CN215675994U - A kind of refrigerator - Google Patents
A kind of refrigerator Download PDFInfo
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- CN215675994U CN215675994U CN202121452632.3U CN202121452632U CN215675994U CN 215675994 U CN215675994 U CN 215675994U CN 202121452632 U CN202121452632 U CN 202121452632U CN 215675994 U CN215675994 U CN 215675994U
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Abstract
The utility model relates to the technical field of refrigeration equipment, and discloses a refrigerator which comprises a box body, wherein a compressor, a condenser, a refrigerating capillary tube, a refrigerating evaporator, a freezing capillary tube, a freezing evaporator and a first three-way valve are arranged in the box body; the device also comprises a second three-way valve and an external connecting pipe; the second three-way valve is arranged on a communication pipeline between the outlet of the compressor and the inlet of the condenser, the outlet of the compressor is communicated with the inlet of the second three-way valve, the first outlet of the second three-way valve is communicated with the inlet of the condenser, and the second outlet of the second three-way valve is communicated with the inlet of the external pipe; the external connecting pipe extends through the periphery of the refrigeration evaporator, and the outlet of the external connecting pipe is connected to a communication pipeline between the outlet of the condenser and the inlet of the first three-way valve. This application has increased a three-way valve and circulating line in original double evaporator pure parallelly connected refrigerating system structure, short circuit original condenser when changing the frost to the condensation heat that produces is used for the defrosting of refrigeration evaporator when concentrating cold-stored refrigeration.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator.
Background
The refrigerator with the independent evaporator for cold storage and freezing has the advantages of no smell taint between compartments, better performance and defrosting reliability and the like, and is more and more popular with consumers.
Through the rapid development of refrigerator technology, the evaporator of the refrigerating chamber is defrosted by utilizing air circulation without depending on a defrosting heater, so that the defrosting energy consumption and the manufacturing cost are saved. However, defrosting of the freezing chamber evaporator still depends on an electric heating mode, defrosting energy consumption is high, and heat load in the refrigerator is high.
Thus, improvements in the prior art are needed.
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is: the refrigerator is provided to solve the technical problems that defrosting of a freezing chamber evaporator of the refrigerator in the prior art needs an electric heating mode, defrosting energy consumption is high, and indoor heat load is high.
In order to achieve the purpose, the utility model provides a refrigerator which comprises a box body, wherein a compressor, a condenser, a refrigerating capillary tube, a refrigerating evaporator, a freezing capillary tube, a freezing evaporator and a first three-way valve are arranged in the box body;
an outlet of the compressor is communicated with an inlet of the condenser, an outlet of the condenser is communicated with an inlet of the first three-way valve, a first outlet of the first three-way valve is sequentially communicated with inlets of the refrigerating capillary tube, the refrigerating evaporator and the compressor, and a second outlet of the first three-way valve is sequentially communicated with inlets of the freezing capillary tube, the freezing evaporator and the compressor;
the device also comprises a second three-way valve and an external connecting pipe;
the second three-way valve is arranged on a communication pipeline between an outlet of the compressor and an inlet of the condenser, an outlet of the compressor is communicated with an inlet of the second three-way valve, a first outlet of the second three-way valve is communicated with an inlet of the condenser, and a second outlet of the second three-way valve is communicated with an inlet of the external pipe;
the external connecting pipe extends through the periphery of the refrigeration evaporator, and an outlet of the external connecting pipe is connected to a communication pipeline between an outlet of the condenser and an inlet of the first three-way valve.
In some embodiments of the present application, the extension tube is disposed at a bottom of the refrigeration evaporator.
In some embodiments of the present application, the outer diameter of the extension tube is between 6 mm and 8 mm.
In some embodiments of the present application, a refrigerator compartment and a freezer compartment are defined in the cabinet.
In some embodiments of the present application, the refrigeration evaporator is disposed behind the refrigeration chamber, and the freezing evaporator is disposed behind the freezing chamber.
In some embodiments of the present application, the first three-way valve and the second three-way valve are both solenoid valves.
