Respirator and dishwasher

Abstract

This invention provides a respirator and a dishwasher. The respirator includes: a housing; an air inlet adapted to communicate with the washing chamber of the dishwasher; an exhaust port adapted to communicate with the outside; a condensation channel connecting the air inlet and the exhaust port; a reflux structure disposed in the housing for guiding condensate in the condensation channel to the air inlet; and a cold air inlet formed on the housing and connected to the condensation channel. The respirator of this invention allows cold air to be introduced via the cold air inlet, thereby rapidly liquefying the airflow in the condensation channel and returning it to the washing chamber of the dishwasher through the reflux structure and the air inlet. This significantly reduces the risk of condensate overflow caused by condensate residue remaining on the bottom wall of the respirator. Furthermore, the respirator of this invention has a simple structure, is easy to manufacture, safe and reliable to use, and is easy to implement and promote.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to a respirator and a dishwasher. Background Technology

[0002] Breathers are used in dishwashers to balance the internal and external air pressure. In existing technology, a breather generally includes a housing, an air inlet, and an air outlet. The air inlet is designed to connect to the dishwasher's washing chamber, while the air outlet connects to the outside. During operation, water vapor generated in the washing chamber flows into the breather through the air inlet, where it is condensed and liquefied. Finally, the airflow is discharged to the outside through the air outlet, preventing the direct release of high-humidity steam and potential corrosion to the surrounding environment (such as cabinets). However, after prolonged use, some condensate may remain on the bottom wall of the breather, potentially causing overflow. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the problem that condensate water remains on the bottom wall of the respirator during use, causing condensate water overflow, thereby providing a respirator and dishwasher that can treat condensate water backflow, thus avoiding condensate water overflow from the respirator.

[0004] To address the aforementioned problems, the first aspect of the present invention provides a respirator, comprising: a housing; an air inlet adapted to communicate with the washing chamber of a dishwasher; an exhaust port adapted to communicate with the outside; a condensation channel connecting the air inlet and the exhaust port; a reflux structure disposed in the housing for guiding condensate in the condensation channel to the air inlet; and a cold air inlet formed on the housing and connected to the condensation channel.

[0005] Furthermore, the cold air inlet is located below the air intake.

[0006] Furthermore, the recirculation structure includes a U-shaped baffle, with the opening side of the U-shaped baffle facing upwards and the bottom of the U-shaped baffle surrounding the air inlet.

[0007] Furthermore, a first blocking structure is provided inside the shell. The first blocking structure is located between the first side wall of the shell and the U-shaped baffle. A first flow-guiding section is formed between the U-shaped baffle and the top wall of the shell. A second flow-guiding section is formed between the first blocking structure and the first side wall. A first baffle is formed in the first flow-guiding section. The first baffle is inclined upward along the direction of airflow.

[0008] Furthermore, a second blocking structure is connected to the top of the first blocking structure. The second blocking structure extends toward the second sidewall, which is opposite to the first sidewall. The second blocking structure is spaced apart from the top wall, the first sidewall, and the second sidewall of the housing.

[0009] Furthermore, a cold air channel is formed between the first blocking structure and the U-shaped baffle, and the return flow structure also includes:

[0010] The first return channel is formed on the U-shaped baffle and connects the cold air channel and the air inlet;

[0011] The second return channel is located on the first blocking structure and connects the second diversion section with the cold air channel.

[0012] Furthermore, the second return channel includes a return flow hole disposed on the first blocking structure and a first guide plate disposed on the lower wall of the return flow hole. The two ends of the first guide plate are respectively located in the second diversion section and the cold air channel. The first return channel includes a flow passage hole disposed on the U-shaped baffle and a diversion baffle on one side of the U-shaped baffle. The diversion baffle extends to the bottom of the first guide plate and communicates with the air inlet through the flow passage.

[0013] Furthermore, a water baffle is provided inside the housing, which is located between the air inlet and the flow passage, and a flow gap is formed between the water baffle and the U-shaped baffle.

[0014] Furthermore, the cross-sectional area of ​​the flow-through hole is M, where M ≥ 20 mm. 2 ; and / or,

[0015] The width of the flow gap is L1, 1.5mm≤L1≤3mm.

