Single-compressor double-cold-source refrigerating system suitable for drink making equipment

Abstract

The invention provides a single-compressor and double-cold-source refrigerating system suitable for beverage preparation equipment. The single-compressor and double-cold-source refrigerating system comprises the beverage preparation equipment and a compressor, the drink making equipment comprises a compressor, a refrigerator refrigeration unit and a cold water refrigeration unit; the output end of the compressor is connected with the refrigerator refrigerating unit and the cold water refrigerating unit, and the compressor is used for driving the refrigerator refrigerating unit to refrigerate a refrigerator and driving the cold water refrigerating unit to prepare cold water. An integrated structure of the cold water evaporator and the refrigerator evaporator is adopted, a refrigerant is divided into two paths, the water-cooling coil pipe is matched with the circulating water pump to refrigerate drinks in the cold water tank, the air-cooling evaporator is matched with the fan to achieve air-cooling circulating cooling, and the two evaporators are both arranged in a cabinet space with a heat preservation layer; refrigeration efficiency and compressor operation stability are remarkably improved, cabinet temperature fluctuation and equipment start-stop frequency are reduced, and energy conservation and consumption reduction are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of beverage preparation equipment refrigeration system, and particularly relates to a single-compressor double-cold-source refrigeration system suitable for beverage preparation equipment. BACKGROUND

[0002] In the field of existing beverage preparation equipment, refrigeration technology is the core to realize the beverage refrigeration function. Common refrigeration methods include air cooling, water cooling and direct cooling, and their basic principles are all to reduce the beverage temperature through heat exchange, but different refrigeration methods are suitable for specific types of beverage storage due to the differences in heat transfer medium and structural design. For example, air cooling technology is suitable for the refrigeration of bottled beverages through air circulation; water cooling technology is commonly used for the rapid cooling of bulk carbonated beverages due to the high specific heat capacity of liquid medium; direct cooling technology is commonly used in juice beverage equipment by directly contacting the beverage container with the evaporator. In addition, semiconductor refrigeration is applied to the cooling demand of direct drinking water machines due to its compact structure and no noise. Although these technologies have mature principles, they are limited to single refrigeration mode, resulting in single function of the equipment.

[0003] Existing commercial beverage equipment generally adopts a "one-to-one" refrigeration system design, that is, a single device is only suitable for a single refrigeration mode and beverage type. For example, air-cooled refrigerators cannot meet the water cooling demand of bulk carbonated beverages, and direct-cooled juice machines also cannot meet the large-capacity air cooling storage of bottled beverages. This limitation forces commercial scenarios to configure multiple independent devices, which not only increases the procurement and maintenance costs, but also reduces the space and energy efficiency utilization due to large equipment footprint and energy consumption stacking. It cannot meet the general refrigeration demand of cross-category beverages. SUMMARY

[0004] The present application provides a single-compressor double-cold-source refrigeration system suitable for beverage preparation equipment, which solves the problem of single function of the equipment due to the limitation of single refrigeration mode of the existing beverage preparation equipment; and solves the problems of large procurement and maintenance costs, large equipment footprint and energy consumption stacking due to the limitation of the existing beverage preparation equipment which forces commercial scenarios to configure multiple independent devices.

[0005] To achieve the above purposes, the technical scheme adopted by the present application is as follows: A single-compressor double-cold-source refrigeration system suitable for beverage preparation equipment, comprising: a beverage preparation equipment; the beverage preparation equipment comprises a compressor, a refrigerator refrigeration unit and a cold water refrigeration unit; the output end of the compressor is connected with the refrigerator refrigeration unit and the cold water refrigeration unit respectively, and the compressor is used to drive the refrigerator refrigeration unit to provide refrigeration for the refrigerator and drive the cold water refrigeration unit to prepare cold water; The refrigerator refrigeration unit comprises: a refrigerator evaporator, a first capillary tube and a first electromagnetic valve; The cold water refrigeration unit comprises a cold water evaporator, a second capillary, a cold water circulating pump and a second electromagnetic valve; The cabinet body of the beverage making device is respectively provided with a storage chamber, a back refrigeration chamber and a bottom unit chamber; the back refrigeration chamber is provided with a refrigerator evaporator, a cold water evaporator, a fan, a cold water circulating pump, a first capillary, a first electromagnetic valve, a second capillary and a second electromagnetic valve; The bottom unit chamber is provided with a compressor, a gas-liquid separator, a heat energy heat recovery device, a forced evaporation condensate water device, a condenser and a drying filter.