In some embodiments of the present application, an electric control unit is further disposed in the tank, and the electric control unit is electrically connected to the compressor, the first three-way valve, and the second three-way valve;
the electric control unit is used for detecting the accumulated running time of the compressor during single starting, and when the accumulated running time of the compressor during single starting is greater than or equal to 72 hours, the electric control unit controls the switching loop of the second three-way valve to enable the high-temperature and high-pressure refrigerant flowing out of the outlet of the compressor to flow through the external pipe and then flow into the inlet of the first three-way valve.
In some embodiments of the present application, a first temperature sensor electrically connected to the electronic control unit is disposed in the refrigerating chamber, and the first temperature sensor is configured to detect an actual temperature in the refrigerating chamber;
when the actual temperature of the refrigerating chamber is higher than the set gear temperature by 3 ℃ or more, the electric control unit controls the second three-way valve switching loop to enable the high-temperature high-pressure refrigerant flowing out of the outlet of the compressor to flow through the external connecting pipe and then flow into the inlet of the first three-way valve.
In some embodiments of the present application, a second temperature sensor electrically connected to the electronic control unit is disposed in the freezing chamber, and the second temperature sensor is configured to detect an actual temperature in the freezing chamber;
when the actual temperature in the freezing chamber is not higher than the set gear temperature by 3 ℃ or more, the electric control unit controls the second three-way valve switching loop to enable the high-temperature high-pressure refrigerant flowing out of the outlet of the compressor to flow into the external pipe and then flow into the inlet of the first three-way valve.
In some embodiments of the present application, the refrigeration evaporator and the freezing evaporator are fin evaporators.
Compared with the prior art, the refrigerator provided by the embodiment of the utility model has the beneficial effects that:
according to the refrigerator provided by the embodiment of the utility model, the three-way valve and the circulating pipeline are added on the original refrigeration system structure with the double evaporators connected in parallel, and the original condenser is in short circuit connection during defrosting, so that the condensation heat generated during refrigerating and refrigerating is concentrated and used for defrosting of the freezing evaporator. The efficient utilization of condensation heat is realized, the energy is greatly saved, the fluctuation of the temperature of the defrosting stage compartment is small, the structure is simple, the practicability is high, the cost is low, and the batch production is convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a refrigeration system arrangement within a refrigerator in accordance with an embodiment of the present invention;
in the figure, 1, a compressor; 2. a condenser; 3. refrigerating the capillary tube; 4. a refrigerated evaporator; 5. freezing the capillary tube; 6. a refrigeration evaporator; 7. a first three-way valve; 8. a second three-way valve; 9. and (4) an external connecting pipe.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The refrigerator of the preferred embodiment of the utility model comprises a box body, wherein a refrigerating chamber and a freezing chamber are limited in the box body, and a compressor 1, a condenser 2, a refrigerating capillary tube 3, a refrigerating evaporator 4, a freezing capillary tube 5, a freezing evaporator 6 and a first three-way valve 7 are arranged in the box body. The refrigerating evaporator 4 is preferably provided at the rear of the refrigerating chamber, and the freezing evaporator 6 is preferably provided at the rear of the freezing chamber. The refrigerating evaporator 4 and the freezing evaporator 6 may be fin evaporators.
Referring to fig. 1, an outlet of a compressor 1 communicates with an inlet of a condenser 2, and an outlet of the condenser 2 communicates with an inlet of a first three-way valve 7. And a first outlet of the first three-way valve 7 is communicated with the refrigerating capillary 3, the refrigerating evaporator 4 and an inlet of the compressor 1 in sequence to form an R-R loop. And a second outlet of the first three-way valve 7 is communicated with the freezing capillary 5, the freezing evaporator 6 and an inlet of the compressor 1 in sequence to form an R-F loop. The components are communicated through refrigerant pipes to form a refrigerating system with double evaporators connected in parallel.
