JPH10174652A - coffee maker - Google Patents

Abstract

(57) [Summary] [PROBLEMS] When a water purification filter is provided in the vicinity of a hot water outlet, steam can be reliably and safely discharged, and the flavor of coffee to be extracted by effectively preventing a decrease in hot water temperature is maintained / improved. The purpose is to increase the convenience in using the filter because it has a relatively simple structure and is easy to change the filter, etc., and to use it easily. In doing so, the object is to prevent the hot water from scattering from the filter portion and to ensure safety. A hot water outlet is fixedly arranged downward and a water purification filter is provided below the hot water outlet.
21, 27, 28, 29, 30 to form a highly airtight space around the hot water outlet and the water purification filter, and a part of the wall is open to the side of the coffee liquid extraction section to release steam. The hole 36 is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coffee maker having a hot water outlet provided with a water purification filter.

[0002]

2. Description of the Related Art Conventionally, as a personal or household coffee maker, water stored in a water tank is heated by electric heating, and hot water heated by the heating is guided to a hot water outlet by a hot water supply pipe. It is known that the coffee liquid extracted by the arranged coffee liquid extraction unit is further poured into a bottle below the coffee liquid extraction unit.

[0003] In such a coffee maker, there is a coffee maker provided with a water purification filter for removing calcium or the like in the case of using tap water in the vicinity of a hot water jet. Since this water purification filter needs to be replaced according to the number of times of use or the like, it is desirable to have a removable configuration. Conventionally, a screw-in type or the like from below is mainly used, but the configuration is complicated and the operation is often troublesome.

[0004] By the way, the hot water spouted from the hot water spout has a high temperature, but there is a possibility that the temperature drops due to the influence of the surrounding air flow. When the temperature of the hot water drops, the coffee liquid extraction unit cannot perform the predetermined extraction and may impair the flavor.Therefore, if a water purification filter is provided near the hot water outlet, the hot water outlet including the water purification filter must be It is desirable to enhance the sealing of the entire surroundings. Therefore, when a water purification filter is provided, it is difficult to make it removable while maintaining airtightness, and a satisfactory one is not always known.

[0005] On the other hand, if the airtightness around the hot water jet is increased, there is no escape space for steam, and there is a danger that the inside of the hot water jet will become high pressure. Particularly immediately after the end of hot water jetting, extremely high-pressure steam is generated. Therefore, in the past, generally, a means for forming an appropriate gap and discharging steam is taken, but conversely, the above-described high airtightness is often hindered, and the steam discharging function and the airtightness maintaining function are often impaired. Are conflicting factors in terms of taste and safety, and it is difficult to balance them. It should be noted that if a large amount of tap water having a large content of calcium is used, clogging of the water purification filter is quick, steam discharge performance is reduced, and hot water is easily scattered.

Further, in the conventional general coffee maker, the steam is discharged arbitrarily from above or to the side, or from a gap in the wall without paying special attention. However, in these directions, a large amount of heat is released together with the steam, which is not preferable from the viewpoint of maintaining the hot water temperature.

[0007]

In the case of a coffee maker having a water purification filter in the vicinity of a hot water jet, a request to increase airtightness to block the flow of surrounding air to maintain the temperature of the hot water and to properly discharge steam can be obtained. It is relatively difficult to make such a configuration, and it is relatively difficult to make attachment / detachment / exchange or the like easy in consideration of the above. Conventionally, a desirable configuration is not always known.

The present invention has been made in view of such circumstances. When a water purification filter is provided near a hot water jet port, steam can be reliably and safely discharged, and a drop in hot water temperature is effectively prevented. To preserve the flavor of the coffee to be extracted
It is an object of the present invention to provide a coffee maker which can be improved, has a relatively simple structure, can provide an advantage in terms of production, can easily replace a filter, and can enhance the convenience in use. It is another object of the present invention to prevent the hot water from scattering from the filter portion and to ensure the safety even when tap water or the like having a large amount of lime is used.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention according to claim 1 comprises a water tank for storing water, a heater for heating the water stored in the water tank, and a heater for heating the water. A hot water supply pipe for guiding hot water to a downward hot water jet, a coffee liquid extracting unit disposed below the hot water jet for extracting coffee liquid by dripping hot water, and a coffee liquid disposed below the coffee liquid extracting unit A coffee maker provided with a bottle for receiving liquid, wherein a water purification filter is provided at a lower portion of the hot water outlet, wherein the hot water outlet and the water purification filter are surrounded by walls to form the hot water outlet and the water purification filter. It is characterized in that a highly airtight space is formed around the periphery and a steam vent hole is opened in a part of the wall toward the coffee liquid extracting part side.

