Combination valve and steam brewing type coffee pot

Abstract

The utility model relates to a combination valve and a steam brewing type coffee pot. The combination valve comprises a valve seat, an upper valve body, a lower valve body, a valve element rod, a sealing ring and a spring. The valve seat is provided with a liquid inlet channel, a liquid outlet channel and a middle channel, a positioning convex part is arranged on the downward surface of the upper valve body, and a shallower first positioning concave part and a deeper second positioning concave part are arranged on the upward surface of the lower valve body; the upper valve body is lifted upwards and rotated by a corresponding angle, so that the positioning convex part can be switched and matched between the first positioning concave part and the second positioning concave part; when the positioning convex part is matched with the first positioning concave part, the positioning convex part is in a working state that coffee liquid flows out without resistance; and when the positioning convex part is matched with the second positioning concave part, the positioning convex part is in a working state that coffee liquid flows out under certain resistance. The combination valve has two working states, and the two working states can be simply and conveniently switched, so that different coffee taste and taste requirements can be met.

Description

Technical Field

[0001] The utility model relates to a combined valve and the technical field of application of the combined valve on a steam brewing coffee pot (ie a moka pot). Background Art

[0002] Steam brewing coffee pots, also known as moka pots, were first introduced to China by European and American countries. This type of steam brewing coffee pot consists of a lower pot body, an upper pot body, a coffee material box and other main parts. Its working principle is to use the steam pressure in the lower pot body to extract the coffee powder placed in the coffee material box with a flavor close to espresso. That is, when in use, steam is generated by heating the water contained in the lower pot body, and the steam pressure is used to push the water from the central tube of the coffee material box to the coffee material box to extract the coffee liquid. The extracted coffee liquid continues to be pushed up to the coffee outflow tube of the upper pot body under pressure to flow out. During the use of this type of moka pot, the coffee liquid flows out from the coffee outflow tube without resistance, and the outflow temperature of the coffee is relatively low, the taste is poor, the aroma is not enough, and there is no rich foam.

[0003] At the same time, with the improvement of living standards, in addition to the European and American habits of using coffee pots to brew coffee, young people in China have also begun to use steam-brewed coffee pots, which are becoming more and more popular among young people, especially young people who need personalized taste and flavor of coffee.

[0004] However, the existing steam brewing coffee maker cannot meet the above-mentioned needs of people, and therefore, it is necessary for relevant practitioners to make innovations. Utility Model Content

[0005] The utility model aims to provide a combination valve and a steam brewing coffee pot with the combination valve, so that the steam brewing coffee pot has two working states, namely, one is to flow out coffee liquid without resistance, and the other is to flow out coffee liquid under certain resistance, and the two working states can be easily switched to meet different coffee taste and flavor requirements.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A combination valve comprises a valve seat, an upper valve body, a lower valve body, a valve core rod, a sealing ring and a spring; the valve seat is provided with a liquid inlet channel, a liquid outlet channel and an intermediate channel for connecting the outlet of the liquid inlet channel with the inlet of the liquid outlet channel; the lower valve body is sleeved on the valve seat and fixed thereto; the upper valve body is sleeved on the lower valve body and can rotate circumferentially and move up and down relative to the lower valve body; the upper end of the valve core rod is connected to the upper valve body so that the valve core rod can move together with the upper valve body; the lower end of the valve core rod passes through the lower valve body and extends into the intermediate channel of the valve seat; the sealing ring is installed on the extending end of the valve core rod; a positioning convex portion is provided on the downward surface of the upper valve body; the downward surface of the lower valve body A shallower first positioning recess and a deeper second positioning recess are provided on the upper surface; the upper valve body is lifted upward and rotated to a corresponding angle, so that the positioning protrusion can switch and cooperate between the first positioning recess and the second positioning recess; when the positioning protrusion cooperates with the first positioning recess, the sealing ring is disengaged from the outlet of the liquid inlet channel, so that the outlet of the liquid inlet channel and the inlet of the liquid outlet channel are in a connected state; when the positioning protrusion cooperates with the second positioning recess, the sealing ring abuts against the outlet of the liquid inlet channel, so that the outlet of the liquid inlet channel and the inlet of the liquid outlet channel are in a disconnected state; the spring is used to reset the upper valve body, the valve core rod and the sealing ring downward together.

