Combined display freezer

Abstract

The present invention discloses a combined display freezer, comprising a cabinet body and a first refrigeration device, a plurality of display windows are distributed on the two side walls of the cabinet body along the length direction of the cabinet body, and further comprising a second refrigeration device for refrigerating to quickly cool the display windows and a cold storage device for interacting with the first refrigeration device for cold capacity, the cold storage device comprising a cold storage pipe group, the cabinet body having a chamber for accommodating the cold storage pipe group, the cold storage pipe group being filled with cold storage liquid for interacting with the cold storage device to reduce the temperature of the display window and store cold. The present invention solves the problems of excessive energy consumption, poor thermal insulation performance, and high power consumption and difficult to control electricity costs of integrated refrigerated display cabinets in traditional supermarkets.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerated display cabinets, in particular to a combined display refrigerated cabinet. Background Art

[0002] Traditional supermarkets often use several independent display freezers to display refrigerated goods, such as fresh produce and food. Each independent freezer is equipped with an independent refrigeration device, which allows the interior of the display freezer to reach a temperature range suitable for storing refrigerated goods. When multiple display freezers are operated simultaneously, their energy consumption increases sharply, which increases the electricity consumption of the supermarket and significantly increases the operating costs. In addition, when consumers take goods out of the display freezer, they frequently open and close the cabinet doors, which causes the cold in the display freezer to evaporate easily. The refrigeration system itself is difficult to replenish the cold in time or the cold replenishment efficiency is low, causing some goods to be affected by temperature imbalance and not in the appropriate temperature range, resulting in bacterial growth or damage to the goods. At the same time, the placement of several independent display freezers also affects the space of the supermarket itself, further reducing the operating space of the supermarket itself, resulting in a further reduction in the operating efficiency of the supermarket in a limited space.

[0003] The prior art discloses an insulation structure of a post-supplement cold storage with application number 202222091045.7, which relates to the technical field of cold storage. It also has a cold storage area and a display area. This patent mainly focuses on optimizing the insulation function of the cold storage and the integrated design of the cold storage and the display cabinet. The cold storage area and the display area are combined to reduce the operating space occupied by multiple display cabinets, and multiple isolation doors and movable isolation passages are set in the cold storage area and the display area to reduce the loss of cold air during picking up or replenishing. The structure is relatively simple, that is, this patent mainly solves the problem of local insulation during the process of picking up or replenishing. Although the loss of cold air is reduced to a certain extent, the overall energy consumption caused by the operation of the refrigeration equipment is not taken into consideration, and the energy-saving effect is also limited to the interior of the cold storage. At the same time, the cold amount released by the refrigeration equipment in the above technology can only reach the refrigeration range, and cannot reach the freezing range, and thus frozen goods cannot be stored.

[0004] Based on the above content, the prior art also discloses an integrated cabinet with display and freezing with application number 201410617437.X. This patent discloses a technology with a cabinet body having independent freezing chambers and display cabinets, which realizes cold exchange through a refrigeration heat exchanger and a freezing heat exchanger. Although this patent integrates the freezing and display functions, mainly by sharing a cooling source to save resources to a certain extent, it does not deeply consider optimizing the refrigeration device to adapt to the difference in electricity costs at different times, that is, the freezing chamber and the display chamber share a compressor, and its refrigeration efficiency cannot reach the optimal state under different usage requirements. For example, when the freezing chamber needs to cool down quickly to freeze a large number of items, its refrigeration system cannot cool down quickly, which affects the temperature stability of the display chamber, or in order to meet the temperature requirements of the two chambers, the compressor needs to operate frequently, thereby increasing energy consumption. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a combined display freezer to solve the problems of excessive energy consumption, poor thermal insulation performance, high power consumption and difficult to control electricity costs of integrated freezer display cabinets in traditional supermarkets.

[0006] To achieve the above-mentioned purpose, the present invention provides a combined display freezer, including a cabinet body and a first refrigeration device, a plurality of display windows are distributed on the two side walls of the cabinet body along the length direction of the cabinet body, and also includes a second refrigeration device for refrigeration to quickly cool the display windows and a cold storage device for interacting with the first refrigeration device for cold energy, the cold storage device includes a cold storage tube group, the cabinet body has a cavity for accommodating the cold storage tube group, and the cold storage tube group is filled with cold storage liquid for interacting with the cold storage device to reduce the temperature of the display windows and store cold energy.

[0007] The above technical solution is beneficial in that: when the combined display freezer is opened, the second refrigeration device starts to work first, and uses its rapid refrigeration characteristics to quickly cool the cabinet and quickly reach a relatively low temperature range, laying the foundation for subsequent refrigeration and display work. As the cabinet temperature initially decreases, the first refrigeration device starts to operate, and the cold energy generated by it interacts with the cold storage device, that is, the cold energy is transmitted to the cold storage device so that the cold storage liquid in the cold storage pipe group absorbs the cold energy. When the cabinet temperature reaches the set requirement and is relatively stable, the second refrigeration device can be suspended. If the temperature demand or business demand causes the first refrigeration device to be temporarily stopped, the cold storage liquid stored in the cold storage device begins to release the cold energy, and continues to maintain the low temperature of the cabinet and the display window, ensuring that the temperature in the display freezer is constant; that is, during the peak power period during the day, the cold energy stored in the cold storage device is preferentially used to maintain the low temperature inside the cabinet, and several display windows are connected to the inside of the cabinet, thereby maintaining the low temperature of several display windows, thereby reducing the electricity cost during the peak power period; if the cold energy released by the cold storage device is not enough to maintain the temperature, the first refrigeration device is started in time to increase The cold energy interaction between the first refrigeration device and the cold storage liquid enables the cold storage liquid in the cold storage tube group to release cold energy to reduce the internal temperature of the cabinet. The cold energy released by the cold storage device realizes the supply of cold energy inside the cabinet, so as to keep the internal temperature of the cabinet always within the freezing temperature range, thereby reducing the dependence on high-cost electricity. In the above technology, the cold energy is released during the peak power period to maintain the low temperature environment of the display window, which realizes efficient cold energy management and effectively reduces the overall electricity cost. The synergistic effect of the first refrigeration device and the cold storage device can accurately control the temperature of the display window so that it is always kept in a low temperature environment suitable for the storage of frozen goods. In the above technology, the setting of the second refrigeration device realizes the rapid cooling of the cabinet, greatly shortens the time to reach the appropriate temperature, improves the overall refrigeration efficiency, and cooperates with the first refrigeration device to quickly and stably create a low temperature environment suitable for frozen display. Compared with traditional display equipment, the above technology has smaller temperature fluctuations and can effectively inhibit bacterial growth and microbial activity, thereby extending the shelf life of frozen goods, reducing commodity losses, ensuring commodity quality, and reducing economic losses caused by commodity deterioration.

