阅读说明：本技术 冷媒流量调节装置、冷媒循环系统及冰箱 (Refrigerant flow adjusting device, refrigerant circulating system and refrigerator ) 是由 任嘉俊 于 2021-01-26 设计创作，主要内容包括：本公开提供一种冷媒流量调节装置、冷媒循环系统及冰箱,冷媒流量调节装置串联设置在冷媒循环系统中,冷媒流量调节装置包括调节腔,调节腔的容积可调,冷媒流量调节装置被配置为通过改变串接在冷媒循环系统中的调节腔的容积,调节冷媒循环系统的其它部件中的冷媒流量。本公开的冷媒流量调节装置,通过改变参与冷媒循环的调节腔的容积,改变冷媒正常循环过程中调节腔内保有的冷媒量,相应的改变蒸发部件内流通的冷媒的流量,使得蒸发部件中的冷媒始终能够保持在最适宜的冷媒流量,冷媒循环系统中的局部能够达到最佳冷媒灌注量,保证蒸发器出口冷媒始终具有一定的过热度,提高压缩机的功率和蒸发器的换热器面积的利用率。(The utility model provides a refrigerant flow adjusting device, refrigerant circulation system and refrigerator, refrigerant flow adjusting device establish ties in refrigerant circulation system, and refrigerant flow adjusting device includes the regulation chamber, and the volume of regulation chamber is adjustable, and refrigerant flow adjusting device is configured to through the volume of changing the regulation chamber of concatenating in refrigerant circulation system, adjusts the refrigerant flow in other parts of refrigerant circulation system. This disclosed refrigerant flow regulator, through the volume that changes the regulation chamber of participating in refrigerant circulation, change the refrigerant volume that the intracavity was kept in the normal cycle process of refrigerant, the flow of the refrigerant of circulation in the corresponding change evaporation unit for the refrigerant among the evaporation unit can keep at optimum refrigerant flow all the time, local in the refrigerant circulation system can reach best refrigerant perfusion volume, guarantee that evaporimeter export refrigerant has certain superheat degree all the time, improve the power of compressor and the utilization ratio of the heat exchanger area of evaporimeter.)

1. The refrigerant flow adjusting device is characterized in that the refrigerant flow adjusting device (2) is arranged in a refrigerant circulating system in series, the refrigerant flow adjusting device (2) comprises an adjusting cavity, the volume of the adjusting cavity is adjustable, and the refrigerant flow adjusting device (2) is configured to adjust the refrigerant flow in other parts of the refrigerant circulating system by changing the volume of the adjusting cavity connected in series in the refrigerant circulating system.

2. The refrigerant flow regulating device according to claim 1, wherein the regulating cavity includes at least two flow passages having different volumes, and any one of the at least two flow passages is configured to be serially connectable in the refrigerant circulation system.

3. The refrigerant flow rate adjusting device according to claim 2, wherein the at least two flow passages have the same inner diameter and different lengths.

4. The refrigerant flow rate adjusting device according to claim 2, wherein the at least two flow passages include a first flow passage (21), a second flow passage (22), a third flow passage (23), and a fourth flow passage (24); the first flow channel (21), the second flow channel (22), the third flow channel (23) and the fourth flow channel (24) respectively correspond to different refrigeration modes of the refrigerant circulating system, and the refrigeration modes comprise a variable-temperature chamber closing mode, a chamber full-open mode, a refrigerating chamber closing mode and a variable-temperature chamber and refrigerating chamber closing mode.

5. The refrigerant flow rate adjusting device according to claim 4, wherein the second flow channel (22) corresponds to the chamber fully open mode, an optimal refrigerant filling amount in the refrigerant circulation system in the chamber fully open mode is U2, an inner diameter of the second flow channel (22) is D, and a length of the second flow channel is L1.

