Water inlet system and dish washing machine

Abstract

The invention relates to the technical field of water inlet failure, and provides a water inlet system and a dishwasher, the water inlet system comprises a water inlet valve, a failure response device and a water cup, and the water inlet valve is connected with the water cup through the failure response device. The failure response device comprises a base shell and a failure protection module, the base shell is provided with a mounting cavity, a water flow channel is formed in the mounting cavity, one end of the water flow channel is connected with the water inlet valve, the other end of the water flow channel is connected with the water cup, and water entering from the water inlet valve enters the water cup through the water flow channel. The failure protection module is at least partially mounted in the mounting cavity, and the failure protection module is configured to block the water flow channel when the water inlet valve fails and water is continuously supplied to the water cup so as to stop continuously supplying water to the water cup. According to the water inlet system provided by the embodiment of the invention, the situation of water flow overflow of the dish-washing machine due to failure of the water inlet valve can be effectively reduced or avoided, economic loss caused by water flow overflow is reduced or avoided, and the safety and reliability of the dish-washing machine are effectively improved.

Description

Technical Field

[0001] This application relates to the field of water ingress failure technology, and more particularly to a water ingress system and a dishwasher. Background Technology

[0002] With the continuous development of electrical appliance technology, the types of electrical appliances are becoming more and more diverse. Among them, cleaning equipment (such as dishwashers) can automatically clean kitchen utensils (such as bowls, chopsticks, pots and pans), effectively freeing up users' hands and bringing them a better cooking experience.

[0003] Dishwashers are typically equipped with a leak detection device to detect whether the dishwasher is leaking. Currently, this usually involves a float or electrode at the bottom of the dishwasher. When water accumulates at the bottom of the dishwasher, the detection device will detect the water and trigger an alarm, causing the system to terminate the washing program and shut off the water inlet valve.

[0004] However, in the dishwashers mentioned above, when the water inlet valve fails and continues to supply water, it is difficult to implement effective blocking measures. This will cause water to overflow due to the continuous supply of water from the water inlet valve, resulting in property damage to the user. Summary of the Invention

[0005] This application provides a water inlet system and a dishwasher that can effectively reduce or avoid water overflow caused by water inlet valve failure, thereby reducing or avoiding economic losses caused by water overflow and effectively improving the safety and reliability of the dishwasher.

[0006] One aspect of this application provides a water inlet system, comprising:

[0007] Inlet valve;

[0008] A failure response device, wherein the failure response device is connected to the inlet valve;

[0009] A water cup, which is connected to the failure response device, and water entering through the inlet valve flows into the water cup through the failure response device;

[0010] The failure response device includes:

[0011] The base shell has an installation cavity, in which a water flow channel is formed. One end of the water flow channel is connected to the water inlet valve, and the other end is connected to the water cup. Water entering through the water inlet valve enters the water cup through the water flow channel.

[0012] A fail-safe module, at least partially installed within the mounting cavity, is configured to block the water flow channel when the inlet valve fails and continues to supply water to the cup, thereby stopping the continued supply of water to the cup.

[0013] The water inlet system provided in this application embodiment includes a failure response device with a failure protection module. This module can close the internal water flow channel when the water inlet valve fails but continues to supply water to the cup, preventing water from entering and stopping the continuous water supply. This effectively reduces or avoids water overflow caused by water inlet valve failure, thus minimizing economic losses and improving the safety and reliability of the dishwasher.

[0014] In one possible implementation, the failure protection module includes a flow-stopping assembly, a balance bar, and a negative pressure assembly;

[0015] The balance bar is connected to the flow-stopping assembly, and the negative pressure assembly is connected to the balance bar;

[0016] The base shell also forms a first ventilation channel that is connected to the water flow channel. The first ventilation channel has a first air inlet at the end away from the water flow channel that is connected to the outside. The negative pressure component is installed at the first air inlet.

[0017] When the water inlet valve is working normally, the negative pressure component is closed in the first air inlet hole, and the negative pressure component provides support to the flow stop component through the balance bar, so that the flow stop component opens the water flow channel;

[0018] When the water inlet valve fails, a negative pressure is generated in the first ventilation channel. Under the action of the negative pressure, the negative pressure component opens the first air inlet and removes the support for the balance bar and the flow stop component, so that the flow stop component closes the water flow channel.

[0019] In one possible implementation, a second ventilation channel connected to the water flow channel is also formed inside the base shell, and the end of the second ventilation channel away from the water flow channel is connected to the outside.

[0020] When the water inlet valve is working normally, outside gas enters the water flow channel through the second ventilation channel, so that the negative pressure component is sealed in the first air inlet hole;

[0021] When the water inlet valve fails, the second ventilation channel is closed, so that negative pressure is generated in the first ventilation channel, causing the negative pressure component to open the first air inlet under the action of negative pressure and remove the support for the balance bar and the flow stop component.

[0022] In one possible implementation, the water flow channel includes a first flow section and a second flow section, the first flow section and the second flow section are connected, the first flow section is disposed near the end of the water inlet valve and is connected to the water inlet valve, and the second flow section is disposed near the water cup and is connected to the water cup.

[0023] The flow-stopping assembly includes a flow-stopping rod, one end of which has a first plug, and the other end is slidably hinged to the balance rod. When the inlet valve is working normally, the flow-stopping rod, under the support of the balance rod, drives the first plug away from the first flow section, so that the first flow section and the second flow section are connected to open the water flow channel.

[0024] When the inlet valve fails, the stop rod can drive the first plug to seal between the first flow section and the second flow section, thereby closing the water flow channel.

[0025] In one possible implementation, the flow-stopping component further includes a first elastic element;

[0026] One end of the first elastic element is connected to the first plug, and the other end is connected to the base shell. When the water inlet valve is working normally, the first elastic element is compressed between the first plug and the base shell, and when the balance bar removes the support force, it drives the first plug to move toward the first flow section to seal between the first flow section and the second flow section.

[0027] In one possible implementation, the water flow channel includes a large-diameter flow section and a small-diameter flow section that are interconnected, the large-diameter flow section being close to and connected to the inlet valve, and the inner diameter of the large-diameter flow section being larger than the inner diameter of the small-diameter flow section.

[0028] Both the first ventilation channel and the second ventilation channel are connected to the small-diameter section. When the water flowing into the inlet valve flows from the large-diameter section into the small-diameter section, a Venturi effect can be generated, so that the small-diameter section can draw in external gas through the first ventilation channel or the second ventilation channel.

[0029] When the inlet valve is functioning normally, external gas enters the narrow flow section through the second ventilation channel. When the inlet valve fails, the second ventilation channel is closed, and a negative pressure is generated in the first ventilation channel. Under the action of the negative pressure, the negative pressure component is pushed to move, thereby opening the first air inlet and removing the support of the balance bar by the negative pressure component. The gas then enters the narrow flow section through the first air inlet and the first ventilation channel.

[0030] In one possible implementation, a one-way sealing flap is provided at the portion of the first and second ventilation channels that communicates with the small-diameter flow section. The one-way sealing flap is located on the side close to the water flow channel and is configured to open only from one side of the first and second ventilation channels toward the water flow channel.

[0031] When the inlet valve fails and the water flow channel is closed, the one-way sealing flap closes under the action of water remaining in the small-diameter flow section to isolate the first ventilation channel and the water flow channel, thereby removing the negative pressure in the first ventilation channel, and the negative pressure component resets and closes the first air inlet.

[0032] In one possible implementation, the first ventilation channel and the second ventilation channel merge and communicate with the small flow section, and the one-way sealing flap seals the position where the first ventilation channel and the second ventilation channel merge.

[0033] In one possible implementation, a buffer channel is provided between the first ventilation channel and the second ventilation channel after they merge and the small flow section, and the one-way sealing flap is disposed in the buffer channel.

[0034] In one possible implementation, the second ventilation channel is connected to the water cup. When the water inlet valve fails and continues to supply water to the water cup, the water level in the water cup rises and flows into the second ventilation channel to close the second ventilation channel.

[0035] In one possible implementation, the negative pressure assembly includes a negative pressure actuating rod;

[0036] The negative pressure trigger rod passes through the first air inlet, and the end of the negative pressure trigger rod located in the first air exchange channel has a second plug;

[0037] When the inlet valve is working properly, outside gas enters the small flow section through the second ventilation channel, and the second plug seals the first air inlet hole.

[0038] When the inlet valve fails, the second ventilation channel is closed, and a negative pressure is generated in the first ventilation channel. This causes the second plug to move the negative pressure trigger rod toward the first ventilation channel and open the first air inlet. External gas enters the small flow section through the first air inlet and the first ventilation channel.