In the refrigeration process, the compressor 1 compresses the refrigerant in the pipeline into high-temperature high-pressure gaseous refrigerant to be output, the high-temperature high-pressure gaseous refrigerant passes through the condenser 2, the condenser 2 condenses the high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant is changed into high-pressure low-temperature refrigerant after releasing condensation heat, the refrigerant releasing heat passes through the first three-way valve 7, and the first three-way valve 7 performs loop switching according to refrigeration and freezing refrigeration requirements. When the refrigerating chamber needs to be refrigerated, the first three-way valve 7 is switched to the R-R loop, the temperature of the refrigerant is rapidly reduced under the throttling and pressure reducing effects of the refrigerating capillary tube 3, and after the refrigerant is conveyed to the refrigerating evaporator 4, the heat of the refrigerating chamber is rapidly absorbed, so that the refrigerating chamber is refrigerated. After exchanging heat with the refrigeration evaporator, the low-pressure refrigerant returns to the compressor 1 and is compressed again by the compressor 1 into a high-temperature high-pressure gaseous refrigerant, and the whole refrigeration cycle is completed. Similarly, when the freezing chamber needs to be refrigerated, the first three-way valve 7 is switched to the R-F loop, the temperature of the refrigerant is rapidly reduced under the throttling and pressure reducing action of the freezing capillary tube 5, and the refrigerant is transported to the freezing evaporator 6 to rapidly absorb the heat of the freezing chamber to refrigerate the freezing chamber. And then back to the compressor 1. After exchanging heat with the refrigeration evaporator, the low-pressure refrigerant returns to the compressor 1 and is compressed again by the compressor 1 into a high-temperature high-pressure gaseous refrigerant, and the whole refrigeration cycle is completed. The direction of flow of the refrigerant is shown by the arrows in fig. 1.
The refrigeration system of the present application further comprises a second three-way valve 8 and an extension pipe 9.
Referring to fig. 1, a second three-way valve 8 is provided on a communication line between an outlet of the compressor 1 and an inlet of the condenser 2, and the outlet of the compressor 1 communicates with an inlet of the second three-way valve 8. A first outlet of the second three-way valve 8 communicates with an inlet of the condenser 2 to form an R-1 loop. And a second outlet of the second three-way valve 8 is communicated with an inlet of the external connecting pipe 9 to form an R-2 loop. An external pipe 9 extends through the periphery of the refrigeration evaporator 6, and an outlet of the external pipe 9 is connected to a communication pipe between an outlet of the condenser 2 and an inlet of the first three-way valve 7. The outer diameter of the extension tube 9 may be between 6 and 8mm, preferably 4 mm. The extension tube 9 may be sized in other conventional sizes.
Based on the above structure, when the freezing evaporator 6 needs defrosting, the condensation heat generated during refrigerating can be directly utilized. That is, when the defrosting process of the freezing evaporator 6 needs to be started, the second three-way valve 8 is controlled to be switched to the R-2 circuit, so that the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor 1 flows through the external pipe 9, the condensed heat is transferred to the freezing evaporator 6, and the freezing evaporator 6 is defrosted. The refrigerant then flows into the inlet of the first three-way valve 7, and the subsequent refrigerating process is continued.
In some embodiments, the extension tube 9 is provided at the bottom of the refrigeration evaporator 6. In general refrigerator, the electric heater unit that is used for freezing 6 defrosting of evaporimeter locates freezing 6's bottom, and this application is with electric heater unit cancellation back, and usable original mounted position will be taken over 9 extensions and arrange on original mounted position, reduces the change of box structure, is favorable to increasing installation convenience and the repacking cost that reduces as far as possible.
In some embodiments, an electronic control unit is further disposed in the box, the first three-way valve 7 and the second three-way valve 8 are both solenoid valves, a first temperature sensor for detecting an actual temperature in the refrigerating chamber is disposed in the refrigerating chamber, a second temperature sensor for detecting an actual temperature in the freezing chamber is disposed in the freezing chamber, and the compressor 1, the first three-way valve 7, the second three-way valve 8, the first temperature sensor, and the second temperature sensor are all electrically connected to the electronic control unit. The electronic control unit may be configured to detect a single-on cumulative operating time of the compressor 1, and when the single-on cumulative operating time is greater than or equal to 72 hours, it is determined that a certain amount of frost is condensed on the freezer evaporator 6. When the actual temperature of the refrigerating chamber is higher than the set gear temperature by 3 ℃ or more, the refrigerating chamber is considered to have a refrigerating requirement. When the actual temperature in the freezing chamber is not higher than the set gear temperature by 3 ℃ or more, the freezing chamber is considered to have no refrigeration requirement.