[0016] Furthermore, the second diversion section includes a diversion branch located above the second return channel. The diversion branch is provided with a second baffle and a third baffle. The second baffle is connected to the first blocking structure, and the angle between the second baffle and the first blocking structure along the direction of airflow is an acute angle. The third baffle is connected to the first sidewall, and the angle between the third baffle and the first sidewall along the direction of airflow is an acute angle.

[0017] Furthermore, an anti-siphon channel is formed within the first blocking structure below the second return channel, and the respirator also includes a drainage channel disposed within the housing, which is connected to the anti-siphon channel.

[0018] Furthermore, a connecting port is provided at the connection between the second return channel and the anti-siphon channel, which connects the drainage channel with the exhaust port and the air inlet.

[0019] A second aspect of the present invention provides a dishwasher that includes the respirator provided in the first aspect of the present invention.

[0020] The present invention has the following advantages:

[0021] 1. As can be seen from the above technical solution, the respirator of the first aspect of the present invention adds a cold air inlet inside the housing, which is suitable for introducing cold air into the housing. Water vapor generated during the operation of the dishwasher can come into contact with the cold air introduced through the cold air inlet in the condensation channel and be rapidly condensed and liquefied. The condensate produced can be returned to the air inlet through the return structure, thus being reused by the dishwasher's washing chamber. Therefore, the respirator of the present invention can introduce cold air through the cold air inlet, thereby rapidly liquefying the airflow in the condensation channel and returning it to the dishwasher's washing chamber through the return structure and air inlet, which can greatly reduce the risk of condensate overflow caused by condensate residue remaining on the bottom wall of the respirator. Furthermore, the respirator of the present invention has a simple structure, is easy to manufacture, is safe and reliable to use, and is easy to implement and promote.

[0022] 2. The cold air inlet is positioned below the air intake. This allows the airflow exiting the intake to immediately merge with the cold air, rapidly condensing the water vapor into condensate. Furthermore, since the cold air inlet is below the intake, and hot steam flows upwards, it prevents turbulence caused by hot steam escaping through the cold air inlet. It's important to note that "cold air inlet below the intake" means the cold air inlet's height is lower than the intake's height; it doesn't restrict the cold air inlet's horizontal position. The cold air inlet can be positioned directly below or diagonally below the intake.

[0023] 3. The recirculation structure includes a U-shaped baffle. The open side of the U-shaped baffle faces upward, and the bottom of the U-shaped baffle surrounds the air inlet. The open side of the U-shaped baffle can collect condensate and guide it to the air inlet at the bottom.

[0024] 4. A first blocking structure is provided inside the shell. The first blocking structure is located between the first side wall of the shell and the U-shaped baffle. A first drainage section is formed between the U-shaped baffle and the top wall of the shell. A second drainage section is formed between the first blocking structure and the first side wall. Therefore, the first blocking structure can divide the condensation channel into the first drainage section and the second drainage section, which can cause the airflow to bypass the first blocking structure, help to prolong the airflow path, prolong the residence time of the airflow in the respirator, and promote the full condensation and liquefaction of water vapor in the airflow. A first baffle is formed in the first drainage section. The first baffle is inclined upward along the direction of airflow movement. The first baffle can both turbulent the airflow and slow down the airflow speed in the shell, and exchange heat with the water vapor carried in the airflow, promote the liquefaction of water vapor on it, and guide the condensed water produced by liquefaction to fall into the return structure and flow back to the air inlet.

[0025] 5. A second blocking structure is connected to the top of the first blocking structure. The second blocking structure extends toward the second sidewall. The second sidewall is opposite to the first sidewall. The second blocking structure is spaced apart from the top wall, the first sidewall, and the second sidewall of the shell. The second blocking structure can further extend the length of the condensation channel, promoting the full liquefaction of water vapor carried in the airflow. The second blocking structure is configured to tilt upwards along the airflow direction and extend above the U-shaped baffle, enabling heat exchange with the humid water vapor and guiding the condensate generated by liquefaction back into the U-shaped baffle.