[0039] In one possible implementation, the negative pressure assembly further includes a second elastic element;

[0040] One end of the second elastic element is connected to the second plug, and the other end is connected to the inner wall of the first air exchange channel. The second elastic element is used to drive the second plug to seal on the first air inlet.

[0041] In one possible implementation, the negative pressure assembly further includes a slide bar;

[0042] One end of the slide rod is hinged to the balance rod, and the other end of the slide rod is sleeved on the negative pressure actuating rod and slides in cooperation with the negative pressure actuating rod;

[0043] The negative pressure actuating rod is configured to provide a limiting fixation for the slide bar when the water inlet valve is normal, so that the slide bar provides support for the balance bar;

[0044] When the inlet valve fails, the negative pressure actuating rod moves and removes its limiting effect on the slide bar, so that the slide bar removes its support for the balance bar.

[0045] In one possible implementation, the base shell is also formed with a mounting base;

[0046] At least a portion of the slide rod is slidably mounted in the mounting base, and one end of the slide rod extends out of the mounting base and is hinged to the balance bar. The end of the slide rod located in the mounting base cooperates with the negative pressure actuating rod.

[0047] The slide rod has a second through hole on the side wall at one end of the mounting base, and a limit ball is provided in the second through hole. The inner wall of the mounting base has a limit platform.

[0048] When the second plug is closed in the first air inlet, the negative pressure actuating rod pushes the limiting ball to move outward toward the slide rod and cooperates with the limiting platform to limit and fix the slide rod;

[0049] When the negative pressure actuator moves and opens the first air inlet, the negative pressure actuator retracts its push on the limiting ball, the limiting ball separates from the limiting platform, and the limiting fixation on the slide rod is released.

[0050] In one possible implementation, the negative pressure assembly further includes a third elastic element;

[0051] The third elastic element is sleeved on the slide rod, and one end of the third elastic element is connected to the slide rod, and the other end is connected to the inner wall of the mounting base;

[0052] The third elastic element is used to drive the slide bar to move toward the negative pressure triggering rod, so as to cooperate with the negative pressure triggering rod and restore the negative pressure triggering rod and the limiting ball to limit and fix the slide bar.

[0053] The elastic force of the third elastic element is greater than that of the second elastic element.

[0054] In one possible implementation, the negative pressure actuating rod includes a first segment and a second segment connected together;

[0055] The second plug is located on the first segment, and the diameter of the first segment is larger than the diameter of the second segment;

[0056] When the second plug is closed in the first air inlet, the first section is opposite to the limiting ball and pushes the limiting ball to move outward along the radial direction of the slide rod so that the limiting ball cooperates with the limiting platform;

[0057] When the negative pressure actuating rod moves with the second plug and opens the first air inlet, the second segment is opposite to the limiting ball, so that the negative pressure actuating rod cancels the push on the limiting ball, causing the limiting ball to separate from the limiting platform and cancel the limiting fixation on the slide rod.

[0058] A second aspect of this application provides a dishwasher including any of the water inlet systems described above. Attached Figure Description

[0059] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a schematic diagram of the structure of a dishwasher provided in an embodiment of this application;

[0061] Figure 2 This is a schematic diagram of the structure of a dishwasher from another perspective, provided as an embodiment of this application;

[0062] Figure 3 This is a schematic diagram of a water inlet system provided in an embodiment of this application;

[0063] Figure 4 This is a schematic diagram of the internal structure of a failure response device provided in an embodiment of this application;

[0064] Figure 5 A schematic diagram of the structure of a failure response device provided in this application when the inlet valve is working normally;

[0065] Figure 6 for Figure 5 A magnified view of region A in the middle;

[0066] Figure 7 This is a schematic diagram of the structure of a failure response device provided in an embodiment of this application when the inlet valve fails;

[0067] Figure 8 for Figure 7 A magnified view of region B in the middle;

[0068] Figure 9 This is a schematic diagram of the structure of a balance bar and a support bar in accordance with an embodiment of this application;

[0069] Figure 10 This is a schematic diagram of the structure for resetting a failure response device according to an embodiment of this application;

[0070] Figure 11 for Figure 10 A magnified view of region C in the middle;

[0071] Figure 12 A schematic diagram of the structure of a negative pressure component when the inlet valve is working normally, provided for this embodiment;

[0072] Figure 13 This is a schematic diagram of a negative pressure component when the inlet valve fails, provided in an embodiment of the present invention.

[0073] Figure 14 This is a schematic diagram of a reset operation hole configuration provided in an embodiment of this application.

[0074] Figure label:

[0075] 00 - Dishwasher; 02 - Housing; 03 - Working chamber;

[0076] 01-Water Inlet System;

[0077] 10- Failure response device;

[0078] 100 - Base shell; 101 - Mounting cavity; 102 - Support platform; 103 - Buffer channel; 104 - Reset operation hole;

[0079] 110 - Water flow channel; 111 - First flow section; 111a - Large flow section; 111b - Small flow section;

[0080] 112 - Second flow section; 113 - First through hole;

[0081] 120 - First ventilation channel; 121 - First air inlet;

[0082] 130 - Second ventilation channel;

[0083] 140 - Mounting base; 141 - Limiting stage;

[0084] 200 - Failure Prevention Module;

[0085] 210 - Flow-stopping assembly; 211 - Flow-stopping rod; 2111 - First strip hole; 212 - First plug;

[0086] 213 - First elastic element;

[0087] 220 - Balance bar; 221 - Rotation hole; 222 - Limiting groove; 223 - Second strip hole;

[0088] 230 - Negative pressure assembly; 231 - Negative pressure trigger rod; 2311 - First stage; 2312 - Second stage;

[0089] 232 - Second plug; 233 - Second elastic element; 234 - Slide rod; 2341 - Second through hole;

[0090] 235 - Limiting ball; 236 - Third elastic element;

[0091] 240 - Support rod; 241 - Rotating shaft; 242 - Limiting block;

[0092] 250-One-way sealing flap

[0093] 260-Positioning Pin;

[0094] 20 - Inlet valve;

[0095] 30-water cup;

[0096] 40 - Water softening device;

[0097] 50 - Water pipe. Detailed Implementation

[0098] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0099] Figure 1 This is a schematic diagram of the structure of a dishwasher provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a dishwasher provided in an embodiment of this application from another perspective.

[0100] This application provides a water inlet system 01 and a dishwasher 00. The water inlet system 01 can be applied to the dishwasher 00 to provide a washing water source for the dishwasher 00.

[0101] See Figure 1 and Figure 2 As shown, the dishwasher 00 may include a housing 02, which may have a working cavity 03, for example, the working cavity 03 may be an inner tub. The working cavity 03 may be used to place dishes to be washed. The water inlet system 01 may provide cleaning water to the working cavity 03 to wash the dishes inside the working cavity 03.

[0102] As described in the background section above, dishwashers are typically equipped with a leak detection device to detect whether the dishwasher is leaking. Currently, this usually involves placing a float or electrode or other detection component at the bottom of the dishwasher. When water accumulates at the bottom of the dishwasher, the detection component can detect the water and trigger an alarm, causing the system to terminate the washing program and shut off the water inlet valve.

[0103] However, in the dishwashers mentioned above, when the water inlet valve fails and continues to supply water, it is difficult to implement effective blocking measures. This will cause water to overflow due to the continuous supply of water from the water inlet valve, resulting in property damage to the user.

[0104] To address the aforementioned problems, this application provides a water inlet system. By incorporating a failure response device within the system, which includes a failure protection module, the system can seal the internal water flow channel when the inlet valve fails but continues to supply water to the cup. This prevents water from entering the cup and stops the continuous water supply. This effectively reduces or avoids water overflow from the dishwasher due to inlet valve failure, thus minimizing economic losses and improving the safety and reliability of the dishwasher.

[0105] The water inlet system provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0106] Figure 3 This is a schematic diagram of a water inlet system provided in an embodiment of this application. Figure 4 This is a schematic diagram of the internal structure of a failure response device provided in an embodiment of this application.

[0107] This application provides a water inlet system 01, see [link]. Figure 3 As shown, the water inlet system 01 may include an inlet valve 20, a failure response device 10, and a water cup 30. The water cup 30 and the failure response device 10 can be connected to the inlet valve 20. For example, one end of the failure response device 10 can be connected to the inlet valve 20, and the other end can be connected to the water cup 30. The inlet valve 20 can be used to provide cleaning water; for example, water entering through the inlet valve 20 can flow into the water cup 30 through the failure response device 10. When the inlet valve 20 fails and continues to supply water to the water cup 30, the failure response device 10 can block the internal water flow channel 110, thereby stopping the continued flow of water into the water cup 30 and preventing water overflow and economic losses.

