Waterway buffering device for coffee machine

Abstract

The utility model provides a waterway buffer device for a coffee machine, which comprises a first pipe body, a second pipe body, a buffer bag, a first fixed plate, a second fixed plate and a movable plate, one end of the first pipe body is connected with a water pump of the coffee machine, and the other end of the first pipe body is connected with the buffer bag; one end of the second pipe body is communicated with the middle of the first pipe body, and the other end of the second pipe body is connected with a heater of the coffee machine; the first fixing plate is fixed to the first pipe body, and a supporting column is installed on the first fixing plate. The buffer bag is arranged at the end of the first pipe body, when the coffee machine is started, water flow firstly enters the buffer bag under the action of inertia, elastic force of the spring is overcome to enable the buffer bag to expand, impact force is reduced, stable flowing of the water flow is guaranteed, and noise of a water pump is reduced. Water flow energy loss during normal use can be reduced, so that the load of the water pump is reduced, and the service life of the water pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine equipment technology, and in particular to a water circuit buffer device for coffee machines. Background Technology

[0002] When a coffee machine is working, water needs to be injected into the heater via a water pump. Because the water pipes in the coffee machine are closed, when the pump starts, the water in the pipes will experience impact and vibration due to inertia, leading to inconsistent water flow and loud pump noise. To solve these problems, buffer devices are installed in the pipes. For example, a coffee machine disclosed in Chinese Patent Application No. 200820046320.0, and a coffee machine with a water pump buffer device disclosed in Chinese Patent Application No. 202322994374.7, both reduce the impact force of the water flow by adding buffer devices to the water circuit. However, these two buffer devices mainly rely on setting up a chamber with a certain volume to... Water flow can flow back and collide with subsequent water flows to cancel each other out in momentum, thus achieving a buffering effect. However, the chamber volumes of the two buffer devices cannot change. Due to the incompressibility of water, the buffering effect is limited when the instantaneous water flow is large. Furthermore, during normal use, the water flow direction changes suddenly when passing through the two buffer devices, resulting in significant energy loss and increased pump load. Therefore, a water circuit buffer device for coffee machines is needed, which has chambers with variable volumes to buffer the impact force of water flow on the pipeline when the coffee machine starts, ensuring stable water output. The outlet of the buffer device has a smooth arc-shaped part to reduce energy loss during normal use and reduce pump load. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a water circuit buffer device for a coffee machine. This device features a chamber with variable volume to buffer the impact of water flow on the pipeline during coffee machine startup, ensuring stable water output. Furthermore, the outlet of the buffer device has a smooth arc-shaped section to reduce energy loss of the water flow during normal use and lower the load on the water pump.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes a water circuit buffer device for a coffee machine, comprising: a first pipe body, a second pipe body, a buffer bladder, a first fixed plate, a second fixed plate, and a movable plate. One end of the first pipe body is connected to the water pump of the coffee machine, and the other end of the first pipe body is connected to the buffer bladder. One end of the second pipe body is connected to the middle of the first pipe body, and the other end of the second pipe body is connected to the heater of the coffee machine. The first fixed plate is fixed on the first pipe body, and a support column is installed on the first fixed plate. One end of the support column is connected to the first fixed plate, and the other end of the support column is connected to the second fixed plate. The movable plate is slidably installed on the support column, and the movable plate is tightly fitted to the upper part of the buffer bladder.

[0006] Furthermore, the buffer bladder has multiple corrugated telescopic sections in the middle.

[0007] Furthermore, the lower part of the buffer bladder is provided with a connecting cap, the upper part of the connecting cap is connected to the lower part of the buffer bladder, the inner side of the connecting cap is provided with an internal thread, the buffer bladder is connected to the first tube body through the connecting cap, and a sealing rubber ring is provided at the connection between the connecting cap and the first tube body.

[0008] Furthermore, a spring is provided between the movable plate and the second fixed plate.

[0009] Furthermore, both the upper part of the movable plate and the lower part of the second fixed plate are provided with limiting rings, and both ends of the spring are locked in the middle of the limiting rings.

