mean that the element or object before the word covers the element or object listed after the word and its equivalent, and other elements or objects are not excluded, the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and does not require the utility model to be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. The terms "connected", "connected", "provided" used in the utility model should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, it can be directly connected, or it can be indirectly connected through an intermediate part, it can be wired electrical connection, wireless electrical connection, or wireless communication signal connection, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] As Figure 1 The utility model discloses a soft water control valve assembly, including main pipeline 6, the water inlet 61 and the water outlet 62 of two ends of this main pipeline 6 respectively, be equipped with main valve 60 on this main pipeline 6. First branch 1 and second branch 2 are equipped in proper order between the main valve 60 and the water inlet 61, and third branch 3 is equipped between the main valve 60 and the water outlet 62. The end of first branch 1 is soft water inlet 11, and first valve 10 is equipped on first branch 1. The second branch 2 end meets first branch 1, and the meeting place is between first valve 10 and soft water inlet 11. Second valve 20 is equipped on second branch 2, and venturi tube 21 is equipped between second valve 20 and the second branch 2 end. The end of third branch 3 is soft water outlet 31, and third valve 30 is equipped on third branch 3. The side of venturi tube 21 is equipped with suction inlet 211, and suction inlet 211 is connected fourth branch 4, fourth valve 40 is equipped on fourth branch 4, and the end of fourth branch 4 is brine port 41. The third branch 3 between third valve 30 and soft water outlet 31 is connected fifth branch 5, and fifth valve 50 is equipped on fifth branch 5, and the end of fifth branch 5 is blowdown port 51.

[0039] As Figure 2As shown, in use, the soft water control valve assembly provided in this embodiment of the present invention has the following connections: the inlet 61 of the main pipeline 6 is connected to a water source; the outlet 62 of the main pipeline 6 is connected to a water-using device; the soft water inlet 11 is connected to the soft water tank inlet 71 of the soft water tank 7; the soft water outlet 31 is connected to the soft water tank outlet 72 of the soft water tank 7; the brine outlet 41 is connected to the brine suction pipe 43 of the brine tank 42; and the drain outlet 51 is connected to the drain pipe 52. By controlling the opening and closing of the main valve 60, the first valve 10, the second valve 20, the third valve 30, the fourth valve 40, and the fifth valve 50, operations such as switching between soft water and ordinary water and the regeneration of the softening resin in the soft water tank 7 can be achieved. The soft water control valve assembly provided in this embodiment of the utility model realizes the functions of soft water and regeneration through the combination of multiple valves. Compared with the existing multi-channel butterfly valve, it has a simpler structure and lower cost (module cost is reduced by about 50%), thus greatly reducing production costs. In the event of damage, only the damaged parts need to be replaced, without the need for overall replacement, which also reduces maintenance costs.

[0040] In one embodiment of this invention, the main valve 60, the first valve 10, the second valve 20, the third valve 30, the fourth valve 40, and the fifth valve 50 are all solenoid valves. Each solenoid valve is connected to a control system (e.g., a display controller) to control its on / off state and achieve its corresponding function. Preferably, the main valve 60 is a normally open solenoid valve, and the first valve 10, the second valve 20, the fourth valve 40, and the fifth valve 50 are all normally closed solenoid valves, which helps to save power.

[0041] In one embodiment of this utility model, the third valve 30 is a one-way valve, which allows the water in the third branch 3 to flow to the main branch 6, thereby reducing the number of solenoid valves that need to be controlled and simplifying the control system.

[0042] Since the liquid in the fourth branch 4 is drawn in by the negative pressure generated in the venturi tube 21 (used to draw in the high-concentration brine in the salt tank 42), in one embodiment of the present invention, the diameter of the venturi tube 21 is much smaller than the diameter of the first valve 10, which is beneficial to control the regeneration salt washing flow rate in the fourth branch 4.