[0108] Specifically, in combination Figure 4 As shown, the failure response device 10 may include a base shell 100 and a failure protection module 200. The base shell 100 may have a mounting cavity 101, and a water flow channel 110 may be formed in the mounting cavity 101. One end of the water flow channel 110 may be connected to the water inlet valve 20, and the other end may be connected to the water cup 30. Water entering through the water inlet valve 20 may enter the water cup 30 through the water flow channel 110.

[0109] At least a portion of the fail-safe module 200 can be installed in the mounting cavity 101. The fail-safe module 200 can be configured to block the water flow channel 110 to stop the water supply to the water cup 30 when the inlet valve 20 fails and continues to supply water to the water cup 30.

[0110] For example, when the inlet valve 20 is working normally, the fail-safe module 200 can keep the water flow channel 110 inside the base housing 100 open, allowing water flowing in from the inlet valve 20 to enter the water cup 30 through the water flow channel 110. When the inlet valve 20 fails and continues to supply water to the water cup, the fail-safe module 200 can close the water flow channel 110 inside the base housing 100 to block the water flow. This can effectively reduce or avoid water overflow from the dishwasher 00 caused by the inlet valve 20 failing and continuing to supply water to the water cup 30, preventing water from overflowing into the user's room and causing economic losses to the user.

[0111] The water inlet system 01 provided in this application embodiment includes a failure response device 10 with a failure protection module 200. The failure protection module 200 can close the internal water flow channel 110 when the water inlet valve 20 fails and continues to supply water to the water cup 30, preventing water from entering the water cup 30 and thus stopping the continuous water supply. This effectively reduces or avoids water overflow from the dishwasher 00 due to the failure of the water inlet valve 20, thus minimizing or preventing economic losses and improving the safety and reliability of the dishwasher 00.

[0112] See also Figure 3 and Figure 4 As shown, a water softener 40 can also be installed between the failure response device 10 and the water cup 30. Water flowing in from the inlet valve 20 flows out of the failure response device 10 and enters the water softener 40. After being softened by the water softener 40, it flows into the water cup 30. The water softener 40 can remove calcium and magnesium ions from the water, effectively reducing water hardness. This reduces scale formation, protects the dishwasher 00, and effectively improves washing performance.

[0113] Figure 5This is a schematic diagram of the structure of a failure response device provided in this application when the inlet valve is working normally. Figure 6 for Figure 5 A magnified view of region A in the middle.

[0114] See Figure 5 and Figure 6 As shown, the failure protection module 200 may include a flow-stopping component 210, a balance bar 220, and a negative pressure component 230. The balance bar 220 may be connected to the flow-stopping component 210, and the negative pressure component 230 may be connected to the balance bar 220.

[0115] The base shell 100 may also form a first ventilation channel 120 that is connected to the water flow channel 110. The end of the first ventilation channel 120 away from the water flow channel 110 has a first air inlet 121 that is connected to the outside. The negative pressure component 230 can be installed at the first air inlet 121.

[0116] When the inlet valve 20 is working normally, the negative pressure component 230 can be closed in the first air inlet 121, and the negative pressure component 230 can provide support for the flow stop component 210 through the balance bar 220 so that the flow stop component 210 can open the water flow channel 110.

[0117] When the inlet valve 20 fails, a negative pressure can be generated in the first ventilation channel 120. Under the action of the negative pressure, the negative pressure component 230 can open the first air inlet 121 and remove the support for the balance bar 220 and the flow stop component 210, so that the flow stop component 210 can close the water flow channel 110.

[0118] That is, when the water inlet valve 20 is working normally, there is no negative pressure in the first air exchange channel 120. At this time, the negative pressure component 230 can remain stationary and be closed in the first air inlet 121. This allows the negative pressure component 230 to provide support for the flow stop component 210 through the balance bar 220, thereby allowing the flow stop component 210 to open the water flow channel 110.

[0119] When the water inlet valve 20 fails, it continues to supply water to the cup, creating negative pressure within the first ventilation channel 120. This negative pressure draws the negative pressure component 230 into the first ventilation channel 120, allowing it to open the first air inlet 121 and remove support from the balance bar 220 and the flow-stopping component 210. Without the support of the negative pressure component 230, the flow-stopping component 210 can move and close the water flow channel 110. This prevents water from flowing through the water flow channel 110, stopping the supply of water to the cup and effectively preventing water overflow from the dishwasher due to the failure of the water inlet valve 20. This reduces or eliminates economic losses caused by water overflow and improves the safety and reliability of the dishwasher.

[0120] For details, please refer to [link / reference]. Figure 5 and Figure 6 As shown, a second ventilation channel 130 connected to the water flow channel 110 is also formed inside the base shell 100. The end of the second ventilation channel 130 away from the water flow channel 110 can be connected to the outside.

[0121] When the water inlet valve 20 is working normally, outside gas can enter the water flow channel 110 through the second ventilation channel 130, so that the negative pressure component 230 is closed in the first air inlet 121.

[0122] When the inlet valve 20 fails, the second ventilation channel 130 can be closed to generate negative pressure in the first ventilation channel 120, causing the negative pressure component 230 to open the first air inlet 121 under the action of negative pressure and remove the support for the balance bar 220 and the flow stop component 210.

[0123] For example, when water flows through the water flow channel 110, the water flow channel 110 can continuously draw in outside air. However, when the water inlet valve 20 is working normally, outside air can enter the water flow channel 110 through the second ventilation channel 130 without passing through the first ventilation channel 120. At this time, no negative pressure will be generated in the first ventilation channel 120, allowing the negative pressure component 230 to remain stationary and sealed within the first air inlet 121.

[0124] When the inlet valve 20 fails, the second ventilation channel 130 can be closed, preventing outside gas from entering the water flow channel 110. At this time, since the water flow channel 110 continues to draw in gas, it will draw in outside gas through the first ventilation channel 120. This creates a negative pressure within the first ventilation channel 120, causing the negative pressure component 230 to open the first air inlet 121 under the influence of the negative pressure and remove its support for the balance bar 220 and the flow-stopping component 210.

[0125] By coordinating the second ventilation channel 130 and the first ventilation channel 120 with the water flow channel, the state of the negative pressure component 230 can be controlled. When the water inlet valve 20 is working normally, the negative pressure component 230 can remain stationary and provide support to the stop-flow component 210 via the balance bar 220. When the water inlet valve 20 fails, the support for the stop-flow component 210 can be automatically removed, allowing the stop-flow component 210 to promptly close the water flow channel 110, preventing water from continuously entering the water cup and causing water overflow from the dishwasher.

[0126] See also Figure 7 and Figure 8 As shown, the second ventilation channel 130 can be connected to the water cup 30. When the water inlet valve 20 fails and continues to supply water to the water cup 30, the water level in the water cup 30 can rise and flow into the second ventilation channel 130, thereby closing the second ventilation channel 130. For example, see... Figure 8As shown, the main body of the second ventilation channel 130 can be roughly V-shaped, and the lowest end of the V-shaped second ventilation channel 130 can be connected to the water pipe 50 (see reference). Figure 3 (As shown) is connected to the critical water level line of the water cup at 30.

[0127] See Figure 8 As shown, when the inlet valve 20 fails and continues to supply water to the water cup 30, the water level in the water cup 30 continues to rise and exceeds the critical line. At this time, the water exceeding the critical line can flow into the second ventilation channel 130 through the water pipe 50. As the water level continues to rise, the water level at the lowest end of the second ventilation channel 130 also rises. This continues until the second ventilation channel 130 is blocked, preventing external gas from entering the small-diameter section 111b through the second ventilation channel 130. This creates a negative pressure in the first ventilation channel 120, causing the negative pressure component 230 to move under the action of the negative pressure and open the first air inlet 121, and causing the negative pressure component 230 to remove its support for the balance rod 220. This causes the balance rod 220 to remove its support for the flow stop rod 211, so that the flow stop rod 211 and the first plug 212 close the first through hole 113 under the action of the first elastic element 213, thereby blocking the water flow channel 110 and stopping the continued supply of water to the water cup 30. This effectively prevents water from overflowing when water is supplied to the cup 30, thus avoiding economic losses for the user and effectively improving the protection of the user's property.

[0128] See also Figure 5 and Figure 6 As shown, the water flow channel 110 may include a first flow section 111 and a second flow section 112, which can be connected. For example, the first flow section 111 and the second flow section 112 can be connected through a first through hole 113. Specifically, the first flow section 111 and the second flow section 112 can be overlapped at the connection point as shown in the figure, and the first through hole 113 can be opened at the overlap point. The first flow section 111 can be located near the end of the inlet valve 20 and connected to the inlet valve 20, and the second flow section 112 can be located near the water cup 30 and connected to the water cup 30. For example, the second flow section 112 can be connected to the water softener 40, so that the water cup 30 can be connected through the water softener 40.

