A refrigeration mechanism of a beer machine

Abstract

The application provides a refrigerating mechanism of a beer machine, and belongs to the technical field of machinery. The refrigerating mechanism solves the problem of uneven refrigerating effect of the existing refrigerating mechanism. The beer machine comprises a machine shell, an inner container arranged in the machine shell and a beer outlet pipe arranged in the inner container. The refrigerating mechanism comprises a compressor, a condenser, a drying filter, a capillary tube one, a capillary tube two, an evaporator one and an evaporator two. The compressor, the condenser, the drying filter, the capillary tube one and the evaporator one are sequentially connected to form a refrigerating circuit one. The compressor, the condenser, the drying filter, the capillary tube two and the evaporator two are sequentially connected to form a refrigerating circuit two. The flow directions of the refrigerants in the refrigerating circuit one and the refrigerating circuit two are opposite (i.e. one spirally flows from top to bottom, and the other spirally flows from bottom to top). The cold air can form a convection in the inner container, is mixed with each other, the temperature of each part in the inner container tends to be uniform, the formed ice layer is uniform and thick, and the refrigerating effect is uniform.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology and relates to a refrigeration mechanism for a beer machine. Background Technology

[0002] Beer is a common beverage in our lives, especially popular in summer. Currently, the main types of beer on the market are bottled beer, canned beer, and keg beer. Bottled and canned beer are portable and easy to store, and are commonly used in homes. Keg beer has a large capacity, consistent taste, and rich flavor, and is widely used in bars, parties, and other occasions. Keg beer is generally used with beer dispensers, and to ensure better taste, existing beer dispensers are equipped with refrigeration mechanisms to chill the beer.

[0003] For example, Chinese patent application (application number: 201520040708.X) discloses an energy-saving and efficient refrigeration beer machine, including a base and a shell. The base is provided with a support column, and the upper end of the support column is provided with a fixing plate. The fixing plate is provided with an inner tank covered with an insulation layer and used to hold water. The opening end of the inner tank is on the same plane as the opening end of the shell. A refrigeration device is provided inside the shell. The refrigeration device includes a compressor, a condenser, a dryer filter, a solenoid valve, two capillary tubes, and an evaporator connected in sequence to form a circuit. The compressor, condenser, dryer filter, and solenoid valve are located between the base and the fixing plate. The evaporator is fixed in a spiral shape inside the inner tank. The two capillary tubes are covered with an insulation layer. The opening end of the shell and the opening end of the inner tank are provided with a top cover. It also includes several beer cooling tubes fixed on the top cover. The main body of the beer cooling tubes is arranged in a spiral pattern from top to bottom inside the inner tank. The outlet and inlet of the beer cooling tubes both extend out of the top cover. During refrigeration, water is added to the inner tank, and refrigerant flows in from the top of the evaporator through the capillary tube to absorb heat, causing the water near the evaporator to freeze. This results in a ring-shaped ice layer forming around the inner tank, and the beer chiller is immersed in the water and surrounded by the ring-shaped ice layer, thus achieving the goal of chilling beer.

[0004] Although the aforementioned beer machine can cool beer through its refrigeration mechanism, the evaporator extends spirally from top to bottom. The refrigerant flows in from the top of the evaporator, gradually absorbs heat, vaporizes, and flows out from the bottom. Therefore, the cooling effect at the top of the evaporator is better than at the bottom, resulting in uneven temperature distribution within the inner tank. The resulting ring-shaped ice layer is thicker at the top and more prone to gaps or even ice crystals at the bottom, making the cooling effect at the bottom of the inner tank worse than at the top. This uneven cooling effect, coupled with the fact that the beer cooling pipes are spirally arranged from top to bottom within the inner tank, means that the beer flows through the top of the inner tank for cooling before flowing through the bottom. Due to the temperature difference between the top and bottom, the beer exiting the cooling pipes has a poorer cooling effect, affecting its taste.

