Coffee machine with pressure regulating device

Abstract

The utility model discloses a coffee machine with a pressure regulating device, which comprises a main body, a water pump and a boiler, the water pump can pump water and convey the water into the boiler, and the boiler can heat the water conveyed by the water pump; the device comprises a main body, and further comprises a machine head, an extractor and a pressure regulating device, the machine head is connected to the front end of the main body, the extractor is connected to the lower portion of the machine head, the machine head comprises a shell and a control panel arranged on the upper portion of the shell, and the pressure regulating device is arranged in the shell and located between the control panel and the extractor. The pressure regulating device is used for regulating the pressure in the pipeline; by arranging the pressure regulating device, the extractor and the control panel can be effectively separated by the pressure regulating device, so that the control panel can be protected.

Description

Technical Field

[0001] The utility model relates to the technical field related to coffee machines, and in particular to a coffee machine with a pressure regulating device. Background Art

[0002] With the continuous improvement of people's quality of life, coffee machines have gradually become popular and have become a common small household appliance in the daily lives of the general public. Pressure coffee machines, a key subcategory within this category, are increasingly popular due to their high extraction pressure. The resulting coffee is not only rich in flavor, oil, and flavor, but also contains more flavor compounds. However, for ease of operation, the extraction and control components of pressure coffee machines are typically located at the front of the machine, with the control components often concentrated above the extraction component. To achieve optimal coffee extraction and maximize flavor compounds, the extraction temperature is generally required to be between 90° and 96°C. With continuous use, the temperature of the extraction component gradually increases, and due to the distance between the control components and the extraction component, the temperature of the control components also increases. Operating at high temperatures can accelerate the aging of some electronic components, leading to unstable performance and even breakdown and burnout. To address this issue, existing technologies generally use more weather-resistant electronic components or add protective heat shields to protect the electronic components, but this can increase product costs. Utility Model Content

[0003] The purpose of the present invention is to solve the above problems. In view of the defects and shortcomings of the existing technology, in order to solve the problem of the temperature increase of the control components due to heating, the present invention provides a coffee machine with a pressure regulating device, comprising a main body, a water pump and a boiler, the water pump and the boiler are arranged in the main body, the water pump and the boiler are connected together by a second delivery pipe, the water pump can deliver water to the boiler, and the boiler can heat the water delivered by the water pump; it also includes a machine head and an extractor, the machine head is connected to the front end of the main body, the extractor is connected to the lower part of the machine head, the boiler and the extractor are connected together by a third delivery pipe, and the boiler heats the water. Water can be delivered to the extractor through the third delivery pipe; it also includes a first branch pipe, a return branch pipe and a pressure regulating device, the first branch pipe connects the water inlet of the pressure regulating device and the second delivery pipe, the return branch pipe is connected to the water outlet of the pressure regulating device, when the pressure value in the second delivery pipe is greater than the set pressure relief valve value of the pressure regulating device, part of the cold water in the second delivery pipe flows to the outside of the pressure regulating device through the first branch pipe, the pressure regulating device and the return branch pipe, thereby adjusting the pressure of the delivery pipeline; the head includes a shell and a control panel arranged on the upper part of the shell, and the pressure regulating device is arranged in the shell and located between the control panel and the extractor.

[0004] The water flowing through the pressure regulating device flows outward from the return branch pipe to the outside of the pressure regulating device. Specific implementation methods include the following: the first one further includes a water tank, the water pump and the water tank are connected together by a first delivery pipe, and the water pump can pump water from the water tank and deliver it to the outside; one end of the return branch pipe is connected to the water tank so that the water passing through the pressure regulating device flows back into the water tank. The second one further includes a waste water tank, and the return branch pipe is connected to the waste water tank so that the water passing through the pressure regulating device flows into the waste water tank. The third one is that the return branch pipe extends to the outside of the coffee machine, so that the water passing through the pressure regulating device flows directly to the outside of the coffee machine.

[0005] Preferably, a heat insulating layer is further included, and the heat insulating layer is arranged between the pressure regulating device and the extractor. The provision of the heat insulating layer can further effectively reduce the influence of the heat emitted by the heating device on the control panel.

[0006] Preferably, the boiler is arranged close to the front side wall of the main body, the shell has a shell cavity, and a vertical plate is arranged upright in the shell cavity. The vertical plate divides the shell cavity into a front cavity and a rear cavity. The rear cavity is close to the front side wall of the main body, and the pressure regulating device is arranged in the front cavity.

