Refrigerator

Abstract

The invention relates to the technical field of refrigeration, and discloses a refrigerator which comprises a refrigerating system, a refrigerating system, a refrigerating system, a refrigerating system, a refrigerating system, a refrigerating system, a refrigerating system, a refrigerating system, a refrigerating system and a refrigerating system, and the refrigerating system adopts a mixed refrigerant which comprises one of R600a and R600 and R290; the refrigeration space is divided into a cryogenic space and a variable-temperature space by the heat preservation partition plate; the heat preservation partition plate can move between a first position enabling the volume of the cryogenic space to be the first volume and a second position enabling the volume of the cryogenic space to be the second volume, and the first volume is larger than the second volume; the first air door group corresponds to the first position of the heat preservation partition plate, the mixed refrigerant is in a first proportion, and the refrigerator assists in air supply and return; and when the second air door set corresponds to the heat preservation partition plate at the second position and the mixed refrigerant is in the second proportion, the refrigerator supplies and returns air in an auxiliary mode. The volume of the refrigeration chamber is adjusted by arranging the movable heat preservation partition plate, and the temperature of the cryogenic space is controlled when the volume is changed through cooperation of the mixed refrigerant and the air door set, so that the requirement of a user for the variable volume of the cryogenic space is met.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to a refrigerator. Background Art

[0002] As people's living standards improve, users have higher and higher requirements for the quality of frozen food preservation. For freezers, the requirements for adjustable freezing volume and freezing depth are also constantly increasing. Users require that the deep freezing temperature and deep freezing volume be adjustable.

[0003] However, in order to ensure the cryogenic temperature, the existing refrigerator sets the cryogenic volume to a fixed volume, which does not meet the user's demand for the cryogenic space volume and temperature to be adjustable at the same time.

[0004] Therefore, how to ensure the cryogenic temperature while satisfying the requirement of adjustable cryogenic space volume is a problem to be solved urgently in the art.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiment provides a refrigerator to solve the problem of ensuring the cryogenic temperature while satisfying the requirement of adjustable cryogenic space volume.

[0008] According to the first embodiment of the present invention, a refrigerator is provided, comprising: a refrigeration system, using a mixed refrigerant, the mixed refrigerant comprising one of R600a, R600 and R290; a thermal insulation partition, which divides the refrigeration space of the refrigerator into a deep cold space and a variable temperature space; the thermal insulation partition can move between a first position in which the volume of the deep cold space is a first volume and a second position in which the volume of the deep cold space is a second volume, wherein the first volume is greater than the second volume; a damper group, which is arranged on the inner wall of the refrigeration space of the refrigerator, and the damper group is adapted to the thermal insulation partition to meet the supply and return air of the refrigeration space of the refrigerator when the thermal insulation partition is in the first position or the second position; and, when the volume of the deep cold space is the first volume, the mixed refrigerant is adjusted to a first ratio; when the volume of the deep cold space is the second volume, the mixed refrigerant is adjusted to a second ratio.

[0009] In some embodiments, the damper group includes a first damper group and a second damper group. The first damper group includes: an auxiliary air supply damper, which is adjacent to the first position and is arranged on the side wall of the inner liner at the top of the cryogenic space; a first auxiliary return air damper, which is adjacent to the first position and is arranged on the side wall of the inner liner at the bottom of the variable temperature space; the second damper group includes: a second auxiliary return air damper, which is adjacent to the second position and is arranged on the side wall of the inner liner at the bottom of the variable temperature space.

[0010] In some embodiments, the refrigerator further includes: a first air supply damper group, which is arranged on the upper side wall of the temperature variable space; and a second air supply damper group, which is arranged on the upper side wall of the deep cold space and is located below the second position.

[0011] In some embodiments, the relationship between the mass ratio of R290 in the mixed refrigerant and the volume of the cryogenic space includes: W = 1-[k1*V 2 -k2*V+k3]; where W is the mass percentage of R290; V is the volume of the deep cold space; the value range of k1 is 0.000007 to 0.000009; the value range of k2 is 0.003 to 0.004; when the mixed refrigerant is a mixture of R600 and R290, the corresponding value range of k3 is 0.9 to 1; when the mixed refrigerant is a mixture of R600a and R290, the corresponding value range of k3 is 1 to 1.1.

[0012] In some embodiments, the refrigerator further includes: a refrigerant regulating device, including multiple refrigerant storage devices, each of which is independently connected to the refrigeration system and is equipped with a valve, through which the refrigerant in the refrigerant storage device is transported to the refrigeration system or the refrigerant in the refrigeration system is extracted into the refrigerant storage device to adjust the ratio of the mixed refrigerant in the refrigeration system.