[0006] Further, the output end of the compressor is communicated with the input end of the forced evaporation condensate water device through a pipeline; the output end of the forced evaporation condensate water device is communicated with the input end of the condenser through a pipeline; the output end of the condenser is connected with the input end of the drying filter through a pipeline; The input end of the compressor is communicated with the output end of the heat energy recovery heat exchange device through a pipeline; the input end of the heat energy recovery heat exchange device is communicated with the output end of the gas-liquid separator through a pipeline.

[0007] Further, the refrigerator refrigeration unit forms a refrigerant circulation loop of the refrigerator branch through the compressor, the forced evaporation condensate water device, the condenser, the drying filter, the first electromagnetic valve, the first capillary, the refrigerator evaporator, the gas-liquid separator and the heat energy recovery heat exchange device through a pipeline in series.

[0008] Further, the output end of the drying filter is connected with the input end of the first electromagnetic valve through a pipeline; the output end of the first electromagnetic valve is connected with the input end of the first capillary; the output end of the first capillary is communicated with the input end of the refrigerator evaporator through a pipeline; the output end of the refrigerator evaporator is connected with the input end of the gas-liquid separator through a pipeline.

[0009] Further, the cold water refrigeration unit forms a refrigerant circulation loop of the cold water branch through the compressor, the forced evaporation condensate water device, the condenser, the drying filter, the second electromagnetic valve, the second capillary, the cold water evaporator, the gas-liquid separator and the heat energy recovery heat exchange device through a pipeline in series.

[0010] Further, the output end of the drying filter is connected with the input end of the second electromagnetic valve through a pipeline; the output end of the second electromagnetic valve is connected with the input end of the second capillary; the output end of the second capillary is communicated with the input end of the cold water evaporator through a pipeline; the output end of the cold water evaporator is connected with the input end of the gas-liquid separator through a pipeline; the cold water evaporator is provided with a cold water circulating pump connected through a circulating pipeline.

[0011] Further, the pipeline of the output end of the drying filter is communicated with the input ends of the first electromagnetic valve and the second electromagnetic valve through a three-way joint respectively.

[0012] Further, the cold water evaporator adopts SUS304 food-grade stainless steel material.

[0013] Further, a fan is arranged above the refrigerator evaporator in the back cooling chamber, for accelerating the air flow around the refrigerator evaporator.

[0014] The present application has the advantages of: The single-compressor double-cold-source refrigeration system suitable for beverage preparation equipment has a composite structure design of single compressor combined with double evaporators (cold water evaporator and refrigerator evaporator), which greatly saves installation space and improves refrigeration efficiency; the cold water tank has a cold storage function by virtue of the in-cabinet installation design of the cold water evaporator, so that energy saving and consumption reduction are realized, the cabinet temperature fluctuation and the number of compressor start-stop are reduced, and the service life and stability of the refrigeration system are prolonged.

[0015] The present application optimizes load distribution by combining gas-liquid separator, heat energy recovery, forced evaporation of condensate water and other structures, guarantees the stable operation of single air cooling, single water cooling and composite refrigeration modes and improves energy efficiency; at the same time, it can adapt to the cold storage and heat preservation needs of packaged beverages such as bottled, canned and bagged, as well as direct drinking water, divided or bulk cold drinks, and has a wide range of applications. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Fig. 1 It is a schematic diagram of the back section of the present application.

[0018] Fig. 2 It is a schematic diagram of the left section of the present application.

[0019] Fig. 3 It is a schematic diagram of the circulation pipeline connection of the present application.

[0020] Explanation of reference numerals: 1, compressor; 2, refrigerator evaporator; 3, cold water evaporator; 4, fan; 5, first capillary tube; 6, second capillary tube; 7, gas-liquid separator; 8, heat energy recovery heat exchange device; 9, forced evaporation condensate water device; 10, heat preservation tank. DETAILED DESCRIPTION

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0026] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0028] like Figs. 1-3 As shown, the present invention provides a technical solution: a single-compressor dual-cold-source refrigeration system suitable for beverage making equipment, comprising: beverage making equipment; the beverage making equipment includes a compressor 1, a freezer refrigeration unit and a cold water refrigeration unit; the output end of the compressor 1 is connected to the freezer refrigeration unit and the cold water refrigeration unit respectively, and the compressor 1 is used to drive the freezer refrigeration unit to provide refrigeration for the freezer and drive the cold water refrigeration unit to prepare cold water; The refrigeration unit of the freezer includes: a freezer evaporator 2, a first capillary tube 5, and a first solenoid valve; The chilled water refrigeration unit includes: a chilled water evaporator 3, a second capillary tube 6, a chilled water circulation pump, and a second solenoid valve; The beverage making equipment cabinet is respectively provided with a storage chamber, a back refrigeration chamber and a bottom unit chamber; the back refrigeration chamber is provided with a freezer evaporator 2, a cold water evaporator 3, a fan 4, a cold water circulation pump, a first capillary tube 5, a first solenoid valve, a second capillary tube 6 and a second solenoid valve. The bottom unit chamber is equipped with a compressor 1, a gas-liquid separator 7, a heat exchange and recovery device 8, a forced evaporation condensate device 9, a condenser, and a dryer filter.

