CN209944849U - Super-ice-temperature refrigerator - Google Patents
Super-ice-temperature refrigerator Download PDFInfo
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- CN209944849U CN209944849U CN201920609612.9U CN201920609612U CN209944849U CN 209944849 U CN209944849 U CN 209944849U CN 201920609612 U CN201920609612 U CN 201920609612U CN 209944849 U CN209944849 U CN 209944849U
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Abstract
The utility model discloses a super ice temperature refrigerator, including a super ice temperature district by heat preservation outer wall and heat preservation door enclose, be equipped with the cooling exocoel in super ice temperature district, the phase change material chamber, cooling inner chamber and concentration adjusting device, the cooling inner chamber, the phase change material chamber, the cooling exocoel is established from inside to outside in proper order and is close to one side of heat preservation door in super ice temperature district, one side opening of cooling inner chamber laminating heat preservation door, a give birth to bright product for placing needs carry out super ice temperature and preserve, the phase change material intracavity is equipped with the phase change material who realizes phase transition point regulation through adjusting solute concentration, the cooling exocoel links to each other with the refrigeration system of refrigerator, be used for refrigeration or heat the phase change material chamber, concentration adjusting device links to each other with the phase change material chamber, a solute concentration for adjusting phase change material. The utility model discloses widened the temperature control scope of traditional refrigerator, super ice temperature district control accuracy is high, and the temperature fluctuation is little, can realize preserving the super ice temperature of different fresh produce products.
Description
Technical Field
The utility model relates to a super ice temperature storage technology, concretely relates to super ice temperature refrigerator.
Background
The super-ice-temperature storage technology is an ice-temperature technology which has long storage time and can maintain the high quality of fresh products in recent years, the fresh products are maintained in a super-cooled state below a freezing point without freezing by special techniques such as adjusting the cooling speed and the like, the special flavor of the fresh products is maintained, and compared with the ice-temperature storage technology, the storage period of the super-ice-temperature storage technology can be prolonged by more than 1 time.
In the super-ice-temperature storage process, the storage temperature is required to be between the freezing point and the damage point of the fresh product, and the temperature area is called the super-ice-temperature field. The super-ice-temperature field temperatures of different fresh products are different, the temperature area of the general vegetable and fruit super-ice-temperature field is lower, the temperature area of the poultry meat super-ice-temperature field is higher, the super-ice-temperature field of the conventional vegetable, fruit, poultry meat and the like is approximately in a certain temperature area between-15 ℃ and 0 ℃, and the requirement on temperature control precision is extremely high. The traditional refrigerator generally only has a cold storage fresh-keeping area above 0 ℃ and a freezing area below-18 ℃, and the ambient heat is usually taken away by evaporating a refrigerant in an evaporator, so that the temperature control precision is poor, the temperature fluctuation is large, and the super-ice-temperature storage requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the not enough of prior art existence, provide a super ice temperature refrigerator, can realize giving birth to super ice temperature storage of bright product.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides an ultra-ice temperature refrigerator, including an ultra-ice temperature district that is enclosed by heat preservation outer wall and heat preservation door, be equipped with the cooling exocoel in ultra-ice temperature district, the phase change material chamber, cooling inner chamber and concentration adjustment device, the cooling inner chamber, the phase change material chamber, the cooling exocoel is established from inside to outside in proper order and is established the one side that is close to the heat preservation door in ultra-ice temperature district, one side opening of cooling inner chamber laminating heat preservation door for place the living fresh product that needs carry out ultra-ice temperature and preserve, phase change material intracavity is equipped with the phase change material that realizes phase transition point regulation through adjusting solute concentration, the cooling exocoel links to each other with the refrigeration system of refrigerator, be used for refrigerating or heating the phase change material chamber, concentration adjustment device links to each other with the phase.
As an improvement of the utility model, the utility model also comprises a cold storage area and a freezing area, the temperature range of the cold storage area is 0-8 ℃, the temperature range of the super-ice temperature area is-15 to-0.5 ℃, and the temperature of the freezing area is lower than-18 ℃.
As an improvement of the utility model, the cooling exocoel be equipped with air intake and air outlet, the air intake is equipped with cooling/heat supply coil pipe and fan, cooling system of cooling/heat supply coil pipe and refrigerator links to each other, is equipped with in the cooling exocoel and reinforces the rib of heat transfer with phase change material chamber outer wall.
