Variable pressure valve adjusting mechanism and coffee machine using same
By designing a transformer valve adjustment mechanism including valve body, valve core, adjustment stud and adjustment connecting rod, the problem of low operating efficiency of existing coffee machines is solved, and more intuitive extraction pressure adjustment and improve coffee production efficiency is achieved.
Patent Information
- Application Number
- CN202422321315.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-24
AI Technical Summary
When making coffee, existing coffee machines need to pay attention to the water temperature and pressure at the same time, and need to adjust the transformer valve in time, resulting in inefficient operation.
A transformer valve adjustment mechanism is designed, including valve body, valve core, valve core spring, adjustment stud, adjustment connecting rod, positioning plate, positioning column and positioning spring. Through the coordination of the adjustment stud and the adjustment connecting rod, the pressure between the valve core and positioning column is synchronized and increased or decreased. Users can intuitively adjust the extraction pressure by sensing the magnitude of the rotation force by hand.
Through the transformer valve adjustment mechanism, the user can more intuitively perceive and adjust the extraction pressure, reduce the number of visual confirmations, and improve the efficiency of coffee making.
Smart Images
Figure CN223035791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coffee machines, in particular to a pressure regulating valve adjusting mechanism and a coffee machine applying the same. Background Art
[0002] As a household appliance for making coffee, the coffee machine is a very popular product among foreign household kitchen appliances. Moreover, with the improvement of people's living quality in China, more and more people begin to accept and use coffee machine products. Among them, the pressure coffee machine is a very important type of coffee machine product, because it can quickly generate high-temperature and high-pressure water and steam, which is very suitable for making Italian espresso. However, the existing coffee machine products on the market are basically single-pressure controlled, which is fixed when the coffee machine products leave the factory. The single pressure has great limitations for the extraction of coffee flavor substances, because for coffee powders with different origins, different roasting depths and different particle sizes, water with different pressures and temperatures is required to release the coffee flavor substances during the extraction process. For this reason, people have developed a pressure regulating valve that can adjust the pressure and applied it to coffee machine products. However, when using it, people need to pay attention to the water temperature and pressure at the same time, and also adjust the pressure regulating valve in a timely manner. When making coffee at a fast pace, if the position is adjusted only by eyes, the production efficiency will be affected. Content of the Utility Model
[0003] In view of the defects and deficiencies existing in the prior art, in order to improve the efficiency of coffee making and make full use of the visual and perceptual abilities of eyes and hands, the utility model provides a pressure regulating valve adjusting mechanism, which includes a valve body. The valve body includes a valve body cavity, an installation port, a water inlet and a water outlet communicating with the valve body cavity. It further includes a valve core, a valve core spring and an adjusting stud. The valve core and the valve core spring are arranged in the valve body cavity. The adjusting stud is rotatably connected in the installation port. Two ends of the valve core spring are respectively pressed against the valve core and the adjusting stud. Under the action of the valve core spring, the valve core is pressed against the water inlet. It further includes an adjusting connecting rod, a positioning plate, a positioning column and a positioning spring. The head end of the adjusting connecting rod can be sleeved on the adjusting stud. A positioning hole with a downward opening is arranged on the adjusting connecting rod. The positioning spring and at least part of the positioning column are arranged in the positioning hole. The positioning plate is arranged below the positioning hole. Under the action of the positioning spring, the positioning column is pressed against the positioning plate. When the adjusting connecting rod drives the adjusting stud to rotate, the adjusting stud drives the adjusting connecting rod to move up and down, and the pressures received by the valve core and the positioning column increase or decrease synchronously.
[0004] Wherein, when the adjusting link rotates forward with the adjusting stud, the adjusting stud drives the adjusting link to move downward, and the spool spring and the positioning spring are compressed simultaneously, so that the pressures on the spool and the positioning post also increase together; when the adjusting link rotates reversely with the adjusting stud, the adjusting stud drives the adjusting link to move upward along the axis, and the spool spring and the positioning spring are relaxed simultaneously, so that the pressures on the spool and the positioning post also decrease together. The spool spring presses the spool with a certain acting force, and the water pressure when the spool is pushed open by water is the pressure relief threshold of the pressure reducing valve. By changing the magnitude of the pressure exerted by the spool spring on the spool, the pressure relief threshold of the pressure reducing valve can be changed. In addition, when the pressure on the positioning post increases, the resistance encountered when the adjusting link rotates will increase accordingly, and vice versa, the resistance will decrease, which will result in an obvious change in resistance when pushing the adjusting link to rotate.
