Dual-function heating structure for hot drink vending machine

Abstract

The utility model relates to an electric heating technology, and aims to provide a dual-function heating structure for a hot drink vending machine. In the product, the main body parts of the electric heating pipe and the metal water pipe are positioned in the aluminum casting wrapping body, the aluminum casting wrapping body is connected with the fin structure, and the aluminum casting wrapping body and the fin structure are of an integrated structure; a fan is arranged in the air duct; an air duct outlet is connected with the air guide box body; an air inlet and an air outlet are oppositely formed in the side face of the air guide box body, and the fin structure is installed in the air guide box body through an opening in the upper portion of the air guide box body, so that air exchanges heat with the fin structure in the air guide box body. According to the product, the functional requirements of two different heating media can be met by only one electric heating system, so that the overall energy consumption, the internal installation space, the comprehensive manufacturing cost, the circuit control logic, the equipment stability and the like of the machine are well optimized and improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating, and particularly relates to a dual-function heating structure for a hot drink vending machine. Background Art

[0002] With the continuous development of market demand, hot drink vending machines are increasingly used in various scenarios due to their advantages such as small floor area, being able to be arranged at any time, requiring no on-site personnel, and being convenient for mass promotion. Among them, hot drink vending machines that use independently packaged dry powder (such as coffee, tea drinks, etc.) for brewing are particularly popular among consumers because the dry powder has a long shelf life and can retain a taste closer to the pure original product.

[0003] To meet the brewing requirements of the above-mentioned independently packaged dry powder, a heating device capable of automatically supplying hot water and hot air, as well as a transmission mechanism for conveying the bagged dry powder, are usually provided inside the current hot drink vending machine. After the user completes the payment by scanning the code or inserting coins, the transmission mechanism automatically conveys the bagged dry powder to the heating mechanism. The hot water inside the vending machine is provided by an electric heater, and hot water is injected into the packaging bag through a needle-shaped water injection port at the upper end of the packaging bag. After the hot water and the dry powder are fully mixed inside the packaging bag to form a drink that meets the selling requirements, hot air is blown by a hot air device towards the sealing part below the packaging bag to make the rubber strip at the sealing end lose its effectiveness due to heat. At this time, the drink will flow from the sealing end through a pipeline to the liquid outlet of the vending machine and finally enter the hot drink cup provided for the user.

[0004] Currently, the hot drink vending machines available on the market usually adopt a split heating structure. That is, a bare wire electric heater with an air duct is used to provide the hot air required for sealing and unpacking the bagged dry powder, and another liquid heater is used to provide hot water for preparing hot drinks. Such a product design form exists because the current hot drink vending machines evolved from the previous large-pack automatic coffee vending machine equipment. The large-pack vending machines usually perform brewing operations by quantitatively releasing dry powder and providing corresponding hot water. Its unpacking operation is manually achieved by workers during installation, and the unpacking problem faced by individual independent packages is not involved during the automatic vending process of the equipment. Therefore, when changing to using independently packaged products to meet market demands, manufacturers need to additionally install a heater with an air outlet in the equipment to provide a hot air source for the unpacking operation. Considering economic factors such as making the best use of existing molds, production lines, etc., manufacturers usually only make simple modifications to the original automatic coffee vending machine and additionally add a bare wire heater specifically used to provide the heat source for unpacking. However, this seemingly direct and simple design idea results in the need to install two heating devices in the overall vending machine equipment, which will lead to a larger installation space required, increased heat loss and equipment energy consumption; at the same time, for the control logics and safety protections of the two different heating devices, it not only makes the operation stability of the equipment worse but also leads to an increase in production costs.

[0005] Therefore, it is necessary to propose a new heating structure product to solve the above problems. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the deficiencies in the prior art and provide a dual-functional heating structure for a hot drink vending machine.

