Coffee machine steam generator

Abstract

The utility model discloses a coffee machine steam generator belongs to coffee machine technical field, including base, be provided with heating pipe and water pipe on the base, and the base, heating pipe and water pipe are integrally formed through die casting, and are close to each other and cooperate, and heating pipe is located at the outside of water pipe, and the both sides heat conduction through the base of integrally matched, and the base is close to the temperature sensor, and the temperature sensor is through close base to heating pipe and / or water pipe temperature sensing, and the both ends of water pipe are detachable type sealed communication with the communication pipe. The structure is through the base, heating pipe and water pipe die casting integrally formed, and are close to each other and cooperate, and heating pipe is located at the outside of water pipe, and the both sides heat conduction through the base of integrally matched, make steam generator heat transfer efficiency higher, in addition, the water pipe inner diameter can reach 10mm or bigger, and the communication pipe of water pipe both ends can reach 130 degrees or so when the temperature of gas outlet, and the pressure can reach 40bar or so, make the steam amount of steam generator big.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically a coffee machine steam generator. Background Technology

[0002] Chinese Patent Document CN2925346Y, published on July 25, 2007, discloses a rapid-heating coffee maker, comprising an organism, a water tank, a container for holding coffee, a coffee basket assembly, a rapid heater, and a control device. The heater includes: a water channel, two or more heating channels surrounding the water channel, and a heat transfer shell connecting and surrounding the water channel and the heating channels. The inlet of the water channel is connected to the outlet of the water tank, and the outlet of the water channel is connected to the coffee basket assembly. A heating element is disposed within the heating channel, and the heating element is electrically connected to the control device. An insulating material is disposed around the heating element within the heating channel. The heat transfer shell of this coffee maker heater (steam generator) uses an aluminum tube, which is drawn from an aluminum alloy profile. A heating element is pressed inside the aluminum tube, but this structure results in low heat transfer efficiency. Therefore, further improvement is necessary. Utility Model Content

[0003] The present invention aims to provide a coffee machine steam generator with simple structure, high heat transfer efficiency, accurate temperature detection, good sealing performance, and strong practicality, so as to overcome the shortcomings of the prior art.

[0004] A coffee machine steam generator designed for this purpose includes a base, characterized in that: a heating tube and a water pipe are provided on the base, the base, heating tube and water pipe are integrally formed by die casting and are tightly fitted together, the heating tube is located outside the water pipe and the two are heat-conducted through the integrally fitted base, a temperature sensor is tightly attached to the base, the temperature sensor senses the temperature of the heating tube and / or water pipe by being tightly attached to the base, and both ends of the water pipe are detachably sealed and connected to connecting pipes.

[0005] At least one mounting part is integrally provided on the base, and a temperature sensor for detecting the water temperature in the water pipe is installed on the mounting part.

[0006] The base has an integral mounting position, and a fuse is installed in the mounting position.

[0007] The water pipe is connected to a connector at both ends, and the connector is sealed to the connecting pipe by a sealing assembly. The sealing assembly includes at least one sealing element, which is sleeved on the connecting pipe and located between the connecting pipe and the inner wall of the joint, and is respectively interference-fitted with the inner wall of the connecting pipe and the inner wall of the joint, so that the joint and the connecting pipe are sealed and connected by the sealing element.

[0008] The sealing assembly also includes a sealing plug and a retaining ring. The sealing plug is sleeved on the connecting pipe and located between the connecting pipe and the inner wall of the joint. The sealing plug is pressed against the outside of the sealing element. The retaining ring is clamped on the connecting pipe and is axially positioned on the joint. The retaining ring is pressed against the outside of the sealing plug.

[0009] The heating tubes are tubular in shape and there are two or more of them, with the two or more heating tubes located on the outside of the base. The water pipes are tubular in shape and made of metal, with the water pipes located in the middle of the base and between the two or more heating tubes.

[0010] The mounting part is a boss protruding from the base. The temperature sensor includes a temperature controller. A first fixing part is provided between the temperature controller and the boss. The temperature controller is fixed to the boss through the first fixing part.

