A premix structure, air duct assembly and refrigeration apparatus
By setting a premixing structure at the front end of the evaporator air inlet, the refrigeration return air and the freezing return air are mixed and frosted. The frost is then melted by the heating chamber, which solves the problem of easy frost formation on the evaporator surface in air-cooled refrigerators and achieves energy-saving and efficient cooling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TCL HOME APPLIANCES (HEFEI) CO LTD
- Filing Date
- 2024-01-23
- Publication Date
- 2026-07-10
AI Technical Summary
In air-cooled refrigerators, the temperature and moisture content of the return air are relatively high, which makes the evaporator surface prone to frost formation, affecting the cooling efficiency.
A premixing structure is set at the front end of the evaporator air inlet, where refrigerated return air and frozen return air are mixed and frosted. The frost is melted by the heating chamber, which reduces the water vapor content and temperature of the mixed gas and prevents frost from forming on the evaporator surface.
It reduces the frost buildup rate on the evaporator surface, saves energy, and improves the efficiency of refrigeration equipment.
Smart Images
Figure CN117739598B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of refrigerator technology, and particularly relates to a premixed structure, air duct assembly and refrigeration equipment. Background Technology
[0002] In a frost-free refrigerator, the circulating air enters the refrigerator compartment and the freezer compartment through the refrigerator air duct and the freezer air duct respectively, and cools the food in the compartment before flowing to the evaporator.
[0003] The refrigerated return air flowing from the refrigerated compartment to the evaporator has a temperature of approximately 5°C and a moisture content of approximately 5.475 g / kg, both relatively high. Conversely, the refrigerated return air flowing from the freezer compartment to the evaporator has a temperature of approximately -18°C and a moisture content of approximately 0.777 g / kg, both relatively low. Therefore, when the refrigerated return air entering the evaporator encounters the refrigerated return air entering the evaporator, the refrigerated return air condenses on the evaporator surface, causing frost to form and affecting the evaporator's cooling efficiency. Summary of the Invention
[0004] This application provides a premixed structure, air duct assembly, and refrigeration equipment to solve the problem that the temperature and moisture content of the refrigeration return air in existing air-cooled refrigerators are high, and that frost easily forms on the evaporator surface when the refrigeration return air meets the freezing return air.
[0005] This application provides a premixed structure applied to a refrigerator, the refrigerator including an evaporator, the premixed structure comprising:
[0006] case;
[0007] The housing is provided with a premixing chamber, and the housing is provided with a first refrigerated return air inlet, a frozen return air inlet and a first air outlet communicating with the premixing chamber; frozen return air and at least part of refrigerated return air enter the premixing chamber through the frozen return air inlet and the refrigerated return air inlet respectively to form a mixed gas; water vapor in the refrigerated return air is cooled and frosted in the premixing chamber; the mixed gas flows to the evaporator through the first air outlet.
[0008] The housing also includes a heating chamber adjacent to the premixing chamber. The housing is provided with a second refrigerated return air inlet and a second air outlet communicating with the heating chamber. At least part of the refrigerated return air enters the heating chamber through the second refrigerated return air inlet, heats the premixing chamber to melt the frost inside the premixing chamber, and then flows to the evaporator through the second air outlet.
[0009] Optionally, the lower end of the housing in the direction of gravity is provided with a drain hole that communicates with the heating chamber to drain the condensate brought by the refrigeration return air in the heating chamber.
[0010] Optionally, the premixing chamber is disposed at the lower end of the heating chamber along the direction of gravity, and the housing is provided with a communication port connecting the premixing chamber and the heating chamber. The condensate in the premixing chamber enters the heating chamber through the communication port and flows to the drain hole.
[0011] Optionally, the housing includes a guide surface surrounding the bottom of the heating chamber in the direction of gravity, and the drain hole extends through the bottom of the guide surface, the guide surface directing the condensate in the heating chamber to the drain hole.
