Sparkling water maker having low-pressure maintenance function

Abstract

A sparkling water maker having a low-pressure maintenance function, comprising a main body (10), a gas cylinder (12), a water bottle (11), a first mounting seat (20), a first valve cavity (21), a first gas guide channel (22), a first valve (23), a pressure feedback shutdown structure, an active exhaust valve, an exhaust hole (25), and a first reset spring (26). After sparkling water is prepared, carbon dioxide in the water bottle (11) can be directly completely discharged by means of the active exhaust valve, so as to directly remove the water bottle (11). If a user does not need to directly drink the sparkling water after the preparation has been completed, carbon dioxide can be actively discharged without using the active exhaust valve, high-pressure carbon dioxide enters the first valve cavity (21) by means of the first gas guide channel (22) and is then discharged through the exhaust hole (25), and the amount of discharged carbon dioxide is controlled by means of the first valve (23), so that the water bottle (11) finally enters a low-pressure state having a relatively low carbon dioxide concentration. Since the water bottle (11) stills maintains a certain carbon dioxide pressure, carbon dioxide is not easily released from the sparkling water, thereby ensuring the concentration of the sparkling water; and residual pressure should be released when drinking is required.

Description

A sparkling water machine with low-pressure maintenance function Technical Field

[0001] This utility model relates to the field of sparkling water machines, and in particular to a sparkling water machine with a low-pressure maintenance function. Background Technology

[0002] A sparkling water maker is a device for preparing sparkling water. These products generally consist of a main unit and a water bottle. The water bottle is filled with water and attached to the main unit. The main unit contains a carbon dioxide cylinder and a gas passage connecting the cylinder and the water bottle. Sparkling water is prepared by controlling the opening and closing of the carbon dioxide cylinder to inject high-pressure carbon dioxide gas into the water. During the injection of carbon dioxide gas, the water bottle is under high pressure. Excess carbon dioxide gas must be released before the bottle can be removed. However, users often prepare sparkling water before drinking it. If the high-pressure carbon dioxide gas is released immediately after preparation, carbon dioxide will continuously precipitate out over time and temperature changes, resulting in a lower carbonation concentration and poorer taste when the water is ready to drink. Conversely, if the gas is released only before drinking, the bottle remains under excessive pressure, requiring high-quality water and potentially damaging it over time.

[0003] Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide a sparkling water machine with a low-pressure retention function.

[0005] The technical solution adopted by this utility model to solve the problem is: a sparkling water machine with low-pressure maintenance function, comprising:

[0006] The main unit is equipped with a gas cylinder, a water bottle, and a gas line for connecting the gas cylinder and the water bottle. A gas valve is installed on the gas line, and a switch for controlling the gas valve is installed on the main unit.

[0007] The first mounting base is provided, and the water bottle is detachably mounted on the first mounting base. The first mounting base is provided with a first valve chamber, which is connected to the water bottle through a first air guide channel. The surface of the first mounting base is provided with an exhaust hole connected to the first valve chamber. The first mounting base is also provided with a pressure feedback shutdown structure and an active exhaust valve connected to the water bottle.

[0008] A first valve body is disposed in the first valve cavity. The front end of the first valve body has a sealing valve head for sealing the end of the first air guide channel. A first return spring is connected to the first valve body to drive the first valve body to move toward the end of the first air guide channel. The ratio of the effective air pressure bearing area of ​​the first valve body in the first valve cavity to the cross-sectional area of ​​the end of the first air guide channel is the pressure ratio of the shutdown air pressure and the low pressure holding air pressure.

[0009] As a further improvement to the above technical solution, the surface of the first valve body is provided with a sealing element that cooperates with the inner wall of the first valve cavity, the first valve body is provided with a second valve cavity, the first valve body is provided with a second inlet hole and a second outlet hole that communicate with the second valve cavity, the second outlet hole communicates with the exhaust hole, and the second inlet hole communicates with a portion of the first valve cavity located between the sealing element and the end of the first air guide channel.

[0010] The second valve body is disposed in the second valve cavity. The second valve cavity is provided with a second return spring that is connected to the second valve body and drives the second valve body to seal the second inlet hole. The sealing air pressure of the second valve body on the second inlet hole is less than the low-pressure holding air pressure.

