CN113558437B - Refrigerated display cabinet control method without temperature fluctuation - Google Patents
Refrigerated display cabinet control method without temperature fluctuation Download PDFInfo
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- CN113558437B CN113558437B CN202110872913.2A CN202110872913A CN113558437B CN 113558437 B CN113558437 B CN 113558437B CN 202110872913 A CN202110872913 A CN 202110872913A CN 113558437 B CN113558437 B CN 113558437B
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0439—Cases or cabinets of the open type
- A47F3/0443—Cases or cabinets of the open type with forced air circulation
- A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0439—Cases or cabinets of the open type
- A47F3/0443—Cases or cabinets of the open type with forced air circulation
- A47F3/0452—Cases or cabinets of the open type with forced air circulation with cooled storage compartments
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- Thermal Sciences (AREA)
- Freezers Or Refrigerated Showcases (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a control method of a refrigerated display cabinet without temperature fluctuation, wherein an air channel is arranged in the refrigerated display cabinet, an evaporator of a refrigerating system is positioned in the air channel, fins are arranged in the air channel, a refrigerated shelf is arranged on a back plate, a phase-change energy storage material is arranged in the refrigerated shelf, heat pipes connected with the fins are arranged in the phase-change energy storage material, a cold supply pipeline passing through the air channel is arranged in the phase-change material, the cold supply pipeline is connected in parallel with a parallel refrigerating circulating pipe section between the evaporator and a compressor and is provided with an electromagnetic valve, and the control method comprises a refrigerating mode and a defrosting mode for controlling the actions of the refrigerating system and the electromagnetic valve. The invention uses the cold storage property of the refrigerant, the temperature uniformity of the heat pipe and the cold storage and release properties of the phase change energy storage material, and controls the cold supply pipeline, the refrigeration system and the circulating fan to adopt different working states in the refrigeration mode and the defrosting mode by improving the refrigeration shelf and the refrigeration system, thereby solving the problems of uneven temperature and large fluctuation of the prior refrigerated display cabinet.
Description
Technical Field
The invention relates to the technical field of refrigeration display cabinets, in particular to a refrigeration display cabinet control method without temperature fluctuation.
Background
The refrigerated display cabinet as the tail end of the cold chain is a device with very high energy consumption and is the weakest link of the refrigeration chain. The common refrigerated display cabinet is an open display cabinet and consists of a display cabinet body, a refrigerating system, an air path and a refrigerated shelf, wherein the front end of the display cabinet body is developed into an open type or a complete open type. When the existing refrigerated display cabinet works, most of cold energy generated by the refrigerating system through the evaporator is used for cooling air in the air duct, and the other part of cold energy is used for cooling goods on the refrigerated shelf. The air curtain is formed when the inlet and outlet of the air path pipeline of the cabinet body circulate, part of cold air in the air curtain is used for maintaining the low temperature in the cabinet, and the other part of cold air separates the low temperature environment in the cabinet body from the external high temperature environment, so that the heat and mass transfer between the inside of the cabinet and the external air is isolated, and the purpose of maintaining the temperature and the humidity of the articles in the cabinet is achieved.
However, the existing refrigerated display case has a serious problem of uneven internal temperature when in operation: firstly, in application places with large flow of people such as business surpasses and restaurants, the radiant heat from the external environment to the goods stored in the cabinet is large, the penetration of the ambient hot and humid air through the air curtain is large, and the small disturbance of the outside can cause large fluctuation of the temperature of the food; secondly, the refrigerated display cabinet as the refrigeration equipment has the condition of frosting on the cold wall surface, and when the refrigerated display cabinet runs, the refrigeration system needs to periodically defrost, so that the temperature in the cabinet rises back, and the temperature fluctuation in the cabinet and the refrigerated shelf is large; thirdly, due to the structure, the temperature of the front part of the cold storage shelf in the cabinet is higher than that of the rear part, the temperature of the upper part is higher than that of the lower part, and the temperature difference of food storage is large. Because of the disadvantages of large temperature fluctuation and large temperature difference, which threaten food safety, refrigerated display cabinets become the weakest link in the cold chain.
