Evaporator assembly and refrigerator

Abstract

The utility model provides an evaporator assembly and a refrigerator, the evaporator assembly comprises an evaporator and a plurality of heaters, the heaters are connected with the evaporator, the plurality of heaters are distributed along a first direction, and a part of the evaporator is arranged between two adjacent heaters. The heater comprises a first heating section and a second heating section, the first heating section and the second heating section are distributed in the length direction of the heater, and the power density of the first heating section is different from that of the second heating section. By means of the mode, the purpose of sectional type different power densities is achieved, and the defrosting effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to an evaporator component and a refrigerator. Background Art

[0002] During the refrigerator's cooling process, water vapor continuously condenses into frost on the evaporator, which adheres to the surface. If no measures are taken to prevent this accumulation, the frost will completely envelop the evaporator, significantly reducing the efficiency of the refrigerant's evaporative heat absorption. Therefore, improving the defrosting effect on the evaporator surface has become a pressing issue. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, in the first aspect, the present invention proposes an evaporator assembly, comprising: an evaporator; multiple heaters connected to the evaporator, the multiple heaters are distributed along a first direction, and a part of the evaporator is provided between two adjacent heaters; the heater comprises: a first heating section and a second heating section, the first heating section and the second heating section are distributed along the length direction of the heater, and the power density of the first heating section and the second heating section are different.

[0005] During the operation of the refrigerator, frost will appear on the surface of the evaporator, so a heater is needed to defrost the surface of the evaporator.

[0006] The heater is mounted on the evaporator. During operation, the heat generated by the heater is used to melt frost on the surface of the sub-tube. There are multiple heaters, distributed along a first direction, with a portion of the evaporator disposed between adjacent heaters. The multiple heaters are spaced apart to ensure uniform heating of the evaporator, effectively melting frost on the surface and improving the defrosting effect.

[0007] In the length direction of the heater, the first part of the heater is set as the first heating section, and the second part of the heater is set as the second heating section. The first heating section and the second heating section are located at different positions.

[0008] Since the power densities of the first heating segment and the second heating segment are different, the heat generated per unit time by the first heating segment and the second heating segment is different, and the defrosting efficiencies of the first heating segment and the second heating segment for frost at different positions are also different.

[0009] In the evaporator, there may be locations with large local frost areas and thick frost thickness, and there may also be locations that are not easily frosted. Therefore, targeted defrosting should be performed for different locations in the evaporator. This solution defines two parts with different power densities in the heater. For example, the power density of the first heating section is greater than the power density of the second heating section. These two parts can correspond to different locations in the evaporator. For locations with large local frost areas and thick frost thickness, the first heating section can be corresponded to the above-mentioned parts, and for locations that are not easily frosted, the second heating section can be corresponded to the above-mentioned parts. In this way, the purpose of segmented different power densities is achieved, which is conducive to improving the defrosting effect.

[0010] In addition, the evaporator assembly in the above technical solution provided by the present invention may also have the following additional technical features:

[0011] In some technical solutions, optionally, the heater further includes: a graphene heating sheet, and the width and / or thickness of the graphene heating sheet are different in the first heating section and the second heating section.

[0012] Graphene material has extremely high thermal conductivity and can transfer heat quickly, causing the temperature around the heater to rise rapidly, which is beneficial to improving defrosting efficiency.

[0013] The resistance of graphene affects its power density, while the width and thickness of graphene affect its resistance. Therefore, the resistance of graphene can be changed by changing the width and / or thickness of graphene. In this solution, graphene heating plates are provided in both the first heating section and the second heating section, and the graphene heating plates serve as heat sources for the first heating section and the second heating section. In addition, the width and / or thickness of the graphene heating plates in the first heating section and the second heating section are different, thereby making the power density of graphene in the first heating section and the second heating section different, thereby making the first heating section and the second heating section have different heating efficiencies.

[0014] In some technical solutions, optionally, the heater further includes: a quartz glass shell, and the graphene heating sheet is located in the quartz glass shell.