As an improvement of the utility model, the cooling outer cavity in be equipped with the cooling/heating coil pipe that contacts with phase change material chamber outer wall, the cooling system of cooling/heating coil pipe and refrigerator links to each other.
As an improvement of the utility model, concentration adjusting device include high-pressure pump, pellicle and solution tank, the pellicle setting is in solution tank, separates into high concentration solution district and low concentration solution district with solution tank, phase change material chamber, high-pressure pump, high concentration solution district, low concentration solution district connect gradually and form a closed loop, phase change material chamber, high-pressure pump, high concentration solution district connect gradually and form another closed loop.
As an improvement of the utility model, the concentration adjusting device still include solid particle concentration detection device, phase change material chamber, high-pressure pump, solid particle concentration detection device connect gradually and form closed circuit.
As an improvement of the utility model, the concentration adjusting device further comprises a liquid level sensor arranged in the phase-change material cavity.
As an improvement of the utility model, phase change material intracavity lateral wall face be provided with parallel fin, the bottom is provided with a plurality of support fins, parallel fin and support fin all adopt high heat conduction material to make.
As an improvement of the utility model, the thermal insulation door and the thermal insulation outer wall all adopt the insulation material of low coefficient of heat conductivity to make, when adopting same kind of material, the thickness of thermal insulation door is greater than the thermal insulation outer wall.
As an improvement of the utility model, the heat preservation door on be equipped with temperature monitoring display screen for real-time supervision and the temperature of adjusting in the super ice warm area.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the super-ice temperature area is added, and the temperature control range of the refrigerator is enriched;
2. the characteristics that the low-temperature phase change material absorbs heat and changes phase without changing the temperature of the low-temperature phase change material are utilized to maintain the temperature of the cooling inner cavity to be constant, the temperature fluctuation is small, the control precision is high, and the super-ice-temperature storage of fresh products is easy to realize.
3. The characteristic that the semipermeable membrane can permeate the solvent and can not permeate the solute is utilized, and the control of the solute concentration of the phase-change material is realized by adopting the reverse osmosis principle, so that the temperature of the cooling inner cavity is accurately controlled.
Drawings
FIG. 1 is a schematic structural view of an ultra-ice-temperature refrigerator according to the present invention;
FIG. 2 is a first schematic structural view of the super ice temperature refrigerator of the present invention, showing air in the cooling outer cavity in the super ice temperature region;
FIG. 3 is a schematic structural view of the inner rib of the phase change material cavity in the super ice temperature region of the super ice temperature refrigerator of the present invention;
FIG. 4 is a schematic structural view of the cooling coil pipe in the cooling outer cavity of the super-ice temperature region of the super-ice temperature refrigerator of the present invention;
FIG. 5 is a schematic view showing the arrangement of the cooling outer chamber of the super-ice-temperature region of the super-ice-temperature refrigerator of the present invention as a cooling/heating coil;
FIG. 6 is a second schematic structural view of the super ice temperature refrigerator of the present invention, showing air in the cooling outer cavity in the super ice temperature region;
description of reference numerals: 1-a cold storage area; 2-super-ice temperature zone; 3-a freezing zone; 201-heat preservation outer wall; 202-a cooling outer chamber; 203-phase change material cavity; 204-cooling the inner cavity; 205-concentration regulating means; 206-an air inlet; 207-air outlet; 208-a heat preservation door; 209-temperature monitoring display; 210-a semi-permeable membrane; 211-low concentration solution zone; 212-high concentration solution zone; 213-a high pressure pump; 214-parallel ribs; 215-supporting ribs; 216-solid particulate matter concentration detection means; 217-ribs; 218-heating/cooling coils; 219-liquid level sensor; an M-flow meter; V1-V6-valve.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1, the super ice temperature refrigerator includes a refrigerating area 1, a super ice temperature area 2 and a freezing area 3. The super-ice temperature region 2 is arranged between the refrigeration region 1 and the freezing region 3. The temperature range of the cold storage area 1 is 0-8 ℃, the temperature range of the super-ice temperature area 2 is-15 to-0.5 ℃, and the temperature of the freezing area 3 is lower than-18 ℃.