[0011] As a further improvement to the above technical solution, a second valve groove is provided at the front end of the second valve cavity, the second inlet hole is connected to the second valve groove, the cross-sectional area of ​​the end of the second valve groove is smaller than the cross-sectional area of ​​the second valve cavity, the second outlet hole is located at the rear end of the second valve groove, and an air guide gap is formed between the second valve body and the inner wall of the second valve cavity.

[0012] As a further improvement to the above technical solution, the sealing element is disposed at the end of the first valve body, and a pressure-bearing sealing surface is disposed in the first valve cavity located on the outer periphery of the exhaust hole and used to abut against the sealing element.

[0013] As a further improvement to the above technical solution, the switch includes an air intake connecting rod pivotally connected to the main unit and a locking connecting rod pivotally connected to the main unit. The air intake connecting rod opens and closes the air valve by swinging. An elastic reset device is connected to the air intake connecting rod. A locking position is provided on the air intake connecting rod. One end of the locking connecting rod is provided with a locking element that movably engages with the locking position. A third reset spring is provided on the locking connecting rod. When the air intake connecting rod is in the air valve open state, the third reset spring is used to drive the locking element to swing toward the locking position. The pressure feedback shutdown structure cooperates with the locking connecting rod to drive it to overcome the movement of the third reset spring.

[0014] As a further improvement to the above technical solution, the pressure feedback shutdown structure is a valve stem located at the end of the first valve body. The valve stem is inserted into the vent hole, and the length of the valve stem is greater than the length of the vent hole. When the gas pressure inside the water bottle reaches a specified value, the valve stem is completely pushed out of the first mounting base by the first valve body and presses the locking rod.

[0015] As a further improvement to the above technical solution, the second outlet is provided on the outer surface of the valve stem.

[0016] As a further improvement to the above technical solution, a limiting position is provided on the locking linkage, a driving part is provided on the outer side of the bottle opening, a top rod is provided on the first mounting base, and an intermediate swing rod located between the top rod and the limiting position is pivotally connected inside the main unit. The intermediate swing rod switches between a limiting state and a releasing state by swinging. In the limiting state, the end of the intermediate swing rod is located on the movement path of the limiting position, thereby limiting the locking piece from swinging toward the locking position. After the water bottle is installed on the first mounting base, the driving part can drive the top rod to move and drive the intermediate swing rod to swing to the releasing state. A fourth spring is provided inside the main unit to abut against the top rod and / or the intermediate swing rod. The fourth spring is used to drive the intermediate swing rod to reset to the limiting state.

[0017] As a further improvement to the above technical solution, the bottom of the first mounting base is provided with a mounting port, the inner wall of the mounting port is provided with a sliding groove, the top rod includes a slider disposed in the sliding groove and used to slide along the sliding groove, the bottom of the mounting port is provided with an inlet connected to the sliding groove, and the driving unit can enter the sliding groove through the inlet and drive the slider to slide.

[0018] As a further improvement to the above technical solution, the bottom of the main unit is provided with a second mounting base and a gas cylinder cover. The gas cylinder is detachably mounted on the second mounting base. A locking pin is provided on the outer periphery of the second mounting base. A rotating groove that rotatably engages with the locking pin is provided on the inner side of the gas cylinder cover. A locking groove is provided on the top of the gas cylinder cover. A locking switch is provided inside the main unit. The locking switch includes a drive key and a locking pin. An operating hole is provided on the bottom surface of the main unit. The drive key is located in the operating hole. The locking pin is located on the second mounting base. A fifth spring is provided on the main unit, which is connected to the locking pin and is used to drive the locking pin to move toward the locking groove. When the gas cylinder cover is rotated and locked onto the second mounting base, the locking pin is inserted into the locking groove.