[0012] Optionally, a baffle is provided at one end of the premixing chamber near the first air outlet, and the first refrigerated return air inlet and the frozen return air inlet are both located on the side of the baffle away from the first air outlet;
[0013] The baffle partially blocks the first air outlet to prolong the mixing time of the refrigerated return air and the frozen return air in the premixing chamber.
[0014] This application embodiment also provides an air duct assembly, including:
[0015] The refrigeration air duct connects to the evaporator;
[0016] The premixed structure described above is disposed within the refrigeration duct, with the first air outlet facing the evaporator;
[0017] The refrigerated air duct is connected to both the first refrigerated return air inlet and the second refrigerated return air inlet.
[0018] Optionally, the housing is provided with several third air outlets on the side near the evaporator;
[0019] Part of the refrigerated return air enters the evaporator through the premixing chamber, and part of the refrigerated return air enters the evaporator through the third air outlet.
[0020] Optionally, a baffle is provided at one end of the premixing chamber near the first air outlet, and the first refrigerated return air inlet and the frozen return air inlet are both located on the side of the baffle away from the first air outlet;
[0021] The housing is also provided with a third refrigerated return air inlet that connects the premixing chamber and the refrigerated air duct. The third refrigerated return air inlet is located between the baffle and the first air outlet.
[0022] Optionally, the end of the refrigeration air duct away from the evaporator is provided with an air inlet;
[0023] The housing also includes a guide plate extending from the side of the refrigerated return air inlet near the evaporator toward the air inlet, the guide plate being used to guide the refrigerated return air in the refrigerated air duct to the premixing chamber.
[0024] This application also provides a refrigeration device, including:
[0025] Evaporator;
[0026] The air duct assembly described above is connected to the evaporator.
[0027] The premixed structure provided in this application embodiment has a premixing chamber for mixing refrigerated return air and frozen return air before entering the evaporator. This allows water vapor in the refrigerated return air to be affected by the low temperature of the frozen return air and frost to form in the premixing chamber. Therefore, the water vapor content in the mixed gas formed by mixing the refrigerated return air and frozen return air is reduced. The mixed gas with less water vapor content is less likely to frost after entering the evaporator, thus avoiding the frost formation on the surface of the evaporator caused by the high temperature and water vapor content of the refrigerated return air mixing with the low temperature of the frozen return air.
[0028] This involves setting a premixing structure at the air inlet of the evaporator, which allows the refrigerated return air and the frozen return air to mix and frost in advance. This means that the frosting action of the refrigerated return air is carried out in the premixing chamber, thereby avoiding the frosting action of the refrigerated return air occurring inside the evaporator and reducing the frosting rate on the evaporator surface.
[0029] Meanwhile, since the wall of the heating chamber is adjacent to the wall of the premixing chamber, the temperature of the wall of the heating chamber will theoretically be lower than the temperature of the refrigerated return air. After the refrigerated return air enters the heating chamber through the second refrigerated return air inlet, it exchanges heat with the wall of the heating chamber, heating the wall of the heating chamber. The wall of the heating chamber exchanges heat with the wall of the premixing chamber, thereby heating the wall of the premixing chamber, causing the frost in the premixing chamber to melt. The defrosting action of the premixing chamber is achieved using existing energy, without the need for additional energy supply, saving costs. At the same time, because there is heat exchange in the heating chamber, the temperature of the refrigerated return air flowing out of the heating chamber is lower than the temperature of the refrigerated return air entering the heating chamber. The cooled refrigerated return air will also reduce the frost rate of the evaporator when it enters the evaporator. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.
[0031] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.
[0032] Figure 1This is a first structural schematic diagram of the premixed structure provided in an embodiment of this application.
[0033] Figure 2 This is a schematic diagram of the second structure of the premixed structure provided in the embodiments of this application.
[0034] Figure 3 A top view of the premixed structure provided in an embodiment of this application.