[0026] 6. A cold air passage is formed between the first blocking structure and the U-shaped baffle. The recirculation structure also includes a first recirculation passage and a second recirculation passage. The first recirculation passage is formed on the U-shaped baffle and connects the cold air passage and the air inlet; the second recirculation passage is set on the first blocking structure and connects the second guide section and the cold air passage. The second recirculation passage can guide the condensate generated in the second guide section into the cold air passage. The first recirculation passage can guide the condensate in the cold air passage into the air inlet. The first and second recirculation passages can cooperate with each other to promote the full recovery of condensate in the condensation passage. After passing through the first and second guide sections, almost no condensate is generated at the end of the condensation passage. If there is still a very small amount of condensate, it can be naturally evaporated through the exhaust port during the intervals when the user uses the dishwasher.

[0027] 7. The second return flow channel includes a return flow hole disposed on the first blocking structure and a first guide plate disposed on the lower wall of the return flow hole. The two ends of the first guide plate are located in the second diversion section and the cold air channel, respectively. The first return flow channel includes a flow passage hole disposed on the U-shaped baffle and a diversion baffle rib disposed on one side of the U-shaped baffle. The diversion baffle rib extends to the lower part of the first guide plate and communicates with the air inlet through the flow passage. The cross-sectional area of ​​the return flow hole is not less than 20 mm². 2 This can prevent the formation of a water film in the return flow hole and prevent water in the return flow hole from flowing out into the first return channel.

[0028] 8. A water-blocking plate is installed inside the housing. The water-blocking plate is located between the air inlet and the flow passage, forming a flow gap between the water-blocking plate and the U-shaped baffle. The water-blocking plate prevents washing water splashed from the dishwasher's washing chamber during the washing process from entering the breather through the first return channel, causing water accumulation inside the breather. The flow gap allows condensate generated in the first return channel to pass through and return to the air inlet. To avoid the formation of a water film at the filter gap, which would hinder the return of condensate, the width of the flow gap is set to L1. 1.5mm ≤ L1 ≤ 3mm. When the width of the flow gap is within the above range, the water-blocking plate effectively prevents washing water in the washing chamber from splashing into the first return channel through the air inlet, while ensuring that condensate can smoothly pass through the flow gap into the air inlet.

[0029] 9. The second diversion section includes a diversion branch located above the second return channel. The diversion branch is equipped with a second baffle and a third baffle. The second baffle is connected to the first blocking structure, and the angle between the second baffle and the first blocking structure along the airflow direction is an acute angle. The third baffle is connected to the first sidewall, and the angle between the third baffle and the first sidewall along the airflow direction is an acute angle. The second and third baffles can exchange heat with the water vapor carried in the airflow, promoting the liquefaction of the water vapor on them. There are no excessive constraints on the number and arrangement of the second and third baffles. The staggered arrangement of the second and third baffles can guide the airflow in a serpentine flow within the second diversion section, further extending the length of the condensation channel. Each second baffle can guide the condensate on it to the third baffle below it. The third baffle can guide the condensate on it to the second baffle below it. The baffle closest to the first guide plate above the first guide plate is preferably the third baffle, which extends above the first guide plate and can guide the condensate on it into the first guide plate. The first, second, and third retaining ribs can all be straight or wavy.

[0030] 10. An anti-siphon channel is formed within the first blocking structure, located below the second return channel. The breather also includes a drain channel within the housing, which communicates with the anti-siphon channel. The anti-siphon channel serves both as part of the first blocking structure, extending the condensation channel, and as a connection between the dishwasher's washing chamber, outside air, and the drain channel, preventing negative pressure from being generated at the drain channel and causing the washing water inside the dishwasher to be sucked away. A connecting port is provided at the junction of the second return channel and the anti-siphon channel, connecting the drain channel with the exhaust port and the air inlet.

[0031] 11. The second aspect of the present invention relates to a dishwasher, which includes the respirator provided in the first aspect of the present invention. Therefore, the dishwasher of the second aspect of the present invention has the beneficial effects of the respirator of the first aspect of the present invention, that is, it can overcome the defect in the prior art that the condensate generated by the dishwasher during use will remain on the bottom wall of the respirator, causing the condensate to overflow, and can perform condensate return treatment to avoid the respirator from overflowing. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 A cross-sectional view of the respirator of Embodiment 1 of the present invention at one angle is shown;

[0034] Figure 2 A cross-sectional view of the respirator of Embodiment 1 of the present invention is shown from another angle;

