Respirator with water return prevention structure and dish washing machine

Abstract

The utility model discloses a breather of a backwater prevention structure, which comprises a breather body, a drainage runner is arranged in the breather body, the drainage runner comprises a runner water inlet end and a runner water outlet end, the runner water outlet end is provided with a water outlet, the runner water inlet end is provided with a first water inlet, a one-way flow guide piece is arranged in the first water inlet, and the one-way flow guide piece is arranged in the first water inlet. And the one-way flow guide piece is used for guiding and conducting from the flow channel water inlet end to the flow channel drainage end. According to the utility model, through the non-return structure in the respirator, the drainage flow channel can be effectively stopped, and sewage can be prevented from flowing back into the water cup.

Description

Technical Field

[0001] This utility model relates to washing equipment, and more specifically, to a breather with an anti-backflow structure, and also to a dishwasher having the breather. Background Technology

[0002] Dishwashers are increasingly becoming a part of households, and their superior cleaning, drying, and sterilization effects have made them popular with consumers. However, most dishwashers on the market currently suffer from residual water. After draining, water from the ventilator's drain channel can flow back into the dishwasher's water cup. This residual water cannot be removed in time, causing secondary contamination inside the dishwasher, which can easily breed bacteria and produce odors, affecting the user experience. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a respirator and dishwasher with a backflow prevention structure, which can eliminate backflow generated in the drainage channel of the respirator.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A respirator with a backflow prevention structure includes a respirator body, wherein a drainage channel is provided within the respirator body. The drainage channel includes a channel inlet end and a channel outlet end. The channel outlet end has a drain port, and the channel inlet end has a first inlet. A unidirectional flow guide is provided inside the first inlet end, and the unidirectional flow guide is used to guide and conduct water from the channel inlet end to the channel outlet end.

[0006] The present invention is further configured such that the one-way flow guide is a check valve.

[0007] The present invention is further configured such that the check valve is a spring-loaded check valve.

[0008] The present invention is further configured such that the outer shell of the unidirectional flow guide is fixedly installed inside the first water inlet, and the outer shell of the unidirectional flow guide is sealed to the first water inlet.

[0009] The present invention is further configured such that the drainage channel includes an inverted U-shaped bend, and the inlet end and outlet end of the channel are located on the lower sides of the bend, respectively.

[0010] The present invention is further configured such that the respirator body is provided with a balancing air chamber, which is connected to the side of the bent head near the drain end of the flow channel through a balancing air hole; the highest point of the balancing air chamber is higher than the drain flow channel.

[0011] The present invention is further configured such that the drainage channel shown has a second water inlet.

[0012] The present invention is further configured such that the second water inlet is located at the drainage end of the drainage channel, and the height of the second water inlet is higher than that of the drainage outlet.

[0013] This utility model also provides a dishwasher, including a breather with the anti-backflow structure as described above, and a pump device. The pump device includes a pump inlet and a pump outlet. The pump inlet is connected to the lowest point of the dishwasher's water cup, and the pump outlet is connected to a second water inlet.

[0014] The present invention is further configured such that the pump device shown is a self-priming pump.

[0015] In summary, this utility model has the following beneficial effects:

[0016] By installing a one-way guide at the inlet of the respirator's drain channel, the sewage in the drain channel can be prevented from flowing back into the water cup, thus eliminating residual water in the water cup.

[0017] The one-way flow guide uses a spring-loaded check valve. The spring in the spring-loaded check valve can generate elastic pressure. When the drainage process ends, the check valve resets by the elastic force to prevent sewage backflow.

[0018] By opening a second water inlet in the drain channel of the breather, the second water inlet acts as an extended water inlet. In conjunction with the self-priming pump in the dishwasher, the water at the bottom of the dishwasher's water cup can be drained, thereby eliminating residual water at the bottom of the dishwasher's water cup. Attached Figure Description

[0019] Figure 1 This is a perspective view of a respirator with an anti-backflow structure in this embodiment;

[0020] Figure 2 This is a cross-sectional view of a respirator with a backflow prevention structure according to this embodiment;

[0021] Figure 3 This is a partial structural diagram of a dishwasher in this embodiment.

[0022] Reference numerals: Breathing apparatus body 10; Drainage channel 20; Bend head 21; Balance air chamber 22; Balance air hole 23; Channel inlet 30; First inlet 31; Channel drain end 40; Drain outlet 41; Second inlet 42; One-way flow guide 50; Pump device 60; Pump inlet 61; Pump outlet 62. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This embodiment discloses a respirator with an anti-backflow structure, referring to... Figure 1 , Figure 2 As shown, the device includes a respirator body 10, which has a drainage channel 20 inside. The drainage channel 20 is roughly U-shaped, with an inverted U-shaped bend 21 at the top and two sides extending downward to form a channel inlet 30 and a channel outlet 40, respectively.

[0025] The inlet end 30 of the flow channel has a first inlet 31, and the outlet end 40 of the flow channel has a outlet 41. When the breather body 10 is draining water, the water mainly flows in from the first inlet 31 of the inlet end 30 of the flow channel, flows through the bend head 21, and is discharged from the outlet 41 of the outlet end 40 of the flow channel.

[0026] To prevent backflow of water in the drain channel 20 and to avoid residual water in the dishwasher, a one-way flow guide 50 can be installed in the first water inlet 31. The one-way flow guide 50 can guide the water from the inlet end 30 of the channel to the drain end 40 of the channel, and when it is subjected to reverse water flow, the one-way flow guide 50 can automatically close to prevent sewage backflow.

