Steam type coffee machine

Abstract

The utility model discloses a steam type coffee machine which comprises a heating body, the heating body is provided with a heating cavity, a hot water channel, a steam channel, a conducting pipe and a change-over valve, the conducting pipe comprises a leading-in end, a leading-out end and a closed section communicated between the leading-in end and the leading-out end, and the leading-out end is communicated with the hot water channel or the steam channel through the change-over valve; the guide-out end is used for guiding hot water and water vapor mixed fluid to be guided out through the hot water channel when the hot water channel is guided out; the extraction assembly comprises an extraction bowl body and an extraction net, and an extraction cavity is formed in the extraction bowl body; the extraction net is arranged at the bottom end of the extraction cavity and forms an extraction interval with the bottom wall of the extraction cavity, and a liquid outlet hole is formed in the bottom end of the extraction bowl body; the liquid outlet hole is used for guiding the extraction liquid in the extraction interval out. According to the steam type coffee machine, when hot water is led out, the hot water and part of water steam can be directly brought out through the conducting pipe, and high temperature and high pressure caused by the fact that the water steam stays in the heating body are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coffee machine technical field especially, it relates to a steam type coffee machine. BACKGROUND

[0002] The steam type pressure coffee machine on the market is short of coffee production pressure, and the taste is close to American coffee, the structure increases the pressure device, increases the pressure extraction and increases the flavor.

[0003] Therefore, the existing hot water guide pipe is generally provided with a hole position, part of steam and hot water will flow back into the boiler through the hole position of the hot water guide pipe, so as to increase the pressure in the boiler with the discharge of water. UTILITARY MODEL

[0004] In order to overcome at least one of the defects of the prior art, the utility model provides a steam type coffee machine, which can directly take out hot water and part of water vapor through the guide pipe when the hot water is guided out, reduce the high pressure caused by the retention of water vapor in the heating body, and improve the extraction of coffee oil bubbles.

[0005] The utility model discloses a steam type coffee machine which can directly take out hot water and part of water vapor through the guide pipe when the hot water is guided out, reduce the high pressure caused by the retention of water vapor in the heating body, and improve the extraction of coffee oil bubbles.

[0006] A steam type coffee machine, comprising,

[0007] A heating body is provided with a heating cavity, a hot water channel, a steam channel, a guide pipe and a conversion valve, the guide pipe is installed in the heating cavity, the guide pipe comprises a guide-in end, a guide-out end and a closed section communicated between the guide-in end and the guide-out end, the guide-out end is communicated with the hot water channel or the steam channel through the conversion valve; the guide-out end is used for guiding hot water and water vapor mixed fluid to be guided out through the hot water channel when being guided out with the hot water channel;

[0008] An extraction assembly comprises an extraction bowl and an extraction net, an extraction cavity is arranged in the extraction bowl, the extraction cavity is used for receiving hot water guided out of the hot water channel; the extraction net is arranged at the bottom end of the extraction cavity and is spaced from the bottom wall of the extraction cavity to form an extraction interval, and the bottom end of the extraction bowl is provided with a liquid outlet hole; the liquid outlet hole is used for guiding extraction liquid in the extraction interval to be guided out.

[0009] Further, the top end of the heating body is provided with a guide-out channel, and the guide-out end of the guide pipe is inserted into the guide-out channel; the guide-out channel is communicated with the hot water channel or the steam channel through the conversion valve.

[0010] Further, the extraction assembly further comprises an extraction top cover and a guide channel, the extraction top cover is used for sealingly covering the top end of the extraction bowl, the extraction top cover is provided with a guide hole, one end of the guide channel is in communication with the guide hole, and the other end of the guide channel is in communication with the hot water channel.

[0011] Further, the bottom end of the extraction top cover is covered with a filter screen, and the guide hole penetrates to above the filter screen.

[0012] Further, the bottom wall of the heating cavity is provided with a groove, and the bottom end of the through pipe extends into the groove and is arranged in a spaced manner with the bottom wall of the groove.

[0013] Further, the bottom wall of the groove is provided with a protruding block, and the protruding block abuts against the bottom end of the through pipe.

[0014] Further, the top end of the groove is provided with a plurality of positioning blocks, and the plurality of positioning blocks are arranged in a spaced manner in the circumferential direction of the groove.

