Evaporator assembly and refrigerator

Abstract

The utility model discloses an evaporator assembly and a refrigerator, and relates to the technical field of refrigeration electric appliances. According to the embodiment of the utility model, the evaporator assembly comprises a bracket, an evaporator and a heating pipe, the evaporator is mounted on the bracket; the heating pipe is arranged on the support and used for heating and defrosting the evaporator, and a heating core of the heating pipe is a resistance sheet so as to form radiation heating on the evaporator. Due to the fact that the resistor sheet has the directional heating performance, more heat is radiated to the area needing to be heated, the radiation quantity of the area not needing to be heated is small, heat loss is reduced, and meanwhile loss and the like caused by heating of the area not needing to be heated are avoided. The heating core made of the resistance sheet is adopted, more heat is emitted in a radiation mode in the heating process, the propagation path for transmitting the heat out through electromagnetic wave radiation is short, and heat loss is low in the propagation process. Therefore, according to the heating structure, the deicing and defrosting efficiency can be improved, the heat loss is reduced, and the loss caused by heating of the area which does not need to be heated is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration appliances, and specifically relates to an evaporator component and a refrigerator. Background Art

[0002] When the evaporator in the refrigeration device is working, due to the low temperature of its surface, the free water molecules in the air will condense on the evaporator when it is cooled. After a long time, a layer of frost will form, affecting the refrigeration effect. Defrosting must be performed every once in a while.

[0003] To solve the above problems, some existing refrigeration devices use metal tubes or quartz tubes to heat and defrost the evaporator. However, due to safety standards, the temperature of the heating tube is limited. These heating tubes are mainly heated by thermal convection, and the defrosting time is long and the efficiency is low. In addition, the distribution of heat dissipated by the heating tube is not ideal, resulting in unnecessary heat loss. For example, in devices such as refrigerators, in addition to radiating a large amount of heat toward the evaporator, the heating tube also radiates a large amount of heat toward the freezing zone. During the defrosting process, the freezing zone heats up, causing the food to slowly thaw. Such repeated freezing will destroy the nutrition of the food. The longer the defrosting time, the more serious the loss of food nutrition.

[0004] Therefore, there is room for improvement in the evaporator assembly in the refrigeration device. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the utility model aims to provide an evaporator assembly, which can improve the defrosting efficiency and the heat distribution.

[0006] A second aspect of the present invention is to provide a refrigerator.

[0007] According to the first embodiment of the utility model, the evaporator assembly comprises a bracket, an evaporator and a heating tube. The evaporator is mounted on the bracket; the heating tube is arranged on the bracket for heating and defrosting the evaporator, and the heating core of the heating tube is a resistance sheet to form radiation heating for the evaporator.

[0008] According to the evaporator assembly of the embodiment of the utility model, by setting the heating core of the heating tube to be sheet-shaped, the heat is mainly radiated in the vertical direction of its large surface, with strong directivity and more concentrated radiated heat. Since the resistor sheet has directional heating properties, by radiating more heat to the area that needs to be heated, and less radiation to the area that does not need to be heated, while reducing heat loss, it avoids heat loss in the area that does not need to be heated. When using the heating core of the resistor sheet, more heat is emitted in the form of radiation during heating, and the electromagnetic wave radiation not only shortens the propagation path of heat transfer, but also reduces heat loss during propagation. Therefore, this heating structure of the present application is conducive to improving the efficiency of defrosting and defrosting, reducing heat loss, and reducing heat loss in areas that do not need to be heated.

[0009] According to the evaporator assembly of some embodiments of the present invention, the resistor sheet is a film.

[0010] In some embodiments, the resistor sheet is a graphite film.

[0011] In some embodiments, the resistor sheet includes a heating zone, the heating zone includes a plurality of heating units connected in series, the heating units include a first segment, a second segment, a third segment and a fourth segment connected in sequence, two adjacent heating units are connected through the first segment and the fourth segment, the second segment and the fourth segment extend along the length direction of the resistor sheet, and the first segment and the third segment extend along the width direction of the resistor sheet.

[0012] According to the evaporator assembly of some embodiments of the present invention, the heating tube further comprises: a transparent tube, and the resistor sheet is arranged in the transparent tube.

[0013] In some embodiments, the transparent tube is a glass tube, and the interior of the transparent tube is filled with an inert gas.