6. The refrigerant flow rate adjusting device according to claim 5, wherein the first flow channel (21) corresponds to the variable-temperature chamber closing mode, an optimal refrigerant filling amount in the refrigerant circulation system in the variable-temperature chamber closing mode is U1, an inner diameter of the first flow channel (21) is D, and a length of the first flow channel (21) is L2:

7. the refrigerant flow rate adjusting device according to claim 5, wherein the third flow channel (23) corresponds to the refrigeration compartment closing mode, an optimal refrigerant filling amount in the refrigerant circulation system in the refrigeration compartment closing mode is U3, an inner diameter of the third flow channel (23) is D, and a length of the third flow channel (23) is L3:

8. the refrigerant flow regulating device according to claim 5, wherein the fourth flow channel (24) corresponds to the closed mode of both the temperature-changing chamber and the refrigerating chamber, an optimal refrigerant filling amount in the refrigerant circulation system in the closed mode of both the temperature-changing chamber and the refrigerating chamber is U4, the inner diameter of the fourth flow channel (24) is D, and the length of the fourth flow channel (24) is L4, so that:

9. refrigerant flow regulating device according to claim 1, characterized in that the regulating chamber comprises a pressure vessel (25), the volume of the pressure vessel (25) being adjustable.

10. A refrigerant circulation system, characterized in that a refrigerant flow rate adjusting device (2) according to any one of claims 1 to 9 is used.

11. The refrigerant circulation system according to claim 10, further comprising an evaporation assembly, wherein the evaporation assembly comprises a refrigeration evaporator (11), a temperature-varying evaporator (12), and a freezing evaporator (13), the refrigeration evaporator (11) is connected in parallel with the temperature-varying evaporator (12) and then connected in series with the freezing evaporator (13), and the refrigeration evaporator (11) and the temperature-varying evaporator (12) are further connected in parallel with a freezing single-open branch (14).

12. The refrigerant cycle system according to claim 11, further comprising a heat regenerator (3), wherein a capillary tube (31) and a straight tube (32) are disposed in the heat regenerator (3), two ends of the evaporation assembly are respectively connected to the capillary tube (31) and the straight tube (32) at the same end of the heat regenerator (3), and a compressor (5), a condenser (6), a refrigerant flow adjusting device (2), a condensation preventing tube (7), and a drying filter (4) are connected in series between the capillary tube (31) and the straight tube (32) at the other end of the heat regenerator (3).

13. A refrigerator, characterized in that, the refrigerant flow rate adjusting device (2) of any one of claims 1 to 9 is adopted, or the refrigerant circulating system of any one of claims 10 to 12 is adopted.

14. The refrigerator of claim 13, wherein the refrigerator comprises a cold storage compartment, a temperature change compartment, and a freezing compartment.

Technical Field

The disclosure belongs to the technical field of refrigerators, and particularly relates to a refrigerant flow adjusting device, a refrigerant circulating system and a refrigerator.

Background

The refrigerant quantity of the refrigeration system of the related art refrigerator product needs to be determined through experiments, and the refrigerant filling quantity matched with the lowest power point is generally adopted. In order to ensure that the refrigerant in the refrigerating system can be fully utilized, the outlet of the evaporator needs to have a certain superheat degree, and the effective heat exchange rate of the refrigerant in the evaporator is higher at the moment.

For a multi-system refrigerator with two or more temperature independent control chambers, the optimal refrigerant filling amount is generally the refrigerant filling amount matched with the lowest power of the system in the full-open mode of the chambers. However, in the fully open mode, it cannot be guaranteed that all the chambers are kept under an optimal effective heat exchange for refrigeration, refrigerant quantity mismatch occurs when the chambers are independently refrigerated, refrigerant non-overheating possibly exists at an evaporator outlet due to excessive refrigerant, residual cold quantity exists, compressor power is wasted, refrigerant overheating possibly occurs in advance due to insufficient refrigerant, refrigerating capacity is insufficient, and refrigerating capacity of the evaporator is reduced.

Disclosure of Invention

Therefore, the technical problem to be solved by the present disclosure is that the refrigerant flow rate is not matched, so that the evaporator outlet is not or is overheated in advance during the compartment refrigeration process of the refrigerator, and the refrigeration capacity is reduced, thereby providing a refrigerant flow rate adjusting device, a refrigerant circulation system and a refrigerator.

In order to solve the above problem, the present disclosure provides a refrigerant flow adjusting device, the refrigerant flow adjusting device is serially connected in a refrigerant circulation system, the refrigerant flow adjusting device includes an adjusting cavity, a volume of the adjusting cavity is adjustable, and the refrigerant flow adjusting device is configured to adjust a refrigerant flow in other components of the refrigerant circulation system by changing a volume of the adjusting cavity serially connected in the refrigerant circulation system.