[0005] To address the problem of poor cooling performance, the current conventional approach is to increase the refrigerant flow rate, causing the compressor to operate at a high frequency, thereby improving the cooling effect and increasing the thickness of the ice layer at the bottom of the inner tank. However, a temperature difference still exists between the top and bottom, resulting in uneven ice layer thickness. Moreover, the compressor operates at a high frequency for extended periods, leading to a heavy load and high energy consumption. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a refrigeration mechanism for beer machines. The technical problem this invention aims to solve is: how to address the issue of uneven cooling effect in existing beer machine refrigeration mechanisms.

[0007] The objective of this invention can be achieved through the following technical solution: A refrigeration mechanism for a beer machine, the beer machine including a casing, an inner liner disposed within the casing, and a beer outlet pipe disposed within the inner liner, the inlet and outlet ends of the beer outlet pipe extending outside the inner liner; the refrigeration mechanism including a compressor, a condenser, a dryer filter, a capillary tube, and an evaporator arranged spirally along the vertical direction of the casing; the compressor, condenser, dryer filter, capillary tube, and evaporator are sequentially connected to form a refrigeration circuit; the refrigeration mechanism further includes a capillary tube and an evaporator arranged spirally along the vertical direction of the casing; the compressor, condenser, dryer filter, capillary tube, and evaporator are sequentially connected to form a refrigeration circuit; both evaporators are disposed within the inner liner, and the evaporator is arranged around the outer periphery of the evaporator; the evaporator is arranged around the outer periphery of the beer outlet pipe, and there is a gap between the evaporator and the beer outlet pipe; the top end of the evaporator is connected to the capillary tube; and the bottom end of the evaporator extends upward to the opening of the inner liner and is connected to the capillary tube.

[0008] The refrigeration mechanism of this beer machine features an improved design. Two evaporators (Evaporator 1 and Evaporator 2) are installed inside the inner tank, and two capillary tubes (Capillary Tube 1 and Capillary Tube 2) are also installed in the casing. The high-pressure refrigerant, compressed by the compressor and condensed by the condenser, is throttled and depressurized into low-pressure refrigerant via Capillary Tube 1 and Capillary Tube 2, respectively. This refrigerant then evaporates and absorbs heat through Evaporator 1 and Evaporator 2, achieving cooling. In other words, the refrigeration mechanism of this beer machine forms a dual refrigeration cycle, improving the cooling effect. Furthermore, in this application, Evaporator 2 is arranged around the periphery of Evaporator 1, with the top of Evaporator 2 connected to Capillary Tube 2 and the bottom of Evaporator 1 connected to Capillary Tube 1. This achieves two separate refrigeration cycles: one where the refrigerant flows downwards along the inner tank for evaporation and heat absorption, and another where it flows upwards along the inner tank for evaporation and heat absorption. This means that the cooling effect at the top of one refrigeration cycle is better than the cooling effect at the bottom, and vice versa, thus achieving a balance between the top and bottom temperatures and ensuring uniform temperature throughout the inner tank. Meanwhile, the refrigerant flows in opposite directions within the inner tank in both refrigeration circuits (one spirals downwards, the other spirals upwards). The resulting cold air also creates convection within the inner tank, mixing and further homogenizing the temperature throughout. This ensures a uniform and thick annular ice layer, preventing ice crystals. A gap exists between the dispensing pipe and evaporator one, ensuring the pipe is submerged in water around the annular ice layer without contacting it. This guarantees a consistently stable cooling effect for the beer, resulting in excellent taste. It also prevents the beer from freezing inside the dispensing pipe due to contact with the ice layer, which could prevent dispensing. The lower end of evaporator one or two extends upwards to the opening of the inner tank, preventing capillary tube one or two from interfering with the freezing effect at that point and avoiding penetration of the ice layer, further ensuring a uniform and thick ice layer.