[0014] According to the evaporator assembly of some embodiments of the utility model, the evaporator includes at least two evaporation tubes, each of the evaporation tubes is extended along a first direction, and at least two of the evaporation tubes are arranged along a second direction; wherein, at least two of the evaporation tubes are independent tubes, or at least two of the evaporation tubes are formed by bending a whole tube, and the first direction intersects with the second direction; the resistance sheet is extended along the first direction, and at least one largest surface of the resistance sheet is arranged toward the evaporation tube.

[0015] In some embodiments, the heating tube includes at least one of a first heating tube and a second heating tube, the first heating tube is located below all the evaporation tubes, and the second heating tube is arranged between at least two of the evaporation tubes along the second direction.

[0016] In some embodiments, the evaporator includes at least two columns of evaporation tubes arranged along a third direction, and the heating tubes include the second heating tubes located between two adjacent columns.

[0017] According to some embodiments of the present invention, the evaporator assembly further includes fins arranged on the evaporator, and the heating tube further includes a first heating tube, and the first heating tube is arranged through the fins.

[0018] A refrigerator according to an embodiment of the second aspect of the utility model comprises a cabinet and an evaporator assembly as in the above embodiment, wherein the evaporator is used to cool the refrigeration chamber.

[0019] By providing the evaporator assembly, the nutrition of the food in the refrigerator can be better protected and the performance of the refrigerator can be improved.

[0020] Additional aspects and advantages of the present invention will be given in the following description, will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of the structure of an evaporator assembly in some embodiments of the present application;

[0023] Figure 2 is a schematic diagram of heat radiation of a heating core in some embodiments of the present application;

[0024] Figure 3 is a structural schematic diagram of a heating core in some embodiments of the present application and a partial enlarged schematic diagram thereof;

[0025] Figure 4 is another structural schematic diagram of a heating core in some embodiments of the present application;

[0026] Figure 5 is another structural schematic diagram of a heating core in some embodiments of the present application;

[0027] Figure 6 is another structural schematic diagram of the heating core of some embodiments of the present application;

[0028] Figure 7 is yet another structural schematic diagram of the heating core of some embodiments of the present application;

[0029] Figure 8 is another structural schematic diagram of the heating core in some embodiments of the present application;

[0030] Fig. 9 is a connection diagram of connection terminals in some embodiments of the present application;

[0031] Fig.10 It is a schematic diagram of the heating tube structure of some embodiments of the present application;

[0032] Fig.11 is a schematic diagram of the arrangement of the first heating tube and the second heating tube in some embodiments of the present application;

[0033] Fig.12 is another schematic diagram of the arrangement of the first heating tube and the second heating tube in some embodiments of the present application;

[0034] Fig.13 This is another schematic diagram of the arrangement of the first heating tube and the second heating tube in some embodiments of the present application.

[0035] Reference numerals:

[0036] Evaporator assembly 100,

[0037] Bracket 10, evaporator 20, evaporation tube 2,

[0038] Heating tube 30, first heating tube 31, second heating tube 32, heating core 310, heating area 311, heating unit 311A, first section 311a, second section 311b, third section 311c, fourth section 311d, first heating sub-area 3111, second heating sub-area 3112, third heating sub-area 3113, fourth heating sub-area 3114, fifth heating sub-area 3115, sixth heating sub-area 3116, middle area 312, connecting area 313, lead wire 314, connecting terminal 315, tube head pressing seal 316, transparent tube 320,

[0039] Fin 40,

[0040] Condensate tray 500 and drainage hole 501. DETAILED DESCRIPTION

[0041] 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.

[0042] In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 the present invention can be understood according to specific circumstances.

[0044] As described in the background technology, in some existing refrigerators, the defrosting heating components mainly include metal heating tubes and quartz heating tubes, and are placed at the bottom of the evaporator near the condensate tray. In accordance with the mandatory safety standards, in order to ensure that the surface temperature of the heating tube does not exceed 350°C, the power of the metal heating tube and the quartz heating tube is generally controlled at around 200W. This situation will cause the following problems:

[0045] First, the specific heat capacity of the heating tube itself is relatively high. After being powered on for heating, the heating tube itself needs to store some heat, making it difficult to quickly transfer the heat to the frost on the evaporator.

[0046] Secondly, the surface temperature of the heating tube is low, the radiation accounts for a small proportion, and heat exchange is mainly carried out through heat convection, which has low efficiency and slow heating speed.

[0047] Finally, during the heating process, the heating tube usually evenly distributes heat 360 degrees along the tube body, resulting in similar heat distribution toward the evaporator and toward the freezing zone. However, dissipating too much heat toward the freezing zone will cause the temperature in the freezing zone to be too high, causing the frozen food to heat up or even deteriorate.