[0019] The beneficial effects of this utility model are as follows: Through a pressure feedback shutdown structure, during the preparation of sparkling water, the gas filling operation stops when the pressure inside the water bottle reaches the set shutdown pressure value. After the sparkling water is prepared, the carbon dioxide gas inside the water bottle can be completely discharged directly through the active exhaust valve, allowing the user to remove the water bottle immediately after preparation. If the user does not need to drink the water directly after preparation, active exhaust can be performed without using the active exhaust valve. This solution, due to the setting of a first valve chamber and a first air guide channel, and the control of the ratio of the effective pressure-bearing area of ​​the first valve body to the cross-sectional area at the end of the first air guide channel, results in a smaller pushing force on the first valve body under the same pressure, as the cross-sectional area at the end of the first air guide channel is small. Therefore, only when the pressure inside the water bottle reaches the set shutdown pressure value can the air pressure overcome the elasticity of the first spring to open the first valve body. However, once the first valve body is opened, the effective pressure-bearing area of ​​the first valve body in contact with the air pressure increases, thus, under the same pressure, the air pressure exerts a greater force on the first valve body. The pressure inside the bottle is greater, and the first valve body is pushed open completely in an instant. At this time, the gas pressure inside the bottle is discharged through the vent. When the gas pressure inside the bottle is lower than the low-pressure holding pressure, the pushing force of the gas pressure on the first valve body in the first valve chamber is less than the elastic force of the first return spring. Therefore, the first valve body is reset, thereby closing the end of the first air guide channel, so that the gas pressure inside the bottle is no longer discharged. At this time, the bottle enters a low-pressure state with a relatively low carbon dioxide gas concentration. Since a certain carbon dioxide pressure is still maintained inside the bottle, carbon dioxide in the sparkling water is not easily released, thus ensuring the concentration of sparkling water. When drinking is needed, the remaining residual pressure can be discharged through the active vent valve body. Attached Figure Description

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 is a schematic diagram of one of the preferred embodiments of the present invention;

[0022] Figure 2 is a schematic diagram of the structure when the first valve body is not pushed in the cross-sectional state along the AA direction in Figure 1;

[0023] Figure 3 is a partial enlarged structural diagram of point B in Figure 2;

[0024] Figure 4 is a schematic diagram of the structure when the first valve body is pushed in the cross-sectional state along the AA direction in Figure 1;

[0025] Figure 5 is a magnified schematic diagram of the structure at point C in Figure 4;

[0026] Figure 6 is a schematic diagram of the cross-sectional structure in the DD direction of Figure 1;

[0027] Figure 7 is a schematic diagram of the cross-sectional structure in the EE direction of Figure 1;

[0028] Figure 8 is a second structural schematic diagram of a preferred embodiment of the present invention;

[0029] Figure 9 is an exploded view of this utility model;

[0030] Figure 10 is a partial enlarged structural diagram of point F in Figure 9;

[0031] Figure 11 is an exploded view of a portion of the structure of the first mounting base;

[0032] Figure 12 is a structural schematic diagram of the top rod, the intermediate swing rod, and the corresponding parts. Detailed Implementation

[0033] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] Referring to Figures 1 to 12, a sparkling water machine with a low-pressure holding function includes:

[0038] The host 10 is provided with a gas cylinder 12, a water bottle 11 and a gas line for connecting the gas cylinder 12 and the water bottle 11. A gas valve is provided on the gas line and a switch for controlling the gas valve is provided on the host 10.

[0039] The first mounting base 20 is provided, and the water bottle 11 is detachably mounted on the first mounting base 20. The first mounting base 20 is provided with a first valve chamber 21, which is connected to the water bottle 11 through a first air guide channel 22. The surface of the first mounting base 20 is provided with an exhaust hole 25 that is connected to the first valve chamber 21. The first mounting base 20 is also provided with a pressure feedback shutdown structure and an active exhaust valve that are connected to the water bottle 11.

[0040] The first valve body 23 is disposed in the first valve cavity 21. The front end of the first valve body 23 has a sealing valve head 24 for sealing the end of the first air guide channel 22. The first valve body 23 is connected to a first return spring 26 that drives the first valve body 23 to move toward the end of the first air guide channel 22. The ratio of the effective air pressure bearing area of ​​the first valve body 23 in the first valve cavity 21 to the cross-sectional area of ​​the end of the first air guide channel 22 is the pressure ratio of the shutdown air pressure and the low pressure holding air pressure.