[0008] The integrated design of the combined display freezer in the above technology, compared with the traditional layout of multiple independent display cabinets or the decentralized layout of large integrated display cabinets and cold storage, can more effectively utilize the site space under the same display and storage function requirements, significantly reducing the site rental cost. For small supermarkets, this advantage is more prominent, which helps to improve their operating efficiency in limited space. At the same time, the reduction in energy consumption is directly converted into a reduction in electricity costs, and the efficient replenishment design, such as the display windows on both sides of the cabinet, makes the replenishment operation more convenient and fast, reducing the labor time and labor intensity required for replenishment, which not only reduces labor costs, but also improves replenishment efficiency, and further optimizes the overall operating cost structure; the combined display freezer of the present invention has a high degree of flexibility and scalability in structure and function design. For small supermarkets, its compact structure, energy-saving characteristics and low cost can well adapt to its limited space and cost control requirements; for medium and large supermarkets, its large display and storage capacity, efficient refrigeration and replenishment system can also meet the needs of large-scale commodity display and sales, with a wide range of market adaptability, can be applied to retail business scenes of various sizes and types.

[0009] The present invention is further configured as follows: the first refrigeration device includes a compressor, a first condenser, and a heat exchanger, the compressor is arranged in conjunction with the first condenser, the first condenser is arranged in conjunction with the heat exchanger, the cold storage device also includes a liquid tank storing cold storage liquid, a circulation pipeline connecting the liquid tank and the cold storage pipe group, and a circulation pump connected to the circulation pipeline to circulate the cold storage liquid, and the liquid tank is arranged in conjunction with the heat exchanger.

[0010] The advantages of adopting the above technical solution are as follows: in the above technology, a liquid infusion pipeline is connected between the compressor and the first condenser for conveying the high-temperature and high-pressure refrigerant gas discharged from the compressor to the first condenser for heat dissipation and liquefaction; a flow pipeline is connected between the first condenser and the heat exchanger for allowing the refrigerant liquefied by the first condenser to flow into the heat exchanger under the action of the pressure difference and for the liquefied refrigerant to exchange cold with the cold storage liquid; a conveying pipeline is connected between the liquid tank and the heat exchanger for conveying the cold storage liquid in the liquid tank to the heat exchanger; the heat exchanger is provided with a first interaction pipeline for the cold storage liquid to flow for cold exchange with the refrigerant and a second interaction pipeline for the refrigerant to flow for cold exchange with the cold storage liquid; when the temperature sensor in the cabinet detects that the temperature of the chamber or the display window is higher than the set threshold value, the first refrigeration device is started, the compressor starts working, and the low-temperature and low-pressure gaseous The refrigerant is inhaled, and the compressor compresses the inhaled gaseous refrigerant, and converts it into a high-temperature and high-pressure gaseous refrigerant by doing work on the refrigerant. The high-temperature and high-pressure gaseous refrigerant compressed by the compressor is transported to the first condenser through the infusion pipeline. In the first condenser, the high-temperature and high-pressure gaseous refrigerant exchanges heat with the cooling water. Since the temperature of the cooling water is relatively low, the refrigerant transfers heat to the cooling water and gradually cools and liquefies itself. The cooling water in the first condenser circulates continuously, taking away the heat of the refrigerant, causing the refrigerant to be converted into a high-temperature and high-pressure liquid refrigerant in this process, and then the high-temperature and high-pressure liquid refrigerant is converted into a low-temperature and low-pressure liquid refrigerant through the expansion valve processing in the first condenser. Under the action of the pressure difference, the low-temperature and low-pressure liquid refrigerant flows into the heat exchanger through the circulation pipeline. In the heat exchanger, the low-temperature and low-pressure liquid refrigerant exchanges cold with the cold storage liquid. Because the refrigerant temperature is lower than the cold storage liquid temperature, the refrigerant absorbs the heat emitted by the cold storage liquid. At this time, the cold storage liquid gradually cools down until it reaches the freezing temperature. The cold storage liquid is transferred to the cold storage pipe group through the heat exchanger, and the circulating pump returns the warmed cold storage liquid in the cold storage pipe group to the liquid tank, so that the subsequent liquid tank can transfer the cold storage liquid to the heat exchanger through the circulation pipeline for cold exchange. After the cold exchange of the heat exchanger, the low-temperature and low-pressure liquid refrigerant will be converted into a low-temperature and low-pressure gaseous refrigerant and return to the compressor for subsequent circulation; during the daytime peak power period, according to the preset program, the cold stored in the cold storage device can be used first to maintain the low temperature of the display window, and the circulation of the cold storage liquid can be accelerated by the circulating pump, so that the cold storage pipe group releases cold energy, reducing the operating time of the compressor and the chiller, and reducing the electricity cost during the peak power period. At the same time, if the cold energy released by the cold storage device is not enough to maintain the temperature, the compressor is started in time for supplementary cooling.