The purpose of the present disclosure and the technical problems solved thereby can be further achieved by the following technical measures.

In some embodiments, the conditioning chamber includes at least two flow passages, the at least two flow passages have different volumes, and any flow passage of the at least two flow passages is configured to be serially connectable in the refrigerant circulation system.

In some embodiments, at least two of the flow passages have the same inner diameter and different lengths.

In some embodiments, the at least two flow passages include a first flow passage, a second flow passage, a third flow passage, a fourth flow passage; the first flow channel, the second flow channel, the third flow channel and the fourth flow channel respectively correspond to different refrigeration modes of the refrigerant circulating system, and the refrigeration modes comprise a variable-temperature chamber closing mode, a chamber full-open mode, a refrigeration chamber closing mode and a variable-temperature chamber and refrigeration chamber closing mode.

In some embodiments, the second flow channel corresponds to a fully open compartment mode, an optimal refrigerant filling amount in the refrigerant circulation system in the fully open compartment mode is U2, an inner diameter of the second flow channel is D, and a length of the second flow channel is L1.

In some embodiments, the first flow channel corresponds to a variable temperature chamber closing mode, an optimal refrigerant filling amount in the refrigerant circulation system in the variable temperature chamber closing mode is U1, an inner diameter of the first flow channel is D, and a length of the first flow channel is L2, which satisfies:

in some embodiments, the third flow channel corresponds to a refrigeration compartment closing mode, an optimal refrigerant filling amount in the refrigerant circulation system in the refrigeration compartment closing mode is U3, the inner diameter of the third flow channel is D, and the length of the third flow channel is L3:

in some embodiments, the fourth flow channel corresponds to a closed mode of both the temperature-changing chamber and the refrigerating chamber, an optimal refrigerant filling amount in the refrigerant circulation system in the closed mode of both the temperature-changing chamber and the refrigerating chamber is U4, the inner diameter of the fourth flow channel is D, and the length of the fourth flow channel is L4:

in some embodiments, the adjustment chamber comprises a pressure vessel, the volume of which is adjustable.

A refrigerant circulating system adopts the refrigerant flow adjusting device.

The purpose of the present disclosure and the technical problems solved thereby can be further achieved by the following technical measures.

In some embodiments, the refrigerant circulation system further includes an evaporation assembly, the evaporation assembly includes a refrigeration evaporator, a temperature-varying evaporator, and a freezing evaporator, the refrigeration evaporator and the temperature-varying evaporator are connected in parallel and then connected in series, and the refrigeration evaporator and the temperature-varying evaporator are further connected in parallel with a freezing single-open branch.

In some embodiments, the refrigerant cycle system further includes a heat regenerator, a capillary tube and a straight tube are arranged in the heat regenerator, two ends of the evaporation assembly are respectively connected to the capillary tube and the straight tube at the same end of the heat regenerator, and a compressor, a condenser, a refrigerant flow regulating device, a condensation preventing tube and a drying filter are connected in series between the capillary tube and the straight tube at the other end of the heat regenerator.

The refrigerator adopts the refrigerant flow regulating device or the refrigerant circulating system.

In some embodiments, the refrigerator includes a refrigeration compartment, a temperature-changing compartment, and a freezing compartment.

The refrigerant flow adjusting device, the refrigerant circulating system and the refrigerator provided by the disclosure at least have the following beneficial effects:

the refrigerant flow adjusting device disclosed by the invention is characterized in that a volume-adjustable adjusting cavity is connected in series in a refrigerant circulating system, the volume of the adjusting cavity participating in refrigerant circulation is changed, the amount of refrigerant reserved in the adjusting cavity in the normal circulation process of the refrigerant is changed, other parts in the refrigerant circulating system are correspondingly changed, especially the flow of the refrigerant circulating in an evaporation part is changed, the refrigerant circulating system is enabled to be in different working modes, the refrigerant in the evaporation part can be always kept at the most suitable refrigerant flow, the part in the refrigerant circulating system can reach the optimal refrigerant filling amount, the condition that the refrigerant at the outlet of an evaporator has certain superheat degree is ensured, and the power of a compressor and the utilization rate of the heat exchanger area of the evaporator are improved.

