Valve body assembly and coffee machine

Abstract

The valve body assembly comprises a valve body, the valve body is provided with a valve cavity, a first exhaust port, a second exhaust port and a communication port, and the communication port, the first exhaust port and the second exhaust port are all communicated with the valve cavity; the first blocking piece is arranged in the valve cavity and can move close to or away from the first exhaust port, and the first blocking piece is used for blocking the first exhaust port after the first blocking piece moves close to the first exhaust port after gas is introduced into the communication port; and the second blocking piece is arranged in the valve cavity and can move close to or away from the second exhaust port, and the second blocking piece is used for moving away from the second exhaust port to open the second exhaust port after the first blocking piece blocks the first exhaust port and gas is guided into the communication port. According to the valve body assembly and the coffee machine, the first blocking piece and the second blocking piece on the valve body can be matched with the first exhaust port and the second exhaust port according to different air pressure states formed when the communication port is guided into the valve cavity to conduct blocking, exhaust and pressure relief.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body technical field especially, relate to a valve body subassembly and coffee machine. BACKGROUND

[0002] Generally in the device such as steam boiler, cooking device, hot water device and coffee machine that produce steam after heating, all will be equipped with an exhaust valve structure, is used for the inside cold air discharge at the beginning of heating action, then again seals to make the boiler form sealed space. In addition, in order to prevent the device inside due to pressure is too high and needs to be equipped with a pressure relief valve, can release the pressure in the boiler, to make inside form stable working pressure, can also prevent the boiler explosion, play the protection function.

[0003] However, the existing exhaust valve and pressure relief valve are set separately, are installed separately when installing, and are not convenient to assemble, and the cost is also higher. INVENTION CONTENTS

[0004] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a valve body assembly and coffee machine, the first plugging piece and the second plugging piece on the valve body can be matched with the first exhaust port and the second exhaust port for plugging and exhaust pressure relief according to the different air pressure states formed by the communication port leading into the valve cavity.

[0005] The utility model discloses a valve body assembly and coffee machine, which can overcome at least one of the defects of the prior art.

[0006] A valve body assembly, comprising,

[0007] A valve body is provided with a valve cavity, a first exhaust port, a second exhaust port and a communication port, the communication port, the first exhaust port and the second exhaust port all communicate with the valve cavity;

[0008] A first plugging piece is arranged on the valve body and can move close to or away from the first exhaust port, and the first plugging piece is used to move close to the first exhaust port after the communication port leads in gas, and plug the first exhaust port;

[0009] A second plugging piece is arranged on the valve body and can move close to or away from the second exhaust port, and the second plugging piece is used to move away from the second exhaust port to open the second exhaust port after the communication port leads in gas and the first plugging piece plugs the first exhaust port.

[0010] Further, the first plugging piece includes a valve rod and a first sealing piece, and the first sealing piece is arranged at the first exhaust port; the valve rod is used to be pressed to move close to the first exhaust port and press the first sealing piece after the communication port leads in gas.

[0011] Further, the valve stem comprises a valve stem head and a valve stem segment, the valve stem segment is connected to the valve stem head; the valve stem head is used to move close to the first exhaust port when under pressure, so as to drive the valve stem segment to penetrate into the first exhaust port; the valve stem head is used to be pressed to the first sealing piece after the valve stem segment penetrates into the first exhaust port.

[0012] Further, the valve cavity is provided with a guide cavity segment in communication with the valve cavity; the first exhaust port is in communication with the guide cavity segment; the first sealing piece is arranged in the guide cavity segment.

[0013] Further, the first sealing piece further comprises a second sealing piece, the second sealing piece is arranged on the valve stem and abuts against the first sealing piece.

[0014] Further, the second sealing piece comprises a sealing block and an elastic piece, the elastic piece is used to provide an elastic stress for driving the sealing block to move close to the second exhaust port; the sealing block is used to be pressed away from the second exhaust port after the communication port introduces gas.

[0015] Further, the second sealing piece further comprises a sealing seat, the sealing seat is arranged on the valve body; one end of the elastic piece is connected to the sealing seat, and the other end of the elastic piece is connected to the sealing block.