[0015] The graphene heating element is installed in a quartz glass shell, which protects the graphene heating element. The quartz glass shell is not easy to affect the heat transfer, thus ensuring the defrosting effect of the graphene heating element on the surface of the sub-tube.

[0016] The thermal expansion coefficient of the quartz glass shell is low, which makes the quartz glass shell less likely to be deformed by temperature.

[0017] In some technical solutions, optionally, the heater further includes: rubber plugs located at both ends of the quartz glass shell, and the rubber plugs are connected to the evaporator.

[0018] Rubber plugs are installed at both ends of the quartz glass shell. The rubber plugs are used to connect with the evaporator. Therefore, the heater is installed on the evaporator through the rubber plugs.

[0019] The rubber plug is soft in texture, making it easy to deform. When the rubber plug is connected to the evaporator, the rubber plug can fit tightly with the installation position, making it difficult for the rubber plug to fall off the installation position, thereby improving the connection stability between the heater and the evaporator.

[0020] In some technical solutions, the evaporator includes an evaporator coil, which includes a plurality of sub-tubes sequentially distributed along a first direction. The evaporator assembly also includes a water receiving tray connected to the evaporator, located on one side of the evaporator along the first direction, and having a drain port. The multiple heaters include a first heater, and the distance between the other side of the evaporator and the first heater along the first direction is L1, and the distance between the first heater and the water receiving tray is L2, where L1>L2.

[0021] Along the first direction, a water collecting pan is arranged on one side of the evaporator. The water collecting pan is used to collect water after defrosting. That is, after the frost on the surface of the evaporator melts, it drips into the water collecting pan. The water collecting pan is usually provided with a drain outlet. The water collected in the water collecting pan is discharged outward through the drain outlet to avoid water accumulation on the water collecting pan for a long time.

[0022] One of the multiple heaters is set as the first heater, the other side of the evaporator is away from the water receiving pan, and the distance between the other side of the evaporator and the first heater is L1, and the distance between the first heater and the water receiving pan is L2, L1>L2. Therefore, the distance between the first heater and the water receiving pan is small, and the first heater is installed close to the water receiving pan. The heat generated by the first heater can effectively heat the water receiving pan, preventing the water on the water receiving pan from freezing due to low temperature. The water on the water receiving pan can be discharged smoothly, ensuring the drainage effect of the water receiving pan.

[0023] In some technical solutions, optionally, along the first direction, the first heater is located between one side of the evaporator and the water receiving pan.

[0024] The first heater is installed between the first side of the evaporator and the water tray. The distance between the first heater and the water tray is small, so the heat generated by the first heater can effectively heat the water tray. Furthermore, the first heater faces directly toward the water tray, and no sub-tube is provided between the first heater and the water tray. This prevents the sub-tube from blocking the heat radiated from the first heater toward the water tray. The first heater can directly radiate heat to the water tray, improving the heating effect of the water tray and preventing ice from forming on the surface of the water tray, which could block the drain outlet.

[0025] In some technical solutions, optionally, the heater and the sub-tube body extend in the same direction.

[0026] The extension direction of the heater is the same as that of the sub-tube body. Therefore, in the length direction of the sub-tube body, all parts of the sub-tube body can be effectively heated by the heater, thereby avoiding the problem of local frost on the sub-tube body and improving the defrosting effect on the surface of the sub-tube body.

[0027] In some technical solutions, optionally, the length of the heater is L3, and the width of the heater along the first direction is W, where L3>W.

[0028] The heater has a relatively long length and a relatively small width along the first direction, resulting in a slender structure. With this structure, a relatively large portion of the heater surface can face the sub-tube, reducing ineffective radiation from the heater, thereby reducing ineffective energy consumption and improving the heater's heating efficiency.

[0029] In some technical solutions, optionally, a slot is provided on the evaporator, and the heater is detachably connected to the slot.