[0035] Figure 4 for Figure 3 Sectional view at point AA.
[0036] Figure 5 for Figure 3 Sectional view at point BB.
[0037] Figure 6 This is a schematic diagram of the structure of the refrigeration room and the freezer room of the refrigeration equipment provided in the embodiments of this application.
[0038] Figure 7 A schematic diagram of the structure of the freezer compartment and the refrigeration return air foam of the refrigeration equipment provided in the embodiments of this application.
[0039] Figure 8 This is a first structural schematic diagram of the refrigeration air duct and the refrigerated return air foam of the refrigeration equipment provided in the embodiments of this application.
[0040] Figure 9 This is a second structural schematic diagram of the refrigeration duct and the refrigerated return air foam of the refrigeration equipment provided in the embodiments of this application.
[0041] Figure 10 This is a schematic diagram of the assembly of the refrigeration duct and premixed structure of the refrigeration equipment provided in the embodiments of this application.
[0042] Explanation of reference numerals in the attached figures:
[0043] 1. Shell;
[0044] 11. Premixing chamber; 111. First refrigerated return air inlet; 112. Freezing return air inlet; 113. First air outlet; 114. Third refrigerated return air inlet;
[0045] 12. Heating chamber; 121. Second refrigerated return air inlet; 122. Second air outlet; 123. Drain hole; 124. Guide surface;
[0046] 13. Connecting port; 14. Baffle; 15. Third air outlet; 16. Deflector plate; 17. Guide plate;
[0047] 2. Air inlet;
[0048] 3. Refrigeration air duct;
[0049] 4. Evaporator;
[0050] 5. Freezer compartment;
[0051] 6. Cold storage room;
[0052] 7. Refrigerated return air foam. Detailed Implementation
[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0054] This application provides a premixed structure, air duct assembly, and refrigeration equipment to solve the problem that the temperature and moisture content of the refrigeration return air in existing air-cooled refrigerators are high, and that frost easily forms on the evaporator surface when the refrigeration return air meets the freezing return air. The following description is in conjunction with the accompanying drawings.
[0055] The premixed structure provided in this application embodiment is applied to a refrigerator, which includes an evaporator 4, and the premixed structure includes a housing 1. Please refer to... Figures 1 to 5 , Figure 1 This is a first structural schematic diagram of the premixed structure provided in an embodiment of this application. Figure 2 This is a schematic diagram of the second structure of the premixed structure provided in the embodiments of this application. Figure 3 This is a top view of the premixed structure provided in the embodiments of this application. Figure 4 for Figure 3 Sectional view at point AA. Figure 5 for Figure 3 Cross-sectional view at point BB. The premixed structure housing 1 has a premixing chamber 11 inside. The housing 1 has a first refrigerated return air inlet 111, a frozen return air inlet 112, and a first air outlet 113 communicating with the premixing chamber 11. Frozen return air and at least part of the refrigerated return air enter the premixing chamber 11 through the frozen return air inlet 112 and the refrigerated return air inlet, respectively, to form a mixed gas. The water vapor in the refrigerated return air is cooled and frosted in the premixing chamber 11. The mixed gas flows to the evaporator 4 through the first air outlet 113. The housing 1 also has a heating chamber 12 adjacent to the premixing chamber 11. The housing 1 has a second refrigerated return air inlet 121 and a second air outlet 122 communicating with the heating chamber 12. At least part of the refrigerated return air enters the heating chamber 12 through the second refrigerated return air inlet 121 to heat the premixing chamber 11 to melt the frost in the premixing chamber 11. Then, it flows to the evaporator 4 through the second air outlet 122.