[0016] Further, the valve body is provided with a guide-out channel, the second exhaust port is in communication with the guide-out channel; the second sealing piece is arranged in the guide-out channel.

[0017] Further, the second sealing piece further comprises a third sealing piece, the third sealing piece is connected to the sealing block and is used to be sealingly matched with the second exhaust port when the sealing block is sealed to the second exhaust port.

[0018] A coffee machine comprises a steam boiler and the valve body assembly, the communication port of the valve body assembly is in communication with the steam boiler.

[0019] In summary, the utility model has the following technical effects:

[0020] In the application, the first exhaust port and the second exhaust port are in communication with the valve cavity, the gas is introduced through the same communication port, the first sealing piece and the second sealing piece are switched to different states according to different gas pressure states after the gas is introduced, the exhaust and pressure relief states can be switched, only one valve body assembly needs to be arranged, multiple valve bodies do not need to be arranged separately, the installation structure is simplified, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1The first state structure schematic view of the valve body assembly of the utility model;

[0022] Figure 2 The second state structure schematic view of the valve body assembly of the utility model;

[0023] Figure 3 The third state structure schematic view of the valve body assembly of the utility model.

[0024] Wherein, the signification of the reference sign is as follows: 10, valve body; 11, valve cavity; 12, communication port; 13, first exhaust port; 14, second exhaust port; 15, leading channel; 16, leading cavity section; 21, valve rod head; 22, valve rod section; 23, first sealing member; 24, second sealing member; 31, plugging block; 32, third sealing member; 33, elastic member; 34, plugging seat. DETAILED DESCRIPTION

[0025] In order to better understand and implement, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0026] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0028] Example 1,

[0029] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model discloses a valve body assembly, including valve body 10, first plugging piece, second plugging piece, is equipped with valve cavity 11, first exhaust port 13, second exhaust port 14 and communication port 12 at valve body 10. The communication port 12, the first exhaust port 13 and the second exhaust port 14 are all communicated with the valve cavity 11, and the communication port 12 can be used to communicate with the steam generation structure.

[0030] Specifically, the first blocking member is arranged on the valve body 10, and the first blocking member can move towards or away from the first exhaust port 13. After the gas is introduced into the communication port 12, the first blocking member moves towards the first exhaust port 13 and blocks the first exhaust port 13. In addition, the second blocking member is also arranged on the valve body 10, and the second blocking member can also move towards or away from the second exhaust port 14. The second blocking member can move away from the second exhaust port 14 after the gas is introduced into the communication port 12 and the first blocking member blocks the first exhaust port 13.

[0031] On the basis of the above structure, the valve body assembly of the utility model can be used in steam generating devices, such as steam boilers of coffee machines, high-pressure cooking devices, hot water machines and the like. The embodiment takes the case where the valve body assembly is used in a steam boiler of a coffee machine as an example for description:

[0032] During assembly, the communication port 12 of the valve body 10 can be communicated with the exhaust pipeline of the steam boiler. In the initial state, the first blocking member is away from the first exhaust port 13, that is, the first exhaust port 13 is in an open state, and at the same time, the second blocking member is close to the second exhaust port 14, that is, the second exhaust port 14 is in a blocked state.

[0033] Referring to Figure 1 When the steam boiler does not start working, no steam is generated in the steam boiler, and the steam boiler is in a normal pressure state. At this time, the exhaust pipeline of the steam boiler can be communicated to the valve cavity 11 through the communication port 12 and communicated with the first exhaust port 13 through the valve cavity 11.

[0034] Referring to Figure 2 When the steam boiler normally works, during the temperature rise in the steam boiler, the excess gas in the steam boiler can enter the communication port 12 through the exhaust pipeline, and then enter the valve cavity 11 through the communication port 12. Since the second blocking member blocks the second exhaust port 14 and the first blocking member opens the first exhaust port 13, the excess gas introduced into the valve cavity 11 through the communication port 12 can be discharged through the first exhaust port 13.