[0013] In some embodiments, the refrigerator is provided with slideways on the inner walls on both sides opposite to each other at the first position and the second position; matching slideways are provided at both ends of the thermal insulation partition corresponding to the slideways, so that the thermal insulation partition can be slidably and sealedly installed in the refrigerator.

[0014] In some embodiments, the refrigerator also includes: an evaporator, which is arranged in a compressor compartment at the bottom of the deep cold space; an air duct, which connects the evaporator and each air door; and an evaporating fan, which is arranged between the evaporator and the air duct, and is used to transport the cold energy of the evaporator to the air duct.

[0015] In some embodiments, the refrigerator further includes: a magnetic switch that controls the switch status of each damper.

[0016] In some embodiments, the temperature of the cryogenic space can be adjusted in the range of -28°C to 40°C.

[0017] In some embodiments, the refrigeration system includes a compressor, which includes: a motor; a crankshaft; and a cylinder, wherein the crankshaft connects the motor and the cylinder; wherein the crankshaft includes a diversion channel and a mainstream channel, wherein the mainstream channel has a three-stage stepped structure, and the crankshaft includes a distribution angle less than or equal to 60°.

[0018] In some embodiments, the compressor further includes: an intake valve plate, the thickness of which is greater than or equal to 0.17 mm; and / or a cylinder head gasket, the cylinder head gasket being made of a mixed material of metal and nylon.

[0019] In some embodiments, the refrigeration space also includes a variable temperature space, and the temperature adjustment range of the variable temperature space is 8 to 26° C., and the temperature range covers refrigeration function, ice temperature, and freezing function.

[0020] In some embodiments, the temperature-changing space is located above the cryogenic space. It is understood that the temperature-changing space is located below the cryogenic space, or the temperature-changing space and the cryogenic space are arranged in the left-right direction.

[0021] In some embodiments, the freezer includes an insulation partition and an air duct baffle. The insulation partition divides the refrigeration space of the freezer into a deep cold space and a variable temperature space; the insulation partition can move between the deep cold space and the variable temperature space to change the volume of the deep cold space; the air duct baffle can be movably arranged at the air supply port of the deep cold space to adjust the air volume of the deep cold space by adjusting the size of the air supply port area; the relationship between the air supply volume of the deep cold space and the air supply area and the volume of the deep cold space includes: V = b1X-b2; F = a1X-a2; V is the volume of the deep cold space, in L; X is the air supply volume of the deep cold space, in L / min; F is the air supply area of ​​the air supply port, in mm 2 ; a1, a2, b1 and b2 are all constants greater than zero.

[0022] In some embodiments, the value range of a1 is 612.15 to 620.85; the value range of a2 is 8.9218 to 9.1325.

[0023] In some embodiments, the refrigerator further comprises an air door rotatably disposed at the air supply port, and the air door can rotate relative to the air supply port between an open position for rotating to open the air supply port and a closed position for blocking the air supply port.

[0024] In some embodiments, the refrigerator further includes a guide column handle and an air duct cover, the guide column handle is connected to the air duct baffle; the air duct cover is covered on the refrigerator air duct, and the air duct cover is provided with an air duct opening and a guide groove; the air duct baffle is correspondingly arranged at the air duct opening, and the guide column handle is correspondingly arranged at the guide groove, and the guide column handle 27 moves along the guide groove 32 to drive the air duct baffle to move so as to adjust the area of ​​the air duct opening blocked by the air duct baffle.

[0025] The refrigerator provided in the embodiments of the present disclosure can achieve the following technical effects:

[0026] The volume of the refrigeration chamber can be adjusted by setting a movable insulation partition. The temperature of the cryogenic space can be controlled when the volume changes by using the combination of mixed refrigerant and damper group to meet the user's demand for variable volume of the cryogenic space.

[0027] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0029] Figure 1 is a schematic cross-sectional structural diagram of a refrigerator provided by an embodiment of the present disclosure;

[0030] Figure 2 is a schematic cross-sectional structural diagram of a refrigerator provided by another embodiment of the present disclosure;

[0031] Figure 3 is a schematic diagram of a partial structure of a refrigerator provided by an embodiment of the present disclosure;

[0032] Figure 4 is a schematic diagram of the structure of an air duct baffle provided by an embodiment of the present disclosure;

[0033] Figure 5 is a schematic diagram of a partial structure of a refrigerator provided by another embodiment of the present disclosure;

[0034] Figure 6 is a schematic diagram of the structure of a refrigeration system provided by an embodiment of the present disclosure;

[0035] Figure 7 is a schematic structural diagram of a cylinder head gasket of a compressor of a refrigeration system provided by an embodiment of the present disclosure;

[0036] Figure 8 It is a partial cross-sectional view of a compressor crankshaft of a refrigeration system provided by an embodiment of the present disclosure.