[0048] To solve the above problems, refer to Figure 1-Figure 13 The evaporator assembly 100 according to the first embodiment of the utility model is described. There is no limitation on the application scenario of the evaporator assembly 100. For example, the evaporator assembly 100 can be applied to a refrigerator, or the evaporator assembly 100 can also be applied to other refrigeration equipment such as an air conditioner.

[0049] like Figure 1 As shown, the evaporator assembly 100 according to the embodiment of the present invention includes a bracket 10 , an evaporator 20 and a heating tube 30 .

[0050] The evaporator 20 is mounted on the bracket 10 .

[0051] The heating pipe 30 is disposed on the bracket 10 and is used to heat and defrost the evaporator 20 .

[0052] The heating tube 30 is different from the conventional heating method. The heating core 310 of the heating tube 30 is a resistor sheet to form radiation heating for the evaporator 20 .

[0053] As the name implies, resistor sheet refers to the resistor material part that can generate heat when powered, and the resistor material part is in sheet form. The larger the surface area of ​​the resistor material part, the more heat it dissipates outwards. Therefore, the sheet-shaped resistor sheet has directional heating properties, such as Figure 2 As shown, the resistor sheet generates a large amount of heat in a direction perpendicular to itself. Therefore, in the present application, by setting the heating core 310 of the heating tube 30 to a resistor sheet, the heat distribution of the heating tube 30 can be reasonably set as needed, and the heat can be directed more toward areas with high heat demand. For example, when the large surface of the resistor sheet is facing the evaporator 20, the evaporator 20 can obtain more heat, thereby achieving a heating and defrosting effect. For another example, according to actual tests, it was found that in the evaporator assembly 100, an ice layer is easily formed on the evaporator 20, and an ice layer is also easily formed on the condensate tray below it, resulting in poor drainage. At this time, the large surface of the resistor sheet can be facing the evaporator 20 and the condensate tray.

[0054] In the present application, by using a heating core 310 made of a resistor sheet, the heating tube 30 can transfer heat to the evaporator 20 in a more concentrated and direct manner, thereby reducing heat loss during the transfer process. At the same time, the radiation heating method also avoids the limitation of the traditional heating tube 30 relying on heat convection for heat exchange, thereby improving the heating speed and efficiency and achieving an improvement in heating efficiency.

[0055] It should be noted here that the so-called convection heat exchange, in the evaporator assembly 100, is usually that the heating tube 30 first transfers the heat to the air flowing through, and then the heated air heats the evaporator 20 when it flows to the evaporator 20, which is not only inefficient but also has a large heat loss. In the present application, by setting a heating core 310 made of a resistor sheet, the heat of the heating core 310 can be radiated to the outside world in the form of electromagnetic waves. The electromagnetic wave radiation not only shortens the propagation path of the heat transferred to the evaporator 30, but also has low heat loss during propagation. Combined with the directional heating performance of the resistor sheet, the distribution ratio of heat radiation can also be designed, thereby further improving the heating efficiency and reducing heat loss.

[0056] In addition, since the resistor sheet has directional heating properties, it radiates more heat to the area that needs to be heated, while the area that does not need to be heated radiates less heat. While reducing heat loss, it also avoids heat loss in the area that does not need to be heated.

[0057] According to the evaporator assembly 100 of some embodiments of the present invention, the resistor sheet is a thin film, that is, the resistor sheet is a film made of a thin film resistor material. The thin film resistor material refers to a film resistor material made by vacuum evaporation, DC or AC sputtering, chemical deposition, etc., including Ni-Co series, Ta series, Si series, metal ceramic series resistor films, and Au-Cr, Ni-P and other resistor films.

[0058] Optionally, the resistor sheet may also include a metal sheet, such as an iron sheet, a copper sheet, a chromium sheet, a nickel sheet, a tungsten sheet, and the like.

[0059] Of course, the resistor sheet of the present application adopts any other resistor material known in the prior art, including carbon material, ceramic material, semiconductor material, clay material and the like.

[0060] When the resistor sheet is a carbon sheet, it can be a graphite sheet, an activated carbon sheet, a bulk carbon sheet, etc. When the resistor sheet is a ceramic material sheet, the high temperature tolerance and corrosion resistance of the ceramic material can be obtained. When the resistor sheet is a semiconductor material sheet, it can include a silicon sheet, a germanium sheet, etc. When the resistor sheet is a clay material sheet, it can include a carbon clay sheet, a corona ceramic sheet, a porcelain bottle halo clay sheet, etc.