[0035] During the gradual increase of the temperature in the steam boiler, the steam in the steam boiler will be more and more, and the air pressure in the steam boiler will be greater and greater. When the air pressure in the steam boiler reaches a certain degree, the first blocking member can move towards the first exhaust port 13, and the first exhaust port 13 is kept blocked at this time, and the second exhaust port 14 is also kept blocked. In this way, the pressure in the steam boiler can be kept in a stable pressure state, so that the heating speed in the steam boiler is fast, the steam pressure is large, and when the coffee beverage is milk frothed, the steam pressure is large and the milk frothing speed is fast, and the effect is good.

[0036] Of course, referring to Figure 3When the pressure in the steam boiler is abnormal, if the pressure is not relieved in time, the steam boiler will easily explode and other safety hazards, at this time, the second sealing member can be opened to exhaust and relieve pressure. In this way, in the present application, the first exhaust port 13 and the second exhaust port 14 are both in communication with the valve cavity 11, and the gas is introduced through the same communication port 12. According to the different gas pressure states after the gas is introduced, the first sealing member and the second sealing member are switched to different states, so that the exhaust and pressure relief states can be switched. Only one valve body assembly needs to be set, multiple valve bodies 10 do not need to be set separately, the installation structure is simplified, and the cost is reduced.

[0037] Further, the first sealing member includes a valve rod and a sealing member. The first sealing member 23 is arranged at the first exhaust port 13, and the valve rod is used to move close to the first exhaust port 13 under pressure after the gas is introduced through the communication port 12, and press the first sealing member 23.

[0038] Specifically, the first exhaust port 13 and the second exhaust port 14 are arranged at the top end and the bottom end of the valve cavity 11 respectively, and the valve rod is arranged in the valve cavity 11. The valve rod can maintain a downward trend under the action of its own gravity, so that the first exhaust port 13 is in an open state. In this way, when the steam boiler is just starting to work, the excess gas can enter the valve cavity 11 through the communication port 12 and be guided to the first exhaust port 13 for discharge. When the steam in the steam boiler increases, the steam pressure in the steam boiler increases, so that the pressure in the valve cavity 11 increases, pushing the valve rod upward. The valve rod moves upward under the action of the gas pressure, blocks the first exhaust port 13, and presses the first sealing member 23, so that the first exhaust port 13 remains in a sealed state. In this way, the steam boiler can work stably under stable pressure.

[0039] The valve rod includes a valve rod head 21 and a valve rod segment 22, and the valve rod segment 22 is connected to the valve rod head 21. The valve rod head 21 can move close to the first exhaust port 13 under pressure to drive the valve rod segment 22 to penetrate into the first exhaust port 13. The valve rod head 21 is used to press the first sealing member 23 after the valve rod segment 22 penetrates into the first exhaust port 13.

[0040] On the basis of the structure, when the gas pressure in the valve cavity 11 increases, the valve rod head 21 can be pushed by the gas pressure to drive the valve rod segment 22 to move upward and penetrate into the first exhaust port 13. At the same time, the valve rod head 21 presses the first sealing member 23 tightly to make the first sealing member 23 seal and deform, and block the first exhaust port 13. In this way, the valve rod segment 22 extends into the first exhaust port 13 to block it by its own structure, and the valve rod segment 22 presses the first sealing member 23 tightly to seal and block the entrance of the first exhaust port 13 by the deformation of the first sealing member 23. In this way, the sealing effect is better.

[0041] It should be noted that the outer diameter of the valve stem head 21 can be larger than the outer diameter of the valve stem section 22, so that the valve stem head 21 is pressed, the pressure receiving surface of the valve stem is larger, and the valve stem is more easily pushed to move when the air pressure increases.

