Refrigeration equipment

Abstract

The utility model discloses refrigeration equipment, and relates to the technical field of refrigeration equipment, the refrigeration equipment comprises a box body and an oscillator, the box body is provided with an air duct and a storage space, the oscillator is arranged at an air outlet of the air duct and is communicated with the air duct, the oscillator comprises an inlet channel, an outlet channel and a feedback channel, the inlet channel is communicated with the air duct, and the outlet channel is communicated with the storage space. The feedback channel is communicated with the inlet channel and the outlet channel, main jet flow of the inlet channel flows to the outlet channel and enters the storage space, the feedback channel is used for promoting the main jet flow to deflect, so that oscillating jet flow is formed in the outlet channel, the flowing direction of the oscillating jet flow is continuously changed, and the air outlet direction of the air outlet can be changed. According to the technical scheme, local supercooling in the storage space is prevented, temperature distribution in the storage space is made uniform, an additional driving device does not need to be arranged, and the manufacturing cost can be saved.

Description

Technical Field

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

[0002] At present, for existing refrigeration equipment, the storage space is usually provided with an air outlet for cooling air to flow out, and the air outlet direction of the air outlet is generally fixed, resulting in local overcooling at a specific location in the storage space. In severe cases, the inner wall of the storage space may also freeze, affecting the food in the storage space. In the related art, in order to control the air outlet direction of the air outlet, a damper is usually arranged at the air outlet, and the damper is driven to move by a driving device, but this will increase the manufacturing cost. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a refrigeration device, which can change the air outlet direction of the air outlet without providing a driving device.

[0004] According to the refrigeration device of the embodiment of the utility model, it includes: a box body, which is provided with an air duct and a storage space; an oscillator, which is arranged at the air outlet of the air duct and connected with the air duct, the oscillator includes an inlet channel, an outlet channel and a feedback channel, the inlet channel is connected with the air duct, the feedback channel is connected with the inlet channel and the outlet channel, the main jet of the inlet channel flows toward the outlet channel and enters the storage space, and the feedback channel is used to cause the main jet to be deflected, so as to form an oscillating jet in the outlet channel.

[0005] The refrigeration equipment according to the embodiment of the utility model has at least the following beneficial effects: by arranging an oscillator at the air outlet of the air duct, when cold air enters the inlet channel of the oscillator, a part of the cold air forms a main jet, the main jet directly flows into the outlet channel, and a part of the cold air flows into the feedback channel to form a feedback jet. The feedback channel can guide the feedback jet to interact with the main jet, thereby changing the flow direction of the main jet, and finally forming an oscillating jet at the outlet channel of the oscillator. The flow direction of the oscillating jet changes continuously, thereby changing the air outlet direction of the air outlet, preventing local overcooling in the storage space, and making the temperature distribution in the storage space uniform. In addition, there is no need to set up an additional driving device, which can save manufacturing costs.

[0006] According to some embodiments of the utility model, the number of the inlet channels is at least two, the feedback channel is constructed as a coupling chamber, all the main jets meet in the coupling chamber, and the inner wall of the coupling chamber can reflect the fluid and act on the main jets.

[0007] According to some embodiments of the present invention, a section of the inlet channel close to the outlet channel is configured as an acceleration section, and a cross-sectional area of ​​the acceleration section decreases along a flow direction of the main jet.

[0008] According to some embodiments of the utility model, the feedback channel is capable of guiding a portion of the fluid in the outlet channel to the inlet channel, and the oscillator also includes a control throat, which is located at the connection between the feedback channel and the inlet channel, and controls the flow rate of the fluid by limiting the flow.

[0009] According to some embodiments of the utility model, the oscillator includes a Coanda cavity, which connects the inlet channel and the outlet channel. The inner wall of the Coanda cavity is constructed as a Coanda wall, so that the fluid produces an attachment and sweeping motion when contacting the Coanda wall. The number of the feedback channels is two, and the two feedback channels are respectively located on opposite sides of the Coanda cavity to respectively collect the fluids in two directions generated in the sweeping motion and guide them back to the inlet channel.

[0010] According to some embodiments of the present invention, the number of the outlet channels is two, and the flow directions of the fluids in different outlet channels are different.

[0011] According to some embodiments of the present invention, the number of the feedback channels is two, and the two feedback channels are connected to the two outlet channels in a one-to-one correspondence.