[0037] Reference numerals:

[0038] 1: Refrigeration system;

[0039] 10: compressor; 11: crankshaft; 111: bypass channel; 112: main channel; 12: cylinder head gasket;

[0040] 20: Freezer; 21: Insulation partition; 22: Deep cold space; 23: Variable temperature space; 24: Air duct baffle; 25: Air door; 26: Air outlet; 27: Guide column handle;

[0041] 30: air duct cover; 31: air duct opening; 32: guide groove; 33: first air door group; 34: second air door group; 35: auxiliary air supply air door; 36: first auxiliary return air door; 37: second auxiliary return air door; 38: first air supply air door group; 39: second air supply air door group;

[0042] 40: slideway; 41: matching slideway; 42: evaporator; 43: air duct; 44: evaporation fan; 45: magnetic switch;

[0043] 50: first position; 51: second position. DETAILED DESCRIPTION

[0044] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0045] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0046] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0047] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0048] Unless otherwise stated, the term "plurality" means two or more.

[0049] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0050] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0051] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0052] As people's living standards improve, users have higher and higher requirements for the quality of frozen food preservation. For freezers, the requirements for adjustable freezing volume and freezing depth are also constantly increasing. Users require that the deep freezing temperature and deep freezing volume be adjustable.

[0053] However, in order to ensure the cryogenic temperature, the existing refrigerator sets the cryogenic volume to a fixed volume, which does not meet the user's demand for the cryogenic space volume and temperature to be adjustable at the same time.

[0054] Therefore, how to ensure the cryogenic temperature while satisfying the requirement of adjustable cryogenic space volume is a problem to be solved urgently in the art.

[0055] Combination Figure 1 , Figure 3 and Figure 4As shown, the embodiment of the present disclosure provides a refrigerator 20, including a refrigeration system 1, a heat preservation partition 21 and a damper group. The refrigeration system 1 uses a mixed refrigerant, and the mixed refrigerant includes R600a, one of R600 and R290; the heat preservation partition 21 divides the refrigeration space of the refrigerator 20 into a deep cold space 22 and a variable temperature space 23; the heat preservation partition 21 can move between a first position 50 in which the volume of the deep cold space 22 is a first volume and a second position 51 in which the volume of the deep cold space 22 is a second volume, wherein the first volume is greater than the second volume; the damper group is arranged on the inner wall of the refrigeration space of the refrigerator, and the damper group is adapted to the heat preservation partition to meet the supply and return air of the refrigeration space of the refrigerator when the heat preservation partition is in the first position or the second position; and when the volume of the deep cold space 22 is the first volume, the mixed refrigerant is adjusted to the first ratio; when the volume of the deep cold space 22 is the second volume, the mixed refrigerant is adjusted to the second ratio.

[0056] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the freezer 20 uses a mixed refrigerant, and the cold is transported to the first damper group 33 and the second damper group 34 through the evaporating fan 44. The heat-insulating partition 21 can move in the vertical direction to adjust the volume of the deep cold space 22 located below, so that the volume of the deep cold space 22 can be adjusted. The heat-insulating partition 21 moves upward, the volume of the deep cold space 22 increases, and the volume of the variable temperature space 23 located above decreases. The deep cold space 22 and the variable temperature space 23 each use an independent refrigeration system 1, and the deep cold space 22 uses a mixed refrigerant. The heat-insulating partition 21 is located at the first position 50, and the volume of the deep cold space 22 increases. The first damper group 33 corresponds to the deep cold space 22, and assists in returning air to the deep cold space 22; at this time, in order to ensure the temperature and cooling speed of the deep cold space 22, the mixed refrigerant is adjusted to the first ratio to meet the cooling speed and temperature. The insulation partition 21 is located at the second position 51, the volume of the cryogenic space 22 is reduced, and the second air door group 34 corresponds to the cryogenic space 22 to assist in returning air to the cryogenic space 22; the mixed refrigerant is adjusted to the first ratio to save energy to the maximum extent while meeting the refrigeration temperature and refrigeration speed of the cryogenic space 22.

[0057] Optionally, the damper group includes a first damper group and a second damper group. The first damper group 33 includes: an auxiliary air supply damper 35, which is adjacent to the first position 50 and is arranged on the top inner liner side wall of the deep cold space 22; a first auxiliary return air damper 36, which is adjacent to the first position 50 and is arranged on the bottom inner liner side wall of the variable temperature space 23; and the second damper group 34 includes: a second auxiliary return air damper 37, which is adjacent to the second position 51 and is arranged on the bottom inner liner side wall of the variable temperature space 23.

