Direct drinking water sub-machine

Abstract

The utility model provides a kind of direct drinking water sub-machine, the cold tap and hot tap of the direct drinking water sub-machine of the utility model are self-resetting check valve;Flow limiting device is set between ball valve and two-position three-way electromagnetic valve;The diameter of flow limiting device inner chamber gradually decreases along water flow direction, flow limiting device outlet pipe is inserted into flow limiting device inner chamber, first spring is set between the outer wall of flow limiting device outlet pipe and the wall of flow limiting device inner chamber, and float ball is set on first spring;The first end of first spring is in abutment with the bottom of flow limiting device inner chamber, the second end of first spring is in abutment with float ball, and the diameter of float ball is greater than the diameter of first spring and less than the maximum diameter of flow limiting device inner chamber.The utility model can avoid that external air and water backflow to direct drinking water sub-machine pollute direct drinking water sub-machine, water supply pipe network and drinking water purification system, can provide stable high-quality purified water, and ensure the drinking water quality of long-distance conveying high-quality drinking water mode purified water system.

Description

Technical Field

[0001] This utility model belongs to the field of drinking water technology, and in particular relates to a direct drinking water analyzer. Background Technology

[0002] Existing direct drinking water dispensers include a three-way connector, a ball valve, a two-position three-way solenoid valve, a heating element, a cold water faucet, and a hot water faucet. Water is drawn from the direct drinking water supply network of the water purification system via the three-way connector and the ball valve. The first end of the two-position three-way solenoid valve is connected to the ball valve, and the second end is connected to the cold water faucet for direct drinking water. The third end of the two-position three-way solenoid valve is connected to the heating element; the direct drinking water is heated in the heating element and then dispensed as hot water through the hot water faucet. The steam outlet of the heating element is connected to an expandable and contractible air bladder, and water vapor is discharged through a steam valve at the end of the air bladder.

[0003] Existing direct drinking water water dispensers have the following problems:

[0004] Drinking water purification systems typically connect multiple direct drinking water dispensers, each with different locations and water dispensing times. When the drinking water purification system malfunctions or experiences a water outage, if the dispensers at different heights are turned on, water in the higher-level pipe network flows down to the lower levels. Air can then enter the dispensers through the faucets at the higher levels, causing contamination of the dispensers, the drinking water supply network, and the entire drinking water purification system, thus affecting water quality.

[0005] When the ball valve malfunctions or is fully open, the water flow is large, and a large amount of pressurized water enters the heating tank and / or air bladder, which can damage the heating tank and / or air bladder. If the heating tank and / or air bladder ruptures, water will rush into the water dispenser, which can damage other equipment in the dispenser or cause an electrical fire.

[0006] At the same time, when there is a large amount of water in the heating tank, a large amount of water vapor is generated. If a large amount of water vapor enters the air bag, it may cause the air bag to rupture or the water vapor to break through the steam valve and rush into the water purifier unit, which may also cause damage to other equipment or cause electrical fires. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a direct drinking water water purifier that can avoid contamination within the purifier itself and the direct drinking water supply network, and can provide stable, high-quality purified water.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A direct drinking water dispenser includes a main body, which contains a three-way connector, a ball valve, a two-position three-way solenoid valve, a heating element, a cold water faucet, a hot water faucet, an air bladder, and a steam valve. The first end of the two-position three-way solenoid valve is connected to the ball valve, the second end is connected to the cold water faucet, the third end is connected to the inlet of the heating element, the outlet of the heating element is connected to the hot water faucet via the solenoid valve, the steam outlet of the heating element is connected to the air inlet of the air bladder, and the air outlet of the air bladder is connected to the air inlet pipe of the steam valve.