[0061] In some specific embodiments, the resistor sheet material is a graphite film material. Here, the graphite film material is a sheet structure with a certain thickness formed by laminating graphite films, and has the characteristics of high heating power and fast temperature rise.

[0062] When the resistor sheet is made of graphite film, the heating tube 30 can also be called a graphite heating tube. In this case, the heating tube 30 has many advantages:

[0063] First, the graphite film material has excellent high temperature stability. This is due to the high temperature resistance of graphite itself. This material can maintain stable physical and chemical properties in a high temperature environment and is not prone to oxidation, burn-through or melting. Therefore, when the graphite film material is used as the heating core 310 of the heating tube 30, it can remain stable under high temperature operation to ensure the normal operation of the evaporator assembly 100.

[0064] Secondly, the graphite film has a faster temperature rise rate. Since the graphite material has a lower heat load and thermal inertia, when the current passes through the graphite film, it can respond quickly and generate heat. This enables the heating tube 30 to quickly reach the required operating temperature, thereby shortening the defrosting time and improving the defrosting efficiency.

[0065] At the same time, the graphite film also has high thermal conductivity and heating uniformity. Due to its excellent thermal conductivity, the graphite film can quickly transfer heat to the surface of the evaporator 20, achieving fast and uniform heating. This helps to reduce heat loss during the transfer process, improve the defrosting effect, and avoid local overheating or uneven temperature on the surface of the evaporator 20.

[0066] In addition, graphite film has the characteristic of rapid cooling. When the heating tube 30 stops working, due to the high thermal conductivity and rapid cooling characteristics of the graphite film, most of the heat will dissipate quickly, leaving only a small amount of heat stored in parts such as the glass. Therefore, not much heat continues to be dissipated to the outside, which makes the temperature of the evaporator assembly 100 continue to rise to a smaller extent. This feature is particularly important during the operation of the refrigerator. The heating tube 30 made of graphite film can effectively avoid the continuous rise in the temperature inside the refrigerator caused by continued heating, thereby ensuring the stability of the temperature inside the refrigerator and ensuring good preservation of food.

[0067] After practical calculations, under the same conditions, the applicant team compared the application effects of two heating tubes 30 made of different materials in the defrosting process of the refrigerator.

[0068] In Test 1, the defrosting heating time was as long as 24 minutes using the traditional metal heating tube, and the temperature rise during the heating period reached 9.7°C. During the heating stop period, the temperature rise was still 7.1°C, which resulted in a total no-load maximum frost temperature rise of 16.8°C. Such results mean that defrosting requires a long waiting time and high energy consumption, and the temperature fluctuates greatly, which may affect the stability of the temperature inside the refrigerator.

[0069] In Test 2, the defrosting heating time was shortened to 11 minutes by using the heating tube 30 of the embodiment of the present application. At the same time, the temperature rise during the heating period was controlled at 5.2°C, and the temperature rise during the heating stop period was 3.5°C. The total no-load maximum frost temperature rise was only 8.7°C, which was nearly half of that of the metal heating tube.

[0070] By improving the heating tube 30, not only the defrosting efficiency is improved, but also the energy consumption required for defrosting is reduced, and at the same time, the temperature fluctuation is smaller, which is conducive to maintaining the temperature inside the refrigerator stable.

[0071] In some embodiments, the heating tube 30 includes a sheet-shaped resistor sheet. Forming the resistor sheet into a sheet can avoid the problem of too high total power due to low resistance, thereby avoiding excessive power density in the heating area 311 of the resistor sheet, and improving the service life of the heating core 310.

[0072] In some embodiments, Figure 3As shown, the resistor sheet includes a heating area 311, the heating area 311 includes a plurality of heating units 311A ​​connected in series, the heating unit 311A ​​includes a first section 311a, a second section 311b, a third section 311c and a fourth section 311d connected in sequence, two adjacent heating units 311A ​​are connected via the first section 311a and the fourth section 311d, the second section 311b and the fourth section 311d are extended along the length direction of the resistor sheet, and the first section 311a and the third section 311c are extended along the width direction of the resistor sheet.

[0073] In this way, the first section 311a, the second section 311b, the third section 311c and the fourth section 311d are connected in sequence to form an undulating structure. Since multiple heating units 311A ​​are connected in series, the first section 311a and the fourth section 311d of adjacent heating units 311A ​​are connected together, so that the heating area 311 forms a continuous undulating structure. It can be understood that the connection here means to be combined together. For example, the first section 311a, the second section 311b, the third section 311c and the fourth section 311d can be integrally formed, and the multiple heating units 311A ​​also form an integrally formed structure.