As shown in fig. 2, the super-ice temperature zone is a rectangular chamber enclosed by an insulating outer wall 201 and an insulating door 208, and a cooling outer chamber 202, a phase-change material chamber 203, a cooling inner chamber 204 and a concentration adjusting device 205 are arranged in the rectangular chamber. The heat preservation door 208 and the heat preservation outer wall 201 both adopt heat preservation materials with low heat conductivity coefficients, such as polyurethane foam plastics, aerogel heat preservation materials or vacuum heat insulation plates, and when the same material is adopted, the thickness of the heat preservation material of the heat preservation door 208 is larger than that of the heat preservation material of the heat preservation outer wall 201. The cooling inner cavity 204, the phase change material cavity 203 and the cooling outer cavity 202 are sequentially sleeved on one side of the super ice temperature area close to the heat preservation door 208 from inside to outside, and the concentration adjusting device 205 is positioned on the other side of the super ice temperature area. The cooling cavity 204 is a rectangular cavity with an opening at one side, and the opening and closing of the cooling cavity are realized through a heat preservation door 208. The phase change material cavity 203 is wrapped on the other side of the cooling inner cavity 204 except the opening side, and the cooling outer cavity 202 is wrapped on the outer side of the phase change material cavity 203.
In this embodiment, the cooling outer chamber 202 is an air chamber, an air inlet 206 is disposed at an upper side of the cooling outer chamber, an air outlet 207 is disposed at an opposite side of the cooling outer chamber, a rib 217 for enhancing heat exchange with an outer wall surface of the phase change material chamber 203 is disposed inside the cooling outer chamber, a cooling/heating coil and a fan (not shown in the figure) are disposed at a bottom of the air inlet 206, the cooling/heating coil is connected to a refrigeration system of the refrigerator to provide cooling capacity or provide heat to heat air entering the cooling outer chamber 202, and the fan provides power for air. The cooled or heated air enters the cooling outer cavity 202 through the air inlet 206 to create a low temperature environment or a high temperature environment around the phase change material cavity 203.
Phase change materials such as salt solution and glycol solution which can adjust the phase change point by adjusting the concentration of solute are arranged in the phase change material cavity 203. In order to prevent the vertical temperature difference caused by uneven concentration of the ice slurry up and down due to the ice slurry floating after the salt solution is frozen, as shown in fig. 3, a plurality of parallel fins 214 are arranged on the inner side wall surface of the phase change material cavity 203 at intervals, in order to increase the supporting strength of the phase change material cavity 203, a plurality of vertical supporting fins 215 are arranged at the bottom, the main body of the phase change material cavity 203 and the fins (the parallel fins 214 and the supporting fins 215) are made of metal materials with good heat conductivity, such as copper, aluminum or corresponding alloys, and the fins can also be made of high-heat-conductivity plastics.
The cooling cavity 204 is used for placing fresh products to be stored at super-ice temperature, and a temperature sensor (not shown in the figure) is arranged inside the cooling cavity.
The temperature monitoring display screen 209 is arranged on the heat preservation door 208 and used for displaying the temperature in the monitored cooling inner cavity 204, and meanwhile, the temperature monitoring display screen has a temperature setting function, and different cooling inner cavity temperatures can be set by a user according to different super-ice temperature fields of different kinds of fresh products required to be stored by the user. The specific implementation manner is the prior art, and is not described herein again.
The concentration adjusting device 205 comprises a high-pressure pump 213, a semi-permeable membrane 210, a solution tank, a solid particulate concentration detection device 216, valves V1-V6 and corresponding connecting pipelines. When the refrigeration system of the refrigerator has only a refrigeration function, an electric heating device may be provided at the suction port of the high pressure pump 213. A semi-permeable membrane 210 is disposed within the solution tank, dividing the solution tank into a high concentrate solution region 212 and a low concentrate solution region 211. The outlet of the phase-change material cavity 203 is connected with the inlet of the high-pressure pump 213 through a valve V6, the outlet of the high-pressure pump 213 is divided into two paths, one path is connected with the inlet of the high-concentration solution area 212 through a valve V5, and the other path is connected with the inlet of the phase-change material cavity 203 through a valve V3, a solid particle concentration detection device 216 and a valve V1 in sequence. The outlet of the low concentration solution zone 211 is connected to the pipeline between the solid particle concentration detection device 216 and the valve V1 after passing through the flow meter M and the valve V2 in sequence. The outlet of the high concentration solution zone 212 is connected to the conduit between the high pressure pump 213 and the valve V3 through a valve V4. Valve V3 and solid particulate matter concentration detection device 216 are parallelly connected at the solution tank both ends, constitute the bypass pipe, valve V3 is used for controlling the break-make of bypass pipe, solid particulate matter concentration detection device 216 is through the circulation bypass of periodically opening high-pressure pump 213, detect the solid particulate matter concentration (the concentration of ice thick liquid) in phase change material chamber 203, start-stop with the cold volume supply in the control cooling exocoel 202, make solid particulate matter concentration maintain in certain extent all the time, if the phase change material is the salt solution, ice thick liquid concentration can set up to 30%, therefore the temperature in the phase change material chamber 203 remains stable unchanged all the time.