The best defrosting time is that the accumulated running time of the compressor 1 after single startup is greater than or equal to 72h, the refrigerating chamber has a refrigerating requirement and the freezing chamber has no refrigerating requirement. It will be appreciated by those skilled in the art that the defrost procedure can be initiated when only one or more of the above needs are met, or as the case may be, and the application is not limited.
In summary, the refrigerator provided by the utility model adds a three-way valve (a second three-way valve 8) and a circulating pipeline (an external pipe 9) on the basis of the original refrigeration system structure with double evaporators connected in parallel, and the original condenser is in short circuit during defrosting, so that the condensation heat generated during refrigerating and refrigerating is concentrated and used for defrosting of the freezing evaporator 6.
Compared with the prior art, the refrigerator provided by the application at least comprises the following beneficial effects:
first, energy is saved. According to the refrigeration principle, when the compartment is refrigerated, heat must be released to the environment to achieve conservation of energy. For a refrigerator, condensation heat has been conventionally regarded as useless energy in addition to heating control of dew and defrosting water, and white water is discharged in the environment. Even in order to improve the product performance, great thought needs to be spent, and the emission efficiency of condensation heat is improved. When defrosting, external heat needs to be introduced, cold and heat in the chamber are balanced, and huge waste of energy is caused. Also, the residual heat of defrosting tends to raise the compartment temperature, resulting in deterioration of the food storage environment of the freezing compartment. And this application proposes the condensation heat that utilizes cold-stored refrigeration to produce, and the frost layer on the heating freezer evaporimeter 6 accomplishes the defrosting of freezer evaporimeter 6, need not to introduce extra heat (like electric heating), has realized the high-efficient utilization of condensation heat, has practiced thrift the energy greatly.
Second, the fluctuation of the chamber temperature during the defrosting stage is small. The temperature of condensation heat is low (the general condensation temperature is 5-15 ℃ higher than the ambient temperature, the surface temperature of the stainless steel frost heater is 200-360 ℃) and the temperature fluctuation of the freezing chamber is small when the structured frost is utilized, so that the food storage quality is effectively improved.
Thirdly, the security is higher. The condensing temperature is much lower than the temperature of the defrosting heating pipe, and the safety problems of ignition caused by dry burning and melting of a heater, abnormal ignition of an electric device, leakage of a refrigerant, ignition and the like are solved.
Fourthly, the system is simple, the practicability is strong, the cost is low, and the batch production is convenient. This application has only increased a three-way valve and one section circulating line, has constituteed a new circulation, and original defrosting heater and fuse (defrosting protection device places the heater high temperature and arouses the safety problem) cancellation, simple structure, and is with low costs. And, because the temperature reduces rapidly when freezer evaporimeter 6 defrosts, the external pipe 9 of this application makes the low temperature refrigerant after freezer evaporimeter 6 no longer flow through condenser 2, avoids drawing down the surface temperature of condenser 2 fast to lead to condenser 2 condensation or frosting (taking 32 ℃ ambient temperature as an example, be less than 29.8 ℃ just can be very much condensation under the environment that humidity is big), destroy condenser 2 original function. In addition, when the freezing chamber evaporator 6 defrosts, the freezing chamber evaporator 6 is equivalent to one condenser 2, if the original condenser 2 is connected in series at the back, a great part of condensation heat is necessarily separated from the original condenser 2, so that the heat for defrosting the freezing chamber evaporator 6 is greatly reduced, and the defrosting reliability is reduced. Therefore, the structural practicability provided by the application is strong, and the mass production is very convenient.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A refrigerator comprises a box body, wherein a compressor, a condenser, a refrigerating capillary tube, a refrigerating evaporator, a freezing capillary tube, a freezing evaporator and a first three-way valve are arranged in the box body;
an outlet of the compressor is communicated with an inlet of the condenser, an outlet of the condenser is communicated with an inlet of the first three-way valve, a first outlet of the first three-way valve is sequentially communicated with inlets of the refrigerating capillary tube, the refrigerating evaporator and the compressor, and a second outlet of the first three-way valve is sequentially communicated with inlets of the freezing capillary tube, the freezing evaporator and the compressor;
the device is characterized by also comprising a second three-way valve and an external connecting pipe;
the second three-way valve is arranged on a communication pipeline between an outlet of the compressor and an inlet of the condenser, an outlet of the compressor is communicated with an inlet of the second three-way valve, a first outlet of the second three-way valve is communicated with an inlet of the condenser, and a second outlet of the second three-way valve is communicated with an inlet of the external pipe;
the external connecting pipe extends through the periphery of the refrigeration evaporator, and an outlet of the external connecting pipe is connected to a communication pipeline between an outlet of the condenser and an inlet of the first three-way valve.
