Refrigeration equipment

Abstract

The utility model relates to refrigeration equipment, which comprises a box body, a refrigerating chamber, a heat exchanger and a heat exchanger, the refrigerating system comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger which are connected in sequence; the liquid storage device comprises a shell; the first inlet-outlet is connected with the second heat exchanger; the second inlet and outlet is connected with the compressor through a reversing device; the at least three partition plates are arranged between the first in-out opening and the second in-out opening so as to at least divide the liquid storage cavity into four inner cavities; the two partition plates close to the first inlet and outlet and the second inlet and outlet are defined as first partition plates, and the partition plate between the two first partition plates is defined as a second partition plate; the first communication part is arranged at the bottom of the first partition plate and allows the refrigerant to pass through; the second communicating part is arranged at the top of the second partition plate and allows the gas refrigerant to pass through; the second partition plate blocks flowing of the liquid refrigerant in the refrigerant, so that the liquid refrigerant is stored at the bottoms of the two inner cavities on the liquid inlet side, and the two-way storage function of the liquid storage device is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment, and in particular relates to a refrigeration equipment. Background Art

[0002] The cooling principle of refrigerators, freezers, and other refrigeration equipment is primarily based on the state changes and thermal properties of the refrigerant. By converting the refrigerant between liquid and gaseous states, heat is absorbed and released, achieving a cooling effect.

[0003] To ensure cooling capacity and system reliability, high-efficiency refrigeration equipment currently on the market requires a liquid accumulator at the outlet of the refrigerator's evaporator. The accumulator is an auxiliary device used to store liquid refrigerant, providing storage, gas-liquid separation, filtration, silencing, and refrigerant buffering. By storing unvaporized liquid refrigerant from the evaporator in the accumulator, it effectively prevents compressor liquid shock, which could affect the entire refrigeration system.

[0004] In related technologies, after a refrigeration system has been running for a certain period of time, the evaporator is prone to frost, affecting the heat exchange effect, so the evaporator needs to be defrosted. In some refrigeration equipment, a reversing device switches the flow direction of the refrigerant, turning the condenser into the evaporator and vice versa, causing the refrigerant to flow in the opposite direction to utilize the heat of the refrigerant to defrost the evaporator. However, during the reverse flow of the refrigerant, the liquid reservoir located at the evaporator outlet in the cooling mode of existing products cannot effectively store liquid refrigerant, and therefore cannot effectively regulate the refrigeration system, affecting the normal operation of the refrigeration system.

[0005] In view of this, this application is filed. Utility Model Content

[0006] The present invention aims to solve at least one of the technical problems in the related art to a certain extent.

[0007] According to an embodiment of the present disclosure, a refrigeration device is provided, comprising:

[0008] A box body, wherein a refrigeration compartment is formed, wherein the top and bottom ends of the box body are two opposite ends in the height direction of the box body;

[0009] A door connected to the box body to open or close the refrigeration compartment;

[0010] A refrigeration system is provided in the box to provide cooling for the refrigeration compartment, and the refrigeration system includes:

[0011] A compressor, a first heat exchanger, a throttling device, and a second heat exchanger connected in sequence by a refrigerant pipeline;

[0012] a reversing device connected to the refrigeration system for switching the flow direction of the refrigerant therein;

[0013] A liquid reservoir comprising:

[0014] a shell having a liquid storage cavity formed therein, the shell including a first inlet and a second inlet spaced apart along its extension direction, the first inlet and the second inlet being connected to the second heat exchanger, and the second inlet and the second inlet being connected to the compressor via the reversing device;

[0015] At least three partitions are arranged between the first inlet and the second inlet along the extension direction of the shell to at least divide the liquid storage cavity into four inner cavities;

[0016] a connecting portion formed in the housing for connecting two adjacent inner cavities so as to connect the two first inlets and outlets with the second inlet and outlet to form a gas passage;

[0017] The two connecting portions respectively adjacent to the first inlet and the second inlet are defined as first connecting portions, and the partition on which they are located is defined as a first partition; the connecting portion between the two first connecting portions is defined as a second connecting portion, and the partition on which it is located is defined as a second partition;

[0018] The first communication portion is formed at the bottom of the first partition plate to allow the refrigerant to pass through;

[0019] The second connecting portion is formed at the top of the second partition, so as to allow the gas refrigerant in the refrigerant to pass through and flow out to the outside of the liquid storage chamber through the gas channel; the second partition is used to block the flow of the liquid refrigerant in the refrigerant so that the liquid refrigerant is stored at the bottom of the two inner cavities close to the liquid inlet side.

[0020] The above technical solution has the following advantages or beneficial effects: the liquid accumulator with the above structure can store unevaporated liquid refrigerant within the evaporator when the refrigeration system of the refrigeration equipment is providing cooling to the refrigerated compartment. It can also store liquid refrigerant when the refrigerant in the refrigeration system of the refrigeration equipment is flowing in the reverse direction, thus providing the liquid accumulator with a bidirectional storage function, ensuring that the liquid refrigerant in the system is circulated and used within an appropriate range. Furthermore, the liquid accumulator with the above structure can be universally installed, thereby increasing its versatility and eliminating the need for markings or other means to prevent reverse installation of the liquid accumulator, thereby reducing production difficulty.

[0021] According to an embodiment of the present disclosure, the plane where the partition is located is arranged perpendicular to the extension direction of the shell.

[0022] The above technical solution has the following advantages or beneficial effects: the partitions are arranged perpendicular to the shell, which not only provides better structural stability and support, but also helps to establish a clear stratification between the liquid refrigerant and the gaseous refrigerant. Due to gravity, the liquid refrigerant naturally sinks while the gaseous refrigerant floats above, effectively achieving gas-liquid separation. At the same time, it can effectively reduce eddy currents and interference in the gas flow, making the gaseous refrigerant flow more stable and improving the heat exchange efficiency of the refrigeration system.

[0023] According to an embodiment of the present disclosure, in the height direction of the partition, a ratio of a maximum dimension of the communication portion to a maximum dimension of the partition is a, and a≤0.1.

[0024] The above technical solution has the following advantages or beneficial effects: by limiting the maximum size of the connecting part within a reasonable range of the maximum size of the partition, the smoothness of the flow of the gas refrigerant and the effectiveness of the storage of the liquid refrigerant can be effectively guaranteed, the efficiency and stability of the refrigeration system can be improved, and potential flow interference and phase mixing problems can be avoided.

[0025] According to an embodiment of the present disclosure, an extension direction of the shell forms an angle α with a first plane, α≤45°, α≥0°, wherein the first plane is perpendicular to a height direction of the box body.