In order to better understand the operation of the super ice temperature refrigerator of the present invention, the salt solution is taken as an example, and the temperature adjusting step is explained in detail:
(1) the initial concentration of the salt solution in the phase change material cavity 203 is 23%, and the freezing point of the salt solution is-15 ℃;
(2) when the temperature of the super-ice temperature area set by the user is increased, the concentration of the salt solution needs to be reduced. Heating operation is started, a high-temperature environment is provided for the cooling outer cavity 202, low-temperature ice slurry in the phase change material cavity 203 is completely melted into a salt solution, then valves V1, V2, V5 and V6 are opened, valves V3 and V4 are closed, the high-pressure pump 213 is started, the opening time of the high-pressure pump 213 is controlled according to the concentration of the salt solution, and the concentration of the salt solution can be calculated by the following algorithm: if the desalination rate of the semipermeable membrane 210 can reach more than 98%, the initial concentration is m, the total mass of the salt solution is G, the mass passing through the semipermeable membrane 210 is G1, and the concentration after the desalination is stopped is n, wherein n is (m.G-0.98 m.G 1)/G is approximately equal to m.cndot (G-G1)/G. The concentration and freezing point of the salt solution can be determined according to the formula of the crystallization temperature of the sodium chloride solution: t ═ 36.97n257.28n +0.1037, corresponding to a user-set temperature T having a corresponding concentration n. After reaching the specified concentration, the valves V2 and V5 are closed, the valves V3 and V4 are opened, and the high-pressure pump 213 is used for full circulationThe salt solution is adjusted in the ring, the high-pressure pump 213 and all valves are closed after a certain time, the refrigeration operation is started, fresh products needing to be stored at super-ice temperature can be placed after the temperature of the cooling inner cavity 204 reaches the specified requirement, then the valves V1, V3 and V6 are periodically opened, the high-pressure pump 213 is started for bypass circulation, the ice slurry concentration is monitored, and the start and stop of the refrigeration circulation of the cooling outer cavity 202 are controlled according to the change of the ice slurry concentration.
(3) When the temperature of the super-ice temperature area set by the user is reduced, the concentration of the salt solution needs to be increased. Firstly, heating operation is started, low-temperature ice slurry in the phase change material cavity 203 is completely melted into salt solution, then valves V1, V3, V4, V5 and V6 are started, a valve V2 is closed, a high-pressure pump 213 is started, all salt solution is fully circulated to enable the salt solution to return to the initial concentration of the step (1), then circulation is carried out according to the step 2, fresh products needing super-ice-temperature storage can be placed after the temperature of the cooling inner cavity 204 reaches the specified requirement, then valves V1, V3 and V6 are periodically started, valves V2, V4 and V5 are closed, the high-pressure pump 213 is started to carry out bypass circulation, the ice slurry concentration is monitored, and the start and stop of the refrigeration circulation of the cooling outer cavity 204 are controlled according to the change of the ice slurry concentration.
Example 2
As shown in fig. 4, unlike the embodiment 1, the cooling outer chamber 204 of the embodiment is provided with a cooling/heating coil 218 as shown in fig. 5, and the cooling/heating coil 218 is in contact with the outer wall surface (including the side wall, the top and the bottom) of the phase change material chamber 203. The cooling/heating coil 218 is connected to a refrigerating system of the refrigerator, and creates a low temperature environment or a high temperature environment for the phase-change material chamber 203 by heat exchange.
Example 3
As shown in fig. 6, a super-ice-temperature refrigerator is different from embodiment 1 in that a solid particle concentration detection device 216 is omitted in this embodiment, and a liquid level sensor 219 is respectively disposed on both sides of a phase-change material cavity 203 without fins for detecting the height of a solid-liquid mixture. When the height of the mixture reaches the upper limit, the solid particle content is enough, the refrigeration is closed, and when the height of the mixture is lower than the lower limit, the refrigeration is opened.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included within the scope of the present invention.
