WO2015078096A1 - 两通泄压阀 - Google Patents

两通泄压阀 Download PDF

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Publication number
WO2015078096A1
WO2015078096A1 PCT/CN2014/001060 CN2014001060W WO2015078096A1 WO 2015078096 A1 WO2015078096 A1 WO 2015078096A1 CN 2014001060 W CN2014001060 W CN 2014001060W WO 2015078096 A1 WO2015078096 A1 WO 2015078096A1
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WO
WIPO (PCT)
Prior art keywords
valve
pressure relief
valve body
chamber
wall
Prior art date
Application number
PCT/CN2014/001060
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English (en)
French (fr)
Inventor
汪天平
Original Assignee
宁波西文电器有限公司
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Publication date
Application filed by 宁波西文电器有限公司 filed Critical 宁波西文电器有限公司
Priority to EP14866284.4A priority Critical patent/EP3076057B1/en
Publication of WO2015078096A1 publication Critical patent/WO2015078096A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0473—Multiple-way safety valves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/46—Dispensing spouts, pumps, drain valves or like liquid transporting devices
    • A47J31/461—Valves, e.g. drain valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves

Definitions

  • the present invention relates to a pressure relief element, and more particularly to a two-way pressure relief valve that is particularly suitable for use in a water supply circuit of a coffee machine.
  • a coffee machine or similar beverage brewing device which, in brewing, places the coffee capsule in a brewing chamber, the water is heated by a water pump to the heating device, and the hot water is extracted through the coffee capsule located in the brewing chamber to extract the powder in the coffee capsule. After brewing, the extracted beverage flows out of the water outlet of the brewing chamber for human use.
  • the coffee machine is extracted by high temperature and high pressure. This causes the coffee machine to still have a certain amount of high-temperature water inside the coffee machine after the coffee is brewed. If the handle is directly opened at this time, it will be very dangerous, and it is easy to have hot water splashing and causing burns to the user.
  • some of the existing coffee machines have hydraulic brewing systems. The system is hydraulically pushed to seal and lock the brewing chamber. After the coffee is brewed, the interior is still in a high temperature and high pressure locked state. At this point, the machine cannot be turned on.
  • the existing manufacturers mostly use the solenoid valve to perform pressure relief on the brewed coffee machine.
  • the electromagnetic valve inside the machine is controlled by the program to open.
  • the high temperature and high pressure hot water inside the air solves the above problem of hot water splashing and the machine can not be opened, but the solenoid valve is a relatively sophisticated electronic device, and requires program control, so the cost is high and it is easy to be damaged.
  • the technical problem to be solved by the present invention is to provide a two-way pressure relief valve which is simple and reasonable in structure and completely realizes pressure relief by using a mechanical principle, and has the advantages of low cost and low damage.
  • the two-way pressure relief valve comprises a valve body having a valve cavity therein and a valve core assembly disposed in the valve cavity;
  • the top of the valve body is provided with a water inlet passage communicating with the valve chamber
  • the bottom of the valve body is provided with a pressure relief passage communicating with the valve chamber
  • a water outlet passage communicating with the valve chamber is provided at a side portion of the valve body
  • valve core assembly comprises a valve body and a seal made of a flexible material
  • the valve body has a pressure chamber with an opening upward, and the valve body can slide down in the valve chamber relative to the valve body, and the downward movement of the valve body can sealingly cooperate with the inlet end of the pressure relief passage to release the pressure relief passage Blocking, a reset device is disposed between the valve body and the valve body to keep the valve body body moving upward and leaving the pressure receiving passage inlet end, and the circumference of the valve body a side hole connecting the pressure chamber and the valve chamber is provided on the wall;
  • the sealing member is disposed between the valve body and the peripheral wall of the valve chamber, and the upper outer circumference of the sealing member is in contact with the peripheral wall of the valve chamber to form a seal, and the lower portion of the sealing member blocks the side hole;
  • the resetting device may be a spring or an elastic colloid, and two ends of the spring or the elastic colloid are respectively supported between the outer wall of the valve core and the inner wall of the valve body.
  • the valve body is composed of a valve seat and a valve cover;
  • the valve seat has a receiving cavity with an opening facing upward, the valve cover is inserted in an upper part of the accommodating cavity, and the outer periphery of the bottom of the bonnet is sealed with the inner wall of the upper part of the valve seat.
  • the inner wall of the valve seat located under the valve cover forms a peripheral wall of the valve cavity;
  • the sealing member is located below the valve cover and between the valve body and the valve seat; the water inlet channel is disposed at the valve In the cover, the pressure relief passage and the outlet passage are disposed on the valve seat.
  • the valve body is composed of a valve seat and a valve cover;
  • the valve seat has an accommodating cavity with an opening facing upward, the valve cover is disposed at an upper portion of the accommodating cavity, and the bonnet has an extension extending into a middle portion of the accommodating cavity
  • the extension portion is sealingly fitted with the inner wall of the upper portion of the valve seat, and the inner side wall of the extension portion and the inner wall of the lower portion of the valve seat form a peripheral wall of the valve chamber;
  • the sealing member is disposed on the valve body and the valve cover Between the extensions, the upper outer periphery of the seal abuts against the extension of the valve cover to form a seal;
  • the water inlet passage is disposed on the valve cover, and the pressure relief passage and the water outlet passage are disposed on the valve seat.
  • the above-mentioned sealing member can follow the valve body to move up and down with respect to the valve body, or can not move relative to the valve body, and only the valve body moves relative to the valve body.
  • the middle portion of the sealing member is positioned and connected with the valve body, and can slide down with the valve body together with the valve body.
  • annular groove is formed in a middle portion of the outer circumference of the valve body, and a central portion of the inner peripheral wall of the sealing member has a radially convex convex rib, and the convex rib is embedded in the insertion groove.