[0010] Both the cold water faucet and the hot water faucet are self-resetting check valves;

[0011] A flow limiting device is installed between the ball valve and the first end of the two-position three-way solenoid valve;

[0012] The diameter of the inner cavity of the flow limiting device gradually decreases along the water flow direction. The outlet pipe of the flow limiting device extends into the inner cavity of the flow limiting device. A first spring is installed between the outer wall of the outlet pipe and the inner wall of the flow limiting device, and a float is installed on the first spring. The first end of the first spring abuts against the bottom of the inner cavity of the flow limiting device, and the second end of the first spring abuts against the float. The inner cavity of the flow limiting device is connected to a ball valve, and the outlet pipe of the flow limiting device is connected to a two-position three-way solenoid valve.

[0013] The diameter of the float is larger than the diameter of the first spring, but smaller than the maximum diameter of the inner cavity of the flow limiting device.

[0014] The cold and hot water taps of this utility model's direct drinking water water dispenser are both self-resetting one-way valves. Air and water can only flow out of the dispenser through the taps, while external air and water cannot enter the dispenser. This prevents external air and water from flowing back into the dispenser and causing pollution to the dispenser, water supply network, and drinking water purification system. This utility model's direct drinking water dispenser can provide stable, high-quality purified water, ensuring the drinking water quality of the remote high-quality drinking water delivery mode water purification system and protecting human health.

[0015] When the ball valve malfunctions or is fully open, resulting in a large flow of water entering the water dispenser, the water flows through the limit valve cavity, the float sinks, compresses the spring, and the water passage is reduced, which can reduce the water flow through the two-position three-way solenoid valve, that is, the amount of water entering the water dispenser is reduced.

[0016] This invention can avoid the problem of high water flow damaging the direct drinking water dispenser and improve the safety of the direct drinking water dispenser.

[0017] Furthermore, a through groove is formed on the portion of the outlet pipe of the flow limiting device that extends into the inner cavity of the flow limiting device.

[0018] Furthermore, the steam valve inlet pipe extends into the inner cavity of the steam valve, a first gasket is provided at the top of the steam valve inlet pipe, and a second spring is provided at the top of the first gasket; the diameter of the first gasket is larger than the inner diameter of the steam valve inlet pipe; the steam valve top cover seals the top of the steam valve, and the steam valve outlet pipe is perpendicular to the steam valve inlet pipe; the first end of the second spring abuts against the first gasket, and the second end of the second spring abuts against the steam valve top cover.

[0019] When the heating element is heating, steam enters the steam valve inlet pipe through the air bladder, pushing the first gasket to compress the spring. At this time, the steam can be discharged through the steam valve outlet pipe. When the heating element is not heating, the first gasket is not under pressure, and no steam is discharged. Because the first gasket seals the steam valve inlet pipe, external air cannot enter the air bladder through the steam valve outlet pipe, thus preventing external air from contaminating the direct drinking water water dispenser.

[0020] Furthermore, a first sealing ring is installed inside the top cover of the steam valve.

[0021] A sealing ring is installed inside the top cover of the steam valve to enhance the sealing effect of the steam valve, prevent water vapor from spraying out from the top of the steam valve, improve the safety of the direct drinking water dispenser, and protect the safety of users.

[0022] Furthermore, it also includes a water collection box, which is movably connected to the bottom of the direct drinking water dispenser body.

[0023] Furthermore, the main body of the direct drinking water dispenser is equipped with an external drain port and a baffle. A flow channel is formed between the external drain port and the baffle. The external drain port is located on the top mesh cover of the water receiving box. The external drain port is connected to the external drain pipe. The first end of the steam pipe is connected to the steam valve outlet pipe, and the second end of the steam pipe is sleeved inside the external drain pipe.

[0024] The steam and water generated by the heating element are discharged into the water collection box through the steam pipe. A baffle is installed on the water collection box, forming a flow channel between the baffle and the external discharge port. The flow channel guides the steam and water flowing out of the external discharge port into the water collection box, preventing the steam and water from spraying out; avoiding scalding for users, protecting user safety, and improving the safety of the direct drinking water dispenser.

[0025] Furthermore, the drain outlet at the bottom of the water collection box is connected to a straight drain pipe. Water inside the water collection box is discharged through the straight drain pipe.

