Air intake and exhaust filtering device and water purifier comprising same

Abstract

The utility model provides an intake and exhaust filtering device and a water purifier comprising the same, the intake and exhaust filtering device is used for the water purifier, the water purifier comprises a water tank, the intake and exhaust filtering device comprises an intake cover, an exhaust cover and a main body, the intake cover and the exhaust cover are respectively arranged on two sides of the main body, and the lower part of the main body is provided with a ventilation pipeline. The ventilation pipeline is communicated with the water tank; an air inlet cavity is formed between the air inlet cover and the main body; an air outlet cavity is formed between the air outlet cover and the main body; the air inlet flow path is configured to be in a communicating state when water flows out of the water tank, so that external air enters the air inlet cavity from the air inlet cover and enters the ventilation pipeline through the air inlet cavity. The exhaust flow path is configured to be in a communication state when water enters the water tank, so that water vapor from the water tank enters the air outlet cavity from the ventilation pipeline and is exhausted from the air outlet cover through the air outlet cavity; the water purifier comprises the intake and exhaust filtering device. The intake and exhaust filtering device can achieve the effects of water-gas separation and bacterium breeding prevention.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field, especially a kind of inlet and exhaust filtering device and water purifier comprising it. BACKGROUND

[0002] Water purifier as a kind of domestic appliance, it includes filter element and water tank etc., so that the floating object, heavy metal, bacteria, virus, residual chlorine, silt, rust, microorganism etc. in water can be effectively removed by filter element, realize the purpose of filtering and purifying drinking water, but because in the process of water tank water inlet and water outlet, it is guaranteed that water inlet and water outlet are smooth, so water tank generally includes air port with external communication, internal air is communicated with external to achieve the above purpose, at this time dust, bacteria etc. in external air can enter water tank, pollute the water in water tank interior. Especially kitchen under water purification product, kitchen under harsh environment can lead to water in water tank bacteria breeding, or the peculiar smell in the air of kitchen enters water tank, leading to the peculiar smell of water outlet.

[0003] The means for preventing dust, bacteria etc. in external air from entering water tank in the prior art of water purifier is to set filter device on air port, such as PP cotton etc.

[0004] However, only set filter device on air port can block some impurities in external environment, because of the communication of water tank internal humid air, water vapor in water tank can lead to bacteria breeding in cotton sheet itself, thereby leading to poor water quality, and there is peculiar smell. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the defects that water vapor in water tank of prior art can lead to bacteria breeding in filter device cotton sheet itself, thereby leading to poor water quality, and there is peculiar smell, provide a kind of inlet and exhaust filtering device and water purifier comprising it.

[0006] The utility model solves the above technical problem by the following technical scheme:

[0007] A kind of inlet and exhaust filtering device, for water purifier, water purifier includes water tank, inlet and exhaust filtering device includes air inlet cover, air outlet cover and main body, air inlet cover and air outlet cover are respectively installed in the two sides of main body, the lower part of main body is equipped with ventilation pipeline, ventilation pipeline is used to communicate with water tank;

[0008] Air inlet cavity is formed between air inlet cover and main body, and air outlet cavity is formed between air outlet cover and main body;

[0009] Inlet and exhaust filtering device is formed with different time communication inlet flow path and exhaust flow path;

[0010] The air inlet flow path is configured to be in a communication state when the water tank is draining, so that external air enters the air inlet cavity from the air inlet cover and enters the air passage;

[0011] The air outlet flow path is configured to be in a communication state when the water tank is filling, so that water vapor from the water tank enters the air outlet cavity from the air passage and is discharged from the air outlet cover.

[0012] In the present scheme, the air inlet cover and the air outlet cover are respectively installed on the two sides of the main body, which is beneficial to uniform force on the main body and prevents the main body from tilting to one side; the lower part of the main body is provided with an air passage, which is used to communicate with the water tank, which is beneficial to the smoothness of water outlet of the water tank and the smoothness of water inlet of the water tank; the air inlet cover and the main body form an air inlet cavity, and the air outlet cover and the main body form an air outlet cavity, which makes the air inlet cover and the air outlet cover separate from the main body, and the air inlet cover and the air outlet cover and the external air do not directly and long-time contact the water in the water tank connected by the air passage in the lower part of the main body, so that the air inlet and outlet filter device achieves water vapor separation and prevents bacteria from breeding; the setting of the air inlet flow path enables the water tank to be subjected to the pressure of external air when the water tank is draining, so as to achieve the effect of smooth water outlet of the water tank; the setting of the air outlet flow path can prevent the water tank from being hindered by the pressure of water vapor when the water tank is filling; in addition, the closing of the above-mentioned flow path can achieve the effect of water vapor separation and prevent bacteria from breeding.