[0009] In the refrigeration mechanism of the aforementioned beer machine, the spiral directions of evaporator one and evaporator two are the same. This arrangement ensures that the spiral flow directions of the refrigerant in evaporator one and evaporator two are also opposite. For example, the refrigerant in evaporator one flows clockwise from top to bottom, while the refrigerant in evaporator two flows counterclockwise from bottom to top. This allows the cold air generated by both evaporators to form convection in both vertical and circumferential directions, further resulting in a more uniform temperature throughout the inner tank. This ensures that the annular ice layer formed in the inner tank is uniform and thick throughout, preventing ice crystals and guaranteeing consistent and uniform cooling.

[0010] In the refrigeration mechanism of the aforementioned beer machine, evaporator one and evaporator two have the same number of spiral turns. The identical number of spiral turns in evaporator one and evaporator two ensures consistent cooling effects, further guaranteeing that the formed annular ice layer is uniformly thick and evenly distributed throughout, preventing ice crystals and ensuring uniform cooling from top to bottom.

[0011] In the refrigeration mechanism of the aforementioned beer machine, evaporators one and two are staggered in the vertical direction. Evaporators one and two are not flush in the vertical direction, but rather staggered, ensuring that each spiral layer of evaporator one is offset from each spiral layer of evaporator two. This avoids localized lower temperatures at their directly opposite positions, further ensuring uniform temperature throughout the machine. The resulting annular ice layer is relatively uniform and thick both top and bottom, preventing ice crystals and guaranteeing consistent and uniform cooling.

[0012] In the refrigeration mechanism of the aforementioned beer machine, several mounting brackets are fixed within the inner tank. These brackets are distributed circumferentially along the inner tank. Each mounting bracket has several vertical mounting holes for evaporator 1 to pass through, and several vertical mounting holes for evaporator 2 to pass through. The mounting brackets are in contact with the dispensing pipe, or there is a gap between the mounting brackets and the dispensing pipe. Evaporator 1 and evaporator 2 are fixed in the inner tank by the mounting brackets, which facilitates installation, provides good stability, and ensures a uniform and thick annular ice layer is formed during refrigeration. Furthermore, the mounting brackets can be designed to partially protrude from the surface of the formed annular ice layer, and the gap between the mounting brackets and the dispensing pipe also acts as a separator, maintaining a reasonable distance between the dispensing pipe and the ice layer, and preventing excessively low temperatures from causing the beer in the dispensing pipe to freeze and become blocked.

[0013] In the refrigeration mechanism of the aforementioned beer machine, the mounting frame includes a frame body one and a frame body two. The frame body one has several mounting slots one and two, which are spaced apart vertically. The frame body two has several mounting slots three and four, which are also spaced apart vertically. The frame body one and frame body two are detachably connected, and the mounting slots one and three can be correspondingly closed to form the aforementioned mounting holes one, and the mounting slots two and four can be correspondingly closed to form the aforementioned mounting holes two. The frame body one and frame body two are detachably connected. During installation, simply insert the evaporator one into the corresponding mounting slot one, insert the evaporator two into the corresponding mounting slot two, and then fasten the frame body two to the frame body one to secure the evaporator one and evaporator two in the inner tank, which is quite convenient.

[0014] In the refrigeration mechanism of the beer machine described above, the frame one has several protrusions one and two protrusions protruding towards the frame two. The protrusion length of the protrusion two is greater than the protrusion length of the protrusion one. The protrusions one and two protrusions are distributed at intervals along the vertical direction. The mounting groove one and mounting groove two are distributed on the end faces of the protrusions one and two. When the frame one and the frame two are connected, the protrusion one can extend into the corresponding mounting groove three, and the mounting groove one and the bottom of the corresponding mounting groove three enclose each other to form the aforementioned mounting hole one. The protrusion two can extend into the corresponding mounting groove four, and the mounting groove two and the bottom of the corresponding mounting groove four enclose each other to form the aforementioned mounting hole two. The first protrusion can extend into the second mounting groove of the second protrusion. Through the cooperation of the first and second protrusions, multiple positioning points can be formed between the first and second frames in the vertical direction. This ensures that the first and second frames are easy to install and will not shift in the vertical direction. This also ensures that the installation positions of the first and second evaporators will not shift, thus ensuring that the formed annular ice layer is thicker and more uniform, and ensuring the chilling effect of beer.