  • a further option of the embodiment of the present invention is also the case that the sealing member does not move relative to the valve body: the sealing member is disposed between the valve body and the valve body and is relatively fixed to the valve body, and the outer periphery of the upper portion of the sealing member and the valve body The inner wall contacts to form a seal, and the lower portion of the seal has an annular wall extending downward;
  • annular wall of the seal surrounds the spool body such that the annular wall of the seal blocks the side aperture.
  • the valve body is composed of a valve seat and a valve cover;
  • the valve seat has an opening cavity with an opening facing upward, and the valve cover is inserted in an upper portion of the accommodating cavity: the water inlet channel is arranged On the bonnet, the pressure relief passage and the outlet passage are disposed on the valve seat.
  • the inner wall of the valve seat has an inner shoulder, and the upper portion of the seal is pressed between the bottom of the valve cover and the inner shoulder, so that the seal is opposite to the valve body fixed.
  • the outer side of the valve cover has a side convex insertion portion, and the upper side wall of the accommodating cavity of the valve seat has a slot for inserting the insertion portion.
  • the bottom of the valve body is provided with a sealing block made of a flexible material, and the sealing block can be sealingly fitted with the end surface at the inlet of the pressure relief passage.
  • the bottom surface of the valve chamber has an upwardly convex boss
  • the outer circumference of the valve body has an annular shoulder
  • the spring is sleeved on the boss, and the lower end of the spring is in contact with the bottom surface of the valve cavity, the spring The upper end is in contact with the annular shoulder
  • the pressure relief passage extends upward through the boss
  • the end surface at the inlet of the pressure relief passage is the top surface of the boss.
  • the top surface of the boss has a plurality of pressure relief grooves communicating with the valve chamber and the pressure relief passage, and the sealing block is embedded in the pressure relief groove when the sealing block is sealingly engaged with the top surface of the boss A complete seal is formed inside.
  • the sealing block is slightly separated from the top surface of the boss, the high pressure water will be initially pressed down through the pressure relief groove, so that the pressure relief valve can be relieved faster.
  • a gap between the lower inner circumference of the seal member and the outer periphery of the lower portion of the valve body has a gap through which air flows.
  • the gap is arranged to have an air venting function.
  • a sealing tube made of a flexible material is embedded in the periphery of the pressure relief channel, the top of the sealing tube is convexly convex on the top surface of the boss, and the bottom surface of the valve body is provided There is a pressure relief groove that connects the valve chamber and the pressure relief passage.
  • the top surface of the sealing tube has a convex curved surface.
  • the invention has the advantages that the water pump works when the machine starts to start the coffee normally, and after the high pressure water enters the valve cavity from the water inlet passage, first enters the pressure chamber of the valve body and pushes the valve core assembly against the spring. The elastic force moves down until the bottom of the valve body body blocks the pressure relief passage, and the high pressure water continues to enter the pressure chamber of the valve core body. Since the valve core body is blocked and cannot continue to move downward, the high pressure water will push the seal member laterally through the side hole. In the lower part, the high-pressure water is discharged from the water outlet passage through the side holes, and flows into the brewing system for brewing coffee;
  • the water pump stops working and stops the supply pressure.
  • the high pressure water no longer enters the valve chamber from the water inlet passage, the valve core assembly loses pressure, and moves upwards from the pressure relief passage under the action of the spring to release the pressure.
  • the passage is opened. Since the brewing system is still in a high pressure state at this time, excess water and pressure in the brewing system and the pipeline are discharged through the pressure relief passage to realize pressure relief, and the valve structure can effectively realize the pressure relief function of the electromagnetic valve, and Pressure relief for mechanical principles, involving fewer components and simpler, so the cost is much lower than the solenoid valve.
  • FIG. 1 is a schematic perspective view of a first embodiment of the present invention.
  • Figure 2 is a cross-sectional view showing a first embodiment of the present invention.
  • Figure 3 is a cross-sectional view showing a normal operation state of the first embodiment of the present invention.
  • Fig. 4 is a cross-sectional view showing a state in which the pressure is released in the first embodiment of the present invention.
  • Figure 5 is an exploded perspective view of the first embodiment of the present invention.
  • FIG. 6 is a schematic perspective structural view of a valve body according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic perspective view of a second embodiment of the present invention.
  • Figure 8 is a cross-sectional view showing a second embodiment of the present invention.
  • Fig. 9 is an enlarged view of a portion I in Fig. 8.
  • Figure 10 is a cross-sectional view showing the valve body and the seal member in the second embodiment of the present invention.
  • Figure 11 is a cross-sectional view showing the valve body in the second embodiment of the present invention.
  • Figure 12 is a cross-sectional view showing a second embodiment of the present invention in a normal operating state.
  • Figure 13 is a cross-sectional view showing a second embodiment of the present invention in a state of pressure relief.
  • Figure 14 is a cross-sectional view showing a third embodiment of the present invention.
  • FIG. 15 is a schematic perspective view of a fourth embodiment of the present invention.
  • Figure 16 is a cross-sectional view showing a fourth embodiment of the present invention.
  • Figure 17 is a cross-sectional view showing a fourth embodiment of the present invention in a normal operating state.
  • Figure 18 is a cross-sectional view showing a fourth embodiment of the present invention in a state of pressure relief.
  • Figure 19 is an exploded perspective view of a fourth embodiment of the present invention.
  • Figure 20 is a perspective cross-sectional view showing the valve body of the fourth embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the two-way pressure relief valve includes a valve body 1 having a valve chamber 2 therein and a valve core assembly disposed in the valve chamber 2:
  • the top of the valve body 1 is provided with a water inlet passage 121 communicating with the valve chamber 2, and the bottom of the valve body 1 is provided with a pressure relief passage 111 communicating with the valve chamber 2, and the side of the valve body 1 is provided with The water outlet passage 112 communicating with the valve chamber 2 is provided with a valve core assembly in the valve chamber 2.