[0026] The above technical solution has the following advantages or beneficial effects: effectively ensuring that the liquid refrigerant is deposited at the bottom of the liquid storage tank, improving the storage capacity of the liquid refrigerant, and preventing the liquid refrigerant from entering the compressor and causing the "liquid hammer" phenomenon that causes the compressor to malfunction.

[0027] According to an embodiment of the present disclosure, the shell includes a cylindrical portion and a conical portion respectively connected to both ends of the cylindrical portion, at least three partitions are arranged in the cylindrical portion, and the first inlet and outlet and the second inlet and outlet are respectively arranged on the two conical portions.

[0028] The above technical solution has the following advantages or beneficial effects: by setting the shell of the liquid accumulator into the above shape, the preset storage capacity of the liquid refrigerant of the liquid accumulator can be met, and the noise and energy consumption of the liquid accumulator can be further reduced.

[0029] According to an embodiment of the present disclosure, the two frustum portions are respectively a first frustum portion and a second frustum portion. In the direction from the first frustum portion to the second frustum portion, the first frustum portion is gradually expanded and the second frustum portion is gradually contracted. The first inlet and outlet and the second inlet and outlet are respectively opened at two ends of the first frustum portion and the second frustum portion that are far away from each other.

[0030] The above technical solution has the following advantages or beneficial effects: by designing the gradually expanding and contracting first and second frustum portions, and coordinating the first and second inlets and outlets at both ends, the effective volume of the liquid reservoir can be better utilized, thereby improving storage and processing capabilities.

[0031] According to an embodiment of the present disclosure, the liquid reservoir further includes a liquid inlet pipe, one end of which is connected to the outlet of the second heat exchanger, and the other end of which extends into the liquid storage cavity through the first inlet and outlet.

[0032] The above technical solution has the following advantages or beneficial effects: the provision of the liquid inlet pipe can guide the refrigerant to flow smoothly into the liquid storage tank, which helps to maintain the stability of the fluid and reduce eddies and turbulence.

[0033] According to an embodiment of the present disclosure, three partitions are provided, and two first partitions are symmetrically arranged on both sides of the second partition, and the extension direction of the shell is perpendicular to the height direction of the box body.

[0034] The above technical solution has the following advantages or beneficial effects: the above arrangement enables the liquid storage device to flexibly adapt to the bidirectional flow of the refrigerant, ensuring that good working performance can be maintained in any flow direction, thereby improving the applicability of the system.

[0035] According to an embodiment of the present disclosure, at least three of the partitions are arranged parallel to each other.

[0036] The above technical solution has the following advantages or beneficial effects: the parallel partitions can effectively isolate the gas refrigerant and liquid refrigerant areas, prevent the mixing of the gas refrigerant and the liquid refrigerant, make it easier for the gas refrigerant to flow out from the connecting part of the partition, and the liquid refrigerant is effectively confined to the bottom of part of the liquid storage cavity.

[0037] According to an embodiment of the present disclosure, a refrigeration device is provided, comprising:

[0038] A door connected to the box body to open or close the refrigeration compartment;

[0039] A refrigeration system is provided in the box body to provide cooling capacity for the refrigeration compartment, the refrigeration system comprising a compressor, a condenser, a throttling device and an evaporator connected in sequence by a refrigerant pipeline;

[0040] A liquid accumulator is connected between the evaporator and the compressor and is used to store the liquid refrigerant that has not evaporated in the evaporator. The liquid accumulator includes:

[0041] a shell having a liquid storage cavity formed therein, the shell including a first inlet and a second inlet spaced apart along its extension direction, the first inlet and the second inlet being connected to the outlet of the evaporator, and the second inlet and the second inlet being connected to the air inlet of the compressor;

[0042] At least three partitions are arranged between the first inlet and the second inlet along the extension direction of the shell to divide the liquid storage chamber into at least four inner chambers; two partitions respectively close to the first inlet and the second inlet are defined as first partitions, and a partition between the two first partitions is defined as a second partition;

[0043] a first connecting portion, located at the bottom of the first partition to connect the two inner cavities on both sides of the first partition, the first connecting portion allowing the refrigerant entering the inlet and outlet to pass through;

[0044] a second connecting portion, located on the top of the second partition plate, connecting the two inner cavities on both sides of the second partition plate, so that the first inlet and outlet are connected to the second inlet and outlet to form a gas channel; the second connecting portion allows gas refrigerant to pass through;

[0045] When the refrigerant enters the liquid accumulator through the first inlet and outlet, the liquid refrigerant therein flows to the bottom of the liquid storage cavity under the action of gravity, and the gaseous refrigerant therein gathers at the top of the liquid storage cavity; the second partition blocks the flow of the liquid refrigerant, so that the liquid refrigerant is stored in the two inner cavities near the first inlet and outlet;

[0046] When the liquid level of the liquid refrigerant is higher than the first connecting part, refrigerant accumulates in the inner cavity on the liquid inlet side and its pressure tends to gradually increase, so that the gas refrigerant flows out from the second inlet and outlet through the gas channel; the compressor oil stored in the liquid refrigerant forms small mist droplets under the stirring action of the gas refrigerant and flows back into the compressor with the gas refrigerant.

[0047] The above technical solution has the following advantages or beneficial effects: the liquid accumulator of the above structure can store liquid refrigerant in the refrigerant entering the first inlet and outlet, so that the liquid accumulator has a bidirectional storage function, ensuring that the liquid refrigerant in the system is circulated and used within an appropriate range. During the operation of the refrigeration system, the gaseous refrigerant will stir the compressor oil accumulated at the bottom of the liquid refrigerant, causing it to gradually form small mist droplets. The droplets then flow back into the compressor with the gaseous refrigerant to replenish the compressor oil lost in the compressor. This eliminates the need for a separate oil return structure, resulting in a simple and easy-to-use structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 It is a schematic diagram of the internal structure of a liquid reservoir in the prior art;

[0050] Figure 2 is a front view of a refrigeration device according to an embodiment of the present disclosure;

[0051] Figure 3 This is a schematic structural diagram of a refrigeration device with a door omitted according to an embodiment of the present disclosure;

[0052] Figure 4 is a schematic diagram of a partial internal structure of a refrigeration device according to an embodiment of the present disclosure;

[0053] Figure 5 is a schematic structural diagram of a refrigeration system in a refrigeration device according to an embodiment of the present disclosure;

[0054] Figure 6 is a flow path of the refrigerant in the cooling mode of the refrigeration device according to an embodiment of the present disclosure;

[0055] Figure 7 is a flow path of the refrigerant in the defrost mode of the refrigeration device according to an embodiment of the present disclosure;