[0058] like Figure 1As shown, the heat preservation partition 21 is installed at the first position 50, and the auxiliary air supply damper 35 is located below the heat preservation partition 21 and adjacent to the heat preservation partition 21, and is arranged on the side wall of the inner liner of the refrigerator 20, so that the cold air can be transported to the deep cold space 22 through the auxiliary air supply damper 35. The first auxiliary return air damper 36 is arranged at the bottom of the variable temperature space 23 above the heat preservation partition 21 at the first position 50. When the heat preservation partition 21 is installed at the first position 50, the volume of the variable temperature space 23 becomes smaller, and the return air port of the original variable temperature space 23 is separated by the heat preservation partition 21. At this time, the first auxiliary return air damper 36 is opened, so that the cold air in the variable temperature space 23 can be output at the first auxiliary return air damper 36 at the bottom of the variable temperature space 23, so that the cold air can fill the entire space of the variable temperature space 23. When the insulation partition 21 is located at the second position 51, the volume of the variable temperature space 23 expands downward. At this time, the second auxiliary return air damper 37 is located at the bottom of the variable temperature space 23, so that the cold air in the variable temperature space 23 can flow out when it reaches the second auxiliary return air damper 37, so that the cold air remains in the variable temperature space 23 and fills the variable temperature space 23 from top to bottom.

[0059] Optionally, the refrigerator 20 further includes: a first air supply damper group 38 , which is disposed on the upper side wall of the temperature-changing space 23 ; and a second air supply damper group 39 , which is disposed on the upper side wall of the deep-freezing space 22 and is located below the second position 51 .

[0060] like Figure 1 As shown, the first air supply damper group 38 is used to supply air to the variable temperature space 23, and is arranged on the upper side wall of the variable temperature space 23 so that cold air can be transported from the upper part into the variable temperature space 23; the second air supply damper group 39 is arranged in the deep cold space 22, and is located on the upper side wall of the deep cold space 22 below the second position 51. In this way, when the insulation partition 21 is installed in the second position 51, cold air is input into the upper part of the deep cold space 22 by the second air supply damper group 39, and flows downward to fill the entire deep cold space 22.

[0061] Optionally, the relationship between the mass ratio of R290 in the mixed refrigerant and the volume of the cryogenic space 22 includes:

[0062] W=1-[k1*V 2 -k2*V+k3] (1);

[0063] Among them, W is the mass proportion of R290; V is the volume of deep cold space 22; k1 and k2 are both constants, and the value range of k1 is 0.000007 to 0.000009; the value range of k2 is 0.003 to 0.004; when the mixed refrigerant is a mixture of R600 and R290, the corresponding value range of k3 is 0.9 to 1; when the mixed refrigerant is a mixture of R600a and R290, the corresponding value range of k3 is 1 to 1.1.

[0064] It should be noted that the unit of the volume V of the cryogenic space 22 in the above formula (1) is L, and only the value of the volume V when L is used as the unit is used in the calculation.

[0065] From the above formula (1), it can be seen that when the mixed refrigerant is composed of R600a and R290, the mass proportion of R600a is (k1*V 2 -k2*V+k3), which is a parabola opening upward.

[0066] In this way, as the volume V of the deep cold space 22 increases, the mass proportion of R600a first decreases and then increases, and the refrigeration proportion of R290 first increases and then decreases.

[0067] Compared with R600a, R290 is more helpful to achieve the low temperature of the deep cold space 22, and the larger the volume V of the deep cold space 22, the greater the cold capacity required by the deep cold space 22, so the mass proportion of R290 increases first. Since the exhaust pressure of the compressor 10 is large when the refrigeration system 1 adopts R290, therefore, as the mass proportion of R290 increases, the exhaust pressure required by the compressor 10 becomes larger and larger, which will cause the compressor 10 to fail to meet the needs, and when the mass proportion of R290 increases to a certain extent, adding R290 will not have much effect on reducing the temperature of the deep cold space 22. Therefore, the mass proportion of R290 will not be controlled to increase all the time. After increasing to a certain extent, the mass proportion of R290 is controlled to start to decrease, and finally it can meet the low temperature required by the deep cold space 22 and protect the compressor 10 to avoid damage to the compressor 10.

[0068] Table 1 below shows the relationship between the volume of the cryogenic space 22, the total volume of the refrigeration space, the mass proportion of R600, the mass proportion of R290, the cooling capacity W, the casing temperature of the compressor 10, the exhaust temperature of the compressor 10, the exhaust pressure of the compressor 10, the suction pressure of the compressor 10, the cooling depth of the cryogenic space 22, the cooling depth of the variable temperature space 23, power consumption and noise.