[0013] Preferably, the inside of the air inlet cavity is provided with a first filter sheet, the first filter sheet is attached to the inner wall of the air inlet cover, and the first filter sheet is arranged upstream of the air passage along the air inlet flow path;

[0014] The inside of the air outlet cavity is provided with a second filter sheet, the second filter sheet is attached to the inner wall of the air outlet cover, and the second filter sheet is arranged downstream of the air passage along the air outlet flow path.

[0015] In the present scheme, the inside of the air inlet cavity is provided with a first filter sheet, which can purify external air when the water tank is draining, prevent impurities in the external air from entering the air inlet and outlet filter device, and further prevent the impurities from entering the water tank and polluting the water in the water tank; the setting of the second filter sheet can make the water in the water vapor in the water tank be absorbed by the second filter sheet when the water tank is filling, so as to prevent corrosion and damage to other parts of the water purifier. The first filter sheet is attached to the inner wall of the air inlet cover, and the second filter sheet is attached to the inner wall of the air outlet cover, which can expand the space of the air inlet cavity and the air outlet cavity, and further increase the amount of external air entering and the amount of water vapor in the water tank being discharged, so as to improve the working efficiency of the water tank.

[0016] Preferably, the air passage pipe comprises an air inlet pipe and an air outlet pipe, the first air passage structure is arranged on the air inlet pipe, and the second air passage structure is arranged on the air outlet pipe, and the first air passage structure and the second air passage structure are capable of switching between an open state and a closed state.

[0017] When the air inlet flow path is in the communication state, the first air passage structure is in the open state to enable the air inlet pipe to communicate with the air inlet cavity.

[0018] When the air outlet flow path is in the communication state, the second air passage structure is in the open state to enable the air outlet pipe to communicate with the air outlet cavity.

[0019] In the present scheme, the air passage pipe comprises the air inlet pipe and the air outlet pipe, so that the air inlet flow path and the air outlet flow path do not interfere with and affect each other; the first air passage structure and the second air passage structure are capable of switching between the open state and the closed state, and the above arrangement can achieve the effects of keeping the water pressure in the water tank balanced and stable to prevent the water in the water tank from fluctuating greatly when the water tank neither discharges water nor takes in water, and achieving water-gas separation to prevent bacteria from breeding when the water tank discharges water and takes in water.

[0020] Preferably, the first air passage structure comprises a first mounting member and a first elastic member, the first mounting member is arranged on the air inlet pipe, the first mounting member is provided with a first air passage hole, and the first elastic member is used for opening and closing the first air passage hole; when the air inlet flow path is in the communication state, the first air passage hole is in the open state.

[0021] Preferably, the second air passage structure comprises a second mounting member and a second elastic member, the second mounting member is arranged on the air outlet pipe, the second mounting member is provided with a second air passage hole, and the second elastic member is used for opening and closing the second air passage hole; when the air outlet flow path is in the communication state, the second air passage hole is in the open state.

[0022] In the present scheme, the arrangement of the mounting member and the elastic member enables external air to enter the water tank through the through hole of the first mounting member when the water tank discharges water, so that the water tank discharges water smoothly, and by analogy, water vapor in the water tank can be discharged through the through hole of the second mounting member when the water tank takes in water, so that the water tank takes in water smoothly; in addition, the first elastic member is used for opening and closing the second air passage hole, and due to the elasticity of the first elastic member, the sealing of the second air passage hole is facilitated, and the water-gas separation effect of the air inlet and outlet filtering device is improved; by analogy, the second elastic member can also achieve this effect.

[0023] Preferably, the first air passage structure and the second air passage structure are the same in structure.

[0024] The first installation part is provided with a plurality of first air holes in a circumferential direction, and a first installation hole is formed in a central position of the first installation part; one end of the first elastic part is installed on the first installation part through the first installation hole, and the other end of the first elastic part is provided with a plurality of shielding parts arranged in a circumferential direction, and the plurality of shielding parts and the plurality of first air holes are arranged one by one; wherein, when the first air hole is in a closed state, the side of the shielding part facing the first installation part is attached to the first installation part, and the plurality of shielding parts correspond to the plurality of first air holes respectively; the first elastic part is configured to move relative to the first installation part under the action of external air pressure, so that a gap is formed between the side of the shielding part facing the first installation part and the first installation part, to remove the shielding of the plurality of shielding parts to the plurality of first air holes, so that the first air hole is in an open state.

[0025] In the present scheme, the plurality of shielding parts and the plurality of first air holes are arranged one by one, so that when the first air hole is in a closed state, the external gas is prevented from entering the air inlet pipe, to achieve the effect of water-gas separation, and when the first air hole is in an open state, the external gas enters the air inlet pipe to the maximum, to improve the working efficiency of the water tank; in addition, when the water tank discharges water, the air inlet and outlet filter device can automatically move the position of the first elastic part to open the first through hole, so as to transport the external gas into the air pipe, so that the air inlet and outlet filter device is more flexible for the water tank and the water purifier; and similarly, the second air hole structure also has this effect.