[0008] Furthermore, the liquid inlet channel is a vertical channel whose inlet opens at the lower end surface of the valve seat and whose outlet is connected to the lower end of the intermediate channel. The intermediate channel is a vertical channel which opens at the upper end surface of the valve seat and extends from top to bottom to the outlet of the liquid inlet channel. The liquid inlet channel and the intermediate channel are coaxially arranged. The liquid outlet channel is a lateral channel whose outlet opens at the side of the valve seat and whose inlet is connected to the lower end of the intermediate channel.

[0009] Furthermore, a conical diameter reduction structure that shrinks from the inlet end to the outlet end is provided between the inlet and the outlet of the liquid inlet channel.

[0010] Furthermore, the liquid outlet channel is arranged to be inclined upward from the inlet to the outlet.

[0011] Furthermore, the lower valve body includes a first upper end wall and a first circumferential wall extending downward from the circumferential side of the first upper end wall, the first upper end wall is located above the valve seat, and the center of the first upper end wall is provided with a through hole for the valve core rod to pass through, the upper surface of the first upper end wall is provided with the first positioning recess and the second positioning recess, the upper inner side of the first circumferential wall and the upper outer circumferential surface of the valve seat are interference fit, and a first sealing ring is also provided between the upper inner side of the first circumferential wall and the upper outer circumferential surface of the valve seat, and a liquid outlet gap is reserved between the lower inner side of the first circumferential wall and the outlet of the liquid outlet channel.

[0012] Furthermore, the upper valve body includes a second upper end wall and a second circumferential wall extending downward from the circumferential side of the second upper end wall, the second upper end wall is located above the first upper end wall, and the lower surface of the second upper end wall is provided with the positioning protrusion, the second circumferential wall is sleeved on the upper outer side of the first circumferential wall and loosely fits therewith, and the upper outer side of the first circumferential wall is formed with a fitting groove that fits with the second circumferential wall.

[0013] Furthermore, the spring is sleeved on the inserted end of the valve core rod, and the upper end of the spring abuts against the lower surface of the first upper end wall, and the lower end of the spring abuts against the sealing ring.

[0014] Furthermore, the upper end of the valve core rod is fixedly connected to the upper valve body via a fixing pin which horizontally penetrates the upper valve body and the upper end of the valve core rod.

[0015] Furthermore, the lower portion of the valve seat is exposed at the lower side of the lower valve body, and an external threaded connection portion and a second sealing ring located above the external threaded connection portion are provided on the lower outer peripheral surface of the valve seat.

[0016] A steam brewing coffee pot comprises a lower pot body, an upper pot body, a coffee material box and a coffee outflow pipe, wherein the coffee material box is arranged in the lower pot body, the coffee outflow pipe is arranged in the upper pot body, and the outlet end of the coffee outflow pipe is provided with the above-mentioned combined valve.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] First, the combination valve in the utility model has two working states, namely, one is to let out the coffee liquid without resistance, and the other is to let out the coffee liquid with a certain resistance. The two working states can meet different requirements for coffee taste and flavor. Specifically, when the coffee liquid flows out without resistance, the sealing ring of the combination valve is in an open state, that is, the sealing ring is separated from the outlet of the liquid inlet channel to connect the outlet of the liquid inlet channel with the inlet of the liquid outlet channel. At this time, after the extracted coffee liquid enters the liquid inlet channel, it continues to flow into the liquid outlet channel for discharge due to the lack of resistance. Therefore, the steam pressure required in this process is relatively low, that is, the coffee steaming time does not need to be too long, and the taste and aroma are relatively general; under a certain resistance, the coffee liquid flows out of the liquid inlet channel, and the coffee liquid flows out of the liquid outlet channel. The steam pressure is relatively low, that is, the coffee steaming time does not need to be too long, and the taste and aroma are relatively general. When the coffee liquid flows out, the sealing ring of the combination valve is in a closed state, that is, the sealing ring is pressed against the outlet of the liquid inlet channel so that the outlet of the liquid inlet channel and the inlet of the liquid outlet channel are not connected. At this time, only a longer coffee steaming time can be used to generate a higher steam pressure to push the sealing ring open, and then the coffee liquid entering the liquid inlet channel can flow into the liquid outlet channel and be discharged after overcoming the resistance of the sealing ring. Therefore, this process prolongs the coffee steaming time, and the coffee powder is more fully extracted. The coffee liquid that flows out is fragrant and delicious, with rich foam, good taste and flavor.

