CN218635810U - Heating box and coffee machine comprising same - Google Patents

Abstract

The utility model relates to a heating box and a coffee machine comprising the heating box. The heating box comprises a bottom cover, a heating element and a protective cover. The heating element is connected to the bottom cover to form a heating pipeline of the heating box, and the heating pipeline is provided with a water inlet and a water outlet. The heating component can generate heat under the condition of electrifying so as to heat the water flowing through the heating pipeline. The heating box further comprises at least two temperature sensors, the at least two temperature sensors extend into the heating pipeline to detect the water temperature inside the heating pipeline and the water temperature at the water outlet, and the heating power of the corresponding part of the heating element is adjusted according to the water temperature inside the heating pipeline and the water temperature at the water outlet.

Description

Heating box and coffee machine comprising same

Technical Field

The utility model relates to a field of the heater of coffee machine particularly, relates to a heating box to and the coffee machine of installing this heating box.

Background

As is well known, people apply electronic technology to coffee machines to realize automatic control of the whole coffee brewing process of grinding, pressing, filling, brewing, residue removal and the like, thereby creating coffee machines. Generally, in a coffee machine, a heating device is provided to heat water flowing therethrough, and the heated water is transferred onto coffee powder to brew a coffee beverage.

The heating means of the prior art coffee machines often comprise a heating tube and a U-bend, and the U-bend is arranged around the heating tube below the heating tube. In this case, since it is difficult to achieve a close degree of contact between the heat generating pipe and the U-bend, and there is a relatively large non-contact portion between the heat generating pipe and the U-bend, the heating efficiency of such a heating apparatus is relatively low. In addition, the heating device is relatively bulky, which increases the production and manufacturing costs of the coffee maker comprising the heating device.

In another conventional heating device of a coffee maker, the heating device includes a U-shaped heating body and a thermostat switch disposed on a right side surface of the U-shaped heating body. The U-shaped heating body comprises a U-shaped water pipe and a U-shaped heating pipe arranged in parallel with the U-shaped water pipe, and an electric heating element is arranged in the U-shaped heating pipe. In this case, too, there is a relatively large untouched portion between the U-shaped water pipe and the electric heating element in the U-shaped heating pipe, and the contact between the two is not direct, so the heating efficiency is also low. In addition, the temperature of the outside of the U-shaped heating body is detected by the temperature controller switch, not the temperature of the water flowing through the U-shaped water pipe, so that it is difficult to realize accurate temperature control of the hot water.

Therefore, there is a need to provide a heating cartridge for coffee machines that allows a rapid and precise temperature control of the water to be heated, which overcomes the above-mentioned drawbacks, and which has a small footprint and a high heating efficiency.

Disclosure of Invention

An object of the utility model is to provide a can overcome above-mentioned shortcoming be used for heating box of coffee machine, wherein through utilizing two at least temperature-sensing wares that extend to in the heating tube way, the utility model discloses a heating box for coffee machine can adjust the heating power of the corresponding part of components and parts that generate heat rapidly and accurately to realize flowing rapid and accurate accuse temperature and better coffee taste of passing the water of heating tube way.

In addition, compare in the U-shaped heating pipe around the U-shaped water pipe setting, the utility model discloses a heating element and device in the heating box is the panel form in order to have the area that reduces to constitute heating pipeline's part and transmit to heating pipeline with the heat that will produce is whole and directly, and then heating efficiency improves remarkably.

Furthermore, the present invention also aims to solve or alleviate other technical problems existing in the prior art.

According to a first aspect of the present invention, the technical solution adopted by the present invention is to provide a heating box for a coffee machine, comprising a bottom cover, a heating element and a protective cover, wherein the heating element is connected to the bottom cover to form a heating pipe of the heating box, and the heating pipe has a water inlet and a water outlet, wherein the heating element can generate heat under the condition of being powered on so as to heat water flowing through the heating pipe; and wherein the heating box further comprises at least two temperature sensors extending into the heating duct to detect a water temperature inside the heating duct and a water temperature at the water outlet, and to adjust heating power of respective portions of the heat generating component according to the water temperature inside the heating duct and the water temperature at the water outlet.

Optionally, according to an embodiment of the present invention, the heat generating component in the form of a sheet corresponds in shape to the bottom cover and is welded to the bottom cover.

Optionally, according to an embodiment of the present invention, the bottom cover includes a U-shaped central portion and a U-shaped curved portion circumscribing the U-shaped central portion, and the U-shaped curved portion constitutes a portion of the heating duct.