[0129] The flow-stopping assembly 210 may include a flow-stopping rod 211, which is slidably inserted into the first through hole 113, and the diameter of the flow-stopping rod 211 may be smaller than the diameter of the first through hole 113. Thus, when the flow-stopping rod 211 is inserted into the first through hole 113, it can prevent blockage of the first through hole 113, allowing water to flow through the gap between the flow-stopping rod 211 and the inner wall of the first through hole 113.

[0130] One end of the flow stop rod 211 may have a first plug 212, and the other end may be slidably hinged to the balance rod 220. When the inlet valve 20 is working normally, the flow stop rod 211 can drive the first plug 212 away from the first flow section 111 under the support of the balance rod 220, so that the first flow section 111 and the second flow section 112 can be connected to open the water flow channel 110.

[0131] When the inlet valve 20 fails, the stop rod 211 can drive the first plug 212 to block the water flow channel 110 between the first flow section 111 and the second flow section 112.

[0132] For example, when the inlet valve 20 is working normally, the stop rod 211 can drive the first plug 212 to move away from the first through hole 113, so that the first through hole 113 is in the open state, allowing water to flow through the first through hole 113, so as to maintain the connection between the first flow section 111 and the second flow section 112, so that the water in the inlet valve 20 can flow smoothly into the water cup 30.

[0133] When the inlet valve 20 fails, the stop rod 211 can move the first plug 212 toward the first through hole 113, so that the first plug 212 can cover the first through hole 113 and seal it. This isolates the first flow section 111 from the second flow section 112, thus sealing the water flow channel 110. Water cannot flow through the first through hole 113, thereby stopping the water supply to the water cup 30.

[0134] This allows the failure response device 10 to switch the internal water flow channel 110 to different connection states based on the operating status of the inlet valve 20. This ensures that the inlet valve 20 maintains a normal water supply to the water cup 30 during normal operation. Conversely, if the inlet valve 20 fails, the water flow channel 110 can be quickly switched to stop the continuous water supply to the water cup 30. This effectively prevents the inlet valve 20 from failing and continuing to supply water to the water cup 30, preventing water overflow and economic losses, and significantly improving the protection of the user's property.

[0135] The first plug 212 can be made of a soft rubber material with a certain degree of elasticity, such as rubber or silicone. This can effectively improve the sealing between the first plug 212 and the first through hole 113 when the first plug 212 is used to seal the first through hole 113, and prevent water from flowing between the first plug 212 and the first through hole 113, thereby effectively improving the reliability and stability of sealing the first through hole 113.

[0136] Figure 7 This is a schematic diagram of the structure of a failure response device provided in this application when the inlet valve fails. Figure 8 for Figure 7A magnified view of region B in the middle.

[0137] For details, see Figure 5 and Figure 6 As shown, the DC component 210 may further include a first elastic element 213, one end of which can be connected to the first plug 212, and the other end of which can be connected to the base shell 100. When the inlet valve 20 is working normally, the first elastic element 213 can be compressed between the first plug 212 and the base shell 100, and when the balance bar 220 removes its supporting force, it drives the first plug 212 to move toward the first flow section 111 to seal between the first flow section 111 and the second flow section 112.

[0138] For example, such as Figure 5 and Figure 6 As shown, the first elastic element 213 can be located within the first flow section 111. When the inlet valve 20 is operating normally, the balance bar 220 provides support for the stop bar 211. This allows the stop bar 211 and the first plug 212 to move towards the first flow section 111 to open the first through hole 113 and apply pressure to the first elastic element 213, placing it in an elastically compressed state. The first elastic element 213 in the elastically compressed state has a rebound force. When the inlet valve 20 fails and the balance bar 220 removes its support force on the stop bar 211, see [reference needed]. Figure 7 and Figure 8 As shown, at this time, the first elastic element 213 can drive the first plug 212 to move toward the first flow section 111 under the action of the rebound force, so that the first plug 212 can block the first through hole 113 to close the water flow channel 110 and prevent water from flowing through.

[0139] When the inlet valve 20 fails and the balance bar 220 removes its support for the stop bar 211, the first elastic element 213 can drive the first plug 212 to move toward the first through hole 113 to seal the first through hole 113. This can effectively reduce or avoid the failure of the first plug 212 to seal the first through hole 113, effectively improve the reliability and stability of the first plug 212 sealing the first through hole 113, and improve the reliability of the failure response device 10 in responding to the failure of the inlet valve 20.

[0140] See also Figure 5 and Figure 6 As shown, the fail-safe module 200 may further include a support rod 240. The support rod 240 and the negative pressure component 230 can be hinged to both ends of the balance rod 220, that is, one end of the balance rod 220 can be hinged to the support rod 240, and the other end can be hinged to the negative pressure component 230. The flow-stopping rod 211 can be hinged to the middle part of the balance rod 220, and the other end of the support rod 240 can abut against the base shell 100.

[0141] See Figure 5 and Figure 6 As shown, when the inlet valve 20 is working normally, the balance rod 220 is in a balanced state under the support of the support rod 240 and the negative pressure component 230, and provides support for the flow stop rod 211. That is, the balance rod 220 can be in a static equilibrium state under the support of the support rod 240 and the negative pressure component 230. At this time, the balance rod 220 can provide support for the flow stop rod 211, so that the flow stop rod 211 and the first plug 212 can be kept in a state that opens the first through hole 113, so that the water flow channel 110 can be kept in a flowing state, thereby supplying water to the water cup 30 normally.

[0142] See Figure 7 and Figure 8 As shown, when the inlet valve 20 fails, the negative pressure assembly 230 can remove its support for the balance bar 220. At this time, the balance bar 220 can lose its balance and remove its support for the flow stop bar 211. For example, after the negative pressure assembly 230 removes its support for the balance bar 220, the balance bar 220 will become unbalanced due to uneven force, thus losing its support and fixation for the flow stop bar 211. In this way, the flow stop bar 211, driven by the first elastic element 213, can move the first plug 212 toward the first through hole 113 to close the first through hole 113 and block the water flow channel 110.

[0143] After the water flow channel 110 is blocked, the end of the support rod 240 that abuts against the base shell 100 can be separated from the base shell 100. For example, when the flow stop rod 211 moves under the drive of the first elastic member 213, it can also drive the balance rod 220 to move, causing the support rod 240 hinged to one end of the balance rod 220 to also move, thereby separating the support rod 240 from the base shell 100.

[0144] For example, see Figure 5 and Figure 6 As shown, a support platform 102 can be formed on the base shell 100. When the balance bar 220 is in a balanced state, one end of the support rod 240 can abut against the support platform 102 to keep the support rod 240 in a certain balanced state. Figure 7 and Figure 8 As shown, when the balance bar 220 becomes unbalanced and moves, the support bar 240 can rotate clockwise around the balance bar 220 in the state shown in the figure, so as to move away from the support platform 102 and lose contact with the support platform 102, so that the support bar 240 and the balance bar 220 are in a free state.

[0145] Figure 9 This is a schematic diagram of the structure of a balance bar and a support bar in accordance with an embodiment of this application.

[0146] For details, see Figure 9As shown, a rotating hole 221 can be provided on the balance bar 220, and a rotating shaft 241 can be provided on the support rod 240. The rotating shaft 241 can pass through the rotating hole 221, so that the balance bar 220 and the support rod 240 can be hinged through the cooperation of the rotating hole 221 and the rotating shaft 241. A limiting groove 222 can be provided in the rotating hole 221, and a limiting block 242 can be provided on the rotating shaft 241, located in the limiting groove 222. When the support rod 240 rotates around the balance bar 220, the limiting block 242 can slide in the limiting groove 222. The cooperation between the limiting block 242 and the limiting groove 222 can guide the rotation of the support rod 240, allowing the support rod 240 to rotate clockwise when the balance bar 220 becomes unbalanced, thus separating it from the balance platform, and putting the balance bar 220 and the support rod 240 in a free state.

[0147] The flow stop bar 211 and the balance bar 220 can be fitted with a pin hole, for example, see [reference needed]. Figure 8 As shown, a first strip-shaped hole 2111 and a second strip-shaped hole 223 can be respectively opened at the middle position of the flow stop rod 211 and the balance rod 220. The positioning pin 260 can be sequentially inserted into the first strip-shaped hole 2111 and the second strip-shaped hole 223. Through the pin hole cooperation between the flow stop rod 211 and the balance rod 220, the balance rod 220 can remove its support for the flow stop rod 211 in an unbalanced state, and the flow stop rod 211 can rotate around the flow stop rod 211 when it moves, so that the balance rod 220 can move flexibly to achieve a new balance state (such as the free state mentioned above). This can avoid the balance rod 220 interfering with the flow stop rod 211 when the flow stop rod 211 moves and closes the first through hole 113, thereby affecting the normal movement of the flow stop rod 211 and the first plug 212, and helping to improve the reliability and stability of the flow stop rod 211 and the first plug 212 in closing the first through hole 113.