[0019] Secondly, the two working states of the combined valve in the utility model are very convenient to switch, and only the upper valve body needs to be lifted up and rotated to a corresponding angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of the working state of the combination valve of the utility model when the coffee liquid flows out without resistance.

[0021] Figure 2 It is a cross-sectional schematic diagram of the working state of the combination valve of the utility model flowing out coffee liquid under a certain resistance.

[0022] Figure 3 It is a top view schematic diagram of the upper valve body in the utility model, and the arrows in the figure indicate that the upper valve body can rotate in the clockwise and counterclockwise directions.

[0023] Figure 4 It is a three-dimensional schematic diagram of a lower valve body in the utility model at a low angle.

[0024] Figure 5 It is a structural sectional view of the steam brewing coffee maker of the utility model.

[0025] Figure 6 yes Figure 5 A is an enlarged schematic diagram. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below with reference to the embodiments given in the accompanying drawings.

[0027] like Figures 1 to 6 As shown, the embodiment of the utility model provides a combination valve and a steam brewing coffee pot having the combination valve.

[0028] The steam brewing coffee pot comprises a lower pot body 7, an upper pot body 8, a coffee material box 9 and a coffee outflow pipe 10. The coffee material box 9 is used to contain coffee powder, and the coffee material box 9 is arranged in the lower pot body 7. The coffee outflow pipe 10 is arranged in the upper pot body 8. The combination valve is arranged at the outlet end of the coffee outflow pipe 10. When working, steam is generated by heating the water contained in the lower pot body 7. The water is pushed up from the central tube 91 of the coffee material box 9 to the coffee material box 9 by the pressure of the steam to extract the coffee liquid. At the same time, the extracted coffee liquid enters the coffee outflow pipe 10 under the action of pressure, and is finally discharged into the upper pot body 8 through the combination valve.

[0029] The combination valve comprises a valve seat 1, an upper valve body 2, a lower valve body 3, a valve core rod 4, a sealing ring 5 and a spring 6. The valve seat 1 is provided with a liquid inlet channel 11, a liquid outlet channel 12 and an intermediate channel 13 for connecting the outlet 112 of the liquid inlet channel 11 with the inlet 121 of the liquid outlet channel 12. The lower valve body 3 is sleeved on the valve seat 1 and fixed thereto, and the upper valve body 2 is sleeved on the lower valve body 3 and can rotate circumferentially and move up and down relative to the lower valve body 3. The upper end of the valve core rod 4 is connected to the upper valve body 2 so that the valve core rod 4 can move together with the upper valve body 2, that is, when the upper valve body 2 rotates circumferentially and moves up and down relative to the lower valve body 3, the valve core rod 4 also rotates circumferentially and moves up and down accordingly. The lower end of the valve core rod 4 passes through the lower valve body 3 and extends into the intermediate channel 13 of the valve seat 1, and the sealing ring 5 is installed at the extending end of the valve core rod 4. A positioning protrusion 21 is provided on the downward surface of the upper valve body 2, and a shallower first positioning recess 31 and a deeper second positioning recess 32 are provided on the upward surface of the lower valve body 3. That is to say, the first positioning recess 31 and the second positioning recess 32 both have a certain depth, and the depth of the second positioning recess 32 is greater than that of the first positioning recess 31.