[0056] The premixed structure provided in this application embodiment has a premixing chamber 11 for mixing refrigerated return air and frozen return air before entering the evaporator 4. This allows water vapor in the refrigerated return air to be affected by the low temperature of the frozen return air and thus frost in the premixing chamber 11. As a result, the water vapor content in the mixed gas formed by mixing the refrigerated return air and the frozen return air is reduced. The mixed gas with less water vapor content is less likely to frost after entering the evaporator 4. This avoids the situation where the surface of the evaporator 4 frosts due to the high temperature and water vapor content of the refrigerated return air mixing with the low temperature of the frozen return air.
[0057] That is, by setting a premixing structure at the air inlet of the evaporator 4, the refrigeration return air and the freezing return air are mixed and frosted in advance, so that the frosting action of the refrigeration return air is moved to the premixing chamber 11, thereby avoiding the frosting action of the refrigeration return air from occurring in the evaporator 4 and reducing the frosting rate on the surface of the evaporator 4.
[0058] Meanwhile, since the wall of the heating chamber 12 is adjacent to the wall of the premixing chamber 11, the temperature of the wall of the heating chamber 12 will theoretically be lower than the temperature of the refrigerated return air. After the refrigerated return air enters the heating chamber 12 through the second refrigerated return air inlet 121, it exchanges heat with the wall of the heating chamber 12 to heat the wall of the heating chamber 12. The wall of the heating chamber 12 exchanges heat with the wall of the premixing chamber 11, thereby heating the wall of the premixing chamber 11 and melting the frost in the premixing chamber 11. The defrosting action of the premixing chamber 11 is achieved using existing energy without the need for additional energy supply, saving costs. At the same time, since there is heat exchange in the heating chamber 12, the temperature of the refrigerated return air flowing out of the heating chamber 12 is lower than the temperature of the refrigerated return air entering the heating chamber 12. When the cooled refrigerated return air enters the evaporator 4, it will also reduce the frosting rate of the evaporator 4.
[0059] Optionally, the lower end of the housing 1 in the direction of gravity is provided with a drain hole 123 communicating with the heating chamber 12 to drain the condensate brought by the refrigerated return air in the heating chamber 12. After the refrigerated return air exchanges heat with the cavity wall of the heating chamber 12, it releases heat. The water vapor carried in the refrigerated return air liquefies into condensate and is discharged through the drain hole 123 at the bottom of the heating chamber 12. By setting the drain hole 123, the condensate is discharged, avoiding the accumulation of liquid in the heating chamber 12, which would affect the heating effect.
[0060] Optionally, there may be multiple drain holes 123, and the number of drain holes 123 is not further limited here.
[0061] Optionally, the premixing chamber 11 is positioned at the lower end of the heating chamber 12 along the direction of gravity. The housing 1 has a connecting port 13 that connects the premixing chamber 11 and the heating chamber 12. Condensate in the premixing chamber 11 enters the heating chamber 12 through the connecting port 13 and flows to the drain hole 123. Since the refrigerated return air and cooling return air in the premixing chamber 11 are mixed, the water vapor in the higher-temperature refrigerated return air condenses into condensate under the influence of the lower-temperature cooling return air. By connecting the heating chamber 12 and the premixing chamber 11 through the connecting port 13, the condensate in the premixing chamber 11 is discharged through the heating chamber 12 from the drain hole 123 at the bottom of the heating chamber 12. In other words, one drain hole 123 simultaneously performs the drainage functions of both the heating chamber 12 and the premixing chamber 11.
[0062] Meanwhile, since the connecting port 13 connects the heating chamber 12 and the premixing chamber 11, the gases in the heating chamber 12 and the premixing chamber 11 can be exchanged. That is, the refrigerated return air in the heating chamber 12 can enter the premixing chamber 11 through the connecting port 13 after passing through the heating chamber 12, and enter the evaporator 4 from the first air outlet 113 of the premixing chamber 11. At this time, the connecting port 13 and the second air outlet 122 can be one port, or the connecting port 13 and the second air outlet 122 can be two different ports. Therefore, at this time, the refrigerated return air flowing out of the heating chamber 12 and the mixed gas flowing out of the premixing chamber 11 both have two paths to enter the evaporator 4. One is to enter the evaporator 4 through the first air outlet 113 of the premixing chamber 11, and the other is to enter the evaporator 4 through the second air outlet of the heating chamber 12. This increases the paths for the mixed gas and the refrigerated return air to enter the evaporator 4, thereby improving the return air efficiency of the evaporator 4.
