CN204115335U - A kind of direct-cooled fresh-keeping refrigerator - Google Patents
A kind of direct-cooled fresh-keeping refrigerator Download PDFInfo
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- CN204115335U CN204115335U CN201420682251.8U CN201420682251U CN204115335U CN 204115335 U CN204115335 U CN 204115335U CN 201420682251 U CN201420682251 U CN 201420682251U CN 204115335 U CN204115335 U CN 204115335U
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Abstract
The utility model relates to a kind of direct-cooled fresh-keeping refrigerator.Comprise refrigerating chamber, refrigerating chamber, compressor, condenser, capillary, refrigerating evaporator and refrigeration evaporator.Be filled with phase-change material for cold storage between refrigeration evaporator and freezer wall, the cold of refrigeration evaporator is indirectly transferred to freezer wall and refrigerator space by phase-change material for cold storage.Phase-change material for cold storage has thermal inertia, its phase transition process is the constant temperature process absorbing along with larger cold or discharge, the direct-cooled fresh-keeping refrigerator that the utility model proposes is under utilizing the thermal inertia of phase-change material for cold storage to regulate the prerequisite of the start/stop of compressor frequency of refrigeration system, by reducing refrigerator temperature, upper and lower bound is set, the temperature fluctuation realizing refrigerating chamber remain on design temperature ± 1 DEG C within the scope of, avoid high frequent start and stop simultaneously.
Description
Technical field
The utility model belongs to household appliances refrigerator technical field, is specifically related to a kind of direct-cooled fresh-keeping refrigerator.
Background technology
Tradition direct cooling refrigerator periodic running, temperature of refrigerating chamber fluctuation is large, is unfavorable for food fresh keeping.When once there are some researches show that temperature of refrigerating chamber fluctuates within the scope of ± 3 DEG C, the fresh keeping time of leaf vegetables was 2 ~ 3 days, and when temperature fluctuates within the scope of ± 0.5 DEG C, the fresh keeping time of leaf vegetables can bring up to 4 ~ 7 days.So reduce temperature of refrigerating chamber fluctuation to become the key improving fridge freshness retaining performance.On this basis, although the scheme that phase-change material for cold storage is applied on refrigerator at present has and proposes, but be only limitted to simply place some cold storage boxes (or hold-over plate) at the refrigerating chamber of refrigerator or refrigerating chamber, to reduce for the purpose of start/stop of compressor frequency and refrigerator energy-saving, focus is not placed on and utilizes the thermal inertia of phase-change material for cold storage to realize the fluctuation of reduction temperature of refrigerating chamber with this key technology aspect of fresh keeping property improving refrigerator.The one-sided upper and lower bound reducing refrigerator temperature and arrange on traditional direct cooling refrigerator in addition, although temperature of refrigerating chamber fluctuation can be reduced on the surface, but cause the start/stop of compressor frequency of refrigeration system to increase, make the energy consumption level of refrigerator higher than original energy consumption level, lose more than gain, can not be satisfactory to both parties.
Thermal inertia refers to and adds a certain amount of heat to certain material, the character of the temperature change speed of material surface at certain hour.Phase-change material for cold storage is when undergoing phase transition, the temperature of material self almost remains unchanged before and after phase transformation completes, this " thermal inertia " of phase-change material for cold storage is conducive to the variations in temperature of environment residing for phase-change material for cold storage to maintain in less scope, and the phase transition process of phase-change material for cold storage is attended by larger cold and absorbs or release simultaneously.
Utility model content
For temperature of refrigerating chamber in refrigerator fluctuation should be reduced with the fresh keeping property improving refrigerator, avoid the problem of high frequent start and stop again, the utility model proposes a kind of direct-cooled fresh-keeping refrigerator.
A kind of direct-cooled fresh-keeping refrigerator, comprises refrigerating chamber, refrigerating chamber, compressor, condenser, capillary, refrigerating evaporator and refrigeration evaporator.Phase-change material for cold storage is filled with between described refrigeration evaporator and freezer wall, the cold of refrigeration evaporator is indirectly transferred to freezer wall and refrigerator space by phase-change material for cold storage, described phase-change material for cold storage has thermal inertia, its phase transition process is the constant temperature process absorbing along with larger cold or discharge, described direct-cooled fresh-keeping refrigerator is under utilizing the thermal inertia of phase-change material for cold storage to regulate the prerequisite of the start/stop of compressor frequency of refrigeration system, by reducing the upper and lower bound that refrigerator temperature is arranged, the temperature fluctuation realizing refrigerating chamber remain on design temperature ± 1 DEG C within the scope of.Avoid high frequent start and stop simultaneously.
Described phase-change material for cold storage to be phase transition temperature be one pack system or the multicomponent organic or inorganic solid-liquid phase change material of-10 DEG C ~ 5 DEG C.
