CN221324791U - Refrigerator with a refrigerator body - Google Patents

Abstract

The application relates to the technical field of household appliances and discloses a refrigerator, which comprises a refrigerating cabin, a defrosting pipeline, a heating device and a switch, wherein the refrigerating cabin is provided with a defrosting pipeline; the evaporator is arranged in the refrigerating cabin, the heating device is arranged outside the refrigerating cabin and is communicated with the refrigerating cabin through a defrosting pipeline; the switch is arranged on the defrosting pipeline and used for controlling the on-off of the defrosting pipeline. When the heating device is arranged outside the refrigerating cabin and heats and defrosts the evaporator in the refrigerating cabin, the influence of temperature fluctuation in a storage space similar to the refrigerating cabin, which is caused in the defrosting process of heating the evaporator, can be effectively reduced.

Description

Refrigerator with a refrigerator body

Technical Field

The application relates to the technical field of household appliances, in particular to a refrigerator.

Background

Refrigerators are very common household appliances in people's daily lives. In the refrigerator operation process, the surface temperature of the evaporator is far lower than the dew point of surrounding air, so that the surface of the evaporator fins is frosted, or when water molecules evaporated from food stored in the refrigerator and water molecules of external air flow through the evaporator, the water molecules gradually frosted on the surface of the evaporator due to the rapid temperature drop influence the refrigerating effect of the evaporator, so that when the frost layer on the surface of the evaporator reaches a certain thickness, defrosting work is needed to be carried out on the evaporator.

In the related art, performing a defrosting operation of an evaporator in a refrigerator includes: the heating device and the evaporator are arranged in a refrigerating cabin where the evaporator is arranged, the heating device is usually arranged at the bottom or the top of the evaporator, and when the evaporator needs to defrost, the heating device is started so that the heating device generates heat for defrosting the evaporator.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the heating device and the evaporator are arranged in the refrigerating cabin together, the heating device is usually a strong electric component with high power, and heat can overflow the refrigerating cabin during heating, so that the temperature of a storage space close to the refrigerating cabin fluctuates, and food storage is affected.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of utility model

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a refrigerator, which can effectively reduce the influence of temperature fluctuation in a storage space similar to a refrigerating cabin caused in the defrosting process of heating an evaporator.

According to the refrigerator provided by the embodiment of the disclosure, the refrigerator comprises a refrigerating cabin, a defrosting pipeline, a heating device and a switch; the evaporator is arranged in the refrigerating cabin, the heating device is arranged outside the refrigerating cabin and is communicated with the refrigerating cabin through a defrosting pipeline; the switch is arranged on the defrosting pipeline and used for controlling the on-off of the defrosting pipeline.

In some embodiments, the heating device comprises a heater and a fan; the fan is arranged corresponding to the heater and is used for driving air to flow into the refrigerating cabin from the defrosting pipeline after exchanging heat with the heater.

In some embodiments, the refrigerator further comprises a controller, the controller being connected to both the heater and the fan for controlling the heater and the fan to operate independently, and the controller being configured to: and at the initial stage of defrosting of the evaporator, controlling the heater and the fan to be opened, and at the final stage of defrosting of the evaporator, controlling the heater to be closed and the fan to be opened.

In some embodiments, the refrigeration compartment is provided with a first air inlet and a first air outlet; the defrosting pipeline comprises a main pipeline, the main pipeline comprises a first air pipe and a second air pipe, and the first air pipe is communicated between an outlet of the heating device and the first air inlet; the second air pipe is communicated between the inlet of the heating device and the first air outlet.

In some embodiments, the switch comprises a first switch and a second switch, the first switch is arranged on the first air pipe and used for controlling the on-off of the first air pipe; the second switch is arranged on the second air pipe and used for controlling the on-off of the second air pipe.

In some embodiments, the refrigerator further comprises a water pan corresponding to the evaporator for receiving water generated by the evaporator, and the defrosting pipeline is at least partially arranged corresponding to the water pan for heating the water pan.

In some embodiments, the defrosting pipeline further comprises a bypass pipeline connected with the main pipeline in parallel, and the bypass pipeline is arranged corresponding to the water receiving disc so as to heat the water receiving disc.

In some embodiments, the switch further comprises a third switch disposed on the main line and/or the bypass line and configured to control on/off of the main line and/or the bypass line, wherein the third switch is configured to: and controlling the conduction of the main pipeline at the initial stage of defrosting of the evaporator, and controlling the conduction of the bypass pipeline at the final stage of defrosting of the evaporator.

In some embodiments, the refrigerator further comprises a storage space; the refrigerating cabin is also provided with a second air inlet and a second air outlet, and the storage space is communicated with the refrigerating cabin through the second air inlet and the second air outlet.

In some embodiments, the switch further includes a fourth switch, where the fourth switch is disposed at the second air inlet and/or the second air outlet, and is used to control the opening and closing of the second air inlet and/or the second air outlet; the fourth switch is configured to control the second air inlet and/or the second air outlet to be closed when the evaporator is frosted so as to disconnect the storage space from the refrigerating cabin, and control the second air inlet and/or the second air outlet to be opened after the defrosting of the evaporator is finished so as to connect the storage space with the refrigerating cabin.

The refrigerator provided by the embodiment of the disclosure can realize the following technical effects: the refrigerator comprises a refrigerating cabin, a defrosting pipeline, a heating device and a switch; the evaporator is arranged in the refrigerating cabin, the heating device is arranged outside the refrigerating cabin and is communicated with the refrigerating cabin through a defrosting pipeline; the switch is arranged on the defrosting pipeline and used for controlling the on-off of the defrosting pipeline. Through locating the evaporator in the refrigeration cabin, heating device locates the refrigeration cabin outdoor, like this, when heating device carries out heating defrosting for the evaporator, can effectively reduce the influence to the evaporator heating and carry out the temperature fluctuation in the storage space that causes in the defrosting process and is close with the refrigeration cabin.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic view of an internal structure of a refrigerator according to an embodiment of the present disclosure;

Fig. 2 is a schematic view illustrating an internal structure of another refrigerator according to an embodiment of the present disclosure, wherein arrows indicate airflow directions at an initial defrosting stage of an evaporator;

Fig. 3 is a schematic view of an internal structure of another refrigerator provided in an embodiment of the present disclosure, wherein an arrow indicates a circulation direction of air flow at a defrosting end of an evaporator;

fig. 4 is a schematic view of an internal structure of still another refrigerator provided in an embodiment of the present disclosure.

Reference numerals:

100: a refrigeration compartment; 110: a first air inlet; 120: a first air outlet; 130: a second air inlet; 140: a second air outlet; 150: an evaporator;

200: a storage space;

300: a defrosting pipeline; 310: a main pipeline; 311: a first air duct; 312: a first air duct; 313: a second air duct; 320: a bypass line; 321: a second air duct;

400: a heating device; 410: a blower; 420: a heater;

500: a switch; 510: a first switch; 511: a first valve; 520: a second switch; 521: a second valve; 530: a third switch; 531: a third valve; 532: a three-way valve; 540: a fourth switch; 541: a fourth valve; 542: a fifth valve;

600: a water receiving tray;

700: a compressor.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the presently disclosed embodiments. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

Referring to fig. 1, the refrigerator includes a storage space 200 and a refrigerating compartment 100, and an evaporator 150 is provided in the refrigerating compartment 100, the storage space 200 being in communication with the refrigerating compartment 100. The refrigerating process of the refrigerator comprises the following steps: the refrigerant at normal temperature enters the evaporator 150, evaporates under the action of the evaporator 150, absorbs surrounding heat, reduces the temperature of the refrigerating cabin 100 where the evaporator 150 is positioned and the storage space 200 communicated with the refrigerating cabin 100, and makes the storage space 200 realize refrigeration, thereby cooling the food stored in the storage space 200 and achieving the purpose of refrigeration and fresh-keeping. The surface of the evaporator 150 may form a frost layer due to a temperature difference with ambient air, which affects the refrigerating effect of the evaporator 150. For this reason, the evaporator 150 needs to be defrosted periodically.

In the existing defrosting technology of the evaporator, the heating device and the evaporator are arranged together in the refrigeration cabin, so that the heating device is usually arranged at the bottom or the top of the evaporator, and when the evaporator needs defrosting, the heating device is started to defrost the evaporator. However, because heating device locates the refrigeration cabin simultaneously with the evaporimeter, the refrigeration cabin is linked together with the storing space, and the heater is the great strong electric part of power, and heat can spill over the refrigeration cabin during the heating, and in indirect transfer to the storing space, and then lead to the storing space temperature to appear undulantly, influence food storage.

The refrigerator provided by the embodiment of the disclosure comprises a refrigerating cabin 100, a defrosting pipeline 300, a heating device 400 and a switch 500; the evaporator 150 is arranged in the refrigerating cabin 100, and the heating device 400 is arranged outside the refrigerating cabin 100 and is communicated with the refrigerating cabin 100 through the defrosting pipeline 300; the switch 500 is disposed on the defrosting pipeline 300, and is used for controlling on-off of the defrosting pipeline 300.

With the embodiment of the present disclosure, the evaporator 150 is disposed in the cooling chamber 100, and the heating device 400 is disposed outside the cooling chamber 100, i.e., the heating device 400 and the evaporator 150 are disposed in different chambers. When defrosting the evaporator 150, the heating device 400 is activated to transfer heat to the refrigerated compartment 100. The heating device 400 is far away from the storage space 200, so that the direct or indirect heat transfer of the heating device 400 to the storage space 200 can be effectively reduced, and the temperature fluctuation of the storage space 200 is reduced, thereby being beneficial to food storage.

In addition, the evaporator 150 has relatively sharp finned tubes, and the heating device 400 is arranged outside the refrigerating compartment 100 where the evaporator 150 is arranged, so that the heating device 400 is prevented from contacting the finned tubes when maintenance or replacement is required, and the safety risk is reduced. And the heating device 400 has larger power, belongs to strong electric components, and can avoid equipment damage caused by long-term heating of the evaporator 150 or other devices by the heating device 400 when the heating device 400 is arranged outside the refrigeration cabin 100.

Alternatively, as shown in fig. 2, the heating device 400 includes a heater 420 and a fan 410, where the fan 410 is disposed corresponding to the heater 420, and is used to drive air to exchange heat with the heater 420 and flow from the defrosting pipe 300 into the refrigerating compartment 100.

Thus, when the evaporator 150 needs to be defrosted, the heater 400 is started, the heater 420 heats the air flow generated by the fan 410, and the hot air flow enters the refrigerating compartment 100 through the defrosting pipeline 300, so that the evaporator 150 is defrosted.

Optionally, the refrigerator further includes a controller connected to the heater 420 and the fan 410 for controlling the heater 420 and the fan 410 to operate independently, and the controller is configured to: at the initial stage of defrosting of the evaporator 150, the heater 420 and the blower 410 are controlled to be turned on, and at the final stage of defrosting of the evaporator 150, the heater 420 is controlled to be turned off, and the blower 410 is controlled to be turned on.

The evaporator 150 has two stages, including an initial stage of defrosting and a later stage of defrosting, and in the initial stage of defrosting of the evaporator 150, the heater 420 and the blower 410 are controlled to operate simultaneously due to a thicker frost layer and high heat requirement. At the later stage of defrosting of the evaporator 150, the surface frost layer of the evaporator 150 is greatly reduced and gradually disappears, at this time, the heat demand of the evaporator 150 is not high, the controller controls the heater 420 to be turned off, the fan 410 to be turned on, the waste heat of the air flow is utilized to defrost the evaporator 150, and the power loss of the heating device 400 is reduced.

Optionally, the refrigerator further includes a temperature sensor, and is connected to the controller, where the temperature sensor is disposed in the refrigeration compartment 100, and the initial temperature of defrosting of the evaporator 150 is set to be T ₁, the final temperature of defrosting of the evaporator 150 is set to be T ₂, and the temperature of non-defrosting of the evaporator 150 is set to be T ₃, where when the temperature sensor detects that the temperature T in the refrigeration compartment 100 reaches T ₁, the controller controls the heater 420 and the fan 410 to be turned on simultaneously, so as to defrost the evaporator 150; when the temperature sensor detects that the temperature T in the refrigerating compartment 100 reaches T ₂, the controller controls the heater 420 to be turned off and the fan 410 to be turned on; when the temperature sensor detects that the temperature T in the refrigeration compartment 100 reaches T ₃, the controller controls the heater 420 to be turned off, and the fan 410 to be turned off, wherein T ₃ is close to the temperature of the storage space.

Optionally, the refrigerator further includes a timing unit, and is connected to the controller, where the controller sets a first time threshold, a second time threshold, and a third time threshold, and when the refrigerating operation duration of the evaporator 150 exceeds the first time threshold, the controller controls the heater and the fan to be turned on simultaneously; when the time period for defrosting the evaporator 150 exceeds the second time threshold, the controller controls the heater to be turned off, and the fan to be turned on, and when the time period for defrosting the evaporator 150 exceeds the third time threshold, the controller controls the heater and the fan to be turned off.

As shown in fig. 1 and 2, optionally, the refrigeration compartment 100 is provided with a first air inlet 110 and a first air outlet 120; the defrosting pipeline 300 comprises a main pipeline 310, wherein the main pipeline 310 is divided into a first air pipe 311 and a second air pipe 313, and the first air pipe 311 is communicated between an outlet of the heating device 400 and the first air inlet 110 of the refrigerating cabin 100; the second air duct 313 communicates between the inlet of the heating device 400 and the first air outlet 120 of the cooling compartment 100.

The cooling compartment 100 communicates with the heating device 400 through the first air duct 311 and the second air duct 313 to form a heat circulation circuit. The hot air generated from the heating device 400 flows into the cooling compartment 100, exchanges heat with the cold air of the cooling compartment 100 to defrost the evaporator 150, and then flows back into the heating device 400.

Optionally, the switch includes a first switch 510 and a second switch 520, where the first switch 510 is disposed on the first air duct 311 and is used for controlling on/off of the first air duct 311; the second switch 520 is disposed on the second air duct 313 and is used for controlling the on/off of the second air duct 313.

Optionally, the first switch 510 is disposed on the first air duct 311 and includes: the first switch 510 is disposed in the first air duct 311, or the first switch 510 is disposed at a port of the first air duct 311, i.e. at the first air inlet 510. The second switch 520 is disposed on the second air duct 313 and includes: the second switch 520 is disposed in the second air duct 313, or the second switch 520 is disposed at a port of the second air duct 313, i.e. the first air outlet 520.

Optionally, the first switch 510 includes a first valve 511, where the first valve 511 is disposed at the first air inlet 110; the second switch 520 includes a second valve 521, where the second valve 521 is disposed at the first air outlet 120. The first valve 511 and the second valve 521 are both connected to a controller, and when the evaporator 150 needs defrosting, the controller controls the first valve 511 and the second valve 521 to be simultaneously opened, and the cooling compartment 100 is communicated with the heating device 400 through the first air duct 311 and the second air duct 313. When defrosting is not required for the evaporator 150, the controller controls the first valve 511 and the second valve 521 to be simultaneously closed, and the cooling compartment 100 is disconnected from the heating device 400.

Alternatively, as shown in fig. 1 and 2, the hot air generated by the heating device 400 flows through the first pipeline 311 in the flowing direction of the main pipeline 310, flows into the refrigeration compartment 100 from the first air inlet 110, flows out from the first air outlet 120, and flows back into the heating device 400 along the second pipeline 313.

Alternatively, the flow direction of the hot air generated by the heating device 400 in the main pipeline 310 may be that the hot air flows through the second pipeline 313, flows into the refrigeration compartment 100 from the first air outlet 120, flows out from the first air inlet 110, and flows back into the heating device 400 along the first pipeline 311, i.e. opposite to the direction indicated by the arrow in fig. 2, which is not shown in the drawing.

Optionally, as shown in fig. 3, the refrigerator further includes a water tray 600, where the water tray 600 corresponds to the evaporator 150 and is used for receiving water generated by the evaporator 150, and the defrosting pipe 300 is at least partially disposed corresponding to the water tray 600 so as to heat the water tray 600.

When the evaporator 150 is defrosted, the frost layer melts to form water and flows into the water pan 600, and the water accumulates in the water pan 600.

In the embodiment of the present disclosure, the defrosting pipeline 300 is at least partially disposed corresponding to the water receiving tray 600, because the defrosting pipeline 300 is communicated with the heating device 400, the hot air flow generated by the heating device 400 flows into the defrosting pipeline 300, which can facilitate evaporation of water in the water receiving tray 600.

Optionally, the defrosting pipeline 300 further includes a bypass pipeline 320, the bypass pipeline 320 is connected in parallel with the main pipeline 310, and the bypass pipeline 320 is disposed corresponding to the water tray 600 to heat the water tray 600.

Optionally, the bypass line 320 is connected in parallel with the first air duct 311.

Optionally, at the end of defrosting the evaporator 150, when the evaporator 150 has low heat requirement, the bypass line 320 is turned on, and the air generated by the heating device 400 flows through the bypass line 320 and then flows into the refrigeration compartment 100 from the first air duct 311, so that the hot air circulated by the bypass line 320 is beneficial to the evaporation of water in the water tray 600.

Optionally, the switch further includes a third switch 530, where the third switch 530 is disposed on the main pipeline 310 and/or the bypass pipeline 320, and is used to control on-off of the main pipeline 310 and/or the bypass pipeline 320, and the third switch 530 is configured to: the main line 310 is controlled to be turned on at the initial stage of defrosting of the evaporator 150, and the bypass line 320 is controlled to be turned on at the final stage of defrosting of the evaporator 150.

Optionally, a third switch 530 is provided on the main line 310 and/or the bypass line 320, including: the third switch 530 is disposed in the main pipeline 310; the third switch 530 is disposed in the bypass line 320; the third switch 530 is provided to both the main line 310 and the bypass line 320. By providing the third switch 530, the third switch 530 controls the main pipe 310 to be turned on in the initial stage of defrosting of the evaporator 150, and the air generated from the heating device 400 does not flow through the bypass pipe 320, i.e., the air flow direction indicated by the arrow in fig. 2, thus providing the maximum heat for defrosting the evaporator 150. In the later stage of defrosting of the evaporator 150, when the heat requirement of the evaporator 150 is not high, the third switch 530 controls the bypass line 320 to be turned on, and the air flow generated by the heating device 400 flows through the bypass line 320, that is, the air flow direction indicated by the arrow in fig. 3, so that evaporation of water in the water receiving tray 600 corresponding to the bypass line 320 can be facilitated.

Optionally, the third switch 530 includes a third valve 531 and a three-way valve 532, and the third valve 531 and the three-way valve 532 are both connected to the controller, one of the third valve 531 and the three-way valve 532 is disposed at the inlet of the bypass line 320, and the other is disposed at the outlet of the bypass line 320.

Optionally, the first air duct 311 is provided with a first air duct 312, the bypass pipeline 320 is provided with a second air duct 321, a first end of the three-way valve 532 is communicated with the first air duct 312, a second end of the three-way valve 532 is communicated with the second air duct 321, and a third end of the three-way valve 532 is communicated with the heating device 400.

At the initial stage of defrosting of the evaporator 150, as shown in fig. 2 and 3, the controller controls the third valve 531 to be closed, and the three-way valve 532 controls the heating device 400 to be connected to the first air duct 312, so that the air generated by the heating device 400 does not flow through the bypass line 320, and the maximum heat is ensured to flow into the refrigerating compartment 100. At the end of defrosting of the evaporator 150, the controller controls the third valve 531 to be opened, and the three-way valve 532 controls the heating device 400 to be communicated with the second air duct 321, so that air generated by the heating device 400 flows through the bypass line 320, and heat in the bypass line 320 evaporates water in the water pan 600.

Optionally, as shown in fig. 4, the refrigerator further includes a storage space 200, the refrigeration compartment 100 is further provided with a second air inlet 130 and a second air outlet 140, and the storage space 200 is communicated with the refrigeration compartment 100 through the second air inlet 130 and the second air outlet 140.

The storage space 200 is used for storing articles to be stored in a low-temperature environment, and the storage space 200 is communicated with the refrigerating compartment 100 through the second air inlet 130 and the second air outlet 140, so that the evaporator 150 transfers cold energy to the storage space 200.

Optionally, in conjunction with fig. 4, the switch further includes a fourth switch 540, where the fourth switch 540 is disposed at the second air inlet 130 and/or the second air outlet 140, and is used to control the opening and closing of the second air inlet 130 and the second air outlet 140; the fourth switch 540 is disposed at the second air inlet 130; the fourth switch 540 is disposed at the second air outlet 140; the second air inlet 130 and the second air outlet 140 are both provided with a fourth switch 540. In the embodiment of the present disclosure, a fourth switch 540 is optionally disposed at each of the second air inlet 130 and the second air outlet 140.

The fourth switch 540 is configured to control the second air inlet 130 and the second air outlet 140 to be closed when the evaporator 150 is frosted, so that the storage space 200 and the refrigeration compartment 100 are disconnected, and control the second air inlet 130 and the second air outlet 140 to be opened after the evaporator 150 is frosted, so that the storage space 200 and the refrigeration compartment 100 are communicated.

Optionally, the fourth switch 540 includes a fourth valve 541 and a fifth valve 542, and both the fourth valve 541 and the fifth valve 542 are connected to the controller. The fourth valve 541 is disposed at the second air outlet 140, and the fifth valve 542 is disposed at the second air inlet 130.

By providing the fourth valve 541 and the fifth valve 542, the second air outlet 140 and the second air inlet 130 are controlled to be opened and closed, and when the fourth valve 541 and the fifth valve 542 control the second air outlet 140 and the second air inlet 130 to be opened simultaneously, the refrigeration compartment 100 is communicated with the storage space 200, and forms a cooling circulation loop. When the fourth valve 541 and the fifth valve 542 control the second air outlet 140 and the second air inlet 130 to be simultaneously closed, the evaporator 150 is in a defrosting state, so that the hot air generated by the heating device 400 can be prevented from flowing into the storage space 200, and the temperature of the storage space 200 is prevented from fluctuating.

Optionally, a temperature sensor is disposed in the refrigeration compartment 100, the average temperature in the storage space 200 is set to be T ₄, the evaporator 150 stops defrosting, the controller controls the fourth valve 541 and the fifth valve 542 to be opened, the first valve 511, the second valve 521 and the third valve 531 to be closed, the three-way valve 532 controls the bypass line 320 to be disconnected, the controller controls the heater 420 and the fan 410 to be simultaneously closed, the evaporator 150 enters the refrigeration stage, and the compressor 700 starts to operate. The temperature sensor monitors that the temperature in the refrigerating compartment 100 reaches T ₄, i.e., the temperature in the refrigerating compartment 100 is the same as the average temperature in the storage space 200, the fourth valve 541 and the fifth valve 542 are opened, and the refrigerating compartment 100 communicates with the storage space 200, thereby reducing temperature fluctuation of the storage space 200.

The refrigerator provided by the embodiment of the disclosure can realize the following technical effects: the refrigerator comprises a refrigerating cabin 100, a storage space 200, a defrosting pipeline 300, a heating device 400 and a switch; the evaporator 150 is arranged in the refrigerating cabin 100, and the heating device 400 is arranged outside the refrigerating cabin 100 and is communicated with the refrigerating cabin 100 through the defrosting pipeline 300; the switch is arranged on the defrosting pipeline 300 and used for controlling the on-off of the defrosting pipeline 300. The evaporator 150 is disposed in the refrigerating compartment 100, and the heating device 400 is disposed outside the refrigerating compartment 100, so that the heating device 400 is prevented from directly or indirectly heating the storage space 200. When the temperature of the refrigerating compartment 100 is detected to be close to that of the storage space 200, the refrigerating compartment 100 is communicated with the storage space 200, so that the temperature fluctuation of the storage space 200 can be effectively reduced, and the food in the storage space 200 is prevented from deteriorating.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A refrigerator, comprising:

a refrigeration compartment;

The evaporator is arranged in the refrigerating cabin;

The heating device is arranged outside the refrigerating cabin;

a defrosting pipeline communicated between the refrigeration cabin and the heating device;

The switch is arranged on the defrosting pipeline and used for controlling the on-off of the defrosting pipeline.

2. The refrigerator of claim 1, wherein the heating means comprises:

a heater;

the fan is arranged corresponding to the heater and used for driving air to flow into the refrigerating cabin from the defrosting pipeline after exchanging heat with the heater.

3. The refrigerator of claim 2, further comprising:

And a controller, which is connected with the heater and the fan, is used for controlling the heater and the fan to work independently, and is configured to: and at the initial stage of defrosting of the evaporator, controlling the heater and the fan to be opened, and at the final stage of defrosting of the evaporator, controlling the heater to be closed and the fan to be opened.

4. The refrigerator according to claim 1, wherein,

The refrigerating cabin is provided with a first air inlet and a first air outlet;

the defrosting pipeline comprises: a main pipeline, the main pipeline comprising:

the first air pipe is communicated between the outlet of the heating device and the first air inlet;

The second air pipe is communicated between the inlet of the heating device and the first air outlet.

5. The refrigerator of claim 4, wherein the switch comprises:

The first switch is arranged on the first air pipe and used for controlling the on-off of the first air pipe;

the second switch is arranged on the second air pipe and used for controlling the on-off of the second air pipe.

6. The refrigerator of claim 4, further comprising:

The defrosting pipeline is at least partially arranged corresponding to the water receiving disc so as to heat the water receiving disc.

7. The refrigerator of claim 6, wherein the defrosting line further comprises:

The bypass pipeline is connected with the main pipeline in parallel and is arranged corresponding to the water receiving disc so as to heat the water receiving disc.

8. The refrigerator of claim 7, wherein the switch further comprises:

The third switch is arranged on the main pipeline and/or the bypass pipeline and is used for controlling the on-off of the main pipeline and/or the bypass pipeline, and the third switch is configured to: and controlling the conduction of the main pipeline at the initial stage of defrosting of the evaporator, and controlling the conduction of the bypass pipeline at the final stage of defrosting of the evaporator.

9. The refrigerator according to any one of claims 1 to 8, further comprising:

a storage space;

The refrigerating cabin is also provided with: the storage space is communicated with the refrigerating cabin through the second air inlet and the second air outlet.

10. The refrigerator of claim 9, wherein the switch further comprises:

The fourth switch is arranged at the second air inlet and/or the second air outlet and is used for controlling the opening and closing of the second air inlet and/or the second air outlet; wherein the fourth switch is configured to: and when the evaporator is frosted, the second air inlet and/or the second air outlet are/is controlled to be closed so as to disconnect the storage space from the refrigerating cabin, and after the defrosting of the evaporator is finished, the second air inlet and/or the second air outlet are/is controlled to be opened so as to connect the storage space with the refrigerating cabin.