[0030] A card slot is formed on the evaporator, which is used to adapt to the heater. The heater can be installed on the card slot. The card slot limits the heater to prevent the heater from shaking relative to the evaporator, thereby improving the installation stability of the heater.

[0031] In some technical solutions, optionally, the evaporator further includes: a support member connected to the sub-tube body, and the support member is used to support the heater.

[0032] When the heater is installed on the evaporator, the middle part of the heater may be deformed under the action of gravity due to its slender structure. In order to prevent the heater from being damaged due to deformation, a support is used to support the heater to prevent the heater from deformation.

[0033] In some technical solutions, optionally, the support member includes: fins and / or heat conducting sheets.

[0034] The fins on the evaporator coil can be used to support the heater. This allows the inherent structure of the evaporator to be used to support the heater, simplifying the evaporator's structure. To ensure the fins can stably support the heater, a structure compatible with the heater can be machined onto the fins, thereby improving the stability of the heater support.

[0035] A heat conducting sheet may be installed on the sub-tube body to support the supporting member and prevent the supporting member from being deformed.

[0036] Since there are multiple heaters, fins can be used as the support structure to support the heaters. In locations where it is inconvenient to use fins, heat conducting sheets can be used to support the heaters.

[0037] The fins and heat conducting plates are both good heat conductors, transferring heat from the heater to the surface of the evaporator coil, thereby defrosting. The heater can defrost through both heat radiation and heat transfer, which helps improve defrosting efficiency.

[0038] In some technical solutions, optionally, the support member is provided with a flange, and the flange is in contact with the surface of the heater.

[0039] The support member supports the heater, so it is subject to a portion of the weight of the heater, and the support force exerted by the support member on the heater also acts on the heater. The support member is provided with a flange that fits against the heater. The flange is used to increase the contact area between the support member and the heater, thereby increasing the force-bearing area of ​​the heater surface. The portion of the heater surface in contact with the flange is used to share the force, avoiding damage to the heater due to insufficient contact area.

[0040] In some technical solutions, optionally, the evaporator assembly further includes: a reflective plate connected to the evaporator, the reflective plate being located between the first heater and the water receiving tray, and being used to reflect heat radiated by the first heater.

[0041] The reflective plate can reflect part of the heat generated by the first heater. The reflective plate can reflect the heat generated by the first heater toward between the evaporator coils, so that more heat is radiated to the surface of the evaporator coils, thereby improving heat utilization and improving the defrosting effect.

[0042] In some technical solutions, optionally, a hollow hole is provided on the reflective plate, and the hollow hole faces the water receiving tray.

[0043] Part of the heat generated by the first heater can be transferred to the water receiving tray through the hollow hole, thereby heating the water receiving tray and preventing the water on the water receiving tray from freezing due to low temperature. The water on the water receiving tray can be discharged smoothly, ensuring the drainage effect of the water receiving tray.

[0044] In some technical solutions, optionally, a heat reflecting layer is provided on the surface of the heater, and the heat reflecting layer is used to reflect heat.

[0045] A heat-reflective film can be coated on the surface of the heater. The heat generated by the first heater is transferred to the outside. When part of the heat is transferred back to the vicinity of the heater, the heat-reflective layer can reflect the heat, so that the heat can be transferred away from the heater, ensuring the heating effect on the frost on the surface of the evaporator coil.

[0046] In a second aspect, the present invention provides a refrigerator comprising the evaporator assembly in the first aspect.

[0047] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0049] Figure 1 A schematic structural diagram of an evaporator assembly in an embodiment of the present utility model is shown;

[0050] Figure 2 One of the structural diagrams of the heater in the embodiment of the present utility model is shown;

[0051] Figure 3 A schematic diagram of the coordination structure of the side plate and the heater in an embodiment of the present utility model is shown;

[0052] Figure 4 A schematic diagram of the matching structure of the support member and the heater in an embodiment of the present utility model is shown;

[0053] Figure 5 The second structural diagram of the heater in the embodiment of the present utility model is shown.