[0015] In the refrigeration mechanism of the aforementioned beer machine, both frame one and frame two are elongated strips extending vertically along the machine casing. Frame one has several locking slots (first and second), located on both side panels of frame one, spaced apart vertically. Frame two has several locking connectors (first and second). Locking connectors (first and second) engage with corresponding locking slots (first and second), respectively. This arrangement ensures the locking points between frame one and frame two are located on both sides of frame one, creating lateral restraint and preventing horizontal displacement or detachment. This prevents misalignment between evaporator one and evaporator two, resulting in a thicker and more uniform annular ice layer, thus ensuring optimal beer chilling.

[0016] In the refrigeration mechanism of the aforementioned beer machine, the hook orientation of connector one is opposite to that of connector two. The opposite orientation of the hooks of connector one and connector two provides mutual restraint, preventing connector one and connector two from easily detaching from their respective locking slots, and ensuring that the positions of evaporator one and evaporator two do not shift. This results in a thicker and more uniform annular ice layer, ensuring the beer remains chilled.

[0017] In the refrigeration mechanism of the aforementioned beer machine, the top and bottom of frame one are provided with positioning holes, and the top and bottom of frame two are provided with positioning blocks. The positioning blocks can be inserted into the corresponding positioning holes. This design of the positioning holes and blocks allows frame one and frame two to be pre-positioned during installation without the need for alignment, making installation convenient.

[0018] In the refrigeration mechanism of the aforementioned beer machine, both frame one and frame two are provided with several weight-reducing holes. The weight-reducing holes enable weight reduction, and the ice layer formed by the heat absorption and cooling of evaporator one and evaporator two can be tightly fastened to frame one and frame two through the weight-reducing holes without any gaps, ensuring that the formed annular ice layer is thicker and more uniform.

[0019] Compared with existing technologies, the refrigeration mechanism of this beer machine has the following advantages:

[0020] 1. The refrigeration mechanism of this beer machine forms a dual refrigeration circulation loop, which improves the refrigeration effect. The refrigerant flows in opposite directions in the inner tank of the two refrigeration loops (i.e., one spirals downwards and the other spirals upwards). The generated cold air can also form convection in the inner tank and mix with each other, which further makes the temperature of each part of the inner tank more uniform. This makes the ring-shaped ice layer formed in the inner tank more uniform and thick overall, and there will be no ice crystals.

[0021] 2. The structural design of frame one and frame two makes the installation of evaporator one and evaporator two relatively convenient, and the position is accurate after installation without displacement, which further ensures that the formed ring-shaped ice layer is relatively uniform and thick overall. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a beer machine equipped with this refrigeration mechanism.

[0023] Figure 2 This is the three-dimensional structure of the refrigeration mechanism of this beer machine. Figure 1 .

[0024] Figure 3 This is the three-dimensional structure of the refrigeration mechanism of this beer machine. Figure 2 .

[0025] Figure 4 This is a 3D structural diagram of the mounting bracket.

[0026] Figure 5 It was the mounting bracket that exploded. Figure 1 .

[0027] Figure 6 It was the explosion of the mounting bracket. Figure 2 .