[0043] like Figure 2 As shown, this utility model also provides a soft water system, including the aforementioned soft water control valve assembly, a soft water tank 7, a brine tank 42, and a drain pipe 52. The soft water tank 7 has a soft water tank inlet 71 and a soft water tank outlet 72. The soft water tank inlet 71 is connected to the soft water inlet 11, and the soft water tank outlet 72 is connected to the soft water outlet 31. The brine tank 42 has a brine suction pipe 43, the top end of which is connected to the brine outlet 41. Regenerated salt is placed inside the brine tank 42, and the brine suction pipe 43 extends to the bottom of the brine tank 42. The drain pipe 52 is connected to the drain outlet 51, and the end of the drain pipe 52 is connected to the sewer (i.e., the atmospheric environment).

[0044] The operation process of the soft water system provided by this utility model is as follows:

[0045] 1. For example Figure 2 , Figure 3 As shown, in normal water mode, the control system opens the main valve 60 and closes the first valve 10, the second valve 20, the third valve 30, the fourth valve 40, and the fifth valve 50, as indicated by the arrows in the figure. Tap water flows directly through the main pipeline 6 without flowing into the soft water tank 7, and normal water is output.

[0046] 2. For example Figure 2 , Figure 4 As shown, when water is supplied and the soft water mode is activated, the control system opens the first valve 10 and the third valve 30 (no control is needed when the third valve 30 is a one-way valve), while closing the main valve 60, the second valve 20, the fourth valve 40, and the fifth valve 50, as indicated by the arrows in the figure. Tap water flows through the first branch 1 and into the soft water tank 7 from the soft water inlet 11. The softening resin in the tank adsorbs calcium and magnesium ions in the water, reducing the water hardness. Then, it flows from the soft water tank outlet 72 of the soft water tank 7 into the third branch 3, and then into the main pipeline 6, outputting softened water.

[0047] 3. For example Figure 2 , Figure 5 As shown, when the regeneration mode is activated, it automatically switches to the regeneration and water replenishment stage. The control system closes the first valve 10 and the fifth valve 50, and opens the main valve 60, the second valve 20, and the fourth valve 40. The third valve 30 can be opened or closed (no control is needed when the third valve 30 is a one-way valve). As shown by the arrow in the figure, the tap water flows through the main pipeline 6 and sequentially through the second valve 20 of the second branch 2, the suction port 211 on the side of the venturi pipe 21, the fourth valve 40 of the fourth branch 4, and the brine suction pipe 43 of the brine tank 42 to enter the brine tank 42 and replenish the water stored in the brine tank 42.

[0048] 4. For example Figure 2 , Figure 6 As shown, after the regeneration and water replenishment are completed, the system automatically switches to the regeneration and salt dissolution stage. The control system opens the main valve 60 and closes the first valve 10, the second valve 20, the third valve 30 (no control is needed when the third valve 30 is a one-way valve), the fourth valve 40, and the fifth valve 50, as indicated by the arrows in the figure. Tap water flows directly through the main pipeline 6, and the newly replenished tap water in the salt tank 42 dissolves the regenerated salt to form a high-concentration brine.

[0049] 5. For example Figure 2 , Figure 7As shown, after the regeneration salt dissolution is completed, the system automatically switches to the regeneration salt washing stage. The control system opens the main valve 60, the second valve 20, the fourth valve 40, and the fifth valve 50, and closes the first valve 10. The third valve 30 can be opened or closed (no control is needed when the third valve 30 is a one-way valve). As shown by the arrow in the figure, tap water flows through the main pipeline 6 and sequentially through the second valve 20 of the second branch 2 and the venturi pipe 21 into the softened water tank 7. When the tap water flows rapidly through the venturi pipe 21, a negative pressure is formed at the suction port 211 on its side, which draws the high-concentration brine from the salt tank 42 into the venturi pipe 21 through the salt suction pipe 43, the fourth branch 4, and the suction port 211. After mixing with the tap water, it flows into the softened water tank 7, where high-concentration positive ions (such as sodium ions) replace the calcium and magnesium ions on the surface of the softening resin, reactivating the softening resin. The regeneration wastewater is then discharged through the fifth valve 50 of the fifth branch 5 and the drain pipe 52.