[0069] Table 1

[0070]

[0071]

[0072] It can be seen that when the volume of the refrigeration space is 150L, ​​the comprehensive indexes of power consumption, noise, and refrigeration depth of the deep refrigeration space 22 are optimal when the mass proportions of R600a and R290 are 70% and 30% respectively. This is consistent with the result calculated by the above formula (1).

[0073] When the volume of the refrigeration space is 198L, and the mass proportions of R600a and R290 are 65% and 35% respectively, the comprehensive indexes of power consumption, noise, and refrigeration depth of the deep refrigeration space 22 are optimal. This is consistent with the result calculated by the above formula (1).

[0074] Table 2 below shows the volume of the cryogenic space 22, the total volume of the refrigeration space, the mass proportion of R600, the mass proportion of R290, the cooling capacity W, the casing temperature of the compressor 10, the exhaust temperature of the compressor 10, the exhaust pressure of the compressor 10, the suction pressure of the compressor 10, the cooling depth of the cryogenic space 22, the cooling depth of the variable temperature space 23, the power consumption and the noise.

[0075] Table 2

[0076]

[0077] It can be seen that when the volume of the refrigeration space is 150L, ​​the comprehensive indexes of power consumption, noise, and refrigeration depth of the deep refrigeration space 22 are optimal when the mass proportions of R600 and R290 are 60% and 40% respectively. This is consistent with the result calculated by the above formula (1).

[0078] When the volume of the refrigeration space is 198L, and the mass proportions of R600 and R290 are 55% and 45% respectively, the comprehensive indexes of power consumption, noise, and refrigeration depth of the deep refrigeration space 22 are optimal. This is consistent with the result calculated by the above formula (1).

[0079] The mass proportion of various single-refrigerants (R600a, R600 or R290) in the mixed refrigerant affects the temperature pulling depth of the mixed refrigerant. The deep cold space 22 is the space with the lowest temperature required in the refrigeration space and the space with the largest cooling demand in the refrigeration space. Therefore, when designing the mass proportion of various single-refrigerants in the mixed refrigerant, the parameters of the deep cold space 22 are the most important considerations.

[0080] Among the parameters of the cryogenic space 22, when the required temperature of the cryogenic space 22 is determined, the volume V of the cryogenic space 22 determines the required cooling capacity of the cryogenic space 22. The cooling capacity required by the cryogenic space 22 can only be met when the mass proportion of various single working medium refrigerants in the mixed refrigerant meets the requirements. Therefore, the mass proportion of various single working medium refrigerants in the mixed refrigerant is affected by the volume V of the cryogenic space 22.

[0081] Optionally, the refrigerator also includes: a refrigerant regulating device, including multiple refrigerant storage devices, each of which is independently connected to the refrigeration system and is equipped with an independent valve. The refrigerant in the refrigerant storage device is transported to the refrigeration system or the refrigerant in the refrigeration system is extracted into the refrigerant storage device through the valve to adjust the ratio of the mixed refrigerant in the refrigeration system.

[0082] The refrigerant regulating device is provided with a filter device at the position corresponding to each valve, and the valve and the filter device cooperate to realize the circulation of the refrigerant in the refrigerant regulating device and the refrigeration system. Each refrigerant can be transported from the refrigerant storage to the refrigeration system or flow back from the refrigeration system to the refrigerant storage through the valve and the filter device.

[0083] Optionally, slideways 40 are provided on the inner walls of the refrigerator 20 on both sides opposite to each other at the first position 50 and the second position 51 ; matching slideways 41 are provided at the corresponding slideways 40 at both ends of the thermal insulation partition 21 , so that the thermal insulation partition 21 can be slidably and sealedly installed in the refrigerator 20 .

[0084] like Figure 1 and Figure 5 As shown, the slide 40 is arranged on the opposite side walls of the inner tank of the refrigerator 20, and the two side ends of the insulation partition 21 are provided with matching slides 41. The matching slides 41 cooperate with the slide 40 to realize the sliding of the insulation partition 21, and a sealing structure is provided at the matching position of the insulation partition 21 and the slide 40, so that the temperature variable space 23 above the insulation partition 21 and the deep cold space 22 below the insulation partition 21 are sealed and isolated.

[0085] Optionally, the cold cabinet 20 also includes: an evaporator 42, which is arranged in a compressor compartment at the bottom of the deep cold space 22; an air duct 43, which connects the evaporator 42 and each damper 25; and an evaporating fan 44, which is arranged between the evaporator 42 and the air duct 43, and is used to transport the cold energy of the evaporator 42 to the air duct 43.

[0086] like Figure 5 As shown, the evaporator 42 is arranged at the bottom of the deep cold space 22, the evaporating fan 44 is arranged corresponding to the evaporator 42, and the air outlet direction of the evaporating fan 44 corresponds to the air duct opening 31. The evaporating fan 44 blows the cold energy of the evaporator 42 to each air door 25 through the air duct 43 to provide cooling for each refrigeration compartment.