  • the valve body 1 in this embodiment is composed of a valve seat 11 and a valve cover 12, and the valve seat 11 has an opening chamber 113 with an opening facing upward.
  • the valve cover 12 is inserted in the upper portion of the accommodating chamber 113, and the bottom of the valve cover 12
  • the periphery is sealingly fitted with the inner wall of the upper portion of the valve seat 11, and the inner wall of the valve seat 11 below the valve cover 12 forms the peripheral wall of the valve chamber 2;
  • the sealing cover 7 is sealed between the valve cover 12 and the inner wall of the valve seat 11, and the outer side of the valve cover 12 has a side convex insertion portion 122.
  • the upper side wall of the accommodating cavity 113 of the valve seat 11 has an insertion portion 122. Inserted slot 114;
  • the water inlet passage 121 is provided on the valve cover 12, and the pressure relief passage 111 and the water outlet passage 112 are provided on the valve seat 11.
  • the spool assembly includes a spool body 3 and a seal 5 made of a flexible material.
  • the valve body 3 has a pressure chamber 31 with an opening upward, and the pressure chamber 31 communicates with the water inlet passage 121, and the valve body 3 can The valve chamber 2 slides down relative to the valve seat 11, and the downward movement of the valve body 3 can sealingly cooperate with the inlet end of the pressure relief passage 111 to block the pressure relief passage 111;
  • valve body 3 and the valve body 1 is provided with a resetting device for keeping the valve body 3 up and away from the inlet end of the pressure relief passage 111, in this embodiment, the resetting device is a spring 4;
  • the peripheral wall of the valve body 3 is provided with side holes 32 communicating with the pressure chamber 31 and the valve chamber 2. In the present embodiment, there are two side holes 32.
  • the bottom of the valve body 3 is provided with a sealing block 6 made of a flexible material, and the sealing block 6 can be sealingly fitted with the end face at the inlet of the pressure relief passage 111.
  • the bottom surface of the valve chamber 2 has an upwardly convex boss 21, and the outer periphery of the valve body 3 has an annular shoulder 33.
  • the spring 4 is sleeved on the boss 21, and the lower end of the spring 4 is in contact with the bottom surface of the valve chamber 2, and the spring The upper end of the fourth surface is in contact with the annular shoulder 33; the pressure relief passage 111 extends upward through the boss 21, and the end surface at the inlet of the pressure relief passage 111 is the top surface 211 of the boss 21.
  • the top surface 211 of the boss 21 is provided with a plurality of pressure relief grooves 212 communicating with the valve chamber 2 and the pressure relief passage 111.
  • the sealing member 5 can be made of a silicone material, the sealing member 5 is entirely tubular, and the sealing member 5 is disposed under the valve cover 12 and between the outer peripheral wall of the valve body 3 and the valve seat 11, and the sealing member 5 The middle part is positioned and connected with the valve body 3, and can slide down with the valve body 3;
  • the middle portion of the outer periphery of the valve body 3 is provided with an annular fitting groove 34.
  • the middle portion of the inner peripheral wall of the sealing member 5 has a radially inner convex rib 53 embedded in the fitting groove 34.
  • the outer periphery of the upper portion 51 of the sealing member 5 is in contact with the inner wall of the valve chamber 2 to form a seal, and the lower portion 52 of the sealing member 5 blocks the side hole 32, while the outer periphery of the lower portion 52 of the sealing member 5 and the inner wall of the valve chamber 2 have a seal member 5 therebetween.
  • the lower portion 52 has a radially outwardly deformed space S. Between the inner circumference of the lower portion 52 of the seal 5 and the outer periphery of the lower portion of the valve body 3, there is a gap X through which air flows.
  • the pump works when the machine starts to brew coffee normally.
  • the high pressure water enters the valve chamber 2 from the water inlet passage 121, it first enters the pressure chamber 31 of the valve body 3 and pushes the spool assembly to move downward against the elastic force of the spring 4, Until the bottom surface of the valve body 3 blocks the pressure relief passage 111, the high pressure water continues to enter the pressure chamber 31 of the valve body 3, and since the valve body 3 is blocked from continuing to move downward, the high pressure water will be pushed laterally through the two side holes 32.
  • the lower portion 52 of the seal 5, the lower portion 52 of the seal 5 is deformed outwardly, and the high-pressure water is discharged from the water outlet passage 112 through the side holes 32, and flows into the brewing system for brewing coffee.
  • Pressure relief process When the machine stops brewing coffee, the water pump stops working and stops the supply pressure. The high pressure water no longer enters the valve chamber 2 from the water inlet passage 121, the spool assembly loses pressure, and the spool body 3 moves upward under the action of the spring 4. At the inlet end of the pressure relief passage 111, the pressure relief passage 111 is opened. Since the brewing system is still in a high pressure state at this time, excess water and pressure in the brewing system and the pipeline are discharged through the pressure relief passage 111 to achieve pressure relief.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the difference between the second embodiment and the first embodiment is only the structure of the valve cover 12 and the installation position of the sealing member 5;
  • valve cover 12 is disposed at an upper portion of the accommodating cavity 113, and the valve cover 12 has an extending portion 123 extending into a middle portion of the accommodating cavity 113, and the extending portion 123 is sealingly fitted with an inner wall of the upper portion of the valve seat 11,
  • the inner side wall of the extending portion 123 and the inner wall of the lower portion of the valve seat 11 together form the peripheral wall of the valve chamber 2;
  • the sealing member 5 is disposed between the valve body 3 and the extension portion 123 of the valve cover 12, and is slidable relative to the valve body 1 with the valve body 3, and the outer periphery of the upper portion 51 of the sealing member 5 is slipped.
  • the seal is always formed in contact with the extension of the bonnet 12.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • FIG. 14 it is a third embodiment of the present invention.
