CN215983339U - Evaporator for frostless refrigerator and frostless refrigerator - Google Patents
Evaporator for frostless refrigerator and frostless refrigerator Download PDFInfo
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- CN215983339U CN215983339U CN202122217367.7U CN202122217367U CN215983339U CN 215983339 U CN215983339 U CN 215983339U CN 202122217367 U CN202122217367 U CN 202122217367U CN 215983339 U CN215983339 U CN 215983339U
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Abstract
The application relates to an evaporator for a frost-free refrigerator and the frost-free refrigerator, wherein the evaporator for the frost-free refrigerator comprises a multi-row evaporator body and at least one heater arranged in the multi-row evaporator body, and the multi-row evaporator body comprises at least two rows of evaporator assemblies and a connecting pipe; at least two rows of evaporimeter subassembly parallel arrangement, at least one heater dispersion sets up the intermediate space position that two rows at least evaporimeter subassembly parallel arrangement formed, the connecting pipe is used for connecting two rows at least evaporimeter subassemblies, in this application because the heater is in the inside of evaporimeter, its heat direct transfer is to the evaporimeter on, cause the ice on the evaporimeter to melt rapidly, the defect that former design heater body temperature is high, heat exchange efficiency hangs down has been overcome, and, after heat exchange efficiency improved, can reduce the power of heating, reduce the potential safety hazard that causes overheated existence because of the high power.
Description
Technical Field
The application belongs to the technical field of refrigerators, and particularly relates to an evaporator for a frostless refrigerator and the frostless refrigerator.
Background
Refrigerators have become a necessity for most households in modern life. With the improvement of life of people, the frostless refrigerator has entered the family of common people. One of the greatest advantages of the frost-free refrigerator is that automatic defrosting of the refrigerator can be realized. The evaporator for the frost-free refrigerator is an assembly of the evaporator and a heater. During refrigeration, the evaporator works and frosts; when frost on the evaporator reaches a certain degree, the circulation of air in the air duct is affected, the refrigeration effect of the refrigerator is poor or refrigeration is not performed, refrigeration needs to be stopped, and the heater is started to defrost. The evaporator assembly used in the conventional frost-free refrigerator adopts a mode of an upper evaporator and a lower heater, and frost on the evaporator is gradually dissolved into water through the radiation effect of heat during heating, and the water is discharged out of the refrigerator through a water discharge hole. This structure has drawbacks: namely, the heater has high power and long heating time, and the local temperature of the heater is overhigh due to long-time heating, so that potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
For overcoming the evaporimeter that traditional frostless refrigerator used at least to a certain extent and heater power is high when defrosting, heating time is long, and long-time heating can arouse the local high temperature of heater, has the problem of potential safety hazard, this application provides an evaporimeter and frostless refrigerator for frostless refrigerator.
In a first aspect, the present application provides an evaporator for a frost-free refrigerator, comprising:
the multi-row evaporator comprises a multi-row evaporator body and at least one heater arranged inside the multi-row evaporator body;
the multi-row evaporator body comprises at least two rows of evaporator components and connecting pipes;
the at least two rows of evaporator assemblies are arranged in parallel;
the at least one heater is dispersedly arranged at the position of a middle gap formed by the parallel arrangement of the at least two rows of evaporator components;
the connecting pipe is used for connecting the at least two rows of evaporator assemblies.
Further, the method also comprises the following steps:
the at least one cushion block is arranged above the connecting pipe and used for placing the at least one heater.
Further, the at least two rows of evaporator assemblies comprise:
the first row of evaporator assemblies, the second row of evaporator assemblies and the first connecting pipe;
the first row of evaporator assemblies and the second row of evaporator assemblies are arranged in parallel;
the at least one heater is arranged at a middle gap position formed by the parallel arrangement of the first row of evaporator assemblies and the second row of evaporator assemblies;
the connecting pipe is used for connecting the first row of evaporator assemblies and the second row of evaporator assemblies.
Further, the first bank of evaporator assemblies includes:
the first end plate is connected with the first end plate;
the first end plate is used for fixing the first pipeline and the first fin;
the first pipeline is connected with the connecting pipe;
the heater is attached to the first fin.
Further, the second bank of evaporator assemblies includes:
the second fin, the second end plate and the second pipeline;
the second end plate is used for fixing a second pipeline and a second fin;
the second pipeline is connected with the connecting pipe;
the heater is attached to the second fin.
Further, the method also comprises the following steps:
and the fixing plate is used for fixing the at least two rows of evaporator assemblies.
Further, the method also comprises the following steps:
and the refrigeration pipelines are respectively connected with the at least two rows of evaporator assemblies.