According to a second aspect of the present invention, in the coffee maker according to the first aspect, the coffee liquid extracting section includes a cylindrical basket holder and a basket which is detachably held in the basket holder and stores coffee powder. A basket lid mounted on the basket and having a blanch hole at the center thereof, wherein the steam vent hole is arranged to face the blanch hole of the basket lid.

According to a third aspect of the present invention, in the coffee maker according to the first or second aspect, the water purification filter is held by a filter frame from above, and the end of the filter frame on the side of the steam vent hole is provided with a hot water drop. A barrier of a certain height for preventing scattering is provided.

According to a fourth aspect of the present invention, in the coffee maker according to any one of the first to third aspects, a box-shaped filter case in which the water purification filter can be slidably attached to and detached from a rail provided near a hot water outlet. And the wall of this filter case is used as a wall for forming a highly sealed space around the hot water outlet and the water purification filter, and the hole formed in the bottom wall of the filter case is used as a steam vent hole. It is characterized by.

According to a fifth aspect of the present invention, in the coffee maker according to the fourth aspect, the slide direction for attaching and detaching the filter case to and from the rail is set to a substantially horizontal direction, and the filter case is pushed into the filter case along the substantially horizontal direction. It is characterized in that a locking portion is provided which is locked to the rail later and is turned up and down to release the locking to the rail.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a coffee maker according to the present invention will be described below with reference to the drawings.

First, the overall configuration of a coffee maker according to this embodiment will be schematically described with reference to FIGS. 1 is a perspective view, and FIG. 2 is a front view partially shown in cross section.

As shown in these figures, the coffee maker of the present embodiment is roughly divided into a main body 1 for supplying hot water and keeping heat, and a coffee liquid extracting / removably and rotatably provided in the main body 1. And a bottle 3 for receiving the coffee liquid from the coffee liquid extraction unit 2. In the following description, the direction in which the bottle 3 is located in the main body 1 will be described as being forward.

The main body 1 has a base 5 having a heat retaining section 4 for placing a bottle, and a water tank 6 for storing water connected to the base 5. A circular heat insulating plate 7 is provided. The main body 1 is covered by a main body case 8, and a tank lid 9 is provided at an upper end of the water tank 6. The base 5 includes a water heating pipe (not shown) for introducing water from the bottom of the water tank 6 and a heater for heating water in the water heating pipe. The heater also heats the heat retaining plate 7 of the heat retaining section 4 at the same time. In addition,
Reference numeral 10 denotes a power cord for energizing the heater, 1
Reference numeral 1 denotes a heater switch for turning on and off the heater.

A hot water supply pipe 12 for guiding heated water upward is connected to the water heating pipe. The hot water supply pipe 12 rises upward from the base 5 and is separated from the water tank 6 by a partition wall 13. It extends to the upper part of the water tank 6 through the space 14, and it curves forward and extends substantially horizontally. A nozzle 16 having a vertically downward hot water outlet 15 is provided at the tip of the hot water supply pipe 12.
Hot water is spouted from 5 vertically downward. The upper case 1 which can be attached to and detached from the main body case 8 around the hot water jet 15
7 and the upper case 17 has a filter case 1
8 is attached. The filter case 18 holds a desalting water purification filter 19.

Next, the configuration of the hot water outlet 15 and its surroundings, the configuration of the filter case 18, the configuration of the water purification filter 19, and the like will be described with reference to FIGS. FIG. 3 is a cross-sectional view showing the portion in an enlarged manner, and FIG. 4 is an exploded perspective view showing the components in a further enlarged manner.

As shown in these figures, in the present embodiment, the upper case 17 has an upper half arc-shaped side surface shape toward the front, and the cross section of the upper case 17 orthogonal to the hot water supply direction has a square shape. I have. This upper case is a hot water supply pipe 1
2 has an upper wall 20 covering the upper side and a side wall 21 covering both sides, and airtightly covers three directions except the lower side. The distal end of the hot water supply pipe 12 is attached to a rectangular support wall 22 provided in a state of partitioning the inside of the upper case back and forth.
3 and is supported together with the nozzle 16. On both sides of the support wall 22, a pair of horizontal rails 24 for supporting the filter case 18 are opposed and protrude forward. These rails 24 have a vertical plate shape, and the lower edge on the tip side thereof is an engagement edge 25 inclined downward, so as to engage with the filter case 18. Also, rail 2
A lower step portion 26 is formed at the upper edge on the base end side of the lower end 4, and a later-described engaging claw of the filter case 18 is engaged with the engaging step portion 26.