Drawings

Fig. 1 is a schematic structural diagram of a refrigerant flow adjusting device and a refrigerant circulation system according to a first embodiment of the disclosure;

fig. 2 is a schematic structural diagram of a refrigerant flow rate adjusting device and a refrigerant circulation system according to another embodiment of the disclosure.

The reference numerals are represented as:

11. a refrigerated evaporator; 12. a temperature-changing evaporator; 13. a refrigeration evaporator; 14. freezing the single-opening branch; 2. a refrigerant flow rate adjusting device; 21. a first flow passage; 22. a second flow passage; 23. a third flow path; 24. a fourth flow path; 25. a pressure vessel; 3. a heat regenerator; 31. a capillary tube; 32. a straight pipe; 4. drying the filter; 5. a compressor; 6. a condenser; 7. and (4) an anti-condensation pipe.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the following embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. It is to be understood that the described embodiments are merely a subset of the disclosed embodiments and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

With reference to fig. 1 to 2, an embodiment of the present disclosure provides a refrigerant flow adjusting device 2, the refrigerant flow adjusting device 2 is serially connected in a refrigerant circulation system, the refrigerant flow adjusting device 2 includes an adjusting cavity, a volume of the adjusting cavity is adjustable, and the refrigerant flow adjusting device 2 is configured to adjust a refrigerant flow in other components of the refrigerant circulation system by changing a volume of the adjusting cavity serially connected in the refrigerant circulation system.

This disclosed refrigerant flow regulator 2, concatenate volume adjustable regulation chamber in refrigerant circulation system, through the volume that changes the regulation chamber of participating in refrigerant circulation, change the refrigerant volume that refrigerant normal cycle in-process regulation intracavity was held, other positions in the corresponding change refrigerant circulation system, especially the flow of the refrigerant of circulation in the evaporation plant, make refrigerant circulation system under the operating mode of difference, the refrigerant in the evaporation plant can keep at optimum refrigerant flow all the time, the part in the refrigerant circulation system can reach best refrigerant perfusion volume, guarantee that evaporimeter export refrigerant has certain superheat degree all the time, improve the power of compressor 5 and the utilization ratio of the heat exchanger area of evaporimeter.

In some embodiments, in order to achieve the volume adjustability of the adjustment cavity, the adjustment cavity includes at least two flow passages, at least two flow passages have different volumes, and any flow passage of the at least two flow passages is configured to be capable of being connected in series in the refrigerant circulation system. Therefore, the refrigerant flow rate adjusting device 2 of the present embodiment can realize the change of the volume of the adjusting cavity when the flow channels with different volumes are connected to the refrigerant circulation system. Furthermore, the runners with different volumes can be connected in a one-time mode, volume change equal to the number of the runners is realized, and volume change larger than the number of the runners can also be connected in a mode of combining any runners.

In some embodiments, at least two of the flow passages have the same inner diameter and different lengths. The inner diameters of the flow channels are the same in the embodiment, the volumes of different flow channels are obtained through different lengths, and the influence on the pressure of the refrigerant is reduced while the flow of the refrigerant in the refrigerant circulating system is changed.

In some embodiments, at least two of the flow passages have the same inner diameter and different lengths. The inner diameters of the flow channels are the same in the embodiment, the volumes of different flow channels are obtained through different lengths, and the influence on the pressure of the refrigerant is reduced while the flow of the refrigerant in the refrigerant circulating system is changed. When the compartment fully-opened mode is converted into other operation modes, the refrigerant demand in the system is reduced, the length of a flow channel connected into the system in series is reduced, and the pressure drop is reduced. Compared with the refrigeration system in the related art, the embodiment has a certain improvement effect on the pressure of the refrigerant in the system.