[0007] Preferably, the pressure regulating device includes a pressure regulating valve body, which has a pressure regulating chamber and a water inlet channel and a pressure relief channel connected to the pressure regulating chamber, and also includes a pressure regulating valve core, a pressure regulating spring and an adjusting screw cover. The pressure regulating spring is arranged between the pressure regulating valve core and the adjusting screw cover. Under the action of the pressure regulating spring, the pressure regulating valve core can block the water inlet channel, and the distance between the pressure regulating valve core and the adjusting handle can be adjusted by rotating the adjusting screw cover, thereby adjusting the pressure applied to the pressure regulating valve core by the pressure regulating spring, that is, adjusting the pressure relief threshold of the pressure regulating device; and also includes a water tank, and part of the cold water in the second delivery pipe can flow back to the water tank through the first branch pipe, the water inlet channel, the pressure regulating chamber, the pressure relief channel and the reflux branch pipe in sequence.

[0008] Preferably, the pressure regulating device further comprises a pressure regulating handle, and an elongated regulating through hole is provided on the housing, and the pressure regulating handle can pass through the regulating through hole from outside to inside and be connected to the regulating screw cover.

[0009] Preferably, it further comprises a blocking piece, which is arranged on the inner side of the adjusting through hole and spaced apart from the adjusting through hole, and the blocking piece is connected to the pressure regulating handle and can move back and forth with the pressure regulating handle.

[0010] Preferably, the pressure regulating device can be steplessly adjusted within a pressure relief threshold range of 2 bar to 12 bar.

[0011] Preferably, a protection valve is further included, which is connected to the or the second delivery pipe, and the pressure relief threshold of the protection valve is 9 bar to 15 bar.

[0012] Preferably, a hot water pipe assembly is further included, wherein the hot water pipe assembly is connected to the front end of the main body and is located below the extractor.

[0013] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By arranging the pressure regulating device between the extractor and the control panel, the pressure regulating device can effectively separate the extractor and the control panel, and effectively reduce the adverse effects of the heat emitted by the extractor on the electronic components of the control panel; in addition, the water inlet channel of the pressure regulating device is connected to the first delivery pipe, and the pressure relief channel is connected to the water tank, that is, the cold water in the water tank flows through the pressure regulating device, so the pressure regulating device can not only adjust the extraction pressure of the coffee machine, but also use the cold water flowing through the pressure regulating device to take away the heat emitted by the extractor, further reducing the temperature inside the machine head, which is conducive to better protecting the electronic components of the control panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the coffee machine;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of a coffee machine;

[0016] Figure 3 yes Figure 2 Schematic diagram of the partially enlarged structure at K in the middle;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the voltage regulating device. DETAILED DESCRIPTION

[0018] The present invention is further described below with reference to the accompanying drawings. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0019] For ease of description, spatially relative terms such as “under,” “beneath,” “down,” “over,” and the like may be used herein to describe the relationship of one element or feature to another element or feature(s) as shown in the figures. It will be understood that when an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, it can be directly on, directly connected to, or coupled to the other element or layer, or intervening elements or layers may be present.

[0020] like Figures 1 to 3 As shown, a coffee machine with a pressure regulating device 7 includes a main body 1, a water tank 2, a water pump 3 and a boiler 4, the water pump 3 and the boiler 4 are arranged in the main body 1, the water pump 3 and the water tank 2 are connected together by a first delivery pipe 101, the water pump 3 and the boiler 4 are connected together by a second delivery pipe 102, the water pump 3 can pump water from the water tank 2 and deliver the water to the boiler 4, and the boiler 4 can heat the water delivered by the water pump 3; it also includes a head 5 and an extractor 6, the head 5 is connected to the front end of the main body 1, the extractor 6 is connected to the lower part of the head 5, the boiler 4 and the extractor 6 are connected together by a third delivery pipe 103, and the water heated by the boiler 4 can be delivered to the boiler 4 through the third delivery pipe 103. The extractor 6 also includes a first branch pipe 104, a reflux branch pipe 105 and a pressure regulating device 7, wherein the first branch pipe 104 is connected to the water inlet of the pressure regulating device 7 and the second delivery pipe 102, and the reflux branch pipe 105 is connected to the water outlet of the pressure regulating device 7 and the water tank 2. When the pressure value in the second delivery pipe 102 is greater than the set pressure relief valve value of the pressure regulating device 7, part of the cold water in the second delivery pipe 102 flows back to the water tank 2 through the first branch pipe 104, the pressure regulating device 7 and the reflux branch pipe 105, thereby adjusting the pressure of the delivery pipeline; the head 5 includes a shell 51 and a control panel 52 arranged on the upper part of the shell 51, and the pressure regulating device 7 is arranged in the shell 51 and is located between the control panel 52 and the extractor 6.