[0041] The pressure feedback shutdown structure stops the gas filling process when the pressure inside the water bottle 11 reaches the set shutdown pressure value during the preparation of sparkling water. After the sparkling water is prepared, the carbon dioxide gas inside the water bottle 11 can be completely discharged directly through the active exhaust valve, so that the user can remove the water bottle 11 after the preparation is completed. If the user does not need to drink the contents directly after preparation, active venting can be performed without using the active venting valve. This solution incorporates a first valve chamber 21 and a first air guide channel 22, and controls the ratio of the effective pressure-bearing area of ​​the first valve body 23 to the cross-sectional area at the end of the first air guide channel 22. Because the cross-sectional area at the end of the first air guide channel 22 is small, the pushing force on the first valve body 23 is small under the same air pressure. Therefore, only when the air pressure inside the water bottle 11 reaches the set shutdown air pressure value can the air pressure overcome the elasticity of the first spring and open the first valve body 23. However, once the first valve body 23 is opened, the effective pressure-bearing area of ​​the first valve body 23 in contact with the air pressure increases. Therefore, under the same pressure, the air pressure exerts a greater force on the first valve body 23. The pressure is greater, and the first valve body 23 will be fully pushed open instantly. At this time, the air pressure in the water bottle 11 is discharged through the exhaust port 25. When the air pressure in the water bottle 11 is lower than the low pressure holding pressure, the pushing force of the air pressure on the first valve body 23 in the first valve chamber 21 is less than the elastic force of the first return spring 26. Therefore, the first valve body 23 is reset, thereby closing the end of the first air guide channel 22, so that the air pressure in the water bottle 11 is no longer discharged. At this time, the water bottle 11 enters a low pressure state with a relatively low carbon dioxide gas concentration. Since a certain carbon dioxide pressure is still maintained in the water bottle 11, the carbon dioxide in the sparkling water is not easy to precipitate, thus ensuring the concentration of sparkling water. When drinking, the remaining residual pressure can be discharged through the active exhaust valve body.

[0042] Further optimization is preferred, the surface of the first valve body 23 is provided with a sealing element 27 that cooperates with the inner wall of the first valve cavity 21, the first valve body 23 is provided with a second valve cavity 30, the first valve body 23 is provided with a second inlet hole 31 and a second outlet hole 32 that communicate with the second valve cavity 30, the second outlet hole 32 communicates with the exhaust hole 25, and the second inlet hole 31 communicates with the part of the first valve cavity 21 located between the sealing element 27 and the end of the first air guide channel 22;

[0043] The second valve body 34 is disposed in the second valve cavity 30. The second valve cavity 30 is provided with a second return spring 35 connected to the second valve body 34 and driving the second valve body 34 to seal the second inlet hole 31. The sealing air pressure of the second valve body 34 on the second inlet hole 31 is less than the low pressure holding air pressure. The meaning of "the sealing air pressure of the second valve body 34 on the second inlet hole 31 is less than the low pressure holding air pressure" is that when the second valve body 34 is pushed open, the air pressure required for it to reseal the second inlet hole 31 is lower than the value of the low pressure holding air pressure.

[0044] With this structure, when the gas pressure inside the water bottle 11 reaches the set shutdown pressure value, the first valve body 23 is first pushed open, allowing the gas inside the water bottle 11 to enter the first valve chamber 21. Then, because the first valve body 23 is sealed to the inner wall of the first valve chamber 21, the gas can only enter the second valve chamber 30 through the second inlet hole 31, thereby pushing open the second valve body 34. The gas then flows through the second outlet hole 32 to the exhaust hole 25, and finally exits outside the first mounting base 20. The purpose of setting the second valve chamber 30 and the second valve body 34 is to slow down the rate of automatic carbon dioxide gas discharge, thereby making the process of the gas pressure dropping inside the water bottle 11 more stable.

[0045] Further optimization is preferred, with a second valve groove 33 provided at the front end of the second valve cavity 30, the second inlet 31 communicating with the second valve groove 33, the cross-sectional area of ​​the end of the second valve groove 33 being smaller than the cross-sectional area of ​​the second valve cavity 30, the second outlet 32 ​​being located at the rear end of the second valve groove 33, and an air guide gap being formed between the second valve body 34 and the inner wall of the second valve cavity 30.