[0011] The mounting part is a mounting groove recessed at the end of the base. The temperature sensor includes a temperature sensor. A first pressure plate is provided at the end of the base. The first pressure plate presses the temperature sensor onto the mounting groove. A second fixing part is provided between the first pressure plate and the base. The first pressure plate is fixed to the base by the second fixing part.

[0012] A second pressure plate is provided on the base, which presses the fuse into the mounting position. A third fixing part is provided between the second pressure plate and the base, and the second pressure plate is fixed to the base by the third fixing part.

[0013] The coffee machine includes a frame, and a base is integrally provided with a fixing part for fixing the base to the frame.

[0014] The steam generator for coffee machines of this invention is integrally formed by die-casting the base, heating tube, and water pipe, with them tightly fitted together. The heating tube is located outside the water pipe, and the two are connected by the integrally fitted base for heat conduction, which makes the heat transfer efficiency of the steam generator higher. In addition, the inner diameter of the water pipe can be 10mm or larger, and the temperature of the steam coming out of the connecting pipes at both ends of the water pipe can reach about 130 degrees and the pressure can reach about 40 bar, which makes the steam generator produce a large amount of steam. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the steam generator in one embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of the overall structure of the steam generator from another position in one embodiment of the present invention.

[0017] Figure 3 This is a partial structural diagram of a steam generator in one embodiment of the present invention.

[0018] Figure 4 This is a cross-sectional view of a steam generator in one embodiment of the present invention.

[0019] Figure 5 for Figure 4 A magnified structural diagram of point A in the middle.

[0020] Figure 6 This is an exploded view of the steam generator in one embodiment of the present invention.

[0021] Figure 7 This is an exploded view of the steam generator from another position in one embodiment of the present invention. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1-7 This coffee machine steam generator includes a base 1, on which a heating element 2 and a water pipe 3 are mounted. The base 1, heating element 2, and water pipe 3 are integrally formed by die casting and fit tightly together. The heating element 2 is located outside the water pipe 3, and the two are connected by the integrally mounted base 1 for heat conduction. A temperature sensor is attached to the base 1, and the temperature sensor senses the temperature of the heating element 2 and / or water pipe 3 by being in close contact with the base 1. Both ends of the water pipe 3 are detachably and sealed with connecting pipes 4. Because the base 1, heating element 2, and water pipe 3 are integral and fit tightly together, there are no gaps between them, resulting in better heat conduction. In addition, the temperature sensor is in close contact with the base 1, thus improving the temperature sensing effect.

[0025] The inner diameter of the water pipe 3 can be 10mm or larger, and its shape can be L-shaped, S-shaped, or other shapes. It is mainly used to generate steam. When the steam generator is installed in the coffee machine, it is placed vertically. The connecting pipes 4 are located at the upper and lower ends of the steam generator. Water enters from the lower end and steam exits from the upper end. The heating pipe 2 heats the water in the water pipe 3. More water can be adjusted to enter the steam generator, and water will not spray out of the steam generator. It can also increase the steam output. This structure is used for steam generation in coffee machines, that is, it is an accessory installed inside the coffee machine.

[0026] At least one mounting part is integrally provided on the base 1, and a temperature sensor for detecting the water temperature of the water pipe 3 is installed on the mounting part; the integrally provided mounting part makes heat transfer faster and temperature detection more accurate; the temperature sensor is connected in series in the circuit of the heating tube 2, and when the temperature sensor detects that the water temperature of the water pipe 3 has reached the set value, it cuts off the circuit, thereby stopping the heating tube 2 from heating.

[0027] The base 1 is integrally provided with a mounting position 5, and a fuse 6 is installed on the mounting position 5. The mounting position 5 is a slot. The fuse 6 is connected in series in the circuit of the heating tube 2. When the water pipe 3 is too hot, the fuse 6 melts directly, thereby stopping the heating tube 2 from heating.

[0028] The two ends of the water pipe 3 are respectively connected to the connectors 7, and the connectors 7 are sealed to the connecting pipe 4 through the sealing assembly; the connectors 7 are respectively welded to the two ends of the water pipe 3.