Optionally, according to an embodiment of the present invention, the bottom cover, the heat generating component and the protective cover are screwed together by means of one or more bolts extending through the U-shaped central portion, the heat generating component and the protective cover to shield heat radiation from the heating conduit with the protective cover.

Alternatively, according to an embodiment of the present invention, each of the at least two temperature sensors mounted with the waterproof ring extends through the U-shaped curved surface portion of the bottom cover and is fixed in the U-shaped curved surface portion by a nut.

Optionally, according to an embodiment of the present invention, the U-shaped curved surface portion of the bottom cover has at least two bosses, the at least two bosses each have a through hole extending therethrough, and the at least two temperature sensors respectively extend through the through holes in the respective bosses.

Optionally, in accordance with an embodiment of the present invention, the water inlet is fluidly connected to the water cup of the coffee machine through a water inlet silicone tube and a water inlet cartridge for receiving water to be heated, and the water outlet is fluidly connected to the brewing chamber of the coffee machine through a water outlet silicone tube, a water tube, a transfer water tube and a water outlet cartridge for delivering hot water to the brewing chamber.

Alternatively, according to an embodiment of the present invention, the heat generating component is connected to the power supply board through a power line to receive electric power from the power supply board.

Optionally, in accordance with an embodiment of the present invention, the heating cartridge is fixed in the coffee maker via a bottom cover fixing member connected to the bottom cover.

According to a second aspect of the present invention, a coffee machine is provided, having a heating cartridge as described above.

Compared with the prior art, the utility model discloses a heating box's for coffee machine basic structure is by the heating channel that bottom and heating element constitute to and be used for detecting two at least temperature-sensing wares of the inside temperature of heating tube and the temperature of its delivery port department. The heat generating element is in the form of a plate and constitutes a portion of the heating duct to heat water flowing through the heating duct.

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the invention will be apparent from the description and drawings.

Drawings

The invention may be more particularly described by way of example with reference to the accompanying drawings, which are not drawn to scale, and in which:

fig. 1 shows a front view of a coffee maker according to an embodiment of the present invention;

fig. 2 illustrates a side view of a coffee maker according to one embodiment of the present invention, with portions of the body removed to show a heating cartridge located in the body;

fig. 3 shows an exploded perspective view of a coffee maker according to an embodiment of the present invention;

fig. 4 shows a front view of a heating cartridge for a coffee machine according to an embodiment of the present invention; and

fig. 5 shows a cross-sectional view of a heating cartridge according to an embodiment of the invention along its symmetry axis.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," "third," and the like, are used for descriptive and distinguishing purposes only and are not to be construed as indicating or implying relative importance of the respective components.

As clearly shown in fig. 1, a front view of a coffee maker according to an embodiment of the present invention is provided. The coffee maker comprises a body assembly 1, a base assembly 2 and a cup assembly 3. The body assembly 1 and the cup assembly 3 are disposed above the base assembly 2.

Referring now to fig. 2 and 3, fig. 2 shows a side view of a coffee maker according to one embodiment of the present invention with portions of the body removed to show a heating cartridge located in the body, while fig. 3 shows an exploded perspective view of a coffee maker according to one embodiment of the present invention. The body assembly 1 includes a body upper frame 105, a body 106, and a body upper frame left cover 107 and a body upper frame right cover 116, both of which are substantially L-shaped, provided on the left and right sides of the body upper frame 105.

The upper body bracket 105 has two grooves provided on the left and right sides thereof and one groove on the top thereof. The upper half of the upper body bracket left cover 107 cooperates with the left side recess of the upper body bracket 105 to form a cavity for receiving the water pipe 109. In addition, although only one outlet pipe (i.e., the water pipe 109) is shown in this embodiment, it is apparent that the upper half of the upper body bracket right cover 116 may also cooperate with the right side groove of the upper body bracket 105 to form a cavity for accommodating the other outlet pipe. The top recess of the body mount 105 is provided with a central aperture for mounting the outlet box 104 and for receiving the top cover 103. The top cover 103 is U-shaped to connect to the upper body frame left cover 107 and the upper body frame right cover 116 to form a continuous and smooth outer surface to improve and enhance the aesthetic appearance of the coffee maker.

The connection between the top cover 103 and the left and right fuselage cradle covers 107, 116 may be a screw connection, a welded connection, a snap fit, or any other connection as known to those skilled in the art.