[0026] Preferably, a limiting part is arranged between any two adjacent first air holes, the limiting part protrudes from the first installation part towards the direction close to the first elastic part, and a recess is formed between any two adjacent shielding parts in a circumferential direction, and the limiting part is matched with the recess.

[0027] In the present scheme, the limiting part can prevent the shielding part from rotating in the circumferential direction and mistakenly opening the first through hole, so that the water tank is in any state, and the external gas can enter the water tank through the air inlet pipe to contact the water, thereby affecting the use effect, so that the above arrangement can effectively prevent the external gas from contacting the water for a long time to breed bacteria and affect the water quality; in addition, the limiting part protrudes from the first installation part towards the direction close to the first elastic part, and a recess is formed between any two adjacent shielding parts in a circumferential direction, and the limiting part is matched with the recess; the above arrangement can make the air inlet and outlet filter device compact, reduce the occupied space, and reduce the cost.

[0028] Preferably, the air pipe is provided with a partition plate in an axial direction, and the partition plate divides the air pipe into an air inlet pipe and an air outlet pipe.

[0029] In the scheme, the partition plate separates the air pipe into the air inlet pipe and the air outlet pipe, the above setting mode can realize the multifunctional use of the air pipe, integrates the air inlet pipe and the air outlet pipe on the air pipe, is favorable for simplifying the structure of the air inlet and outlet filtering device, and can also achieve the effect of reducing the cost.

[0030] Preferably, the air inlet and outlet filtering device comprises a plurality of filtering assemblies, each filtering assembly comprising an air pipe, an air inlet cavity, an air outlet cavity, a first air passage structure and a second air passage structure.

[0031] In the scheme, the setting of the plurality of filtering assemblies can improve the working efficiency of the water tank while realizing the water vapor separation of the air inlet and outlet filtering device without affecting the water quality in the water tank.

[0032] Preferably, the air pipe has a first end and a second end along the axial direction, the first end is located in the main body, and the second end extends out of the main body;

[0033] The first end is provided with a first mounting position and a second mounting position, the first mounting position and the second mounting position are oppositely arranged with the air inlet cover and the air outlet cover respectively, and the first mounting member and the second mounting member are mounted on the first mounting position and the second mounting position respectively.

[0034] In the scheme, the first end is located in the main body, and the second end extends out of the main body; the first end is provided with a first mounting position and a second mounting position, which is favorable for the air pipe to communicate with the water tank, and also plays a role of separating the external gas in the water tank from the external gas entering the air inlet and outlet filtering device by a certain distance, preventing direct contact and breeding of bacteria; the first mounting position and the second mounting position are oppositely arranged with the air inlet cover and the air outlet cover respectively, so that when the water tank discharges water, the external air is more convenient to enter the water tank through the first mounting position, and when the water tank fills water, the water vapor of the water tank is discharged out of the air outlet cover through the second mounting position more quickly.

[0035] The utility model also provides a water purifier, and the water purifier comprises the air inlet and outlet filtering device and the water tank.

[0036] The positive progress effect of the utility model lies in: the air inlet cover and the air outlet cover are respectively installed on the two sides of the main body, which is beneficial to the uniform stress of the main body left and right, and the main body is not easy to incline and loosen to one side; the lower part of the main body is provided with a ventilation pipeline, the ventilation pipeline is used for communicating with the water tank, which is beneficial to the gas in the ventilation pipeline entering the water tank to make the water tank outlet water smoothly, and is beneficial to the gas in the water tank discharging the water tank to make the water tank inlet water smoothly; the air inlet cover and the main body form an air inlet cavity, and the air outlet cover and the main body form an air outlet cavity, the above-mentioned structure setting mode makes the air inlet cover and the air outlet cover separate from the main body, the air inlet cover and the air outlet cover and external gas cannot directly and long time contact the water in the water tank connected by the ventilation pipeline of the lower part of the main body, so that the air inlet and outlet filter device achieves water gas separation and prevents the effect of breeding bacteria; the setting of the air inlet flow path makes the water tank outlet water can be subjected to the pressure of external gas, so as to achieve the effect of the water tank outlet water smoothly, the setting of the air outlet flow path can play the effect of preventing the water tank inlet water from being hindered by the pressure of water vapor, in addition, the closing of the above-mentioned flow path can achieve the effect of water gas separation and preventing the breeding of bacteria. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a structure schematic view of the air inlet and outlet filter device of the utility model one embodiment.

[0038] Figure 2 It is a sectional view of the air inlet and outlet filter device of the utility model one embodiment.

[0039] Figure 3 It is an internal structure schematic view of the air inlet and outlet filter device of the utility model another embodiment.

[0040] Figure 4 It is an internal structure schematic view of the first mounting piece of the utility model one embodiment.