[0046] In this embodiment, the sealing element 27 is preferably disposed at the end of the first valve body 23. The first valve cavity 21 has a pressure-bearing sealing surface located on the outer periphery of the exhaust hole 25, which abuts against the sealing element 27. In this way, when the first valve body 23 is pushed open, the sealing element 27 can better seal against the inner wall of the first valve cavity 21, thereby preventing gas from flowing directly through the first valve cavity 21 into the exhaust hole 25. In other embodiments, the sealing element 27 can also be sleeved on the middle of the outer periphery of the first valve body 23.

[0047] For example, if the set shutdown air pressure is 0.8 MPa and the low-pressure holding air pressure is 0.2 MPa, the pressure of the first return spring 26 on the first valve body 23 is 10 N. At this time, the ratio of the cross-sectional area of ​​the end of the first air guide channel 22 to the effective area of ​​the first valve body 23 that bears the air pressure is 1:4. Because the orifice at the end of the first air guide channel 22 is small, when the first valve body 23 closes the end of the first air guide channel 22, the contact area between the carbon dioxide gas in the water bottle 11 and the first valve body 23 is only the area of ​​the orifice at the end of the first air guide channel 22. Therefore, only when the air pressure inside the water bottle 11 reaches 0.8 MPa can a force exceeding 10 N be generated on the first valve body 23 to push it open. However, once the first valve body 23 is closed... When the opening is pushed open, the carbon dioxide gas in the water bottle 11 enters the first valve chamber 21. At this time, the effective contact area between the carbon dioxide gas and the first valve body 23, which pushes the first valve body 23 to move, increases fourfold. Under the condition that the gas pressure remains unchanged, the pushing force on the first valve body 23 increases fourfold, exceeding 40N. At this time, the first valve body 23 will be pushed open completely in an instant. When the first valve body 23 is fully opened, the carbon dioxide gas in the water bottle 11 is continuously discharged along the exhaust port 25, and the gas pressure continuously decreases. When the gas pressure of the carbon dioxide gas in the water bottle 11 drops to 0.2Mpa, the effective pushing force of the carbon dioxide gas on the first valve body 23 drops below 10N again. Therefore, the first valve body 23 is retracted, thereby blocking the end of the first gas guide channel 22.

[0048] Based on the above scheme, it is preferable that the first valve body 23 and the inner wall of the first valve cavity 21 are fitted with a clearance.

[0049] Further optimization is preferred, the switch includes an intake connecting rod 40 pivotally connected to the main unit 10 and a locking connecting rod 42 pivotally connected to the main unit 10. The intake connecting rod 40 opens and closes the air valve by swinging. An elastic reset device is connected to the intake connecting rod 40. A locking position 41 is provided on the intake connecting rod 40. One end of the locking connecting rod 42 is provided with a locking piece 43 that is movably locked with the locking position 41. A third reset spring 44 is provided on the locking connecting rod 42. When the intake connecting rod 40 is in the air valve open state, the third reset spring 44 is used to drive the locking piece 43 toward the valve. When the locking position 41 swings, the pressure feedback stop structure, in conjunction with the locking rod 42, drives it to overcome the movement of the third return spring 44. The user presses the air intake rod 40 to open the air valve. At this time, under the action of the third return spring 44, the locking rod 42 engages with the locking position 41 on the air intake rod 40, thus automatically performing continuous air intake. Then, when the air pressure inside the water bottle 11 reaches the set stop pressure, the pressure feedback stop structure drives the locking rod 42 to swing, thereby disengaging the locking member 43 from the locking position 41 and resetting the air intake rod 40. The pressure feedback stop structure can be a pressure sensor connected to the water bottle 11 and a drive motor electrically connected to the pressure sensor. When the pressure inside the water bottle 11 is sensed to reach the set stop pressure value, the drive motor is controlled to press the locking rod 42, causing the locking member 43 to disengage from the locking position 41.