[0056] Figure 8 is a schematic structural diagram of a liquid accumulator in a refrigeration device according to an embodiment of the present disclosure;

[0057] Figure 9 is a schematic diagram of the internal structure of a liquid accumulator in a refrigeration device according to an embodiment of the present disclosure;

[0058] Figure 10 is a refrigerant flow path when the accumulator is in cooling mode according to an embodiment of the present disclosure;

[0059] Figure 11 is a refrigerant flow path of the accumulator in the defrost mode according to an embodiment of the present disclosure;

[0060] Figure 12 is a refrigerant flow path of a refrigeration device in a cooling mode according to another embodiment of the present disclosure;

[0061] Figure 13 is a cross-sectional view of a liquid accumulator at the height of a box body in a refrigeration device according to an embodiment of the present disclosure;

[0062] Figure 14 This is a schematic diagram of the assembly of a liquid storage device in a refrigeration device according to another embodiment of the present disclosure. Figure 1 ;

[0063] Figure 15 This is a schematic diagram of an assembly of a liquid storage device in a refrigeration device according to another embodiment of the present disclosure. Figure 2 .

[0064] in, Figure 1 Middle: liquid reservoir housing 1'; air return pipe 2'; evaporation pipe 3'; oil return hole 4'.

[0065] in, Figures 2 to 15 : Refrigeration equipment 100; box body 1; box shell 11; box liner 12; access port 13; refrigeration compartment; compressor compartment 15; box door 2; refrigeration system 3; compressor 31; first heat exchanger 32; throttling device 33; second heat exchanger 34; liquid reservoir 4; shell 41; cylindrical portion 411; first frustum portion 412; second frustum portion 413; first inner cavity 414; second inner cavity 415; third inner cavity 416; fourth inner cavity 417; first inlet and outlet 421; second inlet and outlet 422; first partition 43; second partition 44; first connecting portion 45; second connecting portion 46; liquid inlet pipe 47; air outlet pipe 48; liquid refrigerant 5; reversing device 6. DETAILED DESCRIPTION

[0066] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may also be beneficially combined in other embodiments.

[0067] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the disclosure. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments, unless there is a conflict.

[0068] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0070] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0071] The refrigeration equipment provided by the embodiments of the present invention can have various implementation forms.

[0072] The refrigeration equipment 100 provided by the present invention is as follows Figures 2 to 15 The refrigeration device 100 is described. The refrigeration device may be a refrigerator or a freezer.

[0073] In this embodiment, the refrigeration device 100 is taken as an upright refrigerator for example.

[0074] refer to Figure 3 In an exemplary embodiment of the refrigeration device 100 of the present invention, the refrigeration device 100 may include a box body 1. The box body has a top end and a bottom end, and the top end and the bottom end of the box body are two opposite ends arranged in the height direction of the box body. Figure 2 , the height direction of the box is F1, and the top and bottom shown are the top and bottom ends of the box respectively.

[0075] In some embodiments of the present application, the housing 1 is substantially in the shape of a rectangular parallelepiped, and the housing 1 forms the main structure of the refrigeration device 100. It is understood that in other embodiments, the housing 1 may also adopt a shell 41 structure of other shapes.

[0076] In some embodiments of the present application, the box body 1 may include a box shell 11. The box shell 11 has an installation space therein.

[0077] In some embodiments of the present application, the box body 1 may include a box liner 12. The box liner 12 is connected to the interior of the box body 1, that is, the box liner 12 is arranged in the installation space.

[0078] The inside of the box liner 12 has a refrigeration compartment, which is used to store food under a low-temperature environment. Wherein, the refrigeration compartment can be a cold storage room, a temperature-changing room, or a freezing room.

[0079] In some embodiments of the present application, a foaming space is formed between the box liner 12 and the box outer shell 11 , and the foaming space is provided with a heat-insulating layer to achieve heat preservation and heat insulation of the box body 1 .

[0080] In some embodiments of the present application, the heat-insulating layer is a foaming layer. The foaming space is used to inject foaming material to foam the box body 1, so that a foaming layer is formed between the box liner 12 and the box shell 11.

[0081] It can be understood that the foam layer plays a role of heat insulation to reduce the heat transfer between the inside of the refrigeration device 100 and the outside, thereby improving the heat insulation effect of the refrigeration compartment.

[0082] In some embodiments of the present application, reference is made to Figure 2 The refrigeration device 100 may include a door 2. The door 2 is connected to the housing 11 to open or close the refrigeration compartment.

[0083] In some embodiments of the present application, the door 2 is rotatably connected to the housing 1, so that the door 2 and the housing 1 are rotatably connected to form an openable and closable structure. The door 2 rotates to open or close the refrigeration compartment inside the housing 1.

[0084] The appearance of the refrigeration device 100 is defined by a box body 1 having a refrigeration compartment and a door 2 for opening or closing the refrigeration compartment inside the box body 1 .

[0085] In some embodiments of the present application, reference is made to Figure 3 The refrigeration compartment has an access opening 13. The access opening 13 is provided on the cabinet 1 to connect the refrigeration compartment with the outside of the cabinet 1. The cabinet door 2 is rotatably connected to the access opening 13 of the cabinet 1, and the cabinet door 2 is rotated to open or close the refrigeration compartment.

[0086] In some embodiments of the present application, the number of refrigeration compartments inside the box body 1 may be one or more.

[0087] Correspondingly, one or more doors 2 can be provided as required.

[0088] Among them, one door 2 corresponds to one or more refrigeration compartments. Or multiple doors 2 correspond to multiple refrigeration compartments. It should be noted that this application does not limit the number of doors 2 and refrigeration compartments.

[0089] refer to Figure 3 Taking the vertical refrigeration device 100 as an example, the access opening 13 of the box body 1 is arranged on the front side of the box body 1. This arrangement facilitates the user to take and put items into the refrigeration compartment through the access opening 13 on the front side.

[0090] In some embodiments of the present application, both the outer box shell 11 and the inner box liner 12 have a front access opening 13 , and the front side of the box body 1 is located at the periphery of the front side of the inner box liner 12 .

[0091] It should be noted that the expressions of the directions of up, down, left, right, front and back in this article are all based on the direction in which the user faces the refrigeration device 100 when the refrigeration device 100 is in use. Among them, the side facing the user when the refrigeration device 100 is in use is defined as the front, the side opposite thereto is defined as the back, the vertical direction is the up and down direction, and the horizontal direction is the left and right direction.