[0026] Furthermore, the water receiving box has low and high water level lines on its side wall, and a liquid level sensor is installed inside the box. The drain outlet at the bottom of the box is connected to a drain pump via a pipe. When the water level in the box reaches the high water level line, the controller of the water dispenser starts the drain pump to drain the water and prevent overflow. When the water level in the box is at the low water level line, the controller shuts off the drain pump to prevent it from running dry.

[0027] Furthermore, the direct drinking water dispenser is also equipped with a voice broadcaster, which is connected to the main controller of the water purification system, and data is exchanged between the voice broadcaster and the main controller of the water purification system.

[0028] Furthermore, a self-resetting check valve is installed between the third end of the two-position three-way solenoid valve and the heating element to prevent backflow of water vapor generated in the heating element.

[0029] Furthermore, both the cold water faucet and the hot water faucet include a first pipe body and a second pipe body;

[0030] The first pipe is a right-angle bend, and a faucet inlet channel is formed inside the first pipe. The first end of the first pipe is connected to the second end of a two-position three-way solenoid valve or the outlet of the heating element. The second end of the first pipe is connected to the first end of the second pipe. A second gasket is provided between the second end of the first pipe and the first end of the second pipe. A water passage hole is provided in the middle of the second gasket. The second end of the first pipe extends outward along the diameter direction to form a convex ring.

[0031] The connection between the first tube and the second tube is fixed by a fastener, one end of which is sleeved on the protruding ring, and the fastener is threaded to the outer wall of the second tube.

[0032] The second tube is divided into a second tube inner cavity and a faucet outlet channel along the water flow direction. A piston and a third spring are arranged in sequence along the water flow direction in the second tube inner cavity. A protrusion is provided in the second tube inner cavity along the axial direction of the second tube. A groove with a diameter smaller than the outer diameter of the piston is provided at one end of the piston near the third spring. The first end of the third spring is located in the groove and abuts against the piston. The second end of the third spring abuts against the protrusion. The end of the piston away from the third spring abuts against the second gasket.

[0033] Furthermore, a second sealing ring is provided between the convex ring and the second gasket; a third sealing ring is provided between the second gasket and the first end of the second tube body.

[0034] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0035] This invention can prevent external air and water from flowing back into the direct drinking water dispenser and causing pollution to the dispenser, water supply network, and drinking water purification system. It can provide stable, high-quality purified water, ensure the drinking water quality of the remote high-quality drinking water delivery mode water purification system, and protect human health.

[0036] This invention can avoid the problem of high water flow damaging the direct drinking water dispenser and improve the safety of the direct drinking water dispenser. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the direct drinking water water dispenser supply process according to an embodiment of the present utility model;

[0038] Figure 2 This is an external view of the baffle-less direct drinking water dispenser according to an embodiment of the present utility model;

[0039] Figure 3 This is an external view of a direct drinking water dispenser with a baffle according to an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the internal structure of the direct drinking water dispenser according to an embodiment of the present invention;

[0041] Figure 5 This is a perspective view of a direct drinking water water analyzer according to an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram showing the connection between the steam pipe and the external discharge pipe in an embodiment of this utility model;

[0043] Figure 7 This is a schematic diagram of a baffle-less water receiving box with straight discharge according to an embodiment of the present utility model;

[0044] Figure 8 This is a schematic diagram of a water receiving box with a baffle in a straight discharge configuration according to an embodiment of the present utility model;

[0045] Figure 9 This is a schematic diagram of the water receiving box pump assembly according to an embodiment of the present utility model;

[0046] Figure 10 This is a schematic diagram of the water receiving box according to an embodiment of the present utility model;

[0047] Figure 11 This is an external view of the airbag according to an embodiment of the present utility model;

[0048] Figure 12 This is a cross-sectional view of the connection between the airbag and the steam valve in an embodiment of this utility model;