In some embodiments, the at least two flow passages include a first flow passage 21, a second flow passage 22, a third flow passage 23, a fourth flow passage 24; the first flow channel 21, the second flow channel 22, the third flow channel 23, and the fourth flow channel 24 respectively correspond to different refrigeration modes of the refrigerant circulation system, and the refrigeration modes include a variable-temperature chamber closing mode, a chamber full-open mode, a refrigerating chamber closing mode, and a variable-temperature chamber and refrigerating chamber closing mode. Therefore, the refrigerant flow adjusting device 2 of the embodiment can realize the optimal refrigerant perfusion amount required by at least four different refrigeration modes, and the outlet of the evaporator can have a certain superheat degree in each refrigeration mode, so that the power of the compressor 5 and the utilization rate of the heat exchanger area of the evaporator are improved.

In some embodiments, the second flow channel 22 corresponds to a fully open chamber mode, in which an optimal refrigerant filling amount in the refrigerant circulation system is U2, and the second flow channel 22 has an inner diameter D and a length L1. In the compartment fully-opened mode, the cold storage, freezing and temperature changing compartments are simultaneously opened, the refrigerant flow required by the refrigerant circulation system is the largest, the volume of the second flow passage 22 is the smallest compared with other flow passages, and the length is the shortest under the condition of the same inner diameter.

In some embodiments, the first flow channel 21 corresponds to a variable temperature chamber closing mode, an optimal refrigerant filling amount in the refrigerant circulation system in the variable temperature chamber closing mode is U1, an inner diameter of the first flow channel 21 is D, and a length L2 satisfies:

in the variable-temperature chamber closing mode of the embodiment, the refrigerating chamber and the freezing chamber are normally refrigerated, the refrigerant filling amount required by the refrigerant circulation system is smaller than that in the chamber full-opening mode, and the length of the refrigerant circulation system is larger than that of the first flow channel 21 under the condition of the same inner diameter.

In some embodiments, the third flow channel 23 corresponds to a refrigeration compartment closing mode, an optimal refrigerant filling amount in the refrigerant circulation system in the refrigeration compartment closing mode is U3, an inner diameter of the third flow channel 23 is D, and a length of the third flow channel is L3:

in the refrigeration compartment closing mode of the present embodiment, the variable temperature compartment and the freezing compartment are normally cooled, the refrigerant filling amount required for refrigerant circulation is smaller than that in the compartment full opening mode, and the length is longer than that of the first flow channel 21 under the condition of the same inner diameter.

In some embodiments, the fourth flow channel 24 corresponds to a closed mode of both the temperature-changing chamber and the refrigerating chamber, an optimal filling amount of the refrigerant in the refrigerant circulation system in the closed mode of both the temperature-changing chamber and the refrigerating chamber is U4, an inner diameter of the fourth flow channel 24 is D, and a length L4 satisfies:

in the embodiment, both the variable-temperature chamber and the cold storage chamber are in a closed mode, only the freezing chamber performs normal refrigeration, the refrigerant perfusion amount required by refrigerant circulation is minimum, and the length is maximum under the condition of the same inner diameter.

In this embodiment, the optimal refrigerant filling amount is obtained by filling different refrigerant amounts, such as 70, 68, 66, 64, 62, 60g, to the whole refrigerator in a range of increasing gradually, adjusting to corresponding operation modes (full opening of each compartment, temperature change and refrigeration closing, and refrigeration closing), comparing the power of the refrigerator in stable operation at 32 ℃ and whether the evaporator outlet is overheated, and finding the refrigerant amount when the power of the refrigerator in stable operation is the lowest and the evaporator outlet is overheated (the outlet temperature is greater than the inlet temperature), i.e., the optimal refrigerant filling amount.

In some embodiments, the adjusting chamber includes a pressure container 25, the volume of the pressure container 25 is adjustable, and by adjusting the volume of the pressure container 25, the flow rate of the refrigerant circulating in other parts of the refrigerant circulating system, especially the flow rate of the refrigerant circulating in the evaporation part, can be correspondingly changed, so that the refrigerant in the evaporation part can be always kept at the optimum refrigerant flow rate in different working modes of the refrigerant circulating system, the local part in the refrigerant circulating system can reach the optimum refrigerant filling amount, the refrigerant at the outlet of the evaporator can be ensured to have a certain superheat degree all the time, and the power of the compressor 5 and the utilization rate of the heat exchanger area of the evaporator are improved.