[0021] In other equivalent embodiments, a wastewater tank (not shown) is further included, and the return branch pipe 105 is connected to the wastewater tank, allowing the water passing through the pressure regulating device 7 to flow into the wastewater tank. Alternatively, the return branch pipe 105 extends to the exterior of the coffee machine, so that the water passing through the pressure regulating device 7 flows directly to the exterior of the coffee machine.

[0022] Preferably, a heat insulating layer 8 is further included, and the heat insulating layer 8 is arranged between the pressure regulating device 7 and the extractor 6. The provision of the heat insulating layer 8 can further effectively reduce the influence of the heat emitted by the heating device on the control panel 52.

[0023] Preferably, the boiler 4 is positioned near the front sidewall 11 of the main body 1, the housing 51 has a housing cavity, and a vertical plate 53 is disposed within the cavity of the machine head 5. The vertical plate 53 divides the housing cavity into a front cavity and a rear cavity. The rear cavity is positioned near the front sidewall 11 of the main body 1, and the pressure regulating device 7 is disposed in the front cavity. The separation of the rear cavity can reduce the impact of heat emitted by the boiler 4 on the control panel 52.

[0024] like Figure 1 、 Figure 3 and Figure 4 As shown, the pressure regulating device 7 includes a pressure regulating valve body 71, which has a pressure regulating chamber 70 and a water inlet channel 72 and a pressure relief channel 73 connected to the pressure regulating chamber 70. The pressure regulating device 7 also includes a pressure regulating valve core 74, a pressure regulating spring 75 and an adjusting screw cover 76. The pressure regulating spring 75 is arranged between the pressure regulating valve core 74 and the adjusting screw cover 76. Under the action of the pressure regulating spring 75, the pressure regulating valve core 74 can block the water inlet channel 72. By rotating the adjusting screw cover 76, the distance between the pressure regulating valve core 74 and the adjusting handle can be adjusted, thereby adjusting the pressure applied to the pressure regulating valve core 74 by the pressure regulating spring 75, that is, adjusting the pressure relief threshold of the pressure regulating device 7; part of the cold water in the second delivery pipe 102 can flow back to the water tank 2 through the first branch pipe 104, the water inlet channel 72, the pressure regulating chamber 70, the pressure relief channel 73 and the reflux branch pipe 105 in sequence.

[0025] Preferably, the pressure regulating device 7 further includes a pressure regulating handle 77 . An elongated regulating through hole 54 is provided on the housing 51 . The pressure regulating handle 77 can pass through the regulating through hole 54 from outside to inside and be connected to the regulating screw cover 76 .

[0026] Preferably, a baffle 78 is further included, which is arranged on the inner side of the adjusting through hole 54 and spaced apart from the adjusting through hole 54 . The baffle 78 is connected to the pressure regulating handle 77 and can move back and forth with the pressure regulating handle 77 .

[0027] Preferably, the pressure regulating device 7 can be steplessly adjusted within a pressure relief threshold range of 2 bar to 12 bar.

[0028] Preferably, a protection valve 9 is further included, which is connected to the second delivery pipe 102, and the pressure relief threshold of the protection valve 9 is 9 bar to 15 bar.

[0029] Preferably, it further includes a hot water pipe assembly 106 , which is connected to the front end of the main body 1 and located below the extractor 6 , and is connected to the boiler 4 .

[0030] Compared to the prior art, the present invention offers significant advantages and beneficial effects. By disposing the pressure-regulating device 7 between the extractor 6 and the control panel 52, it effectively isolates the extractor 6 from the control panel 52, effectively reducing the adverse effects of heat generated by the extractor 6 on the electronic components of the control panel 52. Furthermore, the water inlet channel 72 of the pressure-regulating device 7 is connected to the first delivery pipe 101, and the pressure-relief channel 73 is connected to the water tank 2. Therefore, the pressure-regulating device 7 not only adjusts the coffee machine's extraction pressure but also utilizes the cold water flowing through it to remove heat generated by the extractor 6, further reducing the temperature within the machine head 5 and better protecting the electronic components of the control panel 52.

