Frost crack prevention device, coffee machine boiler and coffee machine

Abstract

The utility model provides a frost crack prevention device, a coffee machine boiler and a coffee machine, the frost crack prevention device is applied to the coffee machine boiler, the device comprises a connector body, and a water passing opening, a connecting opening and a pressure relief opening which are communicated with one another are formed in the connector body; the connector is used for connecting a water inlet / outlet pipe of a boiler; a containing cavity is formed in one end of the connector body and communicates with the pressure relief opening. The containing cavity is used for being coaxially communicated with a water inlet and outlet pipe of the boiler. A piston and an elastic piece are arranged in the containing cavity in a sealed mode, and the piston blocks the pressure relief opening under the action of the elastic piece. The frost crack prevention device is simple in structure, the containing cavity is coaxially communicated with the boiler water inlet and outlet pipe, water directly enters the containing cavity after volume expansion after icing, and the connector body is prevented from being damaged.

Description

Technical Field

[0001] This disclosure relates to the field of coffee machine anti-freezing and cracking technology, and more particularly to an anti-freezing and cracking device, a coffee machine boiler, and a coffee machine. Background Technology

[0002] The coffee machine anti-freeze crack device is a protective device designed to prevent damage to the equipment caused by the water inside the coffee machine freezing and expanding in low-temperature environments.

[0003] In the prior art, Chinese Patent Publication No. CN204153368U discloses an antifreeze connector in which the water inlet pipe and the cavity for containing the ice that expands in volume after freezing are perpendicularly intersecting. In low-temperature environments, the water in the direction of the water inlet pipe freezes and expands in volume. Since the outlet for the ice expansion and the ice cavity are perpendicular, the side of the cavity is subjected to force, which may damage the ice cavity.

[0004] The boiler in a coffee machine is a core component that ensures the quality and stability of coffee extraction. Its main function is to heat and maintain the water temperature to ensure proper coffee extraction. Currently, there is no anti-freeze device in the coffee machine boiler to protect it from freezing and cracking in low-temperature environments. Utility Model Content

[0005] The purpose of this disclosure is to provide an anti-freezing and cracking device, a coffee machine boiler, and a coffee machine, thereby solving the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the technical solutions adopted in the embodiments of this disclosure are as follows:

[0007] This disclosure provides an anti-freezing and cracking device, which includes: a connector body, wherein the connector body is provided with a water inlet, a connection port and a pressure relief port that are interconnected; the connection port is used to connect to the inlet and outlet water pipes of a boiler;

[0008] The connector body has a receiving cavity at one end, which is connected to the pressure relief port; the receiving cavity is used to be coaxially connected to the inlet and outlet water pipes of the boiler.

[0009] The cavity is sealed with a piston and an elastic element, and the piston blocks the pressure relief port under the action of the elastic element.

[0010] For example, the connector body is provided with a water passage, and the connection port and the pressure relief port are connected through the water passage; the water passage is located in the central area of ​​the water passage.

[0011] For example, the piston is located near the pressure relief port, and a sealing head is provided at one end of the piston for sealing the pressure relief port;

[0012] A stop block is also provided inside the receiving cavity, and the two ends of the elastic element abut against the piston and the stop block respectively.

[0013] For example, the elastic element is a spring; a protrusion is provided at the other end of the piston, and a connecting block is provided at the end of the stop block facing the piston;

[0014] The two ends of the spring are respectively sleeved on the protrusion and the connecting block;

[0015] The side wall of the stop block is provided with external threads, the receiving cavity is provided with internal threads, and the stop block and the receiving cavity are connected by threads in the receiving cavity.

[0016] For example, a groove is provided in the central circumferential region of the piston sidewall, and a sealing ring is provided in the groove.

[0017] For example, the device further includes a connector water pipe, which is disposed on the side wall of the connector body. The axial hollow portion of the connector water pipe is the connector water outlet, and the water outlet is connected to the connector water pipe.

[0018] For example, the connector water pipe is uniformly provided with multiple reinforcing ribs around its circumference. The reinforcing rib is a right-angled triangular plate, with one right-angled side provided on the side wall of the connector water pipe and the other right-angled side provided on the side wall of the connector body.

[0019] Another aspect of this disclosure provides a coffee machine boiler, including a boiler body, inlet and outlet water pipes, and an anti-freezing and cracking device as described above. One end of the inlet and outlet water pipes is connected to the water storage chamber inside the boiler body, and the other end of the inlet and outlet water pipes is sealed to the connection port of the connector body.