[0092] In some embodiments of the present application, the refrigeration device 100 may include a box frame. The box frame is connected between the front side of the outer shell 11 and the front side of the inner liner 12 to seal the outer shell 11 and the front side of the inner liner 12, so that the outer shell 111, the inner liner 12, and the box frame form a closed foaming space, which facilitates the installation of the foaming layer.

[0093] In some embodiments of the present application, reference is made to Figure 5 The refrigeration device 100 may include a refrigeration system 3. The refrigeration system 3 may include a compressor 31, a first heat exchanger 32, a throttling device 33, and a second heat exchanger 34, which are sequentially connected through a refrigerant pipeline.

[0094] In the cooling mode, the first heat exchanger 32 functions as a condenser, and the second heat exchanger 34 functions as an evaporator. The refrigerant circulates in the cooling system 3 and continuously changes state, thereby enabling the refrigeration device 100 to achieve the purpose of cooling.

[0095] In some embodiments of the present application, reference is made to Figure 4 The interior of the housing 1 is provided with a compressor compartment 15, which is independent of the refrigeration compartment and is used to house at least part of the refrigeration system 3. The compressor compartment 15 is located at the bottom of the housing, and the first heat exchanger 32 and the compressor 31 are disposed within the compressor compartment 15.

[0096] Specifically, the refrigeration principle of the refrigeration equipment 100 is as follows: the liquid refrigerant 5 in a low-temperature and low-pressure state evaporates in the evaporator and becomes a low-temperature and low-pressure refrigerant vapor, while absorbing the heat inside the box 1, so that the ambient temperature is reduced, showing a refrigeration effect in the refrigerated room. After the refrigerant vapor completes evaporation in the evaporator, it is compressed by the compressor 313 and becomes a high-temperature and high-pressure refrigerant vapor.

[0097] The high-temperature and high-pressure refrigerant vapor carries a large amount of heat and realizes heat exchange with the external air environment through the condenser. After releasing heat to the surrounding air environment, the refrigerant vapor becomes a saturated high-pressure refrigerant. After the throttling and pressure reduction effect of the throttling device 33, it is restored to a low-temperature and low-pressure liquid refrigerant 5, enters the evaporator again for evaporation, and enters the next cycle, thereby achieving continuous cooling.

[0098] Refrigeration equipment such as refrigerators usually provide cooling capacity to the refrigeration compartment. Figure 5 In this state, the first heat exchanger 32 acts as a condenser, the second heat exchanger 34 acts as an evaporator, and the refrigerant flows in the refrigeration system 3 in a forward direction, that is, it circulates through the compressor 31, the first heat exchanger 32, the throttling device 33 and the second heat exchanger 34 in sequence. Figure 5 The direction of the arrow shown in the figure is the flow direction of the refrigerant.

[0099] After a certain period of refrigeration, the second heat exchanger 34, which serves as the evaporator, will be heavily frosted, affecting the heat exchange effect, and the evaporator needs to be defrosted. In some embodiments of the present application, by changing the flow direction of the refrigerant in the refrigeration system 3 so that the first heat exchanger 32 serves as the evaporator and the second heat exchanger 34 serves as the condenser, the heat of the refrigerant can be used to defrost the second heat exchanger 34.

[0100] For the sake of convenience, the refrigeration system 3 providing cooling capacity to the refrigerated compartment is referred to as a refrigeration mode, and the refrigeration system 3 defrosting the evaporator in the refrigeration mode is referred to as a defrost mode.

[0101] It can be understood that the evaporator and the condenser are opposite in the cooling mode and the defrost mode, that is, the evaporator in the cooling mode is the condenser in the defrost mode, and the condenser in the cooling mode is the evaporator in the defrost mode.

[0102] In order to change the flow direction of the refrigerant, the refrigeration device 100 may include a reversing device 6. The reversing device 6 is connected to the refrigeration system 3 to switch the flow direction of the refrigerant in the refrigeration system 3 to achieve switching between the refrigeration mode and the defrosting mode.

[0103] The reversing device 6 may be a four-way reversing valve.

[0104] It is understandable that reference Figure 7 In the defrost mode, the refrigerant flows in the reverse direction in the refrigeration system 3, that is, the refrigerant circulates in the refrigeration system 3 through the compressor 31, the second heat exchanger 34, the throttling device 33 and the first heat exchanger 32 in sequence. Among them, the first heat exchanger 32 serves as an evaporator and the second heat exchanger 34 serves as a condenser. Figure 7 The direction of the arrow shown in the figure is the flow direction of the refrigerant.

[0105] For the sake of convenience, in this embodiment, the flow path of the refrigerant is simplified. The flow path of the refrigerant in the cooling mode is simplified to flowing from the compressor 31 through the first heat exchanger 32 to the second heat exchanger 34, and the flow path of the refrigerant in the defrost mode is simplified to flowing from the compressor 31 through the second heat exchanger 34 to the first heat exchanger 32.

[0106] For further reference, Figure 6 The refrigeration device 100 may include a liquid accumulator 4, which is disposed in the housing 1. In the cooling mode, the liquid accumulator 4 is connected between the outlet of the evaporator and the air inlet of the compressor 31 to store the liquid refrigerant 5 that has not evaporated in the evaporator.

[0107] In the related art, during the reverse flow of the refrigerant in the refrigeration system 3 , the existing liquid accumulator cannot store the liquid refrigerant 5 , and therefore, the refrigeration system 3 cannot be effectively regulated.

[0108] As for the structure of the liquid reservoir 4 in the prior art, Figure 1 As shown, a conventional liquid reservoir 4 typically includes a reservoir housing 1', a return air pipe 2', and an evaporation pipe 3'. In cooling mode, the return air pipe 2' is located at the top of the reservoir housing 1' and is connected to the air inlet of the compressor 31 via the return air pipe 2'. The evaporation pipe 3' is located at the bottom of the reservoir housing 1', with the top of the evaporation pipe 3' extending into the inner cavity of the reservoir housing 1' and connected to the outlet of the evaporator via the evaporation pipe 3'.

[0109] During the actual operation of the refrigeration equipment, part of the lubricating oil in the compressor 31 will participate in the refrigerant circulation process together with the refrigerant, which will cause the amount of lubricating oil in the compressor 31 to be reduced accordingly during operation. Therefore, the existing liquid reservoir 4 generally includes an oil return hole 4', wherein the oil return hole 4' is opened at a position of the evaporating tube 3' close to the bottom of the liquid reservoir shell 1'.