In the prior art, the problems of temperature fluctuation and large temperature difference in a cabinet are mainly solved by optimizing an air curtain and a refrigerating system. If the capacity of the air curtain for sealing the internal and external environments of the cabinet is optimized, the problem of large temperature difference can be relieved, but the problem of large temperature fluctuation of stored objects cannot be solved; the refrigeration system is optimized, the problem of food temperature fluctuation can be relieved, and the problems of large front-back row temperature difference, large upper-lower temperature difference and strong sensitivity to the surrounding environment of the food refrigeration shelf are not effectively solved. The novel refrigeration shelf of the refrigeration showcase, disclosed by the utility model patent with the publication number of CN 204580653U and the publication date of 2015.08.26, comprises a refrigeration shelf body, wherein the refrigeration shelf body comprises an upper base plate and a lower base plate, and at least one heat pipe is arranged between the upper base plate and the lower base plate; the front parts of the heat pipes are flush with the front parts of the upper substrate and the lower substrate, the tail parts of the heat pipes are exposed out of the rear parts of the upper substrate and the lower substrate, and fins are arranged on the tail parts of the heat pipes; porous medium materials are filled between the cavity formed by the upper substrate and the lower substrate and the outer wall of the heat pipe, and phase change working media are injected into pores of the porous medium materials.
In addition, with the wide application of the refrigerated display cabinet in the market, the existing refrigerated display cabinet is not detachable and adjustable, and can not meet the use requirements of different use scenes; in addition, the volumes of the stored goods are also different, and the utilization of the storage space of the showcase cannot be maximized. The prior art lacks the problem of solving or studying the flexible disassembly and movement of all levels of refrigeration shelves of the refrigerated showcase when in use, but the cold chain market at present is diversified, and a refrigerated showcase which has small temperature fluctuation during normal use and defrosting and can be flexibly disassembled and assembled by a built-in refrigeration shelf is urgently needed to solve the problems of cold resource waste and low space utilization rate in the widely-existing showcase.
Disclosure of Invention
Aiming at the defects in the background art, the invention provides a refrigerated display cabinet control method without temperature fluctuation, and solves the technical problems of large temperature fluctuation and small easy application range of the existing refrigerated display cabinet.
The technical scheme of the invention is realized as follows: a control method of a refrigerated display cabinet without temperature fluctuation comprises a cabinet body, a back plate which is matched with an outer wall at intervals is arranged on the inner side of the cabinet body, an open port is arranged on the outer side of the cabinet body, an air channel is arranged between the back plate and the outer wall, the air channel is provided with an air outlet and an air return inlet which correspond to each other on the upper side and the lower side of the open port, an evaporator of a refrigerating system is positioned in the air channel, fins are arranged in the air channel, a refrigerated shelf which is connected to the back plate is arranged in the cabinet body and comprises an upper base plate and a lower base plate, a porous medium material is arranged between the upper base plate and the lower base plate, a phase change energy storage material is arranged in the porous medium material, a heat pipe which is connected with the fins is arranged in the phase change energy storage material, circulating fans are arranged at the air outlet and the air return inlet, a cold supply pipeline which passes through the air channel is connected to a parallel refrigerating circulating pipe section which is arranged between the evaporator and a compressor in parallel connection, a first electromagnetic valve is arranged between the cold supply pipeline and the evaporator, a second electromagnetic valve is arranged between the cold supply pipeline and the compressor, a third electromagnetic valve is arranged between the parallel refrigeration circulating pipeline section and the evaporator, and a fourth electromagnetic valve is arranged between the parallel refrigeration circulating pipeline section and the compressor;
the control method comprises a refrigeration mode and a defrosting mode:
in the refrigeration mode, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are controlled to be opened, the refrigeration system and the circulating fan run at high power, the cold energy emitted by the evaporator enables a low-temperature environment to be formed in the air duct, a high-speed low-temperature air curtain is formed between the air outlet and the air return inlet, the cold energy is transmitted to the heat pipe after low-temperature cold air in the air duct passes through the fins, the heat pipe forms a condensation section and transmits the cold energy to the phase-change energy storage material, the upper substrate and the lower substrate simultaneously, the phase-change energy storage material stores the cold energy, meanwhile, the refrigerant flowing through the evaporator in the cold supply pipeline continuously transmits the cold energy to the phase-change energy storage material, the upper substrate and the lower substrate, the cold energy of the upper substrate and the lower substrate is transmitted to a storage object, and the phase-change energy storage material stores the energy and reduces the temperature fluctuation of the storage object together with the cold supply pipeline;