[0074] Along the length direction of the resistor sheet, at least part of the resistor sheet forms a continuous undulating structure. Since along the length direction of the resistor sheet, there are parts of the resistor sheet extending in different directions, the second section and the fourth section extend in the same direction, and the first section and the third section extend in the same direction, the resistor sheet can have a larger heating area in a limited space and the extension length of the resistor sheet without reducing the resistance.

[0075] Among them, the second section 311b and the fourth section 311d basically extend along the length direction of the resistor sheet, while the first section 311a and the third section 311c basically extend perpendicular to the length direction. This arrangement facilitates the structural processing of the first section 311a, the second section 311b, the third section 311c and the fourth section 311d in the heating unit 311A, making the overall structure more stable and maximizing the use of space.

[0076] like Figure 3-Figure 9 As shown, in some embodiments of the present application, the resistor sheet also includes a connection area 313, which is located at the end of the resistor sheet. The setting of the connection area 313 realizes the electrical connection between the heating core 310 and external components. For example, the setting of the connection area 313 provides a support point for the fixed lead 314. The lead 314 can be fixed on the connection area 313, and the other end of the lead 314 can be connected to another component (such as a connection terminal 315). By setting the connection area 313, it is convenient to realize the power supply of the heating core 310.

[0077] In some embodiments, the resistor sheet mainly dissipates heat through the heating area 311 , and the heating area 311 includes a plurality of heating units 311A. The total resistance of the heating area 311 can be calculated by adding the resistances of the heating units 311A.

[0078] In such Figure 4 In some embodiments shown, the resistor sheet includes a plurality of continuous heating areas 311, and the plurality of heating areas 311 include a first heating sub-area 3111, a second heating sub-area 3112, and a third heating sub-area 3113. The first heating sub-area 3111 is arranged in the middle of the resistor sheet, there are two second heating sub-areas 3112, and the two second heating sub-areas 3112 are arranged at both ends of the first heating sub-area 3111, and there are two third heating sub-areas 3113, and the two third heating sub-areas 3113 are arranged at one end of the second heating sub-area 3112 away from the first heating sub-area 3111. The density of the heating unit 311A ​​in the first heating sub-area 3111 is ρ1, the density of the heating unit 311A ​​in the second heating sub-area 3112 is ρ2, and the density of the heating unit 311A ​​in the third heating sub-area 3113 is ρ3, satisfying ρ3<ρ1<ρ2. In this way, the first heating sub-area 3111 is located in the middle of the resistor sheet, and the density ρ1 of its heating unit 311A ​​is moderate. This means that the heating effect of the central area is stable and not too strong, thereby avoiding the problem of overheating in the middle, ensuring that the central area can be heated evenly and effectively, and at the same time, no unnecessary energy waste will be caused. Secondly, the second heating sub-area 3112 is respectively arranged at both ends of the first heating sub-area 3111, wherein the density ρ2 of the heating unit 311A ​​in the second heating sub-area 3112 is greater than ρ1. This means that the heating amount of the second heating sub-area 3112 is enhanced compared with the first heating sub-area 3111, so that the second heating sub-area 3112 can provide a stronger heating effect at both ends, thereby reaching the temperature required for defrosting more quickly, shortening the defrosting time, and improving the defrosting efficiency. Finally, the third heating sub-area 3113 is located at the outermost side of the resistor sheet, and the larger the volume of the material per unit length, the higher the heat generation. As a result, less heat is generated in the middle and more heat is generated at the edge, which is conducive to a more balanced heat distribution.

[0079] In such Figure 5In some embodiments shown, the resistor sheet includes two fourth heating sub-areas 3114 and a middle area 312, wherein the middle area 312 is arranged between the two fourth heating sub-areas 3114, and the two ends of the middle area 312 are electrically connected to the two fourth heating sub-areas 3114 respectively. That is to say, the resistor sheet is designed in sections along the length direction, wherein the fourth heating area 311 is designed according to the length most suitable for heating, and the middle area 312 is used as a transition connection, and the setting of the middle area 312 separates the two fourth heating areas 311 to avoid excessive concentration of heat. Since the temperature near the middle position of the heating core 310 is higher when the heating core 310 radiates heat to the evaporator 20, the middle area 312 is designed to separate the two adjacent fourth heating areas 311, so that the heat radiated by the heating core 310 is more uniform. In addition, the length of the middle area 312 can be adjusted according to different scenarios, so that the interval length of the two adjacent fourth heating areas 311 can adapt to the change, thereby realizing the dynamic distribution of the change in heating amount.