[0041] Figure 5 It is an internal structure schematic view of the first elastic piece of the utility model one embodiment

[0042] BRIEF DESCRIPTION OF DRAWINGS:

[0043] Air inlet and outlet filter device 1

[0044] Air inlet cover 11

[0045] Air inlet cavity 111

[0046] First filter piece 112

[0047] Air outlet cover 12

[0048] Air outlet cavity 121

[0049] Second filter piece 122

[0050] Main body 13

[0051] Ventilation duct 131

[0052] Air inlet duct 1311

[0053] Air outlet duct 1312

[0054] Partition 1313

[0055] First mounting position 132

[0056] Second mounting position 133

[0057] First ventilation structure 14

[0058] First mounting member 141

[0059] First ventilation hole 1411

[0060] First mounting hole 1412

[0061] Limiting portion 1413

[0062] First elastic member 142

[0063] Shielding portion 1421

[0064] Recessed portion 1422

[0065] Second ventilation structure 15 DETAILED DESCRIPTION

[0066] The utility model will be described below in conjunction with the drawings, but the utility model is not limited to the scope of the embodiment.

[0067] As Figures 1 to 5 shown, the utility model provides an air inlet and outlet filtering device 1 for a water purifier, the water purifier comprising a water tank, the air inlet and outlet filtering device 1 comprising an air inlet cover 11, an air outlet cover 12 and a main body 13, the air inlet cover 11 and the air outlet cover 12 being respectively installed on the two sides of the main body 13, the lower part of the main body 13 being provided with a ventilation duct 131, and the ventilation duct 131 being used for communicating with the water tank; an air inlet cavity 111 is formed between the air inlet cover 11 and the main body 13, and an air outlet cavity 121 is formed between the air outlet cover 12 and the main body 13; the air inlet and outlet filtering device 1 forms an air inlet flow path and an air outlet flow path which are not simultaneously communicated; wherein the air inlet flow path is configured to be in a communicated state when the water tank discharges water, so that external gas enters the air inlet cavity 111 from the air inlet cover 11 and enters the ventilation duct 131 through the air inlet cavity 111; the air outlet flow path is configured to be in a communicated state when the water tank fills water, so that water vapor from the water tank enters the air outlet cavity 121 from the ventilation duct 131 and is discharged from the air outlet cover 12 through the air outlet cavity 121.

[0068] In this embodiment, the air inlet hood 11 and the air outlet hood 12 are respectively installed on both sides of the main body 13, which is beneficial to the even distribution of force on the left and right sides of the main body 13 and prevents it from tilting or loosening to one side. A ventilation pipe 131 is provided at the lower part of the main body 13. The ventilation pipe 131 is used to communicate with the water tank, which facilitates the entry of gas in the ventilation pipe 131 into the water tank for smooth water discharge and the discharge of gas from the water tank for smooth water intake. An air inlet chamber 111 is formed between the air inlet hood 11 and the main body 13, and an air outlet chamber 121 is formed between the air outlet hood 12 and the main body 13. The above structural arrangement makes the air inlet hood 11... The air intake hood 11 and the air outlet hood 12 are separated from the main body 13. The air intake hood 11 and the air outlet hood 12 will not directly and for a long time come into contact with the water in the water tank connected to the ventilation pipe 131 at the bottom of the main body 13, so that the air intake and exhaust filtration device 1 can achieve water-air separation and prevent the growth of bacteria. The air intake path is set so that the water tank can be subjected to the pressure of the external gas when water is discharged, so as to achieve the effect of smooth water discharge from the water tank. The exhaust path can prevent the water tank from being hindered by the pressure of water vapor when water is entering the water tank. In addition, the closure of the above-mentioned flow paths can achieve water-air separation and prevent the growth of bacteria.

[0069] It should be noted that the two sides of the main body 13 are recessed inward to form an air outlet chamber 121 and an air inlet chamber 111. When water is discharged from the water tank, the pressure inside the water tank is less than the external pressure, so that the air inlet path is open and external gas can enter the ventilation pipe 131 from the air inlet chamber 111. When water is discharged from the water tank, the pressure inside the water tank is greater than the external pressure, so that the air outlet path is open and water vapor in the water tank can enter the air outlet chamber 121 from the ventilation pipe 131. In addition, the ventilation pipe 131 can be set at any position on the lower part of the main body 13 that can communicate with the water tank.

[0070] Reference Figure 1 and Figure 2 It is understood that the air intake chamber 111 is provided with a first filter 112, which is attached to the inner wall of the air intake hood 11 and is located upstream of the ventilation pipe 131 along the air intake flow path; the air outlet chamber 121 is provided with a second filter 122, which is attached to the inner wall of the air outlet hood 12 and is located downstream of the ventilation pipe 131 along the exhaust flow path.