A part of refrigerant is reserved in the pressure container 25 and used for buffering the refrigerant requirement in the system. Initially, i.e. when the compartment is fully open, the pressure vessel 25 has recorded the position H2 of the pressure disc inside the compartment while cooling. When the refrigeration mode is switched, the pressure container 25 detects the temperature of an inlet and an outlet of a main working evaporator (when only one chamber works, only the evaporator of the working chamber is detected; when two or more chambers work, the evaporator of the chamber with the largest refrigeration requirement is detected), when the detected outlet temperature-inlet temperature is less than a certain temperature difference delta t, the refrigerant in the main working evaporator has certain refrigeration capacity, and the pressure container 25 absorbs redundant refrigerant in the system; when the detected outlet temperature-inlet temperature is larger than or equal to a certain temperature difference delta t, the outlet of the evaporator is overheated at the moment, the heat exchange in the evaporator is sufficient, the pressure container 25 discharges the refrigerant into the system, and the temperature difference delta t of the inlet and the outlet of the evaporator in the system and the amount of the refrigerant in the system reach a dynamic balance.

Referring to fig. 1 and 2, the present embodiment provides a refrigerant circulation system, which employs the refrigerant flow rate adjusting device 2.

In some embodiments, the refrigerant circulation system further includes an evaporation assembly, the evaporation assembly includes a refrigeration evaporator 11, a temperature-varying evaporator 12, and a freezing evaporator 13, the refrigeration evaporator 11 and the temperature-varying evaporator 12 are connected in parallel and then connected in series with the freezing evaporator 13, and the refrigeration evaporator 11 and the temperature-varying evaporator 12 are further connected in parallel with a freezing single-open branch 14.

The refrigerant circulation system of the embodiment can realize a plurality of refrigeration modes, in the variable-temperature chamber closing mode, the refrigerant flows through the refrigeration evaporator 11 and the freezing evaporator 13 in series, in the chamber full-opening mode, the refrigerant flows through the refrigeration evaporator 11 and the variable-temperature evaporator 12 in parallel and then flows through the freezing evaporator 13 in series, in the refrigeration chamber closing mode, the refrigerant flows through the variable-temperature evaporator 12 and the freezing evaporator 13 in series, and in the variable-temperature chamber and refrigeration chamber closing mode, the refrigerant directly flows through the freezing single-opening branch 14 and the freezing evaporator 13 in series.

In some embodiments, the refrigerant cycle system further includes a heat regenerator 3, a capillary tube 31 and a straight tube 32 are disposed in the heat regenerator 3, two ends of the evaporation assembly are respectively connected to the capillary tube 31 and the straight tube 32 at the same end of the heat regenerator 3, and a compressor 5, a condenser 6, a refrigerant flow adjusting device 2, a condensation preventing tube 7, and a drying filter 4 are connected in series between the capillary tube 31 and the straight tube 32 at the other end of the heat regenerator 3.

Therefore, the refrigerant circulation system of the embodiment can adjust the refrigerant flow in the evaporation assembly through the refrigerant flow adjusting device 2, provide different local optimal refrigerant perfusion amounts for different refrigeration modes, ensure that the refrigerant at the outlet of the evaporator in a working state has a certain superheat degree all the time, and improve the power of the compressor 5 and the utilization rate of the heat exchanger area of the evaporator.

The embodiment also provides a refrigerator, which adopts the refrigerant flow regulating device 2 or the refrigerant circulating system.

In some embodiments, the refrigerator includes a refrigeration compartment, a temperature-changing compartment, and a freezing compartment. The refrigerating evaporator 11 is arranged in the refrigerating chamber, the variable temperature evaporator 12 is arranged in the variable temperature chamber, the freezing evaporator 13 is arranged in the freezing chamber, and the three evaporators can independently refrigerate different chambers with the best refrigerating performance, so that the power of the compressor 5 and the utilization rate of the heat exchanger area of the evaporators are improved.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present disclosure is to be considered as limited only by the preferred embodiments and not limited to the specific embodiments described herein, and all changes, equivalents and modifications that come within the spirit and scope of the disclosure are desired to be protected. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present disclosure, and these improvements and modifications should also be considered as the protection scope of the present disclosure.