[0012] According to some embodiments of the present invention, the number of the feedback channel is one and is a closed-loop structure, and the connection point between the feedback channel and the inlet channel and the two outlet channels is located at the intersection of the two outlet channels.

[0013] According to some embodiments of the present invention, the outlet channel comprises a nozzle segment, and a cross-sectional area of ​​the nozzle segment increases along a flow direction of the oscillating jet.

[0014] According to some embodiments of the present invention, the oscillator is located at at least one of the back, side, center and top of the box.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 It is a cross-sectional view of a refrigeration device in some embodiments of the utility model;

[0018] Figure 2 A schematic diagram of the structure of an oscillator of a refrigeration device according to some embodiments of the utility model;

[0019] Figure 3 A schematic diagram of the structure of an oscillator of a refrigeration device according to some embodiments of the utility model;

[0020] Figure 4 A schematic diagram of the structure of an oscillator of a refrigeration device according to some embodiments of the utility model;

[0021] Figure 5 A schematic diagram of the structure of an oscillator of a refrigeration device according to some embodiments of the utility model;

[0022] Figure 6 A schematic diagram of the structure of an oscillator of a refrigeration device according to some embodiments of the utility model;

[0023] Figure 7 A schematic diagram of the structure of an oscillator of a refrigeration device according to some embodiments of the utility model;

[0024] Figure 8 It is a schematic diagram of the structure of the refrigeration equipment of some embodiments of the utility model;

[0025] Fig. 9 It is a schematic diagram of the structure of the refrigeration equipment of some embodiments of the utility model;

[0026] Fig.10 It is a schematic diagram of the structure of the refrigeration equipment of some embodiments of the utility model;

[0027] Fig.11 It is a schematic diagram of the structure of refrigeration equipment in some embodiments of the utility model.

[0028] Reference numerals:

[0029] Refrigeration equipment 1000;

[0030] Box body 100, air duct 110, air outlet 111, storage space 120, freezing chamber 121, temperature-changing chamber 122, refrigerating chamber 123;

[0031] Oscillator 200, inlet channel 210, acceleration section 211, first channel 212, second channel 213, outlet channel 220, nozzle section 221, third channel 222, fourth channel 223, feedback channel 230, fifth channel 231, sixth channel 232, seventh channel 233, eighth channel 234, coupling chamber 240, Coanda chamber 250, Coanda wall 251, first side wall 252, second side wall 253, control throat 260, main jet 270, oscillating jet 280, feedback jet 290, first separation bubble 291, second separation bubble 292;

[0032] Fan 300;

[0033] Door body 400. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships 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.

[0036] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] Reference Figure 1 As shown, a refrigeration device 1000 of an embodiment of the utility model is shown. The refrigeration device 1000 may specifically be a device capable of realizing a refrigeration function, such as a refrigerator, a freezer, or a freezer. The following embodiments mainly take the refrigeration device 1000 as an example of a refrigerator.

[0039] Specifically, refer to Figure 1As shown, the refrigeration device 1000 includes a box body 100 and a door body 400, the box body 100 is rotatably connected to the door body 400, the door body 400 is located on the front side of the box body 100, and an air duct 110 and a storage space 120 are provided in the box body 100. The air duct 110 is generally arranged on the back side of the box body 100 and extends in the up and down directions. Part of the air duct 110 can also be arranged on the top side of the box body 100. In some other embodiments, the air duct 110 can also be arranged on the left or right side of the box body 100. The air duct 110 is provided with an air outlet 111, and the air outlet 111 is connected to the storage space 120 in the box body 100. The refrigeration device 1000 of this embodiment can be understood as an air-cooled refrigerator. An evaporator and a fan 300 are also provided in the box body 100. The evaporator can reduce the temperature of the air flow to form cold air. The fan 300 can generate negative pressure, thereby sending the cold air flow at the evaporator into the air duct 110, and the cold air then flows into the storage space 120 through the air outlet 111 of the air duct 110, thereby achieving an air cooling effect.

[0040] Specifically, the refrigeration equipment 1000 also includes an oscillator 200, which is arranged at the air outlet 111 of the air duct 110. To briefly explain, the cold air in the air duct 110 first passes through the oscillator 200 and then flows out from the air outlet 111. The oscillator 200 can change the air outlet direction of the air outlet 111 to prevent local overcooling in the storage space 120, make the temperature distribution in the storage space 120 more uniform, and improve the refrigeration effect.