[0029] The sealing assembly includes at least one sealing element 8, which is sleeved on the connecting pipe 4. The sealing element 8 is located between the connecting pipe 4 and the inner wall of the connector 7, and is press-fitted with the inner walls of the connecting pipe 4 and the connector 7 respectively, so that the connector 7 and the connecting pipe 4 are sealed and connected by the sealing element 8. The sealing element 8 is a sealing ring, and two sealing elements 8 are provided.

[0030] The sealing assembly also includes a sealing plug 9 and a retaining spring 10. The sealing plug 9 is sleeved on the connecting pipe 4 and located between the connecting pipe 4 and the inner wall of the connector 7. The sealing plug 9 presses against the outside of the sealing element 8. The retaining spring 10 is clamped on the connecting pipe 4 and is axially positioned on the connector 7. The retaining spring 10 presses against the outside of the sealing plug 9, thereby preventing the sealing element 8 from loosening. The sealing element 8 can seal the gap between the connecting pipe 4 and the connector 7 to prevent water or steam from leaking from the gap, so that the steam generator does not leak when it is working.

[0031] The sealing plug 9 is provided with a pressing edge 17, which presses against the outside of the sealing element 8; the connector 7 is provided with a positioning groove 18, and the snap ring 10 passes through the positioning groove 18 so that the snap ring 10 is axially positioned and installed on the connector 7.

[0032] The heating tube 2 is a tubular shape and there are two or more of them. The two or more heating tubes 2 are located on the outside of the base 1. The water pipe 3 is a tubular shape and is made of stainless steel. The water pipe 3 is located in the middle of the base 1 and between the two or more heating tubes 2. In this embodiment, two heating tubes 2 are provided and are located on both sides of the base 1. The two heating tubes 2 and the stainless steel water pipe 3 in the middle are placed together in the mold and integrally formed by aluminum die casting, which has higher thermal efficiency. The base 1 is made of aluminum.

[0033] The mounting part is a boss 11 protruding from the middle of the base 1. The temperature sensor includes a temperature controller 12. A first fixing part is provided between the temperature controller 12 and the boss 11. The temperature controller 12 is fixed on the boss 11 by the first fixing part.

[0034] The first fixing part includes a first fixing hole 19 provided on the thermostat 12 and a second fixing hole 20 provided on the boss 11. The fastener (screw) passes through the first fixing hole 19 and is fastened to the second fixing hole 20 so that the thermostat 12 is fixed on the boss 11.

[0035] The mounting part is a mounting groove 13 recessed at the end of the base 1. The temperature sensor includes an NTC temperature sensor 14. A first pressure plate 15 is provided at the end of the base 1. The first pressure plate 15 presses the temperature sensor 14 onto the mounting groove 13. A second fixing part is provided between the first pressure plate 15 and the base 1. The first pressure plate 15 is fixed to the base 1 by the second fixing part.

[0036] The second fixing part includes a third fixing hole 21 provided on the first pressure plate 15 and a fourth fixing hole 22 provided on the base 1. The fastener (screw) passes through the third fixing hole 21 and is fastened to the fourth fixing hole 22 so that the first pressure plate 15 is fixed on the base 1.

[0037] In this embodiment, two temperature sensors are provided, namely a temperature controller 12 and a temperature sensor 14. Correspondingly, two mounting parts are provided, namely a boss 11 and a mounting groove 13.

[0038] A second pressure plate 16 is provided on the base 1. The second pressure plate 16 presses the fuse 6 onto the mounting position 5. A third fixing part is provided between the second pressure plate 16 and the base 1. The second pressure plate 16 is fixed to the base 1 by the third fixing part.

[0039] The third fixing part includes a fifth fixing hole 23 provided on the second pressure plate 16 and a sixth fixing hole 24 provided on the base 1. The fastener (screw) passes through the fifth fixing hole 23 and is fastened to the sixth fixing hole 24 so that the second pressure plate 16 is fixed on the base 1.