[0049] Figure 13 This is an exploded view of the steam valve according to an embodiment of the present invention;

[0050] Figure 14 This is a cross-sectional view of the steam valve according to an embodiment of the present utility model;

[0051] Figure 15 This is a cross-sectional view of the current limiting device according to an embodiment of the present utility model;

[0052] Figure 16 This is an exploded view of the current limiting device according to an embodiment of the present invention;

[0053] Figure 17 The following are external views of the cold water faucet and hot water faucet according to embodiments of this utility model;

[0054] Figure 18 This is a cross-sectional view of a cold water faucet and a hot water faucet according to an embodiment of the present utility model;

[0055] Figure 19 Exploded views of the cold water faucet and hot water faucet according to embodiments of this utility model;

[0056] Figure 20 This is a cross-sectional view of the second pipe body of the cold water faucet and hot water faucet according to an embodiment of the present utility model;

[0057] Figure 21 This is a cross-sectional view of the first pipe body of the cold water faucet and hot water faucet according to an embodiment of the present utility model.

[0058] In the diagram: 1-Direct drinking water supply network, 2-Ball valve, 3-Voice announcer, 4-Two-position three-way solenoid valve, 41-Flow limiting device, 42-First spring, 43-Float, 411-Flow limiting device inner cavity, 412-Flow limiting device outlet pipe, 5-Heating tank, 6-Airbag, 7-Steam valve, 71-Steam valve inlet pipe, 72-Steam valve outlet pipe, 73-Steam valve inner cavity, 74-First gasket, 75-Second spring, 76-First sealing ring, 77-Steam valve top cover, 78-Steam pipe, 8-Water collection box, 81-Water collection box drain outlet, 82-Low water level line, 83-High water level line, 9-Cold water faucet, 10-Hot water faucet, 11- 12-Drain pump, 13-External drain pipe, 14-Baffle, 15-Top mesh cover of water collection box, 16-Direct drinking water dispenser body, 161-External outlet, 17-T-connector; 18-Cold water dispensing button, 19-Hot water dispensing button; 91-First pipe body, 92-Second pipe body, 93-Fixing component, 94-Second gasket, 95-Second sealing ring, 96-Third sealing ring; 911-Faucet inlet channel, 912-Protruding ring, 921-Faucet outlet channel, 922-Third spring, 923-Piston, 9231-Groove, 924-Second pipe inner cavity, 925-Protrusion, 941-Water passage hole, 20-Solenoid valve. Detailed Implementation

[0059] The present invention will be described in detail below with reference to the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other. For ease of description, the words "up," "down," "left," and "right" appearing below only indicate that they are consistent with the up, down, left, and right directions of the drawings themselves, and do not limit the structure.

[0060] Example

[0061] like Figure 2 , Figure 3 , Figure 4 , Figure 5This embodiment provides a direct drinking water dispenser, including a direct drinking water dispenser body 16 and a water receiving box 8, which is movably connected to the bottom of the direct drinking water dispenser body 16.

[0062] The direct drinking water dispenser body 16 contains a three-way connector 17, a ball valve 2, a two-position three-way solenoid valve 4, a heating element 5, a cold water faucet 9, a hot water faucet 10, an air bladder 6, and a steam valve 7; For example... Figure 1 , Figure 4 The first end of the three-way connector 17 is connected to the inlet of the direct drinking water supply network 1, the second end of the three-way connector 17 is connected to the outlet of the direct drinking water supply network 1, the third end of the three-way connector 17 is connected to the inlet of the solenoid valve 4, the first end of the two-position three-way solenoid valve 4 is connected to the outlet of the ball valve 2, the second end of the two-position three-way solenoid valve 4 is connected to the cold water faucet 9, the third end of the two-position three-way solenoid valve 4 is connected to the inlet of the hot water tank 5, the outlet of the hot water tank 5 is connected to the hot water faucet 10 through the solenoid valve 20, the steam outlet of the hot water tank 5 is connected to the air inlet of the air bag 6, and the air outlet of the air bag 6 is connected to the steam valve inlet pipe 71.