[0027] The unidirectional flow guide 50 is a check valve, and a spring-loaded check valve can be selected. The spring in the spring-loaded check valve can generate elastic pressure. When the drainage process ends, the check valve resets by the elastic force to prevent sewage backflow.

[0028] The dimensions of the one-way flow guide 50 are adapted to the first water inlet 31, and the one-way flow guide 50 is embedded in the first water inlet 31. In order to further achieve a seal and prevent water leakage at the connection between the one-way flow guide 50 and the first water inlet 31, an annular sealing ring can be installed between the outer shell of the one-way flow guide 50 and the inner wall of the first water inlet 31, and a sealed connection is achieved through the annular sealing ring.

[0029] Reference Figure 2As shown, the highest point of the drainage channel 20 forms an inverted U-shaped bend 21, with the inlet end 30 and outlet end 40 located on the lower sides of the bend 21, respectively. To balance the air pressure in the exhaust channel 20, a balancing air chamber 22 can be provided inside the respirator body 10. The upper part of the balancing air chamber 22 can communicate with the external environment, and the balancing air chamber 22 is connected to the side of the bend 21 near the outlet end 40 of the channel through a balancing air hole 23; the highest point of the balancing air chamber 22 is higher than the drainage channel 20.

[0030] Reference Figure 1 As shown, in the respirator of this embodiment, the drain end 40 of the flow channel is also provided with a second inlet 42, and the height of the second inlet 42 is higher than that of the drain outlet 41. The second inlet 42 forms a branch pipe and extends outward to facilitate connection with the pipes that need to be connected.

[0031] The second inlet 42 is an extension inlet of the drain channel 20, serving as a supplementary drain pipe in the dishwasher. Wastewater can enter the drain channel 20 through the second inlet 42, and because a check valve is installed at the first inlet 31, wastewater is prevented from flowing back into the water cup at the bottom of the inner tank. Furthermore, the second inlet 42 is located at the drain end 40 of the channel, and its position is higher than the drain outlet 41, allowing water entering through the second inlet 42 to flow directly downwards out of the drain outlet 41. The second inlet 42 can also be blocked or sealed when not in use.

[0032] This embodiment also discloses a dishwasher, as shown in the following example. Figure 3 As shown, the respirator includes the anti-backflow structure as described in the above embodiment, and also includes a pump device 60 and a water cup (not shown in the figure). The water cup is located at the bottom of the dishwasher's inner tub. The pump device 60 includes a pump inlet 61 and a pump outlet 62. The pump inlet 61 of the pump device 60 is connected to the lowest point of the water cup in the dishwasher, and the pump outlet 62 of the pump device 60 is connected to the second water inlet 42. This pump device 60 is a self-priming pump, and unlike the drain pump at the bottom of the dishwasher's inner tub, it serves to supplement drainage and eliminate residual water in the dishwasher's water cup as much as possible.

[0033] When the dishwasher is draining, the drain pump operates to expel the wastewater inside. The wastewater enters through the first inlet 31 of the breather, flows through the drain channel 20, and then flows out through the drain outlet 41, thus achieving wastewater discharge. After the dishwasher drain pump finishes its operation, the internal pump device 60 operates. The pump device 60 is a self-priming pump, and its inlet 61 is connected to the lowest point of the dishwasher's water cup. Residual water in the water cup can flow into the inlet 61 of the pump device 60. When the pump device 60 operates, it can draw out the residual water in the water cup and discharge it into the drain channel 20 of the breather, thus removing the residual water from the water cup.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A respirator with an anti-backflow structure, characterized in that, The device includes a respirator body (10), which has a drainage channel (20) inside. The drainage channel (20) includes a channel inlet (30) and a channel outlet (40). The channel outlet (40) has a drain port (41). The channel inlet (30) has a first inlet (31). The first inlet (31) has a unidirectional flow guide (50) inside. The unidirectional flow guide (50) is used to guide and conduct water from the channel inlet (30) to the channel outlet (40).

2. The respirator with an anti-backflow structure according to claim 1, characterized in that, The one-way flow guide (50) is a check valve.

3. The respirator with an anti-backflow structure according to claim 2, characterized in that, The check valve is a spring-loaded check valve.

4. The respirator with an anti-backflow structure according to claim 1, characterized in that, The housing of the unidirectional flow guide (50) is fixedly installed inside the first water inlet (31), and the housing of the unidirectional flow guide (50) is sealed to the first water inlet (31).

5. The respirator with an anti-backflow structure according to claim 1, characterized in that, The drainage channel (20) includes an inverted U-shaped bend (21), with the inlet end (30) and outlet end (40) of the channel located on the lower sides of the bend (21), respectively.

6. The respirator with an anti-backflow structure according to claim 5, characterized in that, The respirator body (10) is provided with a balance air chamber (22), which is connected to the side of the bend head (21) near the drain end (40) of the flow channel through a balance air hole (23); the highest point of the balance air chamber (22) is higher than the drain flow channel (20).

7. The respirator with an anti-backflow structure according to claim 1, characterized in that, The drainage channel (20) shown is provided with a second inlet (42).

8. The respirator with an anti-backflow structure according to claim 7, characterized in that, The second inlet (42) is located at the drainage end (40) of the drainage channel (20), and the height of the second inlet (42) is higher than that of the drainage outlet (41).

9. A dishwasher, characterized in that, The respirator, including the anti-backflow structure as described in claim 7 or 8, further includes a pump device (60), the pump device (60) including a pump inlet (61) and a pump outlet (62), the pump inlet (61) being connected to the lowest point of the water cup in the dishwasher, and the pump outlet (62) being connected to a second water inlet (42).

10. A dishwasher according to claim 9, characterized in that, The pump device (60) is a self-priming pump.

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