On the other hand, the filter case 18 is box-shaped,
Front wall 2 having a curved plate shape having substantially the same curvature as upper case 17
7, a configuration having a vertical plate-like opposed side wall 28, a rear wall 29 having a low height and a rear inclined plate-like shape, and a bottom wall 30 bent at a gentle angle so that the central portion is low. Have been. That is, the filter case 18 is configured such that the upper surface and the upper half of the rear surface are open, and the other surface is surrounded by a wall. A triangular step 31 having the same angle and engaging with the engaging edge 25 and the upper edge 24a of the leading end of the rail 24 is formed on the outer surface of the side wall 28 with a concave surface 31a. A locking claw 32 that locks with the locking step 26 of the rail 24 is formed on the outer rear side of the upper edge of the both side walls 28. A notch 33 is formed at the rear end of the upper edge of both side walls 28 to facilitate the elastic operation of the locking claw 32.

A plurality of circular drip holes 34 for passing hot water spouted from the hot water spout 15 after filtration are formed in the center of the bottom wall 30 of the filter case 18 and in the vicinity of the periphery thereof. A pin hole 35 for inserting and locking a pin of a filter frame, which will be described later, is formed at both side positions. On the front edge side of the bottom wall 30, a rectangular steam vent hole 36 is formed along the front edge of the bottom wall and has a length extending to the vicinity of both side walls 28. A filter frame support wall 37 that is inclined backward is provided behind the steam vent hole 36.

The water purification filter 19 has a thick felt-like structure, for example, is disposed on the bottom wall 30 of the filter case 18, is covered with a thin cloth 38, and is further held by a filter frame 39. On both sides of the filter frame 39,
A pin 40 inserted and locked in the pin hole 35 of the bottom wall 30 of the filter case 18 projects downward. Further, a barrier 55 having a certain height is provided at the end on the front edge side of the filter frame 39 at the end on the vapor vent hole 36 side to prevent splashing of hot water drops.

As shown in FIG. 4, the filter frame 39 is mounted on the filter frame support wall 37 with the water purification filter and the cloth arranged behind the filter frame support wall 37, and the filter case is Is fixed on the bottom wall 30. In this state, the filter case 18 is
Is mounted on the support wall 22 with the filter case as a guide, and the walls 27, 28, 29, 30 of the filter case 18 are
7 is combined with each of the walls 20 and 21 so that the hot water jet 1
5 is surrounded as a highly airtight space. In this case, the water filter 19 is just the hot water jet 1
It is located just below 5. Therefore, the water purification filter 19 is similarly arranged in a highly airtight space. Further, the steam vent hole 36 opens toward the coffee liquid extracting unit 2 disposed below the steam vent hole 36.

As shown in FIG. 2, the coffee liquid extracting section 2 has a vertical cylindrical basket holder 41 having an open upper and lower surface, and is detachably held in the basket holder 41 to store coffee powder. Funnel-shaped basket 4
2 and a basket lid 44 placed on the basket 42 and having a blanch hole 43 in the center. A rotating shaft 45 is integrally provided on a side portion of the basket holder 41, and small upper and lower ends of the rotating shaft 45 are supported by opposed bearings provided on upper and lower portions of the main body case 8.

Therefore, in this embodiment, since the steam vent hole 36 of the filter case 18 is arranged to face the blanch hole 43 at the center of the basket cover 44, the steam flowing from the hot water jet 15 at the time of coffee extraction is Is discharged downward through the vapor vent hole 36 and the basket cover 4
4, it is discharged into the basket 42 without being scattered around.

When the filter case 18 is mounted on the rail 24, the engaging edges 25 of the side walls 28 are opened at a wide angle toward the rear.
The rear portion may be engaged with the rail 24 at an angle lower than the state shown in the figure, and may be gradually moved horizontally along the rail 24. As a result, the locking claw 32 finally engages with the locking step 26 of the rail 24, so that it cannot be removed in that position. Therefore, the filter case 18 is securely mounted on the rail 24 without fear of falling off. When the filter case 18 is taken out from the rail 24, the engaging edges 25 of the side walls 28 are opened at a wide angle toward the rear, so that the front end side is gradually raised from the state of FIG. Since the lifting operation is permitted, the filter case can be taken out by pulling out the filter case so as to lift it.

According to the above-described embodiment, a highly airtight space is formed around the hot water outlet 15 and the water purification filter 19 by surrounding the hot water outlet 15 and the water purification filter 19 with a wall. The temperature of the hot water can be kept high by blocking the flow of the surrounding air by increasing the temperature. Also,
By forming a steam vent hole 36 that opens toward the coffee liquid extracting section 2 at a part of the front edge of the bottom wall 30, steam can be properly discharged. In addition, when the steam is discharged downward, the temperature of the hot water is maintained at a higher temperature than in the prior art, since the heat release is small.

