Refrigerator

Abstract

The utility model relates to a refrigerator and belongs to the technical field of refrigeration equipment. The device comprises a box body, a box door, a negative pressure bin, a refrigerating system and a vacuumizing pump. A storage chamber is arranged in the box body; the box door is movably arranged on the front side of the box body and used for opening and closing the storage chamber; the negative pressure bin is arranged in the storage chamber; a negative pressure chamber capable of being closed is arranged in the negative pressure bin; the refrigerating system comprises an evaporator and a compressor, the evaporator is arranged in the negative pressure cavity, and a refrigerant in the evaporator can take out heat in the negative pressure cavity so as to reduce the temperature in the negative pressure cavity; the compressor is arranged in the box body and is communicated with the evaporator; the refrigerating system is used for compressing a refrigerant; and the vacuumizing pump is arranged outside the negative pressure bin, one end of the vacuumizing pump communicates with the negative pressure cavity, and the other end of the vacuumizing pump communicates with the storage chamber, so that the vacuumizing pump can pump out gas in the negative pressure cavity, the negative pressure cavity is in a negative pressure state, and the refrigerating speed of the refrigerator is increased.

Description

Technical Field

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

[0002] A refrigerator is a container that uses the phase change of a refrigerant to create a low-temperature environment for storing food. It is one of the indispensable household appliances for people's home life. As people's living standards improve, the requirements for refrigerators are getting higher and higher.

[0003] A conventional refrigerator generally includes a cabinet body and a cabinet door arranged at the front side of the cabinet body. A storage compartment is formed in the cabinet body. An evaporator is arranged in the storage compartment. When the refrigerant in the evaporator evaporates, it cools and forms cold air, and brings out the heat in the storage compartment to achieve cooling of the storage compartment.

[0004] In current refrigerators, in order to ensure that stored items do not deteriorate during long-term storage, the refrigeration effect required is balanced refrigeration. The refrigeration speed is generally slow and cannot achieve rapid cooling of beverages or food, causing inconvenience to users in some scenarios. Utility Model Content

[0005] The utility model aims to solve the technical problem that the existing refrigerator has a slow refrigeration speed and cannot realize rapid cooling of beverages or food.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] According to one aspect of the utility model, the utility model provides a refrigerator, comprising: a box body, which forms an outer shell of the refrigerator, and a storage compartment is arranged in the box body; a box door, which is movably arranged at the front side of the box body, and the box door is used to open and close the storage compartment; a negative pressure warehouse, which is arranged in the storage compartment; the negative pressure warehouse has a sealable negative pressure chamber; a refrigeration system, including an evaporator and a compressor, the evaporator is arranged in the negative pressure chamber, and the refrigerant in the evaporator can take out the heat in the negative pressure chamber to reduce the temperature in the negative pressure chamber; the compressor is arranged in the box body and connected with the evaporator; the compressor is used to compress the refrigerant; a vacuum pump is arranged outside the negative pressure warehouse, one end of the vacuum pump is connected with the negative pressure chamber, and the other end is connected with the storage compartment, so that the vacuum pump can extract the gas in the negative pressure chamber to put the negative pressure chamber in a negative pressure state.

[0008] In some embodiments of the present application, a pressure relief valve is included, which is arranged outside the negative pressure chamber, one end of the pressure relief valve is connected to the negative pressure chamber, and the other end of the pressure relief valve is connected to the storage compartment; when the pressure relief valve is opened, the negative pressure chamber and the storage compartment are connected to each other to balance the pressure between the negative pressure chamber and the storage compartment.

[0009] In some embodiments of the present application, the negative pressure bin includes a bin body and a bin door; the bin body is arranged in the storage compartment, and the opening direction of the bin body is consistent with the opening direction of the storage compartment; the bin door is movably connected to the opening of the bin body to close the opening of the bin body to form a closed negative pressure chamber.

[0010] In some embodiments of the present application, a sealing member is provided on the side of the bin door facing the bin body; when the bin door is connected to the bin body, the sealing member abuts against the inner side wall of the opening of the bin body to seal the connection between the bin body and the bin door.

[0011] In some embodiments of the present application, a hinge is provided on the warehouse door, and the hinge is rotatably connected to the warehouse body; a grip is recessed on the side of the warehouse door facing away from the warehouse body for a user to hold.

[0012] In some embodiments of the present application, a door switch is provided on the inner side wall of the opening of the warehouse body; when the warehouse door closes the opening of the warehouse body, the warehouse door abuts against the door switch to obtain the closing information of the warehouse door.

[0013] In some embodiments of the present application, a liquid container is further provided in the negative pressure chamber; the liquid container has a containing cavity for containing liquid; a handle is provided on the outer wall of the liquid container for the user to hold, so that the user can move the liquid container and place it in the negative pressure chamber.

[0014] In some embodiments of the present application, a temperature sensor is provided in the negative pressure chamber, and the temperature sensor is penetrated through the side wall of the negative pressure chamber; one end of the temperature sensor located outside the negative pressure chamber is electrically connected to the refrigeration system, and one end of the temperature sensor penetrated into the negative pressure chamber is in contact with the liquid container, so as to detect the temperature of the liquid in the liquid container; the temperature sensor can transmit the detected temperature information to the refrigeration system, and the refrigeration system can regulate the temperature in the negative pressure chamber according to the temperature information.