[0020] For example, the other end of the inlet and outlet water pipe is circumferentially spaced with a first mounting block and a second mounting block, and the other end of the inlet and outlet water pipe is used to be inserted into a connecting pipe that communicates with the connection port.

[0021] The first mounting block is away from the boiler body, and the other end of the inlet and outlet water pipe is fitted with a sealing element on the side of the first mounting block away from the boiler body;

[0022] The first mounting block and the second mounting block are used to be inserted into the connecting pipe.

[0023] Another aspect of this disclosure provides a coffee machine including a boiler as described above.

[0024] The beneficial effects of the embodiments disclosed herein are:

[0025] The anti-freezing and cracking device of this embodiment has a simple structure and is easy to disassemble and assemble. The receiving cavity in the connector body is coaxial with the boiler inlet and outlet water pipes. The direction of water expansion when it freezes is the same as the extension direction of the receiving cavity, so it can directly enter the receiving cavity and protect the connector body. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a boiler structure with an anti-freezing and cracking device according to an embodiment of this disclosure;

[0027] Figure 2 This is a schematic diagram of the disassembly structure of a boiler with an anti-freezing and cracking device according to an embodiment of this disclosure;

[0028] Figure 3 yes Figure 1 A cross-sectional view along direction AA, where the arrows indicate the direction of water flow;

[0029] Figure 4 yes Figure 1 A cross-sectional view along the AA direction, where the arrows indicate the direction of ice expansion after freezing, and the piston position indicates the piston being squeezed and moved by the freezing of water in the waterway.

[0030] In the picture,

[0031] 1. Connector body; 11. Connection port; 12. Water pipe; 13. Receiving cavity; 14. Pressure relief port; 15. Water inlet; 2. Sealing ring; 3. Piston; 31. Sealing head; 4. Elastic element; 5. Stop block; 6. Sealing element; 7. Boiler body; 71. Water passage; 8. Inlet and outlet water pipes; 81. First mounting block; 82. Second mounting block; 9. Connector water pipe. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of this disclosure and are not intended to limit the embodiments of this disclosure.

[0033] like Figures 1 to 4 As shown, one embodiment of this disclosure proposes an anti-freezing and cracking device for use in a coffee machine boiler. The device includes: a connector body 1, which has a water inlet 15, a connection port 11, and a pressure relief port 14 that are interconnected; the connection port 11 is used to connect to the boiler's inlet and outlet water pipes 8; one end of the connector body 1 is provided with a receiving cavity 13, which is connected to the pressure relief port 14; the receiving cavity 13 is used to coaxially connect with the boiler's inlet and outlet water pipes 8; a piston 3 and an elastic element 4 are sealed inside the receiving cavity 13, and the piston 3 blocks the pressure relief port 14 under the action of the elastic element 4.

[0034] The anti-freezing and cracking device of this embodiment has a connector body 1 with a cavity for accommodating the volume expansion of ice at the inlet and outlet water ends of the boiler. Water flows out through the boiler inlet and outlet water pipes and the connector's water passage hole. When the coffee machine boiler is in a sub-zero environment, the water inside the boiler freezes and expands in volume. Specifically, the ice in the boiler inlet and outlet water pipes expands axially along the inlet and outlet water pipes. Since the boiler inlet and outlet water pipes and the cavity of the connector body are coaxially connected, the expansion of the water in the inlet and outlet water pipes through the connection port and pressure relief port squeezes the piston. The piston moves away from the pressure relief port, and the ice enters the cavity, preventing damage to the connector body from freezing. At room temperature, the piston blocks the pressure relief port, preventing water from flowing out of the cavity. The other end of the connector body is provided with a connecting pipe, which is connected to the connection port. The boiler inlet and outlet water pipes are sealed in the connecting pipe. The directional dimension of the water passage pipe is smaller than the radial dimension of the connecting pipe and the cavity, respectively, and the radial dimension of the cavity is larger than the directional dimension of the connecting pipe. The housing, connecting pipes, and inlet / outlet water pipes are coaxial.