[0042] Further, the valve cavity 11 is provided with a guide cavity section 16, the guide cavity section 16 is in communication with the valve cavity 11; the first exhaust port 13 is in communication with the guide cavity section 16; the first sealing member is arranged in the guide cavity section 16, so that the valve stem is arranged in the guide cavity section 16, the movement stroke of the valve stem is limited in the guide cavity section 16, in the initial state, the valve stem is kept away from the first exhaust port 13 under the action of its own gravity, and the guide cavity section 16 can limit the lowest position of the valve stem to prevent the valve stem from directly falling and guide the valve stem to move upward under pressure in the later period.

[0043] When the steam boiler just starts to exhaust, the excess gas in the steam boiler can enter the valve cavity 11 through the communication port 12, enter the guide cavity section 16 through the valve cavity 11, and then be guided to the first exhaust port 13 for exhaust.

[0044] When the air pressure in the steam boiler gradually increases, the air pressure in the valve cavity 11 increases accordingly, the pressure of the entering gas is large, which will push the valve stem upward to drive the valve stem to seal upward. In the embodiment, the gas in the valve cavity 11 enters the guide cavity section 16, the space of the guide cavity section 16 is further reduced compared with the valve cavity 11, so the air pressure in the guide cavity section 16 is larger, which can push the valve stem upward faster, so that the valve stem can be quickly sealed. Further, in order to further improve the sealing performance of the first exhaust port 13 after the first sealing member seals, the above-mentioned first sealing member further comprises a second sealing member 24, which is arranged on the valve stem, so that after the valve stem is pushed upward, the second sealing member 24 on the valve stem can abut against the first sealing member 23 of the first exhaust port 13 and deform at the same time, so that the sealing surface formed is larger and the sealing effect is better.

[0045] It should be noted that in addition to keeping the first exhaust port 13 open downward under the action of its own gravity, the valve cavity 11 can also be provided with an elastic structure, which can drive the first sealing member to keep away from the first exhaust port 13, when the steam pressure is large enough, the elastic stress of the elastic structure can be overcome to drive the first sealing member to move upward to seal. Of course, the first sealing member can also be controlled to open or seal in different states by an electromagnetic structure or the like, which can be rotated according to actual needs. Further, the second sealing member of the embodiment comprises a sealing block 31 and an elastic member 33, the elastic member 33 can provide an elastic stress to drive the sealing block 31 to move close to the second exhaust port 14, and the sealing block 31 can be pressed and away from the second exhaust port 14 after the gas is introduced through the communication port 12.

[0046] On the basis of the above structure, in the initial state, the first blocking member can keep away from the first exhaust port 13, while the second blocking member can keep close to the second exhaust port 14 under the elastic stress provided by the elastic member 33, that is, the second blocking member blocks the second exhaust port 14. When the steam boiler just starts to work, the excess gas generated can be discharged through the first exhaust port 13.

[0047] When the steam boiler works normally, the gas pressure in the steam boiler will increase during the steam generation process, and thus the gas pressure in the valve cavity 11 communicated with the communication port 12 will also gradually increase. At this time, the first blocking member will move upward and close to the first exhaust port 13 under the action of the gas pressure, so that the first exhaust port 13 is in a blocked state. The steam boiler can work under the condition that the first exhaust port 13 and the second exhaust port 14 are in a blocked state, so that the gas pressure in the steam boiler works under a certain pressure condition.

[0048] At this time, the pressure value in the valve cavity 11 can keep the first blocking member to push upward and block the position of the first exhaust port 13, and the pressure provided by the gas pressure is insufficient to overcome the elastic stress provided by the elastic member 33, so that the blocking block 31 of the second blocking member can be blocked under the action of the elastic stress when the steam boiler works normally.

[0049] When the pressure value of the steam boiler is abnormal and high pressure occurs, the valve cavity 11 communicated with the communication port 12 will also be in an abnormally high pressure state. At this time, the pressure provided by the excessive pressure can overcome the elastic stress of the elastic member 33, and drive the blocking block 31 away from the second exhaust port 14. At this time, the second exhaust port 14 can be opened to realize pressure relief and exhaust of the valve cavity 11, so as to prevent safety hazards caused by abnormal pressure in the steam boiler.