[0110] When the refrigerant mixed with lubricating oil enters the accumulator housing 1', due to the difference in density between the two (i.e., the lubricating oil has a higher density than the liquid refrigerant 5), the lubricating oil will accumulate at the bottom of the liquid refrigerant 5, that is, the lubricating oil will be deposited at the bottom of the accumulator housing 1'. This allows the lubricating oil to enter the evaporator tube 3' through the oil return hole, thereby participating in the refrigeration cycle and returning more of it to the compressor 31, thereby reducing excessive lubricating oil loss in the compressor 31.

[0111] When the refrigerant flows in the reverse direction in the refrigeration system 3 , the liquid refrigerant 5 in the refrigerant entering the accumulator shell 41 will flow out through the oil return hole, and the purpose of the accumulator 4 to store the liquid refrigerant 5 in both directions cannot be achieved.

[0112] In order to enable the liquid accumulator 4 to store the liquid refrigerant 5 when the refrigerant flows in the forward or reverse direction, in some embodiments of the present application, the liquid accumulator 4 may include a shell 41.

[0113] refer to Figure 8 The shell 41 is the main body of the liquid accumulator 4 and forms the appearance of the liquid accumulator 4. A liquid storage cavity for storing refrigerant is formed inside the shell 41.

[0114] The housing 41 may include two inlets and outlets, namely a first inlet and outlet 421 and a second inlet and outlet 422. The first inlet and outlet 421 and the second inlet and outlet 422 are spaced apart along their extending direction.

[0115] The first inlet and outlet 421 is connected to the second heat exchanger 34, and the second inlet and outlet 422 is connected to the compressor 31 via the reversing device 6. The refrigerant in the refrigeration system 3 can flow into the liquid storage chamber through the first inlet and outlet 421 and flow out of the liquid storage chamber through the second inlet and outlet 422, or can flow into the liquid storage chamber through the second inlet and outlet 422 and flow out of the liquid storage chamber through the first inlet and outlet 421.

[0116] refer to Figure 6 When the refrigeration equipment is in cooling mode, the refrigerant flows from the compressor 31 through the first heat exchanger 32 to the second heat exchanger 34. The refrigerant flowing out of the outlet of the second heat exchanger 34 enters the liquid storage chamber through the first inlet and outlet 421 connected thereto, wherein the unevaporated liquid refrigerant 5 is stored in the liquid storage chamber, and the gaseous refrigerant flows into the compressor 31 through the second inlet and outlet 422.

[0117] refer to Figure 7 When the refrigeration equipment is in defrost mode, the refrigerant flows from the compressor 31 to the first heat exchanger 32 through the second heat exchanger 34. The refrigerant flowing out of the compressor 31 enters the liquid storage chamber through a second inlet and outlet 422 connected thereto, and the liquid refrigerant 5 therein is stored in the liquid storage chamber, and the gaseous refrigerant therein flows into the compressor 31 through the first inlet and outlet 421 through the refrigeration system 3.

[0118] In this embodiment, reference Figure 9 The liquid storage chamber 4 may include at least three partitions. The at least three partitions are arranged between the two inlets and outlets 42 along the extension direction of the shell 41 to at least separate the liquid storage chamber into four inner chambers.

[0119] The liquid reservoir 4 may include a connecting portion formed in the housing for connecting two adjacent inner cavities, so that the first inlet and outlet 421 and the second inlet and outlet 422 sequentially form a gas channel through the four connected inner cavities.

[0120] The two connecting portions close to the first inlet and outlet 421 and the second inlet and outlet 422 are defined as first connecting portions 45, and the partition where the first connecting portion 45 is located is defined as first partition 43. There are two first partitions 43 and two first connecting portions 45, and they are arranged in a one-to-one correspondence.

[0121] The connecting portion between the two first connecting portions 45 is defined as the second connecting portion 46, and the partition where the second connecting portion 46 is located is defined as the second partition 44. The second partition 44 is provided corresponding to the second connecting portion 46, and there is at least one second partition 44.

[0122] refer to Figure 9 A first connecting portion 45 is formed at the bottom of the first partition 43 to allow refrigerant to pass through. Refrigerant flowing into the liquid storage chamber through the first inlet and outlet 421 or the second inlet and outlet 422 can flow into the inner cavity between the first partition 43 and the second partition 44 through the first connecting portion 45.

[0123] The second communication portion 46 is formed on the top of the second partition plate 44 to allow the gas refrigerant in the refrigerant to pass through. The gas refrigerant can flow out of the liquid storage chamber through the gas channel.

[0124] The second partition 44 is used to block the flow of liquid refrigerant 5 in the refrigerant so that the liquid refrigerant 5 is stored at the bottom of the two inner chambers near the liquid inlet side (liquid inlet). The liquid inlet is the first inlet 421 or the second inlet 422 for the refrigerant to enter the liquid accumulator 4.

[0125] It should be noted that, in this embodiment, the first connecting portion 45 can be formed between the bottom of the first partition 43 and the bottom inner wall of the liquid storage chamber to facilitate the flow of the liquid refrigerant 5 that has fallen onto the bottom inner wall of the liquid storage chamber. The second connecting portion 46 can be formed between the top of the second partition 44 and the top inner wall of the liquid storage chamber, or the second connecting portion 46 can be separately provided on the second partition 44.

[0126] When the number of partitions is three, the three partitions form the liquid storage cavity into four inner cavities arranged along the extension direction of the shell 1. Figure 9 , defined in the direction from the first inlet and outlet 421 to the second inlet and outlet 422 , the four inner cavities are a first inner cavity 414 , a second inner cavity 415 , a third inner cavity 416 and a fourth inner cavity 417 .

[0127] The first inlet and outlet 421 is provided on the housing 1 and located on the wall of the first inner cavity 414 , so that the first inlet and outlet 412 communicates with the first inner cavity 414 and the outside of the liquid storage cavity.

[0128] The second inlet and outlet 422 is provided on the housing 1 and located on the wall of the fourth inner cavity 417 , so that the first inlet and outlet 412 communicates with the fourth inner cavity 417 and the outside of the liquid storage cavity.

[0129] The first inner cavity 414 and the second inner cavity 415 are formed on both sides of the first partition plate 43 near the first inlet and outlet 421 , and the bottoms of the first inner cavity 414 and the second inner cavity 415 are connected through the first connecting portion 45 .

[0130] The second inner cavity 415 and the third inner cavity 416 are formed on both sides of the second partition plate 44 , and the tops of the second inner cavity 415 and the third inner cavity 416 are communicated with each other through the second communication portion 46 .

[0131] The third inner cavity 416 and the fourth inner cavity 417 are formed on both sides of the other first partition plate 43 , and the bottoms of the third inner cavity 416 and the fourth inner cavity 417 are connected through the first connecting portion 45 .