[0035] The anti-freezing and cracking device of this embodiment has a simple structure. The receiving cavity of the connector body and the connecting pipe are coaxially arranged with the boiler inlet and outlet water pipes. The direction of water freezing expansion is the same as the extension direction of the receiving cavity of the connector body, which can effectively accommodate the volume of water freezing expansion and protect the connector body.

[0036] like Figure 3 and Figure 4 As shown, as a specific example of a water inlet, the connector body 1 is provided with a water inlet pipe 12, and the connection port 11 and the pressure relief port 14 are connected through the water inlet pipe 12; the water inlet 15 is located in the central area of ​​the water inlet pipe 12.

[0037] The water passage, the receiving cavity, and the inlet and outlet water pipes are all coaxial.

[0038] like Figure 2 and Figure 3 As shown, the piston 3 is close to the pressure relief port 14, and a sealing head 31 is provided at one end of the piston 3. The sealing head 31 is used to block the pressure relief port 14. A stop block 5 is also provided in the receiving cavity 13. The two ends of the elastic member 4 abut against the piston 3 and the stop block 5 respectively.

[0039] The sealing head 31 is inserted into the pressure relief port to block the water pipe 12. The piston can move within the receiving cavity. Under the action of the elastic element, the piston can open or close the pressure relief port. When the water in the inlet and outlet pipes freezes and expands, the ice blocks squeeze the piston 3, compressing the elastic element. The piston 3 moves to the left, that is, away from the pressure relief port. The ice blocks enter the receiving cavity and are placed in the receiving cavity 13 without damaging the main connector 1. The main connector body can be a cylindrical structure.

[0040] like Figure 3and Figure 4 As shown, the elastic element is a spring; a protrusion is provided at the other end of the piston 3, and a connecting block is provided at the end of the stop block 5 facing the piston; the two ends of the spring are respectively sleeved on the protrusion and the connecting block; the side wall of the stop block 5 is provided with external threads, the receiving cavity 13 is provided with internal threads, and the stop block 5 and the receiving cavity 13 are connected by threads in the receiving cavity 13.

[0041] The stop block is detachably installed in the receiving cavity via a thread, and can also move within the receiving cavity to adjust the piston's pressure-bearing capacity.

[0042] like Figure 3 and Figure 4 As shown, as a specific example of a piston, the piston 3 has a groove in the central area of ​​its sidewall circumferential direction, and a sealing ring 2 is disposed in the groove.

[0043] The piston is equipped with a sealing ring, which can seal the receiving cavity and prevent water from flowing out of the receiving cavity.

[0044] like Figure 1 and Figure 2 As shown, the device also includes a connector water pipe 9, which is disposed on the side wall of the connector body 1. The axial hollow part of the connector water pipe 9 is the connector water outlet, and the water outlet 15 is connected to the connector water pipe 9.

[0045] The connector water pipe is used to connect to a coffee brewing unit or a milk frothing device.

[0046] like Figure 1 and Figure 2 As shown, as a specific example of a connector water pipe, the connector water pipe is uniformly provided with multiple reinforcing ribs around its circumference. The reinforcing rib is a right-angled triangular plate, with one right-angled side provided on the side wall of the connector water pipe and the other right-angled side provided on the side wall of the connector body.

[0047] The reinforcing ribs increase the structural strength of the water pipe in the joint. The joint body is equipped with a connecting pipe, which is connected to the connection port.

[0048] During normal operation, water flows from the boiler water pipe 71 to the connector water pipe 9. The ice-containing cavity contains a piston 3 and a piston seal ring. Under the action of the piston spring, the normal operating water pressure cannot move the piston. The connector body 1 has an ice-containing cavity. When the coffee machine boiler is in a sub-zero environment, the water inside the boiler freezes and expands. The cavity of the connector body 1 is coaxially connected to the boiler's inlet and outlet water pipes, allowing the ice to flow smoothly from the boiler water pipe through the pressure relief port 14, squeezing the piston 3 and compressing the elastic element 4. The piston 3 moves to the left, and the ice is placed in the cavity 13, thus preventing damage to the connector body 1.

[0049] like Figure 2 As shown, another aspect of this disclosure provides a coffee machine boiler, including a boiler body 7, inlet and outlet water pipes 8, and an anti-freezing and cracking device as described above. One end of the inlet and outlet water pipes 8 is connected to the water storage chamber inside the boiler body 7, and the other end of the inlet and outlet water pipes 8 is sealed to the connection port of the connector body 1.