  • the bottom of the valve body 3 eliminates the arrangement of the sealing block 6, and the sealing tube 8' made of a flexible material is modified. Specifically, the sealing tube 8' is embedded in the convex portion.
  • the top of the sealing tube 8' is convexly convex on the top surface of the boss 21, and the bottom surface of the valve body 3 is provided with a communication valve chamber 2 and pressure relief.
  • the pressure relief grooves 35' are four, and are radially distributed on the bottom surface of the valve body 3.
  • valve body 3 When the pressure in the pressure chamber 31 is sufficiently large, the valve body 3 is pushed to press the bottom surface of the valve body 3 against the sealing tube 8', and the sealing tube 8' made of flexible material is deformed and embedded in the bottom surface.
  • the pressure groove 34 is closed in the pressure groove 35'.
  • the top surface of the sealing tube 8' of the present embodiment has a convex curved surface.
  • it can also be set to a spherical surface, a plane or according to actual needs. Other shapes with good sealing effect.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the main difference between the fourth embodiment and the first embodiment is that the arrangement between the valve cover 12 and the valve seat 11, the structure of the sealing member 5' and the arrangement between the valve seat 11 and the valve seat 11;
  • the sealing member 5' is disposed between the valve body 3 and the valve seat 11 and is fixed relative to the valve seat 11, and the sealing member 5' cannot move along with the valve body 3, only the valve body 3 is opposite to the valve body 1. mobile;
  • the outer portion of the upper portion 51' of the sealing member 5' is in contact with the inner wall of the valve seat 11 to form a seal, and the lower portion of the sealing member 5' has a downwardly extending annular wall 52';
  • annular wall 52' of the seal 5' surrounds the valve body 3, leaving the annular wall 52' of the seal 5'
  • the side hole 32 is shielded while the lower outer circumference of the annular wall 52' of the seal 5' and the peripheral wall of the valve chamber 2 have a space S for the radially outward deformation of the lower portion of the annular wall 52'.
  • a gap X through which air flows is formed between the inner circumference of the annular wall 52' of the seal 5' and the outer periphery of the lower portion of the valve body 3.
  • the inner wall of the valve seat 11 has an inner shoulder 115', and the valve cover 12 is inserted into the accommodating cavity 113, eliminating the arrangement of the sealing ring 7 as in the first embodiment, and the upper portion 51' of the sealing member 5' is pressed at the bottom of the bonnet 12. Between the inner shoulder 115' and the sealing member 5' and the valve body 11 are fixed, the lower inner wall of the valve seat 11 below the valve cover 12 forms the peripheral wall of the valve chamber 2.