[0015] Further, the bottom wall of the extraction cavity is a circular arc surface, and the liquid outlet hole is arranged in the middle of the circular arc surface.

[0016] In summary, the coffee machine has the following technical effects:

[0017] Since the hot water discharged through the hot water channel is a mixture of hot water and water vapor, the water column discharged through the liquid outlet hole can be more easily extracted coffee oil when it is poured into the foaming net, so that dense coffee oil bubbles can be extracted. In addition, the closed section of the discharge pipe can seal the water vapor in the hot water, so that part of the water vapor can be discharged each time the hot water is discharged, which reduces the residual steam in the heating body, reduces the accumulation of steam in the extraction position, avoids the overflow of the coffee oil bubbles in the extraction bowl when brewing coffee due to the excessive amount of residual steam, and thus improves the coffee brewing effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 2 is a sectional view of the coffee machine of the present application;

[0019] Figure 2 FIG. 4 is an assembly structure diagram of the heating body and the extraction top cover of the coffee machine of the present application;

[0020] Figure 3 FIG. 6 is a partial assembly structure diagram of the heating body and the extraction top cover of the coffee machine of the present application;

[0021] Figure 4 FIG. 8 is a schematic diagram of the internal pipeline communication of the coffee machine of the present application;

[0022] Figure 5 FIG. 10 is a structure diagram of the extraction top cover of the present application;

[0023] Figure 6 The utility model discloses an extraction bowl body and the structural diagram of extraction net.

[0024] Among them, the signification of the sign is as follows: 10, machine body, 20, heating body, 21, heating cavity, 211, recess, 212, lug, 22, lead -through pipe, 23, lead -out channel, 24, hot water channel, 25, steam channel, 31, extraction bowl body, 311, liquid outlet, 312, circular arc surface, 32, extraction net, 33, extraction top cover, 34, guide channel, 35, filter screen, 36, frothing net, 40, conversion valve. DETAILED DESCRIPTION

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

[0026] In the description of the utility model, it is explained that the orientation or position relation of terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element being indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting 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] Referring to Figures 1-6 The utility model discloses a steam type coffee machine, including machine body 10, heating body 20 and extraction assembly, install heating body 20 and extraction assembly on machine body 10, be equipped with heating cavity 21, hot water channel 24, steam channel 25, lead -through pipe 22 and conversion valve 40 in heating body 20, install lead -through pipe 22 in heating cavity 21, lead -through pipe 22 includes import end, export end and the closed section of intercommunication between import end and export end, import end is led through with heating cavity 21, and export end is led through with hot water channel 24 or steam channel 25 through conversion valve 40. Specifically, export end can guide hot water and water vapor mixed fluid to be led out through hot water channel 24 when being led out with hot water channel 24.

[0029] The extraction assembly comprises an extraction bowl 31 and an extraction screen 32, the extraction bowl 31 is provided with an extraction cavity, the extraction screen 32 is arranged at the bottom end of the extraction cavity, the extraction screen 32 is spaced apart from the bottom wall of the extraction cavity to form an extraction gap, a plurality of screen holes on the extraction screen 32 can allow the coffee liquid to pass through, and the coffee powder residue can be retained. The bottom end of the extraction bowl 31 is provided with a liquid outlet hole 311, which can guide the extraction liquid in the extraction gap to flow out.

[0030] On the basis of the above structure, when the steam type coffee machine of the utility model is used, during the extraction of coffee, the outlet end of the through pipe 22 is switched to the state of being communicated with the hot water channel 24 by the switching valve 40, so that the hot water in the heating cavity 21 can enter through the inlet end of the through pipe 22. After entering the through pipe 22, since the part of the through pipe 22 between the inlet end and the outlet end is a closed section, after the hot water enters the inlet end, it is guided to the outlet end by the closed section. Since the hot water is mixed with water vapor, after entering the closed section, the water flow is guided out together with the water vapor to the hot water channel 24, and then to the extraction cavity of the extraction bowl 31 of the extraction assembly through the hot water channel 24. In this way, the brewing water is mixed with the coffee powder on the extraction screen 32 for brewing, and the coffee extraction liquid generated can flow to the extraction gap through the screen holes of the extraction screen 32 and be concentrated to the liquid outlet hole 311 to be concentrated and guided out to the brewing screen 36 of the extraction base of the coffee machine, so as to realize coffee extraction.