[0063] The cold water faucet 9 is a self-resetting one-way valve type cold water faucet, and the hot water faucet 10 is a self-resetting one-way valve type hot water faucet. Air and water can only flow out of the direct drinking water dispenser through the cold water faucet or the hot water faucet. External air and water cannot enter the direct drinking water dispenser through the faucet, which can prevent external air and water from flowing back into the direct drinking water dispenser and causing pollution to the direct drinking water dispenser, water supply network, and drinking water purification system. This embodiment can provide stable high-quality purified water, ensuring the drinking water quality of the remote delivery high-quality drinking water purification system and protecting human health.

[0064] A flow limiting device 41 is provided between the ball valve 2 and the first end of the two-position three-way solenoid valve 4. For example... Figure 15 , Figure 16 The diameter of the inner cavity 411 of the flow limiting device gradually decreases along the direction of water flow. The outlet pipe 412 of the flow limiting device extends into the inner cavity 411 of the flow limiting device. A first spring 42 is provided between the outer wall of the outlet pipe 412 of the flow limiting device and the inner wall of the flow limiting device. A float 43 is provided on the first spring 42. The first end of the first spring 42 abuts against the bottom of the inner cavity 411 of the flow limiting device, and the second end of the first spring 42 abuts against the float 43.

[0065] The inner cavity 411 of the flow limiting device is connected to the ball valve 2, and the outlet pipe 412 of the flow limiting device is connected to the two-position three-way solenoid valve 4. The diameter of the float 43 is larger than the diameter of the first spring 42, and the diameter of the float 43 is smaller than the maximum diameter of the inner cavity 411 of the flow limiting device.

[0066] In some implementations of this embodiment, the inner diameter of the outlet end of the ball valve 2 is smaller than the maximum diameter of the inner cavity 411 of the flow limiting device; the diameter of the float 43 is larger than the inner diameter of the outlet end of the ball valve 2, the diameter of the float 43 is larger than the diameter of the first spring 42, and the diameter of the float 43 is smaller than the maximum diameter of the inner cavity 411 of the flow limiting device.

[0067] In some implementations of this embodiment, a through groove is formed on the portion of the outlet pipe 412 of the flow limiting device that extends into the inner cavity 411 of the flow limiting device.

[0068] In some implementations of this embodiment, the first spring 42 is sleeved on the outer wall of the outlet pipe 412 of the flow limiting device.

[0069] When the ball valve malfunctions or is fully open, resulting in a large flow of water entering the water dispenser, the water flows through the limit valve cavity, the float sinks, presses the first spring, and the water passage is reduced, which can reduce the water flow through the two-position three-way solenoid valve, that is, the amount of water entering the water dispenser is reduced.

[0070] This embodiment can avoid the problem of high water flow damaging the direct drinking water water dispenser, thus improving the safety of the direct drinking water water dispenser.

[0071] like Figure 11 , Figure 12 , Figure 13 , Figure 14 The steam valve inlet pipe 71 extends into the inner cavity 73 of the steam valve. A first gasket 74 is provided at the top of the steam valve inlet pipe 71, and a second spring 75 is provided at the top of the first gasket 74. The diameter of the first gasket 74 is larger than the inner diameter of the steam valve inlet pipe 71. The steam valve top cover 77 seals the top of the steam valve 7, and the steam valve outlet pipe 72 is perpendicular to the steam valve inlet pipe 71. A first sealing ring 76 is provided inside the steam valve top cover 77.

[0072] The first end of the second spring 75 abuts against the first gasket 74, and the second end of the second spring 75 abuts against the steam valve top cover 77.

[0073] When the heating element is heating, steam enters the steam valve inlet pipe through the air bladder, pushing the first gasket to compress the spring. At this time, the steam can be discharged through the steam valve outlet pipe. When the heating element is not heating, the first gasket is not under pressure, and no steam is discharged. Because the first gasket seals the steam valve inlet pipe, external air cannot enter the air bladder through the steam valve outlet pipe, thus preventing external air from contaminating the direct drinking water water dispenser.