[0071] In the embodiment, the inside of the air inlet cavity 111 is provided with the first filter sheet 112, the setting of the first filter sheet 112 can purify the external air when the water tank discharges water, prevent the impurities of the external air from entering the air inlet and outlet filter device 1, and then entering the water tank to pollute the water in the water tank; the setting of the second filter sheet 122 can make the water in the water vapor in the water tank be absorbed by the second filter sheet 122 when the water tank discharges water, prevent corrosion and damage to other parts of the water purifier. The first filter sheet 112 is attached to the inner wall of the air inlet cover 11, and the second filter sheet 122 is attached to the inner wall of the air outlet cover 12 along the air inlet flow path, and the first filter sheet 112 is arranged on the upstream of the air passage 131. The above setting can expand the space of the air inlet cavity 111 and the air outlet cavity 121, and then increase the entering amount of the external air and the discharging amount of the water vapor in the water tank, so as to improve the working efficiency of the water tank.

[0072] It should be noted that the first filter sheet 112 can be PP cotton plus activated carbon, etc., for absorbing impurities in the external air; the second filter sheet 122 can be PP cotton, etc., for absorbing water in the water vapor in the water tank.

[0073] Referring to Figure 2 It should be understood that the air passage 131 includes an air inlet passage 1311 and an air outlet passage 1312, the first air passage structure 14 is installed on the air inlet passage 1311, the second air passage structure 15 is installed on the air outlet passage 1312, and the first air passage structure 14 and the second air passage structure 15 can be switched between the open state and the closed state; wherein, when the air inlet flow path is in the communication state, the first air passage structure 14 is in the open state to make the air inlet passage 1311 communicate with the air inlet cavity 111; when the air outlet flow path is in the communication state, the second air passage structure 15 is in the open state to make the air outlet passage 1312 communicate with the air outlet cavity 121.

[0074] In the embodiment, the air passage 131 includes the air inlet passage 1311 and the air outlet passage 1312, so that the air inlet flow path and the air outlet flow path do not interfere with each other and do not affect each other; the first air passage structure 14 and the second air passage structure 15 can be switched between the open state and the closed state, and the above setting can achieve the effect of keeping the water pressure in the water tank balanced and stable when the water tank neither discharges water nor discharges water, preventing the water in the water tank from fluctuating greatly; when the water tank discharges water and discharges water, the water vapor is separated, and the effect of preventing bacteria from breeding is achieved.

[0075] It should be noted that the positions of the air inlet passage 1311 and the air outlet passage 1312 can be interchanged, and the first air passage structure 14 and the second air passage structure 15 are arranged in parallel and opposite directions.

[0076] Referring to 2 to Figure 5It should be understood that the first ventilation structure 14 comprises a first mounting member 141 and a first elastic member 142, the first mounting member 141 is mounted on the air inlet duct 1311, the first mounting member 141 is provided with a first ventilation hole 1411, and the first elastic member 142 is used for opening and closing the first ventilation hole 1411; wherein, when the air inlet flow path is in the communication state, the first ventilation hole 1411 is in the open state; and / or, the second ventilation structure 15 comprises a second mounting member and a second elastic member, the second mounting member is mounted on the air outlet duct 1312, the second mounting member is provided with a second ventilation hole, and the second elastic member is used for opening and closing the second ventilation hole; wherein, when the air outlet flow path is in the communication state, the second ventilation hole is in the open state.

[0077] In the embodiment, the mounting member and the elastic member are arranged such that when the water tank discharges water, external air can enter the water tank through the through hole of the first mounting member 141 to make the water discharge of the water tank smooth, and by analogy, when the water tank fills water, water vapor in the water tank can be discharged through the through hole of the second mounting member to make the water filling of the water tank smooth, in addition, the first elastic member 142 is used for opening and closing the second ventilation hole, and due to the elasticity of the first elastic member 142, the sealing of the second ventilation hole is facilitated, and the water vapor separation effect of the air inlet and outlet filtering device 1 is improved, and by analogy, the second elastic member can also achieve this effect.

[0078] It should be noted that the shape of the first ventilation hole 1411 is not limited and can be circular, square, etc.; the first elastic member 142 is only a preferred structure arrangement, but in alternative embodiments, the first elastic member 142 can be arranged to be affected by air pressure and not have elasticity, such as a pressure valve.

[0079] Reference Figures 2 to 5 It should be understood that the first ventilation structure 14 and the second ventilation structure 15 have the same structure; the first mounting member 141 is provided with a plurality of first ventilation holes 1411 in the circumferential direction, and a first mounting hole 1412 is formed in the center of the first mounting member 141; one end of the first elastic member 142 is mounted to the first mounting member 141 through the first mounting hole 1412, and the other end of the first elastic member 142 is provided with a plurality of blocking portions 1421 arranged at intervals in the circumferential direction, and the plurality of blocking portions 1421 and the plurality of first ventilation holes 1411 are arranged one by one; wherein, when the first ventilation hole 1411 is in the closed state, the side of the blocking portion 1421 facing the first mounting member 141 is attached to the first mounting member 141, and the plurality of blocking portions 1421 correspondingly block the plurality of first ventilation holes 1411; the first elastic member 142 is configured to be movable relative to the first mounting member 141 under the action of external air pressure, so that a gap is formed between the side of the blocking portion 1421 facing the first mounting member 141 and the first mounting member 141, to remove the blocking of the plurality of blocking portions 1421 to the plurality of first ventilation holes 1411, so that the first ventilation hole 1411 is in the open state.

[0080] In the embodiment, the plurality of shielding portions 1421 and the plurality of first air holes 1411 are arranged one by one to prevent external gas from entering the air inlet pipe 1311 when the first air holes 1411 are in the closed state, so as to achieve the effect of water-gas separation, and to maximize the entry of external gas into the air inlet pipe 1311 when the first air holes 1411 are in the open state, so as to improve the working efficiency of the water tank; in addition, when the water tank is discharging water, the first elastic member 142 can be automatically moved to open the first air holes 1411 according to the external and internal pressure difference, so as to deliver external gas to the air pipe 131, so that the air inlet and outlet filtering device 1 is more flexible for the water tank and the water purifier; and similarly, the second air hole structure 15 also has the same effect.

[0081] It should be noted that the shape of the first mounting hole 1412 is not limited and can be circular, square, etc.; one end of the first elastic member 142 is shaped like a kiss to the first mounting hole 1412, so that the two can be completely fitted without gaps when installed on one piece, and the shape of the shielding portion 1421 is not limited; in addition, it should be noted that when the external and internal air pressures are balanced, the first elastic member 142 will automatically reset due to its elasticity, and when the internal air pressure is greater than the external air pressure, the first elastic member 142 will quickly reset due to the pressure difference.

[0082] It should be noted that the shape of the first mounting hole 1412 is not limited and can be circular, square, etc.; one end of the first elastic member 142 is shaped like a kiss to the first mounting hole 1412, so that the two can be completely fitted without gaps when installed on one piece, and the shape of the shielding portion 1421 is not limited; in addition, it should be noted that when the external and internal air pressures are balanced, the first elastic member 142 will automatically reset due to its elasticity, and when the internal air pressure is greater than the external air pressure, the first elastic member 142 will quickly reset due to the pressure difference. Figure 2 Figure 4 It should be noted that the shape of the first mounting hole 1412 is not limited and can be circular, square, etc.; one end of the first elastic member 142 is shaped like a kiss to the first mounting hole 1412, so that the two can be completely fitted without gaps when installed on one piece, and the shape of the shielding portion 1421 is not limited; in addition, it should be noted that when the external and internal air pressures are balanced, the first elastic member 142 will automatically reset due to its elasticity, and when the internal air pressure is greater than the external air pressure, the first elastic member 142 will quickly reset due to the pressure difference. Figure 5 It should be noted that the shape of the first mounting hole 1412 is not limited and can be circular, square, etc.; one end of the first elastic member 142 is shaped like a kiss to the first mounting hole 1412, so that the two can be completely fitted without gaps when installed on one piece, and the shape of the shielding portion 1421 is not limited; in addition, it should be noted that when the external and internal air pressures are balanced, the first elastic member 142 will automatically reset due to its elasticity, and when the internal air pressure is greater than the external air pressure, the first elastic member 142 will quickly reset due to the pressure difference.

[0083] It should be noted that the shape of the first mounting hole 1412 is not limited and can be circular, square, etc.; one end of the first elastic member 142 is shaped like a kiss to the first mounting hole 1412, so that the two can be completely fitted without gaps when installed on one piece, and the shape of the shielding portion 1421 is not limited; in addition, it should be noted that when the external and internal air pressures are balanced, the first elastic member 142 will automatically reset due to its elasticity, and when the internal air pressure is greater than the external air pressure, the first elastic member 142 will quickly reset due to the pressure difference.

[0084] ​It should be noted that the length of the limiting portion 1413 protruding can be such that when the first elastic member 142 is away from the first mounting member 141, the limiting portion 1413 is still matched with the recessed portion 1422, so as to ensure that the first elastic member 142 can be reset.

[0085] With reference to Figure 2 It should be understood that the air passage 131 is provided with a partition plate 1313 in the axial direction, and the partition plate 1313 separates the air passage 131 into the air inlet passage 1311 and the air outlet passage 1312.

[0086] In the embodiment, the partition plate 1313 separates the air passage 131 into the air inlet passage 1311 and the air outlet passage 1312, and the above arrangement can realize the multifunctional use of the air passage 131, integrate the air inlet passage and the air outlet passage on the air passage, be conducive to simplifying the structure of the air inlet and outlet filtering device, and also can achieve the effect of reducing the cost.