[0011] The coordinated work of the various components of the refrigeration device in the above technology, through the cooperation of the compressor, the first condenser and the heat exchanger, can accurately control the state and temperature of the refrigerant to achieve efficient refrigeration, wherein the compressor provides power to circulate the refrigerant in the system, the first condenser effectively dissipates heat and liquefies the refrigerant, and the heat exchanger allows the refrigerant and the cold storage liquid to enter and interact with each other, so that the refrigerant evaporates and absorbs heat and reduces the temperature of the cold storage liquid. The connection design between the heat exchanger and the cold storage pipe group further optimizes the distribution and utilization of cold energy, so that the refrigeration device can flexibly adjust the cold output according to actual needs, improve the refrigeration efficiency, and reduce energy waste. The liquid tank, circulating pump and cold storage pipe group in the cold storage device can stably The cold storage liquid is stored and transported in a certain way. When the refrigeration device is refrigerating, the cold storage liquid waits for cold exchange in the heat exchanger, and is transmitted to the cold storage pipe group through the exchanged cold storage liquid for circulation, so that the cold storage liquid absorbs and stores cold energy. When the refrigeration capacity of the refrigeration device decreases or it is in the peak power period and other situations where energy consumption needs to be reduced, the cold storage device can continuously release cold energy to maintain the low temperature environment of the display window, ensure that the quality of frozen goods is not affected, and achieve the "peak shaving and valley filling" of cold energy, thereby improving the reliability and stability of the entire system. The controller group controls the chiller so that the refrigeration device can flexibly adjust the refrigeration parameters and operation mode according to different environmental conditions, time settings and load requirements. For example, during low-load periods or at night, the refrigeration power can be appropriately reduced to achieve energy-saving operation. At the same time, combined with the cold storage device releasing cold energy during peak power periods, the difference in electricity prices is effectively utilized to reduce electricity costs.

[0012] The first refrigeration device in the above technology is the existing technology, and the corresponding refrigeration device can be selected according to the actual operation requirements, such as a steam absorption refrigeration device, an air cooling device, a water cooling device, etc. The traditional refrigeration device includes a control component for opening and closing the corresponding components. The controller component may include two-position regulators such as temperature relays and pressure relays, as well as various regulating valves. At the same time, the controller itself can adopt a programmable controller or an intelligent controller, etc. Because it is the existing technology, its structure and function will not be described in detail.

[0013] The present invention further provides that: the second refrigeration device includes a second condenser and a cooling fan arranged in the chamber.

[0014] The advantages of adopting the above technical solution are: the second condenser in the above technology also includes fins and heat exchange tubes. When the combined display freezer is turned on the rapid cooling mode, the second refrigeration device is started, and the air cooler starts working first. The air cooler generates forced airflow to promote the flow of chamber air and make it flow through the heat exchange tubes with fins. In the second condenser, the low-temperature refrigerant flows in the heat exchange tubes. As the air cooler drives the air to flow through the fins and heat exchange tubes, the air exchanges heat with the refrigerant in the heat exchange tubes. Since the refrigerant temperature is lower than the air in the chamber, the heat of the air is transferred to the refrigerant, which reduces the air temperature. The low-temperature air cooled by the superheat exchange is guided to the internal space of the cabinet. The low-temperature air flows inside the cabinet, mixes and transfers heat with the hot air inside the cabinet, thereby taking away the heat inside the cabinet, achieving the goal of cooling the air inside the cabinet. Rapid cooling between the cabinets; in the above technology, forced convection of air is driven by a cold air fan, which greatly improves the heat exchange efficiency between the air and the refrigerant in the heat exchange tube. Compared with natural convection, the air can be cooled more quickly and the low-temperature air is transported to the inside of the cabinet, so as to achieve rapid cooling of the space inside the cabinet and meet the demand for rapid refrigeration. The second condenser and its linkage structure in the above technology are both prior art, so their specific operating principles and structures are not described in detail; the second refrigeration device in the above technology is prior art, which can be an air-cooled refrigeration system or an air-cooled refrigeration unit, or an air-cooled condenser unit, which can be adjusted according to actual production and use requirements. The traditional air-cooled refrigeration system also includes a compression module, an evaporator module, and an expansion valve module. Because it is a prior art, its compression and refrigeration process is not described in detail.

[0015] The present invention is further provided with: drainage channels are opened on the inner walls on both sides of the cabinet along the length direction of the cabinet, the ends of the drainage channels are connected with drainage pipes, the drainage channels are arranged to be inclined relative to the bottom wall of the chamber, the inclination direction of the drainage channels is inclined toward the bottom wall of the chamber from the starting end of the drainage channels to the end of the drainage channels, a water baffle is arranged in the chamber, the radial cross-section of the water baffle is arranged in a circular arc, the water baffle is composed of a raised portion and two ends, the two ends of the water baffle are respectively connected to the two side walls of the chamber, the two ends of the water baffle are respectively arranged below the corresponding drainage channels, and the water baffle is arranged directly below the cold storage pipeline.