2. The refrigerator as claimed in claim 1, wherein the extension pipe is provided at a bottom of the freezing evaporator.
3. The refrigerator as claimed in claim 1, wherein the outer diameter of the extension pipe is between 6 and 8 mm.
4. The refrigerator as claimed in claim 1, wherein a refrigerating chamber and a freezing chamber are defined in the cabinet.
5. The refrigerator of claim 4, wherein the refrigerating evaporator is provided at a rear of the refrigerating chamber, and the freezing evaporator is provided at a rear of the freezing chamber.
6. The refrigerator according to claim 4, wherein the first and second three-way valves are solenoid valves.
7. The refrigerator according to claim 6, wherein an electric control unit is further disposed in the cabinet, and the electric control unit is electrically connected to the compressor, the first three-way valve, and the second three-way valve;
the electric control unit is used for detecting the accumulated running time of the compressor during single starting, and when the accumulated running time of the compressor during single starting is greater than or equal to 72 hours, the electric control unit controls the switching loop of the second three-way valve to enable the high-temperature and high-pressure refrigerant flowing out of the outlet of the compressor to flow through the external pipe and then flow into the inlet of the first three-way valve.
8. The refrigerator according to claim 7, wherein a first temperature sensor electrically connected to the electronic control unit is provided in the refrigerating chamber, the first temperature sensor being configured to detect an actual temperature in the refrigerating chamber;
when the actual temperature of the refrigerating chamber is higher than the set gear temperature by 3 ℃ or more, the electric control unit controls the second three-way valve switching loop to enable the high-temperature high-pressure refrigerant flowing out of the outlet of the compressor to flow through the external connecting pipe and then flow into the inlet of the first three-way valve.
9. The refrigerator according to claim 8, wherein a second temperature sensor electrically connected to the electric control unit is provided in the freezing chamber, the second temperature sensor being configured to detect an actual temperature in the freezing chamber;
when the actual temperature in the freezing chamber is not higher than the set gear temperature by 3 ℃ or more, the electric control unit controls the second three-way valve switching loop to enable the high-temperature high-pressure refrigerant flowing out of the outlet of the compressor to flow into the external pipe and then flow into the inlet of the first three-way valve.
10. The refrigerator of claim 1, wherein the refrigeration evaporator and the freezing evaporator are both fin evaporators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121452632.3U CN215675994U (en) | 2021-06-28 | 2021-06-28 | A kind of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121452632.3U CN215675994U (en) | 2021-06-28 | 2021-06-28 | A kind of refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN215675994U true CN215675994U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121452632.3U Active CN215675994U (en) | 2021-06-28 | 2021-06-28 | A kind of refrigerator |
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| CN (1) | CN215675994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674119A (en) * | 2022-04-02 | 2022-06-28 | 浙江青风环境股份有限公司 | Frost-inhibiting powder cold drying machine |
-
2021
- 2021-06-28 CN CN202121452632.3U patent/CN215675994U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674119A (en) * | 2022-04-02 | 2022-06-28 | 浙江青风环境股份有限公司 | Frost-inhibiting powder cold drying machine |
| CN114674119B (en) * | 2022-04-02 | 2024-03-01 | 浙江青风环境股份有限公司 | Frosting-inhibiting type powder cold dryer |
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