[0050] Further, the above-mentioned second blocking member further comprises a blocking seat 34, which is arranged on the valve body 10. One end of the elastic member 33 is connected to the blocking seat 34, and the other end of the elastic member 33 is connected to the blocking block 31. In this way, the blocking block 31 and the elastic member 33 can be assembled based on the blocking seat 34. During installation, the blocking seat 34 is connected to the valve body 10, and the elastic member 33 is connected to the blocking seat 34, so as to realize the assembly of the second blocking member.

[0051] Further, the valve body 10 is provided with a leading channel 15, the second exhaust port 14 is communicated with the leading channel 15, and the second blocking member is arranged in the leading channel 15. On this basis, the blocking seat 34 can be arranged at the bottom end of the leading channel 15, the elastic member 33 is arranged above the blocking seat 34 and connected with the blocking seat 34, and the blocking block 31 is connected at the top end of the elastic member 33, so that the second exhaust port 14 can be communicated to the top end of the leading channel 15. When pressure relief is performed, the high-pressure gas in the valve cavity 11 can enter the leading channel 15 downward through the second exhaust port 14, push the blocking block 31 downward, drive the blocking block 31 to move away from the second exhaust port 14, and the high-pressure gas can be concentrated and discharged through the leading channel 15, reducing the scalding caused by the dispersion of high-pressure gas.

[0052] Further, the second blocking member further comprises a third sealing member 32 connected to the blocking block 31. When the blocking block 31 blocks the second exhaust port 14, the third sealing member 32 is in sealing cooperation with the second exhaust port 14. That is, the blocking block 31 is sealed to the second exhaust port 14 through the third sealing member 32 to maintain the sealing state. Of course, the blocking block 31 can be made of a sealing rubber or a sealing silica gel block having a sealing function, and sealing can be achieved without additional sealing members.

[0053] The first sealing member 23, the second sealing member 24 and the third sealing member 32 can be implemented by using a sealing rubber block or a sealing rubber ring in the prior art.

[0054] It should be further noted that the second blocking member can also be controlled by an electromagnetic iron or other electrically controlled structure to open or block in different states.

[0055] In this embodiment, the first exhaust port is above and the second exhaust port is below. In other cases, the second exhaust port can be arranged above and the first exhaust port can be arranged below. In this way, the first blocking member can be in an open state of the first exhaust port under the action of the elastic structure, and the second exhaust port can be in a closed state of the second exhaust port under the action of the elastic structure. The second blocking member is above the second exhaust port, so that the second blocking member can be pushed downward to open the second exhaust port for pressure relief when the pressure in the valve cavity is high. On this basis, the first blocking member and the second blocking member need to be provided with elastic structures to maintain the corresponding initial state, but the elastic coefficients of the elastic structures of the first blocking member and the second blocking member are different, so that the state can be switched when the valve cavity is in different pressure values.

[0056] Embodiment 2,

[0057] A coffee machine comprises a steam boiler and the valve body assembly of embodiment 1, the communication port 12 of the valve body assembly is communicated with the steam boiler. Specifically, in the assembled state, the communication port 12 of the valve body 10 can be communicated with the exhaust pipeline of the steam boiler, and in the initial state, the first sealing member is away from the first exhaust port 13, that is, the first exhaust port 13 is in an open state, while the second sealing member is close to the second exhaust port 14, that is, the second exhaust port 14 is in a sealing state.

[0058] When the steam boiler is not working, there is no steam in the steam boiler, and it is in a normal pressure state, at this time, the exhaust pipeline of the steam boiler can be communicated to the valve cavity 11 through the communication port 12, and communicated to the first exhaust port 13 through the valve cavity 11.

[0059] When the steam boiler is working normally, during the temperature rise in the steam boiler, the excess gas in the steam boiler can enter the communication port 12 through the exhaust pipeline, and then enter the valve cavity 11 through the communication port 12. Since the second sealing member seals the second exhaust port 14, the first sealing member opens the first exhaust port 13, at this time, the excess gas introduced into the valve cavity 11 through the communication port 12 can be discharged through the first exhaust port 13.