[0132] refer to Figure 9 The first inlet and outlet 421 and the second inlet and outlet 422 are connected in sequence through the first inner cavity 414, the second inner cavity 415, the third inner cavity 416 and the fourth inner cavity 417 to form a gas channel for air flow.

[0133] refer to Figure 10 The arrows inside the housing 1 of the accumulator 4 represent the flow path of the gaseous refrigerant. When the refrigerant flows from left to right, the liquid refrigerant 5 falls to the bottom of the first inner cavity 414 due to gravity and flows through the first connecting portion 45 to the bottom of the second inner cavity 415.

[0134] When the liquid level is too high and exceeds the first connection 45 at the bottom of the left first partition 43, the pressure of the refrigerant accumulated on the left side gradually increases, causing the liquid refrigerant 5 to move to the right, toward the middle second partition 44. Only the gaseous refrigerant can flow through the second connection 46. At this time, the liquid refrigerant 5 is stored in the first inner cavity 414 and the second inner cavity 415 between the middle second partition 44 and the first inlet and outlet 421. At the same time, the compressor oil stored at the bottom of the liquid refrigerant 5 is also stirred by the gaseous refrigerant, gradually forming small mist droplets, which then flow back to the compressor 31 with the airflow.

[0135] refer to Figure 11 The arrows inside the housing 1 of the accumulator 4 represent the flow path of the gaseous refrigerant. When the refrigerant flows from the right side to the left side, the liquid refrigerant 5 falls to the bottom of the fourth inner chamber 417 due to gravity and flows through the first connecting portion 45 to the bottom of the third inner chamber 416.

[0136] When the liquid level is excessive and exceeds the first connection 45 at the bottom of the right first partition 43, the accumulated refrigerant pressure on the right side gradually increases, causing the liquid refrigerant 5 to move to the left, toward the center second partition 44. Only the gaseous refrigerant can flow through the second connection 46. At this time, the liquid refrigerant 5 is stored in the third and fourth inner cavities 416 and 417 between the center second partition 44 and the second inlet and outlet 422. At the same time, the compressor oil stored at the bottom of the liquid refrigerant 5 is also agitated by the gaseous refrigerant, gradually forming small mist droplets, which flow out of the liquid storage chamber with the airflow.

[0137] The first inlet and outlet 421 of the liquid accumulator 4 is connected to the second heat exchanger 34, and the second inlet and outlet 422 is connected to the compressor 31. When the refrigeration system 3 of the refrigeration equipment provides cooling for the refrigeration compartment, the liquid refrigerant 5 that has not evaporated in the evaporator can be stored.

[0138] When the refrigerant in the refrigeration system 3 of the refrigeration equipment flows in the reverse direction, the purpose of storing liquid refrigerant 5 can also be achieved, so that the liquid accumulator 4 has a bidirectional storage function. In addition, the liquid accumulator 4 of the above structure can be universally installed, which improves the versatility of the liquid accumulator 4. It does not require the use of markings or other means to prevent the liquid accumulator 4 from being installed upside down, which reduces the difficulty of production.

[0139] It can be understood that, in this embodiment, when a plurality of second partitions 44 are provided, the plurality of second connecting portions 46 are correspondingly formed at the top of the second partitions 44 .

[0140] Of course, in some other embodiments, when multiple second partitions 44 are provided, a second connecting portion 46 is formed on the top of at least one second partition 44, and the remaining second connecting portions 46 can be formed at other positions of the corresponding second partition 44, wherein the second partition with the second connecting portion 46 formed on the top is used to limit the flow of liquid refrigerant 5 and allow gaseous refrigerant to pass through.

[0141] In some other embodiments of this application, refer to Figure 12 The refrigeration equipment may include a refrigeration system 3. The refrigeration system 3 is disposed within the housing to provide cooling for the refrigerated compartment. The refrigeration system 3 includes a compressor 31, a condenser, a throttling device 33, and an evaporator, which are sequentially connected by refrigerant pipelines. The liquid reservoir 4 may be directly connected between the outlet of the evaporator and the air inlet of the compressor 31 to store unevaporated liquid refrigerant 5 in the evaporator.

[0142] In this embodiment, the first inlet and outlet 421 on the liquid accumulator 4 is connected to the outlet of the evaporator, and the second inlet and outlet 422 is directly connected to the air inlet of the compressor 31 .

[0143] When the refrigerant enters the liquid accumulator 4 through the first inlet and outlet 421, the liquid refrigerant 5 in the refrigerant flows to the bottom of the liquid storage chamber under the action of gravity, while the gaseous refrigerant in the refrigerant accumulates at the top of the liquid storage chamber. The second partition 44 blocks the flow of the liquid refrigerant 5, so that the liquid refrigerant 5 is stored in the two inner chambers near the liquid inlet side.

[0144] When the liquid level of the liquid refrigerant 5 is higher than the first connecting portion 45, refrigerant accumulates in the inner cavity on the liquid inlet side and its pressure gradually increases, causing the gaseous refrigerant to flow out of the second inlet / outlet 422 through the gas passage. The compressor oil stored in the liquid refrigerant 5 is stirred by the gaseous refrigerant to form small mist droplets and flow back into the compressor 31 along with the gaseous refrigerant.

[0145] In this embodiment, the first inlet and outlet 421 and the second inlet and outlet 422 of the liquid reservoir 4 can be connected to the outlet of the evaporator and the air inlet of the compressor 31 respectively, which not only realizes two-way storage, but also realizes the universal installation of the liquid reservoir 4, thereby improving the universality of the liquid reservoir 4. There is no need to use markings or other means to prevent the liquid reservoir 4 from being installed upside down, thereby reducing the difficulty of production.

[0146] During the operation of the refrigeration system 3, the gaseous refrigerant will stir the compressor oil gathered at the bottom of the liquid refrigerant 5, causing it to gradually form small mist droplets, and then flow back into the compressor 31 with the gaseous refrigerant to replenish the compressor oil lost in the compressor 31. There is no need to set up a separate oil return structure, and the structure is simple and easy to use.

[0147] In some embodiments of the present application, the plane where the partition is located is perpendicular to the extension direction of the shell 1.

[0148] In this embodiment, the baffles are vertically connected to the interior of the housing 41. This not only provides greater structural stability and support, but also helps establish a clear separation between the liquid refrigerant 5 and the gaseous refrigerant. Due to gravity, the liquid refrigerant 5 naturally sinks, while the gaseous refrigerant floats above, effectively achieving gas-liquid separation. Furthermore, the baffles, positioned vertically to the housing 41, effectively reduce eddy currents and interference within the gas passage, ensuring smoother gaseous refrigerant flow and improving the heat exchange efficiency of the refrigeration system 3.