[0041] The working principle of the oscillator 200 is explained below. Specifically, the oscillator 200 includes an inlet channel 210, an outlet channel 220 and a feedback channel 230. The inlet channel 210 is connected to the air duct 110, the feedback channel 230 connects the inlet channel 210 and the outlet channel 220, and the outlet channel 220 is connected to the storage space 120. It should be explained that in this embodiment, the fluid that directly flows from the inlet channel 210 into the outlet channel 220 is called the main jet 270, the fluid flowing along the outlet channel 220 is called the oscillating jet 280, and the fluid that directly flows from the inlet channel 210 into the feedback channel 230 is called the feedback jet 290. In general, the external fluid first enters the inlet channel 210, a part of the fluid forms the main jet 270, the main jet 270 directly enters the outlet channel 220, and the other part of the fluid enters the feedback channel 230 to form the feedback jet 290. The feedback channel 230 guides the feedback jet 290 to merge with the main jet 270, so that the flow direction of the main jet 270 is deflected as a whole, thereby forming an oscillating jet 280 in the outlet channel 220. It can be understood that the main jet 270 is transformed into an oscillating jet 280 in the outlet channel 220. It should be noted that the flow direction of the oscillating jet 280 will continue to change. It should also be noted that, in general, all the fluids entering the outlet channel 220 will eventually flow into the outlet channel 220 and enter the storage space 120 through the outlet channel 220.

[0042] In the present embodiment, the oscillator 200 is applied to the air duct 110 of the refrigeration equipment 1000, so that the flow direction of the cold air flowing out of the air duct 110 can be continuously changed, thereby preventing local overcooling in the storage space 120 and making the temperature distribution in the storage space 120 uniform. In addition, the present embodiment achieves the change of the flow direction of the cold air without adding an additional driving device, which can reduce the manufacturing cost and does not require the maintenance of the driving device.

[0043] It should be noted that there are many types of oscillators 200. According to the principle of controlling the oscillation of the main jet 270, the oscillator 200 can be divided into a jet coupling oscillator, an acoustic wave oscillator, a relaxation oscillator and a Coanda sweep oscillator. Figure 2 In the embodiment, the oscillator 200 is a fluidic coupling oscillator. Figure 3 In the embodiment, the oscillator 200 is a sound wave type oscillator. Figure 4 In FIG. 2 , the oscillator 200 is a relaxation type oscillator. Figure 5 In the embodiment, the oscillator 200 is a Coanda swept oscillator. The following embodiments will provide a detailed description of each type of oscillator 200.

[0044] Reference Figure 2As shown, in some embodiments, the oscillator 200 is a jet-coupled oscillator. The oscillator 200 has two inlet channels 210, an outlet channel 220 and a coupling chamber 240. The coupling chamber 240 can be understood as one of the structural forms of the feedback channel 230. The coupling chamber 240 is used to deflect the flow direction of the main jet 270. The two inlet channels 210 are connected to the coupling chamber 240, and the extension directions of the two inlet channels 210 intersect each other. It can also be understood that the two inlet channels 210 are divided into a first channel 212 and a second channel 213. The outlet of the first channel 212 is generally oriented in the first direction, and the outlet of the second channel 213 is generally oriented in the second direction. The first direction is different from the second direction. If the external fluid only enters the first channel 212, the main jet 270 flowing out of the first channel 212 directly enters the outlet channel 220 along the first direction, and flows out of the outlet channel 220 along the first direction. If the external fluid only enters the second channel 213, the main jet 270 flowing out of the second channel 213 directly enters the outlet channel 220 along the second direction, and flows out of the outlet channel 220 along the second direction. If there are main jets 270 in both outlet channels 220 at the same time, the two main jets 270 will meet and interact in the coupling chamber 240. Specifically, the two main jets 270 will collide with each other and merge together. After a complex coupling and mixing process, coupled oscillations will be generated, which will cause the merged main jets 270 to form an oscillating jet 280 at the outlet channel 220. The oscillating jet 280 can be understood as a coupled oscillation. The flow direction of the oscillating jet 280 is constantly deflected, and the flow speed is constantly changing. It can be understood that the oscillating jet 280 is constantly swinging back and forth at the outlet channel 220.