[0015] In some embodiments of the present application, a temperature measuring groove is recessed on the outer wall of the liquid container, and a temperature measuring portion is convexly formed in the accommodating cavity, the temperature measuring groove is formed in the temperature measuring portion, and the temperature measuring groove is not connected to the accommodating cavity; when the liquid container is located in the negative pressure chamber, the temperature sensor is accommodated inside the temperature measuring groove.

[0016] In some embodiments of the present application, a pressure sensor is also provided in the negative pressure chamber; the pressure sensor is arranged on the inner wall of the negative pressure chamber and is electrically connected to the vacuum pump and the pressure relief valve; the pressure sensor is used to detect the pressure data in the negative pressure chamber, and can transmit the pressure data to the vacuum pump and the pressure relief valve, and the vacuum pump and the pressure relief valve can regulate the pressure in the negative pressure chamber according to the pressure data.

[0017] In some embodiments of the present application, the evaporator is disposed at the bottom of the negative pressure bin and is spaced apart from the bottom wall of the negative pressure bin; and the liquid container is disposed above the evaporator.

[0018] In some embodiments of the present application, a box liner is included, which is arranged in the box body, and the internal structure of the box liner forms the storage compartment; a hollow cavity recessed toward the storage compartment is provided on the rear side of the box liner; the hollow cavity is used to accommodate part of the return pipe connecting the evaporator and the compressor, as well as part of the connecting pipe connecting the vacuum pump and the pressure relief valve with the negative pressure chamber.

[0019] In some embodiments of the present application, a connecting column is protruding on the rear side surface of the negative pressure chamber, and the end of the connecting column away from the negative pressure chamber passes through the box and extends into the cavity; a through hole is provided in the connecting column to connect the negative pressure chamber with the outside, and the return pipe is passed through the through hole.

[0020] In some embodiments of the present application, a sealing plug and a locking cap are provided on the connecting column, one end of the sealing plug is arranged in the gap between the return pipe and the via hole, and the other end abuts against the end face of the connecting column; the locking cap is connected to the connecting column and presses the sealing plug onto the connecting column.

[0021] In some embodiments of the present application, a partition is further provided in the box, and the partition and the inner wall of the box form a partition chamber, and the partition chamber is used to accommodate the vacuum pump and the pressure relief valve; an air outlet is opened on the partition, and the air outlet connects the partition chamber with the storage compartment.

[0022] It can be seen from the above technical solutions that the embodiments of the utility model have at least the following advantages and positive effects:

[0023] The present application provides a refrigerator, wherein a sealed negative pressure chamber is arranged in the storage room of the refrigerator, and an evaporator capable of taking out heat and a vacuum pump capable of extracting gas in the negative pressure chamber are arranged in the negative pressure chamber. The vacuum pump can extract gas in the negative pressure chamber to make the negative pressure chamber in a negative pressure state, so as to increase the heat transfer speed of the liquid, so that the refrigerator can quickly freeze beverages or foods with a large water content, so that they can quickly freeze, so that users can quickly drink frozen beverages in the hot summer, and ensure the requirement of quick refrigeration insurance of some foods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the utility model.

[0025] Figure 2 yes Figure 1 Schematic diagram of the installation structure of the inner negative pressure chamber of the refrigerator on the box liner.

[0026] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle box from another angle.

[0027] Figure 4 yes Figure 2 Schematic diagram of the decomposition structure.

[0028] Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the middle box at one angle.

[0029] Figure 6 yes Figure 5 Schematic diagram of the three-dimensional structure of the middle box from another angle.

[0030] Figure 7 yes Figure 4 Schematic diagram of the decomposed structure of the medium negative pressure warehouse and refrigeration system.

[0031] Figure 8 yes Figure 7 Schematic diagram of the decomposed structure of the medium negative pressure warehouse and refrigeration system from another angle.

[0032] Fig. 9 yes Figure 8 Schematic diagram of the decomposed structure of the medium negative pressure warehouse and refrigeration system from another angle.

[0033] Fig.10 It is a schematic diagram of the three-dimensional structure of the negative pressure chamber.

[0034] Fig.11 It is a schematic diagram of the three-dimensional structure of the door of the negative pressure warehouse.

[0035] Fig.12 yes Fig.11Schematic diagram of the three-dimensional structure of the door of the medium negative pressure chamber from another angle.

[0036] Fig.13 It is a schematic diagram of the three-dimensional structure of a liquid container.

[0037] Fig.14 yes Fig.13 Schematic cross-sectional view of a liquid container.

[0038] Fig.15 This is the rapid cooling workflow diagram for the negative pressure compartment of the refrigerator.

[0039] The following are the descriptions of the reference numerals:

[0040] 100, refrigerator; 10, box body; 20, box door; 30, box liner; 31, storage compartment; 32, cavity; 33, partition; 331, air outlet; 40, refrigeration system; 41, second evaporator; 42, compressor; 43, condenser; 44, return pipe; 50, negative pressure bin; 51, bin body; 511, negative pressure chamber; 512, door switch; 513, connecting column; 514, pressure relief hole; 515, vacuum hole; 516, mounting hole; 52, compartment door; 521, hinge; 522, sealing member; 523, gripping portion; 53, temperature sensor; 54, pressure sensor; 60, vacuum pump; 61, first connecting pipe; 70, pressure relief valve; 71, second connecting pipe; 80, sealing plug; 81, locking cap; 90, liquid container; 91, handle; 92, temperature measuring portion; 93, temperature measuring tank. DETAILED DESCRIPTION

[0041] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In order to ensure that the stored items are not spoiled during long-term storage, the traditional refrigerator requires balanced refrigeration, and its refrigeration speed is generally slow, which cannot achieve rapid cooling of beverages or food, resulting in inconvenience for users in some scenarios. Therefore, this embodiment provides a new refrigerator.