[0148] See also Figure 5 and Figure 6 As shown, the water flow channel 110 may include a large-diameter flow section 111a and a small-diameter flow section 111b that are interconnected. The large-diameter flow section 111a may be located near and connected to the inlet valve 20. For example, the large-diameter flow section 111a and the inlet valve 20 may be connected by a water pipe 50. The inner diameter of the large-diameter flow section 111a may be larger than the inner diameter of the small-diameter flow section 111b, and a Venturi tube structure may be formed between the large-diameter flow section 111a and the small-diameter flow section 111b. For example, see... Figure 6 As shown, the diameter of the end of the large-diameter section 111a connecting to the small-diameter section 111b can be gradually reduced to improve the smoothness of the inner wall of the first flow section 111 and enhance the smoothness of the water flow.

[0149] The first ventilation channel 120 and the second ventilation channel 130 can both be connected to the narrow-diameter section 111b. When the water flowing into the narrow-diameter section 111b from the large-diameter section 111a via the inlet valve 20, a Venturi effect is generated, causing the narrow-diameter section 111b to draw in external gas through the first ventilation channel 120 or the second ventilation channel 130. Furthermore, when the inlet valve 20 is functioning normally, external gas can enter the narrow-diameter section 111b through the second ventilation channel 130.

[0150] See Figure 7 and Figure 8 As shown, when the inlet valve 20 fails, the second ventilation channel 130 can be closed, preventing outside gas from entering. At this time, because the small-diameter section 111b continues to draw in gas, a negative pressure is generated in the first ventilation channel 120. Under this negative pressure, the negative pressure assembly 230 can be moved to open the first air inlet 121. Furthermore, after the negative pressure assembly 230 moves, it can remove its support for the balance bar 220, allowing gas to enter the small-diameter section 111b through the first air inlet 121 and the first ventilation channel 120.

[0151] By configuring the first flow section 111 as a Venturi tube structure, the small-diameter flow section 111b in the first flow section 111 can continuously draw in external gas. Furthermore, when the inlet valve 20 fails and closes the second ventilation channel 130, a negative pressure can be generated within the first ventilation channel 120. This negative pressure allows the negative pressure assembly 230 to move, thereby removing its supporting force on the balance bar 220. This also removes the supporting force of the balance bar 220 on the stop bar 211, allowing the stop bar 211 and the first plug 212 to move and close the first through hole 113 under the action of the first elastic element 213. This closes the water flow channel 110, stopping the continued water supply to the water cup 30, enabling the failure response device 10 to promptly interrupt the water flow in response to the failure of the inlet valve 20, effectively improving the reliability and stability of the failure response device 10.

[0152] Figure 10 This is a schematic diagram of the reset structure of a failure response device provided in an embodiment of this application. Figure 11 for Figure 10 A magnified view of region C in the middle.

[0153] See also Figure 10 and Figure 11 As shown, a one-way sealing flap 250 may also be provided at the part where the first ventilation channel 120 and the second ventilation channel 130 are connected to the small flow section 111b. The one-way sealing flap 250 may be provided on one side close to the water flow channel 110. The one-way sealing flap 250 may be configured to open only from one side of the first ventilation channel 120 and the second ventilation channel 130 toward the water flow channel 110.

[0154] When the inlet valve 20 fails and the water flow channel 110 is closed, the one-way sealing flap 250 can be closed by the water remaining in the small diameter flow section 111b to isolate the first ventilation channel 120 and the water flow channel 110, so that the negative pressure in the first ventilation channel 120 is removed, and the negative pressure component 230 can be reset and closed in the first air inlet 121.

[0155] For example, see Figure 5 and Figure 6 As shown, when the inlet valve 20 is working normally, outside air can enter the water flow channel 110 through the connection between the first ventilation channel 120 and the second ventilation channel 130, while water in the water flow channel 110 cannot enter the first ventilation channel 120 and the second ventilation channel 130 through the connection. See Figure 10 and Figure 11 As shown, when the inlet valve 20 and the water flow channel 110 fail, the second through hole 113 closes, and the water in the first flow section 111 no longer flows to the second flow section 112, but remains in the first flow section 111. At this time, the one-way sealing flap 250 can seal the connection between the first ventilation channel 120 and the second ventilation channel 130 under the action of water pressure, preventing the water in the first flow section 111 from entering the first ventilation channel 120 through the connection. This allows the negative pressure in the first ventilation channel 120 to disappear, so that the negative pressure assembly 230 can reset after the negative pressure in the first ventilation channel 120 disappears. This allows the slide bar 234 in the negative pressure assembly 230 to resume support for the balance bar 220, so that the user can reset the balance bar 220.

[0156] See also Figure 10 and Figure 11 As shown, the first ventilation channel 120 and the second ventilation channel 130 can merge and connect with the small flow section 111b, and the one-way sealing flap 250 can seal the position after the first ventilation channel 120 and the second ventilation channel 130 merge.

[0157] In this way, a single one-way sealing flap 250 can simultaneously provide a one-way seal between the first ventilation channel 120, the second ventilation channel 130, and the small-diameter section 111b. This eliminates the need for separate one-way sealing flaps 250 for the first and second ventilation channels 120 and 130, reducing the number of flaps 250 required and improving the overall compactness of the water inlet system 01.

[0158] See also Figure 10 and Figure 11As shown, a buffer channel 103 may be provided between the first ventilation channel 120 and the second ventilation channel 130 and the small flow section 111b. A one-way sealing flap 250 may be disposed in the buffer channel 103. The buffer channel 103 provides installation space for the one-way sealing flap 250, allowing the one-way sealing flap 250 to swing within the buffer channel 103 to open or close the communication between the first ventilation channel 120, the second ventilation channel 130, and the small flow section 111b.

[0159] See Figure 5 and Figure 6 As shown, the negative pressure assembly 230 may include a negative pressure trigger rod 231, which may be inserted into the first air inlet 121. That is, one end of the negative pressure trigger rod 231 may be located in the first ventilation channel 120, and the end of the negative pressure trigger rod 231 located in the first ventilation channel 120 may have a second plug 232.

[0160] See Figure 5 and Figure 6 As shown, when the inlet valve 20 is functioning normally, external gas can enter the narrow flow section 111b through the second ventilation channel 130, and the second plug 232 can seal the first air inlet 121. For example, when the inlet valve 20 is functioning normally, the water level in the water cup 30 does not exceed the critical line. Water will not enter the second ventilation channel 130, keeping the second ventilation channel 130 unobstructed. This allows external gas to enter the narrow flow section 111b through the second ventilation channel 130. At this time, no negative pressure is generated in the first ventilation channel 120, allowing the second plug 232 to seal the first air inlet 121.

[0161] Combination Figure 7 and Figure 8 As shown, when the inlet valve 20 fails, the second ventilation channel 130 closes, and a negative pressure is generated in the first ventilation channel 120. This causes the second plug 232 to move the negative pressure trigger rod 231 toward the first ventilation channel 120 and open the first air inlet 121. External gas enters the small-diameter section 111b through the first air inlet 121 and the first ventilation channel 120. For example, when the inlet valve 20 fails, the water level in the water cup 30 rises and exceeds the critical line. At this time, water in the water cup 30 can flow into the second ventilation channel 130, causing the second ventilation channel 130 to close. External gas cannot enter the small-diameter section 111b through the second ventilation channel 130, which will generate a negative pressure in the first ventilation channel 120. That is, the external air pressure is greater than the air pressure in the first ventilation channel 120, so the external air pressure will exert pressure on the second plug 232. Under external pressure, the second plug 232 moves together with the negative pressure trigger rod 231 toward the first ventilation channel 120 to open the first air inlet 121.

[0162] After the negative pressure trigger rod 231 moves, the negative pressure component 230 can remove its support for the balance rod 220, causing the balance rod 220 to lose its balance and remove its support for the flow stop rod 211. This allows the flow stop rod 211 and the first plug 212 to move under the action of the first elastic element 213 and close the first through hole 113, thereby sealing the water flow channel 110 and stopping the continued supply of water to the water cup 30. This effectively reduces or prevents water from continuously entering the water cup 30 and causing overflow, thus effectively improving the protection of the user's property.

[0163] When the flow stop bar 211 moves, it can drive the balance bar 220 to move and cause the support bar 240 to separate from the support platform 102 on the base shell 100, so that the balance bar 220 and the support bar 240 enter a new equilibrium state, which means that the balance bar 220 is in a free suspended state.