[0029] The output end of the compressor 1 is connected to the input end of the forced evaporation condensate device 9 via a pipeline; the output end of the forced evaporation condensate device 9 is connected to the input end of the condenser via a pipeline; the output end of the condenser is connected to the input end of the dryer filter via a pipeline. The input end of the compressor 1 is connected to the output end of the heat recovery heat exchange device 8 through a pipeline; the input end of the heat recovery heat exchange device 8 is connected to the output end of the gas-liquid separator 7 through a pipeline.

[0030] The refrigeration unit of the freezer is connected in series through a pipeline to form a refrigerant circulation loop for the freezer branch. The refrigerant circulation loop consists of a compressor 1, a forced evaporation condensate device 9, a condenser, a dryer filter, a first solenoid valve, a first capillary tube 5, a freezer evaporator 2, a gas-liquid separator 7, and a heat recovery heat exchange device 8.

[0031] The output end of the drying filter is connected to the input end of the first solenoid valve through a pipeline; the output end of the first solenoid valve is connected to the input end of the first capillary tube 5; the output end of the first capillary tube 5 is connected to the input end of the freezer evaporator 2 through a pipeline; and the output end of the freezer evaporator 2 is connected to the input end of the gas-liquid separator 7 through a pipeline.

[0032] The chilled water refrigeration unit forms a refrigerant circulation loop of chilled water branch through a series of pipes, including compressor 1, forced evaporation condensate device 9, condenser, dryer filter, second solenoid valve, second capillary tube 6, chilled water evaporator 3, gas-liquid separator 7 and heat recovery heat exchange device 8.

[0033] The output end of the dryer filter is connected to the input end of the second solenoid valve through a pipeline; the output end of the second solenoid valve is connected to the input end of the second capillary tube 6; the output end of the second capillary tube 6 is connected to the input end of the cold water evaporator 3 through a pipeline; the output end of the cold water evaporator 3 is connected to the input end of the gas-liquid separator 7 through a pipeline; a cold water circulation pump is connected to the cold water evaporator 3 through a circulation pipeline.

[0034] The pipeline at the output end of the dryer filter is connected to the input ends of the first solenoid valve and the second solenoid valve respectively via a tee.

[0035] The cold water evaporator 3 is made of SUS304 food-grade stainless steel.

[0036] A fan 4 is located above the evaporator 1 in the rear refrigeration chamber to accelerate the airflow around the evaporator.

[0037] The outer shell of the beverage making equipment cabinet is set as an insulated box 10.