[0046] For the convenience of description, unless otherwise specified, the directions of up, down, left, right, front and back in this article are all based on the state of the refrigerator when it is in use, with the refrigerator door being the front and the opposite direction being the back, the vertical direction being the up and down direction, and the horizontal direction being the left and right direction.

[0047] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the utility model. Figure 2 yes Figure 1 Schematic diagram of the installation structure of the negative pressure chamber in the refrigerator on the box liner.

[0048] See also Figure 1 and Figure 2 This embodiment provides a refrigerator 100 , which may include a box body 10 . The box body 10 may constitute a hollow structure forming a rectangular parallelepiped to form an outer shell of the refrigerator 100 .

[0049] It is conceivable that in some other embodiments, the box body 10 may also adopt a hollow shell structure of other shapes, such as a cube or a cylinder.

[0050] In some embodiments, a storage compartment 31 may be provided in the box body 10, and the storage compartment 31 may be used as an independent storage space, and the storage space may be used to store various items. The storage compartment 31 may be used as a refrigerator, a freezer, etc., to meet different storage needs such as refrigeration and freezing according to the types of stored items.

[0051] In some embodiments, a plurality of storage compartments 31 may be disposed in the housing 10 , and the plurality of storage compartments 31 may be disposed in the housing 10 in an up-and-down manner or in a left-and-right manner.

[0052] It is conceivable that, in some other embodiments, the shape of the internal space of the storage compartment 31 can be adjusted accordingly according to the shape of the box body 10 or other usage requirements, which is not limited here.

[0053] See also Figure 2 In some embodiments, the refrigerator 100 may further include a box liner 30 , which may be disposed in the housing 10 , and the interior of the box liner 30 may be constructed to form a storage compartment 31 .

[0054] It is conceivable that one box liner 30 or a plurality of box liner 30 may be disposed in the box body 10 , and one or more storage compartments 31 may be formed in each box liner 30 .

[0055] In some embodiments, two box bladders 30 may be provided, and the two box bladders 30 may be arranged in an upper and lower partition, that is, one box bladder 30 may be located above the other box bladder 30. The upper box bladder 30 may be configured to form a refrigerating chamber, and the lower box bladder 30 may be configured to form a freezing chamber.

[0056] See also Figure 1 In some embodiments, the refrigerator 100 may include a door 20 , which may be rotatably connected to the front side of the cabinet 10 to open or close the storage compartment 31 .

[0057] In some embodiments, the body 10 and the door 20 can be connected by a hinge so that the door 20 of the refrigerator 100 can rotate around the axis of the hinge, so that the door 20 of the refrigerator 100 can be rotated open or closed, thereby realizing the opening and closing of the storage compartment 31.

[0058] In some embodiments, a plurality of doors 20 may be provided, and the plurality of doors 20 may be provided in a one-to-one correspondence with the plurality of storage compartments 31. Alternatively, a plurality of doors 20 may open and close a storage compartment 31 together.

[0059] See also Figure 2 In some embodiments, the refrigerator 100 may further include a refrigeration system 40, which may be disposed inside the cabinet 10. The refrigeration system 40 may provide cold air inside the refrigerator 100 to maintain a low temperature environment of each storage compartment 31.

[0060] In some embodiments, the refrigeration system 40 may include a compressor 42 , which may compress the refrigerant into a high-temperature and high-pressure refrigerant vapor.

[0061] In some embodiments, the refrigeration system 40 may include a condenser 43, and the compressor 42 may deliver the compressed refrigerant to the condenser 43. The condenser 43 may condense high-temperature and high-pressure refrigerant vapor.

[0062] In some embodiments, the refrigeration system 40 may further include a throttling device (not shown). The condenser 43 may deliver the condensed refrigerant to the throttling device. The throttling device may be a capillary tube. The throttling device may be used to throttle and reduce the pressure of the refrigerant.

[0063] In some embodiments, the refrigeration system 40 may include a first evaporator (not shown). The first evaporator may be disposed on the rear wall or the top of the storage compartment 31. The throttling device may transport the throttled and depressurized refrigerant to the first evaporator. The first evaporator may be used to evaporate and boil the refrigerant vapor so as to absorb the heat of the surrounding medium to cool the cold storage compartment or the freezer compartment of the refrigerator 100.

[0064] In some embodiments, the compressor 42 , the condenser 43 , the throttling device, and the first evaporator may be sequentially connected to form a refrigeration circuit. The refrigerant may circulate in the refrigeration circuit to refrigerate the refrigerator compartment or freezer compartment of the cabinet 10 .

[0065] In some embodiments, the refrigerator 100 may further include a central controller (not shown in the figure), which may be disposed in the housing 10. The central controller may be electrically connected to the refrigeration system 40 and control the temperature inside the refrigerator 100. The central controller may also be electrically connected to other components inside the refrigerator 100 to manage and coordinate the operation of the various components inside the refrigerator 100.