[0080] In such Figure 6 In some of the embodiments shown, the resistor sheet includes a second heating sub-zone 3112 located in the middle and two third heating sub-zones 3113 respectively arranged at both ends of the second heating sub-zone 3112, wherein the length L2 of the second heating sub-zone 3112 is greater than the length L3 of each third heating sub-zone 3113. This arrangement can achieve the stability of heating in the middle position and the auxiliary effect of large heating amount at both ends.

[0081] In such Figure 7 In some embodiments shown, the resistor sheet includes a plurality of first heating sub-areas 3111, intermediate areas 312 alternately arranged between the first heating sub-areas 3111, and third heating sub-areas 3113 arranged at both ends of the resistor sheet. Among them, the length of the intermediate area 312 located in the middle of the resistor sheet to the intermediate area 312 at the end gradually decreases. Such a setting not only ensures that the first heating sub-area 3111 can continuously distribute heat, but also effectively avoids excessive concentration of heat through the setting of the intermediate area 312. The length from the intermediate area 312 in the middle of the resistor sheet to the intermediate area 312 at the end presents a gradually decreasing trend. At the same time, by gradually reducing the length of the intermediate area 312, the heating effect from the middle to the end can be gradually enhanced. The main function of the intermediate area 312 is to isolate and disperse the heat generated by the first heating sub-area 3111 to prevent excessive concentration of heat. The third heating sub-area 3113 is located at the outermost side of the resistor sheet. The larger the volume of material per unit length, the higher the heat generation. Thus, less heat is generated in the middle and more heat is generated at the edge, so that the evaporator assembly 100 can maintain the heating effect during the heating process.

[0082] In such Figure 8In some embodiments shown, the resistor sheet includes a fifth heating sub-area 3115 located in the middle and two sixth heating sub-areas 3116 respectively arranged at both ends thereof. The width of the heating unit 311A ​​in the fifth heating sub-area 3115 is greater than the width of the heating unit 311A ​​in the sixth heating sub-area 3116. By adjusting the width of the heating unit 311A, the heating amount in the middle is increased, so that when the resistor sheet is heated, a temperature distribution can be formed in which the heating amount in the middle is larger and the heating amount at both ends is relatively smaller.

[0083] In short, the heating amount of the resistor sheet can be adjusted in a variety of ways. For example, the heating amount can be adjusted by adjusting the density of the heating unit 311A, adjusting the width of the heating unit 311A, and setting the middle area 312 in the resistor sheet. These adjustment methods, whether single or combined, can effectively optimize the layout of the heating amount of the resistor sheet, so these adjustment methods all belong to the protection scope of the technical solution of this application.

[0084] like Fig.10 In the evaporator assembly 100 according to some embodiments of the present invention, the heating tube 30 further includes a transparent tube 320 , and the resistor sheet is disposed inside the transparent tube 320 .

[0085] The transparent tube 320 is filled with an inert gas. The transparent tube 320 is provided to protect the resistor sheet from impact and reduce the probability of the resistor sheet breaking. It can also prevent the resistor sheet from being oxidized at high temperatures.

[0086] In some optional embodiments, such as Figure 9-10 As shown, the transparent tube 320 can be a glass tube, the resistor sheet is inserted into the transparent tube 320, both ends of the resistor sheet are respectively connected to the lead 314, and the two ends of the outer tube are respectively provided with connecting terminals 315, the lead 314 is connected to the connecting terminals 315, and the connecting terminals 315 are suitable for connecting to other power supply components.

[0087] In some optional embodiments, the interior of the transparent tube 320 is filled with an inert gas, which may be helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), etc. Since the resistor sheet is in a high-temperature heating state when power is turned on, the inert gas can be provided to protect the resistor sheet and extend the service life of the resistor sheet.

[0088] In some Fig.10 In the illustrated embodiment, the heating tube 30 further includes a tube head pressing seal 316 for sealing the end of the heating tube 30 .

[0089] According to some embodiments of the present invention, the evaporator assembly 100 is as follows: Fig.11As shown, the evaporator 20 includes at least two evaporation tubes 2, each evaporation tube 2 is extended along a first direction, and at least two evaporation tubes 2 are arranged along a second direction.

[0090] The evaporation tube 2 extends along the first direction and can be fully expanded to increase its contact area with the interior of the refrigerator, thereby improving the refrigeration efficiency of the refrigerator.

[0091] At least two evaporation tubes 2 are arranged along the second direction. This arrangement forms a certain interval between the evaporation tubes 2, which is conducive to air circulation and heat exchange. At the same time, by reasonably adjusting the spacing of the evaporation tubes 2 in the second direction, the overall performance of the evaporator 20 can be further optimized, so that it can maintain a stable cooling effect under different working environments.