during the defrosting mode, control first solenoid valve, the second solenoid valve is opened and the third solenoid valve, the fourth solenoid valve is closed, control refrigerating system low power operation, evaporimeter and cooling supply pipeline give off a small amount of cold volume to the wind channel, phase transition energy storage material begins to the upper base plate, the infrabasal plate, heat pipe release cold volume, the heat pipe forms the evaporation zone and absorbs the heat that comes from the fin, the fin reduces the temperature fluctuation in the wind channel with the cooling supply pipeline jointly, simultaneously, cooling supply pipeline constantly provides cold volume to phase transition energy storage material, cooling supply pipeline and phase transition energy storage material reduce the temperature fluctuation of storage article together.
And in the defrosting mode, the high-power opening of the circulating fan is controlled, and a small amount of cold energy emitted by the evaporator, the cold supply pipeline and the fins enables a high-speed medium-temperature air curtain to be formed between the air outlet and the air return inlet.
Or in the defrosting mode, the low-power starting of the circulating fan is controlled, and a small amount of cold energy emitted by the evaporator, the cold supply pipeline and the fins enables a low-speed medium-temperature air curtain to be formed between the air outlet and the air return inlet.
Or during the defrosting mode, the circulating fan is controlled to be closed, and the small amount of cold energy emitted by the evaporator, the cold supply pipeline and the fins enables the air outlet and the air return inlet to form a medium-temperature atmosphere.
Furthermore, the air outlet and the air return opening are provided with electric gates, and the opening of the electric gates is controlled to be increased or reduced or closed in a defrosting mode.
Furthermore, the fins are detachably connected with the heat pipe, a plurality of layers of fixing holes are formed in the back plate, and the refrigeration shelf is selectively arranged at different fixing holes according to different stored articles.
Furthermore, the cold supply pipeline comprises a fixed section positioned in the refrigerating shelf and a movable section positioned in the air channel, and the fixed section is connected with the movable section through a telescopic pipe.
Further, the part of the cooling pipeline, which is located on the phase change energy storage material, is a coil pipe, and the coil pipe is tiled between the upper substrate and the lower substrate and extends from the left end to the right end of the upper substrate and from the rear end to the front end.
The invention uses the cold storage property of the refrigerant, the temperature uniformity of the heat pipe and the cold storage and release properties of the phase change energy storage material, and under the premise of ensuring that the existing integral structure of the display cabinet is not changed, the refrigeration shelf and the refrigeration system are improved, and the refrigeration mode and the defrosting mode control the cold supply pipeline, the refrigeration system and the circulating fan to adopt different working states, thereby solving the problems of uneven temperature and large fluctuation of the existing refrigeration display cabinet. In addition, the refrigeration shelf adopts a modular design, can be flexibly arranged at different positions of the back plate, not only enlarges the application range, but also does not influence the temperature stability of the refrigeration display cabinet.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a perspective view of the refrigeration shelf of FIG. 1;
FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic structural view of example 4;
wherein:
1. the heat pipe type refrigeration system comprises an evaporator, 2, a cooling pipeline, 3, a back plate, 4, fins, 5, a cabinet body, 6, a refrigeration shelf, 7, an air channel, 8, an air outlet, 9, an open port, 10, an air return port, 11, an upper base plate, 12, a heat pipe, 13, a lower base plate, 14, a porous medium material, 15, a phase-change energy storage material, 16, a fixed hole, 17 and a telescopic pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The cabinet body 5 is internally provided with a refrigerating system, and the refrigerating system comprises four refrigerating parts in circulating connection: compressor-condenser-expansion valve-evaporator. The evaporator 1 of the refrigeration system is positioned in the air duct 7, and can transmit the cold energy into the air duct 7 when the evaporator 1 releases the cold energy under the action of the refrigerant. The air duct 7 is provided with the fins 4, and the cold energy in the air duct 7 can be transmitted to the fins 4.