[0050] In this design, to optimize the structural configuration and reduce the number of parts, the pressure feedback shutdown structure is preferably a valve stem 28 located at the end of the first valve body 23. The valve stem 28 is inserted into the vent hole 25, and the length of the valve stem 28 is greater than the length of the vent hole 25. When the air pressure inside the water bottle 11 reaches a specified value, the valve stem 28 is completely pushed out of the first mounting base 20 by the first valve body 23 and presses the locking rod 42, thereby preventing the locking member 43 from engaging with the locking position 41. Furthermore, the second outlet hole 32 is preferably located on the outer surface of the valve stem 28.

[0051] To further optimize the system, and to prevent the locking link 42 from engaging with the air intake link 40 when the water bottle 11 is not installed on the first mounting base 20, thus avoiding the continuous opening of the gas cylinder 12 when the water bottle 11 is not installed, preferably, the locking link 42 is provided with a limiting position 45, the water bottle 11 has a driving part on the outside of its opening, the first mounting base 20 is provided with a push rod 51, and the main unit 10 is internally pivotally connected to an intermediate swing rod 53 located between the push rod 51 and the limiting position 45. The intermediate swing rod 53 swings between the limiting state and the limiting state. When the state is released, in the restricted state, the end of the intermediate swing rod 53 is located on the movement path of the restricted position 45, thereby restricting the locking piece 43 from swinging toward the locking position 41. After the water bottle 11 is installed on the first mounting base 20, the driving unit can drive the top rod 51 to move and drive the intermediate swing rod 53 to swing to the released state. The main unit 10 is provided with a fourth spring 54 that abuts against the top rod 51 and / or the intermediate swing rod 53. The fourth spring 54 is used to drive the intermediate swing rod 53 to reset to the restricted state. With this structure, when the water bottle 11 is not installed on the first mounting base 20, the fourth spring 54 drives the intermediate swing rod 53 to return to the restricted state. At this time, the end of the intermediate swing rod 53 is located on the movement path of the restricted position 45, so that the locking link 42 cannot swing effectively. Even if the air intake link 40 is pressed, the locking piece 43 cannot move to the specified position under the action of the third return spring 44. Therefore, the locking piece 43 cannot engage the locking position 41, so the air intake link 40 is not restricted. Therefore, as soon as the user releases the hand, the air intake link 40 automatically returns to its original position, thus avoiding the phenomenon of continuous opening of the gas cylinder 12 when the water bottle 11 is not installed. When the water bottle 11 is installed on the first mounting base 20, the top rod 51 is driven to move. The movement of the top rod 51 drives the intermediate swing rod 53 to swing, so that the intermediate swing rod 53 swings to the released state, thereby removing the end of the intermediate swing rod 53 from the movement path of the restricted position 45. At this time, the locking link 42 can swing normally. In this design, the locking link 42 is preferably pivotally connected to the main unit 10 at its middle part, the latch 43 is disposed at the top of the locking link 42, and the limiting position 45 is disposed at the bottom of the locking link 42.

[0052] In this embodiment, the locking element 43 is preferably a hook, and the locking position 41 is a locking hole provided on the intake manifold. The edge of the hook is provided with a guide slope that mates with the surface of the intake manifold. The locking hole is located above the hook. When the intake manifold swings up and down, the locking hole moves downward when pressed down, and the edge of the intake manifold pushes the hook, causing the hook to engage in the locking hole. In other embodiments, the locking element 43 and the locking position 41 can also be two hooks that abut each other, or other embodiments.

[0053] Further optimization is preferred, with an installation port 201 at the bottom of the first mounting base 20, and a sliding groove 50 on the inner wall of the installation port 201. The push rod 51 includes a slider 52 disposed in the sliding groove 50 and used to slide along the sliding groove 50. An inlet 202 communicating with the sliding groove 50 is provided at the bottom of the installation port 201. The driving unit can enter the sliding groove 50 through the inlet 202 and drive the slider 52 to slide. When the water bottle 11 is installed on the first mounting base 20, the driving unit passes through the inlet 202 and enters the sliding groove 50. Then, the water bottle 11 is rotated, causing the driving unit to rotate in the sliding groove 50, thereby pushing the slider 52 to move in the sliding groove 50, thereby driving the push rod 51 to move.

[0054] Further optimization is preferred, with a second mounting base and a gas cylinder cover 60 at the bottom of the main unit 10. The gas cylinder 12 is detachably mounted on the second mounting base. A locking pin 63 is provided on the outer periphery of the second mounting base. A rotating groove 61 that rotatably engages with the locking pin 63 is provided on the inner side of the gas cylinder cover 60. A locking groove 62 is provided on the top of the gas cylinder cover 60. A locking switch 70 is provided inside the main unit 10. The locking switch 70 includes a drive key 72 and a locking pin 71. An operating hole is provided on the bottom surface of the main unit 10. The drive key 72 is located in the operating hole. The locking pin 71 is located on the second mounting base. A fifth spring 73 is provided on the main unit 10, which is connected to the locking pin 71 and is used to drive the locking pin 71 to move toward the locking groove 62. When the gas cylinder cover 60 is rotated and locked onto the second mounting base, the locking pin 71 is inserted into the locking groove 62. This structure allows a gas cylinder cover 60 to be installed around the gas cylinder 12. The gas cylinder cover 60 is rotatably connected to the second mounting base via a rotating slot 61 and a locking pin 63. When the gas cylinder cover 60 is in place, the locking pin 71 automatically engages with the locking groove 62 at the top of the gas cylinder cover 60 under the action of the fifth spring 73, thereby restricting the rotation of the gas cylinder cover 60. When it is necessary to remove the gas cylinder cover 60, first press the drive key 72 to disengage the locking pin 71 from the locking groove 62, and then the gas cylinder cover 60 can be rotated and removed.

[0055] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A bubbler with a low-pressure holding function, characterized by comprising: include: The host (10) is provided with a gas cylinder (12), a water bottle (11) and a gas line for connecting the gas cylinder (12) and the water bottle (11). A gas valve is provided on the gas line. A switch for controlling the gas valve is provided on the host (10). The first mounting base (20) is provided, and the water bottle (11) is detachably mounted on the first mounting base (20). The first mounting base (20) is provided with a first valve chamber (21). The first valve chamber (21) is connected to the water bottle (11) through a first air guide channel (22). The surface of the first mounting base (20) is provided with an exhaust hole (25) connected to the first valve chamber (21). The first mounting base (20) is also provided with a pressure feedback shutdown structure and an active exhaust valve connected to the water bottle (11). The first valve body (23) is disposed in the first valve cavity (21). The front end of the first valve body (23) has a sealing valve head (24) for sealing the end of the first air guide channel (22). The first valve body (23) is connected to a first return spring (26) that drives the first valve body (23) to move toward the end of the first air guide channel (22). The ratio of the effective air pressure bearing area of ​​the first valve body (23) in the first valve cavity (21) to the cross-sectional area of ​​the end of the first air guide channel (22) is the pressure ratio of the shutdown air pressure and the low pressure holding air pressure.

2. A sparkling water machine with low-pressure maintenance function as described in claim 1, characterized in that: The first valve body (23) is provided with a sealing element (27) that cooperates with the inner wall of the first valve cavity (21). The first valve body (23) is provided with a second valve cavity (30). The first valve body (23) is provided with a second inlet hole (31) and a second outlet hole (32) that communicate with the second valve cavity (30). The second outlet hole (32) communicates with the exhaust hole (25). The second inlet hole (31) communicates with a portion of the first valve cavity (21) located between the sealing element (27) and the end of the first air guide channel (22). The second valve body (34) is disposed in the second valve chamber (30). The second valve chamber (30) is provided with a second return spring (35) connected to the second valve body (34) and driving the second valve body (34) to seal the second inlet hole (31). The sealing air pressure of the second valve body (34) on the second inlet hole (31) is less than the low pressure holding air pressure.

3. A sparkling water machine with low-pressure holding function as described in claim 2, characterized in that: The second valve chamber (30) has a second valve groove (33) at its front end. The second inlet (31) is connected to the second valve groove (33). The cross-sectional area of ​​the end of the second valve groove (33) is smaller than the cross-sectional area of ​​the second valve chamber (30). The second outlet (32) is located at the rear end of the second valve groove (33). An air guide gap is formed between the second valve body (34) and the inner wall of the second valve chamber (30).