Further, the method also comprises the following steps:
a first sensor disposed on the refrigeration circuit.
Further, the method also comprises the following steps:
a second sensor disposed on the at least one heater.
In a second aspect, the present application provides a frost-free refrigerator, comprising:
the evaporator for a frost-free refrigerator according to the first aspect.
Further, the method also comprises the following steps:
a compressor, a condenser, a filter, and a capillary tube;
the compressor is respectively connected with the condenser and the evaporator for the frost-free refrigerator;
the filter and the capillary tube are disposed between the condenser and the evaporator for the frost-free refrigerator.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the evaporator for the frostless refrigerator and the frostless refrigerator provided by the embodiment of the utility model comprise a multi-row evaporator body and at least one heater arranged in the multi-row evaporator body, wherein the multi-row evaporator body comprises at least two rows of evaporator components and a connecting pipe; at least two rows of evaporator assembly parallel arrangement, at least one heater dispersion sets up the intermediate space position that forms at two rows of evaporator assembly parallel arrangement at least, the connecting pipe is used for connecting two rows of evaporator assembly at least, because the heater is in the inside of evaporimeter, its heat direct transfer to the evaporimeter on, cause the ice on the evaporimeter to melt rapidly, the defect that the original design heater body temperature is high, heat exchange efficiency is low has been overcome, and, after heat exchange efficiency improved, can reduce the power of heating, reduce the potential safety hazard that causes overheated existence because of the high power.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic structural diagram of an evaporator for a frost-free refrigerator according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a conventional evaporator for a refrigerator according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an evaporator for a frost-free refrigerator according to another embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of another evaporator for a frost-free refrigerator according to another embodiment of the present disclosure.
Fig. 5 is a schematic structural view of another conventional evaporator for a refrigerator according to an embodiment of the present application.
Fig. 6 is a functional structure diagram of a frostless refrigerator according to an embodiment of the present application.
Fig. 7 is a flowchart of a defrosting method for a frostless refrigerator according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a schematic structural diagram of an evaporator for a frost-free refrigerator according to an embodiment of the present application, and as shown in fig. 1, the evaporator for the frost-free refrigerator includes:
the multi-row evaporator comprises a multi-row evaporator body and at least one heater 1 arranged in the multi-row evaporator body;
the multi-row evaporator body comprises at least two rows of evaporator components and a connecting pipe 4;
at least two rows of evaporator components are arranged in parallel;
the at least one heater is dispersedly arranged at the position of a middle gap formed by the parallel arrangement of the at least two rows of evaporator components;
the connecting pipe is used for connecting at least two rows of evaporator assemblies.
For example, three rows of evaporator assemblies are arranged in parallel, and two heaters are respectively arranged at two middle gap positions formed by the parallel arrangement of the three rows of evaporator assemblies; or two heaters are dispersedly arranged at the middle gap position between the first row of evaporator components and the second row of evaporator components, and three heaters are dispersedly arranged at the middle gap position between the second row of evaporator components and the third row of evaporator components; or the four rows of evaporator components are arranged in parallel, and the three heaters are respectively arranged at three middle gap positions formed by the parallel arrangement of the four rows of evaporator components.
It should be noted that the number of evaporator components and the number of heaters are not limited in the present application, and those skilled in the art can select them according to actual needs.
As shown in fig. 1, the at least two rows of evaporator assemblies comprise a first row of evaporator assemblies 2, a second row of evaporator assemblies 3 and a connecting pipe 4;
the first row of evaporator assemblies 2 and the second row of evaporator assemblies 3 are arranged in parallel;
the connecting pipe 4 is used for connecting the first row of evaporator modules 2 and the second row of evaporator modules 3.
The conventional evaporator for the frost-free refrigerator adopts a mode of an upper evaporator and a lower heater (as shown in fig. 2), and frost on the evaporator is gradually dissolved into water through the radiation effect of heat during heating, and then is discharged out of the refrigerator through a water discharge hole. This structure has drawbacks: namely, the heater has high power and long heating time, and the local temperature of the heater is overhigh due to long-time heating, so that potential safety hazards exist.
In this embodiment, the evaporator for the frost-free refrigerator includes a multi-row evaporator body and at least one heater disposed inside the multi-row evaporator body, the multi-row evaporator body includes at least two rows of evaporator assemblies, the at least two rows of evaporator assemblies include a first row of evaporator assemblies and a second row of evaporator assemblies, the first row of evaporator assemblies and the second row of evaporator assemblies are disposed in parallel, and the connecting pipe is used for connecting the first row of evaporator assemblies and the second row of evaporator assemblies, since the heater is disposed at the middle gap position formed by the parallel arrangement of the first row of evaporator assemblies and the second row of evaporator assemblies, the heat is directly transferred to the evaporator, so that the ice on the evaporator is rapidly melted, the defects of high temperature and low heat exchange efficiency of the original heater body are overcome, and after the heat exchange efficiency is improved, the heating power can be reduced, and the potential safety hazard caused by overheating due to high power is reduced.