Be provided with a plurality of cold-stored shelf 6 of connection on backplate 3 in the cabinet body 5, interval distribution about each cold-stored shelf 6 is used for placing the storage article on the cold-stored shelf 6. The refrigeration shelf 6 comprises an upper substrate 11 and a lower substrate 13, a porous medium material 14 is arranged between the upper substrate 11 and the lower substrate 13, a phase change energy storage material 15 is arranged in the porous medium material 14, and the phase change energy storage material 15 can realize heat exchange between the upper substrate 11 and the lower substrate 13 and the air duct 7. The heat pipes 12 connected with the fins 4 are arranged in the phase change energy storage material 15, and the phase change energy storage material 15 can obtain cold energy from the air duct 7 to store cold and can transmit the heat of the upper substrate 11 and the lower substrate 13 to the air duct 7 to be discharged through the effect of uniformly transmitting the cold energy and the heat of the heat pipes 12.
The phase-change material 15 is internally provided with a cold supply pipeline 2 passing through an air duct 7, and the cold supply pipeline 2 is connected in parallel with a parallel refrigeration circulating pipe section between the evaporator 1 and the compressor, namely the cold supply pipeline 2 is connected in parallel with a pipeline between the compressor and the evaporator 1 in four refrigeration parts. A first electromagnetic valve 101 is arranged between the cold supply pipeline 2 and the evaporator 1, a second electromagnetic valve 102 is arranged between the cold supply pipeline and the compressor, a third electromagnetic valve 103 is arranged between the parallel refrigeration circulating pipeline section and the evaporator 1, and a fourth electromagnetic valve 104 is arranged between the parallel refrigeration circulating pipeline section and the compressor, so that the local flow direction of the refrigerant in the refrigeration system can be changed by controlling the opening and closing of each electromagnetic valve.
The control method comprises a refrigeration mode and a defrosting mode:
in the refrigeration mode, the first electromagnetic valve 101, the second electromagnetic valve 102, the third electromagnetic valve 103 and the fourth electromagnetic valve 104 are controlled to be opened, the refrigerant in the refrigeration system can flow from the evaporator 1 to the compressor through the parallel refrigeration circulating pipe section, or can flow from the evaporator to the compressor through the cooling pipeline 2, although the temperature of the refrigerant flowing through the cooling pipeline 2 is increased, the refrigerant is still in a low-temperature state and can be continuously utilized, and the cold energy of the refrigerant can be transmitted to the refrigeration shelf 6 through the cooling pipeline 2 to exchange heat.
At the moment, the refrigeration system and the circulating fan are controlled to run at high power, the cold energy emitted by the evaporator 1 enables a low-temperature environment to be formed in the air duct 7, a high-flow high-speed low-temperature air curtain is formed between the air outlet 8 and the air return opening 10, the partition frame 6 is isolated from the outside by the high-speed low-temperature air curtain, heat exchange is avoided, and heat radiation can be reduced.