[0087] Optionally, the refrigerator 20 further includes: a magnetic switch 45 , which controls the switch state of each damper 25 .

[0088] like Figure 1 As shown, the magnetic switch 45 is connected to the damper 25 and the controller, and is controlled to open and close the damper 25 to cooperate with the installation of the thermal insulation partition 21.

[0089] Optionally, the temperature of the cryogenic space 22 can be adjusted within a range of -28°C to 40°C.

[0090] The cabinet defines a refrigeration space, which includes a deep freezing space 22 with a volume of V. The temperature adjustment range of the deep freezing space 22 is -28°C to 40°C, for example, -28°C, -35°C or -40°C, covering ordinary freezing and deep freezing functions to meet user needs.

[0091] Optionally, the refrigeration space also includes a variable temperature space 23, and the temperature adjustment range of the variable temperature space 23 is 8 to 26°C, and the temperature range covers refrigeration function, ice temperature, and freezing function.

[0092] like Figure 1 As shown, setting the variable temperature space 23 can enrich the refrigeration temperature range of the freezer 20. The combination of the variable temperature space 23 and the deep cold space 22 can realize various application scenarios such as refrigeration + freezing, ice temperature + freezing, ice temperature + deep cold, freezing + freezing, freezing + deep cold, etc., which can meet users' different functional requirements.

[0093] Optionally, the temperature-changing space 23 is located above the cryogenic space 22. It can be understood that the temperature-changing space 23 is located below the cryogenic space 22, or the temperature-changing space 23 and the cryogenic space 22 are arranged in the left-right direction.

[0094] Optionally, the refrigeration system 1 includes a compressor 10, which includes: a motor; a crankshaft 11; and a cylinder, wherein the crankshaft 11 connects the motor and the cylinder; wherein the crankshaft 11 includes a diversion channel 111 and a mainstream channel 112, wherein the mainstream channel 112 has a three-stage stepped structure, and the crankshaft 11 includes a distribution angle less than or equal to 60°.

[0095] like Figure 7 and Figure 8 As shown, specifically, the branch channel 111 of the crankshaft 11 is used to connect with the cylinder, one end of the main channel 112 is connected to the branch channel 111, and the other end of the main channel 112 has a distribution angle. The main channel 112 has a three-stage stepped structure, that is, the main channel 112 is at least a three-stage telescopic structure.

[0096] Combination Figure 8 As shown, optionally, the crankshaft 11 includes a distribution angle less than or equal to 60°. Specifically, the distance of the A portion of the crankshaft 11 is [60, 65] mm, the distance of the B portion is [40, 45] mm, the distance of the C portion is [38, 42] mm, the distance of the D portion is [20, 25] mm, and the distance of the E portion is [10, 16] mm, and the distribution angle F is less than or equal to 60°. More specifically, the distance of the A portion of the crankshaft 1111 is 63.5 mm, the distance of the B portion is 42.4 mm, the distance of the C portion is 41.4 mm, the distance of the D portion is 23.5 mm, and the distance of the E portion is 13.5 mm, and the distribution angle F is less than or equal to 60°.

[0097] In the related art, the parameters of the compressor 10 crankshaft 11 used in the conventional refrigeration system 1 using the single refrigerant R600a are: the distance of part A is 62mm, the distance of part B is 38mm, the distance of part C is 7mm, the distance of part D is 22mm, the distance of part E is 12mm, and the distribution angle F is equal to 120°.

[0098] Compared with the crankshaft 11 of the conventional compressor 10, the embodiment of the present disclosure Figure 2 The structural strength of the crankshaft 11 of the compressor 1010 shown in FIG. 1 is improved by at least 50%.

[0099] Alternatively, if Figure 7 As shown, the compressor 10 further includes: an intake valve plate, the thickness of which is greater than or equal to 0.17 mm; and / or a cylinder head gasket 12, which is made of a mixed material of metal and nylon.

[0100] In the related art, the thickness of the suction valve plate used in the compressor 10 of the refrigeration system 1 using the single refrigerant R600a is usually 0.15 mm. The embodiment of the present disclosure increases the thickness of the suction valve plate to greater than or equal to 0.17 mm, effectively improving the impact resistance and fatigue resistance of the suction valve plate. In the related art, the cylinder head gasket 12 used in the compressor 10 of the refrigeration system 1 using the single refrigerant R600a is usually made of nylon material. The cylinder head gasket 12 of the embodiment of the present disclosure is made of a mixed material of metal and nylon, which better meets the sealing performance and reliability of the cylinder head gasket 12 of the embodiment of the present disclosure under high exhaust pressure and high exhaust temperature.