[0054] Reference numerals:

[0055] 100 evaporator assembly, 110 evaporator, 111 evaporator coil, 112 sub-tube body, 113 slot, 114 side plate, 120 water tray, 121 drain outlet, 130 heater, 131 first heater, 132 first heating section, 133 second heating section, 134 graphene heating plate, 135 quartz glass shell, 136 rubber plug, 137 second heater, 140 support, 141 fin, 142 heat conducting plate, 143 flange, 150 reflective plate, 151 hollow hole, 160 heat reflecting layer. DETAILED DESCRIPTION

[0056] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0058] Refer to the following Figures 1 to 5 An evaporator assembly and a refrigerator according to some embodiments of the present invention are described.

[0059] Combine Figure 1 and Figure 2 As shown, in an embodiment of the present invention, an evaporator assembly 100 is proposed. The evaporator assembly 100 is used for a refrigerator. The evaporator assembly 100 includes: an evaporator 110 and a plurality of heaters 130. The heaters 130 are connected to the evaporator 110. The plurality of heaters 130 are arranged along a first direction ( Figure 1 The evaporator 110 is arranged between two adjacent heaters 130. The heater 130 includes a first heating section 132 and a second heating section 133. The first heating section 132 and the second heating section 133 are arranged along the length direction of the heater 130 ( Figure 2 The arrow at B in the figure points to the distribution), the power density of the first heating section 132 and the second heating section 133 is different.

[0060] During the operation of the refrigerator, frost may form on the surface of the evaporator 110 , so the heater 130 needs to be used to defrost the surface of the evaporator 110 .

[0061] The heater 130 is mounted on the evaporator 110. During operation, the heat generated by the heater 130 is used to melt frost on the surface of the sub-tube 112. Multiple heaters 130 are provided, distributed along a first direction, with a portion of the evaporator 110 disposed between adjacent heaters 130. The spacing of the heaters 130 ensures uniform heating of the evaporator 110, effectively melting frost on its surface and improving defrosting performance.

[0062] In the length direction of the heater 130 , the first portion of the heater 130 is set as the first heating section 132 , and the second portion of the heater 130 is set as the second heating section 133 . The first heating section 132 and the second heating section 133 are located at different positions.

[0063] Since the power density of the first heating segment 132 and the second heating segment 133 is different, the heat generated per unit time by the first heating segment 132 and the second heating segment 133 is different, and the defrosting efficiency of the first heating segment 132 and the second heating segment 133 for frost at different positions is also different.

[0064] In the evaporator 110, there may be locations with large localized frost areas and thick frost thickness, as well as locations that are less susceptible to frost formation. Therefore, targeted defrosting should be performed for different locations in the evaporator 110. This solution defines two sections in the heater 130 with different power densities. For example, the power density of the first heating section 132 is greater than the power density of the second heating section 133. These two sections can correspond to different locations in the evaporator 110. For locations with large localized frost areas and thick frost thickness, the first heating section 132 can be used to correspond to these sections, while for locations that are less susceptible to frost formation, the second heating section 133 can be used to correspond to these sections. This approach achieves the goal of segmented power density, which is conducive to improving the defrosting effect.

[0065] In other embodiments, the heater may further include a third heating section, and the number of heating sections is not limited.

[0066] like Figure 2 As shown, in some embodiments, optionally, the heater 130 further includes: a graphene heating sheet 134 , and the width and / or thickness of the graphene heating sheet 134 are different in the first heating section 132 and the second heating section 133 .

[0067] The graphene material has extremely high thermal conductivity and can quickly transfer heat, causing the temperature around the heater 130 to rise rapidly, which is beneficial to improving the defrosting efficiency.