[0092] At least two evaporation tubes 2 are independent tubes, or at least two evaporation tubes 2 are formed by bending a whole tube, and the first direction intersects the second direction. Thus, through the above arrangement, the layout of the evaporation tubes 2 can be made more reasonable, and the assembly efficiency between the evaporation tubes 2 and the bracket 10 can be improved.

[0093] The resistor sheet is arranged to extend along a first direction, such as Fig.12 As shown, at least one largest surface of the resistor sheet is disposed toward the evaporation tube 2. By disposing the largest surface of the resistor sheet toward the evaporation tube 2, it is ensured that heat can be directly and effectively transferred to the evaporation tube 2, thereby improving the defrosting efficiency.

[0094] In some embodiments, the heating tube 30 includes at least one of a first heating tube 31 and a second heating tube 32, and the first heating tube 31 is located below all evaporation tubes 2. The first heating tube 31 can directly heat the evaporation tube 2, and the heat can be quickly and evenly transferred to the evaporation tube 2, thereby improving the heat exchange efficiency.

[0095] The second heating tubes 32 are arranged along the second direction between at least two evaporation tubes 2. In this way, the second heating tubes 32 can directly heat the air between the evaporation tubes 2, thereby accelerating the air flow and heat exchange. By properly setting the number and position of the second heating tubes 32, the heating effect and cooling performance of the evaporator assembly 100 can be further optimized.

[0096] In some Fig.13In the illustrated embodiment, the evaporator 20 includes at least two rows of evaporation tubes 2 arranged along a third direction, and the heating tube 30 includes a second heating tube 32 located between two adjacent rows. The second heating tube 32 is arranged between two adjacent rows of evaporation tubes 2 to ensure that heat can be directly and evenly transferred to the evaporation tube 2, thereby improving the heat exchange efficiency. As a result, the heat conduction distance between the second heating tube 32 and the evaporation tube 2 is the shortest, and the heat loss is minimized, thereby achieving an efficient heating effect. At the same time, the defrosting temperature rise is reduced, and the defrosting time is correspondingly shortened, and the energy consumption required for defrosting can also be reduced.

[0097] like Figure 1 , Fig.11 , Fig.13 The evaporator assembly 100 according to some embodiments of the utility model is shown, and further includes a fin 40 provided on the evaporator 20, and the heating tube 30 further includes a first heating tube 31, and the first heating tube 31 is provided through the fin 40. Specifically, the fin 40 can increase the heat exchange area of ​​the evaporator 20, improve the refrigeration effect of the refrigerator, and shorten the refrigeration time. When the temperature on the evaporator 20 is too low, frost forms on the surface of the fin 40. At this time, the first heater is heated, and the heat generated by the first heater is transferred to the surface of the fin 40, and the frost or snow on the fin 40 is quickly melted by the heat, thereby achieving the defrosting effect of the evaporator 20 and allowing the evaporator 20 to operate normally.

[0098] A refrigerator according to an embodiment of the second aspect of the utility model includes a cabinet and an evaporator assembly 100, wherein the evaporator 20 is used to cool a refrigeration chamber.

[0099] By setting up the evaporator assembly 100 according to the first aspect embodiment of the present application, the advantages of shorter defrosting time, reduced defrosting temperature rise, and reduced defrosting energy consumption are achieved, thereby improving the working efficiency of the evaporator assembly 100 and further improving the performance of the refrigerator.

[0100] In some embodiments, a condensation tray 500 is further included, and the condensation tray 500 is located below the evaporator 20. The condensation tray 500 can effectively receive the melted frost water and prevent it from dripping to other parts inside the refrigerator, thereby keeping the inside of the refrigerator clean and dry.

[0101] Optionally, the condensation tray 500 is provided with a drainage hole 501 for draining the water received by the condensation tray 500 .

[0102] Below, refer to the attached Figure 1-Figure 3 , Figure 9-13 , describes an evaporator assembly 100 according to a specific embodiment of the present application.

[0103] Reference Figure 1 The evaporator assembly 100 includes a bracket 10 , an evaporator 20 , a heating tube 30 and a fin 40 .

[0104] The evaporator 20 and the heating tube 30 are both mounted on the bracket 10 .

[0105] The evaporator 20 includes: a plurality of evaporation tubes 2. A portion of the evaporation tubes 2 are extended along a first direction, another portion of the evaporation tubes 2 are arranged along a second direction, and another portion of the evaporation tubes 2 are arranged in two rows along a third direction.