[0007] To solve the above technical problem, the solution adopted by this utility model is:

[0008] Provide a dual-functional heating structure for a hot drink vending machine, including an electric heating tube for heating and a metal water pipe for passing water. The main parts of the electric heating tube and the metal water pipe are both located inside an aluminum casting enclosure, and the aluminum casting enclosure is connected to a fin structure and the two are of an integral structure;

[0009] The heating structure further includes an air duct equipped with a fan, and the air duct outlet is connected to a wind guiding box body; the side of the wind guiding box body is relatively provided with an air inlet and an air outlet, and the air inlet is connected to the air duct outlet; the fin structure is installed in the wind guiding box body through an upper opening of the wind guiding box body, so that the air from the air duct exchanges heat with the fin structure in the wind guiding box body; the ends of the electric heating tube and the metal water pipe both extend out of the aluminum casting body and are respectively used to connect the power supply and the inlet and outlet water pipelines.

[0010] As an improved technical solution, the circumferential dimension of the fin structure is smaller than that of the aluminum casting enclosure, and a step is formed between the lower edge of the aluminum casting enclosure and the fin structure; the air guiding box body is a metal air guiding box body and has a rim adapted to the step; when the fin structure is installed in the air guiding box body, the lower edge of the aluminum casting enclosure is in close contact with the rim of the air guiding box body.

[0011] As an improved technical solution, screw holes are provided on two opposite sides of the air guiding box body where no air inlet and air outlet are provided, and the aluminum casting enclosure and the air guiding box body are fixedly connected by screws.

[0012] As an improved technical solution, an NTC assembly groove is provided on the surface of the aluminum casting enclosure near the end of the metal water pipe, and the NTC component is fixedly installed in the NTC assembly groove by screwing or welding.

[0013] As an improved technical solution, a temperature control switch is provided on the surface of the aluminum casting enclosure, and the end of the electric heating tube and the temperature control switch are connected to an external power supply through wires to form a circuit.

[0014] As an improved technical solution, a temperature measuring element is provided at the air outlet of the air guiding box body, and the temperature measuring element and the fan in the air duct are connected to an external controller through wires to form a control circuit.

[0015] As an improved technical solution, the fin structure has a plurality of fins arranged in parallel and alternately, and each fin is in a straight structure or a zigzag structure.

[0016] As an improved technical solution, the air guiding box body is a hollow structure, and the fin structure is located in the inner cavity of the air guiding box body; alternatively, a plurality of flow disturbing vanes adapted to the fin layout are provided inside the air guiding box body, and each flow disturbing vane is arranged alternately with the adjacent fin and does not contact each other.

[0017] As an improved technical solution, mounting brackets are respectively provided outside the fin structure, the air guiding box body and the air duct for fixed installation.

[0018] As an improved technical solution, the main body parts of the electric heating tube and the metal water pipe have any one of the following structural forms and mutual positional relationships:

[0019] (1) The main body part of the electric heating tube is arranged in a spiral shape, and the main body part of the metal water pipe is arranged in a spiral shape or a folded-back shape; the inner diameter of the spiral shape of the main body part of the electric heating tube is larger than the maximum outer diameter of the main body part of the metal water pipe, and the latter is nested and installed inside the former;

[0020] (2) The main body part of the metal water pipe is arranged in a spiral shape, and the main body part of the electric heating pipe is arranged in a spiral shape or a folded-back shape; the inner diameter of the spiral shape of the main body part of the metal water pipe is larger than the maximum outer diameter of the main body part of the electric heating pipe, and the latter is nested and installed inside the former.

[0021] (3) The main body parts of the electric heating pipe and the metal water pipe are both arranged in a zigzag shape and have the same size, and the two are arranged adjacent to each other in the same direction.

[0022] Compared with the prior art, the technical effects of the present utility model are as follows:

[0023] 1. Through the innovative structural design, the present utility model makes full use of the good heat conduction performance of the aluminum casting package to realize providing heat sources for both the metal water pipe and the fin structure in the air duct at the same time; thus, a single electric heater can meet the requirements of the hot drink vending machine for two different heating functions at the same time. Since the vending machine only needs to control one electric heating system, the electric heating control logic can be simplified, and the stability of the overall performance of the device has been greatly improved.