[0016] The advantages of adopting the above technical solution are as follows: the drainage channels opened along the length direction of the two side walls of the chamber, together with the drainage pipe at the rear end, form a complete and smooth drainage system; the drainage channels are inclined, and are inclined toward the bottom wall of the chamber from the beginning to the end of the drainage channels, so that the accumulated water in the chamber can be quickly gathered and flowed to the drainage pipe by gravity, and the chamber can be efficiently discharged, thereby preventing the accumulated water from being retained in the chamber for a long time, avoiding damage to the quality of the displayed frozen products due to water accumulation, and ensuring that the storage environment of the products is always in a dry and suitable state; the circular arc radial cross-section design of the water retaining plate, the bulge and the two ends work together, It can collect condensed water in the chamber more efficiently, and guide the water mist condensed on the outer wall of the energy storage tube when the energy storage tube releases cold energy. That is, when the water mist condenses into water droplets, it will drip on the water baffle and flow along the arc direction of the water baffle until it reaches the drainage channel, thereby preventing the water droplets from dripping onto the frozen goods and affecting the outer packaging of the goods; especially in a freezing environment, both the energy storage tube and the cold storage cylinder will frost, and the long-term frosting and defrosting process may make the surface of the pipeline rough, affecting the heat exchange efficiency between the refrigerant and the air. At the same time, during the frosting process, dust and impurities in the air may adhere to the frost layer and the surface of the pipeline. Therefore, the energy storage tube and the cold storage cylinder need to be treated with acid. The acid reacts chemically with the dirt and impurities to dissolve or loosen them, making it easier to clean them later. The acid can slightly corrode the surface of the pipe, making the rough surface relatively smooth, reducing the resistance to air flow, and also facilitating heat transfer. That is, after removing dirt and impurities and improving the surface condition of the pipe, the heat transfer efficiency between the refrigerant and the air is improved. The smoother surface is conducive to full contact between the air and the pipe, making the heat transfer smoother, just like in the second refrigeration device, the improvement of heat exchange efficiency means This means that the air can be cooled more efficiently, and the internal space of the cabinet can be cooled more quickly. The dirt and impurities on the surface of the pipeline can be cleaned in time to avoid their long-term corrosion to the pipeline. At the same time, the improved surface condition of the pipeline reduces the mechanical damage to the pipeline caused by frosting and defrosting, which helps to extend the service life of the equipment. Based on the above description, the drainage channel and the water baffle are set to prevent the acid from overflowing into the chamber during acid brushing and corroding the goods and causing damage to the goods, and to prevent the acid from overflowing and causing damage to the cabinet structure, that is, the drainage channel and the water baffle are set to concentrate the acid after acid brushing. .

[0017] The present invention further provides: a walking board is provided in the chamber, the walking board divides the chamber into a freezing area and a storage area, the walking board is composed of a plurality of cross bars and a plurality of longitudinal bars staggered and connected to each other, and a plurality of the longitudinal bars and a plurality of cross bars are combined to form a plurality of placement grids for placing external frozen goods into the storage area.

[0018] The advantages of adopting the above technical solution are as follows: the walking board in the above technology divides the chamber into a freezing area and a storage area, achieving a clear division of functional areas. The freezing area focuses on providing a stable low-temperature environment for the display window to ensure the display and preservation of frozen goods; the storage area is used to store spare goods, packaging materials and other items to avoid them occupying the valuable space in the freezing area, making the refrigeration efficiency of the freezing area higher, and making the entire chamber space more scientific and orderly. At the same time, the placement grid formed by the staggered horizontal and vertical bars on the walking board provides great convenience for replenishment personnel. When replenishing, external frozen goods can be placed accurately and firmly in the grid without having to find a suitable position or worry about the goods slipping. When the operator moves on the walking board, he can take the goods from the storage area and replenish them to the display window in the freezing area, which simplifies the replenishment process, shortens the replenishment time, and improves the overall replenishment efficiency; and the hollow grid structure of the walking board will not hinder the circulation of air in the chamber. Cold air can smoothly pass through the grid and circulate between the freezing area and the storage area, so that the spare goods in the storage area can also be kept in a relatively low temperature environment, avoiding the situation where the storage area temperature is too high and affects the quality of the frozen goods, and helping to maintain a balanced and stable temperature in the entire chamber.

[0019] The present invention is further configured as follows: a plurality of the cross bars correspond one to one with a plurality of the longitudinal bars and the starting end of each cross bar is hingedly arranged on the corresponding longitudinal bar, each cross bar is swingably arranged in the corresponding placement grid, and a buckling plate for buckling on the top wall of the adjacent longitudinal bar is arranged at the end of each cross bar, the buckling plate is connected to the top wall of the cross bar, and the top wall of the cross bar is arranged flush with the top wall of the longitudinal bar.

[0020] The advantages of adopting the above technical solution are: the horizontal bar and the vertical bar are connected by hinges, so that the horizontal bar can swing flexibly in the corresponding placement grid. This design breaks the limitations of the traditional fixed structure. When larger frozen goods need to be placed, the operator can easily swing the horizontal bar to expand the space of the placement grid as needed, adapt to the storage needs of goods of different specifications, improve the space utilization of the chamber storage area, and reduce the problem of messy goods stacking due to space limitations; at the same time, when taking out the goods, the operator does not need to lift or cross the horizontal bar with effort, but only needs to gently push the horizontal bar open, and it can swing with the hinge as the axis, reducing operational obstacles, making replenishment and retrieval of goods faster and smoother, and further improving the efficiency of replenishment and sorting, so as to meet the needs of small and medium-sized supermarkets.

[0021] The present invention is further provided that: the bottom of the two side walls of the cabinet body extends outward to form a protrusion, the display window is composed of a vertical window and a horizontal window, the vertical window is arranged on the side wall of the cabinet body, and the horizontal window is arranged on the protrusion, each of the horizontal windows is arranged directly below the corresponding vertical window, the horizontal window is hollow to form a cavity connected to the chamber, the cavity is provided with a cargo plate for placing external frozen goods, and the cavity is connected to the chamber.