[0035] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Breathing apparatus; 1. Shell; 11. First sidewall; 12. Second sidewall; 21. Air inlet; 22. Exhaust outlet; 23. Condensation channel; 3. Cold air inlet; 4. Drainage channel; 51. First baffle; 52. Second baffle; 53. Third baffle; 61. U-shaped baffle; 62. First return channel; 621. Through-flow hole; 622. Drainage baffle; 63. Second return channel; 63a. Return-flow hole; 63b. First guide plate; 633. Anti-siphon channel; 634. Connecting port; 71. First blocking structure; 72. Second blocking structure; 8. Water baffle; 81. Through-flow gap. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0039] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Example 1

[0043] Figure 1 A cross-sectional view of the respirator 100 of Embodiment 1 of the present invention is shown at one angle. Figure 2 A cross-sectional view of the respirator 100 according to Embodiment 1 of the present invention is shown from another angle. (See figure) Figure 1 and Figure 2 As shown, this embodiment relates to a respirator 100, including a housing 1, an air inlet 21, an exhaust outlet 22, a condensation channel 23, a reflux structure, and a cold air inlet 3. The air inlet 21 is adapted to communicate with the washing chamber of a dishwasher. The exhaust outlet 22 is adapted to communicate with the outside environment. The condensation channel 23 connects the air inlet 21 and the exhaust outlet 22. The reflux structure is disposed in the housing 1 and is used to guide condensate from the condensation channel 23 to the air inlet 21. The cold air inlet 3 is formed on the housing 1 and communicates with the condensation channel 23. The cold air inlet 3 can be a through hole formed on the housing 1. The airflow carrying water vapor introduced through the air inlet 21 automatically rises due to its higher temperature, creating a negative pressure above the cold air inlet 3. This forces external cold air to be forced into the housing 1 through the cold air inlet 3 and merge with the airflow, thereby promoting the liquefaction of the airflow into condensate. This allows the respirator 100 of this embodiment to mix water vapor with cold air without the need for an additional power source, saving manufacturing costs. Preferably, the cold air inlet 3 can also be connected to a fan. The fan can blow a large amount of low-temperature air into the housing 1, promoting thorough mixing of the low-temperature air with the water vapor carried in the airflow and further promoting the liquefaction of the airflow into condensate. The housing 1 preferably includes a first half-shell and a second half-shell. The first half-shell and the second half-shell are preferably, but not limited to, fixedly connected by welding, riveting, snap-fitting, or threaded connection.

[0044] As can be seen from the above technical solution, the respirator 100 of this embodiment adds a cold air inlet 3 inside the housing 1, which is suitable for introducing cold air into the housing 1. Water vapor generated during the operation of the dishwasher can come into contact with the cold air introduced through the cold air inlet 3 in the condensation channel 23 and be rapidly condensed and liquefied. The condensate produced can be returned to the air inlet 21 through the return structure, thus being reused in the dishwasher's washing chamber. Therefore, the respirator 100 of this embodiment can introduce cold air through the cold air inlet 3, thereby rapidly liquefying the airflow in the condensation channel 23, and returning it to the dishwasher's washing chamber through the return structure and air inlet 21, which can greatly reduce the risk of condensate overflow caused by condensate residue remaining on the bottom wall of the respirator 100. Furthermore, the respirator 100 of this embodiment has a simple structure, is easy to manufacture, is safe and reliable to use, and is easy to implement and promote.

[0045] The cold air inlet 3 can be located on one side of the air inlet 21, or multiple inlets can be arranged around the air inlet 21, or it can be located above the air inlet 21 and connected to the condensation channel 23. Preferably, in this embodiment, the cold air inlet 3 is located below the air inlet 21, which allows the airflow to immediately merge with the cold air after flowing out of the air inlet 21 and be quickly liquefied into condensate. At the same time, since the cold air inlet 3 is located below the air inlet 21, and hot steam flows from bottom to top, it can prevent hot steam from being discharged through the cold air inlet and causing airflow turbulence. It should be noted that "the cold air inlet 3 is located below the air inlet 21" means that the height of the cold air inlet 3 is lower than the height of the air inlet 21, and does not restrict the horizontal position of the cold air inlet 3. The cold air inlet 3 can be located directly below the air inlet 21 or diagonally below the air inlet 21.