[0031] Since the hot water guided out through the hot water channel is a mixture of hot water and water vapor, the water column guided out through the liquid outlet hole 311 can more easily extract coffee oil and fat when brewing to the brewing screen, so that dense coffee oil and fat bubbles can be extracted. In addition, the closed section of the outlet pipe can seal the water vapor in the hot water, so that part of the water vapor can be guided out each time the hot water is guided out, thereby reducing the residual steam inside the heating body 20, reducing the accumulation of steam at the extraction position, avoiding the overflow of the coffee oil and fat bubbles of the extraction bowl 31 when brewing coffee due to excessive residual steam, and thus improving the coffee brewing effect.

[0032] It should be noted that the closed section of the through pipe 22 between the inlet end and the outlet end of the present application is in a fully sealed state, so that after the hot water and water vapor enter, the water vapor does not leak and can be guided out together with the water flow to the extraction position. The switching valve 40 described above can be selected from existing technologies such as electromagnetic valves, three-way valves and other structures that can be used to switch waterways.

[0033] After the coffee brewing is completed, water vapor can still remain in the heating body 20. In order to release the pressure caused by the internal vapor remaining, the outlet end of the guide pipe 22 can be guided to the steam passage 25 through the switching valve after brewing. Of course, if steam is needed for milk frothing, the outlet end of the guide pipe 22 can be guided to the steam passage 25 through the switching valve, and the steam in the heating body 20 can also be guided to the steam wand through the steam passage 25 for milk frothing.

[0034] Further, the heating body 20 can be provided with an outlet passage 23 at the top end, the outlet end of the guide pipe 22 is inserted into the outlet passage 23, and the outlet passage 23 is in communication with the hot water passage 24 or the steam passage 25 through the switching valve 40. The outlet passage 23, the hot water passage 24, and the steam passage 25 are arranged in the heating body 20, and the switching valve 40 is arranged between the outlet passage 23 and the hot water passage 24 and the steam passage 25 to switch. The outlet end of the guide pipe is inserted into the outlet passage 23, which is convenient to assemble.

[0035] Further, the above-mentioned extraction assembly further comprises an extraction top cover 33 and a guide passage 34. The extraction top cover 33 can be sealed and capped at the top end of the extraction bowl 31. The extraction top cover 33 is provided with a guide hole, one end of the guide passage 34 is in communication with the guide hole, and the other end of the guide passage 34 is in communication with the hot water passage 24. In this way, when the extraction assembly is assembled with the heating body 20, the guide passage 34 on the extraction top cover 33 can be assembled in communication with the hot water passage 24 of the heating body 20, and then the hot water and water vapor discharged from the hot water passage 24 can enter the extraction top cover 33.

[0036] The extraction bowl 31 of the extraction assembly can be assembled and sealed below the extraction top cover 33, which can be rotary assembled or buckled assembled, and the specific assembly method is not limited.

[0037] When brewing coffee, coffee powder is placed on the extraction screen 32 of the extraction bowl 31, and the hot water discharged from the hot water passage 24 can enter the extraction bowl 31 through the guide passage 34 of the extraction top cover 33 to brew the coffee powder on the extraction screen 32.

[0038] Specifically, the bottom end of the extraction top cover 33 is capped with a filter screen 35, and the guide hole penetrates above the filter screen 35. In this way, the hot water and part of the water vapor guided to the guide hole through the guide passage 34 can be dispersed through the filter screen 35 to balance the water pressure and air pressure of the discharged hot water, preventing bubbles caused by the concentration of hot water during the brewing of coffee.

[0039] Further, the bottom wall of the heating cavity 21 can be provided with a groove 211, and the bottom end of the guide pipe 22 extends into the groove 211 and is spaced apart from the bottom wall of the groove 211. In this way, when hot water is guided and discharged, the hot water can be concentrated at the position of the groove 211 and guided and discharged through the guide pipe 22, so that the hot water and steam in the heating cavity 21 can be more concentrated and discharged.

[0040] Further, the bottom wall of the groove 211 can be provided with a protrusion 212, and the protrusion 212 abuts against the bottom end of the guide pipe 22. The protrusion 212 abuts against the bottom end of the guide pipe 22. Since the guide pipe 22 extends into the groove 211, the inlet end of the guide pipe 22 is in a suspended state in order to guide water. Therefore, the protrusion 212 can abut against the outlet end to reduce the shaking during the discharging process.