[0022] The benefits of adopting the above technical solution are: by dividing the display windows into vertical windows and horizontal windows, the vertical space of the cabinet is cleverly utilized, which does not occupy too much extra space and provides more placement space for frozen goods. The cavities are connected to each other, which facilitates the allocation and sorting of goods, so that the storage capacity of the entire cabinet can be significantly improved. Merchants can display a richer variety of frozen goods to meet the diverse purchasing needs of consumers; the layout of the horizontal windows is adjacent to the vertical windows, and the replenishment staff does not need to carry goods over long distances. When the goods in the vertical showcase are sold out and need to be replenished, the staff can quickly take the goods directly from the connected chamber and place them on the cargo board of the horizontal showcase, which simplifies the replenishment process and greatly shortens the replenishment time. Especially during peak sales periods, it can ensure that the shelves are always full and improve the shopping experience. At the same time, the matching design of the horizontal showcase and the vertical showcase makes the display of frozen goods more layered and logical. After consumers are attracted by the vertical showcase, they can see the related goods in the horizontal showcase by moving their eyes downward. This coherent visual presentation helps to deepen consumers' impression of the goods, guide them to understand the product categories more comprehensively, further stimulate consumption desire, and promote sales. Since the cavity is connected to the chamber, the cold air in the chamber can naturally flow into the cavity of the horizontal showcase, ensuring that the temperature in the horizontal showcase matches the overall low temperature environment of the chamber. This avoids the problems of shortened shelf life and quality degradation of goods caused by local temperature differences, provides stable and uniform storage conditions for frozen goods, and prolongs the shelf life of goods. The integrated space utilization design in the above technology reduces the need for additional independent storage equipment. Compared with purchasing multiple scattered refrigerated storage cabinets, this design integrates display and storage functions, which reduces the equipment procurement cost while also reducing the subsequent maintenance and energy consumption costs due to the reduction in the number of equipment, helping supermarkets and other retail places to optimize their operating cost structure.

[0023] The present invention further provides that: two slide rails are relatively arranged in the cavity, the opening direction of the slide rails is arranged in the same direction as the connection direction between the chamber and the cavity, and the two ends of the cargo plate are respectively slidably arranged on the two slide rails.

[0024] The benefits of adopting the above technical solution are: the two slide rails arranged opposite to each other in the cavity, combined with the slidable cargo board, make the storage layout highly flexible. Merchants can easily push and pull the cargo board according to the actual size and quantity of the frozen goods, adjust its position on the slide rail, and allocate the space in the cavity as needed. Whether it is stacking large boxes of frozen goods or displaying small items, they can be quickly adapted to make full use of the cavity space and avoid space waste; at the same time, when replenishing personnel replenish goods in the horizontal display window, the sliding cargo board greatly simplifies the operation process. When new goods need to be replenished, just gently pull the cargo board and slide it out to the appropriate distance, and the goods can be placed on the board without hindrance, and then pushed back to the original position; similarly, when sorting goods and counting inventory, the cargo board can also be easily moved to quickly view and sort the goods in each area, significantly improving the efficiency of replenishment and sorting, and the slidable cargo board provides convenience when consumers choose goods in the horizontal display window. Customers can pull out the cargo board, shorten the distance to themselves, and more easily take their favorite frozen products without having to lean into the cavity, which improves the shopping experience. This design effectively reduces the difficulty of taking products placed deep in the cavity, especially for products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front three-dimensional view of the present invention;

[0026] Figure 2 It is a three-dimensional view of the back side of the present invention;

[0027] Figure 3 A three-dimensional view of the linkage state of the first refrigeration device and the cold storage device in the present invention;

[0028] Figure 4 A simplified three-dimensional view of the second refrigeration device in the present invention;

[0029] Figure 5 It is a partial three-dimensional view of the cabinet in the present invention;

[0030] Figure 6 for Figure 5 Front view of;

[0031] Figure 7 A three-dimensional view of the cold storage tube assembly in the present invention;

[0032] Figure 8 A three-dimensional view of the water retaining plate in the present invention;

[0033] Fig. 9 A three-dimensional view of the walking board in the present invention;

[0034] Fig.10 A three-dimensional view of the cabinet in the present invention;

[0035] Fig.11 for Fig.10 A partial magnified 3D view of section A.

[0036] The symbols in the drawings of the above specification are: cabinet 1, display window 11, vertical window 111, horizontal window 112, cavity 113, cargo board 114, slide rail 115, chamber 12, drain channel 121, water retaining plate 122, drain pipe 13, protrusion 14, first refrigeration device, compressor 21, first condenser 22, heat exchanger 23, cold storage device, cold storage pipe group 31, cold storage pipeline 311, cold storage pipe 312, cold storage cylinder 313, liquid tank 32, circulation pipeline 33, circulation pump 34, second refrigeration device, second condenser 41, air cooler 42, walking board 5, freezing area 51, storage area 52, cross bar 53, buckle plate 531, longitudinal bar 54, placement grid 55. DETAILED DESCRIPTION