[0045] It should be noted that the coupling chamber 240 provides a space for two or more main jets 270, so that they can meet and mix in this space. This mixing can enhance the interaction between the fluids, thereby improving the oscillation efficiency. In the coupling chamber 240, jets of different speeds and directions collide and mix with each other, converting kinetic energy into pressure energy or other forms of energy, thereby generating oscillations. After the main jet 270 hits the wall of the coupling chamber 240, part of the fluid therein is reflected back, forming a more complex flow structure with other main jets 270, further enhancing the oscillation.

[0046] The following example illustrates that when the first channel 212 has a main jet 270 and the second channel 213 does not have a main jet 270, the main jet 270 in the first channel 212 will stably flow into the inlet channel 210 along the first direction. At this time, if the main jet 270 is added to the second channel 213, the main jet 270 in the second channel 213 will interact with the main jet 270 in the first channel 212, thereby affecting the merged main jet 270 and forming an oscillating jet 280. At this time, the second channel 213 can be understood as a feedback channel 230, and the main jet 270 in the second channel 213 can be understood as a feedback jet 290, which plays a feedback role on the main jet 270, so that the oscillating jet 280 may flow into the outlet channel 220 along the second direction, or may continue to flow into the outlet channel 220 along the first direction, or may flow into the outlet channel 220 between the first direction and the second direction, depending on the strength of the main jet 270 in the second channel 213. Described from a dynamic perspective, as the main jet 270 in the second channel 213 gradually increases in strength, the oscillating jet 280 will gradually deflect from the first direction to the second direction.

[0047] When the second channel 213 has the main jet 270 and the first channel 212 does not have the main jet 270 , the situation of adding the main jet 270 into the first channel 212 is similar to the above embodiment and will not be described in detail here.

[0048] For the above embodiment, two outlet channels 220 may also be arranged, wherein one outlet channel 220 extends along the first direction and the other outlet channel 220 extends along the second direction, and the inlets of the two outlet channels 220 are connected. It can be understood that the two outlet channels 220 are V-shaped as a whole.

[0049] For the above embodiment, it is not limited thereto. The number of inlet channels 210 may be more than two, and the main jets 270 in the multiple inlet channels 210 may meet and interact with each other, thereby forming a more complex coupling and mixing process. In addition, the number of outlet channels 220 may also be more than two, and the multiple outlet channels 220 are arranged one-to-one with the multiple inlet channels 210. The oscillating jet 280 may switch between the multiple outlet channels 220, that is, the oscillating jet 280 has multiple different air outlet directions, which can further prevent local overcooling in the storage space 120. The outlets of the multiple outlet channels 220 may be arranged circumferentially around the storage space 120, so that the temperature distribution in the storage space 120 is more uniform.

[0050] Reference Figure 3As shown, in some embodiments, the oscillator 200 is an acoustic wave type oscillator. The oscillator 200 has a feedback channel 230, an inlet channel 210 and two outlet channels 220, and the feedback channel 230 is a closed loop structure, and the connection point of the feedback channel 230 is located at the intersection of the two outlet channels 220. It can be understood that the feedback channel 230 is a ring structure, the inlet of the feedback channel 230 is directly connected to the outlet of the feedback channel 230, and the flow direction of the fluid in the feedback channel 230 can be changed. The connection point between the inlet of the feedback channel 230 and the outlet of the feedback channel 230 is located at the intersection of the two outlet channels 220. Among them, one outlet channel 220 extends along the first direction, and the other outlet channel 220 extends along the second direction. When the main jet 270 in the inlet channel 210 enters the feedback channel 230, the main jet 270 will randomly enter one of the outlet channels 220. For example, the main jet 270 enters the outlet channel 220 extending along the first direction. Due to the Coanda effect, the main jet 270 adheres to the inner wall of the outlet channel 220, thereby maintaining the flow out of the outlet channel 220. The other fluids in the inlet channel 210 flow along the feedback channel 230 to form a feedback jet 290. The feedback jet 290 flows from the feedback channel 230. After flowing out of the outlet, it will interact with the main jet 270, causing the flow direction of the main jet 270 to change. The main jet 270 will be deflected to the outlet channel 220 extending along the second direction, thereby forming an oscillating jet 280 at the two outlet channels 220. The oscillating jet 280 can be repeatedly switched between the two outlet channels 220. It can be understood that during a certain period of time, the oscillating jet 280 flows out along one of the outlet channels 220, and during a certain period of time, the oscillating jet 280 flows out along the other outlet channel 220.