[0024] 2. Compared with the prior art of additionally adding a bare wire heater to provide hot air, the present utility model can reduce the installation components inside the device, and has been well optimized in terms of reasonably using the internal space of the device, reducing the overall power consumption, and reducing the comprehensive cost.

[0025] 3. The present utility model installs an NTC component on the aluminum casting package near the end of the metal water pipe, and sets a temperature measuring element at the air outlet of the fin structure, and can respectively control the operating power of the electric heating pipe and the fan according to the supply requirements of hot water and hot air; this design enables the water temperature and the air outlet temperature to have the possibility of flexible adjustment in a wide range, so it has a general adaptability to the diverse process requirements when facing different hot drink processing, and can better meet the needs of downstream manufacturers compared with the traditional heating structure. Brief Description of the Drawings

[0026] Figure 1 It is the overall structure diagram of the dual-function heating structure (the air duct is not included).

[0027] Figure 2 For Figure 1 The exploded view of the heating structure in

[0028] The reference numerals in the figure are: 1 electric heating pipe; 2 metal water pipe; 3 aluminum casting package; 4 air guide box body; 5 fin structure. Detailed Description of the Specific Embodiment

[0029] The following combines the drawings to describe the specific embodiment of the present utility model in detail.

[0030] Such as Figure 1 、 2As shown in the figure, the dual-functional heating structure for a hot drink vending machine in the present utility model includes an electric heating tube 1 for heating and a metal water pipe 2 for water passage. The main parts of the electric heating tube 1 and the metal water pipe 2 are both located inside an aluminum casting enclosure 3. The aluminum casting enclosure 3 is connected to a fin structure 5 and the two are of an integral structure. The ends of the electric heating tube 1 and the metal water pipe 2 both extend out of the aluminum casting enclosure 3 and are respectively used for connecting a power supply and an inlet and outlet water pipeline.

[0031] The product structures of the electric heating tube 1 and the metal water pipe 2 are selected according to conventional design schemes, and no special requirements are made for the present utility model. The main parts of the two can be selected as any of the following structural forms and mutual positional relationships: (1) The main part of the electric heating tube 1 is arranged in a spiral shape, and the main part of the metal water pipe 2 is arranged in a spiral shape or a folded-back shape; the inner diameter of the spiral shape of the main part of the electric heating tube 1 is larger than the maximum outer diameter of the main part of the metal water pipe 2, and the latter is nested and installed inside the former; (2) The main part of the metal water pipe 2 is arranged in a spiral shape, and the main part of the electric heating tube 1 is arranged in a spiral shape or a folded-back shape; the inner diameter of the spiral shape of the main part of the metal water pipe 2 is larger than the maximum outer diameter of the main part of the electric heating tube 1, and the latter is nested and installed inside the former; (3) The main parts of the electric heating tube 1 and the metal water pipe 2 are both arranged in a zigzag shape and have the same size, and the two are arranged adjacent to each other in the same direction.

[0032] During processing, the prefabricated electric heating tube 1 and metal water pipe 2 can be fixed in a mold with brackets, and then high-temperature aluminum liquid is used to form an integral structure through a die-casting process. The integral structure includes an aluminum casting enclosure 3 that completely wraps the outside of the electric heating tube 1 and the metal water pipe 2, and a fin structure 5 connected to the aluminum casting enclosure 3. The position of the fin structure 5 can be on any side of the aluminum casting enclosure 3, and can be specifically determined according to the internal space layout and installation method of the hot drink vending machine. Figure 1 In the product, the fin structure 5 is arranged below the aluminum casting enclosure 3.