[0028] In the diagram: 1. Housing; 2. Inner liner; 3. Wine outlet pipe; 4. Compressor; 5. Condenser; 6. Evaporator 1; 7. Evaporator 2; 8. Capillary tube 1; 9. Capillary tube 2; 10. Mounting bracket; 10a. Bracket 1; 10a1. Protrusion 1; 10a2. Protrusion 2; 10a3. Snap-fit ​​groove 1; 10a4. Snap-fit ​​groove 2; 10a5. Positioning hole; 10b. Bracket 2; 10b1. Snap-fit ​​connector 1; 10b2. Snap-fit ​​connector 2; 10b3. Positioning block; 10c. Mounting hole 1; 10c1. Mounting slot 1; 10c2. Mounting slot 3; 10d. Mounting hole 2; 10d1. Mounting slot 2; 10d2. Mounting slot 4; 10e. Weight reduction hole; 11. Dryer filter; 12. Return pipe. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figure 1-3 As shown, this beer dispenser includes a housing 1, an inner tank 2 disposed within the housing 1, and a beer dispensing pipe 3 disposed within the inner tank 2. Both the inlet and outlet ends of the beer dispensing pipe 3 extend outside the inner tank 2 and are connected to the beer dispensing tap. The refrigeration mechanism includes a compressor 4, a condenser 5, a dryer filter 11, a circuit pipe 12, an evaporator 6, an evaporator 7, a capillary tube 8, and a capillary tube 9.

[0031] Evaporators 6 and 7 are both spirally arranged vertically along the casing 1. Both evaporators 6 and 7 are housed within the inner liner 2, with evaporator 7 surrounding the outer periphery of evaporator 6. Several beer dispensing pipes 3 are spirally arranged vertically, with the spiral pipes sequentially nested from the inside out. Evaporator 6 surrounds the outermost beer dispensing pipe 3, and there is a gap between evaporator 6 and the outermost beer dispensing pipe 3. This ensures that the beer dispensing pipe 3 is immersed in the water within the annular ice layer without contacting the ice layer, guaranteeing a consistently stable refrigeration effect for the beer, resulting in excellent taste. It also prevents the beer inside the dispensing pipe 3 from freezing due to contact with the ice layer, which would prevent dispensing. The compressor 4, condenser 5, dryer filter 11, capillary tube 8, evaporator 6, and return pipe 12 are connected in sequence to form refrigeration circuit one. The compressor 4, condenser 5, dryer filter 11, capillary tube 9, evaporator 7, and return pipe 12 are connected in sequence to form refrigeration circuit two. This refrigeration mechanism forms a dual refrigeration cycle, and the evaporators 6 and 7 are interlocked, forming a relatively thick annular ice layer, thus improving the cooling effect.

[0032] Specifically, the compressor 4 has an intake pipe connected to its inlet, and a three-way connector is connected to the intake pipe. The top of evaporator 6 is connected to one of the interfaces of the three-way connector, and the bottom of evaporator 6 extends upward to the opening of the inner liner 2 and connects to capillary tube 8. The top of evaporator 7 is connected to capillary tube 9, and the bottom of evaporator 7 extends upward to the opening of the inner liner 2 and connects to the other interface of the three-way connector. This achieves two refrigerant paths: one path flows from top to bottom along the inner liner 2 for evaporation and heat absorption, and the other path flows from bottom to top along the inner liner 2 for evaporation and heat absorption. In other words, the cooling effect at the top of one refrigeration circuit is better than the cooling effect at the bottom, and the cooling effect at the bottom of another refrigeration circuit is better than the cooling effect at the top. This achieves a balance between the top and bottom, ensuring that the temperature of the inner liner 2 remains uniform. Meanwhile, the refrigerant flows in opposite directions in the inner tank 2 of the two refrigeration circuits (i.e., one flows spirally from top to bottom, and the other flows spirally from bottom to top). The generated cold air can also form convection in the inner tank 2 and mix with each other, further making the temperature of each part of the inner tank 2 more uniform. This makes the ring-shaped ice layer formed in the inner tank 2 more uniform and thick overall, without ice crystals, ensuring that the beer can maintain a stable refrigeration effect and have a good taste.