[0010] Furthermore, the second pipe body has an arc-shaped section in the middle, which bends outward along the direction of water flow in the first pipe body.

[0011] The beneficial effects of this utility model are as follows: By setting a buffer bladder at the end of the first pipe, when the coffee machine is started, the water flow first enters the buffer bladder under the action of inertia, and overcomes the elastic force of the spring to expand the buffer bladder, thereby reducing the impact force, ensuring the stable flow of water and reducing the noise of the water pump. The second pipe has an arc-shaped part in the middle, which can reduce the energy loss of the water flow during normal use, thereby reducing the load on the water pump and improving the service life of the water pump. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0014] In the figure: 1-First tube body, 2-Second tube body, 3-Buffer bladder, 4-First fixing plate, 5-Second fixing plate, 6-Modible plate, 7-Support column, 8-Telescopic part, 9-Connecting cap, 10-Spring, 11-Limiting ring, 12-Arc-shaped part. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0016] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0017] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0018] like Figure 1 , Figure 2 As shown, an embodiment of this utility model provides a water circuit buffer device for a coffee machine, including: a first pipe body 1, a second pipe body 2, a buffer bladder 3, a first fixing plate 4, a second fixing plate 5, and a movable plate 6. One end of the first pipe body 1 is connected to the water pump of the coffee machine, and the other end of the first pipe body 1 is connected to the buffer bladder 3. One end of the second pipe body 2 is connected to the middle part of the first pipe body 1, and the other end of the second pipe body 2 is connected to the heater of the coffee machine. The first fixing plate 4 is fixed on the first pipe body 1, and a support column 7 is installed on the first fixing plate 4. One end of the support column 7 is connected to the first fixing plate 4, and the other end of the support column 7 is connected to the second fixing plate 5. The movable plate 6 is slidably installed on the support column 7, and the movable plate 6 is tightly fitted with the upper part of the buffer bladder 3.

[0019] When the water pump starts, the pipe is filled with air, resulting in low resistance and a fast start-up speed. This causes the water to flow at high speed in the pipe, leading to intermittent water flow and loud pump noise. This device is installed between the water pump and the heater of the coffee machine. When the water pump starts, the high-speed water flow enters the buffer bladder 3 along the first pipe 1 under the action of inertia. Because the buffer bladder 3 has multiple telescopic parts 8 in the middle, it extends under the impact of the water flow, thereby increasing the volume of the buffer bladder 3. When the buffer bladder 3 extends, it overcomes the work done by the spring 10, thereby consuming some of the kinetic energy of the water flow and reducing the impact force of the water flow. After the buffer bladder 3 extends to a certain limit, the water flows out through the second pipe 2 along the arc-shaped part 12 and enters the heater. Because the water flow is gradually guided by the arc-shaped part 12 to flow out of the first pipe 1, the energy loss is small when the water flows from the first pipe 1 into the second pipe 2 during normal use, which can reduce the load on the water pump.

[0020] Preferably, the buffer bladder 3 has multiple corrugated telescopic sections 8 in the middle, which allows the buffer bladder 3 to extend axially under the impact of water flow, thereby increasing the volume of the buffer bladder 3, reducing the impact of water flow on the pipeline when the water pump starts, reducing the noise of the water pump, and the volume of the buffer bladder 3 can be adjusted according to the water pressure in the pipeline, extending when the pressure is high and contracting when the pressure is low, so as to balance the water pressure and ensure the stability of the water output.

[0021] In a preferred embodiment, such as Figure 2 As shown, the lower part of the buffer bladder 3 is provided with a connecting cap 9, the upper part of the connecting cap 9 is connected to the lower part of the buffer bladder 3, and the inner side of the connecting cap 9 is provided with an internal thread. The buffer bladder 3 is connected to the first tube body 1 through the connecting cap 9. The buffer bladder 3 is detachably installed on the first tube body 1 and can be replaced when the buffer bladder 3 ages. A sealing rubber ring is provided at the connection between the connecting cap 9 and the first tube body 1, so that the buffer bladder 3 can be tightly connected to the end of the first tube body 1, preventing water from seeping out from the connection between the connecting cap 9 and the first tube body 1.