[0033] For the purpose of achieving air heating, the heating structure further includes a duct (not shown in the figure) equipped with a fan, and the outlet of the duct is connected to an air guiding box body 4; the air guiding box body 4 is provided with an air inlet and an air outlet on opposite sides of the side surface, and the air inlet is connected to the outlet of the duct. The fin structure 5 is installed in the air guiding box body 4 through the upper opening of the air guiding box body 4, so that the air from the duct exchanges heat with the fin structure 5 in the cavity of the air guiding box body 4. As an installation example, the circumferential dimension of the fin structure 5 is smaller than that of the aluminum casting enclosure 4, and a step is formed between the lower edge of the aluminum casting enclosure 4 and the fin structure 5. The air guiding box body 4 is a metal air guiding box body and has a flange adapted to the step; when the fin structure 5 is installed in the air guiding box body 4, the lower edge of the aluminum casting enclosure 3 is in close contact with the flange of the air guiding box body 4. Screw holes are provided on the two opposite side surfaces of the air guiding box body 4 where the air inlet and the air outlet are not provided, and the aluminum casting enclosure 3 and the air guiding box body 4 are fixedly connected by screws.

[0034] As an essential configuration of the heating structure, an NTC assembly groove is provided on the surface of the aluminum casting enclosure 3 near the end of the metal water pipe 2, and the NTC component is fixedly installed in the NTC assembly groove by screwing or welding. A temperature control switch is provided on the surface of the aluminum casting enclosure 3, and the end of the electric heating pipe 1 and the temperature control switch are connected to an external power supply through wires to form a circuit. In this way, the temperature of the inlet and outlet water can be monitored through the controller of the device, and the power of the electric heating pipe 1 can be adjusted accordingly. When necessary, the power supply can also be turned off to protect the device. In order to achieve the controllability of air heating, a temperature measuring element is further provided at the outlet of the air guiding box body 4, and the temperature measuring element and the fan in the duct are connected to the controller of the device through wires to form a control circuit.

[0035] There are various forms of the fin structure 5 in this product Figure 2 The product adopts the form of a plurality of fins arranged in parallel and alternately, and each fin can be specifically selected as a straight structure or a zigzag structure. There are also various forms of the cooperation relationship between the fin structure 5 and the air guiding box body 4. For example: the air guiding box body 4 is a hollow structure, and the fin structure 5 is located in the inner cavity of the air guiding box body; or a plurality of flow disturbing pieces adapted to the fin layout are provided inside the air guiding box body 4, and each flow disturbing piece is arranged alternately with the adjacent fins and does not contact each other.

[0036] For the convenience of installation inside the vending machine, installation brackets are further provided on the outer parts of the air guiding box body 4, the fin structure 5 and the duct respectively, for realizing the fixed installation of the overall structure.

[0037] Based on the above structural design, the product of the present utility model has the following advantages compared with traditional products: (1) It can make full use of the heat conduction performance of the aluminum casting inclusion 3, and at the same time provide a stable heat source for sealing and unpacking and hot water brewing; (2) Using the fin structure to exchange heat with air, and cooperating with the directional air guiding of the air guiding box body 4, it can improve the heat exchange efficiency, accurately control the direction of the hot air outlet, and greatly reduce the heat loss; (3) Since the operations of water injection and unpacking have a sequential order and a very short time interval; therefore, the residual heat after heating water can be fully utilized to complete air heating, which is used to provide the hot air required for unpacking, greatly improving the energy utilization rate of the electric heating tube and reducing the heat loss and equipment energy consumption; (4) Only by replacing the mold of the aluminum casting inclusion in the traditional product can the manufacturing of the integrated structural part be completed, greatly reducing the production and assembly costs of product components.

[0038] In summary, through the improved structural design, the present utility model can achieve the functions realized by two sets of electric heating systems commonly used in existing models with only one electric heating system, and can greatly improve the utilization rate of the heating structure. The machine has been well optimized and improved in terms of overall energy consumption, internal installation space, comprehensive manufacturing cost, circuit control logic, equipment stability, etc.