[0051] Reference Figure 4 As shown, in some embodiments, the oscillator 200 is a relaxation type oscillator. The oscillator 200 has an inlet channel 210, two outlet channels 220 and two feedback channels 230. The flow directions of the fluids in the two outlet channels 220 are different. It can be understood that the extension directions of the two outlet channels 220 are different from each other, one of the outlet channels 220 extends along a first direction, and the other outlet channel 220 extends along a second direction, and the first direction is different from the second direction. For example, the two outlet channels 220 form a V-shaped whole. In addition, the two feedback channels 230 are connected to the two outlet channels 220 in a one-to-one correspondence.

[0052] Specifically, for ease of understanding, refer to Figure 4As shown, the two outlet channels 220 are divided into a third channel 222 and a fourth channel 223, and the two feedback channels 230 are divided into a fifth channel 231 and a sixth channel 232. The outlet of the third channel 222 is arranged toward the first direction, the outlet of the fourth channel 223 is arranged toward the second direction, the fifth channel 231 is connected to the inlet channel 210 and the third channel 222, and the sixth channel 232 is connected to the inlet channel 210 and the fourth channel 223. When the main jet 270 passes through the inlet channel 210, it will randomly enter the third channel 222 or the fourth channel 223. For example, when the main jet 270 enters the third channel 222, due to the Coanda effect, the main jet 270 will adhere to the inner wall of the third channel 222 and keep flowing into the third channel 222. Then, the fluid in the other part of the inlet channel 210 will flow into the fifth channel 231, thereby forming a feedback jet 290. The fifth channel 231 will change the flow direction of the feedback jet 290, so that the feedback jet 290 merges with the previous main jet 270. Since the feedback jet 290 directly The impact of the main jet 270 will cause the flow direction of the main jet 270 to be deflected, so that the main jet 270 flows into the fourth channel 223. Due to the Coanda effect, the main jet 270 will adhere to the inner wall of the fourth channel 223 and keep flowing into the fourth channel 223. At this time, the fluid in other parts of the inlet channel 210 will enter the sixth channel 232 from the fourth channel 223, thereby forming a feedback jet 290. The feedback jet 290 in the sixth channel 232 will merge with the previous main jet 270, so that the main jet 270 is deflected into the third channel 222, and the cycle is repeated. It can be understood that an oscillating jet 280 is formed in the third channel 222 and the fourth channel 223. The oscillating jet 280 will flow out of the third channel 222 for a period of time and will flow out of the fourth channel 223 for a period of time, so that the flow direction of the oscillating jet 280 is constantly changing, achieving an oscillation effect.

[0053] Reference Figure 5As shown, in some embodiments, the oscillator 200 is a coanda swept oscillator. The oscillator 200 has an inlet channel 210, an outlet channel 220 and two feedback channels 230. The oscillator 200 also includes a coanda cavity 250, the coanda cavity 250 connects the inlet channel 210 and the outlet channel 220, the feedback channel 230 is also connected to the coanda cavity 250, the inner wall of the coanda cavity 250 is configured as a coanda wall 251, and the two feedback channels 230 are respectively located on opposite sides of the coanda cavity 250. When the main jet 270 in the inlet channel 210 enters the Coanda chamber 250, the main jet 270 will contact the Coanda wall 251. Due to the Coanda effect, the main jet 270 adheres to the Coanda wall 251. It can also be understood that the main jet 270 flows along the Coanda wall 251. The main jet 270 will directly enter the outlet channel 220, and the fluid in the other part of the inlet channel 210 will flow into the feedback channel 230, thereby forming a feedback jet 290. The feedback channel 230 guides the feedback jet 290 to the intersection of the inlet channel 210 and the Coanda chamber 250, so that the feedback jet 290 returns to the Coanda chamber 250. The feedback jet 290 The feedback jet 290 will swirl in the Coanda chamber 250 to form a separation bubble, which can be understood as a vortex structure. The feedback jet 290 will continuously fill the separation bubble, making the separation bubble larger. The larger the separation bubble, the more it will squeeze the main jet 270, causing the main jet 270 to separate from the Coanda wall 251, and the main jet 270 will swing from one side of the inner wall of the Coanda chamber 250 to the other side of the inner wall of the Coanda chamber 250, so that the main jet 270 adheres to the inner wall on the other side of the Coanda chamber 250. It can be understood that the main jet 270 swings back and forth in the Coanda chamber 250, generating a sweeping motion, thereby forming an oscillating jet 280 with a constantly changing flow direction at the outlet channel 220.