[0050] 6. For example Figure 2 , Figure 8 As shown, after the regeneration salt washing is completed, the system automatically switches to the regeneration rinsing stage. The control system opens the main valve 60, the first valve 10, and the fifth valve 50, and closes the second valve 20 and the fourth valve 40. The third valve 30 can be opened or closed (no control is needed when the third valve 30 is a one-way valve). As shown by the arrow in the figure, the tap water flows through the main pipeline 6 and the first valve 10 of the first branch 1 into the soft water tank 7 to flush the softening resin and remove excess salt or dirt. The wastewater is then discharged through the fifth valve 50 of the fifth branch 5 and the drain pipe 52.

[0051] 7. For example Figure 3 As shown, after the regeneration flushing is completed, the control system opens the main valve 60, closes the first valve 10, the second valve 20, the third valve 30 (no control is required when the third valve 30 is a one-way valve), the fourth valve 40, and the fifth valve 50, matches the cycle water production volume (i.e., the usable soft water volume) according to the tap water hardness value set in the program, and exits the regeneration mode.

[0052] When the soft water system provided by this utility model is connected to a water heater, the flow rate of the water outlet 62 of the main pipeline 6 can be measured by a flow sensor during the above process. When the flow rate is greater than the start-up flow rate of the water heater, the heating device of the water heater is activated to heat the tap water. In addition, in soft water mode, the soft water flow rate can be monitored in real time and the amount of soft water accumulated by the flow sensor.

[0053] Nano-microbubble water possesses bactericidal and deep-cleaning properties, and does not produce substances harmful to the human body, making it a new trend in the water treatment industry. However, currently, there are no water softening devices on the market that also feature microbubble functionality. Therefore, in a preferred embodiment of this invention, the water softening system can provide microbubble softened water. Specifically, as... Figure 2As shown, the soft water tank 7 comprises a tank body 70, which is provided with an opening only at the bottom end, and is provided with an air inlet one-way valve 73 at the top end for one-way air inlet into the tank body 70. A vertical flow guide pipe 74 is arranged in the tank body 70, the bottom end of the flow guide pipe 74 is the soft water tank inlet 71, and the soft water tank outlet 72 is formed between the bottom end of the flow guide pipe 74 and the opening. The flow guide pipe 74 is filled with softening resin 75 between the inner wall of the flow guide pipe 74 and the inner wall of the tank body 70. The top of the softening resin 75 and the top of the tank body 70 form an air chamber 76, and the air inlet one-way valve 73 is in communication with the air chamber 76. The top end of the flow guide pipe 74 is provided with a spray head 77, and the spray head 77 is located in the air chamber 76. Further, the spray head 77 is provided with a strip-shaped water outlet hole on the side.

[0054] As shown in the drawings, Figure 2 , Figure 4 In this embodiment, when the soft water system is in the soft water mode, the control system turns on the first valve 10 and the third valve 30, and closes the main valve 60, the second valve 20, the fourth valve 40 and the fifth valve 50. Tap water flows through the first branch 1 and flows into the flow guide pipe 74 of the soft water tank 7 from the soft water inlet 11, is sprayed from the spray head 77 to form a fountain-shaped water strip, mixes with the air in the air chamber 76 at the top of the soft water tank 7 to form micro-bubble water with an air-liquid mixing ratio of about 1% to 3%, and at the same time, the softening resin in the tank absorbs calcium and magnesium ions in the water to reduce the water hardness, and then flows into the third branch 3 from the soft water tank outlet 72 of the soft water tank 7, and then flows into the main pipeline 6 to output micro-bubble soft water, realizing the double water purification effect of soft water and micro-bubble.

[0055] In order to measure the liquid level in the air chamber 76, and then obtain the volume of gas in the air chamber 76, as shown in the drawings, Figure 2 In an embodiment of the utility model, the inner wall of the air chamber 76 is provided with a liquid level sensor 78. The optimal distance of the detection part of the liquid level sensor 78 from the top of the soft water tank 7 is 20 to 50 mm, which is used to identify whether there is sufficient air in the soft water tank 7.

[0056] In this embodiment, the micro-bubble function running process in the soft water tank 7 is as follows:

[0057] 1. Start the micro-bubble function and enter the micro-bubble standby mode, and turn on the main valve 60.