[0033] Furthermore, the spiral directions of evaporators 6 and 7 are the same. Since the refrigerant in evaporator 6 enters from the bottom and exits from the top, while the refrigerant in evaporator 7 enters from the top and exits from the bottom, the spiral flow directions of the refrigerant in evaporators 6 and 7 are opposite. For example, the refrigerant in evaporator 6 flows clockwise as it flows from top to bottom, while the refrigerant in evaporator 7 flows counterclockwise as it flows from bottom to top. This further enables the cold air generated by both to form convection in both the vertical and circumferential directions, further making the temperature of each part in the inner liner 2 more uniform. This results in a relatively uniform and thick annular ice layer formed in the inner liner 2, preventing ice shards from forming and ensuring uniform and consistent cooling from top to bottom.

[0034] Evaporator 6 and evaporator 7 have the same number of spiral turns, ensuring consistent cooling performance. Evaporators 6 and 7 are vertically staggered, meaning they are not flush. Each spiral layer of evaporator 6 is offset from each spiral layer of evaporator 7, preventing localized temperature drops at their directly opposite positions. This further ensures uniform temperature distribution throughout, resulting in a relatively uniform and thick annular ice layer that prevents ice crystal formation and guarantees consistent cooling.

[0035] To go further, such as Figure 2 and 3As shown, several mounting brackets 10 are fixed in the inner tank 2. These mounting brackets 10 are distributed circumferentially around the inner tank 2. Each mounting bracket 10 has several vertical mounting holes 10c for the evaporator 6 to pass through, and several vertical mounting holes 10d for the evaporator 7 to pass through. The mounting brackets 10 are in contact with the dispensing pipe 3, or there is a gap between them. The mounting brackets 10 can partially protrude from the surface of the formed annular ice layer, and since there is a certain gap between them and the dispensing pipe 3, they also act as a separator, maintaining a reasonable distance between the dispensing pipe 3 and the ice layer, preventing the beer in the dispensing pipe 3 from freezing and causing blockage due to excessively low temperatures.

[0036] like Figure 4-6 As shown, the mounting frame 10 includes a first frame 10a and a second frame 10b. Both the first frame 10a and the second frame 10b are elongated strips and extend vertically along the housing 1. The first frame 10a has several protrusions 10a1 and 10a2 protruding towards the second frame 10b. The protrusion length of the second protrusion 10a2 is greater than that of the first protrusion 10a1. The protrusions 10a1 and 10a2 are spaced apart vertically. Mounting groove 10c1 and mounting groove 2 10d1 are respectively provided on the end faces of protrusion 10a1 and protrusion 2 10a2. The frame 2 10b is provided with a plurality of mounting grooves 3 10c2 and a plurality of mounting grooves 4 10d2. The plurality of mounting grooves 3 10c2 and a plurality of mounting grooves 4 10d2 are distributed at intervals along the vertical direction. When the frame 1 10a and the frame 2 10b are connected, protrusion 10a1 can extend into the corresponding mounting groove 3 10c2 and the bottom of the groove 10c1 and the corresponding mounting groove 3 10c2 enclose to form the aforementioned mounting hole 10c. Protrusion 2 10a2 can extend into the corresponding mounting groove 4 10d2 and the bottom of the groove 2 10d1 and the corresponding mounting groove 4 10d2 enclose to form the aforementioned mounting hole 2 10d. The cooperation of protrusion 10a1 and protrusion 10a2 allows multiple positioning points to be formed between frame 10a and frame 2 10b in the vertical direction. This ensures that frame 10a and frame 2 10b are easy to install and will not shift in the vertical direction. This also ensures that the installation positions of evaporator 1 6 and evaporator 2 7 will not shift, thus ensuring that the formed annular ice layer is thicker and more uniform, and ensuring the chilling effect of beer.