[0164] See also Figure 5 and Figure 6 As shown, the negative pressure assembly 230 may further include a second elastic member 233. One end of the second elastic member 233 may be connected to the second plug 232, and the other end may be connected to the inner wall of the first ventilation channel 120. For example, both ends of the second elastic member 233 may abut against the second plug 232 and the inner wall of the first ventilation channel 120. The second elastic member 233 may be used to drive the second plug 232 to close onto the first air inlet 121.

[0165] For example, see Figure 5 and Figure 6 As shown, when the inlet valve 20 is functioning normally, there is no negative pressure in the first ventilation channel 120, meaning that external gas does not exert pressure on the second plug 232. At this time, the elastic force of the second elastic element 233 can drive the second plug 232 to press towards the first air inlet 121, thus sealing the second plug 232 against the first air inlet 121. This effectively reduces or prevents external gas from entering the first ventilation channel 120 through the first air inlet 121 when the inlet valve 20 is functioning normally, thus preventing the negative pressure component 230 from moving and causing the stop rod 211 to move, which would then seal the water flow channel 110. This effectively ensures the smooth flow of water.

[0166] See also Figure 5 and Figure 6 As shown, the negative pressure assembly 230 may further include a slide rod 234. One end of the slide rod 234 may be hinged to the balance bar 220, and the other end of the slide rod 234 may be sleeved on the negative pressure actuating rod 231 and slide in cooperation with the negative pressure actuating rod 231. For example, the slide rod 234 may be a hollow structure, and the negative pressure actuating rod 231 may be inserted into the cavity of the slide rod 234.

[0167] The negative pressure actuating rod 231 can be configured to provide a limiting fixation for the slide rod 234 when the inlet valve 20 is functioning normally, so that the slide rod 234 can provide support for the balance rod 220. When the inlet valve 20 fails, the negative pressure actuating rod 231 moves and removes the limiting effect on the slide rod 234, so that the slide rod 234 removes its support for the balance rod 220.

[0168] For details, see Figure 5 and Figure 6 As shown, when the inlet valve 20 is working normally, the second plug 232 is sealed on the first air inlet 121 under the action of the second elastic element 233. This allows the negative pressure actuating rod 231 to provide a limiting fixation for the slide rod 234, so that the slide rod 234 can be in a static and fixed state. This allows the slide rod 234 to provide support for the balance rod 220, so that the balance rod 220 can be in a balanced and fixed state under the support of the slide rod 234 and the support rod 240, thereby providing support for the flow stop rod 211. This allows the first plug 212 on the flow stop rod 211 to be moved away from the first through hole 113, so that the first through hole 113 is in an open state, and the water flow channel 110 is in a connected state, so as to ensure the smooth flow of water.

[0169] See Figure 7 and Figure 8 As shown, when the inlet valve 20 fails, the second ventilation channel 130 is closed, creating negative pressure in the first ventilation channel 120. Under the action of external air pressure, the second plug 232 can move towards the first ventilation channel 120 along with the negative pressure trigger rod 231, causing the negative pressure trigger rod 231 to release its limiting fixation on the slide rod 234, making the slide rod 234 movable. This removes the slide rod 234's support for the balance rod 220. At this time, the balance rod 220 loses its balance and removes its support force on the flow stop rod 211, allowing the flow stop rod 211 to move towards the first through hole 113 under the action of the first elastic element 213. This causes the first plug 212 to close the first through hole 113, blocking the water flow channel 110 and stopping the water supply to the water cup 30. This effectively avoids water overflow caused by continuous water supply, ensuring the safety of the user's property.

[0170] Through the cooperation between the slide rod 234 and the negative pressure actuating rod 231, the slide rod 234 can convert the movement of the negative pressure actuating rod 231 into a force on the balance rod 220. This allows the slide rod 234 to switch the support state of the balance rod 220 according to the working state of the inlet valve 20, thereby controlling the state of the stop rod 211 and switching the connection state of the water flow channel 110. This responds to the working state of the inlet valve 20, maintaining unobstructed water flow when the inlet valve 20 is functioning normally, and quickly closing the water flow channel 110 when the inlet valve 20 fails, stopping the continued water supply to the water cup 30, thus avoiding economic losses for the user and protecting their property.

[0171] Figure 12 This is a schematic diagram of the structure of a negative pressure component when the inlet valve is working normally, provided in this embodiment. Figure 13 This is a schematic diagram of the structure of a negative pressure component when the inlet valve fails, provided in this embodiment.

[0172] See Figure 12 As shown, the base shell 100 may also have a mounting base 140, and at least a portion of the slide rod 234 may be slidably mounted within the mounting base 140. For example, the mounting base 140 may be a housing 02 structure, and at least a portion of the slide rod 234 may be located within the housing 02 of the mounting base 140. Furthermore, one end of the slide rod 234 may extend outside the mounting base 140 and be connected to the balance bar 220, while the end of the slide rod 234 located within the mounting base 140 may engage with the negative pressure actuating rod 231. For example, the negative pressure actuating rod 231 may pass through the slide rod 234 from the end of the slide rod 234 located within the mounting base 140.

[0173] A second through hole 2341 may be provided on the side wall of the slide rod 234 at one end of the mounting base 140. A limiting ball 235 may be provided in the second through hole 2341, and the limiting ball 235 may move within the second through hole 2341, that is, the limiting ball 235 may move radially along the slide rod 234. A limiting platform 141 may be provided on the inner wall of the mounting base 140. For example, the limiting platform 141 may be a boss structure protruding from the inner wall of the mounting base 140.

[0174] When the second plug 232 is closed in the first air inlet 121, the negative pressure actuating rod 231 pushes the limiting ball 235 to move outward toward the slide rod 234 and cooperate with the limiting platform 141 to limit and fix the slide rod 234.

[0175] For example, the negative pressure actuating rod 231 can apply a pushing force to the limiting ball 235 in the radial direction of the slide rod 234, so that the limiting ball 235 can extend out of the slide rod 234 and abut against the limiting platform 141. The cooperation between the limiting platform 141 and the limiting ball 235 can provide axial limitation for the slide rod 234, preventing the slide rod 234 from moving along its axial direction, thereby fixing the slide rod 234 within the mounting base 140. This provides support for the balance bar 220, thereby fixing the flow stop bar 211 and the first plug 212, keeping the first through hole 113 open. This allows the water flow channel 110 to be connected, ensuring the smooth flow of water.

[0176] Combination Figure 13 As shown, when the negative pressure actuator 231 moves and opens the first air inlet 121, the negative pressure actuator 231 removes its push on the limiting ball 235, the limiting ball 235 separates from the limiting platform 141 and removes its limiting fixation on the slide rod 234.

[0177] For example, when the negative pressure actuating rod 231 moves under external air pressure, the thrust on the limiting ball 235 in the radial direction of the slide rod 234 can be released. This allows the limiting ball 235 to retract into the slide rod 234 along the second through hole 2341, thus releasing its engagement with the limiting platform 141 and removing the limiting fixation on the slide rod 234. This allows the slide rod 234 to be movable along its axial direction. That is, the slide rod 234 removes its support for the balance bar 220, which in turn removes the balance bar 220's support for the flow stop rod 211. This allows the flow stop rod 211 and the first plug 212 to move under the action of the first elastic member 213, closing the first through hole 113, blocking the water flow channel 110, and stopping the water supply to the water cup 30.

[0178] Through the cooperation between the limiting ball 235, the negative pressure actuating rod 231, and the limiting platform 141, the sliding rod 234 can switch to different cooperation states according to the working state of the inlet valve 20, thereby switching the different support states of the balance rod 220, and thus controlling the state of the stop rod 211 to control the connection state of the water flow channel 110. This allows for a positive response to the working state of the inlet valve 20, maintaining unobstructed water flow when the inlet valve 20 is working normally, and quickly closing the water flow channel 110 when the inlet valve 20 fails, stopping the continued water supply to the water cup 30, avoiding economic losses for the user, and protecting the user's property safety.

[0179] See also Figure 12 and Figure 13 As shown, the negative pressure actuating rod 231 may include a first segment 2311 and a second segment 2312 connected together. The second plug 232 may be located on the first segment 2311, and the diameter of the first segment 2311 may be larger than the diameter of the second segment 2312. For example, as shown in the figure, the diameter of the first segment 2311 near the end of the second segment 2312 may gradually decrease to make the transition between the first segment 2311 and the second segment 2312 smooth, which helps to reduce stress concentration and improve the structural stability of the negative pressure actuating rod 231.

[0180] When the second plug 232 is closed in the first air inlet 121, the first section 2311 of the negative pressure actuating rod 231 can be opposite to the limiting ball 235 and push the limiting ball 235 to move outward along the radial direction of the slide rod 234 so that the limiting ball 235 cooperates with the limiting platform 141.