[0058] 2. As shown in the drawings, Figure 9As shown, in the microbubble standby mode, if the level sensor 78 detects that the water level in the soft water tank 7 is high, it indicates that the air volume in the tank is insufficient. The control system then activates the fifth valve 50. Since the air inlet check valve 73 at the top of the soft water tank 7 is connected to the atmosphere, the water in the soft water tank 7 flows out through the fifth valve 50 and the drain pipe 52 under the action of gravity, and a negative pressure is formed in the top of the soft water tank 7. External air enters the top of the soft water tank 7 through the air inlet check valve 73, realizing microbubble inflation, as shown by the arrow direction in the figure.

[0059] 3. During the microbubble inflation stage described above, when the inflation time reaches the programmed inflation time, the control system closes the fifth valve 50 to stop inflation. The programmed inflation time is determined by experimental sampling, with an optimal inflation volume greater than 1 liter. If the level sensor 78 detects that the water level in the soft water tank 7 is still at a high level, it indicates that inflation has failed, and the control system will issue an inflation fault alarm.

[0060] 4. For example Figure 4 As shown, after the microbubble inflation is completed, if the flow sensor detects that the water flow rate is greater than the start-up flow rate, it is determined that the user is using water. The control system then opens the first valve 10 and closes the main valve 60, the second valve 20, the fourth valve 40, and the fifth valve 50, as indicated by the arrows in the figure. Tap water flows through the first branch 1 and into the guide pipe 74 of the soft water tank 7 from the soft water inlet 11. It is sprayed out from the nozzle 77, forming a fountain-like water strip. It mixes with the air in the air chamber 76 at the top of the soft water tank 7 to form microbubble water with a gas-liquid mixing ratio of about 1% to 3%. At the same time, the softening resin in the tank adsorbs calcium and magnesium ions in the water, reducing the water hardness. Then, it flows from the soft water tank outlet 72 of the soft water tank 7 into the third branch 3, and then into the main pipeline 6, outputting microbubble softened water.

[0061] 5. In microbubble operation mode, if the flow sensor detects that the water flow rate is less than the start-up flow rate, it is determined that the user has turned off the water. The control system then closes the first valve 10, the second valve 20, the third valve 30, the fourth valve 40, and the fifth valve 50, and opens the main valve 60, switching to microbubble standby mode.

[0062] The soft water system provided in this embodiment can use gravity drainage to fill the air chamber 76 of the soft water tank 7 to achieve the microbubble function and output microbubble softened water. The microbubble generating device is integrated with the softening tank 7, which has a simple and compact structure and low manufacturing, operation and maintenance costs.

[0063] like Figure 2 As shown, in one embodiment of the present invention, a grid 79 is provided inside the outlet 72 of the soft water tank to prevent the softening resin 75 inside the soft water tank 7 from leaking out.

[0064] like Figure 10As shown, the utility model also provides a water heater, including above-mentioned soft water system. The water heater is equipped with heating device 8, and the both ends of heating device 8 are connected with cold water pipe 81 and hot water pipe 82 respectively. The water inlet 61 and water outlet 62 of main pipeline 6 are connected on the cold water pipe 81. The heating mode of heating device 8 is not specifically defined, and its heat source can be gas, electricity, solar energy and the like.

[0065] The existing soft water device and water heater integrated design, still need to additionally install conversion valve, to be able to close soft water waterway during regeneration process, and guide hot water waterway, ensure that hot water is normally used, this increases the cost of product. And in the embodiment, the water heater can realize the opening and closing of the soft water waterway by the on-off of each valve of the soft water control valve assembly, without the need to install a conversion valve, reducing the cost of the product.

[0066] As shown in the drawings, Figure 10 In an embodiment of the utility model, the cold water pipe 81 is provided with a flow sensor 83.

[0067] As shown in the drawings, Figure 10 In an embodiment of the utility model, a bubble generator 84 for improving bubble effect can also be provided on the water terminal outside the water heater.

[0068] As shown in the drawings, Figure 10 In an embodiment of the utility model, the salt tank 42 can be located outside the water heater housing.