And the cold energy is transmitted to the heat pipe 12 by the low-temperature cold air in the air duct 7 after passing through the fins 4, and at the moment, the heat pipe 12 forms a condensation section and transmits the cold energy to the phase change energy storage material 15, the upper substrate 11 and the lower substrate 13 at the same time. The phase-change energy storage material 15 is in an energy storage mode to store cold, meanwhile, the refrigerant flowing in the cold supply pipeline 2 and passing through the evaporator 1 continuously transmits the cold to the phase-change energy storage material 15, the upper substrate 11 and the lower substrate 13, and the cold of the upper substrate 11 and the lower substrate 13 is transmitted to the storage object to maintain the temperature of the storage object to be constant. The phase-change energy storage material 15 stores energy, and simultaneously reduces temperature fluctuation of stored articles together with the cooling pipeline 2.
In the defrosting mode, the first electromagnetic valve 101 and the second electromagnetic valve 102 are controlled to be opened, and the third electromagnetic valve 103 and the fourth electromagnetic valve 104 are controlled to be closed, so that the refrigerant in the refrigeration system cannot flow from the evaporator 1 to the compressor through the parallel refrigeration circulating pipe section, but can flow from the evaporator to the compressor through the cooling pipeline 2, the temperature of the refrigerant flowing through the cooling pipeline 2 is increased, but the refrigerant is still in a low-temperature state and can be continuously utilized, and the cold energy of the refrigerant can be transmitted to the refrigeration shelf 6 through the cooling pipeline 2 to exchange heat.
At this time, the low-power operation of the refrigeration system is controlled, the evaporator 1 and the cooling duct 2 emit a small amount of cold to the air duct 7, and the phase-change energy storage material 15 starts to release the cold to the upper substrate 11, the lower substrate 13 and the heat pipe 12. The cold energy released by the phase-change energy storage material 15 is the main cold energy and is divided into two parts, one part is used for supplying cold to the upper substrate 11 and the lower substrate 13 to maintain the temperature of the stored articles, the other part is transmitted to the air in the air duct 7 through the heat pipe 12, and the heat pipe 12 forms an evaporation section to absorb the heat from the fins 4 to maintain the air duct 7 at a relatively low temperature. The cold quantity of the cold supply pipeline 2 and the cold quantity of the evaporator 1 are auxiliary cold quantities, wherein the auxiliary cold quantity of the cold supply pipeline 2 is divided into two parts, one part is used for supplying cold to the upper substrate 11, the lower substrate 13 and the phase-change energy storage material 15, and because the refrigerant in the cold supply pipeline 2 has continuity, the temperature fluctuation of stored articles can be reduced together with the phase-change energy storage material 15; the cold quantity of the other part of the cold supply pipeline 2 and the cold quantity released by the evaporator 1 act together, and due to the synchronism and the continuity of the cold supply pipeline and the evaporator, the cold quantity transmitted to the air channel by the phase change energy storage material 15 through the heat pipe 12 and the fins 4 can be assisted, and the fins 4, the cold supply pipeline 2 and the evaporator 1 reduce the temperature fluctuation in the air channel 7 together.
In the defrosting mode, the high-power opening of the circulating fan is controlled, and a small amount of cold energy emitted by the evaporator 1, the cold supply pipeline 2 and the fins 4 enables a high-speed medium-temperature air curtain to be formed between the air outlet 8 and the air return opening 10. Because its circulating fan is in high power running state, the air curtain flow that its formed is big and the velocity of flow is high and be difficult for being pierced through by the outside air, simultaneously, the difference in temperature of warm air curtain and outside air is little, can not absorb more heat in the short time here, can play fine isolated effect.
On the other hand, however, it is because of its large flow rate and high flow speed, which causes the air with low pressure nearby to "adsorb" the outside air entering the air duct 7 from the air return opening 10 to participate in the circulation, which causes the temperature fluctuation in the air duct 7 to be difficult to control. Therefore, all set up electronic sluice gate in air outlet 8 department and return air inlet 10 department, turn up the electronic sluice gate of air outlet 8 department and turn up the electronic sluice gate of return air inlet 10 department when the defrosting mode, so can reduce the velocity of flow, and thickened the thickness of air curtain, the opening width that makes the width of air curtain cover whole return air inlet 10 department, and then avoided the outside air that the air curtain "adsorbs" to get into wind channel 7, avoid temperature fluctuation in the wind channel 7, maintain the constancy of temperature in the wind channel 7.