[0054] Specifically, for ease of understanding, refer to Figure 5As shown, the two feedback channels 230 are divided into a seventh channel 233 and an eighth channel 234. The Coanda wall 251 includes a first side wall 252 and a second side wall 253 that are arranged opposite to each other. The seventh channel 233 is closer to the first side wall 252, and the eighth channel 234 is closer to the second side wall 253. When the main jet 270 enters the Coanda chamber 250 from the inlet channel 210, due to the Coanda effect, the main jet 270 randomly adheres to the first side wall 252 or the second side wall 253 and flows. For example, the main jet 270 adheres to the second side wall 253 and flows, and the main jet 270 directly enters the outlet channel 220 and flows out of the outlet channel 220 along the second direction. The fluid in the other parts of the inlet channel 210 will flow into the seventh channel 233 and the eighth channel 234, thereby forming a feedback jet 290. The seventh channel 233 and the eighth channel 234 guide the feedback jet 290 to the Coanda chamber 2 50 and the outlet channel 220, the feedback jet 290 in the seventh channel 233 forms a first separation bubble 291 in the Coanda chamber 250. The first separation bubble 291 is relatively large and is located between the first side wall 252 and the main jet 270, forcing the main jet 270 to adhere to the second side wall 253. At this time, since the main jet 270 is closer to the eighth channel 234, most of the main jet 270 will flow into the eighth channel 234, so that the feedback jet 290 in the eighth channel 234 is gradually strengthened, and the feedback jet 290 in the seventh channel 233 is gradually weakened. Figure 6 As shown, next, the feedback jet 290 in the eighth channel 234 will form a second separation bubble 292 in the Coanda chamber 250, and the second separation bubble 292 is located between the second side wall 253 and the main jet 270. As the feedback jet 290 in the eighth channel 234 gradually increases, the second separation bubble 292 will gradually increase. As the feedback jet 290 in the seventh channel 233 gradually decreases, the first separation bubble 291 will gradually decrease. The second separation bubble 292 will force the main jet 270 to break away from the second side wall 253 and swing toward the first side wall 252, that is, the main jet 270 gradually deflects from the second direction to the first direction, generating a sweeping motion. Figure 7 As shown, eventually, as the second separation bubble 292 becomes larger, the main jet 270 will adhere to the first side wall 252, and the main jet 270 will flow out of the outlet channel 220 directly in the first direction, thereby changing the flow direction of the main jet 270. At this time, the fluid in other parts of the inlet channel 210 will flow into the seventh channel 233 and the eighth channel 234 to form a feedback jet 290, making the second separation bubble 292 smaller and the first separation bubble 291 larger. The above process is repeated continuously, thereby forming an oscillating jet 280 with a constantly changing flow direction in the outlet channel 220. It can be understood that the oscillating jet 280 constantly swings between the first direction and the second direction.

[0055] It is understandable that, referring to Figure 4and Figure 5 As shown, in some embodiments, a section of the inlet channel 210 close to the outlet channel 220 is configured as an acceleration section 211. Along the flow direction of the main jet 270, the cross-sectional area of ​​the acceleration section 211 gradually decreases. When the fluid in the inlet channel 210 passes through the acceleration section 211, the flow rate of the fluid gradually decreases. According to Bernoulli's principle, the flow velocity of the fluid in the inlet channel 210 can be increased, which plays an accelerating role, and is conducive to the main jet 270 to quickly pass through the inlet channel 210 and enter the outlet channel 220, and the flow is relatively smooth. In addition, the formed feedback jet 290 can also be accelerated, and the feedback effect on the main jet 270 is better, which is conducive to the deflection of the flow direction of the main jet 270. Specifically, the cross section of the acceleration section 211 can be circular or elliptical, and the acceleration section 211 can be a trumpet-shaped structure.