Additionally, a generally I-shaped, unmarked cross-piece bridges between the left and right fuselage cover 107, 116 of the fuselage cradle 105 to form two recesses for receiving the coffee compact 115 and water cup 102. The water cup 102 is provided at its top with a water cup lid 101 and at its bottom with a water inlet hole connected to the water inlet 124 of the heating box 1124 via a water inlet box 112 and a water inlet silicone tube 113. In order to prevent the water in the water cup 102 from leaking out of the water inlet hole, a water inlet box sealing silica gel 111 is arranged between the water inlet hole of the water cup 102 and the water inlet box 112. The water inlet box sealing silicone 111 may be in the form of an O-ring. The water cup 102 can be placed in one of the two recesses of the body cradle 105 and used to provide water to be heated.

The funnel filter 114 and the coffee cartridge 115 constitute a brewing chamber of the coffee maker for containing coffee powder and receiving water heated via the heating cartridge 1124 by the water outlet cartridge 104, so as to brew and brew the coffee powder via the received hot water. The on-body shelf 105 also includes a cover below the top recess that slidably mates with the coffee cartridge 115 for insertion and withdrawal of the coffee cartridge 115 into and from the other of the two aforementioned recesses of the on-body shelf 105 to facilitate pouring of coffee grounds and cleaning of the funnel filter 114 and the coffee cartridge 115. When the coffee cartridge 115 is inserted into the on-body shelf 105, the coffee cartridge 115 overlaps the cup assembly 3 on the base assembly 2 and directly above the cup assembly 3 so that the cup assembly 3 can receive brewed coffee.

The fuselage 106 has a base portion located at the bottom of the fuselage assembly 1 and having an opening for receiving the cup assembly 3, and a cylindrical portion extending vertically upwardly from the base portion, the circular top of which has oppositely disposed inlet silicone tube openings 126 and outlet silicone tube recesses 127 extending therethrough for receiving the inlet silicone tube 113 and the outlet silicone tube 110, respectively. In addition, the side wall of the cylindrical portion has two seats for receiving the lower halves of the respective upper body bracket left cover 107 and upper body bracket right cover 116.

The cup assembly 3 is placed in an opening in the base portion of the body 106 for receiving brewed coffee from the brewing chamber. The cup assembly 3 may be made of glass, ceramic, metal, or the like.

The body assembly 1 also includes a heating cartridge 1124 disposed within the cylindrical portion of the body 106. The heating cartridge 1124 mainly includes a bottom cover 120, a heat generating component 122, and a shield 123.

With particular reference to fig. 4 and 5, fig. 4 shows a front view of a heating cartridge for a coffee machine according to an embodiment of the invention, while fig. 5 shows a cross-sectional view of the heating cartridge according to an embodiment of the invention along its symmetry axis. As shown in fig. 4 and 5, the heat generating component 122 is coupled to the bottom cover 120 to form a U-shaped heating conduit of the heating cartridge 1124, and the U-shaped heating conduit has a water inlet 124 and a water outlet 125. The water inlet 124 may be in fluid communication with the water cup 102 through the inlet silicone tubing 113 and the inlet box 112 for receiving water to be heated. The water outlet 125 may be in fluid communication with the brew chamber through the water outlet silicone tube 110, the water tube 109, the adaptor water tube 108, and the water outlet cartridge 104 for delivering hot water to the brew chamber. Optionally, a non-illustrated one-way valve may be arranged within the inlet silicone tube 113 to ensure that water only flows from the inlet 124 to the outlet 125.

Of course, the heating cartridge 1124 may have a heating conduit with an L-shape, a straight line shape, etc., in addition to the U-shape.

In addition, the bottom cover 120 may include a U-shaped central portion and a U-shaped curved portion circumscribed on the U-shaped central portion. The U-shaped center portion is provided with a plurality of screw holes, for example, three screw holes, and the heat generating component 122 and the protective cover 123 are provided with a corresponding plurality of screw holes, for example, three screw holes, at corresponding positions. In this case, the bottom cover 120, the heat generating component 122, and the shield cap 123 may be screwed together by means of a corresponding number of bolts to protect other members (such as the power supply board 201, an electronic control unit not shown, and the like) provided in the body 106 from heat radiation from the heating duct with the shield cap 123. The heat generating component 122 in the form of a sheet substantially corresponds in shape to the bottom cover 120 (i.e., may be U-shaped as such) and is welded to the bottom cover 120 to heat water flowing through the heating duct. Of course, the connection between the heat generating component 122 and the bottom cover 120 may be achieved via an adhesive, a snap fit, or the like, in addition to welding.

The heating component 122 is connected with the power panel 201 through a power line, so as to generate heat when electrified to heat water flowing through the heating pipeline. Further, the U-shaped curved surface portion of the bottom cover 120 has two bosses, wherein one boss is located in the horizontal portion of the U-shaped curved surface portion, and the other boss is located in the left branch portion of the two branch portions of the U-shaped curved surface portion extending from the horizontal portion. Both bosses have through-holes extending therethrough. Two temperature sensors 118 extend through respective through-holes in the bosses to sense the temperature of the water in the heating conduit and at its water outlet 125, to facilitate rapid and accurate control of the temperature of the water inside the heating conduit.