[0030] Lift the upper valve body 2 upward and rotate it to a corresponding angle, so that the positioning protrusion 21 can switch between the first positioning recess 31 and the second positioning recess 32. When the positioning protrusion 21 is matched with the first positioning recess 31, the sealing ring 5 is separated from the outlet 112 of the liquid inlet channel 11, so that the outlet 112 of the liquid inlet channel 11 and the inlet 121 of the liquid outlet channel 12 are in a connected state. At this time, the coffee liquid entering the coffee outlet tube 10 first enters the liquid inlet channel 11, and then continues to flow into the liquid outlet channel 12 without resistance and is discharged. This is the working state of the coffee liquid flowing out without resistance; when the positioning protrusion 21 is matched with the second positioning recess 32, the sealing ring 5 abuts against the outlet 112 of the liquid inlet channel 11. The outlet 112 of the liquid inlet channel 11 and the inlet 121 of the liquid outlet channel 12 are disconnected. At this time, the coffee liquid entering the coffee outlet tube 10 also first enters the liquid inlet channel 11, but is blocked by the sealing ring 5. Therefore, the coffee liquid cannot continue to flow into the liquid outlet channel 12, and needs to continue to heat the water contained in the lower pot body 7 to generate a higher steam pressure to overcome the resistance of the sealing ring 5 (i.e., push open the sealing ring 5), and then flow into the liquid outlet channel 12 for discharge. This is the working state of coffee liquid flowing out under a certain resistance.

[0031] The spring 6 is used to reset the upper valve body 2, the valve core rod 4 and the sealing ring 5 downward together. That is to say, when the upper valve body 2 is lifted up and rotated at a corresponding angle so that the positioning protrusion 21 is located above the first positioning recess 31 or the second positioning recess 32 to be switched, the upper valve body 2 is released, and the upper valve body 2, the valve core rod 4 and the sealing ring 5 are reset downward together under the action of the spring 6, so that the positioning protrusion 21 is stuck in the first positioning recess 31 or the second positioning recess 32 to be switched.

[0032] As described above, the liquid inlet channel 11 is a vertical channel whose inlet 111 opens on the lower end surface of the valve seat 1 and whose outlet 112 is connected to the lower end of the intermediate channel 13. The intermediate channel 13 is a vertical channel which opens on the upper end surface of the valve seat 1 and extends from top to bottom to the outlet 112 of the liquid inlet channel 11. The liquid inlet channel 11 and the intermediate channel 13 are coaxially arranged. The liquid outlet channel 12 is a lateral channel whose outlet 122 opens on the side of the valve seat 1 and whose inlet 121 is connected to the lower end of the intermediate channel 13.

[0033] As described above, a conical diameter reduction structure 113 that shrinks from the inlet end to the outlet end is provided between the inlet 111 and the outlet 112 of the liquid inlet channel 11. In the working state of the coffee liquid flowing out under the above-mentioned certain resistance, the conical diameter reduction structure 113 can make the coffee liquid entering the liquid inlet channel 11 get an acceleration to rush out after pushing open the sealing ring 5, and when the high-speed and high-pressure coffee liquid passes through the sealing ring 5, it will continue to hit the inner wall surface of the lower valve body 3 to generate a large amount of foam to flow out, which helps to improve the taste.

[0034] As described above, the liquid outlet channel 12 is arranged to be inclined upward from the inlet 121 to the outlet 122 .