[0005] Preferably, a plurality of grooves arranged at intervals are provided on the upper surface of the positioning plate, the grooves are arranged in a radial pattern, and the lower end of the positioning post can be inserted into the grooves to achieve positioning.
[0006] Preferably, the positioning plate includes a horizontal plate and a vertical plate, the grooves are provided on the upper surface of the horizontal plate, and the vertical plate is fixedly connected to the valve body. The positioning plate further includes a reinforcing rib, and the reinforcing rib is vertically arranged and connected to the horizontal plate and the vertical plate.
[0007] Preferably, the adjusting stud includes an upper connecting post and a lower screwed portion, the adjusting link is provided with a socket hole and a fixing screw hole, the socket hole is sleeved on the upper connecting post, the fixing screw hole is arranged at the front end of the adjusting link and extends from front to back along the axis of the adjusting link, and the fixing screw hole communicates with the socket hole; a fastening screw is further included, and the fastening screw connects the fixing screw hole and presses backward and fixes on the upper connecting post. Further, the outer surface of the upper connecting post is provided with knurling.
[0008] Preferably, the upper surface of the positioning plate is arranged to be inclined downward from front to back. When the lower end of the positioning post presses against the upper surface of the positioning plate, the positioning plate exerts an inclined backward acting force on the positioning post.
[0009] Preferably, the valve body further includes a water inlet passage and a pressure relief passage. An inlet is formed at the intersection of the water inlet passage and the valve body cavity, and an outlet is formed at the intersection of the pressure relief passage and the valve body cavity. When the spool is opened, the water in the water inlet passage can sequentially pass through the valve body cavity, the pressure relief passage and then flow out of the valve body.
[0010] A coffee machine includes a water pump, a heating device, and a first delivery pipeline connecting the water pump and the heating device. It also includes the pressure regulating valve adjusting mechanism, which is connected to the first delivery pipeline to control the pressure inside the delivery pipeline. It further includes a protection valve, which is connected to the first delivery pipeline.
[0011] Compared with the prior art, the present utility model has the following beneficial effects: First, by arranging the positioning plate below the adjusting link, the positioning post pressing on the positioning plate can generate resistance for the rotation of the adjusting link. Combining with the groove arranged on the upper surface of the positioning plate, when the adjusting link rotates to the required angle (corresponding to the required pressure relief threshold), it can be limited and stop rotating; Second, since the adjusting stud will move up and down with the thread fit when rotating, this makes the adjusting link move together, which makes the acting forces of the valve core spring and the positioning spring increase or decrease synchronously. Among them, since the pressure of the positioning spring acting on the positioning post will directly affect the acting force required for the user to rotate the adjusting link, this enables the user to intuitively perceive whether the current extracted pressure being adjusted is increasing or decreasing by the magnitude of the rotational force applied by hand, reducing the number of times of visual confirmation by eyes, which is beneficial to improving the coffee making efficiency. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the coffee machine;
[0013] Figure 2 is a three-dimensional structural diagram of the pressure regulating valve adjusting mechanism;
[0014] Figure 3 is a sectional structural diagram of the pressure regulating valve adjusting mechanism;
[0015] Figure 4 is a three-dimensional structural diagram of the positioning plate. Detailed Embodiments
[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0017] For ease of description, spatial relative terms such as "under", "below", "beneath", "above", "on" etc. may be used herein to describe the relationship of one element or feature shown in the figures with another element or feature. 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.
[0018] As Figure 1 shown, a coffee machine includes a water pump 91, a heating device 92, and a first delivery pipeline 93 connecting the water pump 91 and the heating device 92. It further includes the pressure regulating valve adjusting mechanism, which is connected to the first delivery pipeline 93 to control the pressure inside the delivery pipeline. It also includes a protection valve 94, which is connected to the first delivery pipeline 93.