[0069] As shown in the drawings, Figure 10 In an embodiment of the utility model, the main valve 60, the first valve 10, the second valve 20, the third valve 30, the fourth valve 40, the fifth valve 50 and the flow sensor 83 are electrically connected with the display controller 9. The display controller 9 is provided with a temperature setting key for changing the water temperature, a soft water key for starting the soft water function, a regeneration key for starting the regeneration function and a micro-bubble key for starting the micro-bubble function. More preferably, the display controller 9 is provided with state indicator lights for soft water amount and regeneration stages, such as water replenishment, salt dissolution, salt washing and flushing. Further, the display controller 9 has a clock function and can set the automatic regeneration time. When the cumulative soft water amount reaches the program limit value and the machine clock reaches the program automatic regeneration time, the regeneration function is automatically started. The program working time of each stage (water replenishment, salt dissolution, salt washing and flushing) in the regeneration mode can be adjusted by the display controller 9 to meet the regeneration water demand under different water pressure conditions.

[0070] The above description is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A soft water control valve assembly, characterized by, The main pipe (6) is provided with a main valve (60), a first branch (1), a second branch (2), and a third branch (3); the first branch (1) is provided with a first valve (10) and a soft water inlet (11); the second branch (2) is provided with a second valve (20) and a Venturi tube (21); the third branch (3) is provided with a third valve (30) and a soft water outlet (31). The Venturi tube (21) is provided with a suction inlet (211) connected to a fourth branch (4) provided with a fourth valve (40) and a salt water inlet (41); the third branch (3) between the third valve (30) and the soft water outlet (31) is connected to a fifth branch (5) provided with a fifth valve (50) and a sewage outlet (51).

2. The soft water control valve assembly of claim 1, wherein, The main valve (60), the first valve (10), the second valve (20), the third valve (30), the fourth valve (40), and the fifth valve (50) are all electromagnetic valves.

3. The soft water control valve assembly of claim 1, wherein, The third valve (30) is a one-way valve, allowing water in the third branch (3) to flow to the main pipe (6).

4. The soft water control valve assembly of claim 1, wherein, The diameter of the Venturi tube (21) is smaller than that of the first valve (10).

5. A water softening system characterised in that, The soft water control valve assembly according to any one of claims 1 to 4, a soft water tank (7), a salt tank (42), and a sewage pipe (52). The soft water tank (7) is provided with a soft water tank inlet (71) connected to the soft water inlet (11) and a soft water tank outlet (72) connected to the soft water outlet (31); the salt tank (42) is provided with a salt suction pipe (43) connected to the salt water inlet (41); and the sewage pipe (52) is connected to the sewage outlet (51).

6. The water softening system of claim 5, wherein The soft water tank (7) comprises a tank body (70), the bottom end of the tank body (70) is provided with an opening, and the top end of the tank body (70) is provided with an air inlet one-way valve (73); A vertical flow guide pipe (74) is arranged in the tank body (70), the bottom end of the flow guide pipe (74) is the soft water tank inlet (71), and the bottom end of the flow guide pipe (74) and the opening form the soft water tank outlet (72); The flow guide pipe (74) and the inner wall of the tank body (70) are filled with softening resin (75); The top of the softening resin (75) and the top of the tank body (70) form an air chamber (76), and the air inlet one-way valve (73) communicates with the air chamber (76); The top end of the flow guide pipe (74) is provided with a spray head (77), and the spray head (77) is located in the air chamber (76).

7. The water softening system of claim 6, wherein The inner wall of the air chamber (76) is provided with a liquid level sensor (78).

8. The soft water system of claim 6, wherein, The soft water tank outlet (72) is provided with a grid (79); And / or, the side of the spray head (77) is provided with a strip-shaped water outlet hole.

9. A water heater, characterized by The soft water system comprises a water heater (1), a main pipeline (6) and a soft water tank (7); the water heater (1) is provided with a heating device (8), and the heating device (8) is connected with a cold water pipe (81) and a hot water pipe (82) at two ends respectively; the water inlet (61) and the water outlet (62) of the main pipeline (6) are connected to the cold water pipe (81).

10. The water heater of claim 9, wherein, The cold water pipe (81) is provided with a flow sensor (83).

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