[0066] In some embodiments, the central controller can monitor the temperature inside the refrigerator 100. When the temperature exceeds the set range, the central controller will send a signal to control the compressor 42, the cooling fan or other cooling components to work or stop to maintain the required temperature. The central controller can also start the defrost heater according to the preset time and sensor feedback to melt the frost on the condenser 43.

[0067] In some embodiments, the refrigerator 100 may further include a display panel (not shown in the figure), which may be disposed on the door 20. The display panel may be electrically connected to the central controller. The display panel may display the working status of each component in the refrigerator 100 and the temperature and pressure inside the refrigerator 100.

[0068] Figure 3 yes Figure 2 A schematic structural diagram of the middle box 30 from another angle. Figure 4 yes Figure 2 Schematic diagram of the decomposition structure. Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure of the middle box 30 at one angle. Figure 6 yes Figure 5 A schematic three-dimensional structure diagram of the middle box 30 from another angle. Figure 7 yes Figure 4 Schematic diagram of the exploded structure of the medium negative pressure chamber 50 and the refrigeration system 40. Figure 8 yes Figure 7 A schematic diagram of the exploded structure of the medium negative pressure chamber 50 and the refrigeration system 40 from another angle. Fig. 9 yes Figure 8 A schematic diagram of the exploded structure of the medium negative pressure chamber 50 and the refrigeration system 40 from another angle.

[0069] See also Figures 3 to 9 In some embodiments, the refrigerator 100 may include a negative pressure bin 50 , and the negative pressure bin 50 may be disposed in the storage compartment 31 .

[0070] The negative pressure chamber 50 may have a sealed negative pressure chamber 511 inside, and the temperature and pressure in the negative pressure chamber 511 may be adjusted. By reducing the pressure and temperature in the negative pressure chamber 511, the negative pressure chamber 511 is placed in a negative pressure state to increase the freezing and cooling speed of the liquid in the negative pressure chamber 511.

[0071] See also Figure 7 In some embodiments, the refrigeration system 40 of the refrigerator 100 may further include a second evaporator 41, and the second evaporator 41 may be disposed in the negative pressure chamber 511 so that the refrigerant in the second evaporator 41 can take out the heat in the negative pressure chamber 511 to reduce the temperature in the negative pressure chamber 511.

[0072] By means of the second evaporator 41 which is separately arranged in the negative pressure chamber 511 , the temperature of the negative pressure chamber 50 can be quickly reduced to achieve the purpose of rapid temperature reduction and cooling.

[0073] See also Figure 7 In some embodiments, the second evaporator 41 can be set at the bottom of the negative pressure bin 50 and have a gap with the bottom wall of the negative pressure bin 50, which can increase the contact space between the second evaporator 41 and the negative pressure chamber 511 to speed up the refrigeration speed.

[0074] See also Figure 7 and Figure 8 In some embodiments, the second evaporator 41 and the compressor 42 and the condenser 43 may be interconnected through a return pipe 44 to form a circulation loop, and the refrigerant may move in the circulation loop to gradually reduce the temperature in the negative pressure chamber 511.

[0075] It is conceivable that the second evaporator 41 and the first evaporator may share a set of compressors 42. Of course, the second evaporator 41 may also be equipped with a set of compressors 42 separately.

[0076] See also Figure 8 and Fig. 9 In some embodiments, the refrigerator 100 may include a vacuum pump 60 , and the vacuum pump 60 may be disposed outside the negative pressure chamber 50 .

[0077] In some implementations, one end of the vacuum pump 60 may be connected to the negative pressure chamber 511 in the negative pressure bin 50, and the other end of the vacuum pump 60 may be connected to the storage compartment 31. The vacuum pump 60 can pump the gas in the negative pressure chamber 511 into the storage compartment 31, so that the negative pressure chamber 511 is in a negative pressure state, thereby accelerating the cooling and freezing speed of the liquid.

[0078] In some embodiments, the vacuum pump 60 may be electrically connected to a central controller, and the central controller may control the opening or closing of the vacuum pump 60 by outputting a control signal, thereby controlling the pressure in the negative pressure chamber 511 .

[0079] In some other embodiments, the vacuum pump 60 can be electrically connected to the display panel, and the display panel can obtain and display information such as the working status and working time of the vacuum pump 60, so that the user can clearly understand the situation in the negative pressure chamber 50.

[0080] See also Figure 8 and Fig. 9 In some embodiments, a first connecting pipe 61 may be provided on the vacuum pump 60. The first connecting pipe 61 may connect the vacuum pump 60 with the negative pressure chamber 511 and the storage room 31. The vacuum pump 60 can extract the gas in the negative pressure chamber 511 into the storage room 31 to realize the recycling of cold air.

[0081] It is conceivable that in some other embodiments, the vacuum pump 60 may also be directly fixed on the outer wall of the negative pressure chamber 50 and communicated with the negative pressure chamber 511 to extract the gas in the negative pressure chamber 511. As long as the gas in the negative pressure chamber 511 can be extracted into the storage compartment 31.

[0082] See also Figure 8 and Fig. 9 In some embodiments, the refrigerator 100 may further include a pressure relief valve 70. The pressure relief valve 70 may be disposed outside the negative pressure chamber 50.

[0083] In some embodiments, one end of the pressure relief valve 70 may be in communication with the negative pressure chamber 511, and the other end of the pressure relief valve 70 may be in communication with the storage compartment 31. When the pressure relief valve 70 is opened, the negative pressure chamber 511 and the storage compartment 31 may be in communication with each other. The gas in the storage compartment 31 may automatically flow back into the negative pressure chamber 511 under the action of pressure, so that the pressure in the negative pressure chamber 511 and the pressure in the storage compartment 31 are balanced with each other.