In particular, the coffee liquid extracting unit 2 includes a basket holder 41, a basket 42, and a blanch hole 4 in the center.
3 and the basket lid 44 having the steam vent hole facing the blanch hole 43 of the basket lid 44, so that the steam is guided into the basket 42 and does not scatter so much to the outside. Can be secured sufficiently.

Further, in this embodiment, the water purification filter 1
9 is held by the filter frame 39 from the upper side, and a barrier 37 of a constant height is provided at the end of the filter frame 39 on the side of the steam vent hole 36 to prevent the splash of hot water droplets. When the flow of the hot water becomes intense, scattering of the hot water is prevented by the barrier 37, and there is no possibility that the hot water flows out from the steam vent hole 36.

[0031]

As described in detail above, according to the coffee maker according to the present invention, steam can be reliably and safely discharged, and the flavor of the coffee to be extracted can be maintained by effectively preventing a decrease in hot water temperature. It can be improved, and the structure is relatively simple, so that an advantage in manufacturing can be obtained. In addition, the filter can be easily replaced and the convenience at the time of use can be improved. Further, even when tap water or the like having a large amount of lime is used, many effects are exhibited, such as prevention of splashing of hot water from the filter portion to ensure safety.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of a coffee maker according to the present invention.

FIG. 2 is an entire front view showing a coffee maker according to the embodiment in a partial cross section.

FIG. 3 is an exploded perspective view showing a configuration of a water purification filter and the like of the coffee maker according to the embodiment;

FIG. 4 is an exemplary sectional view showing an assembly configuration of a water purification filter and the like of the coffee maker according to the embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 2 Coffee liquid extraction part 3 Bottle 4 Heat insulation part 5 Base 6 Water tank 7 Heat insulation plate 8 Main body case 9 Tank lid 10 Power supply cord 11 Heater switch 12 Hot water supply pipe 13 Partition wall 14 Space 15 Hot water outlet 16 Nozzle 17 Upper side Case 18 Filter case 19 Water purification filter 20 Top wall 21 Side wall 22 Support wall 23 Support tool 24 Rail 25 Engagement edge 26 Lock step 27 Front wall 28 Side wall 29 Rear wall 30 Bottom wall 31 Step 31a Depressed surface 32 Stop claw 33 Notch 34 Drip hole 35 Pin hole 36 Vapor vent 37 Filter frame support wall 38 Cloth 39 Filter frame 40 Pin 41 Basket holder 42 Basket 43 Hot water hole 44 Basket lid 45 Rotating shaft 55 Barrier

Continuation of front page (72) Inventor Junji Yaguchi 1-1-1, Shibaura, Minato-ku, Tokyo Inside Toshiba Corporation Head Office

Claims (5)

[Claims] 1. A water tank for storing water, a heater for heating the water stored in the water tank, a hot water supply pipe for guiding hot water generated by heating to a downward hot water jet, and a lower portion of the hot water jet. A coffee liquid extractor that extracts coffee liquid by means of hot water dripped and a bottle that is disposed below the coffee liquid extractor and receives the coffee liquid, the coffee maker comprising: Wherein the hot water outlet and the water purification filter are surrounded by a wall to form a highly airtight space around the hot water outlet and the water purification filter, and the coffee is partially provided on the wall. A coffee maker, wherein a vapor vent hole is opened toward the liquid extraction section. 2. The coffee maker according to claim 1, wherein the coffee liquid extracting unit includes a cylindrical basket holder, a basket removably held in the basket holder, for storing coffee powder, and A coffee maker, comprising a basket lid mounted and having a blanch hole at a central portion, wherein the steam vent hole is arranged to face the blanch hole of the basket lid. 3. A coffee maker according to claim 1, wherein the water purification filter is held by a filter frame from above, and a predetermined end of the filter frame on the side of the steam vent hole for preventing splashing of hot water drops. A coffee maker with a height barrier. 4. The coffee maker according to any one of claims 1 to 3, wherein the water purification filter is housed in a box-shaped filter case that can be slidably attached to and detached from a rail provided near a hot water outlet. A coffee wherein the wall of the filter case is a wall for forming a highly sealed space around the hot water outlet and the water purification filter, and the hole formed in the bottom wall of the filter case is a steam vent hole. Maker. 5. The coffee maker according to claim 4, wherein a slide direction for attaching and detaching the filter case to and from the rail is set to a substantially horizontal direction, and the filter case is engaged with the rail after being pushed along the substantially horizontal direction. A coffee maker, comprising: a locking portion that is stopped and turned up and down to release the locking to the rail.