[0074] like Figure 2 , Figure 6 , Figure 7The main body 16 of the direct drinking water dispenser has an external drain port 161 located on the top mesh cover 15 of the water receiving box. The external drain port 161 is connected to the external drain pipe 13. The first end of the steam pipe 78 is connected to the steam valve outlet pipe 72, and the second end of the steam pipe 78 is sleeved inside the external drain pipe 13. Water vapor and water generated by the heating element are discharged into the steam pipe 78 through the steam valve, and then flow into the water receiving box through the external drain pipe 13 and the external drain port 161. If the baffle 14 is not installed, water vapor and water generated by the heating element may spray out from the external drain port 161 when discharged through the external drain pipe 13 and the external drain port 161, causing scalding to the user.

[0075] In some implementations of this embodiment, such as Figure 3 , Figure 8 A baffle 14 is installed on the outer shell of the direct drinking water dispenser body 16, forming a flow guiding channel between the baffle 14 and the external drain 161. The flow guiding channel guides the water vapor and water flowing out of the external drain 161 into the water receiving box, preventing water vapor and water from spraying out; avoiding scalding of users, protecting user safety, and improving the safety of the direct drinking water dispenser.

[0076] In some implementations of this embodiment, such as Figure 8 , Figure 10 The drain outlet 81 at the bottom of the water collection box 8 is connected to the straight drain pipe 11, and the water in the water collection box 8 is discharged through the straight drain pipe.

[0077] In some implementations of this embodiment, the water collection box 8 is removed from the direct drinking water dispenser body 16, the water in the water collection box 8 is poured out, and then it is reinstalled on the direct drinking water dispenser body 16.

[0078] In some implementations of this embodiment, such as Figure 9 , Figure 10 The water receiving box 8 has a low water level line 82 and a high water level line 83 on its side wall. A liquid level sensor is installed inside the water receiving box 8. The drain outlet 81 at the bottom of the water receiving box 8 is connected to the drain pump 12 through a pipe. When the water level in the water receiving box reaches the high water level line 83, the controller of the direct drinking water dispenser starts the drain pump 12 to drain the water and prevent it from overflowing. When the water level in the water receiving box is at the low water level line 82, the controller of the direct drinking water dispenser shuts off the drain pump 12 to prevent it from running dry.

[0079] like Figure 2 The main body 16 of the direct drinking water dispenser is also equipped with a voice broadcaster 3, which is connected to the main controller of the water purification system, and data is exchanged between the voice broadcaster 3 and the main controller of the water purification system.

[0080] In some implementations of this embodiment, a self-resetting check valve is provided between the third end of the two-position three-way solenoid valve 4 and the heating element 5 to prevent the backflow of water vapor generated by the heating element.

[0081] In some implementations of this embodiment, both the cold water faucet 9 and the hot water faucet 10 are self-resetting one-way valves, such as... Figures 17-21 As shown, both the cold water faucet and the hot water faucet include a first pipe body 91, a second pipe body 92, a fixing member 93, and a second gasket 94. The first pipe body 91 is a right-angle bend (90-degree bend), and a water inlet channel 911 is formed inside the first pipe body 91. The first end of the first pipe body 91 is connected to the second end of the two-position three-way solenoid valve 4 or the outlet of the heating element 5. The second end of the first pipe body 91 is connected to the first end of the second pipe body 92. A second gasket 94 is provided between the second end of the first pipe body 91 and the first end of the second pipe body 92. A water passage hole 941 is provided in the middle of the second gasket 94. The second end of the first pipe body 91 extends outward along the diameter direction to form a convex ring 912.

[0082] The connection between the first tube body 91 and the second tube body 92 is fixed by a fastener 93. One end of the fastener 93 is sleeved on the protruding ring 912, and the fastener 93 is threaded to the outer wall of the second tube body 92.