[0019] As Figures 2 to 4 shown, the pressure regulating valve adjusting mechanism includes a valve body 1. The valve body 1 includes a valve body cavity 10, an installation port 11, a water inlet passage 12, and a pressure relief passage 13 that communicate with the valve body cavity 10. A water inlet is formed at the junction of the water inlet passage 12 and the valve body cavity 10, and a water outlet is formed at the junction of the pressure relief passage 13 and the valve body cavity 10. It further includes a valve core 2, a valve core spring 3, and an adjusting stud 4. The valve core 2 and the valve core spring 3 are arranged in the valve body cavity 10. The adjusting stud 4 is rotatably connected to the installation port 11. The two ends of the valve core spring 3 are respectively pressed against the valve core 2 and the adjusting stud 4. Under the action of the valve core spring 3, the valve core 2 abuts against the water inlet. When the valve core 2 is opened, the water in the water inlet passage 12 can sequentially pass through the valve body cavity 10, the pressure relief passage 13, and then flow out of the valve body 1. It also includes an adjusting connecting rod 5, a positioning plate 6, a positioning post 7, and a positioning spring 8. The head end of the adjusting connecting rod 5 can be sleeved on the adjusting stud 4. An opening-downward positioning hole 50 is provided in the middle section area of the adjusting connecting rod 5. The positioning spring 8 and at least part of the positioning post 7 are arranged in the positioning hole 50. The positioning plate 6 is arranged below the positioning hole 50. Under the action of the positioning spring 8, the positioning post 7 abuts against the positioning plate 6. When the adjusting connecting rod 5 drives the adjusting stud 4 to rotate, the adjusting stud 4 drives the adjusting connecting rod 5 to move up and down, and the pressures on the valve core 2 and the positioning post 7 increase or decrease synchronously.
[0020] When the adjusting link 5 drives the adjusting stud 4 to rotate forward, the adjusting stud 4 drives the adjusting link 5 to move downward, and the spool spring 3 and the positioning spring 8 are compressed simultaneously, so that the pressures on the spool 2 and the positioning post 7 also increase together; when the adjusting link 5 drives the adjusting stud 4 to rotate reversely, the adjusting stud 4 drives the adjusting link 5 to move upward along the axis, and the spool spring 3 and the positioning spring 8 are relaxed simultaneously, so that the pressures on the spool 2 and the positioning post 7 also decrease together. Among them, the forward rotation of the adjusting link 5 and the adjusting stud 4 is the rotation direction that makes the adjusting stud 4 move downward to press the spool spring 3. According to different rotation directions set by the thread, the forward rotation can be either to the left or to the right, and the understanding of the reverse rotation is the same. In addition, the spool spring 3 presses the spool 2 with a certain acting force, and the water pressure when the spool 2 is pushed open by water is the pressure relief threshold of the pressure reducing valve. By changing the magnitude of the pressure of the spool spring 3 acting on the spool 2, the pressure relief threshold of the pressure reducing valve can be changed. In addition, when the pressure on the positioning post 7 increases, the resistance when the adjusting link 5 rotates will increase accordingly, and vice versa, the resistance will decrease, which will have an obvious change in resistance when pushing the adjusting link 5 to rotate.
[0021] Preferably, a plurality of grooves 61 arranged at intervals are provided on the upper surface of the positioning plate 6, the grooves 61 are arranged in a radial pattern, and the lower end of the positioning post 7 can be inserted into the grooves 61 to achieve positioning.
[0022] Preferably, the positioning plate 6 includes a horizontal plate 62 and a vertical plate 63, the grooves 61 are provided on the upper surface of the horizontal plate 62, and the vertical plate 63 is fixedly connected to the valve body 1. The positioning plate 6 further includes a reinforcing rib 64, and the reinforcing rib 64 is vertically arranged and connected to the horizontal plate 62 and the vertical plate 63.
[0023] Preferably, the adjusting stud 4 includes an upper connecting column 41 and a lower threaded portion 42. The adjusting link 5 is provided with a socket hole 51 and a fixing screw hole 52. The socket hole 51 is sleeved on the upper connecting column 41. The fixing screw hole 52 is arranged at the front end of the adjusting link 5 and extends axially from front to back along the adjusting link 5, and the fixing screw hole 52 communicates with the socket hole 51; further, a fastening screw 53 is included, and the fastening screw 53 connects the fixing screw hole 52 and presses against and fixes on the upper connecting column 41 backward. Further, the outer surface of the upper connecting column 41 has knurling.
[0024] Preferably, the upper surface of the positioning plate 6 is arranged to be inclined downward from front to back. When the lower end of the positioning post 7 presses against the upper surface of the positioning plate 6, the positioning plate 6 exerts an inclined backward acting force on the positioning post 7.