[0149] In some embodiments of the present application, in the height direction of the partition, the ratio of the maximum dimension of the connecting portion to the maximum dimension of the partition is a, and a≤0.1.

[0150] It can be understood that, in the cross section of the box body in the height direction, the extension direction of the partition is the height direction of the partition. Figure 13 , F2 represents the height direction of the partition, wherein the top and bottom shown are the two ends in the height direction of the partition.

[0151] In this embodiment, the height direction of the partition is perpendicular to the central axis of the shell 41. Figure 13 The maximum dimension of the connecting portion in the height direction of the partition is b, and the maximum dimension of the partition in its own height direction is c.

[0152] In this embodiment, by limiting the maximum size of the connecting part within a reasonable range of the maximum size of the partition, the smoothness of the flow of the gas refrigerant and the effectiveness of the storage of the liquid refrigerant 5 can be effectively guaranteed, the efficiency and stability of the refrigeration system 3 can be improved, and potential flow interference and phase mixing problems can be avoided.

[0153] The maximum dimension of the connecting portion in the height direction of the partition cannot be too large. If it is too large, the first connecting portion 45 and the second connecting portion 46 will be too large. If the second connecting portion 46 is too large, the second partition 44 will not be able to effectively block the flow of the liquid refrigerant 5 at the bottom of the liquid storage chamber, which may cause the liquid refrigerant 5 to flow directly back to the compressor 31, causing a "liquid hammer" phenomenon. If the first connecting portion 45 is too large, the gas refrigerant and the liquid refrigerant 5 may be mixed too much, resulting in poor gas reflux, thereby affecting the refrigeration efficiency. At the same time, an excessively large first connecting portion 45 may cause the gas refrigerant to flow too fast, affecting the oil return effect.

[0154] To prevent the connecting portion from being too large, the maximum dimension b of the connecting portion is set to no greater than the first parameter value. The first parameter value can be 0.1c to 0.09c. Consider selecting an appropriate and specific parameter during the specific design. For example, the first parameter value can be 0.1c. Where c is the maximum dimension of the partition in its own height direction.

[0155] In some embodiments of the present application, reference is made to Figure 14 , Figure 15 The extension direction of the housing 41 forms an angle α with the first plane, α≤45°, α≥0°. The first plane is a plane perpendicular to the height direction of the box, that is, the first plane is perpendicular to the height direction of the box. Figure 14 、 Figure 15 In FIG, the dotted line represents the extension direction of the shell, and the solid line represents the first plane.

[0156] By reasonably setting the angle α, the liquid refrigerant 5 is effectively ensured to be deposited at the bottom of the liquid storage tank 4, thereby improving the storage capacity of the liquid refrigerant 5 and preventing the liquid refrigerant 5 from entering the compressor 31 and causing a "liquid hammer" phenomenon that causes the compressor 31 to malfunction.

[0157] The angle α cannot be too large. If it is too large, the liquid refrigerant 5 cannot be deposited at the bottom of the liquid accumulator 4, and the second partition 44 cannot effectively block the liquid refrigerant 5. At the same time, it cannot ensure that the gaseous refrigerant stirs the liquid refrigerant 5 and carries away the compressor oil back to the compressor 31. To ensure that the liquid accumulator 4 effectively stores the liquid refrigerant 5, the angle α is set to no greater than the second parameter value. The second parameter value can be 40° to 45°. Consider selecting an appropriate and specific parameter during the specific design. For example, the second parameter value can be 45°.

[0158] Illustratively, in this embodiment, the shell 41 of the liquid reservoir 4 is arranged horizontally, that is, the angle α is 0°.

[0159] After the liquid accumulator 4 is assembled in the cabinet 1 of the refrigeration equipment 100, the shell 41 of the liquid accumulator 4 is set horizontally, which can effectively reduce the height difference that the liquid refrigerant and the gas refrigerant need to overcome during the flow process, reduce the flow resistance, and promote the smooth flow of the refrigerant.

[0160] refer to Figure 14 In some embodiments of the present application, housing 41 may include a cylindrical portion 411, with at least three partitions disposed within cylindrical portion 411. Cylindrical portion 411 provides a large storage volume, suitable for storing large flows of liquid or gas. Furthermore, cylindrical portion 411 provides a uniform force-bearing surface, helping to improve the structural stability of liquid reservoir 4 and prevent deformation or damage caused by internal and external pressure differences.

[0161] The housing 41 may include two frustum portions, which are respectively connected to two ends of the cylindrical portion 411. The first inlet and outlet 421 and the second inlet and outlet 422 are respectively disposed on the two frustum portions.

[0162] By setting the shell 41 of the liquid accumulator 4 into the above-mentioned shape, the preset storage capacity of the liquid refrigerant 5 of the liquid accumulator 4 can be met, and the noise and energy consumption of the liquid accumulator 4 can be further reduced.

[0163] The two frustum portions are a first frustum portion 412 and a second frustum portion 413. In the direction from the first frustum portion 412 to the second frustum portion 413, the first frustum portion 412 is gradually expanded, while the second frustum portion 413 is gradually contracted. The first inlet and outlet 42 and the second inlet and outlet 422 are respectively located at opposite ends of the first frustum portion 412 and the second frustum portion 413.

[0164] In this embodiment, the gradually expanding and contracting first and second truncated conical portions 412, 413, in conjunction with the first and second inlets 421, 422 at the ends, provide a gradually increasing flow area for refrigerant flow, reducing flow resistance and allowing liquid refrigerant 5 to enter the liquid accumulator 4 smoothly. Consequently, the flow rate of the gaseous refrigerant can be controlled, reducing airflow impact and ensuring gas flow stability. Furthermore, the gradually expanding and contracting configuration of the truncated conical portions allows for better utilization of the effective volume of the liquid accumulator 4, enhancing storage and processing capabilities.

[0165] In some embodiments of the present application, reference is made to Figure 15 The liquid reservoir 4 may include a liquid inlet pipe 47 . One end of the liquid inlet pipe 47 is connected to the outlet of the second heat exchanger 34 , and the other end thereof extends into the liquid storage cavity through the first inlet and outlet 421 .

[0166] In this embodiment, the liquid inlet pipe 47 is provided to guide the refrigerant to flow smoothly into the liquid storage tank 4, which helps to maintain the stability of the fluid and reduce eddy currents and turbulence.

[0167] The liquid storage container 4 may include an air outlet pipe 48 , wherein the air outlet pipe 48 is connected to a second inlet / outlet 422 away from the liquid inlet pipe 47 . The air outlet pipe 48 is adapted to be connected to the compressor 31 .