The utility model compared with prior art, has the following advantages and beneficial effect:
The direct-cooled fresh-keeping refrigerator that the utility model proposes is under utilizing the thermal inertia of phase-change material for cold storage to regulate the prerequisite of the start/stop of compressor frequency of refrigeration system, by reducing the upper and lower bound that refrigerator temperature is arranged, the temperature fluctuation realizing refrigerating chamber remain on design temperature ± 1 DEG C within the scope of.Avoid high frequent start and stop simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Sequence number in upper figure: compressor 1, condenser 2, capillary 3, refrigerating chamber 4, refrigerating evaporator 5, refrigerating chamber 6, phase-change material for cold storage 7, refrigeration evaporator 8.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the utility model is further described.
See Fig. 1, a kind of direct-cooled fresh-keeping refrigerator comprises refrigerating chamber 4, refrigerating chamber 6, compressor 1, condenser 2, capillary 3, refrigerating evaporator 5 and refrigeration evaporator 8.Phase-change material for cold storage 7 is filled with between refrigeration evaporator 8 and refrigerating chamber 6 inwall.Phase-change material for cold storage 7 to be phase transition temperatures be one pack system or the multicomponent organic or inorganic solid-liquid phase change material of-10 DEG C ~ 5 DEG C.
Operation principle of the present utility model is described as follows:
When refrigerating chamber 6 temperature rises to the higher limit of design temperature, compressor 1 starts, refrigeration working medium is entered condenser 2 condensation heat release to environment space after compressor 1 compressed action, temperature and pressure reduces, refrigerating evaporator 5 and refrigeration evaporator 8 is entered after the further decrease temperature and pressure of capillary 3 throttling, released cold quantity is to phase-change material for cold storage 7 and refrigerating chamber 6 space, phase-change material for cold storage 7 temperature progressively reduces and reaches phase transformation temperature points and undergoes phase transition accumulation a large amount of cold continued to be as cold as certain low temperature, when refrigerating chamber 6 temperature is reduced to the lower limit of design temperature, compressor 1 is shut down.After compressor 1 is shut down; the temperature of phase-change material for cold storage 7 slowly raises; a large amount of colds be discharged to refrigerating chamber 6 space when reaching phase transformation temperature points; make refrigerating chamber 6 temperature within the quite a long time, keep stable; when refrigerating chamber 6 temperature rises to the higher limit of design temperature; compressor 1 starts again, completes one-period.So repeatedly, the operation characteristic of direct-cooled fresh-keeping refrigerator described in the utility model is defined.
It should be noted last that: above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-described embodiment, member of ordinary skill in the art should be understood to: still can modify to the utility model or equivalent replacement, and do not depart from any modification or partial replacement of spirit and scope of the present utility model, as changed phase-change material for cold storage filling position different between refrigeration evaporator from freezer wall, or the installation site that refrigeration evaporator is different in refrigerating chamber casing, or adopt dissimilar evaporimeter, or adopt the phase-change material for cold storage of heterogeneity, it all should be encompassed among right of the present utility model.
Claims (2)
1. a direct-cooled fresh-keeping refrigerator, comprises refrigerating chamber, refrigerating chamber, compressor, condenser, capillary, refrigerating evaporator and refrigeration evaporator, it is characterized in that: between described refrigeration evaporator and freezer wall, be filled with phase-change material for cold storage, the cold of refrigeration evaporator is indirectly transferred to freezer wall and refrigerator space by phase-change material for cold storage, described phase-change material for cold storage has thermal inertia, its phase transition process is the constant temperature process absorbing along with larger cold or discharge, described direct-cooled fresh-keeping refrigerator is under utilizing the thermal inertia of phase-change material for cold storage to regulate the prerequisite of the start/stop of compressor frequency of refrigeration system, by reducing the upper and lower bound that refrigerator temperature is arranged, realize temperature of refrigerating chamber fluctuation remain on design temperature ± 1 DEG C within the scope of, avoid high frequent start and stop simultaneously.
2. the direct-cooled fresh-keeping refrigerator of one according to claim 1, is characterized in that: described phase-change material for cold storage to be phase transition temperature be one pack system or the multicomponent organic or inorganic solid-liquid phase change material of-10 DEG C ~ 5 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682251.8U CN204115335U (en) | 2014-11-15 | 2014-11-15 | A kind of direct-cooled fresh-keeping refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420682251.8U CN204115335U (en) | 2014-11-15 | 2014-11-15 | A kind of direct-cooled fresh-keeping refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204115335U true CN204115335U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420682251.8U Active CN204115335U (en) | 2014-11-15 | 2014-11-15 | A kind of direct-cooled fresh-keeping refrigerator |
Country Status (1)
| Country | Link |
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| CN (1) | CN204115335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296457A (en) * | 2014-11-15 | 2015-01-21 | 中国科学技术大学 | Direct cooling fresh keeping refrigerator |
| CN110131953A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A kind of super ice temperature refrigerator |
-
2014
- 2014-11-15 CN CN201420682251.8U patent/CN204115335U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296457A (en) * | 2014-11-15 | 2015-01-21 | 中国科学技术大学 | Direct cooling fresh keeping refrigerator |
| CN110131953A (en) * | 2019-04-29 | 2019-08-16 | 中国科学院广州能源研究所 | A kind of super ice temperature refrigerator |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |