CN117968308A

CN117968308A - Refrigerating and freezing device

Info

Publication number: CN117968308A
Application number: CN202211321115.1A
Authority: CN
Inventors: 李华刚; 郑起; 崔展鹏; 陈建全; 王少一; 刘山山
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2024-05-03

Abstract

The present invention relates to a refrigerating and freezing device, comprising: the refrigerator comprises a box body, wherein a refrigerating compartment, a temperature changing compartment and a freezing compartment for storing articles are defined in the box body, a heat exchange plate is arranged in the temperature changing compartment, and the temperature changing compartment is divided into a cooling space and a temperature changing storage space which are in thermal connection through the heat exchange plate; a heat exchange system configured to provide refrigeration capacity for the refrigeration compartment, the temperature change compartment, and the freezing compartment; and the air path system is configured to convey the cooling air flow subjected to heat exchange by the heat exchange system to the refrigerating room and the freezing room, and selectively convey the cooling air flow subjected to heat exchange by the heat exchange system to the variable-temperature storage space and/or to the cooling space so that the cooling capacity is transferred to the variable-temperature storage space through the heat exchange plate. The temperature-changing compartment can be switched in various modes such as cold storage, even cooling, freezing and the like, and the fresh-keeping effect is improved.

Description

Refrigerating and freezing device

Technical Field

The invention relates to a refrigeration technology, in particular to a refrigeration device.

Background

In daily life, people mainly use refrigerators to cool and store foods. Most of the refrigerators at present belong to freezing and refrigerating refrigerators, and are provided with a plurality of compartments such as a freezing chamber, a refrigerating chamber, a temperature changing chamber and the like, and the refrigerating capacity is provided by an evaporator. The temperature adjusting range of the temperature changing chamber is larger, and the temperature changing chamber can be switched between refrigeration and freezing, so that the requirements of different users on different food storage temperatures are met.

Because the room temperature difference between the freezing room and the refrigerating room is large, the temperature setting range of the temperature changing room is wide, and the air path of the evaporator needs to be designed for adjusting the air quantity of each room to maintain different temperatures of each room aiming at the condition that one evaporator supplies air to a plurality of rooms of different types. Therefore, the fresh-keeping and refrigerating effects and the electric energy efficiency of the refrigerating chamber can be directly affected by the design of the air path. In the traditional air path design, the temperature interval of the temperature changing chamber is controlled mainly by controlling the air inlet quantity of the temperature changing chamber. When the temperature changing chamber is arranged as a refrigerating zone, the cooling air flow directly flows into the temperature changing chamber, so that the temperature of a local area of the refrigerating chamber adjacent to the air outlet is lower, food materials are easy to freeze and bad, and the fresh-keeping effect of the refrigerating chamber is affected. And, because of the cold energy requirement of the freezing chamber, the temperature changing chamber can not realize the function of quick freezing basically.

Disclosure of Invention

The invention aims to overcome at least one defect of the prior art and provides a refrigeration and freezing device which is provided with three chambers of refrigeration, freezing and temperature changing and can realize the functions of even cooling, freezing and the like.

It is a further object of the present invention to simplify the air path design of a refrigeration chiller.

In order to achieve the above object, the present invention provides a refrigerating and freezing apparatus comprising:

the refrigerator comprises a box body, wherein a refrigerating compartment, a temperature changing compartment and a freezing compartment for storing articles are defined in the box body, a heat exchange plate is arranged in the temperature changing compartment, and the temperature changing compartment is divided into a cooling space and a temperature changing storage space which are in thermal connection through the heat exchange plate;

A heat exchange system configured to provide cooling capacity for the refrigeration compartment, the temperature change compartment, and the freezer compartment; and

And the air path system is configured to convey the cooling air flow subjected to heat exchange by the heat exchange system to the refrigerating room and the freezing room, and selectively convey the cooling air flow subjected to heat exchange by the heat exchange system to the variable-temperature storage space and/or the cooling space so as to enable the cold energy to be transferred to the variable-temperature storage space through the heat exchange plate.

Optionally, the temperature-changing compartment is provided with a refrigeration gear, a freezing gear and a quick-freezing gear with gradually increased cold energy demand,

When the temperature-changing compartment is in the refrigeration gear, the air path system controllably delivers only cooling air flow to the cooling space;

when the temperature-changing compartment is in the freezing gear, the air path system is controlled to convey cooling air flow only to the temperature-changing storage space;

When the temperature changing compartment is in the quick-freezing gear, the air path system is controlled to simultaneously convey cooling air flow to the cooling space and the temperature changing storage space.

Optionally, the heat exchange system comprises a first evaporator and a second evaporator;

The first evaporator is configured to selectively provide cooling capacity to the refrigeration compartment alone or to both the refrigeration compartment and the temperature change compartment;

the second evaporator is configured to selectively provide refrigeration to the freezer compartment alone or to provide refrigeration to both the freezer compartment and the variable temperature compartment.

Optionally, the air path system comprises a first air supply device and a second air supply device;

the first air supply device is configured to selectively and independently supply the cooling air flow subjected to heat exchange by the first evaporator to the refrigerating compartment or simultaneously supply the cooling air flow to the refrigerating compartment and the temperature changing compartment;

The second air supply device is configured to selectively supply the cooling air flow subjected to heat exchange by the second evaporator to the freezing compartment alone or to both the freezing compartment and the temperature changing compartment.

Optionally, the first air supply device includes:

The middle part of the volute is limited with a containing cavity, and a first air supply flow path and a second air supply flow path which are communicated with the containing cavity are arranged around the circumference of the containing cavity;

a centrifugal fan rotatably disposed in the accommodating chamber; and

The driving motor is connected with the centrifugal fan and used for driving the centrifugal fan to rotate; wherein the method comprises the steps of

The first air supply flow path is directly communicated with the refrigerating compartment, and the second air supply flow path is directly communicated with the cooling space of the temperature changing compartment.

Optionally, an air volume control valve is disposed in the second air supply flow path, and the air volume control valve is configured to controllably adjust the flow of cooling air into the second air supply flow path.

Optionally, a first evaporator chamber is further defined in the box body, the first evaporator is arranged in the first evaporator chamber, and the first air supply device is arranged on the downstream side of the first evaporator;

The refrigeration compartment is located adjacently above the first evaporator chamber, and the temperature change compartment is located adjacently below the first evaporator chamber; and is also provided with

The heat exchange plate is horizontally arranged in the temperature changing compartment, so that a cooling space is formed above the heat exchange plate, and a temperature changing storage space is formed below the heat exchange plate.

Optionally, the first evaporator chamber and the cooling space are separated by a center sill; and is also provided with

And the front side of the middle beam is provided with an air return air duct penetrating up and down so that air flow in the cooling space returns to the first evaporator chamber, and a second air supply flow path of the first air supply device penetrates through the rear side of the middle beam from top to bottom and is directly communicated with the cooling space.

Optionally, a second evaporator chamber is further defined in the box body, and the second evaporator is arranged in the second evaporator chamber; and is also provided with

The second air supply device includes:

the refrigerating fan is arranged in the second evaporator chamber;

the air supply duct is communicated with the second evaporator chamber, the freezing compartment and the second evaporator chamber and the variable-temperature storage space; and

And the air supply air door is arranged in the air supply air duct and is configured to controllably block or conduct the communication between the second evaporator chamber and the variable-temperature storage space.

Optionally, the freezing compartment is located adjacently below the temperature change compartment, and the second evaporator compartment is located adjacently below the freezing compartment; and is also provided with

The air supply duct is formed at the rear side of the freezing compartment and the variable-temperature storage space.

Optionally, an internal circulation fan is further arranged in the variable-temperature storage space, and the internal circulation fan is used for promoting airflow in the variable-temperature storage space to circulate.

The refrigerating and freezing device of the invention is provided with a replacement hot plate in a temperature changing chamber, so that the temperature changing chamber is divided into a cooling space and a temperature changing storage space which are in thermal connection. The refrigerating and freezing device is also provided with a specially designed air path system, and the air path system not only can normally convey the cooling air flow subjected to heat exchange by the heat exchange system to the refrigerating room and the freezing room, but also can selectively convey the cooling air flow to the variable-temperature storage space and/or the cooling space. When the cooling air flow is conveyed to the variable-temperature storage space, the cold energy in the cooling air flow is distributed in the variable-temperature storage space, so that the temperature in the variable-temperature storage space can be reduced to be close to the freezing temperature of the freezing compartment; when the cooling air flow is conveyed to the cooling space, the cold energy contained in the cooling air flow is accumulated in the cooling space and is transferred to the variable-temperature storage space through the heat exchange plate between the cooling space and the variable-temperature storage space, and the cold energy transfer mode can ensure that the variable-temperature storage space obtains a certain cold energy so as to reduce the temperature in the variable-temperature storage space to be close to the refrigeration temperature of the refrigeration compartment, and the problems of uneven refrigeration, freezing of food materials and the like caused by direct blowing of the cooling air flow in a local area of the variable-temperature storage space are avoided, so that the uniform cooling of the variable-temperature storage space is realized, and the fresh-keeping effect is improved.

Furthermore, the first air supply device for conveying cooling air flow to the cooling spaces of the refrigerating compartment and the temperature-changing compartment is provided with the first air supply flow path and the second air supply flow path, and the two air supply flow paths are respectively and directly communicated with the refrigerating compartment and the cooling space, so that the cooling air flow can be directly conveyed to the refrigerating compartment and the cooling space without an air duct structure, the complicated air duct design is omitted, the assembly process is very simple, the operability is high, the cost is greatly reduced, and the extra space after the air duct structure is removed can be used for increasing the storage volume, and the volume ratio and the product competitiveness of the refrigerating and freezing device are improved.

The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

FIGS. 1 and 2 are schematic block diagrams of a refrigeration and freezer according to one embodiment of the invention in different orientations, respectively;

Fig. 3 is a schematic structural view of a first air supply device according to an embodiment of the present invention.

Detailed Description

The present invention provides a refrigerating and freezing device, and fig. 1 and 2 are schematic structural diagrams of the refrigerating and freezing device in different orientations according to one embodiment of the present invention. Referring to fig. 1 and 2, the refrigerating and freezing apparatus 1 of the present invention includes a cabinet 10, a heat exchange system, and an air path system.

The refrigerator body 10 is internally provided with a refrigerating compartment 11, a temperature changing compartment 12 and a freezing compartment 13 for storing articles, and the temperature changing compartment 12 is internally provided with a heat exchange plate 14 so as to divide the temperature changing compartment 12 into a cooling space 121 and a temperature changing storage space 122 which are in thermal connection through the heat exchange plate. That is, the cooling space 121 and the temperature change storage space 122 are fluidly isolated, but heat/cold can be transferred through the heat exchange plate 14.

The heat exchange system is configured to provide refrigeration to the refrigerated compartment 11, the variable temperature compartment 12, and the freezer compartment 13.

The air path system is configured to convey the cooling air flow after heat exchange by the heat exchange system to the refrigerating compartment 11 and the freezing compartment 13, and selectively convey the cooling air flow after heat exchange by the heat exchange system to the temperature change storage space 122 and/or to the cooling space 121 so that cooling energy is transferred to the temperature change storage space 122 through the heat exchange plate 14.

The refrigerating and freezing apparatus 1 of the present invention is provided with a heat exchange plate 14 in particular in the temperature change compartment 12 thereof, thereby dividing the temperature change compartment 12 into a cooling space 121 and a temperature change storage space 122 which are thermally connected. The refrigerating and freezing apparatus 1 further has a specially designed air path system capable of not only normally delivering the cooling air flow after heat exchange by the heat exchange system to the refrigerating compartment 11 and the freezing compartment 13, but also selectively delivering the cooling air flow to the temperature change storage space 122 and/or the cooling space 121. When the cooling air flow is conveyed to the variable-temperature storage space 122, the cooling capacity in the cooling air flow is distributed in the variable-temperature storage space 122 completely, so that the temperature in the variable-temperature storage space 122 can be reduced to be close to the freezing temperature of the freezing compartment; when the cooling air flow is conveyed to the cooling space 121, the cold energy contained in the cooling air flow is accumulated in the cooling space 121 and is transferred to the variable-temperature storage space 122 through the heat exchange plate 14 between the cooling space 121 and the variable-temperature storage space 122, and the cold energy transfer mode can ensure that the variable-temperature storage space obtains a certain cold energy so as to reduce the temperature in the variable-temperature storage space to be close to the refrigerating temperature of the refrigerating compartment, and the problems of uneven refrigeration, freezing of food materials and the like caused by direct blowing of the cooling air flow in a local area of the variable-temperature storage space 122 are avoided, so that the uniform cooling of the variable-temperature storage space 122 is realized, and the fresh-keeping effect is improved.

Specifically, the heat exchange plate 14 may be a plate body with good heat conduction performance, for example, it may be a metal plate with good heat conduction performance.

In some embodiments, the temperature change compartment 12 has a refrigeration gear, a freezing gear, and a quick-freezing gear. When the variable temperature compartment 12 is provided in the refrigerating range, the freezing range and the quick-freezing range, respectively, the amount of cold demand thereof gradually increases.

Further, when the variable temperature compartment 12 is in the refrigeration position, the temperature in the variable temperature compartment 12 is close to the temperature of the refrigeration compartment 11, and less cold is required. At this time, the air path system controllably delivers only the cooling air flow to the cooling space 121, and the cooling capacity in the cooling space 121 is transferred to the temperature change storage space 122 through the heat exchange plate 14. The variable-temperature storage space 122 has limited cold energy obtained by the indirect cold transfer mode, can be kept near the refrigeration temperature, realizes the even cooling effect and improves the fresh-keeping effect in the refrigeration environment.

Further, when the variable temperature compartment 12 is in the freeze gear, the temperature in the variable temperature compartment 12 is close to the temperature of the freezing compartment 13, and more refrigeration is required. At this point, the air path system controllably delivers only cooling air flow to the temperature change storage space 122 to directly cool the temperature change storage space 122. At this time, the temperature-changing storage space 122 obtains a large amount of cooling capacity, and can be kept near the freezing temperature, thereby realizing the freezing function.

Further, when the variable temperature compartment 12 is in the quick-freeze gear, the variable temperature compartment 12 needs to quickly obtain more cold in a short time. At this time, the air path system controllably delivers the cooling air flow to both the cooling space 121 and the temperature change storage space 122. At this time, the temperature-changing storage space 122 not only can directly obtain more cold energy from the cooling air flow input into the temperature-changing storage space, but also can obtain a certain amount of cold energy from the cooling space 121, so that the speed of obtaining the cold energy is increased, the freezing speed is increased, and the quick-freezing function is realized.

In some embodiments, the heat exchange system includes a first evaporator 31 and a second evaporator 32. The first evaporator 31 is configured to selectively supply cold to the refrigerating compartment 11 alone or to supply cold to both the refrigerating compartment 11 and the temperature changing compartment 12. The second evaporator 32 is configured to selectively provide refrigeration to the freezer compartment 13 alone or to provide refrigeration to both the freezer compartment 13 and the variable temperature compartment 12.

That is, the present invention supplies cold to the refrigerating compartment 11 and the freezing compartment 13 through the two evaporators, respectively, and thus, the refrigerating compartment 11 and the freezing compartment 13 are not affected by each other. And one of the two evaporators is used for refrigerating the temperature-changing chamber 12 or simultaneously refrigerating the temperature-changing chamber 12, so that various different cooling capacity requirements of the temperature-changing chamber 12 are met.

Specifically, since the refrigeration capacity requirement of the refrigerating compartment 13 is greater than that of the refrigerating compartment 11, the refrigerating capacity of the first evaporator 31 is preferably smaller than that of the second evaporator 32, so that the evaporators are configured as needed, saving energy consumption of the refrigerating and freezing apparatus 1 and reducing the occupied space of the evaporators.

Further, when the temperature changing compartment 12 is in the refrigerating position, the first evaporator 31 with smaller refrigerating capacity can be used alone to provide cooling capacity for the temperature changing compartment 12, i.e. the cooling air flow after heat exchange by the first evaporator 32 is delivered to the cooling space 121.