[0068] The resistance value of graphene will affect the power density of graphene, and the width and thickness of graphene will affect the resistance value of graphene. Therefore, the resistance value of graphene can be changed by changing the width and / or thickness of graphene. In this solution, a graphene heating plate 134 is provided in both the first heating section 132 and the second heating section 133. The graphene heating plate 134 serves as a heat source for the first heating section 132 and the second heating section 133. Moreover, in the first heating section 132 and the second heating section 133, the width and / or thickness of the graphene heating plate are different, thereby making the power density of graphene in the first heating section 132 and the second heating section 133 different, so that the first heating section 132 and the second heating section 133 have different heating efficiencies.

[0069] The graphene heating sheet 134 can change the resistance value of the region by changing the width and longitudinal dimensions, thereby achieving the purpose of segmented power distribution.

[0070] In other embodiments, other materials may be selected as the heating source. For example, a resistance wire may be used as the heating source, and the resistance of the resistance wire at different positions is different, thereby forming segmented heating.

[0071] like Figure 2As shown, in some embodiments, optionally, the heater 130 further includes: a quartz glass shell 135 , and the graphene heating plate 134 is located in the quartz glass shell 135 .

[0072] The graphene heating sheet 134 is installed in the quartz glass shell 135, which protects the graphene heating sheet 134. The quartz glass shell 135 is not easy to affect the transfer of heat, thereby ensuring the defrosting effect of the graphene heating sheet 134 on the surface of the sub-tube 112.

[0073] The thermal expansion coefficient of the quartz glass shell 135 is low, so that the quartz glass shell 135 is not easily deformed by the influence of temperature.

[0074] In a possible application, the quartz glass housing 135 is made of quartz glass with high light transmittance and low thermal expansion coefficient.

[0075] In other embodiments, glass made of other materials may also be used as the outer shell.

[0076] Combine Figure 1 and Figure 2 As shown, in some embodiments, optionally, the heater 130 further includes: a rubber plug 136 , the rubber plug 136 is located at both ends of the quartz glass shell 135 , and the rubber plug 136 is connected to the evaporator 110 .

[0077] Rubber plugs 136 are installed at both ends of the quartz glass housing 135 . The rubber plugs 136 are used to connect to the evaporator 110 . Therefore, the heater 130 is installed on the evaporator 110 through the rubber plugs 136 .

[0078] The rubber plug 136 is soft in texture, making it easy to deform. When the rubber plug 136 is connected to the evaporator 110, the rubber plug 136 can fit tightly with the installation position, making it difficult for the rubber plug 136 to move away from the installation position, thereby improving the connection stability between the heater 130 and the evaporator 110.

[0079] The rubber plug 136 is designed to cooperate with the evaporator 110 to enhance its anti-drop ability and strengthen its waterproof ability through physical cooperation.

[0080] In order to ensure the radiation effect of the heater 130, it is necessary to ensure that the radiation surface is perpendicular to the direction of gravity during installation.

[0081] In other embodiments, a silicone stopper may be used instead of the rubber stopper 136 .

[0082] In some embodiments, the evaporator 110 optionally includes an evaporator coil 111, which includes a plurality of sub-tubes 112 sequentially distributed along a first direction. The evaporator assembly 100 further includes a water receiving tray 120, which is connected to the evaporator 110 and is located on one side of the evaporator 110 along the first direction. The water receiving tray 120 is provided with a drain port 121. The plurality of heaters 130 include a first heater 131. Along the first direction, the distance between the other side of the evaporator 110 and the first heater 131 is L1, and the distance between the first heater 131 and the water receiving tray 120 is L2, where L1>L2.

[0083] Along the first direction, a water receiving tray 120 is arranged on one side of the evaporator 110. The water receiving tray 120 is used to collect water after defrosting. That is, after the frost on the surface of the evaporator 110 melts, it drips into the water receiving tray 120. A drain outlet 121 is provided on the water receiving tray 120. The water collected in the water receiving tray 120 is discharged outward through the drain outlet 121 to avoid water accumulation on the water receiving tray 120 for a long time.