[0040] The coffee machine includes a frame. The base 1 is integrally provided with a fixing part for fixing the base 1 to the frame. The fixing part is a lug 26 integrally provided on both sides of the base 1. The lug 26 is provided with a fixing mounting hole 25 for fixing the base 1 to the frame. The fixing mounting hole 25 is a screw hole. The frame is also provided with corresponding screw holes. By setting screws in the screw holes, the base 1 is fixed to the frame, that is, the steam generator is fixed to the frame.

[0041] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A coffee machine steam generator, comprising a base (1), characterized in that: A heating pipe (2) and a water pipe (3) are provided on the base (1). The base (1), heating pipe (2) and water pipe (3) are integrally formed by die casting and fit tightly together. The heating pipe (2) is located outside the water pipe (3) and the two are heat-conducted through the integrally fitted base (1). A temperature sensor is attached to the base (1). The temperature sensor senses the temperature of the heating pipe (2) and / or water pipe (3) by attaching tightly to the base (1). Both ends of the water pipe (3) are detachably sealed and connected to a connecting pipe (4).

2. The coffee machine steam generator according to claim 1, characterized in that: At least one mounting part is integrally provided on the base (1), and a temperature sensor for detecting the water temperature of the water pipe (3) is installed on the mounting part.

3. The coffee machine steam generator according to claim 2, characterized in that: The base (1) is integrally provided with an installation position (5), and a fuse (6) is installed on the installation position (5).

4. The coffee machine steam generator according to claim 1, characterized in that: The two ends of the water pipe (3) are respectively connected to the connector (7), and the connector (7) and the connecting pipe (4) are sealed together by the sealing assembly; The sealing assembly includes at least one seal (8), which is sleeved on the connecting pipe (4). The seal (8) is located between the inner wall of the connecting pipe (4) and the inner wall of the connector (7) and is press-fitted with the inner walls of the connecting pipe (4) and the connector (7) respectively, so that the connector (7) and the connecting pipe (4) are sealed and connected by the seal (8).

5. The coffee machine steam generator according to claim 4, characterized in that: The sealing assembly also includes a sealing plug (9) and a retaining ring (10). The sealing plug (9) is sleeved on the connecting pipe (4) and located between the inner wall of the connecting pipe (4) and the connector (7). The sealing plug (9) is pressed on the outside of the sealing element (8). The retaining ring (10) is clamped on the connecting pipe (4) and is axially positioned on the connector (7). The retaining ring (10) is pressed on the outside of the sealing plug (9).

6. The coffee machine steam generator according to claim 4, characterized in that: The heating tube (2) is in the shape of a tubular tube and there are two or more of them. The two or more heating tubes (2) are located on the outside of the base (1). The water pipe (3) is in the shape of a tubular tube and is made of metal material. The water pipe (3) is located in the middle of the base (1) and between the two or more heating tubes (2).

7. The coffee machine steam generator according to claim 2, characterized in that: The mounting part is a boss (11) protruding from the base (1). The temperature sensor includes a temperature controller (12). A first fixing part is provided between the temperature controller (12) and the boss (11). The temperature controller (12) is fixed on the boss (11) by the first fixing part.

8. The coffee machine steam generator according to claim 2, characterized in that: The mounting part is a mounting groove (13) recessed at the end of the base (1). The temperature sensor includes a temperature sensor (14). A first pressure plate (15) is provided at the end of the base (1). The first pressure plate (15) presses the temperature sensor (14) onto the mounting groove (13). A second fixing part is provided between the first pressure plate (15) and the base (1). The first pressure plate (15) is fixed to the base (1) by the second fixing part.

9. The coffee machine steam generator according to claim 3, characterized in that: A second pressure plate (16) is provided on the base (1). The second pressure plate (16) presses the fuse (6) onto the mounting position (5). A third fixing part is provided between the second pressure plate (16) and the base (1). The second pressure plate (16) is fixed to the base (1) by the third fixing part.

10. The coffee machine steam generator according to any one of claims 1-9, characterized in that: The coffee machine includes a frame, and a base (1) is integrally provided with a fixing part for fixing the base (1) to the frame.

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