[0084] In some embodiments, the pressure relief valve 70 may be a solenoid valve, which may be electrically connected to the central controller. The central controller may control the opening or closing of the pressure relief valve 70 by outputting a control signal, thereby controlling the pressure in the negative pressure chamber 511 .

[0085] In some other embodiments, the pressure relief valve 70 may also be electrically connected to a display panel, and the display panel may obtain information such as the working status and working time of the pressure relief valve 70 and display it.

[0086] See also Fig. 9 In some embodiments, the pressure relief valve 70 may be provided with a second connecting pipe 71. The second connecting pipe 71 may connect the negative pressure chamber 511 with the storage compartment 31. The pressure relief valve 70 may be disposed in the middle of the second connecting pipe 71, and may cut off or connect the second connecting pipe 71, so that the negative pressure chamber 511 and the storage compartment 31 may be cut off or connected at any time.

[0087] It is conceivable that in some other embodiments, the pressure relief valve 70 can be directly connected to the outer wall of the negative pressure chamber 50, as long as it can cut off and connect the negative pressure chamber 511 and the storage compartment 31 to achieve air pressure balance in the two chambers.

[0088] See also Figure 6 In some embodiments, a cavity 32 that is recessed toward the storage compartment 31 may be provided on the rear side of the box 30. The cavity 32 may be configured in a rectangular shape, and may be used to accommodate part of the return pipe 44, part of the first connecting pipe 61, and part of the second connecting pipe 71, so that the first connecting pipe 61 and the second connecting pipe 71 do not extend out of the rear plane of the box 30, thereby preventing them from interfering with the side wall of the box body 10.

[0089] See also Figure 6 In some embodiments, a plurality of through holes may be provided on the bottom wall and the side wall of the cavity 32 of the box 30, and the return pipe 44, the first connecting pipe 61 and the second connecting pipe 71 may pass through the through holes.

[0090] See also Figure 3In some embodiments, one end of the first connecting pipe 61 can pass through the through hole on the bottom wall of the cavity 32 to communicate with the negative pressure chamber 511; the other end of the first connecting pipe 61 can pass through the through hole on the side wall of the cavity 32 and extend into the storage compartment 31. The vacuum pump 60 can be provided at one end of the first connecting pipe 61 extending into the storage compartment 31.

[0091] In some embodiments, one end of the second connecting pipe 71 can pass through the through hole on the bottom wall of the cavity 32 to communicate with the negative pressure chamber 511; the other end of the second connecting pipe 71 can pass through the through hole on the side wall of the cavity 32 and extend into the storage compartment 31, and the pressure relief valve 70 can be set at one end of the second connecting pipe 71 extending into the storage compartment 31.

[0092] See also Figure 5 In some embodiments, a partition 33 may be further provided in the box 30. The partition 33 may form a partition chamber with the inner wall of the box 30. The partition chamber may be used to accommodate the vacuum pump 60, the pressure relief valve 70, and part of the first connecting pipe 61 and part of the second connecting pipe 71 to prevent the vacuum pump 60, the pressure relief valve 70 and the relative pipeline from leaking out, thereby improving the aesthetics.

[0093] See also Figure 5 In some embodiments, an air outlet 331 is opened on the partition plate 33 , and the air outlet 331 connects the partition chamber with the storage compartment 31 , so that the negative pressure chamber 511 can be connected with the storage compartment 31 .

[0094] Fig.10 It is a schematic diagram of the three-dimensional structure of the negative pressure chamber. Fig.11 It is a schematic diagram of the three-dimensional structure of the door of the negative pressure warehouse. Fig.12 yes Fig.11 Schematic diagram of the three-dimensional structure of the door of the medium negative pressure chamber from another angle. Fig.13 It is a schematic diagram of the three-dimensional structure of a liquid container. Fig.14 yes Fig.13 Schematic cross-sectional view of a liquid container.

[0095] See also Figures 8 to 12 In some embodiments, the negative pressure bin 50 may include a bin body 51, which may be disposed in the storage compartment 31. The opening direction of the bin body 51 may be consistent with the opening direction of the storage compartment 31, so that the liquid to be frozen can be quickly placed in the negative pressure chamber 511.

[0096] See also Fig. 9 and Fig.10In some embodiments, a connecting column 513 may be provided on the rear side of the bin body 51, and the connecting column 513 may protrude from one end away from the bin body 51. One end of the connecting column 513 away from the negative pressure bin 50 may pass through the box 30 and extend into the cavity 32. A through hole is provided in the connecting column 513 to connect the negative pressure chamber 511 with the outside. The return pipe 44 may pass through the through hole and pass out of the negative pressure bin 50.

[0097] See also Figure 8 and Fig. 9 In some embodiments, a sealing plug 80 may be provided on the connecting column 513, and the sealing plug 80 may be sleeved on the reflux pipe 44. One end of the sealing plug 80 may be disposed in the gap between the reflux pipe 44 and the via hole of the connecting column 513; the other end of the sealing plug 80 may abut against the end surface of the connecting column 513 to seal the gap between the reflux pipe 44 and the via hole on the connecting column 513 to prevent leakage of the negative pressure chamber 511.