[0084] One of the multiple heaters 130 is set as the first heater 131, the other side of the evaporator 110 is away from the water receiving pan 120, and the distance between the other side of the evaporator 110 and the first heater 131 is L1, and the distance between the first heater 131 and the water receiving pan 120 is L2, L1>L2. Therefore, the distance between the first heater 131 and the water receiving pan 120 is small, and the first heater 131 is installed close to the water receiving pan 120. The heat generated by the first heater 131 can effectively heat the water receiving pan 120, preventing the water on the water receiving pan 120 from freezing due to the low temperature. The water on the water receiving pan 120 can be discharged smoothly, ensuring the drainage effect of the water receiving pan 120.

[0085] like Figure 1 As shown, in some embodiments, optionally, along the first direction, the first heater 131 is located between one side of the evaporator 110 and the water receiving tray 120 .

[0086] The first heater 131 is installed between the first side of the evaporator 110 and the water receiving pan 120. The distance between the first heater 131 and the water receiving pan 120 is relatively small, so the heat generated by the first heater 131 can effectively heat the water receiving pan 120. Furthermore, the first heater 131 faces directly toward the water receiving pan 120, and no sub-tube 112 is disposed between the first heater 131 and the water receiving pan 120. This prevents the sub-tube 112 from blocking the heat radiated from the first heater 131 toward the water receiving pan 120. The first heater 131 can directly radiate heat toward the water receiving pan 120, thereby improving the heating effect of the water receiving pan 120, preventing ice from forming on the surface of the water receiving pan 120, and preventing the drain outlet 121 from being clogged by ice.

[0087] In other embodiments, a sub-tube 112 may also be arranged between the first heater 131 and the water receiving tray 120 .

[0088] like Figure 1 As shown, in some embodiments, optionally, the heater 130 and the sub-tube 112 extend in the same direction.

[0089] The extension direction of the heater 130 is the same as the extension direction of the sub-tube body 112. Therefore, in the length direction of the sub-tube body 112, all parts of the sub-tube body 112 can be effectively heated by the heater 130, thereby avoiding the problem of local frost on the sub-tube body 112 and improving the defrosting effect on the surface of the sub-tube body 112.

[0090] Combine Figure 1 and Figure 2 As shown, in some embodiments, optionally, the length of the heater 130 is L3, and along the first direction, the width of the heater 130 is W, and L3>W.

[0091] The heater 130 is relatively long, while its width along the first direction is relatively short, resulting in a slender structure. With this structure, a larger portion of the heater 130's surface can face the sub-tube 112, reducing ineffective radiation from the heater 130 and, consequently, ineffective energy consumption, thereby improving the heating efficiency of the heater 130.

[0092] In a possible application, the length of the heater 130 is much greater than the width of the heater 130 . This characteristic can reduce more than 80% of ineffective radiation, achieve the purpose of upper and lower double-sided radiation, and reduce ineffective energy consumption.

[0093] Combine Figure 1 and Figure 3 As shown, in some embodiments, optionally, a slot 113 is provided on the evaporator 110 , and the heater 130 is detachably connected to the slot 113 .

[0094] The evaporator 110 is formed with a slot 113, which is used to match the heater 130 and the heater 130 can be installed on the slot 113. The slot 113 limits the heater 130 to prevent the heater 130 from shaking relative to the evaporator 110, thereby improving the installation stability of the heater 130.

[0095] In a possible application, the evaporator 110 also includes two side plates 114, and both sides of the evaporator coil 111 pass through the side plates 114. The heater 130 is installed on the side plates 114. The side plates 114 are provided with slots 113 for assembling the heater 130.

[0096] Figure 3 The structure of the slot 113 is merely used to exemplify that the slot 113 can support and limit the heater 130 . The structure of the slot 113 may be in other forms.

[0097] like Figure 1 As shown, in some embodiments, optionally, the evaporator 110 further includes: a support member 140 , the support member 140 is connected to the sub-tube body 112 , and the support member 140 is used to support the heater 130 .