As shown in fig. 3 and 4, the evaporator for the frost-free refrigerator further includes:
and the cushion block 5 is arranged above the connecting pipe 4 and used for placing the heater 1.
The first bank of evaporator assemblies 2 includes:
the first fin 21, the first end plate 22, and the first tube 23;
the first end plate 22 is used for fixing the first pipeline 23 and the first fin 21;
the first pipeline 23 is connected with the connecting pipe 4;
the heater 1 is attached to the first fin 21.
When defrosting is carried out, the heater 1 works and heats, and the heat of the heater 1 is directly transferred to the fins to quickly melt ice into water. Because the heater 1 is attached to the fins, the whole evaporator is heated through heat transfer of the fins, and ice is quickly dissolved into water, so that the aim of defrosting is fulfilled.
In some embodiments, the second bank of evaporator assemblies comprises:
the second fin, the second end plate and the second pipeline;
the second end plate is used for fixing the second pipeline and the second fin;
the second pipeline is connected with the connecting pipe 4;
the heater 1 is attached to the second fin.
In some embodiments, further comprising:
and the fixing plate 6 is used for fixing the first row of evaporator assemblies 2 and the second row of evaporator assemblies 3.
The refrigeration line 7 communicates with the first line 23 and the second line.
A first sensor 8, the first sensor 8 being arranged on the refrigeration line 7.
The first sensor 8 is used for acquiring the real-time temperature of the refrigeration pipeline.
And a second sensor 9, the second sensor 9 being disposed on the heater 1.
The second sensor 9 is used to acquire the temperature of the heater surface.
When the refrigerator operates in a refrigerating mode, the evaporator absorbs ambient heat, and cold air is discharged into the refrigerator through the fan, so that the temperature in the refrigerator is reduced. Meanwhile, frost may form on the evaporator. When the frost is formed to a certain degree, the air duct is blocked, and the refrigeration effect is poor or no refrigeration is caused, so that the defrosting treatment is required.
As shown in fig. 2 and 5, the conventional evaporator is assembled by using an upper evaporator and a lower heater, and the evaporator shown in fig. 5 includes two parts, and two heaters are used for heating, but each part of the evaporator also adopts an upper evaporator and a lower heater. When the defrosting condition is met, the compressor stops working, and the heater is started. The heat of the heater is transferred upwards to gradually melt the frost on the evaporator into water, and the melted water is discharged out of the refrigerator through the water outlet. When the sensor on the evaporator tube detects that the temperature meets the requirement, the heater is turned off, the compressor is turned on, and the refrigerator enters the cooling mode again.
The defrosting mode of adopting an upper evaporator and a lower heater has the following problems:
(1) problems that the power of the heater is not easily determined: the power of the heater is too low, so that the heating time is inevitably prolonged, the temperature of the refrigerating chamber is increased, and the food is deteriorated; the power of the heater is too high, the surface temperature of the heater is too high, and certain potential safety hazards exist.
(2) The heat transfer required by defrosting is carried out in a heat radiation mode, the frost on the evaporator is melted from the lower part and gradually ascends, and finally the frost on the evaporator is completely melted. From the process, in order to completely melt the frost on the evaporator, the temperature of the lower part in the air duct is high, and the frost can be discharged into the refrigerator after being cooled. However, the compressor is required to be started for refrigeration firstly, the temperature in the air duct is reduced, and then the air door is opened to refrigerate the temperature of the compartment.
(3) Because the hot air temperature in the evaporation air duct is high, in order to reduce the influence to the compartment, need thickening the bubble layer, cause the cost to increase.
In this embodiment, the evaporator is assembled with the heater, namely: the evaporator is divided into two parts, and the lower parts of the two parts are connected into a whole through a pipeline. Between the two evaporators, a heater is placed, which is placed on the mat. After the assembly is confirmed, the two evaporators are connected by screws through the fixing plate to form a 'sandwich' type evaporator assembly. When refrigerating, the evaporator works normally, and the internal heater does not work. When the defrosting condition is satisfied, the heater starts to operate. The heater is directly contacted with the fins of the evaporator, so that the heat of the heater is directly transferred to the fins of the evaporator, and frost on the fins of the evaporator is melted. Besides the original heat radiation, the utility model also has the function of heat conduction, therefore, the defrosting efficiency can be greatly improved.