[0037] The present invention provides a combined display freezer, comprising a cabinet body 1 and a first refrigeration device, wherein a plurality of display windows 11 are distributed on the two side walls of the cabinet body 1 along the length direction of the cabinet body 1, and the cabinet body 1 is characterized in that the cabinet body 1 also comprises a second refrigeration device for refrigeration to quickly cool down the display windows 11 and a cold storage device for interacting with the first refrigeration device to exchange cold energy, wherein the cold storage device comprises a cold storage pipe group 31, the cabinet body 1 has a chamber 12 for accommodating the cold storage pipe group 31, the cold storage pipe group 31 is filled with cold storage liquid for interacting with the cold storage device to reduce the temperature of the display windows 11 and store cold energy, the first refrigeration device comprises a compressor 21, a first condenser 22, and a heat exchanger 23, the compressor 21 cooperates with the first condenser 22 to cool the display windows 11, and the first condenser 22 is connected to the first condenser 22. The first condenser 22 is arranged in linkage with the heat exchanger 23, the cold storage device also includes a liquid tank 32 storing cold storage liquid, a circulation pipeline 33 for connecting the liquid tank 32 and the cold storage pipe group 31, and a circulation pump 34 for communicating with the circulation pipeline 33 to circulate the cold storage liquid, the liquid tank 32 is arranged in linkage with the heat exchanger 23, the second refrigeration device includes a second condenser 41 and a cold air blower 42 arranged in the chamber 12, drainage channels 121 are opened on the inner walls on both sides of the cabinet 1 along the length direction of the cabinet 1, the end of the drainage channel 121 is connected with a drainage pipe 13, the drainage channel 121 is arranged to be inclined relative to the bottom wall of the chamber 12, and the inclination direction of the drainage channel 121 is from the beginning of the drainage channel 121 to the end of the drainage channel 121 The end is inclined toward the bottom wall of the chamber 12, and a water baffle 122 is arranged in the chamber 12. The radial cross-section of the water baffle 122 is arranged in an arc. The water baffle 122 is composed of a ridge and two end portions. The two end portions of the water baffle 122 are respectively connected to the two side walls of the chamber 12, and the two end portions of the water baffle 122 are respectively arranged below the corresponding drainage channels 121. The water baffle 122 is arranged directly below the cold storage pipeline. A walking board surface 5 is arranged in the chamber 12, and the walking board surface 5 divides the chamber 12 into a freezing area 51 and a storage area 52. The walking board surface 5 is composed of a plurality of cross bars 53 and a plurality of longitudinal bars 54 that are staggered and connected to each other. A plurality of the longitudinal bars 54 and a plurality of cross bars 53 are combined to form a plurality of areas for freezing goods outside A placement grid 55 is placed in the storage area 52, a plurality of the horizontal bars 53 correspond to a plurality of the vertical bars 54 one by one, and the beginning of each horizontal bar 53 is hingedly set on the corresponding vertical bar 54, each of the horizontal bars 53 is swingably set in the corresponding placement grid 55, and a buckling plate 531 for buckling on the top wall of the adjacent vertical bar 54 is set at the end of each horizontal bar 53, and the buckling plate 531 is connected to the top wall of the horizontal bar 53, and the top wall of the horizontal bar 53 is flush with the top wall of the vertical bar 54. The bottom of the two side walls of the cabinet 1 extends outward to form a protrusion 14, and the display window 11 is composed of a vertical window 111 and a horizontal window 112. The vertical window 111 is set on the side wall of the cabinet 1, and the horizontal window 112 is set on the protrusion 14.Each of the horizontal display windows 112 is located directly below the corresponding vertical display window 111. The horizontal display window 112 is hollow and has a cavity 113 connected to the chamber 12. The cavity 113 is provided with a cargo plate 114 for placing external frozen goods. The cavity 113 is connected to the chamber 12. Two slide rails 115 are arranged opposite to each other in the cavity 113. The opening direction of the slide rails 115 is consistent with the connection direction between the chamber 12 and the cavity 113. The two ends of the cargo plate 114 are slidably arranged on the two slide rails 115.

[0038] When the temperature sensor in the cabinet detects that the temperature of the chamber or the display window is higher than the set threshold, the first refrigeration device is started, the compressor starts to work, and the low-temperature and low-pressure gaseous refrigerant is sucked in. The compressor compresses the sucked gaseous refrigerant and converts it into a high-temperature and high-pressure gaseous refrigerant by doing work on the refrigerant. The high-temperature and high-pressure gaseous refrigerant compressed by the compressor is transported to the first condenser through the infusion pipeline. In the first condenser, the high-temperature and high-pressure gaseous refrigerant exchanges heat with the cooling water. Since the temperature of the cooling water is relatively low, the refrigerant transfers heat to the cooling water and gradually cools and liquefies itself. The cooling water in the first condenser circulates continuously, taking away the heat of the refrigerant, so that the refrigerant is converted into a high-temperature and high-pressure liquid refrigerant in this process, and then the high-temperature and high-pressure liquid refrigerant is converted into a low-temperature and low-pressure liquid refrigerant through the expansion valve in the first condenser. Under the action of the pressure difference, the low-temperature and low-pressure liquid refrigerant flows into the heat exchanger through the circulation pipeline. In the heat exchanger, the low-temperature and low-pressure liquid refrigerant exchanges cold with the cold storage liquid. Because the refrigerant temperature is lower than the cold storage liquid temperature, the refrigerant absorbs the heat dissipated by the cold storage liquid. At this time, the cold storage liquid gradually cools down until it reaches the freezing temperature. The cold storage liquid is transmitted to the cold storage pipe group through the heat exchanger, and the circulating pump returns the warmed cold storage liquid in the cold storage pipe group to the liquid tank, so that the subsequent liquid tank can transmit the cold storage liquid to the heat exchanger through the circulation pipeline for cold exchange. After the cold exchange through the heat exchanger, the low-temperature and low-pressure liquid refrigerant will be transformed into a low-temperature and low-pressure gaseous refrigerant and return to the compressor for subsequent circulation.