Claims

1. A dual-functional heating structure for a hot drink vending machine, comprising an electric heating tube for heating and a metal water pipe for passing water, characterized in that, The main parts of the electric heating tube and the metal water pipe are both located inside an aluminum casting enclosure, and the aluminum casting enclosure is connected to a fin structure and they are an integral structure. The heating structure further includes an air duct equipped with a fan, and the air duct outlet is connected to a wind guiding box body; the side surface of the wind guiding box body is relatively provided with an air inlet and an air outlet, and the air inlet is connected to the air duct outlet; the fin structure is installed in the wind guiding box body through the upper opening of the wind guiding box body, so that the air from the air duct exchanges heat with the fin structure in the wind guiding box body; the ends of the electric heating tube and the metal water pipe both extend out of the aluminum casting body and are respectively used for connecting the power supply and the water inlet and outlet pipelines.

2. The dual-functional heating structure for a hot drink vending machine according to claim 1, characterized in that, The circumferential dimension of the fin structure is smaller than that of the aluminum casting enclosure, and a step is formed between the lower edge of the aluminum casting enclosure and the fin structure; the wind guiding box body is a metal wind guiding box body and has a flange adapted to the step; when the fin structure is installed in the wind guiding box body, the lower edge of the aluminum casting enclosure is in close contact with the flange of the wind guiding box body.

3. The dual-functional heating structure for a hot drink vending machine according to claim 1, characterized in that, Screw holes are provided on the two opposite side surfaces of the wind guiding box body where the air inlet and the air outlet are not provided, and the aluminum casting enclosure and the wind guiding box body are fixedly connected by screws.

4. The dual-functional heating structure for a hot drink vending machine according to claim 1, characterized in that, An NTC assembly groove is provided on the surface of the aluminum casting enclosure near the end of the metal water pipe, and an NTC component is fixedly installed in the NTC assembly groove by screwing or welding.

5. The dual-functional heating structure for a hot drink vending machine according to claim 1, wherein, A temperature control switch is provided on the surface of the aluminum casting enclosure, and the end of the electric heating tube and the temperature control switch are connected to an external power supply through wires to form a circuit.

6. The dual-functional heating structure for a hot drink vending machine according to claim 1, characterized in that, A temperature measuring element is provided at the air outlet of the wind guiding box body, and the temperature measuring element and the fan in the air duct are connected to an external controller through wires to form a control circuit.

7. The dual-functional heating structure for a hot drink vending machine according to claim 1, characterized in that, The fin structure has a plurality of fins arranged in parallel and at intervals, and each fin is in a straight structure or a zigzag structure.

8. The dual-functional heating structure for a hot drink vending machine according to claim 1, wherein, The wind guiding box body is a hollow structure, and the fin structure is located in the cavity inside the wind guiding box body; alternatively, a plurality of flow disturbing vanes adapted to the fin layout are provided inside the wind guiding box body, and each flow disturbing vane is arranged in an interleaved manner with the adjacent fin and does not contact each other.

9. The dual-functional heating structure for a hot drink vending machine according to claim 1, wherein Mounting brackets are respectively provided outside the fin structure, the wind guiding box body and the air duct for realizing fixed installation.

10. The dual-functional heating structure for a hot drink vending machine according to any one of claims 1 to 9, characterized in that, The main parts of the electric heating tube and the metal water pipe have any one of the following structural forms and mutual positional relationships: (1) The main part of the electric heating tube is arranged in a spiral shape, and the main part of the metal water pipe is arranged in a spiral shape or a folded-back shape; the inner diameter of the spiral shape of the main part of the electric heating tube is larger than the maximum outer diameter of the main part of the metal water pipe, and the latter is nested and installed inside the former. (2) The main part of the metal water pipe is arranged in a spiral shape, and the main part of the electric heating tube is arranged in a spiral shape or a folded-back shape; the inner diameter of the spiral shape of the main part of the metal water pipe is larger than the maximum outer diameter of the main part of the electric heating tube, and the latter is nested and installed inside the former. (3) The main parts of the electric heating tube and the metal water pipe are both arranged in a zigzag shape and have the same size, and the two are arranged adjacent to each other in the same direction.

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