[0098] See also Figure 8 and Fig. 9 In some embodiments, a locking cap 81 may be provided on the connecting column 513, an internal thread may be provided inside the locking cap 81, an external thread may be provided on the outer peripheral wall of the connecting column 513, and the locking cap 81 may be threadedly connected to the connecting column 513 to press the sealing plug 80 located between the locking cap 81 and the connecting column 513 onto the connecting column 513.

[0099] In some other embodiments, the locking cap 81 may also be connected to the connecting column 513 by interference fit or bonding to achieve tight contact with the sealing plug 80 .

[0100] See also Fig. 9 and Fig.10 In some embodiments, a vacuum hole 515 may be provided on the rear side of the bin body 51 , and a mounting tube may be protruded from the vacuum hole 515 to facilitate interconnection with the first connecting tube 61 .

[0101] See also Fig. 9 and Fig.10 In some embodiments, a pressure relief hole 514 may be provided on the rear side of the bin body 51 , and a mounting pipe may be protruded from the pressure relief hole 514 to facilitate interconnection with the second connecting pipe 71 .

[0102] See also Fig.11 and Fig.12 In some embodiments, the negative pressure chamber 50 may further include a chamber door 52 , which may be movably connected to the opening of the chamber body 51 to close the opening of the chamber body 51 to form a closed negative pressure chamber 511 .

[0103] See also Fig.11In some embodiments, a hinge 521 may be provided on the warehouse door 52, and the hinge 521 may be rotatably connected to the warehouse body 51 so that the warehouse door 52 can rotate around the axis of the hinge 521 to seal or open the opening of the warehouse body 51.

[0104] It is conceivable that the articulated member 521 may be a rotating device such as a hinge, a rotating shaft or a hinge, as long as it can realize the relative rotation between the bin door 52 and the bin body 51 .

[0105] See also Fig.12 In some embodiments, a grip portion 523 may be provided on the compartment door 52. The grip portion 523 may be provided on a side away from the compartment body 51. The grip portion 523 may be recessed inwardly so that a user can open the compartment door 52 conveniently and quickly without affecting the closing of the box door 20.

[0106] See also Fig.11 In some embodiments, a seal 522 may be provided on the door 52, and the seal 522 may be provided on a side facing the warehouse body 51. When the door 52 is connected to the warehouse body 51, the seal 522 may abut against the inner side wall of the opening of the warehouse body 51 to seal the connection between the warehouse body 51 and the door 52.

[0107] In some embodiments, the door 52 may include two stepped plates, and the seal 522 may be a rectangular rubber ring or a silicone ring. The seal 522 may be sleeved on the outer peripheral wall of the plate facing the warehouse body 51, so that when the door 52 is connected to the warehouse body 51, the seal 522 can seal the warehouse body 51 and the door 52.

[0108] See also Fig.10 In some embodiments, a door switch 512 may be provided on the warehouse body 51, and the door switch 512 may be located on the inner side wall of the opening. When the warehouse door 52 closes the opening of the warehouse body 51, the warehouse door 52 abuts against the door switch 512, so that the closing information of the warehouse door 52 can be obtained.

[0109] In some embodiments, the door switch 512 may be electrically connected to the central controller and the display panel. When the door 52 abuts against the door switch 512, the door switch 512 may send a corresponding electrical signal to the central controller and the display panel to display and remind the user whether the door 52 of the negative pressure chamber 50 is closed.

[0110] See also Figure 7 , Fig.13 and Fig.14 In some embodiments, a liquid container 90 may be disposed in the negative pressure chamber 50. The liquid container may be a receiving cavity for receiving liquid, and the receiving cavity may be used to store the liquid.

[0111] The liquid may be water or a beverage, etc. By putting the liquid into the liquid container 90 , the liquid can be taken out of or put into the negative pressure chamber 50 more conveniently.

[0112] It is conceivable that in some other embodiments, the liquid may be directly placed into the negative pressure chamber 511 for freezing.

[0113] See also Fig.13 In some embodiments, a handle 91 may be provided on the outer wall of the liquid container 90 , and the handle 91 may be used for the user to hold, so that the user can quickly move the liquid container 90 to be placed in or removed from the negative pressure chamber 511 .

[0114] See also Figure 7 In some embodiments, the liquid container 90 can be placed directly above the second evaporator 41, and the second evaporator 41 can be in direct contact with the liquid container 90, so that the second evaporator 41 can quickly take out the heat in the liquid container 90 to increase the cooling speed of the liquid.

[0115] See also Figure 7 and Fig.10 In some embodiments, a temperature sensor 53 may be disposed in the negative pressure chamber 50 . The temperature sensor 53 may be disposed on the side wall of the negative pressure chamber 50 and extend into the negative pressure chamber 511 .

[0116] See also Fig.10 In some embodiments, the rear side wall of the negative pressure chamber 50 may be provided with a mounting hole 516, and the rear side wall of the box 30 may also be provided with a through hole corresponding to the mounting hole 516. The temperature sensor 53 may pass through the through hole on the box 30 and the mounting hole 516 on the negative pressure chamber 50 and then penetrate into the negative pressure chamber 511.

[0117] In some embodiments, one end of the temperature sensor 53 outside the negative pressure chamber 50 can be electrically connected to the refrigeration system 40, and one end of the temperature sensor 53 that penetrates into the negative pressure chamber 50 can contact the liquid container 90 to detect the temperature of the liquid in the liquid container 90. The temperature sensor 53 can transmit the detected temperature information to the refrigeration system 40, and the refrigeration system 40 can adjust the temperature in the negative pressure chamber 511 according to the temperature information.