[0063] Optionally, the housing 1 includes a guide surface 124 surrounding the bottom of the heating chamber 12 in the direction of gravity, and a drain hole 123 penetrating the bottom of the guide surface 124. The guide surface 124 guides the condensate in the heating chamber 12 to the drain hole 123. By providing a guide surface 124 at the bottom of the heating chamber 12, the condensate in the heating chamber 12 is guided, preventing the condensate from remaining in the heating chamber 12 due to its shape and being unable to drain.
[0064] Optionally, the bottom of the housing 1 is provided with an arc-shaped guide groove. The cross-sectional area of the guide groove gradually increases from bottom to top along the direction of gravity. The guide groove is connected to the heating cavity 12, and the side of the guide groove facing the heating cavity 12 is the guide surface 124.
[0065] Optionally, a baffle 14 is provided at one end of the premixing chamber 11 near the first air outlet 113. The first refrigerated return air inlet 111 and the refrigerated return air inlet 112 are both located on the side of the baffle 14 away from the first air outlet 113. The baffle 14 partially blocks the first air outlet 113 to prolong the mixing time of the refrigerated return air and the refrigerated return air in the premixing chamber 11. By blocking part of the airflow at the first air outlet 113 with the baffle 14, the mixing time of the gas in the premixing chamber 11 is prolonged, thereby allowing the refrigerated return air and the refrigerated return air in the premixing chamber 11 to be fully mixed, so that the water vapor in the refrigerated return air is condensed into condensate and discharged through the drain hole 123 of the heating chamber 12. This reduces the probability of frost forming on the surface of the evaporator 4 after the refrigerated return air passes through the evaporator 4. At the same time, a certain gap is left between the baffle 14 and the shell 1 to expose part of the first air outlet 113, so as to realize the function of mixed gas entering the evaporator 4. The overall structure is simple and easy to manufacture.
[0066] Optionally, the baffle 14 can be an arc-shaped plate to increase the shielding area of the baffle 14 for the mixed gas. The arching direction of the arc-shaped plate is not further limited here. For example, the arc-shaped plate can arch towards the first air outlet 113, or it can arch away from the first air outlet 113.
[0067] Optionally, the baffle 14 can be inserted into the housing 1. The housing 1 has at least one pair of insertion holes spaced apart, and the baffle 14 has at least one pair of extended insertion parts. The baffle 14 is inserted into at least one pair of insertion holes of the housing 1 through at least one pair of insertion parts, which not only fixes the baffle 14, but also leaves a gap between the baffle 14 and the housing 1 to connect the premixing chamber 11 and the evaporator 4. This gap is the actual air outlet of the first air outlet 113.
[0068] Optionally, there may be a pair of refrigerated return air inlets 112, which are arranged opposite each other on both sides of the housing 1 to increase the efficiency of refrigerated return air entering the premixing chamber 11. The first air outlet 113 may be arranged on the top of the housing 1 along the direction of gravity, and the pair of refrigerated return air inlets 112 are arranged on the side of the housing 1. The first refrigerated return air inlet 111 is also arranged on the side of the housing 1 to adapt to the flow direction of the mixed gas in the premixing chamber 11, shorten the path of the mixed gas out of the premixing chamber 11, and increase the speed at which the mixed gas enters the evaporator 4.
[0069] Optionally, the second air outlet 122 may also have a pair and be arranged opposite each other on both sides of the housing 1 to increase the efficiency of the refrigerated return air flowing out of the heating chamber 12 into the evaporator 4.