[0060] And during the gradual increase of the temperature in the steam boiler, the steam in the steam boiler will be more and more, and the pressure in the steam boiler will be higher and higher. When the pressure in the steam boiler reaches a certain degree, the first sealing member can move close to the first exhaust port 13, and the first exhaust port 13 is kept sealed at this time, and the second exhaust port 14 is also kept sealed. In this way, the pressure in the steam boiler can be kept at a stable pressure state, so that the heating speed in the steam boiler is fast, the steam pressure is large, and when the coffee beverage is steamed, the steam pressure is large, the steaming speed is fast, and the effect is good.

[0061] Of course, when the pressure in the steam boiler is abnormal, the internal pressure is too large, and if it is not relieved in time, the steam boiler will easily have safety hazards such as explosion, at this time, the second sealing member can be opened to discharge and relieve pressure. In this way, in the present application, the first exhaust port 13 and the second exhaust port 14 of the valve body 10 are communicated with the valve cavity 11, the gas is introduced through the same communication port 12, the first sealing member and the second sealing member are controlled to switch different states according to different pressure states of the introduced gas, so that the exhaust and pressure relief states can be switched, only one valve body assembly needs to be set, without the need to set multiple valve bodies 10, the installation structure is simplified, and the cost is reduced.

[0062] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A valve body assembly, characterized in that, include, The valve body is provided with a valve cavity, a first exhaust port, a second exhaust port, and a connecting port, wherein the connecting port, the first exhaust port, and the second exhaust port are all connected to the valve cavity; The first sealing element is disposed on the valve body and can move closer to or away from the first exhaust port. The first sealing element is used to block the first exhaust port after gas is introduced into the communication port and after moving closer to the first exhaust port. The second sealing element is disposed on the valve body and can move closer to or further away from the second exhaust port. The second sealing element is used to move away from the second exhaust port to open the second exhaust port after the first sealing element blocks the first exhaust port and gas is introduced into the connecting port.

2. The valve body assembly according to claim 1, characterized in that, The first sealing element includes a valve stem and a first sealing element, the first sealing element being disposed at the first exhaust port; the valve stem is used to be pressurized after gas is introduced into the communication port, so as to move close to the first exhaust port and press against the first sealing element.

3. The valve body assembly according to claim 2, characterized in that, The valve stem includes a valve stem head and a valve stem section, the valve stem section being connected to the valve stem head; the valve stem head is used to move closer to the first exhaust port when under pressure, so as to drive the valve stem section to penetrate the first exhaust port; the valve stem head is used to press against the first seal after the valve stem section penetrates the first exhaust port.

4. The valve body assembly according to claim 2, characterized in that, The valve cavity is provided with a guide cavity section that communicates with the valve cavity; the first exhaust port communicates with the guide cavity section; the first sealing member is provided in the guide cavity section.

5. The valve body assembly according to claim 2, characterized in that, The first sealing element further includes a second sealing element, which is disposed on the valve stem and is used to abut against the first sealing element.

6. The valve body assembly according to any one of claims 1-5, characterized in that, The second sealing element includes a sealing block and an elastic element, the elastic element being used to provide an elastic stress that drives the sealing block to move closer to the second exhaust port; the sealing block is used to be pressurized after gas is introduced into the communication port and to move away from the second exhaust port.

7. The valve body assembly according to claim 6, characterized in that, The second sealing element further includes a sealing seat, which is disposed on the valve body; one end of the elastic element is connected to the sealing seat, and the other end of the elastic element is connected to the sealing block.

8. The valve body assembly according to claim 6, characterized in that, The valve body is provided with an outlet channel, and the second exhaust port is connected to the outlet channel; the second sealing element is provided in the outlet channel.

9. The valve body assembly according to claim 6, characterized in that, The second sealing element further includes a third sealing element, which is connected to the sealing block and is used to seal with the second exhaust port when the sealing block seals the second exhaust port.

10. A coffee machine, characterized in that, It includes a steam boiler and a valve body assembly according to any one of claims 1-9, wherein the communication port of the valve body assembly is connected to the steam boiler.

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