[0056] It is understandable that, referring to Figure 3 and Figure 4 As shown, in some embodiments, the oscillator 200 further includes a control throat 260, which is located at the connection between the feedback channel 230 and the inlet channel 210. Along the flow direction of the feedback jet 290, the cross-sectional area of ​​the control throat 260 gradually decreases, and the flow rate of the feedback jet 290 passing through the control throat 260 gradually decreases. The flow rate of the feedback jet 290 can be controlled by the flow limiting effect, and according to the Bernoulli principle, the flow velocity of the feedback jet 290 can be increased, and the feedback effect of the feedback jet 290 on the main jet 270 can be increased, which is conducive to the deflection of the flow direction of the main jet 270. Specifically, the cross-section of the control throat 260 can be circular or elliptical, etc. When the number of the feedback channels 230 is multiple, the number of the control throats 260 is also multiple, and the multiple control throats 260 are arranged one-to-one with the multiple feedback channels 230.

[0057] It is understandable that, referring to Figure 2 and Figure 5 As shown, in some embodiments, the outlet channel 220 includes a nozzle segment 221, and the cross-sectional area of ​​the nozzle segment 221 gradually increases along the flow direction of the oscillating jet 280, which can expand the outlet angle of the outlet channel 220, will not hinder the flow of the oscillating jet 280, and is conducive to the continuous deflection of the flow direction of the oscillating jet 280, which can expand the deflection angle of the oscillating jet 280, and can make the area swept by the oscillating jet 280 larger, so that the temperature distribution in the storage space 120 is more uniform. Specifically, the cross section of the nozzle segment 221 can be circular or elliptical, and the nozzle segment 221 can be a trumpet-shaped structure.

[0058] It should be noted that, in some embodiments, the oscillator 200 may be a separate structure, and the oscillator 200 is installed at the air outlet 111 of the air duct 110. In some other embodiments, the oscillator 200 may also be constructed by a part of the inner wall of the air duct 110, which can be understood as the oscillator 200 and the air duct 110 are an integrated structure, which can be specifically manufactured by an integrated molding process.

[0059] It can be understood that, for the oscillator 200 of the above embodiment, the oscillator 200 can be arranged at at least one position of the back, side, center and top of the box 100 .

[0060] Reference Figure 1 As shown, in some embodiments, the storage space 120 includes a freezer chamber 121, a temperature-changing chamber 122 and a refrigerator chamber 123 which are arranged in sequence from bottom to top, and the air duct 110 extends in the up and down directions and passes through the freezer chamber 121, the temperature-changing chamber 122 and the refrigerator chamber 123 in sequence, and the cold air in the air duct 110 flows approximately from bottom to top, and the air duct 110 has a plurality of air outlets 111, and at least one air outlet 111 is respectively provided in the freezer chamber 121, the temperature-changing chamber 122 and the refrigerator chamber 123, and the air outlet 111 can be located at the rear side, the upper side, the left side or the right side inside the box body 100, and the fan 300 can be arranged in the freezer chamber 121, and the fan 300 delivers air from bottom to top.

[0061] Reference Figure 8 and Fig.10 As shown, taking the oscillator 200 as a jet coupling type oscillator or a Coanda sweep type oscillator as an example, the number of oscillators 200 is multiple, and the multiple oscillators 200 are arranged in the up and down direction. The multiple oscillators 200 can be arranged in the freezing chamber 121, the temperature-changing chamber 122 and the refrigerating chamber 123 respectively. The multiple oscillators 200 are arranged one by one corresponding to the multiple air outlets 111, and the inlet channels 210 of the multiple oscillators 200 are directly connected to the air duct 110. It can be understood that the multiple oscillators 200 are connected in parallel to the air duct 110, and the outlet channels 220 of the multiple oscillators 200 are connected one by one corresponding to the multiple air outlets 111. In some other embodiments, the multiple oscillators 200 can also be connected in series, that is, the oscillating jet flowing out of the outlet channel 220 of the oscillator 200 directly flows into the inlet channel 210 of the next oscillator 200. Since the air duct 110 is arranged on the back side of the box 100, the oscillator 200 can also be arranged on the back side of the box 100, which can reduce the occupied space. The cold air passes through the oscillator 200 and then flows out from the air outlet 111 of the air duct 110, so that the air outlet direction of the air outlet 111 is constantly changing.