[0070] This application also provides an air duct assembly; please refer to [link / reference]. Figures 8 to 10 , Figure 8 This is a first structural schematic diagram of the refrigeration air duct and the refrigeration return air foam 7 of the refrigeration equipment provided in the embodiments of this application. Figure 9 This is a second structural schematic diagram of the refrigeration air duct and the refrigeration return air foam 7 of the refrigeration equipment provided in the embodiments of this application. Figure 10 This is a schematic diagram of the assembly of the refrigeration duct and premixed structure of the refrigeration equipment provided in this application embodiment. The duct assembly includes a refrigeration duct, the premixed structure as described above, and a refrigeration duct 3. One end of the refrigeration duct is connected to the evaporator 4, and the other end is connected to the refrigeration duct; the premixed structure as described above is disposed in the refrigeration duct, and the first air outlet 113 is disposed facing the evaporator 4; one end of the refrigeration duct 3 is connected to both the first refrigeration return air inlet 111 and the second refrigeration return air inlet 121, and the other end is connected to the refrigeration compartment 6.
[0071] That is, the premixing structure is set in the refrigeration channel. After the refrigeration return air enters the refrigeration air duct, part of the refrigeration return air directly enters the evaporator 4 through the refrigeration air duct, and part of the refrigeration return air enters the premixing chamber 11 through the refrigeration return air inlet 112 of the premixing structure and mixes with the refrigerated return air in the premixing chamber 11. Then, it enters the evaporator 4 from the first air outlet 113 of the premixing chamber 11 to achieve the cooling and condensation of the refrigerated return air.
[0072] Optionally, a guide plate 17 is provided at the junction of the heating chamber 12 and the premixing chamber 11. One end of the guide plate 17 is connected to the refrigerated air duct 3, and the other end is separated from the housing 1 by a gap. This gap serves as the connection port 13 between the heating chamber 12 and the premixing chamber 11, enabling communication between them. Specifically, the guide plate 17 divides the connection port 13 between the refrigerated air duct 3 and the premixing structure into a first refrigerated return air inlet 111 and a second refrigerated return air inlet 121, allowing the refrigerated air duct 3 to supply refrigerated return air to both the premixing chamber 11 and the heating chamber 12.
[0073] Optionally, the guide plate 17 includes a bent portion near the refrigerated air duct 3 and an extension portion away from the refrigerated air duct 3. The bent portion and the extension portion are smoothly connected. The bent portion can be inclined downward along the side away from the refrigerated air duct 3, and the extension portion extends horizontally towards the other end of the housing 1. By providing the bent portion, the refrigerated return air entering the heating chamber 12 from the second refrigerated return air inlet 121 is guided. At the same time, it also allows the spatial volume of the premixing chamber 11 to be larger than the spatial volume of the heating chamber 12, ensuring the mixing efficiency of the refrigerated return air and the frozen return air in the premixing chamber 11.
[0074] Optionally, a plurality of third air outlets 15 are provided through the side of the casing 1 near the evaporator 4; part of the refrigerated return air enters the evaporator 4 through the premixing chamber 11, and part of the refrigerated return air enters the evaporator 4 through the third air outlets 15. That is, the refrigeration air duct is connected to the evaporator 4 through the first air outlet 113 and the third air outlet 15, and the second air outlet 122 is connected to the third air outlet 15 through the refrigeration air duct.
[0075] Optionally, the third air outlet 15 may include multiple outlets spaced apart to increase the return air efficiency of the evaporator 4.