[0106] Reference Figure 11-13 The heating tube 30 includes: a first heating tube 31 and a second heating tube 32. The first heating tube 31 is located below all the evaporation tubes 2, and the second heating tube 32 is arranged between at least two evaporation tubes 2 along the second direction. At the same time, the second heating tube 32 is also located between two rows of evaporation tubes 2 arranged along the third direction.

[0107] The first heating tube 31 and the second heating tube 32 are disposed through the fins 40 .

[0108] Reference Fig.10 Each heating tube 30 includes a heating core 310 and a transparent tube 320 .

[0109] Reference Fig.12 The heating core 310 is a resistor sheet, the resistor sheet is extended along a first direction, and at least one largest surface of the resistor sheet is arranged toward the corresponding evaporation tube 2.

[0110] Reference Figure 3 The heating core 310 includes: two heating areas 311, a middle area 312, a connecting area 313, a lead 314, and a connecting terminal 315.

[0111] Reference Fig. 9 The lead wire 314 is connected to the connection terminal 315, and the connection terminal 315 is suitable for connecting to other power supply components.

[0112] Reference Figure 3 The middle area 312 is arranged between the two heating areas 311.

[0113] Each heating zone 311 includes: a plurality of heating units 311A ​​connected in series.

[0114] Reference Figure 3 The heating unit 311A ​​includes: a first section 311a, a second section 311b, a third section 311c and a fourth section 311d connected in sequence, two adjacent heating units 311A ​​are connected by the first section 311a and the fourth section 311d, the second section 311b and the fourth section 311d are extended along the length direction of the resistor sheet, and the first section 311a and the third section 311c are extended along the width direction of the resistor sheet.

[0115] The connection area 313 is located at the end of the resistor sheet. The setting of the connection area 313 can realize the power supply of the heating core 310.

[0116] The interior of the transparent tube 320 is filled with an inert gas.

[0117] Other components of the evaporator assembly 100 according to the embodiment of the present invention, such as a refrigerator, are known to those skilled in the art and will not be described in detail here.

[0118] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0119] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An evaporator assembly, characterized in that: include: Bracket; an evaporator, the evaporator being mounted on the bracket; A heating tube is arranged on the bracket and is used to heat and defrost the evaporator. The heating core of the heating tube is a resistance sheet material to form radiation heating for the evaporator.

2. The evaporator assembly according to claim 1, characterized in that The resistor sheet material is a thin film.

3. The evaporator assembly according to claim 2, characterized in that The resistor sheet material is a graphite film material.

4. The evaporator assembly according to claim 2, characterized in that The resistor sheet includes a heating area, which includes a plurality of heating units connected in series. The heating units include a first section, a second section, a third section and a fourth section connected in sequence. Two adjacent heating units are connected via the first section and the fourth section. The second section and the fourth section extend along the length direction of the resistor sheet, and the first section and the third section extend along the width direction of the resistor sheet.

5. The evaporator assembly according to claim 1, characterized in that The heating tube further comprises: a transparent tube, and the resistor sheet is arranged in the transparent tube.

6. The evaporator assembly according to claim 5, characterized in that The transparent tube is a glass tube, and the interior of the transparent tube is filled with an inert gas.

7. The evaporator assembly according to any one of claims 1 to 6, characterized in that: The evaporator comprises at least two evaporation tubes, each of which is extended along a first direction, and at least two of which are arranged along a second direction; wherein at least two of the evaporation tubes are independent tubes, or at least two of the evaporation tubes are formed by bending a whole tube, and the first direction intersects with the second direction; The resistor sheet is extended along the first direction, and at least one largest surface of the resistor sheet is disposed toward the evaporation tube.

8. The evaporator assembly according to claim 7, characterized in that The heating tube includes at least one of a first heating tube and a second heating tube, the first heating tube is located below all the evaporation tubes, and the second heating tube is arranged between at least two of the evaporation tubes along the second direction.

9. The evaporator assembly according to claim 8, characterized in that The evaporator includes at least two rows of evaporation tubes arranged along a third direction, and the heating tubes include the second heating tubes located between two adjacent rows.

10. The evaporator assembly according to any one of claims 1 to 6, characterized in that: It also includes fins arranged on the evaporator, and the heating tube also includes a first heating tube, and the first heating tube is arranged through the fins.

11. A refrigerator, characterized in that: include: A box body, wherein the box body is arranged in a refrigeration chamber; The evaporator assembly according to any one of claims 1 to 10, wherein the evaporator is used to cool the refrigeration chamber.

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