[0083] A second sealing ring 95 is provided between the convex ring 912 and the second gasket 94; a third sealing ring 96 is provided between the second gasket 94 and the first end of the second tube body 92.

[0084] The second and third sealing rings seal the connection between the first and second pipe bodies, improving the sealing performance.

[0085] The second pipe body 92 is divided into a second pipe inner cavity 924 and a faucet outlet channel 921 along the water flow direction. A piston 923 and a third spring 922 are arranged in sequence along the water flow direction in the second pipe inner cavity 924. A protrusion 925 is provided in the second pipe inner cavity 924 along the axial direction of the second pipe body 92. A groove 9231 with a diameter smaller than the outer diameter of the piston 923 is provided at the end of the piston 923 near the third spring 922. The first end of the third spring 922 is located in the groove 9231 and abuts against the piston 923. The second end of the third spring 922 abuts against the protrusion 925. The end of the piston 923 away from the third spring 922 abuts against the second gasket 94.

[0086] Piston 923 is made of ceramic.

[0087] When the cold water dispensing button 18 or the hot water dispensing button 19 on the water dispenser is pressed, water flows from the dispenser to the cold or hot water faucet. The water pushes the piston, compressing the spring, and the water can then be discharged through the faucet. When no water is being dispensed, when the piston is impacted by fluid on the spring side, the piston abuts against the second washer, preventing fluid flow and keeping the cold or hot water faucet in a closed state. When the piston is impacted by fluid, the groove on the piston encloses the third spring, preventing contact displacement between the third spring and the piston during compression.

[0088] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A direct drinking water dispenser, comprising a direct drinking water dispenser body (16), wherein the direct drinking water dispenser body (16) is provided with a three-way connector (17), a ball valve (2), a two-position three-way solenoid valve (4), a heating element (5), a cold water faucet (9), a hot water faucet (10), an air bag (6), and a steam valve (7); the first end of the two-position three-way solenoid valve (4) is connected to the ball valve (2), the second end of the two-position three-way solenoid valve (4) is connected to the cold water faucet (9), the third end of the two-position three-way solenoid valve (4) is connected to the inlet of the heating element (5), the outlet of the heating element (5) is connected to the hot water faucet (10) through a solenoid valve (20), the steam outlet of the heating element (5) is connected to the air inlet of the air bag (6), and the air outlet of the air bag (6) is connected to the air inlet pipe (71) of the steam valve; Its features are, The cold water faucet (9) and the hot water faucet (10) are self-resetting check valves; A flow limiting device (41) is provided between the ball valve (2) and the first end of the two-position three-way solenoid valve (4). The diameter of the inner cavity (411) of the flow limiting device gradually decreases along the water flow direction. The outlet pipe (412) of the flow limiting device extends into the inner cavity (411). A first spring (42) is provided between the outer wall of the outlet pipe (412) and the wall of the inner cavity (411) of the flow limiting device. A float (43) is provided on the first spring (42). The first end of the first spring (42) abuts against the bottom of the inner cavity (411) of the flow limiting device, and the second end of the first spring (42) abuts against the float (43). The inner cavity (411) of the flow limiting device is connected to the ball valve (2), and the outlet pipe (412) of the flow limiting device is connected to the two-position three-way solenoid valve (4); The diameter of the float (43) is greater than the diameter of the first spring (42) and less than the maximum diameter of the inner cavity (411) of the flow limiting device.

2. The direct drinking water analyzer according to claim 1, characterized in that, A through groove is provided on the part of the outlet pipe (412) of the flow limiting device that extends into the inner cavity (411) of the flow limiting device.