On the other hand, however, the temperature around the refrigeration shelf 6 is much different from the temperature of the external air, the pressure of the environment where the refrigeration shelf 6 is located is greater than the pressure outside the air curtain, and the air curtain has a low flow rate and is in a medium temperature state, so that the air curtain absorbs more internal cold than external heat, and the air entering the air duct 7 still causes a certain temperature fluctuation. Therefore, the electric gates are arranged at the air return opening 10, and the electric gates at the air return opening 10 are enlarged in the defrosting mode, so that the section of the air curtain is wedge-shaped, the flow speed of the air curtain at the air return opening 10 is further slowed down to exchange heat and cold, the temperature fluctuation in the air channel 7 is avoided, and the temperature in the air channel 7 is kept constant.
The other methods of this example are the same as example 1.
Although the middle temperature air mass cannot effectively prevent outside air from entering the vicinity of the shelves 6, the phase change energy storage material 15 and the cooling duct 2 maintain the shelf temperature balance, and there is a problem that the environment is diverse, and when the outside air is high, the advantage of facilitating defrosting also causes cooling failure of the phase change energy storage material 15 and the cooling duct 2, and the temperature balance at the refrigerating shelves 6 cannot be maintained. Therefore, electric gates are arranged at the air outlet 8 and the air return opening 10, and the electric gates are controlled to be closed in a defrosting mode, so that the influence of the outside air on the air channel 7, the phase change energy storage material 15 and the cooling pipeline 2 is avoided.
The other methods of this example are the same as example 1.
Further, the part that the cooling pipeline 2 is located phase change energy storage material is the coil pipe, and the coil pipe tiling is between upper substrate 11 and infrabasal plate 13 and extends to the right-hand member, extends to the front end from the rear end from the left end of upper substrate 11, and the holistic temperature of refrigerated shelf 6 is balanced, further reduces the temperature fluctuation.
Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A refrigerated display cabinet control method without temperature fluctuation comprises a cabinet body (5), a back plate (3) which is matched with an outer wall at intervals is arranged on the inner side of the cabinet body (5), an open port (9) is arranged on the outer side of the cabinet body, an air duct (7) is arranged between the back plate (3) and the outer wall, corresponding air outlets (8) and air return ports (10) are arranged on the upper side and the lower side of the open port (9) of the air duct (7), an evaporator (1) of a refrigeration system is positioned in the air duct (7), fins (4) are arranged in the air duct (7), a refrigerated shelf (6) connected to the back plate (3) is arranged in the cabinet body (5), the refrigerated shelf (6) comprises an upper substrate (11) and a lower substrate (13), a porous medium material (14) is arranged between the upper substrate (11) and the lower substrate (13), and a phase-change energy storage material (15) is arranged in the porous medium material (14), be provided with heat pipe (12) that link to each other with fin (4) in phase change energy storage material (15), its characterized in that: the air outlet (8) and the air return inlet (10) are both provided with circulating fans, a cold supply pipeline (2) passing through an air channel (7) is arranged in the phase change energy storage material (15), the cold supply pipeline (2) is connected in parallel to a parallel refrigeration circulating pipe section between the evaporator (1) and the compressor, a first electromagnetic valve is arranged between the cold supply pipeline (2) and the evaporator (1), a second electromagnetic valve is arranged between the cold supply pipeline and the compressor, a third electromagnetic valve is arranged between the parallel refrigeration circulating pipe section and the evaporator (1), and a fourth electromagnetic valve is arranged between the parallel refrigeration circulating pipe section and the compressor;
the control method comprises a refrigeration mode and a defrosting mode:
in a refrigeration mode, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are controlled to be opened, the refrigeration system and the circulating fan run at high power, cold energy emitted by the evaporator (1) enables a low-temperature environment to be formed in the air duct (7), a high-speed low-temperature air curtain is formed between the air outlet (8) and the air return port (10), low-temperature cold air in the air duct (7) passes through the fins (4) and then transfers the cold energy to the heat pipes (12), the heat pipes (12) form a condensation section and simultaneously transfer the cold energy to the phase-change energy storage material (15), the upper substrate (11) and the lower substrate (13), the phase-change energy storage material (15) stores the cold energy, meanwhile, refrigerant flowing through the evaporator (1) in the cold supply pipeline (2) continuously transfers the cold energy to the phase-change energy storage material (15), the upper substrate (11) and the lower substrate (13), and the cold energy of the upper substrate (11) and the lower substrate (13) is transferred to storage articles, the phase-change energy storage material (15) stores energy and simultaneously reduces the temperature fluctuation of stored articles together with the cooling pipeline (2);
during the defrosting mode, control first solenoid valve, the second solenoid valve is opened and the third solenoid valve, the fourth solenoid valve is closed, control refrigerating system low power operation, evaporimeter (1) and cooling supply pipeline (2) give off a small amount of cold volume to wind channel (7), phase change energy storage material (15) begin to make progress base plate (11), infrabasal plate (13), cold volume is released to heat pipe (12), heat pipe (12) form the evaporation zone and absorb the heat that comes from fin (4), fin (4) and cooling supply pipeline (2) reduce the temperature fluctuation in wind channel (7) jointly, and simultaneously, cooling supply pipeline (2) constantly provide cold volume to phase change energy storage material (15), cooling supply pipeline (2) and phase change energy storage material (15) reduce the temperature fluctuation of storage article together.
2. A refrigerated display case control method without temperature fluctuation according to claim 1, characterized in that: and in the defrosting mode, the high-power opening of the circulating fan is controlled, and a small amount of cold energy emitted by the evaporator (1), the cold supply pipeline (2) and the fins (4) enables a high-speed medium-temperature air curtain to be formed between the air outlet (8) and the air return inlet (10).
3. A refrigerated display case control method without temperature fluctuation according to claim 1, characterized in that: and in the defrosting mode, the circulating fan is controlled to be started at low power, and a small amount of cold energy emitted by the evaporator (1), the cold supply pipeline (2) and the fins (4) enables a low-speed medium-temperature air curtain to be formed between the air outlet (8) and the air return inlet (10).
4. A refrigerated display case control method without temperature fluctuation according to claim 1, characterized in that: and in the defrosting mode, the circulating fan is controlled to be closed, and the small amount of cold energy emitted by the evaporator (1), the cold supply pipeline (2) and the fins (4) enables the air outlet (8) and the air return inlet (10) to form a medium-temperature atmosphere.
5. A refrigerated display case control method without temperature fluctuation according to any of claims 1-4, characterized in that: and electric gates are arranged at the air outlet (8) and the air return inlet (10), and the opening of the electric gates is controlled to be increased or reduced or closed in a defrosting mode.
6. A refrigerated display case control method without temperature fluctuation according to claim 5, characterized in that: the fins (4) are detachably connected with the heat pipe (12), a plurality of layers of fixing holes (16) are formed in the back plate (3), and the refrigeration shelf (6) is selectively arranged in different fixing holes (16) according to different stored articles.
7. A refrigerated display case control method without temperature fluctuation according to any of claims 1-4, 6, characterized in that: the cold supply pipeline (2) comprises a fixed section positioned in the refrigeration shelf (6) and a movable section positioned in the air duct (7), and the fixed section is connected with the movable section through an extension pipe (17).