[0101] Optionally, the refrigerator 20 includes a heat preservation partition 21 and an air duct baffle 24. The heat preservation partition 21 divides the refrigeration space of the refrigerator 20 into a deep cold space 22 and a variable temperature space 23; the heat preservation partition 21 can move between the deep cold space 22 and the variable temperature space 23 to change the volume of the deep cold space 22; the air duct baffle 24 can be movably arranged at the air supply port 26 of the deep cold space 22 to adjust the air volume of the deep cold space 22 by adjusting the size of the area of ​​the air supply port 26; the relationship between the air supply volume of the deep cold space 22 and the air supply area and the volume of the deep cold space includes: V = b1X-b2; F = a1X-a2; V is the volume of the deep cold space, in L; X is the air supply volume of the deep cold space 22, in L / min; F is the air supply area of ​​the air supply port 26, in mm 2 ; a1, a2, b1 and b2 are all constants greater than zero.

[0102] like Figure 2As shown, the heat preservation partition 21 divides the refrigerator 20 from top to bottom into a variable temperature space 23 located at the top and a deep cold space 22 located at the bottom. The heat preservation partition 21 can move in the vertical direction relative to the refrigerator 20. When the heat preservation partition 21 moves upward, the volume of the deep cold space 22 located at the bottom becomes larger. A plurality of air supply ports 26 are arranged below the heat preservation partition 21. The movable air duct baffle 24 blocks the plurality of air supply ports 26 at the same time. The movable air duct baffle 24 is arranged on the back of the air duct cover 30 and can move up and down relative to the air supply ports 26 to change the shielding area of ​​the air supply ports 26 to adjust the temperature of the deep cold space 22. The larger the area F of the air supply ports 26, the greater the air supply volume entering the deep cold space 22 per minute, and the temperature reduction speed of the deep cold space 22 will also be accelerated. When the volume of the cryogenic space is changed by adjusting the insulation partition, the required air supply volume is determined by the change in volume, and the air duct baffle is adjusted by the required air supply volume to determine the air supply port area to meet the air supply volume demand of the refrigeration space.

[0103] Optionally, the value range of a1 is 8.9 to 9.2; the value range of a2 is 612 to 621; the value range of b1 is 0.19 to 0.21; the value range of b2 is 0.5 to 0.7. V = b1X-b2; F = a1X-a2;

[0104] Table 3 below shows the relationship between the volume of the cryogenic space 22 , the air supply volume, and the air supply area of ​​the air supply port 26 .

[0105] Table 3

[0106]

[0107] It can be seen that as the air supply area increases, the air supply volume increases linearly, which is consistent with the result calculated by the above formula (1).

[0108] Optionally, the refrigerator 20 further includes a damper 25 rotatably disposed at the air supply port 26 , and the damper 25 can rotate relative to the air supply port 26 between an open position for opening the air supply port 26 and a closed position for blocking the air supply port 26 .

[0109] like Figure 1 As shown, in some embodiments, an air supply outlet 26 is opened on the upper inner wall of the deep cold space 22 below the heat-insulating partition 21, and the air supply outlet 26 is provided with a damper 25. One side end of the damper 25 is rotatably connected to the side wall of the air supply outlet 26 through a door shaft. The damper 25 can rotate around the door shaft relative to the air supply outlet 26 to adjust the area of ​​the air supply outlet 26 blocked by the damper 25 to adjust the air volume.

[0110] Optionally, the refrigerator 20 also includes a guide post handle 27 and an air duct cover 30, the guide post handle 27 is connected to the air duct baffle 24; the air duct cover 30 is covered on the air duct 43 of the refrigerator 20, and the air duct cover 30 is provided with an air duct opening 31 and a guide groove 32; the air duct baffle 24 is correspondingly arranged at the air duct opening 31, and the guide post handle 27 is correspondingly arranged at the guide groove 32, and the guide post handle 27 moves along the guide groove 32 to drive the air duct baffle 24 to move to adjust the area of ​​the air duct baffle 24 blocking the air duct opening 31.

[0111] Combine 2 to Figure 4 As shown, the air duct baffle 24 is provided with a guide column handle 27, and the air duct cover 30 is provided with a guide groove 32 adapted to the guide column handle 27, the guide groove 32 extends from top to bottom, the guide column handle 27 is integrated with the air duct baffle 24, the guide column handle 27 moves from top to bottom, and the air duct baffle 24 blocks the air supply outlet 26 from top to bottom. In the first preset position, the air duct baffle 24 blocks the area of ​​the air supply outlet 26, so that the area of ​​the air supply outlet 26 is the first volume; in the second preset position, the air duct baffle 24 blocks the air supply outlet 26 so that the air supply area of ​​the air supply outlet 26 is the second volume.