  • valve body 3 the basic structure and operation of the valve body 3 are the same as those of the first embodiment, but the valve body 3 does not need to be positioned and connected to the seal 5', and its structure is slightly different from that of the valve body 3 in the first embodiment.
  • the side holes 32 are always located in the annular wall 52 until the bottom surface of the valve body 3 blocks the pressure relief passage 111, and the high pressure water continues to enter the pressure chamber 31 of the valve body 3, Since the valve body 3 is prevented from continuing to move downward, the high pressure water pushes the annular wall 52 of the sealing member 5 laterally through the two side holes 32, and the annular wall 52 of the sealing member 5 is radially outwardly deformed, and the high pressure water passes through the side holes 32. It is then discharged from the water outlet passage 112 and flows into the brewing system for brewing coffee.
  • Pressure relief process When the machine stops brewing coffee, the water pump stops working and stops the supply pressure. The high pressure water no longer enters the valve chamber 2 from the water inlet passage 121, the spool assembly loses pressure, and the spool body 3 moves upward under the action of the spring 4. At the inlet end of the pressure relief passage 111, the pressure relief passage 111 is opened. Since the brewing system is still in a high pressure state at this time, excess water and pressure in the brewing system and the pipeline are discharged through the pressure relief passage 111 to achieve pressure relief.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Safety Valves (AREA)

Abstract

一种两通泄压阀，包括阀体（1），阀体设有进水通道（121）、泄压通道（111）和出水通道（112），阀腔（2）内设有阀芯组件，所述阀芯组件包括阀芯体（3）和密封件（5），阀芯体能上下滑移，阀芯体的下移能与泄压通道的进口端密封配合，阀芯体的底部支撑有弹簧（4），阀芯体的周壁上设有侧孔（32），密封件设于阀芯体外周壁和阀腔的内壁之间，密封件的中部与阀芯体固定，密封件的上部外周与阀腔内壁接触，密封件的下部遮挡住侧孔，密封件的下部外周与阀腔内壁之间具有供密封元件下部径向外张变形的空间（S）。该阀结构可以有效地实现电磁阀泄压功能，且为机械原理泄压，涉及部件少且简单，故成本远低于电磁阀。

Description

两通泄压阀 技术领域
本发明涉及一种泄压元件，尤其涉及一种两通泄压阀，该两通泄压阀特别适合用于咖啡机的供水回路中。
背景技术
咖啡机或类似的饮料酿造装置其在酿造时将咖啡胶囊置于酿造腔内，水通过水泵打到加热装置中加热，热水通过位于酿造腔内的咖啡胶囊，对咖啡胶囊内的粉末进行萃取冲泡，萃取后的饮料从酿造腔的出水口流出供人使用。为了获取较好的冲泡效果，咖啡机都是利用高温高压萃取。这就导致咖啡机在煮完咖啡后，咖啡机内部其实仍然残留有一定量的高温水，如果此时直接打开手柄，会非常危险，容易有热水溅出发生烫伤使用者事故。再有，现有的咖啡机中有些带有液压的酿造系统，此种系统是靠液压推动来完成酿造腔的密封及锁死，在煮完咖啡后其内部仍然是处于高温高压锁死状态，此时是无法打开机器的。
为解决上述两种技术问题，现有的制造商大都是利用电磁阀来进行对煮完后的咖啡机泄压，当咖啡机煮完咖啡后，机器内部的电磁阀会由程序控制打开，排空内部的高温高压热水，从而解决上述热水溅出和机器打不开的问题，但是电磁阀为一种较为精密的电子器件，另外需要程序控制，故其成本较高，而且易损坏。
发明内容
本发明所要解决的技术问题是针对上述现有技术现状而提供一种结构简单合理且是完全利用机械原理实现泄压的两通泄压阀，该泄压阀具有成本低、不易损坏的优点。
本发明解决上述技术问题所采用的技术方案为：该两通泄压阀，包括内部具有阀腔的阀体和设置在阀腔内的阀芯组件；
其中，该阀体的顶部设有与阀腔相通的进水通道，阀体的底部设有与阀腔相通的泄压通道，而在阀体的侧部设有与阀腔相通的出水通道；