In this embodiment, improve the structure of evaporimeter, press from both sides the heater in the middle of two rows of evaporimeter subassemblies, improve the heat exchange efficiency of heater greatly, the improvement of heat exchange efficiency probably reduces the power of heater, reduces the temperature on heater surface, solves because of heater power is too high, the potential safety hazard that the high temperature exists reduces the power consumption of refrigerator, improves refrigerator energy consumption level.
The embodiment of the utility model provides a frostless refrigerator, as shown in a functional structure diagram of fig. 6, the frostless refrigerator comprises:
the evaporator 61 for the frost-free refrigerator as described in the above embodiment.
Further comprising:
a compressor 62, a condenser 63, a filter 64, and a capillary tube 65;
the compressor 62 is connected to the condenser 43 and the evaporator 61 for the frost-free refrigerator, respectively;
a filter 64 and a capillary tube 65 are provided between the condenser 63 and the evaporator 61 for the frost-free refrigerator.
When the refrigerator normally operates, the compressor discharges high-pressure and high-temperature gas, the gas is radiated by the condenser and is gradually cooled into normal-temperature and high-pressure saturated liquid. The condensed refrigerant is filtered by a drying filter to remove moisture and impurities, flows into a capillary tube, is throttled and depressurized, and is changed into normal-temperature low-pressure steam. And then the vapor is vaporized by absorbing heat in the evaporator to become a low-temperature and low-pressure gas. And back again to the compressor. The above processes are repeated to transfer the heat in the refrigerator to the air outside the refrigerator, thereby achieving the purpose of refrigeration.
The evaporator 61 for the frost-free refrigerator can automatically complete defrosting operation, and further improves the refrigeration effect of the refrigerator.
In the embodiment, the power of the heater in the evaporator can be reduced, and the energy consumption index of the whole machine can be improved by matching with a discontinuous working mode, so that the energy consumption grade of the refrigerator is improved.
Fig. 7 is a flowchart of a defrosting method for a frostless refrigerator according to an embodiment of the present application, and as shown in fig. 7, the defrosting method for a frostless refrigerator includes:
s701: acquiring the real-time temperature of a refrigeration pipeline;
s702: judging whether the real-time temperature of the refrigeration pipeline is lower than the defrosting entrance temperature or not;
s703: if yes, judging whether the working time of the refrigerator meets the defrosting entering time requirement or not, and if not, executing S702;
s704: if so, entering a defrosting mode, otherwise, executing S702.
S705: and after entering a defrosting mode, the heater is controlled to be started, and the heater is used for heating and defrosting the first row of evaporator assemblies and the second row of evaporator assemblies which are arranged on the two sides of the heater.
S706: judging whether the real-time temperature of the refrigeration pipeline reaches defrosting exit temperature or not;
s707: if yes, exiting the defrosting mode;
wherein the defrosting entry temperature is less than the defrosting exit temperature.
S708: judging whether the surface temperature of the heater is higher than the working stopping temperature of the heater or not when the real-time temperature of the refrigeration pipeline does not reach the defrosting exit temperature;
s709: if so, controlling the heater to stop heating, and entering a residual heat defrosting mode of the heater, otherwise, executing S705.
S710: after the heater stops heating, judging whether the surface temperature of the heater is lower than the re-working temperature of the heater or not;
s711: if so, control restarts heating, otherwise, execute S709.
Wherein the heater stop operating temperature is greater than the heater restart operating temperature.
According to the steps, the intermittent operation of the heater can be realized, the surface temperature of the heater is reduced, and meanwhile, the waste heat of the heater can be well transmitted to the evaporator to achieve the purpose of defrosting.
Because the heater is arranged in the evaporator, after the heating is carried out for a period of time, frost around the heating pipe is completely melted, so that the surface temperature is greatly increased, and if the control is not carried out, the local temperature of the fins of the evaporator is too high, so that the surface oxidation is caused, and the refrigeration effect is influenced. Therefore, in order to ensure that the surface temperature of the heater is not high, a second sensor is added on the heater, when the surface temperature of the heater reaches the working stop temperature of the heater, the heater is closed, and the waste heat of the steel pipe heater is utilized to defrost; and when the surface temperature of the heater detected by the second sensor drops to the heater re-working temperature, the heater is turned on again. The surface temperature of the heater is ensured to be maintained within a safe working temperature range.
Because the surface temperature of the heater is controlled, the temperature in the air duct is not too high, the influence on the refrigerator chamber is reduced, a foam layer does not need to be thickened, and the cost is reduced.