Specifically, as shown in fig. 3 and 5, the temperature sensor 118 mounted with the waterproof ring 119 extends through a corresponding boss of the bottom cover 120, and is then fixed in the boss and thus the bottom cover 120 by the nut 121. The temperature sensor 118 disposed in the horizontal portion is a first temperature sensor and serves to detect the temperature of water in the heating duct, and the temperature sensor 118 disposed in the left branch portion near the water outlet 125 is a second temperature sensor and serves to detect the temperature of water at the water outlet 125 of the heating duct. Through the above arrangement, the heating power of the corresponding portion of the heating element 122 can be rapidly and precisely adjusted according to the water temperature inside the heating pipe and the water temperature at the water outlet 125, so that the water flowing out of the water outlet 125 of the heating pipe can rapidly reach a suitable temperature. The suitable temperature is a temperature that is not too high and not too low for the brewed coffee powder.

Of course, the heating cartridge 1124 may also be provided with more than two temperature sensors extending into the heating conduit, such as three temperature sensors, four temperature sensors, six temperature sensors, etc., according to the actual requirements of temperature regulation, and accordingly, the U-shaped curved surface portion of the bottom cover 120 may have a corresponding number of bosses.

In addition, the heating cartridge 1124 is secured in the body 106 using a bottom cover retainer 117, wherein the bottom cover retainer 117 is L-shaped and has a plurality of threaded holes (e.g., three threaded holes) in a lower half that correspond to the plurality of threaded holes (e.g., three threaded holes) in the heating cartridge 1124 to facilitate attachment and securement of the heating cartridge 1124.

Further, each of the bottom cover 120 and the bottom cover fixture 117 may be made of metal such as stainless steel, aluminum, copper, etc., and may be pressed from a single piece of sheet material. Optionally, temperature sensor 118 is a negative temperature coefficient temperature sensor.

Further, the base assembly 2 includes a power board 201 and a base 203. The power board 201 is mounted on the base 203 by the power board holder 202, and supplies power to the heating component 122 via the power line. The mount 203 is generally oval-shaped and mates with a base portion of the fuselage 106. In addition, the base 203 includes a bottom wall and an outer wall extending upward from the bottom wall, and in the outer wall, two recesses for engaging with the curved finger portions of the lower halves of the upper-body stand left cover 107 and the upper-body stand right cover 116 are provided.

Next, the operation of the coffee maker shown in fig. 1 according to an embodiment of the present invention will be described in detail.

First, after the coffee maker is started, water loaded in the cup 102 flows from the inlet opening in the bottom of the cup 102 through the inlet box 112 and the inlet silicone tubing 113 into the inlet 124 of the heating conduit of the heating box 1124.

Then, the power supply board 201 supplies electric power to the heat generating component 122 of the heating box 1124 via the power supply line to heat the heat generating component 122 so as to heat the water flowing through the heating pipe.

Then, the temperature of the water inside the heating pipe and the temperature of the water at the water outlet 125 thereof can be detected by means of two temperature sensors 180 extending through the bottom cover 120 of the heating cassette 1124, wherein one temperature sensor 118 is disposed in the horizontal portion of the convex portion of the bottom cover 120 and the other temperature sensor 118 is disposed in the left branch portion of the convex portion near the water outlet 125. In this case, the heating power of the respective portion of the heat generating component 122 can be adjusted rapidly and precisely so that the water of the water outlet 125 of the heating duct rapidly reaches the temperature suitable for the coffee powder in the brewing chamber. The brew chamber is formed by a funnel filter 114 and a coffee powder cartridge 115.

Finally, when the pressure in the heating duct of the heating cartridge 1124 reaches a certain value, it causes water at a suitable temperature to flow into the brewing chamber via the water outlet 125 through the water outlet silicone tube 110, the water tube 109, the transit water tube 108 and the water outlet cartridge 104, and the coffee powder located in the brewing chamber is brewed. At this point, the brewed coffee does not affect or detract from its mouthfeel due to too high or too low a water temperature, and is therefore strong and palatable.

The coffee maker described above may also comprise other necessary components for performing its function (for example, a display panel for displaying the operating state and parameters of the coffee maker, a pressure sensor for measuring the pressure in the heating conduit, etc.), which are well known to the person skilled in the art and will not be described in further detail herein.