其特征在于：所述阀芯组件包括阀芯体和用柔性材质制成的密封件；
所述阀芯体具有开口朝上的压力腔，阀芯体能在阀腔内相对阀体上下滑移，阀芯体的下移能与所述泄压通道的进口端密封配合而将泄压通道封堵，阀芯体与阀体之间设置有一使阀芯体保持上移而离开泄压通道进口端趋势的复位装置，并且，所述阀芯体的周 壁上设有连通压力腔和阀腔的侧孔；
所述密封件设于阀芯体和阀腔的周壁之间，且密封件的上部外周与阀腔的周壁接触而形成密封，密封件的下部遮挡住所述侧孔；
同时，密封件的下部外周与阀腔的外周壁之间具有供密封件的下部径向外张变形的空间。
优选地，所述复位装置可以为一弹簧或弹性胶体，弹簧或弹性胶体的两端分别支撑在所述阀芯体外壁与阀体的内壁之间。
可选择地，所述阀体由阀座和阀盖组成；阀座具有开口朝上的容置腔，阀盖插入在容置腔的上部，阀盖的底部外围与阀座上部的内壁密封适配，而阀座中位于阀盖下方的内壁就形成所述阀腔的周壁；所述密封件位于阀盖的下方、且位于阀芯体和阀座之间；所述进水通道设置在阀盖上，所述泄压通道和出水通道则设置在阀座上。
另一选择，所述阀体由阀座和阀盖组成；阀座具有开口朝上的容置腔，阀盖设置在容置腔的上部，且阀盖具有伸入到容置腔中部的延伸部，该延伸部与阀座上部的内壁密封适配，而该延伸部的内侧壁与阀座下部的内壁就一起形成所述阀腔的周壁；所述密封件设于阀芯体和阀盖的延伸部之间，密封件的上部外周与阀盖的延伸部抵触而形成密封；所述进水通道设置在阀盖上，所述泄压通道和出水通道则设置在阀座上。
上述的密封件可跟随阀芯体相对阀体上下移动，也可不相对阀体移动，仅阀芯体相对阀体移动。
对于密封件可跟随阀芯体上下移动的情况，所述密封件的中部与阀芯体定位相连，而能随阀芯体一起相对阀体上下滑移。
优先地，所述阀芯体外周的中部设有环形嵌槽，所述密封件内周壁的中部具有径向内凸的凸筋，所述凸筋嵌设在所述嵌槽内。
本发明实施例的又一选择，也是密封件不相对阀体移动的情况：所述密封件设置在阀芯体和阀体之间并与阀体相对固定，密封件的上部外周与阀体的内壁接触而形成密封，密封件的下部具有向下延伸的环形壁；
并且，所述密封件的环形壁围绕在阀芯体之外，而使密封件的环形壁遮挡住所述侧孔。
为便于在阀腔内设置阀芯组件，所述阀体由阀座和阀盖组成；阀座具有开口朝上的容置腔，阀盖插入在容置腔的上部：所述进水通道设置在阀盖上，所述泄压通道和出水通道则设置在阀座上。
此时，对于密封件相对阀座固定的方式，优选地，阀座的内壁具有内肩胛，所述密封件的上部被压制在阀盖底部和内肩胛之间，而使密封件与阀体相对固定。
为使阀座和阀盖相互约束固定，所述阀盖外周两侧具有侧凸的插入部，阀座的容置腔上部侧壁具有供插入部插入的插槽。
为使阀芯体能给有效密封泄压通道，上述阀芯体的底部设有柔性材质制成的密封块，该密封块能与泄压通道进口处的端面密封配合。
优选地，上述阀腔的底面具有向上凸起的凸台，所述阀芯体的外周具有环形挡肩，所述弹簧套设在该凸台上，弹簧的下端与阀腔的底面抵触，弹簧的上端与环形挡肩抵触，所述泄压通道向上贯穿所述凸台，所述泄压通道进口处的端面为所述凸台的顶面。设置凸台能使阀芯体较快的将泄压通道封堵或打开，以实现尽快的正常供水和泄压，使整个泄压阀工作反应灵敏。
优选地，上述凸台的顶面开有多条连通阀腔和泄压通道的泄压槽，在密封块与凸台的顶面密封配合时，所述密封块嵌设入所述泄压槽内形成完全密封。泄压槽的设置，当密封块稍微离开凸台顶面，高压水会先经由泄压槽进行初步下压，能使该泄压阀较快进行泄压。
优选地，上述密封件的下部内周与阀芯体的下部外周之间具有供空气流通的间隙。该间隙的设置具有排空气作用，在进水通道未通水的状态下，高压水刚进入阀腔内后，多余的气体会从该间隙排出，以让高压水较快速的推动阀芯组件动作。
优选地，在所述凸台中位于泄压通道的外围嵌设有一柔性材质制成的密封管，该密封管的顶部高凸于凸台的顶部表面，并且，所述阀芯体的底面上设有连通阀腔和泄压通道的泄压槽。
进一步改进地，所述密封管的顶面呈外凸的弧面。
与现有技术相比，本发明的优点在于：当机器正常启动煮咖啡时水泵工作，高压水从进水通道进入阀腔后，首先进入阀芯体的压力腔内并推动阀芯组件克服弹簧的弹力下移，直至阀芯体底面封堵住泄压通道，高压水继续进入阀芯体的压力腔，由于阀芯体受阻不能继续下移，高压水会通过侧孔侧向推开密封件的下部，高压水经由侧孔后从出水通道排出，流入到酿造系统进行煮咖啡；
泄压时，机器停止煮咖啡时，水泵停止工作、停止供压，高压水不再从进水通道进入阀腔，阀芯组件失压，并在弹簧作用下上移离开泄压通道，泄压通道打开，由于酿造系统此时还处在高压状态，将酿造系统和管路中多余的水和压力经由泄压通道排出，实现泄压，该阀结构可以有效地实现电磁阀泄压功能，且为机械原理泄压，涉及部件少且简单，故成本远低于电磁阀。
附图说明
图1为本发明实施例一的立体结构示意图。
图2为本发明实施例一的剖视图。
图3为本发明实施例一在正常工作状态下的剖视图。
图4为本发明实施例一在泄压状态下的剖视图。
图5为本发明实施例一的立体分解图。
图6为本发明实施例一中阀芯体的立体结构示意图。
图7为本发明实施例二的立体结构示意图。
图8为本发明实施例二的剖视图。
图9为图8中I部的放大图。
图10为本发明实施例二中阀芯体与密封件的剖切图。
图11为本发明实施例二中阀体的剖切图。
图12为本发明实施例二在正常工作状态下的剖视图。
图13为本发明实施例二在泄压状态下的剖视图。
图14为本发明实施例三的剖视图。
图15为本发明实施例四的立体结构示意图。
图16为本发明实施例四的剖视图。
图17为本发明实施例四在正常工作状态下的剖视图。
图18为本发明实施例四在泄压状态下的剖视图。
图19为本发明实施例四的立体分解图。
图20为本发明实施例四中阀芯体的立体剖视图。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
实施例一：
如图1～6所示，为本发明的第一个实施例。
该两通泄压阀，包括内部具有阀腔2的阀体1和设置在阀腔2内的阀芯组件：
其中，该阀体1的顶部设有与阀腔2相通的进水通道121，阀体1的底部设有与阀腔2相通的泄压通道111，而在阀体1的侧部设有与阀腔2相通的出水通道112，阀腔2内设有阀芯组件。
本实施例中的阀体1由阀座11和阀盖12两部分组成，阀座11具有开口朝上的容置腔113，阀盖12插入在容置腔113的上部，阀盖12的底部外围与阀座11上部的内壁密封适配，而阀座11中位于阀盖12下方的内壁就形成阀腔2的周壁；
并且，阀盖12和阀座11的内壁之间设有密封圈7密封，阀盖12外周两侧具有侧凸的插入部122，阀座11的容置腔113上部侧壁具有供插入部122插入的插槽114；