[0025] The utility model has obvious advantages and beneficial effects compared with the prior art: First, by arranging the positioning plate 6 below the adjusting link 5, the positioning column 7 pressing on the positioning plate 6 can generate resistance for the rotation of the adjusting link 5. Combining with the groove 61 on the upper surface of the positioning plate 6, the adjusting link 5 can be limited and stop rotating when it rotates to the required angle (corresponding to the required pressure relief threshold); Second, since the adjusting stud 4 moves up and down with the thread fit when rotating, the adjusting link 5 also moves along with it, which makes the acting forces of the valve core spring 3 and the positioning spring 8 increase or decrease synchronously. Among them, since the pressure of the positioning spring 8 acting on the positioning column 7 directly affects the acting force required for the user to rotate the adjusting link 5, the user can intuitively perceive whether the current extracted pressure is increasing or decreasing by the magnitude of the rotational force applied by hand, reducing the number of times of visual confirmation by eyes, which is beneficial to improving the coffee making efficiency.
[0026] According to the disclosure and teaching of the above specification, those skilled in the art of the present utility model can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.
Claims
1. A pressure-changing valve regulating mechanism, comprising a valve body, the valve body comprising a valve body cavity and an installation port, a water inlet and a water outlet communicating with the valve body cavity, and also comprising a valve core, a valve core spring and an adjusting stud, the valve core and the valve core spring being arranged in the valve body cavity, the adjusting stud being rotatably connected to the installation port, the two ends of the valve core spring being respectively crimped on the valve core and the adjusting stud, and the valve core being pressed against the water inlet under the action of the valve core spring; characterized in that: It also includes an adjusting connecting rod, a positioning plate, a positioning column and a positioning spring. The head end of the adjusting connecting rod can be sleeved on the adjusting stud. The adjusting connecting rod is provided with a positioning hole opening downward. The positioning spring and at least part of the positioning column are arranged in the positioning hole. The positioning plate is arranged below the positioning hole. Under the action of the positioning spring, the positioning column is pressed against the positioning plate. When the adjusting connecting rod rotates with the adjusting stud, the adjusting stud moves up and down with the adjusting connecting rod, and the pressure on the valve core and the positioning column increases or decreases synchronously.
2. The pressure-changing valve regulating mechanism according to claim 1, characterized in that: The upper surface of the positioning plate is provided with a plurality of grooves arranged at intervals, and the grooves are arranged radially. The lower end of the positioning column can be inserted into the groove to achieve positioning.
3. The pressure-changing valve regulating mechanism according to claim 2, characterized in that: The positioning plate includes a horizontal plate and a vertical plate, the groove is arranged on the upper surface of the horizontal plate, and the vertical plate is fixedly connected to the valve body.
4. The pressure-changing valve regulating mechanism according to claim 3, characterized in that: The positioning plate also includes reinforcing ribs, which are vertically arranged and connected to the transverse plate and the vertical plate.
5. The pressure-changing valve regulating mechanism according to any one of claims 1 to 4, characterized in that: The adjusting stud comprises an upper connecting column and a lower threaded portion, the adjusting link is provided with a sleeve hole and a fixing screw hole, the sleeve hole is sleeved on the upper connecting column, the fixing screw hole is provided at the front end of the adjusting link and extends from front to rear along the axial direction of the adjusting link, and the fixing screw hole is connected to the sleeve hole; and a fastening screw is also included, the fastening screw is connected to the fixing screw hole and is pressed backward to be fixed on the upper connecting column.
6. The pressure-changing valve regulating mechanism according to claim 5, characterized in that: The upper surface of the positioning plate is arranged to be tilted downward from front to back. When the lower end of the positioning column is pressed against the upper surface of the positioning plate, the positioning plate exerts a force on the positioning column to tilt backward.
7. The pressure-changing valve regulating mechanism according to claim 5, characterized in that: The outer surface of the upper connecting column is knurled.
8. The pressure-changing valve regulating mechanism according to any one of claims 1 to 4, characterized in that: The valve body also includes a water inlet channel and a pressure relief channel. The water inlet is formed at the intersection of the water inlet channel and the valve body cavity, and the water outlet is formed at the intersection of the pressure relief channel and the valve body cavity. When the valve core is opened, water in the water inlet channel can pass through the valve body cavity and the pressure relief channel in sequence and then flow out of the valve body.
9. A coffee machine, comprising a water pump, a heating device and a first delivery pipeline connecting the water pump and the heating device, characterized in that: It also includes the pressure-changing valve regulating mechanism described in any one of claims 1 to 8, wherein the pressure-changing valve regulating mechanism is connected to the first delivery pipeline to control the pressure in the delivery pipeline.
10. The coffee machine according to claim 9, characterized in that It also includes a protection valve, which is connected to the first delivery pipeline.