Compared with the prior art, the heating box of the coffee machine of the utility model has the following beneficial effects. Through utilizing the temperature that extends to two at least temperature-sensing wares in the heating tube and detect the inside temperature of heating tube and its delivery port department, the utility model discloses a heating box of coffee machine can adjust the heating power of the corresponding part of heating element and part rapidly and accurately to consequently the water that makes the delivery port of heating tube reaches suitable temperature rapidly, and then realizes rapid and accurate accuse temperature and better coffee taste of water.

In addition, compare in the U-shaped heating pipe around the U-shaped water pipe setting, the utility model discloses a heating element spare among the heating box is the plate form in order to have the area that reduces to closely laminate the bottom of heating box and just be used as the part of heating tube, thereby can transmit the heat of production to heating tube directly and totally, and then heating efficiency improves remarkably.

The utility model also provides a coffee machine that contains this heating box. Thanks to the use of the heating cartridge according to the present invention, the coffee machine is structurally simple and compact in size, and the costs of production and manufacturing thereof are further reduced.

It should be understood that the above description is only for the purpose of exemplary description of the present invention, and is not intended to limit the present invention. It should be noted that, for those skilled in the art, many modifications, adaptations and variations of the present invention are possible, and such modifications, adaptations and variations do not depart from the spirit of the present invention, which is deemed to fall within the scope of the present invention.

Parts list

1 fuselage Assembly

101 cup lid

102 cup

103 top cover

104 water outlet box

105 fuselage upper bracket

106 fuselage

107 fuselage upper bracket left cover

108 switching water pipe

109 water pipe

110 water outlet silicone tube

111 Water inlet box sealing silica gel

112 water inlet box

113 water inlet silicone tube

114 funnel filter screen

115 coffee powder box

116 fuselage upper bracket right cover

117 bottom cover fixing piece

118 temperature sensor

119 waterproof ring

120 bottom cover

121 nut

122 heating element

123 shield

124 water inlet

125 water outlet

126 water inlet silicone tube opening

127 water outlet silicone tube recess

2 base component

201 power panel

202 power panel fixing frame

203 base

3 cup assembly.

Claims (10)

1. A heating cartridge for a coffee machine comprising a bottom cover, a heating element and a protective cover, the heating element being connected to the bottom cover to form a heating conduit of the heating cartridge and the heating conduit having a water inlet and a water outlet,

the heating element can generate heat under the condition of being electrified so as to heat water flowing through the heating pipeline; and

wherein the heating box further comprises at least two temperature sensors extended into the heating duct to detect a water temperature inside the heating duct and a water temperature at the water outlet, and to adjust heating power of a corresponding portion of the heating element according to the water temperature inside the heating duct and the water temperature at the water outlet.

2. A heating cartridge for a coffee machine according to claim 1, characterized in that said heating element in the form of a sheet corresponds in shape to said bottom cover and is welded to said bottom cover.

3. A heating cartridge for a coffee machine as claimed in claim 1, characterized in that said bottom cover comprises a U-shaped central portion and a U-shaped curved portion circumscribing said U-shaped central portion and constituting part of said heating duct.

4. A heating cartridge for a coffee machine according to claim 3, characterized in that the bottom cover, the heating element and the protective cover are screwed together by means of one or more bolts extending through the U-shaped central portion, the heating element and the protective cover to shield the heating duct from heat radiation by means of the protective cover.

5. A heating cartridge for a coffee machine according to claim 3, characterized in that each of said at least two temperature sensors fitted with a waterproof ring extends through said U-shaped curved portion of said bottom cover and is fixed therein by means of a nut.

6. A heating cartridge for a coffee machine according to claim 3, characterized in that said U-shaped curved portion of the bottom cover has at least two bosses, each having a through hole extending therethrough, and said at least two temperature sensors respectively extend through said through holes in the respective bosses.

7. A cartridge heater for a coffee machine as claimed in claim 1, wherein the water inlet is in fluid communication with a water cup of the coffee machine via a water inlet silicone tube and a water inlet cartridge for receiving water to be heated, and the water outlet is in fluid communication with a brewing chamber of the coffee machine via a water outlet silicone tube, a water transfer tube and a water outlet cartridge for delivering hot water to the brewing chamber.

8. A heating cartridge for a coffee machine as claimed in claim 1, wherein the heating element is connected to a power strip by a power cord to receive electrical power from the power strip.

9. A heating cartridge for a coffee machine as claimed in claim 1, wherein the heating cartridge is secured in the coffee machine via a bottom cover fixture connected to the bottom cover.

10. A coffee machine characterized in that it has a heating cartridge according to any one of claims 1 to 9.

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