[0062] In some embodiments, the oscillator 200 is arranged on the back side of the housing 100. When the fan 300 is located below the oscillator 200, the airflow mainly passes through the oscillator 200 from bottom to top. The oscillator 200 can be arranged vertically. Specifically, the inlet of the inlet channel 210 of the oscillator 200 is arranged downward, and the outlet of the outlet channel 220 of the oscillator 200 is arranged upward. The cold air flowing out of the outlet channel 220 can swing back and forth from back to front or from left to right. Alternatively, when the fan 300 is located above the oscillator 200, the airflow mainly passes through the oscillator 200 from top to bottom, the inlet of the inlet channel 210 of the oscillator 200 is arranged upward, and the outlet of the outlet channel 220 of the oscillator 200 is arranged downward. In some other embodiments, the oscillator 200 can also be arranged horizontally. Specifically, the inlet of the inlet channel 210 of the oscillator 200 is arranged backward, and the outlet of the outlet channel 220 of the oscillator 200 is arranged forward.

[0063] Reference Figure 1 As shown, for the refrigerator compartment 123, part of the air duct 110 can extend to the top of the refrigerator compartment 123, and the cold air in this part of the air duct 110 flows from the back to the front. The air duct 110 is also provided with an air outlet 111 arranged downward. The air outlet 111 is located at the front of the refrigerator compartment 123, and the air can be discharged downward at the front side of the refrigerator compartment 123, so that the cold air evenly covers the surface of the food, and the air cooling effect is better. Fig. 9 and Fig.11 As shown, for this part of the air duct 110, at the top position of the cold storage room 123, the oscillator 200 is arranged horizontally, which can reduce the space occupied in the height direction. The inlet of the inlet channel 210 of the oscillator 200 is set backward, and the outlet of the outlet channel 220 of the oscillator 200 is set forward, so that the air outlet direction of the air outlet 111 can be continuously changed, which can prevent local overcooling and make the temperature distribution in the cold storage room 123 more uniform.

[0064] It should be noted that, in some other embodiments, the storage space 120 may include only the freezer compartment 121 or the refrigerator compartment 123, or may include only the freezer compartment 121 and the refrigerator compartment 123, which is not limited herein.

[0065] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Refrigeration equipment, characterized in that include: The box body is provided with air duct and storage space; An oscillator is arranged at the air outlet of the air duct and is connected to the air duct. The oscillator includes an inlet channel, an outlet channel and a feedback channel. The inlet channel is connected to the air duct, and the feedback channel is connected to the inlet channel and the outlet channel. The main jet of the inlet channel flows toward the outlet channel and enters the storage space. The feedback channel is used to cause the main jet to be deflected, thereby forming an oscillating jet in the outlet channel.

2. The refrigeration equipment according to claim 1, characterized in that: The number of the inlet channels is at least two, the feedback channel is configured as a coupling chamber, all the main jets meet in the coupling chamber, and the inner wall of the coupling chamber can reflect the fluid and act on the main jets.

3. The refrigeration equipment according to claim 1, characterized in that: A section of the inlet channel close to the outlet channel is configured as an acceleration section, and a cross-sectional area of ​​the acceleration section decreases along a flow direction of the main jet.

4. The refrigeration equipment according to claim 1, characterized in that: The feedback channel can guide a portion of the fluid in the outlet channel to the inlet channel. The oscillator also includes a control throat, which is located at the connection between the feedback channel and the inlet channel and controls the flow rate of the fluid through a flow limiting effect.

5. The refrigeration equipment according to claim 1, characterized in that: The oscillator includes a Coanda cavity, which connects the inlet channel and the outlet channel. The inner wall of the Coanda cavity is constructed as a Coanda wall, so that the fluid produces an attachment and sweeping motion when contacting the Coanda wall. The number of the feedback channels is two, and the two feedback channels are respectively located on opposite sides of the Coanda cavity to respectively collect the fluids in two directions generated in the sweeping motion and guide them back to the inlet channel.

6. The refrigeration device according to claim 1, characterized in that: The number of the outlet channels is two, and the flow directions of the fluids in different outlet channels are different.

7. The refrigeration device according to claim 6, characterized in that: The number of the feedback channels is two, and the two feedback channels are connected to the two outlet channels in a one-to-one correspondence.

8. The refrigeration device according to claim 6, characterized in that: The number of the feedback channel is one, and it is a closed-loop structure. The connection point between the feedback channel, the inlet channel, and the two outlet channels is located at the intersection of the two outlet channels.

9. The refrigeration device according to claim 1, characterized in that: The outlet channel comprises a nozzle segment, and the cross-sectional area of ​​the nozzle segment increases along the flow direction of the oscillating jet.

10. The refrigeration device according to claim 1, characterized in that: The oscillator is located at at least one of the back, side, center and top of the box.

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