[0118] In some other embodiments, the temperature sensor 53 can be electrically connected to the central controller and transmit the detected temperature information to the central controller, and the central controller can control the working state of the refrigeration system to control the temperature in the negative pressure chamber 511.

[0119] See also Fig.13 and Fig.14In some embodiments, the outer wall of the liquid container 90 may be recessed with a temperature measuring groove 93 , and the temperature measuring groove 93 may be used to accommodate the temperature sensor 53 so that the temperature sensor 53 can measure the temperature of the liquid inside the liquid container 90 .

[0120] In some embodiments, a temperature measuring portion 92 may be protrudingly provided in the accommodating cavity of the liquid container 90 , a temperature measuring groove 93 may be formed in the temperature measuring portion 92 , and the temperature measuring groove 93 is not connected to the accommodating cavity.

[0121] When the liquid container 90 is located in the negative pressure chamber 50, the temperature sensor 53 can be accommodated inside the temperature measuring groove 93, so that the temperature sensor 53 can extend into the center of the liquid container 90 for detection, making it more accurate to measure the temperature value of the liquid.

[0122] See also Fig.10 In some examples, a pressure sensor 54 may be further provided in the negative pressure chamber 50. The pressure sensor 54 may be provided on the inner wall of the negative pressure chamber 511 and may be electrically connected to the vacuum pump 60 and the pressure relief valve 70.

[0123] The pressure sensor 54 can be used to detect the pressure data in the negative pressure chamber 511, and can transmit the pressure data to the vacuum pump 60 and the pressure relief valve 70. The vacuum pump 60 and the pressure relief valve 70 can adjust the pressure in the negative pressure chamber 511 according to the pressure data.

[0124] In some other embodiments, the pressure sensor 54 can be directly electrically connected to the central controller and transmit pressure data to the central controller and a display panel connected thereto, and the central controller controls the working status of the vacuum pump 60 and the pressure relief valve 70.

[0125] Fig.15 This is a quick cooling workflow diagram of the negative pressure chamber 50 of the refrigerator 100.

[0126] See also Fig.15 In some embodiments, the refrigerator 100 may also include the following workflow:

[0127] S1. Place the liquid to be frozen into the negative pressure chamber 511 of the negative pressure chamber 50 and close the door 52 of the negative pressure chamber 50.

[0128] Before the liquid is placed in the negative pressure chamber 511, the box door 20 and the door 52 of the negative pressure chamber 50 need to be opened in sequence. Then, the liquid is injected into the liquid container 90, and the liquid container 90 is moved into the negative pressure chamber 511, and the temperature sensor 53 in the negative pressure chamber 511 is inserted into the temperature measuring tank 93. Finally, the door 52 of the negative pressure chamber 50 is closed.

[0129] At this time, the door switch 512 on the negative pressure chamber 50 can detect whether the chamber door 52 is completely closed, and display it on the display screen to remind the user.

[0130] S2. Select a corresponding preset program to make the compressor 42 and the vacuum pump 60 work according to the preset program, so that the working temperature and working pressure in the negative pressure chamber 511 reach the preset values.

[0131] The central controller of the refrigerator 100 is provided with a plurality of preset programs, each of which can make different working temperatures and different working pressures in the negative pressure chamber 50. The preset program can be selected according to the type of liquid to be cooled.

[0132] For example, the central controller has three different quick cooling programs preset for water, carbonated beverages, and non-carbonated beverages. The user only needs to select the corresponding program on the display panel according to the liquid to be cooled to start quick cooling.

[0133] S3. When the pressure sensor 54 detects that the pressure in the negative pressure chamber 511 reaches a preset value, the vacuum pump 60 stops working.

[0134] During this process, if the vacuum pump 60 stops working after working for thirty seconds and the pressure in the negative pressure chamber 511 does not reach the preset value, the display panel will display that the vacuum pump 60 is faulty.

[0135] S4, when the temperature sensor 53 detects that the temperature of the liquid reaches a preset temperature value, the compressor 42 is controlled to stop working. Then, the pressure relief valve 70 is opened to balance the pressure in the negative pressure chamber 511.

[0136] When the pressure sensor 54 detects that the pressure in the negative pressure chamber 511 is restored, the pressure relief valve 70 is controlled to be closed, and the display panel shows that the rapid cooling is completed.

[0137] In summary, the present application provides a refrigerator 100, which is provided with a sealed negative pressure chamber 50 in the storage room of the refrigerator 100, and the negative pressure chamber 50 is provided with an evaporator that can take out heat, and a vacuum pump 60 that can extract the gas in the negative pressure chamber 50. The vacuum pump 60 can extract the gas in the negative pressure chamber 511, so that the negative pressure chamber 511 is in a negative pressure state, so as to increase the heat transfer speed of the liquid, so that the refrigerator 100 can quickly freeze beverages or foods with a large water content, so that they can quickly freeze, so that users can quickly drink frozen drinks in the hot summer, and ensure the requirement of quick refrigeration insurance of some foods.