3. The direct drinking water analyzer according to claim 1, characterized in that, The steam valve inlet pipe (71) extends into the steam valve cavity (73). A first gasket (74) is provided on the top of the steam valve inlet pipe (71), and a second spring (75) is provided on the top of the first gasket (74). The diameter of the first gasket (74) is larger than the inner diameter of the steam valve inlet pipe (71). The steam valve top cover (77) seals the top of the steam valve (7), and the steam valve outlet pipe (72) is perpendicular to the steam valve inlet pipe (71). The first end of the second spring (75) abuts against the first gasket (74), and the second end of the second spring (75) abuts against the steam valve top cover (77).

4. The direct drinking water analyzer according to claim 3, characterized in that, A first sealing ring (76) is provided inside the top cover (77) of the steam valve.

5. The direct drinking water analyzer according to claim 1, characterized in that, It also includes a water collection box (8), which is movably connected to the bottom of the direct drinking water dispenser body (16).

6. The direct drinking water analyzer according to claim 5, characterized in that, The main body (16) of the direct drinking water dispenser is provided with an external drain (161) and a baffle (14). A flow channel is formed between the external drain (161) and the baffle (14). The external drain (161) is located on the top mesh cover (15) of the water receiving box. The external drain (161) is connected to the external drain pipe (13). The first end of the steam pipe (78) is connected to the steam valve outlet pipe (72). The second end of the steam pipe (78) is sleeved inside the external drain pipe (13).

7. The direct drinking water analyzer according to claim 5, characterized in that, The drain outlet (81) at the bottom of the water collection box (8) is connected to the straight drain pipe (11).

8. The direct drinking water analyzer according to claim 5, characterized in that, The water receiving box (8) has a low water level line (82) and a high water level line (83) on its side wall. A liquid level sensor is installed inside the water receiving box (8). The drain outlet (81) at the bottom of the water receiving box (8) is connected to the drain pump (12) through a pipe.

9. The direct drinking water analyzer according to any one of claims 1-8, characterized in that, The main body (16) of the direct drinking water dispenser is also equipped with a voice broadcaster (3), which is connected to the main controller of the water purification system, and data is exchanged between the voice broadcaster (3) and the main controller of the water purification system.

10. The direct drinking water analyzer according to any one of claims 1-8, characterized in that, A self-resetting check valve is installed between the third end of the two-position three-way solenoid valve (4) and the heating element (5).

11. The direct drinking water analyzer according to any one of claims 1-8, characterized in that, Both the cold water faucet (9) and the hot water faucet (10) include a first pipe body (91) and a second pipe body (92). The first pipe (91) is a right-angle bend, and a faucet inlet channel (911) is formed inside the first pipe (91). The first end of the first pipe (91) is connected to the second end of the two-position three-way solenoid valve (4) or the outlet of the heating element (5). The second end of the first pipe (91) is connected to the first end of the second pipe (92). A second gasket (94) is provided between the second end of the first pipe (91) and the first end of the second pipe (92). A water passage hole (941) is provided in the middle of the second gasket (94). The second end of the first pipe (91) extends outward along the diameter direction to form a convex ring (912). The connection between the first tube body (91) and the second tube body (92) is fixed by a fastener (93). One end of the fastener (93) is sleeved on the protruding ring (912), and the fastener (93) is threaded to the outer wall of the second tube body (92). The second tube (92) is divided into a second tube inner cavity (924) and a faucet outlet channel (921) along the water flow direction. A piston (923) and a third spring (922) are arranged in the second tube inner cavity (924) along the water flow direction. A protrusion (925) is provided in the second tube inner cavity (924) along the axial direction of the second tube (92). A groove (9231) with a diameter smaller than the outer diameter of the piston (923) is provided at one end of the piston (923) near the third spring (922). The first end of the third spring (922) is located in the groove (9231) and abuts against the piston (923). The second end of the third spring (922) abuts against the protrusion (925). The end of the piston (923) away from the third spring (922) abuts against the second gasket (94).

12. The direct drinking water analyzer according to claim 11, characterized in that, A second sealing ring (95) is provided between the convex ring (912) and the second gasket (94); A third sealing ring (96) is provided between the second gasket (94) and the first end of the second tube (92).

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