[0181] For example, when the second plug 232 is closed in the first air inlet 121, the negative pressure actuating rod 231 extends a relatively long distance into the slide rod 234, causing the first section 2311 of the negative pressure actuating rod 231 to also extend into the slide rod 234, aligning the larger diameter first section 2311 with the limiting ball 235. In this way, the first section 2311 can apply a pushing force to the limiting ball 235 in the radial direction of the slide rod 234, pushing the limiting ball 235 out of the slide rod 234. This allows the limiting ball 235 to abut against the limiting platform 141 on the inner wall of the mounting base 140, thereby providing axial positioning and fixation for the slide rod 234, preventing it from moving. This allows the slide rod 234 to support the balance bar 220, which in turn supports the flow stop bar 211, keeping the first through hole 113 open. The water flow channel 110 is kept in a continuous state to ensure the normal water supply to the water cup 30.

[0182] When the negative pressure actuating rod 231 moves with the second plug 232 and opens the first air inlet 121, the second section 2312 is opposite to the limiting ball 235, so that the negative pressure actuating rod 231 cancels the push on the limiting ball 235, causing the limiting ball 235 to separate from the limiting platform 141 and cancel the limiting fixation on the slide rod 234.

[0183] For example, when the negative pressure actuating rod 231 moves with the second plug 232 and opens the first air inlet 121, the negative pressure actuating rod 231 can move relative to the slide rod 234, causing the first segment 2311 of the negative pressure actuating rod 231 to move outside the slide rod 234. Only the smaller diameter second segment 2312 remains inside the slide rod 234. Because the diameter of the second segment 2312 is smaller, it will not exert a radial thrust on the limiting ball 235. This allows the limiting ball 235 to retract along the second through hole 2341 into the slide rod 234, thereby separating the limiting ball 235 from the limiting platform 141. This allows the limiting fixation of the slide rod 234 to be removed, allowing the slide rod 234 to be movable along its axial direction. That is, the slide rod 234 removes its support for the balance bar 220, thereby removing the support of the balance bar 220 for the flow stop bar 211. The flow stop rod 211 and the first plug 212 can move under the action of the first elastic member 213 to close the first through hole 113, block the water flow channel 110, and stop the water supply to the water cup 30.

[0184] By including two sections of different diameters in the negative pressure actuating rod 231, the rod can be moved and its different diameter sections can be switched to cooperate with the slide rod 234 according to the working state of the inlet valve 20, thereby controlling the slide rod 234. When the inlet valve 20 is working normally, the slide rod 234 can support and fix the flow-stopping rod 211 through the balance rod 220. When the inlet valve 20 fails, the slide rod 234 can remove its support for the balance rod 220. This allows the flow-stopping rod 211 to move rapidly under the action of the first elastic element 213 to close the first through hole 113 and block the water flow. This effectively improves the response efficiency of the failure response device 10 to the operation of the inlet valve 20.

[0185] See also Figure 12 and Figure 13 As shown, the negative pressure assembly 230 may further include a third elastic element 236, which can be sleeved on the slide rod 234. One end of the third elastic element 236 can be connected to the slide rod 234, and the other end can be connected to the inner wall of the mounting base 140. The third elastic element 236 can be used to drive the slide rod 234 to move towards the negative pressure triggering rod 231, so as to cooperate with the negative pressure triggering rod 231 and the limiting ball 235 to restore the limiting and fixing of the slide rod 234.

[0186] For details, see Figure 10 and Figure 11 As shown, when the water flow channel 110 is closed by the first plug 212, the water flow stops. The Venturi effect at the first flow section 111 also disappears, and negative pressure is no longer generated in the first ventilation channel 120. At this time, the negative pressure trigger rod 231 and the second plug 232 can move toward the first air inlet 121 under the action of the second elastic element 233 to close the first air inlet 121 and realize the reset of the negative pressure trigger rod 231.

[0187] Furthermore, since the balance bar 220 is in a free-suspension state at this time, it does not limit the sliding bar 234. Therefore, the sliding bar 234 can move towards the mounting base 140 under the action of the third elastic element 236, that is, towards the negative pressure actuating rod 231. This causes the first segment 2311 of the negative pressure actuating rod 231 to extend into the sliding bar 234, restoring the engagement with the sliding bar 234, thereby allowing the first segment 2311 to be positioned relative to the limiting ball 235, applying a radial force to the limiting ball 235. The limiting ball 235 is pushed out of the sliding bar 234 to engage with the limiting platform 141, thereby restoring the limiting and fixing of the sliding bar 234.

[0188] The elastic force of the third elastic element 236 can be greater than that of the second elastic element 233. Since the reset of the slide rod 234 and the negative pressure actuating rod 231 occurs simultaneously, this reduces or avoids the possibility of one resetting prematurely and affecting the normal reset of the latter. Therefore, by making the elastic force of the third elastic element 236 greater than that of the second elastic element 233, the reset force of the slide rod 234 can be increased. This reduces or avoids the possibility of the negative pressure actuating rod 231 resetting prematurely and creating resistance to the reset of the limiting ball 235, thus affecting the reset of the slide rod 234. This effectively improves the reliability and stability of the overall reset of the negative pressure assembly 230.

[0189] In addition, the elastic force of the first elastic element 213 can be much greater than that of the third elastic element 236. In this way, when the flow stop rod 211 closes the first through hole 113 under the action of the first elastic element 213, the resistance of the third elastic element 236 to the first elastic element 213 can be effectively reduced, which helps to improve the reliability and stability of the movement of the flow stop rod 211 and the first plug 212, and improve the reliability of the water flow channel 110 closure.

[0190] Figure 14 This is a schematic diagram of a reset operation hole configuration provided in an embodiment of this application.

[0191] See Figure 14 As shown, a reset operation hole 104 can be provided on the base shell 100. The reset operation hole 104 can communicate with the mounting cavity 101 of the base shell 100. The support rod 240, the support platform 102, and part of the balance rod 220 can be exposed to the outside through the reset operation hole 104. When the user replaces the new water inlet valve 20, since the slide rod 234 and the negative pressure trigger rod 231 are already in the reset state, the end of the balance rod 220 connected to the slide rod 234 is restored to provide support by the slide rod 234. The user can use the reset operation hole 104 to re-support the support rod 240 on the support platform 102, so that the support rod 240 can restore its support for the balance rod 220. This allows the balance rod 220 to move the stop rod 211 and the first plug 212 away from the first through hole 113 to open the first through hole 113 and restore the water flow channel 110 to the connected state.

[0192] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0193] In the description of this invention, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0194] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0195] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water inlet system, characterized in that, include: Inlet valve (20); Failure response device (10), the failure response device (10) is connected to the water inlet valve (20); Water enters the water cup (30) through the water inlet valve (20) and flows into the water cup (30) through the failure response device (10). The failure response device (10) includes: The base shell (100) has a mounting cavity (101) and a water flow channel (110) is formed in the mounting cavity (101). One end of the water flow channel (110) is connected to the water inlet valve (20) and the other end is connected to the water cup (30). Water entering through the water inlet valve (20) enters the water cup (30) through the water flow channel (110). A fail-safe module (200) is at least partially installed in the mounting cavity (101). The fail-safe module (200) is configured to block the water flow channel (110) to stop supplying water to the water cup (30) when the water inlet valve (20) fails and continues to supply water to the water cup (30).

2. The water inlet system according to claim 1, characterized in that, The failure protection module (200) includes a flow-stopping component (210), a balance bar (220), and a negative pressure component (230). The balance bar (220) is connected to the flow-stopping assembly (210), and the negative pressure assembly (230) is connected to the balance bar (220); The base shell (100) also forms a first ventilation channel (120) that is connected to the water flow channel (110). The first ventilation channel (120) has a first air inlet (121) that is connected to the outside at one end away from the water flow channel (110). The negative pressure component (230) is installed at the first air inlet (121). When the water inlet valve (20) is working normally, the negative pressure component (230) is closed in the first air inlet (121), and the negative pressure component (230) provides support to the flow stop component (210) through the balance bar (220) so that the flow stop component (210) opens the water flow channel (110). When the water inlet valve (20) fails, a negative pressure is generated in the first ventilation channel (120). Under the action of the negative pressure, the negative pressure component (230) opens the first air inlet (121) and removes the support for the balance bar (220) and the flow stop component (210) so that the flow stop component (210) closes the water flow channel (110).

3. The water inlet system according to claim 2, characterized in that, The base shell (100) also has a second ventilation channel (130) connected to the water flow channel (110), and the end of the second ventilation channel (130) away from the water flow channel (110) is connected to the outside. When the water inlet valve (20) is working normally, outside gas enters the water flow channel (110) through the second ventilation channel (130) so that the negative pressure component (230) is closed in the first air inlet (121). When the water inlet valve (20) fails, the second ventilation channel (130) is closed, so that negative pressure is generated in the first ventilation channel (120), and the negative pressure component (230) opens the first air inlet (121) under the action of negative pressure and removes the support for the balance bar (220) and the flow stop component (210).