[0138] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A refrigerator, characterized in that: include: A box body, which forms an outer shell of the refrigerator, and a storage compartment is arranged in the box body; A box door, movably arranged on the front side of the box body, and used for opening and closing the storage compartment; A negative pressure warehouse is arranged in the storage room; the negative pressure warehouse has a sealable negative pressure chamber; The refrigeration system comprises an evaporator and a compressor, wherein the evaporator is arranged in the negative pressure chamber, and the refrigerant in the evaporator can take out the heat in the negative pressure chamber to reduce the temperature in the negative pressure chamber; the compressor is arranged in the box and communicated with the evaporator; the compressor is used to compress the refrigerant; A vacuum pump is arranged outside the negative pressure chamber, one end of the vacuum pump is connected to the negative pressure chamber, and the other end is connected to the storage compartment, so that the vacuum pump can extract the gas in the negative pressure chamber to put the negative pressure chamber in a negative pressure state.

2. The refrigerator according to claim 1, characterized in that: It includes a pressure relief valve, which is arranged outside the negative pressure chamber, one end of the pressure relief valve is connected to the negative pressure chamber, and the other end is connected to the storage compartment; when the pressure relief valve is opened, the negative pressure chamber and the storage compartment are connected to each other to balance the pressure of the negative pressure chamber and the storage compartment.

3. The refrigerator according to claim 2, characterized in that: The negative pressure chamber comprises a chamber body and a chamber door; The warehouse body is arranged in the storage compartment, and the opening direction of the warehouse body is consistent with the opening direction of the storage compartment; the warehouse door is movably connected to the opening of the warehouse body to close the opening of the warehouse body to form a closed negative pressure chamber.

4. The refrigerator according to claim 3, characterized in that: A sealing member is provided on the side of the bin door facing the bin body; when the bin door is connected to the bin body, the sealing member abuts against the inner side wall of the bin body opening to seal the connection between the bin body and the bin door.

5. The refrigerator according to claim 3, characterized in that: The warehouse door is provided with a hinge, and the hinge is rotatably connected to the warehouse body; a gripping portion is recessed on a side of the warehouse door away from the warehouse body for a user to hold.

6. The refrigerator according to claim 3, characterized in that: A door switch is provided on the inner side wall of the opening of the warehouse body; when the warehouse door closes the opening of the warehouse body, the warehouse door abuts against the door switch so as to obtain the closing information of the warehouse door.

7. The refrigerator according to claim 3, characterized in that: A liquid container is also provided in the negative pressure chamber; the liquid container has a containing cavity for containing liquid; a handle is provided on the outer wall of the liquid container for the user to hold, so that the user can move the liquid container and place it in the negative pressure chamber.

8. The refrigerator according to claim 7, characterized in that: A temperature sensor is provided in the negative pressure chamber, and the temperature sensor is arranged on the side wall of the negative pressure chamber; One end of the temperature sensor located outside the negative pressure chamber is electrically connected to the refrigeration system, and one end of the temperature sensor that penetrates into the negative pressure chamber is in contact with the liquid container to detect the temperature of the liquid in the liquid container. The temperature sensor can transmit the detected temperature information to the refrigeration system, and the refrigeration system can regulate the temperature in the negative pressure chamber according to the temperature information.

9. The refrigerator according to claim 8, characterized in that: A temperature measuring groove is recessed on the outer wall of the liquid container, and a temperature measuring portion is convexly formed in the accommodating cavity. The temperature measuring groove is formed in the temperature measuring portion, and the temperature measuring groove is not connected to the accommodating cavity; when the liquid container is located in the negative pressure chamber, the temperature sensor is accommodated inside the temperature measuring groove.

10. The refrigerator according to claim 7, characterized in that: A pressure sensor is also provided in the negative pressure chamber; the pressure sensor is arranged on the inner wall of the negative pressure chamber and is electrically connected to the vacuum pump and the pressure relief valve; The pressure sensor is used to detect pressure data in the negative pressure chamber, and can transmit the pressure data to the vacuum pump and the pressure relief valve. The vacuum pump and the pressure relief valve can regulate the pressure in the negative pressure chamber according to the pressure data.

11. The refrigerator according to claim 7, characterized in that: The evaporator is arranged at the bottom of the negative pressure chamber and is spaced apart from the bottom wall of the negative pressure chamber; the liquid container is arranged above the evaporator.

12. The refrigerator according to claim 2, characterized in that: It comprises a box liner, the box liner is arranged in the box body, and the internal structure of the box liner forms the storage compartment; A hollow chamber recessed toward the storage compartment is provided on the rear side of the box; the hollow chamber is used to accommodate part of the return pipe connecting the evaporator and the compressor, as well as part of the connecting pipe connecting the vacuum pump and the pressure relief valve with the negative pressure chamber.

13. The refrigerator according to claim 12, characterized in that: A connecting column is protruding on the rear side surface of the negative pressure chamber, and one end of the connecting column away from the negative pressure chamber passes through the box and extends into the cavity; a through hole is provided in the connecting column to connect the negative pressure chamber with the outside, and the return pipe is passed through the through hole.

14. The refrigerator according to claim 13, characterized in that: A sealing plug and a locking cap are provided on the connecting column. One end of the sealing plug is arranged in the gap between the return pipe and the via hole, and the other end abuts against the end surface of the connecting column. The locking cap is connected to the connecting column and presses the sealing plug onto the connecting column.

15. The refrigerator according to claim 12, characterized in that: A partition is also provided in the box, and the partition and the inner wall of the box form a partition chamber, and the partition chamber is used to accommodate the vacuum pump and the pressure relief valve; an air outlet is opened on the partition, and the air outlet connects the partition chamber with the storage compartment.

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