[0037] The frame 10a has several locking slots 10a3 and 10a4, located on both sides of the frame 10a. These slots are spaced vertically. The frame 10b has several locking connectors 10b1 and 10b2. Connecting connectors 10b1 and 10b2 engage with corresponding locking slots 10a3 and 10a4, respectively. The locking points between the frame 10a and frame 10b are located on both sides of the frame 10a, forming lateral limiting and preventing horizontal displacement or disengagement. The hooks of connector 10b1 and connector 10b2 face opposite directions, which limits their mutual positioning and prevents them from easily coming off the slots 10a3 and 10a4. This ensures that the installation positions of evaporator 6 and evaporator 7 will not shift, resulting in a thicker and more uniform annular ice layer and ensuring the chilling effect of the beer.

[0038] Furthermore, both the top and bottom of frame 10a have positioning holes 10a5, and both the top and bottom of frame 2 10b have positioning blocks 10b3. The positioning blocks 10b3 can be inserted into the corresponding positioning holes 10a5, allowing frame 10a and frame 2 10b to be pre-positioned during installation without the need for alignment, making installation convenient. Both frame 10a and frame 2 10b have several weight-reduction holes 10e, which can achieve weight reduction. Moreover, the ice layer formed by the heat absorption and cooling of evaporator 1 6 and evaporator 2 7 can be tightly fastened to frame 10a and frame 2 10b through the weight-reduction holes 10e without gaps, ensuring that the formed annular ice layer is thicker and more uniform.

[0039] During the refrigeration process of this brewery, the refrigerant in condenser 5 passes through dryer filter 11 and is split into capillary tube 8 and capillary tube 9. The refrigerant in capillary tube 8 flows from the bottom of evaporator 6 and upwards counterclockwise, while the refrigerant in capillary tube 9 flows from the top of evaporator 7 and downwards clockwise. The evaporation and heat absorption by evaporators 6 and 7 causes the water in the inner tank 2 to freeze near evaporators 6 and 7, forming a ring-shaped ice layer. The beer outlet pipe 3 is immersed in the unfrozen water in the inner tank 2 and surrounded by this ring-shaped ice layer, thus refrigerating the beer passing through the outlet pipe 3 and providing a chilled effect. After absorbing heat through evaporation, the refrigerant vaporizes and flows out from the top of evaporator 6 and the bottom of evaporator 7, respectively, into compressor 4, forming a cycle.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0041] Although this document frequently uses terms such as casing 1, inner liner 2, wine outlet pipe 3, compressor 4, condenser 5, evaporator one 6, evaporator two 7, capillary tube one 8, and capillary tube two 9, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A refrigeration mechanism for a beer machine, the beer machine comprising a housing (1), an inner liner (2) disposed within the housing (1), and a beer outlet pipe (3) disposed within the inner liner (2), wherein the inlet and outlet ends of the beer outlet pipe (3) extend outside the inner liner (2), the refrigeration mechanism comprising a compressor (4), a condenser (5), a dryer filter (11), a capillary tube (8), and an evaporator (6) arranged spirally along the vertical direction of the housing (1), wherein the compressor (4), condenser (5), dryer filter (11), capillary tube (8), and evaporator (6) are sequentially connected to form a refrigeration circuit, characterized in that, The refrigeration mechanism also includes a second capillary tube (9) and a second evaporator (7) arranged spirally along the vertical direction of the casing (1). The compressor (4), condenser (5), dryer filter (11), second capillary tube (9) and second evaporator (7) are connected in sequence to form a second refrigeration circuit. The first evaporator (6) and the second evaporator (7) are both arranged in the inner liner (2). The second evaporator (7) is arranged around the outer periphery of the first evaporator (6). The first evaporator (6) is arranged around the outer periphery of the wine outlet pipe (3). There is a gap between the first evaporator (6) and the wine outlet pipe (3). The top of the second evaporator (7) is connected to the second capillary tube (9). The bottom of the first evaporator (6) extends upward to the opening of the inner liner (2) and is connected to the first capillary tube (8).

2. The refrigeration mechanism of the beer machine according to claim 1, characterized in that, The spiral directions of evaporator one (6) and evaporator two (7) are the same.