[0039] In the above technology, the cold storage pipe group can be defined according to the actual operation requirements and cold storage requirements, that is, the cold storage pipe group 31 is composed of at least one layer of cold storage pipeline 311, the cold storage pipeline 311 is composed of a plurality of straight cold storage pipes 312, adjacent cold storage pipes 312 are connected end to end and the cold storage pipes 312 are arranged in a winding S shape, any cold storage pipe 312 in the cold storage pipeline 311 is connected with any cold storage pipe 312 of the adjacent cold storage pipeline 311, and a cold storage cylinder 313 is vertically arranged at the bottom of each cold storage pipe 312 of the cold storage pipeline 311 at the bottom, and each of the cold storage cylinders 313 is connected with the corresponding cold storage pipe 312;

[0040] In the above technology, the cold storage tube group is composed of at least two layers of cold storage pipelines. The multi-layer structure significantly increases the contact area with the cold storage liquid and the retention volume of the cold storage liquid therein, so that more cold energy can be stored. Compared with a single-layer cold storage pipeline, under the same space occupancy, this design can capture and retain more cold energy from the refrigeration device, and provide more sufficient "cold energy reserve" to maintain a low-temperature environment during peak power periods or when the refrigeration device suddenly fails; the energy storage tube is straight, which reduces the additional resistance caused by bending when the refrigerant or cold storage liquid flows in the tube, ensures smooth passage of the fluid, and makes the cold energy transfer more efficient. At the same time, the winding S-shaped pipeline layout greatly extends the flow path of the refrigerant or cold storage liquid, allowing it to have more time for heat exchange in the cold storage pipeline. Whether it is the transfer of cold energy to the cold storage liquid during refrigeration, or the cold storage liquid supplying cold energy to the chamber during the release of cold energy, it can be more sufficient and efficient, reducing the loss of cold energy; the adjacent energy storage tubes are connected end to end, and the energy storage tubes between different cold storage pipelines are also connected to each other. This complex and orderly connection setting allows the cold storage liquid to circulate evenly in the entire cold storage tube group. When the cold energy is stored, the energy storage tubes in various parts can absorb the cold energy evenly; in the cold energy release stage, it can also ensure that the cold energy is evenly distributed from the cold storage tube group to the chamber, avoiding the situation of local cold energy concentration or lack, and creating a stable and consistent low temperature environment for the frozen goods in the display window; thanks to the efficient cold energy storage and uniform distribution characteristics, the stability of the entire refrigeration device is enhanced. When facing the soaring electricity prices during peak hours and relying on cold storage devices to maintain low temperatures, the stable output of cold energy can ensure that the display window temperature has no obvious fluctuations and the quality of the goods is not affected. At the same time, the design of the cold storage pipe group also allows the refrigeration device to better adapt to the changes in refrigeration demand in different seasons and different passenger flow scenarios, and calmly cope with complex and changing usage environments; the clever S-shaped winding layout and multi-layer structure design maximize the cold storage efficiency of the cold storage pipe group in a limited chamber space, avoiding excessive expansion of the equipment volume due to the pursuit of large-capacity cold storage. It not only saves precious supermarket space, but also reduces the material, installation and maintenance costs that may be caused by large-scale equipment, and improves the product's cost-effectiveness and market competitiveness; the cold storage cylinder is vertically set at the bottom of the energy storage tube of the lowest cold storage pipeline. Using its vertical structure, it can use gravity to guide the cold storage liquid and cold capacity to sink and gather naturally. During the refrigeration process, this design is conducive to capturing and retaining the cold that cannot be fully exchanged when flowing in the energy storage tube, making the cold precipitation effect better, further expanding the cold reserve of the entire cold storage device, and ensuring that there is more sufficient "cold capacity" to cope with peak electricity consumption periods or sudden changes in refrigeration demand. At the same time, since the cold storage cylinder is connected to the corresponding energy storage tube, in the cold release stage, the cold stored in the cold storage cylinder can be used as a supplement to cooperate with the energy storage tube to transport cold to the chamber.When the temperature of a local area of ​​the chamber fluctuates due to differences in product placement and air circulation, the cold storage cylinder can "check for leaks and fill gaps" in time, so that the cold energy is released more evenly, and the low temperature environment at each location in the display window is stably maintained to ensure the consistency of the quality of frozen products. The cold storage cylinder increases the storage space and flow path of the cold storage liquid, so that it forms a relatively independent circulation microenvironment in the cylinder that interacts with the energy storage tube. This additional space extension allows more time and contact between the cold storage liquid and the cylinder wall and the energy storage tube, deeply strengthens the heat exchange effect, reduces the waste of cold energy in the transmission process, and improves the energy efficiency of the entire cold storage system; at the same time, in the face of sudden high-load cooling needs, such as a sudden increase in customer flow in supermarkets during the hot summer period, or frequent opening and closing of cabinet doors to replenish goods, resulting in excessive loss of cold energy, the cold energy stored in the cold storage cylinder can respond quickly, and work together with the conventional energy storage tube to release a large amount of cold energy in a short period of time, enhance the resilience of the entire refrigeration device, and quickly restore the appropriate low temperature environment for the display window.

[0041] The above technology does not further limit the shape of the cold storage pipeline, and it can adopt a variety of arrangement combinations.

[0042] The cold storage liquid described in the article can be placed according to actual needs. For example, a phase change cold storage agent can be used. The phase change cold storage agent is a translucent (or opaque), viscous colloidal mixture composed of organic or (and) inorganic compounds. It can absorb and store a large amount of cold at low temperatures, and release a large amount of cold at higher temperatures. It can maintain a low temperature environment for itself and a small surrounding area for a long time. Low-temperature phase change cold storage agents or eutectic salts can be used; cold exchange media existing in existing technologies such as refrigerants can also be used according to actual needs.