另外，进水通道121设置在阀盖12上，泄压通道111和出水通道112则设置在阀座11上。
所述阀芯组件包括阀芯体3和用柔性材质制成的密封件5。
阀芯体3具有开口朝上的压力腔31，压力腔31与进水通道121相通，阀芯体3能 阀腔2内相对阀座11上下滑移，阀芯体3的下移能与泄压通道111的进口端密封配合而将泄压通道111封堵；
阀芯体3与阀体1之间设置有一使阀芯体3保持上移而离开泄压通道111进口端趋势的复位装置，在本实施例中，该复位装置为一弹簧4；
阀芯体3的周壁上设有连通压力腔31和阀腔2的侧孔32，本实施例中侧孔32有两个。
阀芯体3的底部设有柔性材质制成的密封块6，该密封块6能与泄压通道111进口处的端面密封配合。
阀腔2的底面具有向上凸起的凸台21，阀芯体3的外周具有环形挡肩33，弹簧4套设在该凸台21上，弹簧4的下端与阀腔2的底面抵触，弹簧4的上端与环形挡肩33抵触；泄压通道111向上贯穿凸台21，泄压通道111进口处的端面为凸台21的顶面211。凸台21的顶面211开有多条连通阀腔2和泄压通道111的泄压槽212，在密封块6与凸台21的顶面211密封配合时，密封块6嵌设入泄压槽212内形成完全密封。
密封件5可以采用矽胶材质制成，密封件5整体呈管状，密封件5设于阀盖12的下方、且位于阀芯体3的外周壁和阀座11之间，且密封件5的中部与阀芯体3定位相连，而能随阀芯体3一起上下滑移；
阀芯体3外周的中部设有环形嵌槽34，密封件5内周壁的中部具有径向内凸的凸筋53，凸筋53嵌设在所述嵌槽34内。密封件5的上部51外周与阀腔2内壁接触而形成密封，密封件5的下部52遮挡住所述侧孔32，同时密封件5的下部52外周与阀腔2内壁之间具有供密封件5的下部52径向外张变形的空间S。密封件5的下部52内周与阀芯体3的下部外周之间其有供空气流通的间隙X。
本两通泄压阀的工作原理及过程如下：
正常工作状态：机器正常启动煮咖啡时水泵工作，高压水从进水通道121进入阀腔2后，首先进入阀芯体3的压力腔31内并推动阀芯组件克服弹簧4的弹力下移，直至阀芯体3底面封堵住泄压通道111，高压水继续进入阀芯体3的压力腔31，由于阀芯体3受阻不能继续下移，高压水会通过两个侧孔32侧向推动密封件5的下部52，密封件5的下部52外张变形，高压水经由侧孔32后从出水通道112排出，流入到酿造系统进行煮咖啡。
泄压过程：机器停止煮咖啡时，水泵停止工作、停止供压，高压水不再从进水通道121进入阀腔2，阀芯组件失压，阀芯体3在弹簧4作用下上移离开泄压通道111的进口端，泄压通道111打开，由于酿造系统此时还处在高压状态，将酿造系统和管路中多余的水和压力经由泄压通道111排出，实现泄压。
实施例二：
如图7～13所示，为本发明的第二个实施例。
本实施例二与实施例一的区别点仅在于：阀盖12的结构和密封件5的设置位置；
具体地，所述阀盖12设置在容置腔113的上部，且阀盖12具有伸入到容置腔113中部的延伸部123，该延伸部123与阀座11上部的内壁密封适配，而该延伸部123的内侧壁与阀座11下部的内壁就一起形成所述阀腔2的周壁；
所述密封件5设于阀芯体3和阀盖12的延伸部123之间，并能随阀芯体3一起相对阀体1上下滑移，密封件5的上部51外周在其滑移时始终与阀盖12的延伸部抵触而形成密封。
实施例三：
如图14所示，为本发明的第三个实施例。
本实施例三与实施例二的区别点在于：阀芯体3底部取消了密封块6的设置，改设置一柔性材质制成的密封管8’，具体地，该密封管8’嵌入在凸台21内，并位于泄压通道111的外围，该密封管8’的顶部高凸于凸台21的顶部表面，并且，所述阀芯体3的底面上设有连通阀腔2和泄压通道111的泄压槽35’，在本实施例中，所述泄压槽35’为四条，且呈放射状分布在阀芯体3的底面上。
工作时，当阀芯体3下移其底面未贴合或刚接触到密封管8’的顶部时，泄压槽35’贯通了阀腔2和泄压通道111，能实现泄压效果；
而当压力腔31内的压力足够大，阀芯体3受推动使阀芯体3的底面挤压密封管8’，并使柔性材质制成的密封管8’变形而嵌入到底面上的泄压槽35’内，从而封堵住泄压通道111。
为了密封管8’与泄压槽35’能够达到更好的密封效果，本实施例密封管8’的顶面呈外凸的弧面，当然，也可根据实际的需要设置成球面、平面或者其他密封效果良好的形状。
实施例四：
如图15～21所示，为本发明的第四个实施例。
本实施例四与实施例一的主要区别点在于；阀盖12与阀座11之间的设置方式、密封件5’的结构及其与阀座11之间的设置方式；
具体地，所述密封件5’设置在阀芯体3和阀座11之间并与阀座11相对固定，密封件5’不能跟随阀芯体3移动，仅阀芯体3相对阀体1移动；
密封件5’的上部51’外周与阀座11的内壁接触而形成密封，密封件5’的下部具有向下延伸的环形壁52’；
并且，所述密封件5’的环形壁52’围绕在阀芯体3之外，而使密封件5’的环形壁52’ 遮挡住所述侧孔32，同时密封件5’环形壁52’的下部外周与阀腔2周壁之间具有供环形壁52’的下部径向外张变形的空间S。
密封件5’的环形壁52’内周与阀芯体3的下部外周之间具有供空气流通的间隙X。
阀座11的内壁具有内肩胛115’，阀盖12插入容置腔113内，取消了如实施例一中的密封圈7的设置，密封件5’的上部51’被压制在阀盖12底部和内肩胛115’之间，而使密封件5’与阀体11相对固定，阀座11位于阀盖12下方的下部内壁就形成所述阀腔2的周壁。
另外，阀芯体3的基本结构和工作过程与实施例一相同，但阀芯体3由于无需与密封件5’定位连接，其结构跟实施例一中的阀芯体3略有不同。
实施例四中的两通泄压阀的工作原理及过程如下：
正常工作状态；机器正常启动煮咖啡时水泵工作，高压水从进水通道121进入阀腔2后，首先进入阀芯体3的压力腔31内并推动阀芯体3克服弹簧4的弹力下移，在阀芯体3的整个下移过程中，侧孔32始终位于环形壁52内，直至阀芯体3底面封堵住泄压通道111，高压水继续进入阀芯体3的压力腔31，由于阀芯体3受阻不能继续下移，高压水会通过两个侧孔32侧向推动密封件5的环形壁52，密封件5的环形壁52径向外张变形，高压水经由侧孔32后从出水通道112排出，流入到酿造系统进行煮咖啡。
泄压过程：机器停止煮咖啡时，水泵停止工作、停止供压，高压水不再从进水通道121进入阀腔2，阀芯组件失压，阀芯体3在弹簧4作用下上移离开泄压通道111的进口端，泄压通道111打开，由于酿造系统此时还处在高压状态，将酿造系统和管路中多余的水和压力经由泄压通道111排出，实现泄压。