Further, when the temperature changing compartment 12 is in the freezing range, the second evaporator 32 with larger refrigerating capacity can be used alone to provide cooling capacity for the temperature changing compartment 12, i.e. the cooling air flow through the second evaporator 32 is input into the temperature changing storage space 122.

Further, when the temperature changing compartment 12 is in the quick-freezing gear, the first evaporator 31 and the second evaporator 32 can be utilized to provide cooling capacity for the temperature changing compartment 12, i.e. the cooling air flow after heat exchange by the first evaporator 32 is delivered to the cooling space 121, and meanwhile, the cooling air flow through the second evaporator 32 is input to the temperature changing storage space 122.

In some embodiments, the air path system includes a first air supply device 21 and a second air supply device 22. The first air blowing device 21 is configured to selectively send the cooling air flow after heat exchange by the first evaporator 31 to the refrigerating compartment 11 alone or to both the refrigerating compartment 11 and the temperature changing compartment 12. The second air blower 22 is configured to selectively send the cooling air flow after heat exchange by the second evaporator 32 to the freezing compartment 13 alone or to both the freezing compartment 13 and the temperature changing compartment 12.

That is, the present invention delivers cooling air flows to the refrigerating compartment and the freezing compartment by the two air blowing devices, respectively, and thus the cooling air flows of the refrigerating compartment 11 and the freezing compartment 13 do not affect each other. And, one of the two air supply devices independently conveys cooling air flow for the temperature changing chamber 12 or simultaneously conveys cooling air flow for the temperature changing chamber 12, thereby meeting the requirements of various different cooling air flow rates of the temperature changing chamber 12.

Specifically, the first air supply device 21 is used in cooperation with the first evaporator 31, that is, the first air supply device 21 is used for driving the cooling air flow after heat exchange of the first evaporator 31 to flow; the second air supply device 22 is used in cooperation with the second evaporator 32, that is, the second air supply device 22 is used for driving the cooling air flow after heat exchange of the second evaporator 32 to flow.

Fig. 3 is a schematic structural view of a first air supply device according to an embodiment of the present invention. In some embodiments, the first air supply device 21 includes a volute 211, a centrifugal fan 212, and a drive motor 213. A housing chamber 2111 is defined in the middle of the scroll 211, and a first air supply passage 2112 and a second air supply passage 2113 communicating with the housing chamber 2111 are provided around the circumference of the housing chamber 2111. To create an airflow within the receiving chamber 2111 by rotation of the centrifugal fan 212 and to urge the airflow to flow toward the first and second air supply flow paths 2112 and 2113. After the airflow flows out of the volute 211, a negative pressure environment is formed in the volute 211, and under the action of negative pressure, external airflow enters the accommodating cavity 2111 through an airflow inlet formed in the volute 211 and flows into the centrifugal fan 212. A driving motor 213 is connected to the centrifugal fan 212 for driving the centrifugal fan 212 to rotate.

Further, the first air supply flow path 2112 communicates directly with the refrigerating compartment 11 to directly deliver a cooling air flow to the refrigerating compartment 11 through the first air supply flow path 2112; the second air flow passage 2113 is in direct communication with the cooling space 121 of the temperature change compartment 12 to directly deliver a cooling air flow to the cooling space 121 through the second air flow passage 2113. Therefore, the cooling air flow can be directly conveyed to the refrigerating compartment 11 and the cooling space 121 without the air duct structure, so that the complicated air duct design is omitted, the assembly process is very simple, the operability is high, the cost is greatly reduced, the extra space after the air duct structure is removed can be used for increasing the storage volume, and the volume rate and the product competitiveness of the refrigerating and freezing device 1 are improved.

In some embodiments, an air flow control valve 214 is provided in the second air flow path 2113, the air flow control valve 214 being configured to controllably regulate the amount of cooling air flow into the second air flow path 2113. Thus, the rotational speed of centrifugal fan 212 may be determined based on the set temperature of refrigerated compartment 11 to ensure that refrigerated compartment 11 receives sufficient cooling to maintain a low temperature therein. The amount of cooling air flow into the cooling space 121 can be regulated by the air flow control valve 214, allowing the variable temperature storage space 122 of the variable temperature compartment 12 to achieve an adjustable temperature range.