[0035] As described above, the lower valve body 3 includes a first upper end wall 3a and a first peripheral wall 3b extending downward from the peripheral side of the first upper end wall 3a, the first upper end wall 3a is located above the valve seat 1, and the center of the first upper end wall 3a is provided with a through hole 3a1 for the valve core rod 4 to pass through, the upper surface of the first upper end wall 3a is provided with the first positioning recess 31 and the second positioning recess 32, the upper inner side of the first peripheral wall 3b and the upper outer peripheral surface of the valve seat 1 are interference fit, so that the lower valve body 3 and the valve seat 1 are fixed together, and a first sealing ring 3b1 is further provided between the upper inner side of the first peripheral wall 3b and the upper outer peripheral surface of the valve seat 1, and a liquid outlet gap 3b2 is reserved between the lower inner side of the first peripheral wall 3b and the outlet 122 of the liquid outlet channel 12, and in order to ensure smooth discharge of coffee liquid, it should be ensured that the liquid outlet gap 3b2 has a sufficient gap.

[0036] As described above, the upper valve body 2 includes a second upper end wall 2a and a second circumferential wall 2b extending downward from the circumferential side of the second upper end wall 2a, the second upper end wall 2a is located above the first upper end wall 3a, and the lower surface of the second upper end wall 2a is provided with the positioning protrusion 21, the second circumferential wall 2b is sleeved on the upper outer side of the first circumferential wall 3b and is loosely matched therewith, and a fitting groove 3b3 is formed on the upper outer side of the first circumferential wall 3b to fit with the second circumferential wall 2b.

[0037] As described above, in order to improve the reliability of positioning, the positioning protrusions 21 have two and are symmetrically arranged on both sides of the lower surface of the second upper end wall 2a. Correspondingly, the first positioning recesses 31 and the second positioning recesses 32 each have two, and the two first positioning recesses 31 are symmetrically arranged on both sides of the lateral direction of the upper surface of the first upper end wall 3a, and the two second positioning recesses 32 are symmetrically arranged on both sides of the longitudinal direction of the upper surface of the first upper end wall 3a. In addition, the positioning protrusion 21 is a spherical head convex shape, and the first positioning recess 31 and the second positioning recess 32 are both spherical head concave shapes.

[0038] As described above, the spring 6 is sleeved on the inserted end of the valve core rod 4 , and the upper end of the spring 6 abuts against the lower surface of the first upper end wall 3 a , and the lower end of the spring 6 abuts against the sealing ring 5 .

[0039] As described above, the upper end of the valve core rod 4 is fixedly connected to the upper valve body 2 via a fixing pin 20 horizontally penetrating the upper valve body 2 and the upper end of the valve core rod 4, so that the valve core rod 4 and the upper valve body 2 are connected as one.

[0040] As described above, the lower portion of the valve seat 1 is exposed at the lower side of the lower valve body 3, and an externally threaded connection portion 101 and a second sealing ring 102 located above the externally threaded connection portion 101 are provided on the outer peripheral surface of the lower portion of the valve seat 1. The valve seat 1 is screwed to the outlet end of the coffee outflow tube 10 through the externally threaded connection portion 101, and the outer edge of the second sealing ring 102 abuts against the inner wall of the outlet end of the coffee outflow tube 10, thereby preventing the coffee liquid entering the coffee outflow tube 10 from overflowing from the connection gap between the valve seat 1 and the outlet end of the coffee outflow tube 10.

[0041] In other embodiments of the present invention, the combination valve may also be applied to products having a similar working principle to the steam brewing coffee maker.

[0042] The above is only a preferred embodiment of the present utility model, and it cannot be used to limit the scope of the present utility model. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present utility model and the content of the utility model description are still within the scope of the present utility model patent.