[0076] Optionally, a baffle 14 is provided at one end of the premixing chamber 11 near the first air outlet 113. The first refrigerated return air inlet 111 and the frozen return air inlet 112 are both located on the side of the baffle 14 away from the first air outlet 113. The housing 1 is also provided with a third refrigerated return air inlet 114 connecting the premixing chamber 11 and the refrigerated air duct 3. In the direction of gravity, the third refrigerated return air inlet 114 is located between the baffle 14 and the first air outlet 113. That is, there are two openings, the first refrigerated return air inlet 111 and the third refrigerated return air inlet 114, between the premixing chamber 11 and the refrigerated air duct 3, through which refrigerated return air can be introduced. The first refrigerated return air is located below the baffle 14, and the third refrigerated return air is located above the baffle 14. The refrigerated return air entering the premixing chamber 11 through the third refrigerated return air inlet 114 directly enters the evaporator 4 through the first air outlet 113. This allows for further mixing of the mixed gas flowing out of the first air outlet 113, thereby reducing the temperature of the refrigerated return air entering through the third refrigerated return air inlet 114 and increasing the return air efficiency of the evaporator 4. The refrigerated return air entering the premixing chamber 11 through the first refrigerated return air inlet 111 mixes with the refrigerated return air inside the premixing chamber 11 for condensation and cooling.
[0077] Optionally, an air inlet 2 is provided at the end of the refrigeration air duct away from the evaporator 4; the housing 1 also includes a guide plate 16 extending from the side of the refrigeration return air inlet 112 near the evaporator 4 toward the air inlet 2, the guide plate 16 being used to guide the refrigeration return air in the refrigeration air duct to the premixing chamber 11. That is, the housing 1 is provided with an outwardly extending guide plate 16 to guide the refrigeration return air in the refrigeration air duct into the premixing chamber 11, increasing the air intake rate of the refrigeration return air in the premixing chamber 11.
[0078] Optionally, the air inlet 2 of the refrigeration duct is located below the premixing structure in the direction of gravity. Furthermore, the refrigeration duct may have multiple air inlets 2, which is not further limited here.
[0079] This application also provides a refrigeration device, including an evaporator 4 and an air duct assembly as described above. The air duct assembly is connected to the evaporator 4. The model of the refrigeration device is not further limited here; for example, it could be a double-door refrigerator with adjacent refrigerator compartments 6 and freezer compartments 5. Please refer to [link to relevant documentation]. Figure 6 , Figure 6 This is a schematic diagram of the structure of the refrigeration compartment 6 and the freezer compartment 5 of the refrigeration equipment provided in the embodiments of this application.
[0080] Optionally, please refer to Figures 7 to 9 , Figure 7 This is a schematic diagram of the structure of the freezer compartment 5 and the refrigeration return air foam 7 of the refrigeration equipment provided in the embodiments of this application. Figure 8This is a first structural schematic diagram of the refrigeration air duct and the refrigeration return air foam 7 of the refrigeration equipment provided in the embodiments of this application. Figure 9 This is a second structural diagram of the refrigeration equipment provided in the embodiments of this application, which includes a refrigeration return air foam 7 and a refrigeration air duct 3 inside the refrigeration return air foam 7.
[0081] In summary, there are three paths for the refrigerated return air in the refrigerated air duct 3 to enter the evaporator 4 in the embodiments of this application, among which:
[0082] The first rule is: Part of the refrigerated return air enters the space above the baffle 14 inside the shell 1 through the third refrigerated return air inlet 114 and flows out from the first air outlet 113 and into the evaporator 4;
[0083] The second rule is: Part of the refrigerated return air enters the premixing chamber 11 inside the shell 1 through the first refrigerated return air inlet, and after mixing with the frozen return air entering the premixing chamber 11, it flows out through the first air outlet 113 and enters the evaporator 4.
[0084] The third rule is: part of the refrigerated air enters the heating chamber 12 inside the shell 1 through the second refrigerated air inlet, then enters the freezing air duct through the second air outlet, and flows out from the third air outlet 15 on the shell and enters the evaporator 4.