尽管以上详细地描述了本发明的优选实施例，但是应该清楚地理解，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (16)

  1. 一种两通泄压阀，包括内部具有阀腔(2)的阀体(1)和设置在阀腔(2)内的阀芯组件；
    其中，该阀体(1)的顶部设有与阀腔(2)相通的进水通道(121)，阀体(1)的底部设有与阀腔(2)相通的泄压通道(111)，而在阀体(1)的侧部设有与阀腔(2)相通的出水通道(112)；
    其特征在于：所述阀芯组件包括阀芯体(3)和用柔性材质制成的密封件(5)；
    所述阀芯体(3)具有开口朝上的压力腔(31)，阀芯体(3)能在阀腔(2)内相对阀体(1)上下滑移，阀芯体(3)的下移能与所述泄压通道(111)的进口端密封配合而将泄压通道(111)封堵，阀芯体(3)与阀体(1)之间设置有一使阀芯体(3)保持上移而离开泄压通道(111)进口端趋势的复位装置，并且，所述阀芯体(3)的周壁上设有连通压力腔(31)和阀腔(2)的侧孔(32)；
    所述密封件(5)设于阀芯体(3)和阀腔(2)的周壁之间，且密封件(5)的上部(51)外周与阀腔(2)的周壁接触而形成密封，密封件(5)的下部(52)遮挡住所述侧孔(32)；
    同时，密封件(5)的下部(52)外周与阀腔(2)的外周壁之间具有供密封件(5)的下部(52)径向外张变形的空间(S)。
  2. 根据权利要求1所述的两通泄压阀，其特征在于：所述复位装置为一弹簧(4)或弹性胶体，弹簧(4)或弹性胶体的两端分别支撑在所述阀芯体(3)外壁与阀体(1)的内壁之间。
  3. 根据权利要求1所述的两通泄压阀，其特征在于：所述阀体(1)由阀座(11)和阀盖(12)组成；
    阀座(11)具有开口朝上的容置腔(113)，阀盖(12)插入在容置腔(113)的上部，阀盖(12)的底部外围与阀座(11)上部的内壁密封适配，而阀座(11)中位于阀盖12下方的内壁就形成所述阀腔2的周壁；
    所述密封件(5)位于阀盖12的下方、且位于阀芯体(3)和阀座(11)之间；
    所述进水通道(121)设置在阀盖(12)上，所述泄压通道(111)和出水通道(112)则设置在阀座(11)上。
  4. 根据权利要求1所述的两通泄压阀，其特征在于：所述阀体(1)由阀座(11)和阀盖(12)组成；
    阀座(11)具有开口朝上的容置腔(113)，阀盖(12)设置在容置腔(113)的上部，且阀盖(12)具有伸入到容置腔113中部的延伸部(123)，该延伸部(123)与阀座(11)上部的内壁密封适配，而该延伸部(123)的内侧壁与阀座(11)下部的内壁就一起形成所述阀腔2的周壁；
    所述密封件(5)设于阀芯体(3)和阀盖(12)的延伸部(123)之间，密封件(5)的上部(51)外周与阀盖(12)的延伸部(123)抵触而形成密封；
    所述进水通道(121)设置在阀盖(12)上，所述泄压通道(111)和出水通道(112)则设置在阀座(11)上。
  5. 根据权利要求1所述的两通泄压阀，其特征在于：所述密封件(5)的中部与阀芯体(3)定位相连，而能随阀芯体(3)一起相对阀体(1)上下滑移。
  6. 根据权利要求5所述的两通泄压阀，其特征在于：所述阀芯体(3)外周的中部设有环形嵌槽(34)，所述密封件(5)内周壁的中部具有径向内凸的凸筋(53)，所述凸筋(53)嵌设在所述嵌槽(34)内。
  7. 根据权利要求1所述的两通泄压阀，其特征在于：
    所述密封件(5’)设置在阀芯体(3)和阀体(1)之间并与阀体(1)相对固定，密封件(5’)的上部(51’)外周与阀体(1)的内壁接触而形成密封，密封件(5’)的下部具有向下延伸的环形壁(52’)；
    并且，所述密封件(5’)的环形壁(52’)围绕在阀芯体(3)之外，而使密封件(5’)的环形壁(52’)遮挡住所述侧孔(32)。
  8. 根据权利要求7所述的两通泄压阀，其特征在于：所述阀体(1)由阀座(11)和阀盖(12)组成；阀座(11)具有开口朝上的容置腔(113)，阀盖(12)插入在容置腔(113)的上部；
    所述进水通道(121)设置在阀盖(12)上，所述泄压通道(111)和出水通道(112)则设置在阀座(11)上。
  9. 根据权利要求8所述的两通泄压阀，其特征在于：阀座(11)的内壁具有内肩胛(115’)，所述密封件(5’)的上部(51’)被压制在阀盖(12)底部和内肩胛(115’)之间，而使密封件(5’)与阀体(11)相对固定。
  10. 根据权利要求3或4或8中任一权利要求所述的两通泄压阀，其特征在于：所述阀盖(12)外周两侧具有侧凸的插入部(122)，阀座(11)的容置腔(113)上部侧壁具有供插入部(122)插入的插槽(114)。
  11. 根据权利要求2所述的两通泄压阀，其特征在于：所述阀芯体(3)的底部设有柔性材质制成的密封块(6)，该密封块(6)能与泄压通道(111)进口处的端面密封配合。
  12. 根据权利要求11所述的两通泄压阀，其特征在于：所述阀腔(2)的底面具有向上凸起的凸台(21)，所述阀芯体(3)的外周具有环形挡肩(33)，所述弹簧(4)套设在该凸台(21)上，弹簧(4)的下端与阀腔(2)的底面抵触，弹簧(4)的上端与环形挡肩(33)抵触，所述泄压通道(111)向上贯穿所述凸台(21)，泄压通道(111)进口处的端面为凸台(21)的顶面(211)。
  13. 根据权利要求12所述的两通泄压阀，其特征在于：所述凸台(21)的顶面(211)开有多条连通阀腔(2)和泄压通道(111)的泄压槽(212)，在密封块(6)与凸台(21)的顶面(211)密封配合时，所述密封块(6)嵌设入所述泄压槽(212)内形成完全密封。
  14. 根据权利要求1所述的两通泄压阀，其特征在于：所述密封件(5)的下部(52)内周与阀芯体(3)的下部外周之间具有供空气流通的间隙(X)。
  15. 根据权利要求4所述的两通泄压阀，其特征在于：在所述凸台(21)中位于泄压 通道(111)的外围嵌设有一柔性材质制成的密封管(8’)，该密封管(8’)的顶部高凸于凸台(21)的顶部表面，并且，所述阀芯体(3)的底面上设有连通阀腔(2)和泄压通道111的泄压槽(35’)。
  16. 根据权利要求15所述的两通泄压阀，其特征在于：所述密封管(8’)的顶面呈外凸的弧面。
PCT/CN2014/001060 2013-11-29 2014-11-28 两通泄压阀 WO2015078096A1 (zh)

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