[0046] The recirculation structure is preferably, but not limited to, V-shaped or L-shaped. Preferably, in this embodiment, the recirculation structure includes a U-shaped baffle 61. The open side of the U-shaped baffle 61 is arranged facing upwards, and the bottom of the U-shaped baffle 61 surrounds the air inlet 21. The open side of the U-shaped baffle 61 can collect condensate and guide it to the air inlet 21 at the bottom.

[0047] In this embodiment, the housing 1 preferably also includes a first blocking structure 71. The first blocking structure 71 is located between the first side wall 11 of the housing 1 and the U-shaped baffle 61. A first drainage section is formed between the U-shaped baffle 61 and the top wall of the housing 1. A second drainage section is formed between the first blocking structure 71 and the first side wall 11. Therefore, the first blocking structure 71 can divide the condensation channel 23 into a first drainage section and a second drainage section, which can cause the airflow to bypass the first blocking structure 71, help to extend the flow path of the airflow, extend the residence time of the airflow in the respirator 100, and promote the full condensation and liquefaction of water vapor in the airflow. Preferably, a first baffle 51 is formed in the first drainage section. The first baffle 51 is inclined upward along the direction of airflow movement. The first baffle 51 can both turbulent the airflow and slow down the flow speed of the airflow in the housing 1, and exchange heat with the water vapor carried in the airflow, promote the liquefaction of water vapor on it, and guide the condensed water generated by liquefaction to fall into the return structure and flow back to the air inlet 21.

[0048] In this embodiment, a second blocking structure 72 is connected to the top of the first blocking structure 71. The second blocking structure 72 extends toward the second sidewall 12. The second sidewall 12 is opposite to the first sidewall 11. The second blocking structure 72 is spaced apart from the top wall, the first sidewall 11, and the second sidewall 12 of the housing 1. The second blocking structure 72 can further extend the length of the condensation channel 23, promoting the full liquefaction of water vapor carried in the airflow. Preferably, the second blocking structure 72 is configured to tilt upward along the flow direction of the airflow and extend above the U-shaped baffle 61, enabling heat exchange with the humid water vapor and guiding the condensate generated by liquefaction back into the U-shaped baffle 61.

[0049] In this embodiment, a cold air channel is formed between the first blocking structure 71 and the U-shaped baffle 61. Figure 3 As shown, a cold air passage is formed between the first blocking structure 71 and the U-shaped baffle 61. The return structure also includes a first return passage 62 and a second return passage 63. The first return passage 62 is formed on the U-shaped baffle 61 and connects the cold air passage with the air inlet 21. The second return passage 63 is disposed on the first blocking structure 71 and connects the second guide section with the cold air passage.

[0050] Preferably, a fourth baffle and a fifth baffle are also provided in the cold air duct. The fourth baffle is connected to the first blocking structure 71 and extends downward toward the U-shaped baffle 61. The fourth baffle can exchange heat with the water vapor carried in the airflow and cause the water vapor to liquefy into condensate, and guide the condensate into the first return channel 62. The fifth baffle is connected to the U-shaped baffle 61 and extends downward toward the first blocking structure 71. The fifth baffle can exchange heat with the water vapor carried in the airflow and cause the water vapor to liquefy into condensate. When some of the airflow carrying water vapor enters the cold air duct, the fourth and fifth baffles can guide the condensate generated by the liquefaction of water vapor to flow back into the air inlet 21 through the first return channel 62, avoiding the accumulation of condensate at the bottom of the respirator 100 and causing overflow. The number and arrangement of the fourth and fifth baffles are not subject to excessive constraints. Preferably, in this embodiment, the fourth and fifth baffles are staggered, which can extend the airflow path in the cold air channel. The baffle closest to the first return channel 62 is preferably the fourth baffle, which extends above the first return channel 62, enabling the condensate to be completely transferred into the first return channel 62.

[0051] The second return channel 63 guides the condensate generated in the second guide section into the cold air channel. The first return channel 62 guides the condensate in the cold air channel into the air inlet 21. The first return channel 62 and the second return channel 63 work together to promote the full recovery of condensate in the condensation channel 23. After passing through the first and second guide sections, almost no condensate is generated at the end of the condensation channel 23. If there is still a very small amount of condensate, it can be naturally evaporated through the exhaust port 22 during the intervals when the user is using the dishwasher.