[0031] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and any modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience of description only and do not constitute any limitation to the present invention.

Claims

1. A coffee machine with a pressure regulating device, comprising a main body, a water pump, and a boiler, wherein the water pump and boiler are disposed in the main body and are connected to the boiler via a second delivery pipe. The water pump can deliver water to the boiler, and the boiler can heat the water delivered by the water pump. It also includes a machine head and an extractor, the machine head is connected to the front end of the main body, the extractor is connected to the lower part of the machine head, the boiler and the extractor are connected together by a third delivery pipe, and the water heated by the boiler can be delivered to the extractor through the third delivery pipe; it also includes a first branch pipe, a return branch pipe and a pressure regulating device, the first branch pipe connects the water inlet of the pressure regulating device and the second delivery pipe, the return branch pipe is connected to the water outlet of the pressure regulating device, when the pressure value in the second delivery pipe is greater than the set pressure relief valve value of the pressure regulating device, part of the cold water in the second delivery pipe flows to the outside of the pressure regulating device through the first branch pipe, the pressure regulating device and the return branch pipe, thereby adjusting the pressure of the delivery pipeline; the machine head includes a shell and a control panel arranged on the upper part of the shell, and the pressure regulating device is arranged in the shell and located between the control panel and the extractor.

2. The coffee machine with a pressure regulating device according to claim 1, characterized in that: It also includes a heat insulation layer, which is arranged between the pressure regulating device and the extractor.

3. The coffee machine with a pressure regulating device according to claim 1, characterized in that: The boiler is arranged near the front side wall of the main body, the shell has a shell cavity, and a vertical plate is arranged upright in the shell cavity. The vertical plate divides the shell cavity into a front cavity and a rear cavity. The rear cavity is close to the front side wall of the main body, and the pressure regulating device is arranged in the front cavity.

4. The coffee machine with a pressure regulating device according to claim 1, characterized in that: The pressure regulating device includes a pressure regulating valve body, which has a pressure regulating chamber and a water inlet channel and a pressure relief channel connected to the pressure regulating chamber. It also includes a pressure regulating valve core, a pressure regulating spring and an adjusting screw cover. The pressure regulating spring is arranged between the pressure regulating valve core and the adjusting screw cover. Under the action of the pressure regulating spring, the pressure regulating valve core can block the water inlet channel. By rotating the adjusting screw cover, the distance between the pressure regulating valve core and the adjusting handle can be adjusted, thereby adjusting the pressure applied to the pressure regulating valve core by the pressure regulating spring, that is, adjusting the pressure relief threshold of the pressure regulating device; it also includes a water tank, and part of the cold water in the second delivery pipe can flow back to the water tank through the first branch pipe, the water inlet channel, the pressure regulating chamber, the pressure relief channel and the reflux branch pipe in sequence.

5. The coffee machine with a pressure regulating device according to claim 4, characterized in that: The pressure regulating device further comprises a pressure regulating handle. An elongated regulating through hole is provided on the housing. The pressure regulating handle can pass through the regulating through hole from outside to inside and be connected to the regulating screw cover.

6. The coffee machine with a pressure regulating device according to claim 5, characterized in that: It also includes a blocking piece, which is arranged on the inner side of the adjusting through hole and spaced apart from the adjusting through hole. The blocking piece is connected to the pressure regulating handle and can move back and forth with the pressure regulating handle.

7. The coffee machine with a pressure regulating device according to claim 5, characterized in that: The pressure regulating device can be steplessly adjusted within a pressure relief threshold range of 2 bar to 12 bar.

8. The coffee machine with a pressure regulating device according to claim 7, characterized in that: It also includes a protection valve connected to the second delivery pipe, and the pressure relief threshold of the protection valve is 9 bar to 15 bar.

9. The coffee machine with a pressure regulating device according to any one of claims 1 to 8, characterized in that: The utility model further comprises a hot water pipe assembly, which is connected to the front end of the main body and is located below the extractor.

10. The coffee machine with a pressure regulating device according to claim 9, characterized in that: It also includes a water tank, and the water pump and the water tank are connected together through a first delivery pipe. The water pump can pump water from the water tank and deliver it outward; one end of the return branch pipe is connected to the water tank so that the water passing through the pressure regulating device can flow back into the water tank.

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