[0098] When the heater 130 is installed on the evaporator 110, since the heater 130 is a slender structure, the middle part of the heater 130 may be deformed under the action of gravity. In order to prevent the heater 130 from being damaged due to deformation, the support member 140 is used to support the heater 130 to prevent the heater 130 from being deformed.

[0099] like Figure 1 As shown, in some embodiments, optionally, the support member 140 includes: fins 141 and / or heat conducting sheets 142 .

[0100] The fins 141 provided on the evaporator coil 111 can be used to support the heater 130. That is, the inherent structure of the evaporator 110 is used to support the heater 130, thereby simplifying the structure of the evaporator 110. To ensure that the fins 141 can stably support the heater 130, the fins 141 can be machined to have a structure that is compatible with the heater 130, thereby improving the support stability of the heater 130.

[0101] A heat conducting sheet 142 may be installed on the sub-tube body 112 to support the support member 140 and prevent the support member 140 from being deformed.

[0102] Since there are multiple heaters 130 , fins 141 can be used as support structures to support the heaters 130 . In locations where it is inconvenient to use the fins 141 , heat conducting sheets 142 can be used to support the heaters 130 .

[0103] Fins 141 and heat conducting fins 142 both have good heat conduction properties and can transfer heat generated by heater 130 to the surface of evaporator coil 111, thereby performing defrosting. Heater 130 can perform defrosting by both heat radiation and heat transfer, which helps improve defrosting efficiency.

[0104] In one possible application, the multiple heaters 130 also include a second heater 137, which is located in the middle of the multiple sub-tubes 112. The slots 113 cooperate with the special-shaped fins 141 to provide support and heat dissipation for the second heater 137. In addition to the side plates 114 on both sides of the first heater 131, the heat conducting plate 142 can also provide support and heat dissipation, and can provide heat for the drain outlet 121.

[0105] Combine Figure 1 and Figure 4 As shown, in some embodiments, optionally, the support member 140 is provided with a flange 143 , and the flange 143 is in contact with the surface of the heater 130 .

[0106] The support member 140 supports the heater 130, and thus is subject to a portion of the weight of the heater 130. The support member 140 also exerts a supporting force on the heater 130. A flange 143 is provided on the support member 140, which fits in contact with the heater 130. The flange 143 is used to increase the contact area between the support member 140 and the heater 130, thereby increasing the surface area of ​​the heater 130 that receives force. The portion of the heater 130 surface that contacts the flange 143 is used to share the force, thereby preventing damage to the heater 130 caused by an insufficient contact area.

[0107] The special-shaped fins 141 and the heat conducting sheet 142 are both designed with flanges 143 to avoid scratching the quartz glass housing 135 .

[0108] like Figure 1 As shown, in some embodiments, optionally, the evaporator assembly 100 further includes: a reflective plate 150, which is connected to the evaporator 110, and is located between the first heater 131 and the water receiving tray 120, and is used to reflect the heat radiated by the first heater 131.

[0109] The reflective plate 150 can reflect part of the heat generated by the first heater 131. The reflective plate 150 can reflect the heat generated by the first heater 131 toward between the evaporator coils 111, so that more heat is radiated to the surface of the evaporator coils 111, thereby improving heat utilization and improving the defrosting effect.

[0110] The reflective plate 150 in this embodiment is a V-shaped plate, and is used to reflect part of the radiated heat to the evaporator 110 area to enhance defrosting.

[0111] like Figure 1 As shown, in some embodiments, optionally, a hollow hole 151 is provided on the reflective plate 150 , and the hollow hole 151 faces the water receiving tray 120 .

[0112] Part of the heat generated by the first heater 131 can be transferred to the water receiving tray 120 through the hollow hole 151, thereby heating the water receiving tray 120 and preventing the water on the water receiving tray 120 from freezing due to the low temperature. The water on the water receiving tray 120 can be discharged smoothly, ensuring the drainage effect of the water receiving tray 120.

[0113] The hollow design can take into account the heat of the water receiving tray 120 area and prevent residual ice from remaining at the water receiving tray 120 and the drain outlet 121.