[0050] like Figure 2 As shown, the other end of the inlet and outlet water pipe 8 is circumferentially spaced with a first mounting block 81 and a second mounting block 82. The other end of the inlet and outlet water pipe 8 is used to insert into a connecting pipe that communicates with the connection port. The first mounting block 81 is away from the boiler body 7. The other end of the inlet and outlet water pipe 8 is fitted with a sealing element 6 on the side of the first mounting block 81 away from the boiler body 7. The first mounting block 81 and the second mounting block 82 are used to insert into the connecting pipe.

[0051] The sealing element may be a circular sealing ring.

[0052] Another aspect of this disclosure provides a coffee machine, including the boiler described above.

[0053] The above description is only a preferred embodiment of the present disclosure. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present disclosure, and these improvements and modifications should also be considered within the protection scope of the present disclosure.

Claims

1. An anti-freezing and cracking device, applied to a coffee machine boiler, characterized in that, The device includes: The connector body (1) is provided with interconnected water inlet (15), connection port (11) and pressure relief port (14); the connection port (11) is used to connect the inlet and outlet water pipes (8) of the boiler. The connector body (1) has a receiving cavity (13) at one end, which is connected to the pressure relief port (14); the receiving cavity (13) is used to be coaxially connected to the inlet and outlet water pipes (8) of the boiler. The cavity (13) is sealed with a piston (3) and an elastic element (4), and the piston (3) blocks the pressure relief port (14) under the action of the elastic element (4).

2. The anti-freezing and cracking device according to claim 1, characterized in that, The piston (3) is close to the pressure relief port (14), and a sealing head (31) is provided at one end of the piston (3). The sealing head (31) is used to block the pressure relief port (14). The cavity (13) is also provided with a stop (5), and the two ends of the elastic member (4) abut against the piston (3) and the stop (5) respectively.

3. The anti-freezing and cracking device according to claim 2, characterized in that, The elastic element is a spring; a protrusion is provided at the other end of the piston (3), and a connecting block is provided at the end of the stop block (5) facing the piston (3); The two ends of the spring are respectively sleeved on the protrusion and the connecting block; The side wall of the stop block (5) is provided with an external thread, and the receiving cavity (13) is provided with an internal thread. The stop block (5) and the receiving cavity (13) are connected by a thread in the receiving cavity.

4. The anti-freezing cracking device according to any one of claims 1 to 3, characterized in that, The piston (3) has a groove in the central area of ​​its side wall, and a sealing ring (2) is provided in the groove.

5. The anti-freezing cracking device according to any one of claims 1 to 3, characterized in that, The connector body is provided with a water passage (12), and the connection port (11) and the pressure relief port (14) are connected through the water passage (12); the water outlet (15) is located in the central area of ​​the water passage.

6. The anti-freezing cracking device according to claim 5, characterized in that, The device also includes a connector water pipe (9), which is disposed on the side wall of the connector body (1). The axial hollow part of the connector water pipe (9) is the connector water outlet, and the water outlet (15) is connected to the connector water pipe (9).

7. The anti-freezing and cracking device according to claim 6, characterized in that, The connector's water pipe is evenly provided with multiple reinforcing ribs around its circumference. Each reinforcing rib is a right-angled triangular plate, with one right-angled side located on the side wall of the connector's water pipe and the other right-angled side located on the side wall of the connector body.

8. A coffee machine boiler, characterized in that, It includes a boiler body (7), inlet and outlet water pipes (8), and an anti-freezing and cracking device as described in any one of claims 1 to 7. One end of the inlet and outlet water pipes (8) is connected to the water storage chamber inside the boiler body (7), and the other end of the inlet and outlet water pipes (8) is sealed to the connection port of the connector body (1).

9. The boiler according to claim 8, characterized in that, The other end of the inlet and outlet water pipe (8) is provided with a first mounting block (81) and a second mounting block (82) spaced apart circumferentially, and the other end of the inlet and outlet water pipe (8) is used to be inserted into a connecting pipe that communicates with the connection port; The first mounting block (81) is away from the boiler body (7), and the other end of the inlet and outlet water pipe (8) is fitted with a sealing element (6) on the side of the first mounting block (81) away from the boiler body (7); The first mounting block (81) and the second mounting block (82) are used to be inserted into the connecting pipe.

10. A coffee machine, characterized in that, Includes the boiler described in claim 8 or 9.

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