Claims

1. A combination valve, characterized in that: It includes a valve seat, an upper valve body, a lower valve body, a valve core rod, a sealing ring and a spring; The valve seat is provided with a liquid inlet channel, a liquid outlet channel and an intermediate channel for connecting the outlet of the liquid inlet channel with the inlet of the liquid outlet channel. The lower valve body is sleeved on the valve seat and fixed thereto. The upper valve body is sleeved on the lower valve body and can rotate circumferentially and move up and down relative to the lower valve body. The upper end of the valve core rod is connected to the upper valve body so that the valve core rod can move together with the upper valve body. The lower end of the valve core rod passes through the lower valve body and extends into the intermediate channel of the valve seat. The sealing ring is installed on the extending end of the valve core rod. A positioning convex portion is provided on the downward surface of the upper valve body, and a shallower first positioning concave portion and a deeper second positioning concave portion are provided on the upward surface of the lower valve body. The upper valve body is lifted upward and rotated to a corresponding angle, so that the positioning protrusion can switch and cooperate between the first positioning concave portion and the second positioning concave portion. When the positioning protrusion cooperates with the first positioning concave portion, the sealing ring is separated from the outlet of the liquid inlet channel, so that the outlet of the liquid inlet channel and the inlet of the liquid outlet channel are in a connected state. When the positioning protrusion cooperates with the second positioning concave portion, the sealing ring abuts against the outlet of the liquid inlet channel, so that the outlet of the liquid inlet channel and the inlet of the liquid outlet channel are in a disconnected state. The spring is used to reset the upper valve body, the valve core rod and the sealing ring downward together.

2. A combination valve according to claim 1, characterized in that: The liquid inlet channel is a vertical channel whose inlet opens at the lower end surface of the valve seat and whose outlet is connected to the lower end of the intermediate channel. The intermediate channel is a vertical channel which opens at the upper end surface of the valve seat and extends from top to bottom to the outlet of the liquid inlet channel. The liquid inlet channel and the intermediate channel are coaxially arranged. The liquid outlet channel is a lateral channel whose outlet opens at the side of the valve seat and whose inlet is connected to the lower end of the intermediate channel.

3. A combination valve according to claim 1 or 2, characterized in that: A conical diameter reduction structure that shrinks from the inlet end to the outlet end is arranged between the inlet and the outlet of the liquid inlet channel.

4. A combination valve according to claim 1 or 2, characterized in that: The liquid outlet channel is arranged to be inclined upward from the inlet to the outlet.

5. A combination valve according to claim 1 or 2, characterized in that: The lower valve body includes a first upper end wall and a first circumferential wall extending downward from the circumferential side of the first upper end wall, the first upper end wall is located above the valve seat, and the center of the first upper end wall is provided with a through hole for the valve core rod to pass through, the upper surface of the first upper end wall is provided with the first positioning recess and the second positioning recess, the upper inner side of the first circumferential wall and the upper outer circumferential surface of the valve seat are interference fit, and a first sealing ring is also provided between the upper inner side of the first circumferential wall and the upper outer circumferential surface of the valve seat, and a liquid outlet gap is reserved between the lower inner side of the first circumferential wall and the outlet of the liquid outlet channel.

6. A combination valve according to claim 5, characterized in that: The upper valve body includes a second upper end wall and a second peripheral wall extending downward from the peripheral side of the second upper end wall, the second upper end wall is located above the first upper end wall, and the lower surface of the second upper end wall is provided with the positioning protrusion, the second peripheral wall is sleeved on the upper outer side of the first peripheral wall and is loosely matched with it, and a fitting groove is formed on the upper outer side of the first peripheral wall to fit with the second peripheral wall.

7. A combination valve according to claim 5, characterized in that: The spring is sleeved on the inserted end of the valve core rod, and the upper end of the spring abuts against the lower surface of the first upper end wall, and the lower end of the spring abuts against the sealing ring.

8. A combination valve according to claim 1 or 2, characterized in that: The upper end of the valve core rod is fixedly connected to the upper valve body through a fixing pin which horizontally penetrates the upper valve body and the upper end of the valve core rod.

9. A combination valve according to claim 1 or 2, characterized in that: The lower part of the valve seat is exposed at the lower side of the lower valve body, and an external thread connection part and a second sealing ring located at the upper side of the external thread connection part are provided on the outer peripheral surface of the lower part of the valve seat.

10. A steam brewing coffee pot, comprising a lower pot body, an upper pot body, a coffee material box and a coffee outflow pipe, wherein the coffee material box is arranged in the lower pot body, and the coffee outflow pipe is arranged in the upper pot body, characterized in that: The outlet end of the coffee outflow tube is provided with a combined valve as described in any one of claims 1-9.

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