In some embodiments, an air volume control valve 214 is disposed at an air flow inlet of the second air supply flow path 2113 that is connected to the receiving cavity 2111 to adjust an area of flow passing at the air flow inlet of the second air supply flow path 2113, thereby adjusting a flow of cooling air of the second air supply flow path 2113. The air volume control valve 214 provided at the air flow inlet of the second air flow path 2113 may restrict the amount of air flow entering the second air flow path 2113 at the most upstream side of the second air flow path 2113, so that other air flows that are not required for the second air flow path 2113 continue to flow in the accommodating chamber 2111, and thus flow to the first air flow path 2112 that requires more air flow. In addition, the other air flows which are not required for the second air supply passage 2113 continue to flow in the accommodating chamber 2111, and the flow direction and the flow trend thereof are not substantially changed, so that the air flow resistance is small, and the air flow speed is ensured.

It can be appreciated that if the air volume control valve 214 is disposed at a section of the second air supply flow path 2113 downstream of the air inlet thereof, when the air flow flowing into the second air supply flow path 2113 passes through the air volume control valve 214, a part of the air flow continues to flow along the second air supply flow path 2113, and another part of the air flow returns to the accommodating chamber 2111 under the blocking of the air volume control valve 214, so that the reverse phenomenon of the air flow direction is not generated, the air flow direction is disordered, and the conveying of cold energy is not facilitated. The present invention can effectively solve the above-described problems by providing the air volume control valve 214 at the air flow inlet of the second air supply passage 2113.

In some embodiments, the air volume control valve 214 is configured as an airflow baffle that controllably slides along the cavity wall of the receiving cavity 2111 to adjust the flow area at the airflow inlet of the first supply air flow path 2112 by the sliding of the airflow baffle. That is, the airflow baffle may slide back and forth along the chamber wall of the accommodating chamber 2111 so as to be selectively protruded toward the airflow inlet of the second air supply flow path 2113 or retracted from the airflow inlet of the second air supply flow path 2113. When the air flow inlet of the second air supply flow path 2113 of the air flow baffle extends, at least part of the flow passing area of the air flow inlet is shielded, and the size of the flow passing area of the air flow inlet shielded can be adjusted by adjusting the extending distance of the air flow baffle.

Because the airflow baffle slides along the cavity wall of the accommodation cavity 2111, which corresponds to the airflow baffle being in contact with or adjacent to the cavity wall of the accommodation cavity 2111, no resistance is exerted on the airflow within the accommodation cavity 2111, or even no influence is exerted on the airflow, regardless of whether the airflow baffle is in the extended or retracted state.

In some embodiments, the case 10 further defines a first evaporator chamber 151 therein, the first evaporator 31 is disposed in the first evaporator chamber 151, and the first air blowing device 21 is disposed on a downstream side of the first evaporator 31. The refrigerating compartment 11 is located adjacently above the first evaporator compartment 151, and the temperature changing compartment 12 is located adjacently below the first evaporator compartment 151. That is, the first evaporator chamber 151 is disposed between the refrigerating compartment 11 and the temperature changing compartment 12, and does not occupy the space on the rear side of the refrigerating compartment 11, so that the depth of the refrigerating compartment 11 can be increased and the capacity of the refrigerating compartment 11 can be increased.

Due to the principle of sinking of the cooling capacity, the cooling capacity in the cooling space 121 and the cooling capacity transferred from the heat exchange plate 14 into the temperature change storage space 122 are naturally sinking. In accordance with this phenomenon, in some embodiments, the present invention horizontally disposes the heat exchange plate 14 within the temperature change compartment 12 to form a cooling space 121 above the heat exchange plate 14 and a temperature change storage space 122 below the heat exchange plate 14. Therefore, the cold in the cooling space 121 is sunk and accumulated above the heat exchange plate 14, on one hand, the cold can be accumulated as much as possible more effectively and transferred to the variable-temperature storage space 122 through the heat exchange plate 14, and the refrigeration efficiency of the variable-temperature storage space 122 is improved; on the other hand, the heat exchange plate 14 can be ensured to be even in cold quantity distribution in the horizontal direction, so that the cold quantity can be transferred to the variable-temperature storage space 122 more evenly, the cold quantity can be received evenly in each area in the variable-temperature storage space 122 in the horizontal direction, and the even cooling effect in the horizontal direction is realized. And, the cold energy is transferred from the heat exchange plate 14 into the top of the variable-temperature storage space 122 and naturally sinks, and even if an internal circulation fan does not exist, the uniform cooling effect in the vertical direction of the variable-temperature storage space 122 can be realized within a certain time.