[0085] The embodiments of this application provide two paths for the refrigerated return air in the refrigeration duct to enter the evaporator 4, wherein:
[0086] The first rule is: Part of the refrigerated return air enters the premixing chamber 11 inside the shell 1 through the refrigerated return air inlet 112, and after mixing with the refrigerated return air in the premixing chamber 11, it flows out through the first air outlet 113 and enters the evaporator 4;
[0087] The second rule is: Part of the refrigeration return air flows directly out through the third air outlet 15 on the casing 1 and enters the evaporator 4 via the refrigeration air duct.
[0088] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0089] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.
[0090] The premixed structure, air duct components, and refrigeration equipment provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A premixed structure applied to a refrigerator, the refrigerator including an evaporator, characterized in that, The premixed structure includes: case; The housing is provided with a premixing chamber, and the housing is provided with a first refrigerated return air inlet, a frozen return air inlet and a first air outlet communicating with the premixing chamber; frozen return air and at least part of refrigerated return air enter the premixing chamber through the frozen return air inlet and the first refrigerated return air inlet respectively to form a mixed gas; water vapor in the refrigerated return air is cooled and frosted in the premixing chamber; the mixed gas flows to the evaporator through the first air outlet. The housing also includes a heating chamber adjacent to the premixing chamber. The housing is provided with a second refrigerated return air inlet and a second air outlet communicating with the heating chamber. At least part of the refrigerated return air enters the heating chamber through the second refrigerated return air inlet, heats the premixing chamber to melt the frost inside the premixing chamber, and then flows to the evaporator through the second air outlet.
2. The premixed structure according to claim 1, characterized in that, The shell has a drain hole that communicates with the heating chamber at the lower end in the direction of gravity, so as to drain the condensate brought by the refrigeration return air in the heating chamber.
3. The premixed structure according to claim 2, characterized in that, The premixing chamber is located at the lower end of the heating chamber along the direction of gravity. The housing is provided with a communication port connecting the premixing chamber and the heating chamber. The condensate in the premixing chamber enters the heating chamber through the communication port and flows to the drain hole.
4. The premixed structure according to claim 2, characterized in that, The housing includes a flow guide surface surrounding the bottom of the heating chamber in the direction of gravity, and a drain hole penetrating the bottom of the flow guide surface, which directs the condensate in the heating chamber to the drain hole.
5. The premixed structure according to claim 1, characterized in that, A baffle is provided at one end of the premixing chamber near the first air outlet, and the first refrigerated return air inlet and the frozen return air inlet are both located on the side of the baffle away from the first air outlet. The baffle partially blocks the first air outlet to prolong the mixing time of the refrigerated return air and the frozen return air in the premixing chamber.
6. A duct assembly, characterized in that, include: The refrigeration air duct connects to the evaporator; The premixed structure as described in any one of claims 1-5 is disposed within the refrigeration duct, with the first air outlet facing the evaporator; The refrigerated air duct is connected to both the first refrigerated return air inlet and the second refrigerated return air inlet.
7. The air duct assembly according to claim 6, characterized in that, The casing is provided with several third air outlets on the side near the evaporator; Part of the refrigerated return air enters the evaporator through the premixing chamber, and part of the refrigerated return air enters the evaporator through the third air outlet.
8. The air duct assembly according to claim 6, characterized in that, A baffle is provided at one end of the premixing chamber near the first air outlet, and the first refrigerated return air inlet and the frozen return air inlet are both located on the side of the baffle away from the first air outlet. The housing is also provided with a third refrigerated return air inlet that connects the premixing chamber and the refrigerated air duct. The third refrigerated return air inlet is located between the baffle and the first air outlet.
9. The air duct assembly according to claim 6, characterized in that, The refrigeration air duct has an air inlet at the end furthest from the evaporator; The housing also includes a guide plate extending from the side of the refrigerated return air inlet near the evaporator toward the side of the air inlet, the guide plate being used to guide the refrigerated return air in the refrigerated air duct to the premixing chamber.
10. A refrigeration device, characterized in that, include: Evaporator; The air duct assembly as described in any one of claims 6-9 is in communication with the evaporator.