[0087] It should be noted that in other alternative embodiments, the air inlet passage 1311 and the air outlet passage 1312 can also be independently arranged on different air passages 131. As shown in Figure 3 The air passage 131 has two, one of which is provided with the air inlet passage 1311, and the other of which is provided with the air outlet passage 1312.

[0088] With reference to Figures 1 to 5 It should be understood that the air inlet and outlet filtering device 1 comprises a plurality of filtering assemblies, and each filtering assembly comprises an air passage 131, an air inlet cavity 111, an air outlet cavity 121, a first air passage structure 14 and a second air passage structure 15.

[0089] In the embodiment, the arrangement of the plurality of filtering assemblies can realize water-gas separation in the air inlet and outlet filtering device 1 without affecting the water quality in the water tank, while improving the working efficiency of the water tank and improving the water outlet and water inlet speed of the water tank.

[0090] It should be noted that the arrangement positions of the plurality of filtering assemblies can be interchanged, and the air passages 131 in each filtering assembly can be communicated with the air passages 131 of other filtering assemblies in the water tank.

[0091] With reference to Figure 2 It should be understood that the air passage 131 has a first end and a second end in the axial direction, the first end is located in the main body 13, and the second end extends out of the main body 13; the first end is provided with a first mounting position 132 and a second mounting position 133, the first mounting position 132 and the second mounting position 133 are respectively arranged opposite to the air inlet cover 11 and the air outlet cover 12, and the first mounting member 141 and the second mounting member are respectively arranged on the first mounting position 132 and the second mounting position 133.

[0092] In the embodiment, the first end is located in the main body 13, and the second end extends outward from the main body 13; the first end is provided with a first mounting position 132 and a second mounting position 133, which are beneficial to the communication of the air duct 131 with the water tank and also play a role in separating the external gas entering the air inlet and exhaust filter device 1 from the water tank by a certain distance to prevent direct contact and bacterial growth; the first mounting position 132 and the second mounting position 133 are respectively arranged opposite to the air inlet cover 11 and the air outlet cover 12, so that when the water tank is draining water, external air is more convenient to enter the water tank through the first mounting position 132, and when the water tank is filling water, the water vapor in the water tank is more quickly discharged from the air outlet cover 12 through the second mounting position 133.

[0093] It should be noted that the first mounting position 132 and the second mounting position 133 are annular, and the first mounting member 141 and the second mounting member are also adapted to be annular to improve the installation area and strengthen the installation strength to prevent falling off.

[0094] The specific mounting or connecting mode of the first mounting member 141 and the first mounting position 132 and the second mounting member and the second mounting position 133 is not limited, and any mounting or connecting mode suitable for this purpose in the prior art can be used, such as threaded connection or clamping connection.

[0095] The embodiment also provides a water purifier, which comprises the air inlet and exhaust filter device 1 and the water tank.

[0096] In the embodiment, the air inlet cover 11 and the air outlet cover 12 are respectively mounted on the two sides of the main body 13, which is beneficial to the uniform force on the main body 13 and prevents the main body 13 from tilting to one side; the lower part of the main body 13 is provided with the air duct 131, which is used to communicate with the water tank, which is beneficial to the smooth draining of the water tank and the smooth filling of the water tank by the gas in the air duct 131; the air inlet cover 11 and the main body 13 form an air inlet cavity 111, and the air outlet cover 12 and the main body 13 form an air outlet cavity 121, so that the air inlet cover 11 and the air outlet cover 12 are separated from the main body 13, and the air inlet cover 11 and the air outlet cover 12 and the external gas do not directly and for a long time contact the water in the water tank connected to the air duct 131 at the lower part of the main body 13, so that the air inlet and exhaust filter device 1 achieves water-gas separation and prevents bacterial growth; the setting of the air inlet flow path enables the water tank to be subjected to the pressure of external gas when draining water, so as to achieve the effect of smooth draining of the water tank; the setting of the air outlet flow path can prevent the water tank from being hindered by the pressure of water vapor when filling water; in addition, the closing of the above-mentioned flow path can achieve the effect of water-gas separation and prevention of bacterial growth.

[0097] In the description of the utility model, need understanding is, the term "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship is the orientation that the device or element is in normal use, just is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element that is indicated must have a particular orientation at any time, with a particular orientation structure and operation, therefore can not be understood as the restriction of the utility model in this aspect.