3. The refrigeration mechanism of the beer machine according to claim 1, characterized in that, The number of spiral turns in evaporator one (6) and evaporator two (7) is the same.

4. The refrigeration mechanism of the beer machine according to claim 1, characterized by, The evaporator one (6) and evaporator two (7) are staggered in the vertical direction.

5. The refrigeration mechanism of the beer machine according to claim 1, 2, 3, or 4, characterized in that, The inner liner (2) is also fixed with several mounting brackets (10), which are distributed around the circumference of the inner liner (2). The mounting brackets (10) are provided with several mounting holes (10c) in the vertical direction for the evaporator (6) to pass through. The mounting brackets (10) are also provided with several mounting holes (10d) in the vertical direction for the evaporator (7) to pass through. There is a gap between the mounting brackets (10) and the wine outlet pipe (3).

6. The refrigeration unit of a beer machine according to claim 5, characterized in that The mounting frame (10) includes a frame body one (10a) and a frame body two (10b). The frame body one (10a) is provided with a plurality of mounting slots one (10c1) and a plurality of mounting slots two (10d1), which are distributed at intervals along the vertical direction. The frame body two (10b) is provided with a plurality of mounting slots three (10c2) and a plurality of mounting slots four (10d2), which are distributed at intervals along the vertical direction. The first frame (10a) and the second frame (10b) are distributed vertically at intervals. The first mounting slot (10c1) and the second mounting slot (10d2) are detachably connected. The first mounting slot (10c1) and the second mounting slot (10d2) can be correspondingly enclosed to form the first mounting hole (10c) and the second mounting slot (10d1) and the second mounting slot (10d2) can be correspondingly enclosed to form the second mounting hole (10d).

7. The refrigeration unit of a beer machine according to claim 6, characterized in that The frame one (10a) has several protrusions one (10a1) and two (10a2) protruding towards the frame two (10b). The protruding length of the two (10a2) is greater than that of the one (10a1). The protrusions one (10a1) and two (10a2) are distributed at intervals along the vertical direction. The mounting groove one (10c1) and mounting groove two (10d1) are distributed on the end faces of the protrusions one (10a1) and two (10a2). When the first (10a) and the second (10b) frame are connected, the first (10a1) protrusion can extend into the corresponding third (10c2) mounting groove, and the bottom of the first (10c1) and the corresponding third (10c2) mounting groove together form the first (10c) mounting hole. The second (10a2) protrusion can extend into the corresponding fourth (10d2) mounting groove, and the bottom of the second (10d1) and the corresponding fourth (10d2) mounting groove together form the second (10d) mounting hole.

8. The refrigeration mechanism of the beer machine according to claim 6, characterized in that, Both frame one (10a) and frame two (10b) are long strips and extend vertically along the casing (1). Frame one (10a) has several snap-fit ​​slots one (10a3) and several snap-fit ​​slots two (10a4). The snap-fit ​​slots one (10a3) and several snap-fit ​​slots two (10a4) are located on the two side plates of frame one (10a). The snap-fit ​​slots one (10a3) and several snap-fit ​​slots two (10a4) are distributed at intervals along the vertical direction. Frame two (10b) has several snap-fit ​​connectors one (10b1) and several snap-fit ​​connectors two (10b2). The snap-fit ​​connectors one (10b1) can snap into the corresponding snap-fit ​​slots one (10a3), and the snap-fit ​​connectors two (10b2) can snap into the corresponding snap-fit ​​slots two (10a4).

9. The refrigeration mechanism of the beer machine according to claim 8, characterized in that, The hook orientation of the first snap-fit ​​connector (10b1) is opposite to that of the second snap-fit ​​connector (10b2).

10. The refrigeration mechanism of the beer machine according to claim 6, characterized in that, The first frame (10a) has positioning holes (10a5) at the top and bottom, and the second frame (10b) has positioning blocks (10b3) at the top and bottom. The positioning blocks (10b3) can be inserted into the corresponding positioning holes (10a5).

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