It should be noted that the setting of the defrosting entry temperature, the defrosting exit temperature, the heater stop operation temperature, the heater restart operation temperature, and the refrigerator defrosting entry time is related to the power of the heater and the area of the evaporator, and the present application is not limited thereto.
In the embodiment, the power of the heater can be reduced, and the energy consumption index of the whole machine can be improved by matching with a discontinuous working mode; the two sensors are respectively used for controlling the entering/exiting of defrosting and controlling the surface temperature of the heater to be in a proper interval, and defrosting is carried out by utilizing the waste heat of the heater, so that the best defrosting effect is achieved, and the method has positive significance for reducing energy consumption and improving energy consumption level of the refrigerator.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
It should be noted that the present invention is not limited to the above-mentioned preferred embodiments, and those skilled in the art can obtain other products in various forms without departing from the spirit of the present invention, but any changes in shape or structure can be made within the scope of the present invention with the same or similar technical solutions as those of the present invention.
Claims (11)
1. An evaporator for a frost-free refrigerator, comprising:
the multi-row evaporator comprises a multi-row evaporator body and at least one heater arranged inside the multi-row evaporator body;
the multi-row evaporator body comprises at least two rows of evaporator components and connecting pipes;
the at least two rows of evaporator assemblies are arranged in parallel;
the at least one heater is dispersedly arranged at the position of a middle gap formed by the parallel arrangement of the at least two rows of evaporator components;
the connecting pipe is used for connecting the at least two rows of evaporator assemblies.
2. The evaporator for the frost-free refrigerator of claim 1, further comprising:
the at least one cushion block is arranged above the connecting pipe and used for placing the at least one heater.
3. The evaporator for the frost-free refrigerator of claim 1 wherein the at least two rows of evaporator assemblies comprise:
the first row of evaporator assemblies, the second row of evaporator assemblies and the first connecting pipe;
the first row of evaporator assemblies and the second row of evaporator assemblies are arranged in parallel;
the at least one heater is arranged at a middle gap position formed by the parallel arrangement of the first row of evaporator assemblies and the second row of evaporator assemblies;
the connecting pipe is used for connecting the first row of evaporator assemblies and the second row of evaporator assemblies.
4. The evaporator for the frost-free refrigerator of claim 3, wherein the first row of evaporator assemblies comprises:
the first end plate is connected with the first end plate;
the first end plate is used for fixing the first pipeline and the first fin;
the first pipeline is connected with the connecting pipe;
the heater is attached to the first fin.
5. The evaporator for the frost-free refrigerator of claim 3, wherein the second bank evaporator assembly comprises:
the second fin, the second end plate and the second pipeline;
the second end plate is used for fixing a second pipeline and a second fin;
the second pipeline is connected with the connecting pipe;
the heater is attached to the second fin.
6. The evaporator for the frost-free refrigerator of claim 3, further comprising:
and the fixing plate is used for fixing the at least two rows of evaporator assemblies.
7. The evaporator for the frost-free refrigerator of claim 1, further comprising:
and the refrigeration pipelines are respectively connected with the at least two rows of evaporator assemblies.
8. The evaporator for the frost-free refrigerator of claim 7, further comprising:
a first sensor disposed on the refrigeration circuit.
9. The evaporator for the frost-free refrigerator of claim 1, further comprising:
a second sensor disposed on the at least one heater.
10. A frost-free refrigerator, comprising:
the evaporator for the frost-free refrigerator of any one of claims 1 to 9.
11. The frost-free refrigerator of claim 10, further comprising:
a compressor, a condenser, a filter, and a capillary tube;
the compressor is respectively connected with the condenser and the evaporator for the frost-free refrigerator;
the filter and the capillary tube are disposed between the condenser and the evaporator for the frost-free refrigerator.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122217367.7U CN215983339U (en) | 2021-09-13 | 2021-09-13 | Evaporator for frostless refrigerator and frostless refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122217367.7U CN215983339U (en) | 2021-09-13 | 2021-09-13 | Evaporator for frostless refrigerator and frostless refrigerator |
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| CN215983339U true CN215983339U (en) | 2022-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115406161A (en) * | 2022-08-31 | 2022-11-29 | 珠海格力电器股份有限公司 | Evaporator defrosting judgment method, control device and refrigerator |
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2021
- 2021-09-13 CN CN202122217367.7U patent/CN215983339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115406161A (en) * | 2022-08-31 | 2022-11-29 | 珠海格力电器股份有限公司 | Evaporator defrosting judgment method, control device and refrigerator |
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