[0052] In this embodiment, the second return channel 63 includes a return flow hole 63a disposed on the first blocking structure 71 and a first guide plate 63b disposed on the lower wall of the return flow hole 63a. The two ends of the first guide plate 63b are respectively located in the second diversion section and the cold air channel. The first return channel 62 includes a flow passage hole 621 disposed on the U-shaped baffle 61 and a diversion baffle 622 disposed on one side of the U-shaped baffle 61. The diversion baffle 622 extends below the first guide plate 63b and communicates with the air inlet 21 through the flow passage hole 621. Preferably, the cross-sectional area of ​​the return flow hole 63a is not less than 20 mm². 2 This can prevent the formation of a water film in the return flow hole 63a and prevent the water in the return flow hole 63a from flowing out into the first return channel 62.

[0053] In this embodiment, a water-blocking plate 8 is preferably provided inside the housing 1. The water-blocking plate 8 is located between the air inlet 21 and the flow passage 621, and a flow gap 81 is formed between the water-blocking plate 8 and the U-shaped baffle 61. The water-blocking plate 8 can prevent the washing water splashed out of the dishwasher's washing chamber during the washing process from entering the respirator 100 through the first return channel 62 and causing water accumulation inside the respirator 100. The flow gap 81 allows the condensate generated in the first return channel 62 to pass through and return to the air inlet 21. In order to avoid the formation of a water film at the filter gap and hinder the return of condensate, the width of the flow gap 81 is preferably greater than 1 mm. More preferably, the width of the flow gap 81 is set to L1, and the range is 1.5 mm ≤ L1 ≤ 3 mm. When the width of the flow gap 81 is within the above range, the baffle plate 8 can effectively prevent the washing water in the washing chamber from splashing into the first return channel 62 through the air inlet 21, and can also ensure that the condensate can smoothly enter the air inlet 21 through the flow gap 81.

[0054] In this embodiment, the second diversion section includes a diversion branch located above the second return channel 63. The diversion branch is equipped with a second baffle 52 and a third baffle 53. The second baffle 52 is connected to the first blocking structure 71, and the angle between the second baffle 52 and the first blocking structure 71 along the airflow direction is an acute angle. The third baffle 53 is connected to the first sidewall 11, and the angle between the third baffle 53 and the first sidewall 11 along the airflow direction is an acute angle. The second baffle 52 and the third baffle 53 can exchange heat with the water vapor carried in the airflow, promoting the liquefaction of the water vapor on them. No excessive constraints are placed on the number and arrangement of the second baffle 52 and the third baffle 53. Preferably, the second baffle 52 and the third baffle 53 are staggered, which can guide the airflow in a serpentine flow in the second diversion section, further extending the length of the condensation channel 23. Each second baffle 52 can guide the condensate on it to the third baffle 53 below it. The third baffle 53 can guide the condensate on it to the second baffle 52 below. The baffle closest to the first guide plate 63b is preferably the third baffle 53, which extends above the first guide plate 63b and can guide the condensate on it into the first guide plate 63b. The first baffle 51, the second baffle 52 and the third baffle 53 can all be straight or wavy baffles.

[0055] In this embodiment, an anti-siphon channel 633 is formed within the first blocking structure 71 below the second return channel 63. The breather 100 also includes a drain channel 4 disposed within the housing 1, which communicates with the anti-siphon channel 633. The anti-siphon channel 633 serves both as part of the first blocking structure 71 to extend the condensation channel 23 and as a connection between the dishwasher's washing chamber, outside air, and the drain channel 4, preventing negative pressure from being generated at the drain channel 4 and causing the washing water inside the dishwasher to be sucked away. The anti-siphon channel 633 preferably, but is not limited to, having through holes on its side wall or top wall. Preferably, in this embodiment, a connecting port 634 is provided at the connection between the second return channel 63 and the anti-siphon channel 633, connecting the drain channel 4 with the exhaust port 22 and the air inlet 21. The breather 100 preferably also includes a water inlet channel, within which a flow meter for measuring water volume is provided.

[0056] Example 2

[0057] Example 2 relates to a dishwasher that includes the breather 100 of Example 1, and thus has the beneficial effects of the breather 100 of Example 1, namely, it can overcome the defect in the prior art that the condensate generated by the dishwasher during use will remain on the bottom wall of the breather 100 and the condensate is easy to overflow, and can perform condensate return treatment to avoid the breather 100 from overflowing.