4. A sparkling water machine with low-pressure holding function as described in claim 2, characterized in that: The sealing element (27) is disposed at the end of the first valve body (23), and a pressure-bearing sealing surface is disposed in the first valve cavity (21) located on the outer periphery of the exhaust hole (25) and used to abut against the sealing element (27).

5. A sparkling water machine with low-pressure holding function as described in claim 2 or 3, characterized in that: The switch includes an intake connecting rod (40) pivotally connected to the main unit (10) and a locking connecting rod (42) pivotally connected to the main unit (10). The intake connecting rod (40) opens and closes the air valve by swinging. An elastic reset device is connected to the intake connecting rod (40). A snap-fit ​​position (41) is provided on the intake connecting rod (40). One end of the locking connecting rod (42) is provided with a snap-fit ​​piece (43) that is movably snapped into the snap-fit ​​position (41). A third reset spring (44) is provided on the locking connecting rod (42). When the intake connecting rod (40) is in the air valve open state, the third reset spring (44) is used to drive the snap-fit ​​piece (43) to swing toward the snap-fit ​​position (41). The pressure feedback shutdown structure cooperates with the locking connecting rod (42) to drive it to overcome the movement of the third reset spring (44).

6. A sparkling water machine with low-pressure holding function as described in claim 5, characterized in that: The pressure feedback shutdown structure is a valve stem (28) located at the end of the first valve body (23). The valve stem (28) is inserted into the exhaust hole (25). The length of the valve stem (28) is greater than the length of the exhaust hole (25). When the air pressure inside the water bottle (11) reaches the specified value, the valve stem (28) is completely pushed out of the first mounting base (20) by the first valve body (23) and presses the locking link (42).

7. A sparkling water machine with low-pressure holding function as described in claim 6, characterized in that: The second outlet (32) is provided on the outer surface of the valve stem (28).

8. A sparkling water machine with low-pressure holding function as described in claim 5, characterized in that: A limiting position (45) is provided on the locking link (42), a driving part is provided on the outside of the bottle mouth of the water bottle (11), a top rod (51) is provided on the first mounting base (20), and an intermediate swing rod (53) located between the top rod (51) and the limiting position (45) is pivotally connected inside the main unit (10). The intermediate swing rod (53) switches between a limiting state and a releasing state by swinging. In the limiting state, the end of the intermediate swing rod (53) is located at the limiting position (45). The movement path further restricts the movement of the card (43) toward the locking position (41). After the water bottle (11) is installed on the first mounting base (20), the driving unit can drive the top rod (51) to move and drive the intermediate swing rod (53) to swing to the released state. The main unit (10) is provided with a fourth spring (54) that abuts against the top rod (51) and / or the intermediate swing rod (53). The fourth spring (54) is used to drive the intermediate swing rod (53) to reset to the restricted state.

9. A sparkling water machine with low-pressure holding function as described in claim 8, characterized in that: The first mounting base (20) has a mounting port (201) at its bottom. The inner wall of the mounting port (201) has a sliding groove (50). The top rod (51) includes a slider (52) disposed in the sliding groove (50) and used to slide along the sliding groove (50). The bottom of the mounting port (201) has an inlet (202) that communicates with the sliding groove (50). The driving unit can enter the sliding groove (50) through the inlet (202) and drive the slider (52) to slide.

10. A sparkling water machine with low-pressure holding function as described in claim 1, characterized in that: The main unit (10) is provided with a second mounting base and a gas cylinder cover (60) at its bottom. The gas cylinder (12) is detachably mounted on the second mounting base. A latch (63) is provided on the outer periphery of the second mounting base. A rotating groove (61) is provided on the inner side of the gas cylinder cover (60) to rotate with the latch (63). A locking groove (62) is provided on the top of the gas cylinder cover (60). A locking switch (70) is provided inside the main unit (10). The locking switch (70) includes... The main unit (10) has an operation hole on its bottom surface. The drive key (72) is located in the operation hole. The lock pin (71) is located on the second mounting base. The main unit (10) is provided with a fifth spring (73) that is connected to the lock pin (71) and is used to drive the lock pin (71) to move toward the lock groove (62). When the gas cylinder cover (60) is rotated and locked onto the second mounting base, the lock pin (71) is inserted into the lock groove (62).

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