Claims (10)
1. An ultra-ice-temperature refrigerator is characterized in that: the super-ice temperature area is formed by enclosing a heat-insulation outer wall and a heat-insulation door, a cooling outer cavity, a phase-change material cavity, a cooling inner cavity and a concentration adjusting device are arranged in the super-ice temperature area, the cooling inner cavity, the phase-change material cavity and the cooling outer cavity are sequentially sleeved on one side, close to the heat-insulation door, of the super-ice temperature area from inside to outside, one side of the cooling inner cavity, which is attached to the heat-insulation door, is provided with a fresh product to be stored at the super-ice temperature, phase-change materials are arranged in the phase-change material cavity, phase-change point adjustment is achieved by adjusting the concentration of solutes, the cooling outer cavity is connected with a cooling system of a refrigerator and used for refrigerating or heating the phase-change material cavity, and the.
2. The super ice temperature refrigerator as claimed in claim 1, wherein: the refrigerator also comprises a cold storage area and a freezing area, wherein the temperature range of the cold storage area is 0-8 ℃, the temperature range of the super-ice temperature area is-15 to-0.5 ℃, and the temperature of the freezing area is lower than-18 ℃.
3. The super ice temperature refrigerator as claimed in claim 1, wherein: the cooling outer cavity is provided with an air inlet and an air outlet, the air inlet is provided with a cold/heat supply coil and a fan, the cold/heat supply coil is connected with a cooling system of the refrigerator, and ribs for strengthening heat exchange with the outer wall surface of the phase-change material cavity are arranged in the cooling outer cavity.
4. The super ice temperature refrigerator as claimed in claim 1, wherein: and a cold/heat supply coil pipe which is contacted with the outer wall surface of the phase-change material cavity is arranged in the cooling outer cavity and is connected with a cold system of the refrigerator.
5. The super ice temperature refrigerator as claimed in claim 1, wherein: concentration adjusting device include high-pressure pump, pellicle and solution tank, the pellicle sets up in solution tank, separates into high concentration solution district and low concentration solution district with solution tank, phase change material chamber, high-pressure pump, high concentration solution district, low concentration solution district connect gradually and form a closed circuit, phase change material chamber, high-pressure pump, high concentration solution district connect gradually and form another closed circuit.
6. An ultra-ice-temperature refrigerator according to claim 5, characterized in that: the concentration adjusting device further comprises a solid particle concentration detection device, and the phase change material cavity, the high-pressure pump and the solid particle concentration detection device are sequentially connected to form a closed loop.
7. An ultra-ice-temperature refrigerator according to claim 5, characterized in that: the concentration adjusting device also comprises a liquid level sensor arranged in the phase-change material cavity.
8. The super ice temperature refrigerator as claimed in claim 1, wherein: the phase change material cavity inside wall face be provided with parallel fin, the bottom is provided with a plurality of support fin, parallel fin and support fin all adopt high heat conduction material to make.
9. The super ice temperature refrigerator as claimed in claim 1, wherein: the heat-insulating door and the heat-insulating outer wall are both made of heat-insulating materials with low heat conductivity coefficients, and when the same material is adopted, the thickness of the heat-insulating door is larger than that of the heat-insulating outer wall.
10. The super ice temperature refrigerator as claimed in claim 1, wherein: the heat preservation door on be equipped with temperature monitoring display screen for real-time supervision and regulation super ice temperature district's temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609612.9U CN209944849U (en) | 2019-04-29 | 2019-04-29 | Super-ice-temperature refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920609612.9U CN209944849U (en) | 2019-04-29 | 2019-04-29 | Super-ice-temperature refrigerator |
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| CN209944849U true CN209944849U (en) | 2020-01-14 |
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| CN201920609612.9U Active CN209944849U (en) | 2019-04-29 | 2019-04-29 | Super-ice-temperature refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11970652B1 (en) | 2023-02-16 | 2024-04-30 | Microera Power Inc. | Thermal energy storage with actively tunable phase change materials |
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2019
- 2019-04-29 CN CN201920609612.9U patent/CN209944849U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11970652B1 (en) | 2023-02-16 | 2024-04-30 | Microera Power Inc. | Thermal energy storage with actively tunable phase change materials |
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