[0041] Further, the top end of the groove 211 is provided with a plurality of positioning blocks, which are spaced apart in the circumferential direction of the groove 211 and surround the outer periphery of the guide pipe 22 to position and assemble the outlet end of the guide pipe 22. At the same time, the spacing between the plurality of positioning blocks can disperse the water flow and air flow into the groove 211, and the water flow and air flow are concentrated, so that the discharging speed is smooth.

[0042] Further, the bottom wall of the extraction cavity is a circular arc surface 312, and the liquid outlet hole 311 is arranged at the middle of the circular arc surface 312. During coffee extraction, the coffee liquid extracted through the extraction net 32 can enter the extraction space, and then be guided downward along the inner circumferential wall of the circular arc surface 312 to the liquid outlet hole 311 at the middle position, and form a concentrated extraction liquid column through the liquid outlet hole 311. Due to the arrangement of the arc surface, the coffee liquid generated by extraction can flow smoothly downward, and at the same time, the coffee powder residue in the extraction liquid can also be retained on the arc surface, so that the coffee extraction liquid generated is more pure.

[0043] In addition, the extraction liquid guided by the arc surface can convert the gravitational potential energy of water into kinetic energy when the extraction liquid flows down along the arc surface, and the water flow velocity increases. The arc surface can also decompose force to pressurize the flowing extraction liquid. In this way, the extraction liquid concentrated to the liquid outlet hole 311 has a larger pressure, the fluid pressure to the liquid outlet hole 311 is larger, and it is easier to foam, so that the coffee brewing taste is better.

[0044] The technical means disclosed in the technical scheme of the present application is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements are also considered to be within the protection scope of the present application.

Claims

1. A steam type coffee maker, characterized in that , including, The heating body is provided with a heating cavity, a hot water channel, a steam channel, a lead-through pipe and a conversion valve, the lead-through pipe is installed in the heating cavity, the lead-through pipe comprises a lead-in end, a lead-out end and a closed section communicated between the lead-in end and the lead-out end, and the lead-out end is communicated with the hot water channel or the steam channel through the conversion valve; the lead-out end is used for guiding the mixed fluid of hot water and water vapor to be led out through the hot water channel when being communicated with the hot water channel; The extraction assembly comprises an extraction bowl and an extraction net, the extraction bowl is provided with an extraction cavity for receiving hot water led out from the hot water channel, the extraction net is arranged at the bottom end of the extraction cavity and is spaced from the bottom wall of the extraction cavity to form an extraction space, and the bottom end of the extraction bowl is provided with a liquid outlet hole; the liquid outlet hole is used for guiding extraction liquid in the extraction space to be led out.

2. Steam coffee machine according to claim 1, characterized in that The top end of the heating body is provided with a lead-out channel, the lead-out end of the lead-through pipe is inserted into the lead-out channel, and the lead-out channel is communicated with the hot water channel or the steam channel through the conversion valve.

3. The steam type coffee maker according to claim 1, characterized in that, The extraction assembly further comprises an extraction top cover and a guide channel, the extraction top cover is used for sealingly covering the top end of the extraction bowl, the extraction top cover is provided with a guide hole, one end of the guide channel is communicated with the guide hole, and the other end of the guide channel is communicated with the hot water channel.

4. The steam type coffee maker according to claim 3, characterized in that, The bottom end of the extraction top cover is covered with a filter net, and the guide hole penetrates upward of the filter net.

5. The steam type coffee maker according to claim 1, characterized in that, The bottom wall of the heating cavity is provided with a groove, the bottom end of the lead-through pipe extends into the groove and is arranged in space with the bottom wall of the groove.

6. The steam type coffee maker according to claim 5, characterized in that, The bottom wall of the groove is provided with a protrusion, and the protrusion abuts against the bottom end of the lead-through pipe.

7. The steam type coffee maker according to claim 5, characterized in that, The top end of the groove is provided with a plurality of positioning blocks, and the positioning blocks are arranged in space in the circumferential direction of the groove.

8. Steam coffee machine according to any of the claims 1-7, characterized in that, The bottom wall of the extraction cavity is a circular arc surface, and the liquid outlet hole is arranged at the middle of the circular arc surface.

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