[0112] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0113] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0114] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0115] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A refrigerator, characterized in that: include: The refrigeration system uses a mixed refrigerant, which includes one of R600a, R600 and R290; A heat-insulating partition (21) is used to separate the refrigeration space of the refrigerator (20) into a deep-freezing space (22) and a variable-temperature space (23); The heat-insulating partition (21) is movable between a first position (50) in which the volume of the cryogenic space (22) is a first volume and a second position (51) in which the volume of the cryogenic space (22) is a second volume, wherein the first volume is greater than the second volume; An air door group is arranged on the inner wall of the refrigeration space of the refrigerator, and the air door group is adapted to the thermal insulation partition to meet the supply and return air of the refrigeration space of the refrigerator when the thermal insulation partition is in the first position or the second position; Furthermore, when the volume of the cryogenic space (22) is a first volume, the mixed refrigerant is adjusted to a first ratio; When the volume of the cryogenic space (22) is the second volume, the mixed refrigerant is adjusted to a second ratio.

2. The refrigerator according to claim 1, characterized in that: The damper group comprises a first damper group and a second damper group, wherein the first damper group (33) comprises: An auxiliary air supply damper (35) is disposed adjacent to the first position (50) on the side wall of the top inner tank of the cryogenic space (22); A first auxiliary return air damper (36) is disposed adjacent to the first position (50) on the side wall of the inner tank at the bottom of the temperature-changing space (23); The second damper assembly (34) comprises: The second auxiliary return air damper (37) is arranged adjacent to the second position (51) on the side wall of the inner tank at the bottom of the temperature-changing space (23).

3. The refrigerator according to claim 1, characterized in that: Also includes: A first air supply damper group (38) is arranged on the upper side wall of the temperature variable space (23); The second air supply damper group (39) is arranged on the upper side wall of the deep cold space (22) and is located below the second position (51).

4. The refrigerator according to claim 1, characterized in that: The relationship between the mass proportion of R290 in the mixed refrigerant and the volume of the cryogenic space (22) includes: W=1-[k1*V 2 -k2*V+k3]; Wherein, W is the mass proportion of R290; V is the volume of the cryogenic space (22); The value range of k1 is 0.000007 to 0.000009; The value range of k2 is 0.003 to 0.004; When the mixed refrigerant is a mixture of R600 and R290, the corresponding k3 value range is 0.9 to 1; When the mixed refrigerant is a mixture of R600a and R290, the corresponding value range of k3 is 1 to 1.

1.

5. The refrigerator according to claim 1, characterized in that: Also includes: The refrigerant regulating device includes a plurality of refrigerant storage devices, each of which is independently connected to the refrigeration system and is equipped with a valve. The refrigerant in the refrigerant storage device is transported to the refrigeration system or the refrigerant in the refrigeration system is extracted into the refrigerant storage device through the valve to adjust the ratio of the mixed refrigerant in the refrigeration system.

6. The refrigerator according to claim 1, characterized in that: The refrigerator (20) is provided with slideways (40) on inner walls on opposite sides of the first position (50) and the second position (51); Matching slideways (41) are provided at both ends of the heat-insulating baffle (21) corresponding to the slideways (40), so that the heat-insulating baffle (21) can be slidably and sealedly installed on the refrigerator (20).

7. The refrigerator according to claim 1, characterized in that: Also includes: an evaporator (42) disposed in a compressor compartment at the bottom of the cryogenic space (22); An air duct (43) connecting the evaporator (42) and each air door; An evaporating fan (44) is disposed between the evaporator (42) and the air duct (43) and is used to transport the cooling energy of the evaporator (42) to the air duct (43).

8. The refrigerator according to claim 1, characterized in that: The temperature of the deep cold space (22) is adjusted in the range of -28°C to 40°C.

9. The refrigerator according to any one of claims 1 to 8, characterized in that: The refrigeration system comprises a compressor (10), wherein the compressor (10) comprises: Motor; a crankshaft (11); and A cylinder, wherein the crankshaft (11) connects the motor and the cylinder; The crankshaft (11) comprises a branch channel (111) and a main channel (112), wherein the main channel (112) has a three-stage stepped structure, and the crankshaft (11) comprises a distribution angle less than or equal to 60°.

10. The refrigerator according to claim 9, characterized in that: The compressor (10) further comprises: An air intake valve sheet, wherein the thickness of the air intake valve sheet is greater than or equal to 0.17 mm; and / or A cylinder head gasket (12), wherein the cylinder head gasket (12) is made of a mixed material of metal and nylon.

Images