4. The water inlet system according to claim 2 or 3, characterized in that, The water flow channel (110) includes a first flow section (111) and a second flow section (112). The first flow section (111) and the second flow section (112) are connected. The first flow section (111) is located near the end of the water inlet valve (20) and is connected to the water inlet valve (20). The second flow section (112) is located near the water cup (30) and is connected to the water cup (30). The flow-stopping assembly (210) includes a flow-stopping rod (211), one end of which has a first plug (212), and the other end is slidably hinged to the balance rod (220). When the water inlet valve (20) is working normally, the flow-stopping rod (211) drives the first plug (212) away from the first flow section (111) under the support of the balance rod (220), so that the first flow section (111) and the second flow section (112) are connected to open the water flow channel (110). When the inlet valve (20) fails, the stop rod (211) can drive the first plug (212) to block between the first flow section (111) and the second flow section (112) to close the water flow channel (110).

5. The water inlet system according to claim 4, characterized in that, The flow-stopping component (210) also includes a first elastic element (213); One end of the first elastic element (213) is connected to the first plug (212), and the other end is connected to the base shell (100). When the water inlet valve (20) is working normally, the first elastic element (213) is compressed between the first plug (212) and the base shell (100), and when the balance bar (220) removes the support force, it drives the first plug (212) to move toward the first flow section (111) to seal between the first flow section (111) and the second flow section (112).

6. The water inlet system according to claim 3, characterized in that, The water flow channel (110) includes a large-diameter flow section (111a) and a small-diameter flow section (111b) that are interconnected. The large-diameter flow section (111a) is located near the end of the inlet valve (20) and is connected to the inlet valve (20). The inner diameter of the large-diameter flow section (111a) is larger than the inner diameter of the small-diameter flow section (111b). Both the first ventilation channel (120) and the second ventilation channel (130) are connected to the small flow section (111b). When the water flowing in from the inlet valve (20) flows from the large flow section (111a) into the small flow section (111b), a Venturi effect is generated, so that the small flow section (111b) can draw in external gas through the first ventilation channel (120) or the second ventilation channel (130). When the inlet valve (20) is working properly, external gas enters the small flow section (111b) through the second ventilation channel (130). When the inlet valve (20) fails, the second ventilation channel (130) is closed, and a negative pressure is generated in the first ventilation channel (120). Under the action of the negative pressure, the negative pressure component (230) is pushed to move, so as to open the first air inlet (121) and the negative pressure component (230) removes its support for the balance bar (220). The gas enters the small flow section (111b) through the first air inlet (121) and the first ventilation channel (120).

7. The water inlet system according to claim 6, characterized in that, The first ventilation channel (120) and the second ventilation channel (130) are also provided with a one-way sealing flap (250) at the part where they communicate with the small flow section (111b). The one-way sealing flap (250) is provided on the side close to the water flow channel (110). The one-way sealing flap (250) is configured to open only from the side of the first ventilation channel (120) and the second ventilation channel (130) toward the water flow channel (110). When the inlet valve (20) fails and the water flow channel (110) is closed, the one-way sealing flap (250) closes under the action of water remaining in the small flow section (111b) to isolate the first ventilation channel (120) and the water flow channel (110), so that the negative pressure in the first ventilation channel (120) is removed, and the negative pressure component (230) is reset and closed in the first air inlet (121).

8. The water inlet system according to claim 7, characterized in that, After the first ventilation channel (120) and the second ventilation channel (130) merge, they communicate with the small flow section (111b). The one-way sealing flap (250) seals the position after the first ventilation channel (120) and the second ventilation channel (130) merge.

9. The water inlet system according to claim 8, characterized in that, After the first ventilation channel (120) and the second ventilation channel (130) merge, there is a buffer channel (103) between them and the small flow section (111b), and the one-way sealing flap (250) is disposed in the buffer channel (103).

10. The water inlet system according to claim 3, characterized in that, The second ventilation channel (130) is connected to the water cup (30). When the water inlet valve (20) fails and continues to supply water to the water cup (30), the water level in the water cup (30) rises and flows into the second ventilation channel (130) to close the second ventilation channel (130).

11. The water inlet system according to any one of claims 6 to 9, characterized in that, The negative pressure assembly (230) includes a negative pressure trigger rod (231). The negative pressure trigger rod (231) is inserted into the first air inlet (121), and the end of the negative pressure trigger rod (231) located in the first air exchange channel (120) has a second plug (232). When the water inlet valve (20) is normal, the outside gas enters the small flow section (111b) through the second ventilation channel (130), and the second plug (232) is sealed on the first air inlet (121); When the inlet valve (20) fails, the second ventilation channel (130) is closed, and a negative pressure is generated in the first ventilation channel (120), causing the second plug (232) to drive the negative pressure trigger rod (231) to move toward the first ventilation channel (120) and open the first air inlet (121). External gas enters the small flow section (111b) through the first air inlet (121) and the first ventilation channel (120).

12. The water inlet system according to claim 11, characterized in that, The negative pressure component (230) also includes a second elastic element (233); One end of the second elastic element (233) is connected to the second plug (232), and the other end is connected to the inner wall of the first ventilation channel (120). The second elastic element (233) is used to drive the second plug (232) to close on the first air inlet (121).

13. The water inlet system according to claim 12, characterized in that, The negative pressure assembly (230) also includes a slide bar (234); One end of the slide rod (234) is hinged to the balance rod (220), and the other end of the slide rod (234) is sleeved on the negative pressure actuating rod (231) and slides in cooperation with the negative pressure actuating rod (231); The negative pressure actuating rod (231) is configured to provide a limiting fixation for the slide rod (234) when the water inlet valve (20) is normal, so that the slide rod (234) provides support for the balance rod (220); When the inlet valve (20) fails, the negative pressure actuating rod (231) moves and removes the limiting position on the slide rod (234), so that the slide rod (234) removes its support for the balance rod (220).

14. The water inlet system according to claim 13, characterized in that, The base shell (100) also has a mounting base (140). At least a portion of the slide rod (234) is slidably mounted in the mounting base (140), and one end of the slide rod (234) extends out of the mounting base (140) and is hinged to the balance bar (220). The end of the slide rod (234) located in the mounting base (140) cooperates with the negative pressure trigger rod (231). The slide rod (234) has a second through hole (2341) on the side wall at one end of the mounting base (140), and a limiting ball (235) is provided in the second through hole (2341). The inner wall of the mounting base (140) has a limiting platform (141). When the second plug (232) is closed in the first air inlet (121), the negative pressure actuating rod (231) pushes the limiting ball (235) to move toward the outside of the slide rod (234) and cooperate with the limiting platform (141) to limit and fix the slide rod (234); When the negative pressure actuating rod (231) moves and opens the first air inlet (121), the negative pressure actuating rod (231) removes its push on the limiting ball (235), the limiting ball (235) separates from the limiting platform (141) and removes its limiting fixation on the slide rod (234).

15. The water inlet system according to claim 14, characterized in that, The negative pressure component (230) also includes a third elastic element (236); The third elastic element (236) is sleeved on the slide rod (234), and one end of the third elastic element (236) is connected to the slide rod (234), and the other end is connected to the inner wall of the mounting base (140); The third elastic element (236) is used to drive the slide bar (234) to move toward the negative pressure actuating rod (231) to cooperate with the negative pressure actuating rod (231) so that the negative pressure actuating rod (231) and the limiting ball (235) restore the limiting and fixing of the slide bar (234); The elastic force of the third elastic element (236) is greater than that of the second elastic element (233).

16. The water inlet system according to claim 14 or 15, characterized in that, The negative pressure trigger rod (231) includes a first segment (2311) and a second segment (2312) connected together. The second plug (232) is located on the first segment (2311), and the diameter of the first segment (2311) is larger than the diameter of the second segment (2312); When the second plug (232) is closed in the first air inlet (121), the first segment (2311) is opposite to the limiting ball (235) and pushes the limiting ball (235) to move outward along the radial direction of the slide bar (234) so ​​that the limiting ball (235) cooperates with the limiting platform (141); When the negative pressure actuating rod (231) moves with the second plug (232) and opens the first air inlet (121), the second segment (2312) is opposite to the limiting ball (235), so that the negative pressure actuating rod (231) cancels the push on the limiting ball (235), so that the limiting ball (235) separates from the limiting platform (141) and cancels the limiting fixation on the slide rod (234).

17. A dishwasher, characterized in that, The water inlet system includes any one of the claims 1 to 16 above.

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