[0098] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only illustrative, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. An air intake and exhaust filter device for a water purifier, the water purifier comprising a water tank, characterized in that, The air inlet and exhaust filtering device comprises an air inlet cover, an air outlet cover and a main body, the air inlet cover and the air outlet cover are respectively installed on two sides of the main body, and a ventilation pipeline is arranged at a lower part of the main body and is used for communicating with the water tank; An air inlet cavity is formed between the air inlet cover and the main body, and an air outlet cavity is formed between the air outlet cover and the main body; The air inlet and exhaust filtering device is formed with an air inlet flow path and an exhaust flow path which are not simultaneously communicated; The air inlet flow path is configured to be in a communication state when the water tank discharges water, so that external air enters the air inlet cavity from the air inlet cover and enters the ventilation pipeline through the air inlet cavity; The exhaust flow path is configured to be in a communication state when the water tank takes in water, so that water vapor from the water tank enters the air outlet cavity from the ventilation pipeline and is discharged from the air outlet cover through the air outlet cavity.

2. The intake and exhaust air filtering device of claim 1, wherein A first filter sheet is arranged in the air inlet cavity, the first filter sheet is attached to an inner wall of the air inlet cover, and the first filter sheet is arranged upstream of the ventilation pipeline along the air inlet flow path; A second filter sheet is arranged in the air outlet cavity, the second filter sheet is attached to an inner wall of the air outlet cover, and the second filter sheet is arranged downstream of the ventilation pipeline along the exhaust flow path.

3. The intake and exhaust filtration device of claim 1, wherein, The ventilation pipeline comprises an air inlet pipeline and an air outlet pipeline, a first ventilation structure is arranged on the air inlet pipeline, a second ventilation structure is arranged on the air outlet pipeline, and the first ventilation structure and the second ventilation structure can be switched between an open state and a closed state; When the air inlet flow path is in the communication state, the first ventilation structure is in the open state, so that the air inlet pipeline is communicated with the air inlet cavity; When the exhaust flow path is in the communication state, the second ventilation structure is in the open state, so that the air outlet pipeline is communicated with the air outlet cavity.

4. The intake and exhaust air filtering device of claim 3, wherein The first ventilation structure comprises a first mounting member and a first elastic member, the first mounting member is arranged on the air inlet pipeline, a first ventilation hole is arranged on the first mounting member, and the first elastic member is used for opening and closing the first ventilation hole; when the air inlet flow path is in the communication state, the first ventilation hole is in the open state; And / or, the second ventilation structure comprises a second mounting member and a second elastic member, the second mounting member is arranged on the air outlet pipeline, a second ventilation hole is arranged on the second mounting member, and the second elastic member is used for opening and closing the second ventilation hole; when the exhaust flow path is in the communication state, the second ventilation hole is in the open state.

5. The intake and exhaust air filtering device of claim 4, wherein The first ventilation structure and the second ventilation structure have the same structure; The first installation piece is provided with a plurality of first ventilation holes in a circumferential direction, and a first installation hole is formed in a central position of the first installation piece; one end of the first elastic piece is installed on the first installation piece through the first installation hole, and the other end of the first elastic piece is provided with a plurality of shielding portions in a circumferential direction, and the plurality of shielding portions and the plurality of first ventilation holes are arranged one by one; when the first ventilation hole is in a closed state, the shielding portion is attached to the first installation piece on one side of the first installation piece, and the plurality of shielding portions correspondingly shield the plurality of first ventilation holes; the first elastic piece is configured to be movable relative to the first installation piece under the action of external air pressure, so that a gap is formed between the shielding portion on one side of the first installation piece and the first installation piece, so as to remove the shielding of the plurality of first ventilation holes by the plurality of shielding portions, and the first ventilation hole is in an open state.

6. The air intake and exhaust filtering device according to claim 5, wherein, Any two adjacent first ventilation holes are provided with a limiting portion, the limiting portion protrudes from the first installation piece towards the direction close to the first elastic piece, and a recess is formed between any two adjacent shielding portions in a circumferential direction, and the limiting portion is matched with the recess.

7. The inlet and exhaust filtration device of claim 3, wherein, The ventilation pipeline is provided with a partition plate in an axial direction, and the partition plate separates the ventilation pipeline into an air inlet pipeline and an air outlet pipeline.

8. The intake and exhaust air filtering device of claim 3, wherein The air intake and exhaust filtering device comprises a plurality of filtering assemblies, each filtering assembly comprising the ventilation pipeline, the air inlet cavity, the air outlet cavity, the first ventilation structure and the second ventilation structure.

9. The intake and exhaust air filtering device of claim 4, wherein The ventilation pipeline has a first end and a second end in an axial direction, the first end is located in the main body, and the second end extends out of the main body; The first end is provided with a first installation position and a second installation position, the first installation position and the second installation position are respectively arranged opposite to the air inlet cover and the air outlet cover, and the first installation piece and the second installation piece are respectively installed on the first installation position and the second installation position.

10. A water purifier characterized by comprising: The air intake and exhaust filtering device comprises a plurality of filtering assemblies, each filtering assembly comprising the ventilation pipeline, the air inlet cavity, the air outlet cavity, the first ventilation structure and the second ventilation structure.

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