[0168] In some embodiments of the present application, three partitions are provided, with two first partitions 43 symmetrically arranged on either side of the second partition 44. This arrangement enables the liquid accumulator 4 to flexibly adapt to the bidirectional flow of the refrigerant, ensuring good working performance in any flow direction, thereby improving the applicability of the system.

[0169] In some embodiments of the present application, at least three partitions are arranged parallel to each other.

[0170] In this embodiment, the three partitions are arranged parallel to each other, which facilitates processing and production and is conducive to improving production efficiency. At the same time, the three partitions arranged parallel to each other effectively isolate the gas refrigerant and liquid refrigerant 5 areas, prevent the mixing of the gas refrigerant and the liquid refrigerant 5, and make it easier for the gas refrigerant to flow out from the connecting part of the partition, while the liquid refrigerant 5 is effectively restricted to the bottom of part of the liquid storage cavity.

[0171] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

[0172] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. Refrigeration equipment, characterized in that include: A box body, wherein a refrigeration compartment is formed, wherein the top and bottom ends of the box body are two opposite ends in the height direction of the box body; A door connected to the box body to open or close the refrigeration compartment; A refrigeration system is provided in the box to provide cooling for the refrigeration compartment, and the refrigeration system includes: A compressor, a first heat exchanger, a throttling device, and a second heat exchanger connected in sequence by a refrigerant pipeline; a reversing device connected to the refrigeration system for switching the flow direction of the refrigerant therein; A liquid reservoir comprising: a shell having a liquid storage cavity formed therein, the shell including a first inlet and a second inlet spaced apart along its extension direction, the first inlet and the second inlet being connected to the second heat exchanger, and the second inlet and the second inlet being connected to the compressor via the reversing device; At least three partitions are arranged between the first inlet and the second inlet along the extension direction of the shell to at least divide the liquid storage cavity into four inner cavities; a connecting portion formed in the housing for connecting two adjacent inner cavities so as to connect the two first inlets and outlets with the second inlet and outlet to form a gas passage; The two connecting portions close to the first inlet and the second inlet are defined as first connecting portions, and the partition where they are located is defined as a first partition; the connecting portion between the two first connecting portions is defined as a second connecting portion, and the partition where it is located is defined as a second partition; The first communication portion is formed at the bottom of the first partition plate to allow the refrigerant to pass through; The second connecting portion is formed at the top of the second partition, so as to allow the gas refrigerant in the refrigerant to pass through and flow out to the outside of the liquid storage chamber through the gas channel; the second partition is used to block the flow of the liquid refrigerant in the refrigerant so that the liquid refrigerant is stored at the bottom of the two inner cavities close to the liquid inlet side.

2. The refrigeration equipment according to claim 1, characterized in that The plane where the partition is located is perpendicular to the extension direction of the shell.

3. The refrigeration equipment according to claim 1, characterized in that In the height direction of the partition, a ratio of a maximum dimension of the communication portion to a maximum dimension of the partition is a, and a≤0.

1.

4. The refrigeration equipment according to claim 1, characterized in that An extension direction of the shell forms an angle α with a first plane, α≤45°, α≥0°, wherein the first plane is perpendicular to the height direction of the box.

5. The refrigeration equipment according to claim 1, characterized in that The shell includes a cylindrical portion and a frustum portion connected to both ends of the cylindrical portion, at least three partitions are arranged in the cylindrical portion, and the first inlet and outlet and the second inlet and outlet are respectively arranged on the two frustum portions.

6. The refrigeration equipment according to claim 1, characterized in that The two frustum portions are respectively a first frustum portion and a second frustum portion. In the direction from the first frustum portion to the second frustum portion, the first frustum portion is gradually expanded and the second frustum portion is gradually contracted. The first inlet and outlet and the second inlet and outlet are respectively opened at two ends of the first frustum portion and the second frustum portion that are far away from each other.

7. The refrigeration equipment according to claim 1, characterized in that The liquid reservoir further includes a liquid inlet pipe, one end of which is connected to the outlet of the second heat exchanger, and the other end of which extends into the liquid storage cavity through the first inlet and outlet.

8. The refrigeration equipment according to claim 1, characterized in that There are three partitions, two of which are symmetrically arranged on both sides of the second partition. The extension direction of the shell is perpendicular to the height direction of the box body.

9. The refrigeration equipment according to claim 1, characterized in that At least three of the partitions are arranged parallel to each other.

10. Refrigeration equipment, characterized in that include: a box body, in which a refrigeration compartment is formed; A door connected to the box body to open or close the refrigeration compartment; A refrigeration system is provided in the box body to provide cooling capacity for the refrigeration compartment, the refrigeration system comprising a compressor, a condenser, a throttling device and an evaporator connected in sequence by a refrigerant pipeline; A liquid accumulator is connected between the evaporator and the compressor and is used to store the liquid refrigerant that has not evaporated in the evaporator. The liquid accumulator includes: a shell having a liquid storage cavity formed therein, the shell including a first inlet and a second inlet spaced apart along its extension direction, the first inlet and the second inlet being connected to the outlet of the evaporator, and the second inlet and the second inlet being connected to the air inlet of the compressor; At least three partitions are arranged between the first inlet and the second inlet along the extension direction of the shell to divide the liquid storage chamber into at least four inner chambers; two partitions respectively close to the first inlet and the second inlet are defined as first partitions, and a partition between the two first partitions is defined as a second partition; a first connecting portion, located at the bottom of the first partition to connect the two inner cavities on both sides of the first partition, the first connecting portion allowing the refrigerant entering the inlet and outlet to pass through; a second connecting portion, located on the top of the second partition plate, connecting the two inner cavities on both sides of the second partition plate, so that the first inlet and outlet are connected to the second inlet and outlet to form a gas channel; the second connecting portion allows gas refrigerant to pass through; When the refrigerant enters the liquid accumulator through the first inlet and outlet, the liquid refrigerant therein flows to the bottom of the liquid storage cavity under the action of gravity, and the gaseous refrigerant therein gathers at the top of the liquid storage cavity; the second partition blocks the flow of the liquid refrigerant, so that the liquid refrigerant is stored in the two inner cavities near the first inlet and outlet; When the liquid level of the liquid refrigerant is higher than the first connecting part, refrigerant accumulates in the inner cavity on the liquid inlet side and its pressure tends to gradually increase, so that the gas refrigerant flows out from the second inlet and outlet through the gas channel; the compressor oil stored in the liquid refrigerant forms small mist droplets under the stirring action of the gas refrigerant and flows back into the compressor with the gas refrigerant.

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