In addition, the first evaporator chamber 151 is formed between the refrigerating compartment 11 and the temperature changing compartment 12, and the cooling space 121 is located above the temperature changing storage space 122, so that the distance between the cooling space 121 and the first evaporator chamber 151 is relatively short, the conveying of the cooling air flow and the flowing of the return air flow are facilitated, the length of the second air supply flow path 2113 is facilitated to be shortened, and the air path structure of the refrigerating and freezing device 1 is simplified.

In some embodiments, first evaporator chamber 151 and cooling space 121 are separated by center sill 16. The front side of the middle beam 16 is provided with a return air duct 161 penetrating up and down to enable the air flow in the cooling space 121 to return to the first evaporator chamber 151, and the second air supply flow path 2113 of the first air supply device 21 penetrates through the rear side of the middle beam 16 from top to bottom and is directly communicated with the cooling space 121 so as to enable the cooling air flow driven by the first air supply device 21 to flow into the cooling space 121.

Since the cooling space 121 is separated from the first evaporator chamber 151 by the middle beam 16, and the cooling space 121 and the first evaporator chamber 151 need to be circulated, the middle beam 16 is provided with the return air duct 161, and the second air supply flow path 2113 passes through the middle beam 16, so that the air path structure and the assembly process can be simplified to the greatest extent.

It can be appreciated that the heat exchange plate 14 is only adjacent to a portion of the edge of the temperature change storage space 122, so that the cold energy transferred from the heat exchange plate 14 is firstly distributed at the portion of the edge of the temperature change storage space 122, and the cold energy cannot be obtained in a short time in a region further away from the portion of the edge. For this reason, in some embodiments, the variable-temperature storage space 122 is further provided with an internal circulation fan 40, and the internal circulation fan 40 is used for promoting the air in the variable-temperature storage space 122 to circulate, so that the cooling capacity introduced into the variable-temperature storage space 122 through the heat exchange plate 14 is more uniformly distributed in the variable-temperature storage space 122 along with the circulating airflow, and the cooling effect in the variable-temperature storage space 122 is further improved.

In some embodiments, the internal circulation fan 40 is disposed at the top of the rear side of the temperature change storage space 122 and configured to blow forward. The bottom of the front side of the temperature-changing storage space 122 is provided with an internal circulation air return port which is communicated with the internal circulation fan 40 through internal circulation air channels positioned at the bottom and the rear side of the temperature-changing storage space 122. Therefore, when the internal circulation fan 40 operates, parallel flow can be formed in the variable-temperature storage space 122, and the problem that water in the food is easy to run off due to direct blowing of the food by the internal circulation airflow is avoided.

Specifically, the internal circulation fan 40 may be a small axial flow fan, which has a simple structure and occupies a small space.

In some embodiments, a second evaporator chamber 152 is also defined within the housing 10, and the second evaporator 32 is disposed within the second evaporator chamber 152. And, the second air supply device 22 may include a freezing fan 221, an air supply duct 222, and an air supply damper 223.

A cooling fan 221 is disposed within the second evaporator chamber 152 for driving the air flow through the second evaporator 32 to produce a cooling air flow. The air supply duct 222 communicates the second evaporator chamber 152 and the freezer compartment 13, and the second evaporator chamber 152 and the temperature change storage space 122.

Specifically, the second evaporator chamber 152 and the freezer compartment 13 may be in communication via a partial section of the supply air duct 222, and the second evaporator chamber 152 and the temperature change storage space 122 are in communication via the entire supply air duct 222 to allow the cooling air flow within the second evaporator chamber 152 to flow into the freezer compartment 13 and the temperature change storage space 122. A supply air damper 223 is disposed within the supply air duct 222 and is configured to controllably block or conduct communication between the second evaporator chamber 152 and the variable temperature storage space 122.