[0043] The cold energy mentioned in this article is essentially a kind of energy, which is a measure of the heat removed from the cooled object by the refrigeration system. From a thermodynamic point of view, heat will spontaneously transfer from a high-temperature object to a low-temperature object. The refrigeration device consumes energy to create a low-temperature environment, which causes heat to be transferred from the cooled space or object. The amount of heat transferred is the cold energy. For example, the refrigeration system of a household refrigerator continuously removes the heat of the food and air in the box to maintain a low-temperature environment. The amount of heat removed is the cold energy generated by the refrigerator. In a refrigeration device, cold energy interaction refers to the process of cold energy transfer and exchange between different media, components or spaces. This process usually involves the refrigerant and The heat transfer between cooled objects or spaces, and the transfer of cold between different components in the refrigeration system. Taking the air conditioning system as an example, the low-temperature and low-pressure refrigerant absorbs the heat of the indoor air here, cools the air, and realizes the interaction of cold from the refrigerant to the indoor air; in the outdoor unit, the high-temperature and high-pressure refrigerant gas dissipates heat to the external environment through the condenser, which in turn involves the transfer of cold from the refrigerant to the outdoor environment; based on the description of the term cold, in the classic textbook of refrigeration majors in colleges and universities, "Refrigeration Principles and Equipment" (4th edition, edited by Wu Yezheng), cold is used as a core concept throughout, and the generation, calculation and application of cold in various refrigeration cycles are elaborated in detail. In many academic papers related to refrigeration, such as "Dynamic Simulation and Optimization of Multi-temperature Zone Refrigerators Based on Cold Distribution" (published in "Journal of Refrigeration"), the article studies the distribution and interaction of cold in different temperature zones of refrigerators, which fully demonstrates that the concept of cold is universal and basic in the research and practice of the refrigeration industry.

[0044] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A combined display freezer, comprising a cabinet body and a first refrigeration device, wherein a plurality of display windows are distributed along the length direction of the cabinet body on both side walls of the cabinet body, characterized in that: It also includes a second refrigeration device for refrigeration to quickly cool down the display window and a cold storage device for interacting with the first refrigeration device to exchange cold energy. The cold storage device includes a cold storage pipe group. The cabinet body has a chamber for accommodating the cold storage pipe group. The cold storage pipe group is filled with cold storage liquid for interacting with the cold storage device to lower the temperature of the display window and store cold energy.

2. A combined display freezer according to claim 1, characterized in that: The first refrigeration device includes a compressor, a first condenser, and a heat exchanger. The compressor is arranged in a linkage with the first condenser. The first condenser is arranged in a linkage with the heat exchanger. The cold storage device also includes a liquid tank storing cold storage liquid, a circulation pipeline connecting the liquid tank and the cold storage pipe group, and a circulation pump connected to the circulation pipeline to circulate the cold storage liquid. The liquid tank is arranged in a linkage with the heat exchanger.

3. The combined display freezer according to claim 1, characterized in that: The second refrigeration device includes a second condenser and a cooling fan arranged in the chamber.

4. A combined display freezer according to claim 1, characterized in that: Drainage channels are opened on the inner walls on both sides of the cabinet along the length direction of the cabinet, and the ends of the drainage channels are connected to drainage pipes. The drainage channels are arranged to be inclined relative to the bottom wall of the chamber, and the inclination direction of the drainage channels is inclined toward the bottom wall of the chamber from the starting end of the drainage channel to the end of the drainage channel. A water baffle is arranged in the chamber, and the radial cross-section of the water baffle is arranged in a circular arc. The water baffle is composed of a raised portion and two end portions, and the two end portions of the water baffle are respectively connected to the two side walls of the chamber, and the two end portions of the water baffle are respectively arranged below the corresponding drainage channels, and the water baffle is arranged directly below the cold storage pipeline.

5. The combined display freezer according to claim 1, characterized in that: A walking surface is provided in the chamber, and the walking surface divides the chamber into a freezing area and a storage area. The walking surface is composed of a plurality of cross bars and a plurality of longitudinal bars staggered and connected to each other. A plurality of the longitudinal bars and a plurality of cross bars are combined to form a plurality of placement grids for placing external frozen goods into the storage area.

6. A combined display freezer according to claim 5, characterized in that: The plurality of cross bars correspond to the plurality of longitudinal bars one by one and the starting end of each cross bar is hinged on the corresponding longitudinal bar, each cross bar is swingably arranged in the corresponding placement grid, and the end of each cross bar is provided with a buckling plate for buckling on the top wall of the adjacent longitudinal bar, the buckling plate is connected to the top wall of the cross bar, and the top wall of the cross bar is flush with the top wall of the longitudinal bar.

7. The combined display freezer according to claim 1, characterized in that: The bottom of the two side walls of the cabinet body extends outward to form a protrusion, and the display window is composed of a vertical window and a horizontal window. The vertical window is arranged on the side wall of the cabinet body, and the horizontal window is arranged on the protrusion. Each of the horizontal windows is arranged directly below the corresponding vertical window. The horizontal window is hollow to form a cavity connected to the chamber, and a cargo plate for placing external frozen goods is arranged in the cavity. The cavity is connected to the chamber.

8. The combined display freezer according to claim 7, characterized in that: Two slide rails are arranged relatively in the cavity, the opening direction of the slide rails is arranged in the same direction as the communication direction between the chamber and the cavity, and the two ends of the cargo plate are respectively slidably arranged on the two slide rails.

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