[0022] In one specific embodiment, a spring 10 is provided between the movable plate 6 and the second fixed plate 5. The movable plate 6 can slide on the support column 7 and provide resistance when the buffer bladder 3 extends, allowing the buffer bladder 3 to consume more kinetic energy of the water flow when impacted by the water flow. A certain amount of potential energy is stored by the spring 10 to compensate for water flow fluctuations when the water pump is working, ensuring the stability of the water output from the coffee machine. The water pressure in the coffee machine is typically 5-10 bar, and the cross-sectional area of ​​the upper part of the buffer bladder 3 is approximately 4 cm². 2 That is, when the spring 10 is working, it needs to withstand a pressure of 20kg to 40kg. After calculation, a spring 10 with a suitable elastic coefficient is selected, and the compression stroke of the spring 10 during operation is controlled to be 4 to 8cm, so as to avoid the buffer device being too large and affecting the structural design of the coffee machine.

[0023] In one specific embodiment, both the upper part of the movable plate 6 and the lower part of the second fixed plate 5 are provided with limiting rings 11. Both ends of the spring 10 are locked in the middle of the limiting rings 11. The limiting rings 11 constrain both ends of the spring 10, preventing the spring 10 from slipping between the movable plate 6 and the second fixed plate 5, thereby improving the reliability of the buffer device.

[0024] In one specific embodiment, the second pipe body 2 has an arc-shaped section 12 in the middle. The arc-shaped section 12 bends outward along the direction of water flow in the first pipe body 1. During buffering, the water flow will preferentially enter the buffer bladder 3 at the end of the first pipe body 1 due to inertia. Only when the buffer bladder 3 is full will it flow along the arc-shaped section 12 through the second pipe body 2 to the heater of the coffee machine. The arc-shaped section 12 can guide the water flow and reduce the loss of kinetic energy when the water flows through this position. This allows the device to play a buffering role while reducing the load on the water pump under normal working conditions and improving the service life of the water pump.

[0025] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A water circuit buffer device for a coffee machine, characterized in that, include: The system comprises a first tube (1), a second tube (2), a buffer bladder (3), a first fixing plate (4), a second fixing plate (5), and a movable plate (6). One end of the first tube (1) is connected to the water pump of the coffee machine, and the other end of the first tube (1) is connected to the buffer bladder (3). One end of the second tube (2) is connected to the middle of the first tube (1), and the other end of the second tube (2) is connected to the heater of the coffee machine. The first fixing plate (4) is fixed on the first tube (1), and a support column (7) is installed on the first fixing plate (4). One end of the support column (7) is connected to the first fixing plate (4), and the other end of the support column (7) is connected to the second fixing plate (5). The movable plate (6) is slidably installed on the support column (7), and the movable plate (6) is tightly fitted to the upper part of the buffer bladder (3).

2. The water circuit buffer device for a coffee machine according to claim 1, characterized in that, The buffer bladder (3) has multiple corrugated telescopic sections (8) in the middle.

3. A water circuit buffer device for a coffee machine according to claim 2, characterized in that, The buffer bladder (3) is provided with a connecting cap (9) at the lower part. The upper part of the connecting cap (9) is connected to the lower part of the buffer bladder (3). The inner side of the connecting cap (9) is provided with an internal thread. The buffer bladder (3) is connected to the first tube body (1) through the connecting cap (9). A sealing ring is provided at the connection between the connecting cap (9) and the first tube body (1).

4. A water circuit buffer device for a coffee machine according to claim 1, characterized in that, A spring (10) is provided between the movable plate (6) and the second fixed plate (5).

5. A water circuit buffer device for a coffee machine according to claim 4, characterized in that, The upper part of the movable plate (6) and the lower part of the second fixed plate (5) are both provided with limiting rings (11), and both ends of the spring (10) are locked in the middle of the limiting rings (11).

6. A water circuit buffer device for a coffee machine according to claim 1, characterized in that, The second pipe body (2) has an arc-shaped part (12) in the middle, and the arc-shaped part (12) bends outward along the direction of water flow in the first pipe body (1).

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