[0038] The present invention provides a single-compressor dual-cold-source refrigeration system suitable for beverage making equipment. It adopts an integrated structure of a freezer evaporator 2 and a cold water evaporator 3, and drives the refrigerant circulation through a one-to-two refrigeration system. The one-to-two refrigeration system is equipped with a flow distribution device consisting of a three-way valve, a solenoid valve, and matching capillary tubes of different diameters and lengths. The refrigerant is divided into two paths by the diversion device: one path is introduced into the water-cooled coil to cool the beverage in the cold water tank, and at the same time, the beverage is circulated and cooled by the circulating water pump; the other path is introduced into the air-cooled evaporator, and the air is circulated and cooled by the fan 4. The cold water evaporator 3 and the freezer evaporator 2 are both arranged in the space of the insulated cabinet 10 to achieve synchronous cooling inside the cabinet. The temperature of the two refrigeration branches is controlled by a dedicated dual-circuit thermostat: when the temperature of one branch reaches the set value, the solenoid valve of the corresponding branch closes, and the refrigerant in that branch stops refrigeration, while the other branch continues to refrigerate until the set temperature is reached. At this time, the solenoid valve of the corresponding branch closes, and the compressor stops. When the temperature of either branch rises to the set upper limit, the solenoid valve of the corresponding branch opens and the compressor starts, restoring refrigeration. The gas-liquid separator 7 temporarily stores excess liquid refrigerant in the system to maintain a stable refrigerant flow rate; the heat recovery heat exchanger 8 recovers the high temperature of the compressor 1 exhaust pipe and increases the temperature of the compressor 1 return pipe to prevent excessive liquid refrigerant from entering the compressor and causing liquid slugging when operating in a single circuit. The forced evaporation condensate water device 9 is used to recover the waste heat from the exhaust pipe of the compressor 1 and evaporate the condensate water formed during defrosting of the system to assist the condenser in cooling down; the cold water tank serves as a constant temperature cold storage device for the freezer, reducing cabinet temperature fluctuations and the number of compressor start-stop cycles. By using capillary tubes of different thicknesses and lengths to achieve system throttling, combined with the liquid refrigerant separation function of the gas-liquid separator 7, the return gas temperature enhancement function of the condenser heat recovery, and the forced evaporation function of the condensate water of the high-temperature condenser tube, the system load is reasonably distributed to achieve stable operation in single air cooling, single water cooling, and water-cooled air cooling combined refrigeration modes.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A single compressor dual cold source refrigeration system suitable for use in a beverage dispensing apparatus, characterized in that, The application relates to a beverage making device. The beverage making device comprises a compressor (1), a refrigerator refrigerating unit and a cold water refrigerating unit; the output end of the compressor (1) is connected with the refrigerator refrigerating unit and the cold water refrigerating unit respectively; the compressor (1) is used for driving the refrigerator refrigerating unit to provide refrigeration for the refrigerator and driving the cold water refrigerating unit to prepare cold water. The refrigerator refrigerating unit comprises a refrigerator evaporator (2), a first capillary (5) and a first electromagnetic valve. The cold water refrigerating unit comprises a cold water evaporator (3), a second capillary (6), a cold water circulating pump and a second electromagnetic valve. The beverage making device cabinet is provided with a storage chamber, a back refrigerating chamber and a bottom unit chamber respectively; the back refrigerating chamber is provided with the refrigerator evaporator (2), the cold water evaporator (3), a fan (4), the cold water circulating pump, the first capillary (5), the first electromagnetic valve, the second capillary (6) and the second electromagnetic valve. The bottom unit chamber is provided with the compressor (1), a gas-liquid separator (7), a heat energy heat recovery device (8), a forced evaporation condensate water device (9), a condenser and a drying filter. The output end of the compressor (1) is communicated with the input end of the forced evaporation condensate water device (9) through a pipeline; the output end of the forced evaporation condensate water device (9) is communicated with the input end of the condenser through a pipeline; the output end of the condenser is connected with the input end of the drying filter through a pipeline.

2. A single compressor dual cold source refrigeration system suitable for use in a beverage dispensing apparatus according to claim 1, wherein, The input end of the compressor (1) is communicated with the output end of the heat energy recovery heat exchange device (8) through a pipeline; the input end of the heat energy recovery heat exchange device (8) is communicated with the output end of the gas-liquid separator (7) through a pipeline. The refrigerator refrigerating unit forms a refrigerant circulation loop of a refrigerator branch through the compressor (1), the forced evaporation condensate water device (9), the condenser, the drying filter, the first electromagnetic valve, the first capillary (5), the refrigerator evaporator (2), the gas-liquid separator (7) and the heat energy recovery heat exchange device (8) through a pipeline in series.

3. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus according to claim 1, wherein, The output end of the drying filter is connected with the input end of the first electromagnetic valve through a pipeline; the output end of the first electromagnetic valve is connected with the input end of the first capillary (5); the output end of the first capillary (5) is communicated with the input end of the refrigerator evaporator (2) through a pipeline; the output end of the refrigerator evaporator (2) is connected with the input end of the gas-liquid separator (7) through a pipeline.

4. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus according to claim 1, wherein, The cold water refrigerating unit forms a refrigerant circulation loop of a cold water branch through the compressor (1), the forced evaporation condensate water device (9), the condenser, the drying filter, the second electromagnetic valve, the second capillary (6), the cold water evaporator (3), the gas-liquid separator (7) and the heat energy recovery heat exchange device (8) through a pipeline in series.

5. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus as defined in claim 1 wherein, ​ 6. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus as defined in claim 1 wherein, The output end of the drying filter is connected with the input end of the second electromagnetic valve through a pipeline; the output end of the second electromagnetic valve is connected with the input end of the second capillary tube (6); the output end of the second capillary tube (6) is communicated with the input end of the cold water evaporator (3) through a pipeline; the output end of the cold water evaporator (3) is connected with the input end of the gas-liquid separator (7) through a pipeline; and the cold water evaporator (3) is provided with a cold water circulating pump through a circulating pipeline.

7. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus as defined in claim 1 wherein, The pipeline of the output end of the drying filter is communicated with the input ends of the first electromagnetic valve and the second electromagnetic valve through a tee joint respectively.

8. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus as defined in claim 1 wherein, The cold water evaporator (3) is made of SUS304 food-grade stainless steel.

9. A single compressor dual cold source refrigeration system for a beverage dispensing apparatus as defined in claim 1 wherein, A fan (4) is arranged above the refrigerator evaporator (1) in the back cooling cavity, for accelerating the air flow around the refrigerator evaporator.

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