8. A refrigerated display case control method without temperature fluctuation according to claim 7, characterized in that: the part of the cold supply pipeline (2) located on the phase change energy storage material is a coil pipe, and the coil pipe is tiled between the upper base plate (11) and the lower base plate (13), extends from the left end of the upper base plate (11) to the right end, and extends from the rear end to the front end.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005156105A (en) * | 2003-11-28 | 2005-06-16 | Matsushita Electric Ind Co Ltd | Refrigerator |
| JP2005345063A (en) * | 2004-06-07 | 2005-12-15 | Matsushita Electric Ind Co Ltd | Refrigerator |
| EP1780492A1 (en) * | 2004-07-30 | 2007-05-02 | Daikin Industries, Ltd. | Refrigeration unit |
| CN102393104A (en) * | 2011-10-31 | 2012-03-28 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and condenser/evaporator assembly |
| CN104422227A (en) * | 2013-09-05 | 2015-03-18 | 西安凯倍耐特智能工程有限公司 | Quick defrosting refrigerator |
| CN204580653U (en) * | 2015-02-05 | 2015-08-26 | 郑州轻工业学院 | The novel shelf of refrigerator display case |
| CN105571214A (en) * | 2016-02-25 | 2016-05-11 | 美的集团股份有限公司 | Air conditioner and parallel flow heat exchanger thereof |
| CN212481794U (en) * | 2020-05-26 | 2021-02-05 | 安徽维烨制冷设备有限公司 | Cold air flow guiding device for refrigerated cabinet |
| CN212511994U (en) * | 2019-11-26 | 2021-02-09 | 唐进财 | Novel low-temperature preservation box for medical biology |
| CN213208316U (en) * | 2020-09-21 | 2021-05-14 | 成都众乐餐饮管理有限责任公司 | Cold storage cabinet with uniformly distributed cold air |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11257830A (en) * | 1998-03-12 | 1999-09-24 | Sanyo Electric Co Ltd | Open showcase |
| CN201149408Y (en) * | 2008-07-08 | 2008-11-12 | 西安交通大学 | Combined shelf for refrigerated display case |
| JP2016142483A (en) * | 2015-02-03 | 2016-08-08 | 三菱重工冷熱株式会社 | Air cooler |
| CN106556078A (en) * | 2016-11-30 | 2017-04-05 | 广东美的制冷设备有限公司 | Heat pump and its defrosting control method |
| CN212213246U (en) * | 2019-08-02 | 2020-12-25 | 浙江欧恒制冷设备有限公司 | Categorised formula fruit freezer |
| CN212157792U (en) * | 2020-04-21 | 2020-12-15 | 甘肃鸿泽农业开发有限公司 | Domestic fungus cold storage plant |
-
2021
- 2021-07-30 CN CN202110872913.2A patent/CN113558437B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005156105A (en) * | 2003-11-28 | 2005-06-16 | Matsushita Electric Ind Co Ltd | Refrigerator |
| JP2005345063A (en) * | 2004-06-07 | 2005-12-15 | Matsushita Electric Ind Co Ltd | Refrigerator |
| EP1780492A1 (en) * | 2004-07-30 | 2007-05-02 | Daikin Industries, Ltd. | Refrigeration unit |
| CN102393104A (en) * | 2011-10-31 | 2012-03-28 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and condenser/evaporator assembly |
| CN104422227A (en) * | 2013-09-05 | 2015-03-18 | 西安凯倍耐特智能工程有限公司 | Quick defrosting refrigerator |
| CN204580653U (en) * | 2015-02-05 | 2015-08-26 | 郑州轻工业学院 | The novel shelf of refrigerator display case |
| CN105571214A (en) * | 2016-02-25 | 2016-05-11 | 美的集团股份有限公司 | Air conditioner and parallel flow heat exchanger thereof |
| CN212511994U (en) * | 2019-11-26 | 2021-02-09 | 唐进财 | Novel low-temperature preservation box for medical biology |
| CN212481794U (en) * | 2020-05-26 | 2021-02-05 | 安徽维烨制冷设备有限公司 | Cold air flow guiding device for refrigerated cabinet |
| CN213208316U (en) * | 2020-09-21 | 2021-05-14 | 成都众乐餐饮管理有限责任公司 | Cold storage cabinet with uniformly distributed cold air |
Non-Patent Citations (1)
| Title |
|---|
| 搁架长度对冷藏陈列柜性能的影响;吕彦力;《制冷与空调》;20180331;第18卷(第3期);第10-14页 * |
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