Specifically, when the temperature change compartment 12 is set to the refrigeration position, the temperature change storage space 122 does not require the second evaporator 32 to provide cooling, and at this time, the supply air door 223 may be controlled to block communication between the second evaporator chamber 152 and the temperature change storage space 122, thereby preventing cooling air from flowing into the temperature change storage space 122 through the supply air duct 222. When the temperature changing compartment 12 is set to the freezing range and the quick freezing range, the temperature changing storage space 122 needs the second evaporator 32 to provide cold energy, and at this time, the air supply door 223 can be controlled to switch to a state of conducting the second evaporator 152 and the temperature changing storage space 122, so as to allow the cooling air flow after heat exchange by the second evaporator 32 to flow into the temperature changing storage space 122 through the air supply duct 222.

In some embodiments, the freezer compartment 13 is located adjacent below the variable temperature compartment 12 and the second evaporator chamber 152 is located adjacent below the freezer compartment 13. That is, the second evaporator 32 accommodated in the second evaporator chamber 152 is bottomed below the freezing compartment 13, does not occupy the rear side space of the freezing compartment 13, increases the depth of the freezing compartment 13, and increases the effective volume of the freezing compartment 13.

Further, an air supply duct 222 may be formed at the rear sides of the freezer compartment 13 and the variable temperature storage space 122 to supply air to the rear sides of the freezer compartment 13 and the variable temperature storage space 122.

In some embodiments, the air outlets of the refrigerating compartment 11 and the freezing compartment 13 are formed at the top of the rear side of the refrigerating compartment 11 and the freezing compartment 13, and the air outlets of the refrigerating compartment 11 and the freezing compartment 13 are formed at the bottom of the front side of the refrigerating compartment 11 and the freezing compartment 13, so as to form parallel flows in the refrigerating compartment 11 and the freezing compartment 13 respectively, and avoid the problem that the cooling air flow directly blows the food materials to affect the storage quality of the food materials.

It should be understood by those skilled in the art that the above-described embodiments are only a part of embodiments of the present invention, and not all embodiments of the present invention, and the part of embodiments is intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present invention, shall still fall within the scope of protection of the present invention.

It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A refrigeration and freezer comprising:

2. A refrigerating and freezing apparatus according to claim 1, wherein,

The temperature-changing compartment is provided with a refrigeration gear, a freezing gear and a quick-freezing gear which are gradually increased in cold energy demand,

3. A refrigerating and freezing apparatus according to claim 1, wherein,

The heat exchange system comprises a first evaporator and a second evaporator;

4. A refrigerating and freezing apparatus according to claim 3, wherein,

The air path system comprises a first air supply device and a second air supply device;

5. A refrigerating and freezing apparatus as recited in claim 4, wherein,

The first air supply device includes:

a centrifugal fan rotatably disposed in the accommodating chamber; and

6. A refrigerating and freezing apparatus according to claim 5, wherein,

An air volume control valve is provided in the second air supply flow path, and is configured to controllably adjust the flow of cooling air into the second air supply flow path.

7. A refrigerating and freezing apparatus according to claim 5, wherein,

A first evaporator chamber is further defined in the box body, the first evaporator is arranged in the first evaporator chamber, and the first air supply device is arranged on the downstream side of the first evaporator;

8. A refrigerating and freezing apparatus as recited in claim 7, wherein,

The first evaporator chamber and the cooling space are separated by a center sill; and is also provided with

9. A refrigerating and freezing apparatus as recited in claim 4, wherein,

A second evaporator chamber is also defined in the box body, and the second evaporator is arranged in the second evaporator chamber; and is also provided with

The second air supply device includes:

the refrigerating fan is arranged in the second evaporator chamber;

10. A refrigerating and freezing apparatus as recited in claim 9, wherein,

The freezing compartment is adjacently located below the temperature changing compartment, and the second evaporator compartment is adjacently located below the freezing compartment; and is also provided with

11. A refrigerating and freezing apparatus according to claim 1, wherein,

An internal circulating fan is further arranged in the variable-temperature storage space and used for promoting airflow in the variable-temperature storage space to circularly flow.