[0058] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A respirator, characterized in that, include: Shell (1); An air inlet (21) is adapted to be connected to the washing chamber of a dishwasher; The exhaust port (22) is suitable for connecting to the outside world; A condensation channel (23) connects the air inlet (21) and the exhaust port (22); A reflux structure is provided in the housing (1) for diverting condensate in the condensation channel (23) to the air inlet (21); the reflux structure includes a U-shaped baffle (61); A cold air inlet (3) is formed on the housing (1) and is connected to the condensation channel (23); The housing (1) is further provided with a first blocking structure (71), which is located between the first side wall (11) of the housing (1) and the U-shaped baffle (61). A second drainage section is formed between the first blocking structure (71) and the first side wall (11). A cold air channel is formed between the first blocking structure (71) and the U-shaped baffle (61), and the return flow structure further includes: A first return channel (62) is formed on the U-shaped baffle (61) and connects the cold air channel with the air inlet (21); The second return channel (63) is disposed on the first blocking structure (71) and connects the second diversion section with the cold air channel.

2. The respirator according to claim 1, characterized in that, The cold air inlet (3) is located below the air inlet (21).

3. The respirator according to claim 1 or 2, characterized in that, The U-shaped baffle (61) is positioned with its opening side facing upwards, and the bottom of the U-shaped baffle (61) surrounds the air inlet (21).

4. The respirator according to claim 3, characterized in that, A first flow channel is formed between the U-shaped baffle (61) and the top wall of the shell (1), and a first baffle (51) is formed in the first flow channel. The first baffle (51) is inclined upward along the direction of airflow.

5. The respirator according to claim 4, characterized in that, The top of the first blocking structure (71) is connected to a second blocking structure (72), which extends toward the second sidewall (12). The second sidewall (12) is opposite to the first sidewall (11), and the second blocking structure (72) is spaced apart from the top wall of the housing (1), the first sidewall (11), and the second sidewall (12).

6. The respirator according to claim 5, characterized in that, The second return channel (63) includes a return flow hole (63a) provided on the first blocking structure (71) and a first guide plate (63b) provided on the lower wall of the return flow hole (63a). The two ends of the first guide plate (63b) are respectively located in the second diversion section and the cold air channel. The first return channel (62) includes a flow passage hole (621) provided on the U-shaped baffle (61) and a diversion baffle (622) provided on one side of the U-shaped baffle (61). The diversion baffle (622) extends to the bottom of the first guide plate (63b) and communicates with the air inlet (21) through the flow passage hole (621).

7. The respirator according to claim 6, characterized in that, The housing (1) is provided with a water baffle (8), which is located between the air inlet (21) and the flow passage (621). A flow gap (81) is formed between the water baffle (8) and the U-shaped baffle (61).

8. The respirator according to claim 7, characterized in that, The cross-sectional area of ​​the through hole (621) is M, where M ≥ 20 mm. 2 ; and / or, The width of the flow gap (81) is L1, 1.5mm≤L1≤3mm.

9. The respirator according to claim 5, characterized in that, The second diversion section includes a diversion branch located above the second return channel (63). The diversion branch is provided with a second baffle (52) and a third baffle (53). The second baffle (52) is connected to the first blocking structure (71), and the angle between the second baffle (52) and the first blocking structure (71) along the direction of airflow is an acute angle. The third baffle (53) is connected to the first sidewall (11), and the angle between the third baffle (53) and the first sidewall (11) along the direction of airflow is an acute angle.

10. The respirator according to claim 5, characterized in that, An anti-siphon channel (633) is formed in the first blocking structure (71) below the second return channel (63). The respirator (100) also includes a drainage channel (4) disposed in the housing (1), and the drainage channel (4) is connected to the anti-siphon channel (633).

11. The respirator according to claim 10, characterized in that, The second return channel (63) is provided with a connecting port (634) at the connection between it and the anti-siphon channel (633). The connecting port (634) connects the drainage channel (4) with the exhaust port (22) and the air inlet (21).

12. A dishwasher, characterized in that, The respirator (100) includes any one of claims 1 to 11.

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