[0114] like Figure 5 As shown, in some embodiments, optionally, a heat reflecting layer 160 is provided on the surface of the heater 130, and the heat reflecting layer 160 is used to reflect heat.

[0115] Heater 130 can be coated with a heat-reflecting film. Heat generated by first heater 131 is transferred to the outside. When some of the heat is transferred back to the vicinity of heater 130, heat-reflecting layer 160 can reflect the heat, thereby transferring the heat away from heater 130, thereby ensuring a heating effect on frost on the surface of evaporator coil 111. The heat-reflecting film can achieve the same effect as reflective plate 150.

[0116] Defrosting is performed in the manner described in the above embodiment. After the refrigerator enters the defrost state, the two heaters 130 start working at the same time. The advantages of short-time heating, double-sided radiation only, and high emissivity enable most areas of the evaporator 110 to quickly enter the radiation heat exchange defrost state. Compared with the natural convection defrost in the related art, the upper area of ​​the evaporator 110 in this embodiment saves the time for natural convection heating, and at the same time enhances the radiation heat exchange, greatly speeds up the defrost rate, reduces the defrost time, shortens the natural warming time, and reduces the room temperature rise.

[0117] Single-tube natural convection defrosting is inefficient, and evenly distributed heating components cannot adapt to the actual frosting state of the evaporator, resulting in excess heat in certain areas. This embodiment uses dual graphene quartz glass tubes arranged vertically to enhance defrosting radiation heat transfer. The segmented power distribution design matches the amount of frost, improving defrost efficiency, shortening defrost time, and reducing defrosting temperature rise in food.

[0118] In an embodiment of the present utility model, a refrigerator is proposed, which includes an evaporator assembly as in any of the above embodiments and can achieve the same technical effects, which will not be described in detail here.

[0119] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0120] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0121] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An evaporator assembly, characterized in that: include: evaporator; a plurality of heaters connected to the evaporator, wherein the plurality of heaters are distributed along a first direction, and a portion of the evaporator is disposed between two adjacent heaters; The heater includes a first heating segment and a second heating segment. The first heating segment and the second heating segment are distributed along the length direction of the heater. The power density of the first heating segment and the second heating segment are different.

2. The evaporator assembly according to claim 1, wherein The heater further comprises: The graphene heating sheet has different widths and / or thicknesses in the first heating section and the second heating section.

3. The evaporator assembly according to claim 2, wherein: The heater further comprises: A quartz glass shell, wherein the graphene heating sheet is located in the quartz glass shell.

4. The evaporator assembly according to claim 3, wherein: The heater further comprises: Rubber plugs are located at both ends of the quartz glass shell and are connected to the evaporator.

5. The evaporator assembly according to any one of claims 1 to 4, characterized in that The evaporator includes an evaporator coil, and the evaporator coil includes a plurality of sub-tubes distributed sequentially along a first direction; The evaporator assembly further comprises: a water receiving tray connected to the evaporator, the water receiving tray being located on one side of the evaporator along the first direction, and having a drain port; The multiple heaters include a first heater. Along the first direction, the distance between the other side of the evaporator and the first heater is L1, and the distance between the first heater and the water receiving tray is L2, where L1>L2.

6. The evaporator assembly according to claim 5, characterized in that The evaporator assembly further comprises: A support member is connected to the sub-tube body, and the support member is used to support the heater.

7. The evaporator assembly according to claim 6, wherein: The support member comprises: fins and / or heat spreaders.

8. The evaporator assembly according to claim 6, wherein: The support member is provided with a flange, and the flange is in contact with the surface of the heater.

9. The evaporator assembly according to claim 6, wherein: The evaporator assembly further comprises: A reflective plate is connected to the evaporator and is located between the first heater and the water receiving tray. The reflective plate is used to reflect heat radiated by the first heater.

10. A refrigerator, characterized in that: include: An evaporator assembly as claimed in any one of claims 1 to 9.

Images