Refrigerator with optimized evaporator mounting structure

Abstract

The invention provides a refrigerator with an optimized evaporator mounting structure, which comprises a refrigerator body, a refrigerating chamber is defined at the lower part of the refrigerator body, an evaporator cavity for arranging a refrigerator evaporator is formed at the bottom of the refrigerating chamber, and step parts with the same height are formed on the two sides of the evaporator cavity; the fixed brackets are respectively arranged on the step surfaces of the two step parts; the whole evaporator is in a flat cuboid shape, a fixing plate is arranged at the top of the evaporator, the fixing plate is provided with an installation part which extends outwards to protrude out of the two sides of the evaporator and is matched with the fixing support, and therefore the installation part is arranged on the fixing plate in an erecting mode, and the evaporator is installed in the evaporator cavity. According to the refrigerator, the installation mode of the evaporator is optimized, the utilization efficiency of the space of the refrigerator is improved, a user can take and place the refrigerator conveniently, and the noise problem caused by position change of the evaporator is avoided.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 201810332207.7, application date April 13, 2018, and application name “Refrigerator with optimized evaporator mounting structure”. Technical Field

[0002] The invention relates to the field of household electrical appliances, and in particular to a refrigerator with an optimized evaporator mounting structure. Background Art

[0003] The refrigerator is one of the indispensable household appliances in people's daily life.

[0004] Existing refrigerators are generally equipped with multiple storage compartments, which can be configured as refrigeration compartments, variable temperature compartments or fresh-keeping compartments, and freezer compartments according to different uses. These compartments are generally arranged from top to bottom. In order to save space, the freezer compartment at the bottom is close to the ground, which makes it very inconvenient for users to use the freezer compartment. They often need to squat to operate, which affects the user experience.

[0005] In addition, when the freezer compartment is a drawer-type compartment, since a press compartment is often provided at the rear side of the bottom of the refrigerator, the press compartment needs to occupy a part of the drawer space, so that the drawer needs to be constructed in a special shape, resulting in that the bottom space of the refrigerator cannot be fully utilized. Moreover, the bottom drawer of the refrigerator also needs to be set very deep, and the stored items need to be stacked when in use. When users want to take out items, they need to spend too much time to search, which brings inconvenience. Summary of the invention

[0006] One object of the present invention is to provide a method for increasing the height of the storage space at the bottom of a refrigerator from the ground, thereby improving the user experience.

[0007] A further object of the present invention is to improve the utilization efficiency of the refrigerator storage space.

[0008] Another further object of the present invention is to reduce the noise of refrigerator operation and improve the reliability of long-term operation of the refrigerator.

[0009] In particular, the present invention provides a refrigerator with an optimized evaporator mounting structure, comprising: a box body, a freezing chamber is defined at the lower portion of which, an evaporator cavity for arranging the refrigerator evaporator is formed at the bottom of the freezing chamber, wherein two sides of the evaporator cavity form step portions of the same height; a fixing bracket, which is respectively arranged on the step surfaces of the two step portions; and an evaporator, which is in the shape of a flat rectangular parallelepiped as a whole, and a fixing plate is arranged on the top of the evaporator, the fixing plate having a mounting portion extending outward to protrude from both sides of the evaporator and cooperating with the fixing bracket, so that the evaporator is installed in the evaporator cavity by placing the mounting portion on the fixing plate.

[0010] Optionally, each side of the fixing plate has two or more mounting portions, each mounting portion is provided with an elastic pad, and contacts the fixing bracket via the elastic pad.

[0011] Optionally, a ventilation hole is opened at the front of the fixing plate so that the upper front of the evaporator is connected to the outside; and the fins of the evaporator are arranged parallel to the front-to-back direction of the refrigerator.

[0012] Optionally, the refrigerator further comprises: an evaporator front baffle, which serves as a front wall of the evaporator cavity and is spaced apart from the front end of the evaporator; and an evaporator cover, which comprises an inclined portion extending obliquely upward from the top of the evaporator front baffle and an upper cover portion connected to the inclined portion and arranged above the evaporator; and a freezing compartment forms a freezing storage cavity above the upper cover portion, and a freezing return air outlet connecting the freezing storage cavity and the evaporator cavity is provided on the inclined portion.

[0013] Optionally, the refrigeration return air outlet includes a plurality of return air grilles spaced apart longitudinally, and the upper edge of each return air grille is provided with a shielding plate protruding from the outer surface of the inclined portion to prevent foreign matter from falling into the refrigeration return air outlet from above.

[0014] Optionally, the above-mentioned refrigerator also includes: an air induction plate, which is arranged between the upper cover and the fixed plate, and its rear part is in contact with the rear part of the fixed plate, and its front part is upwardly raised, defining an air induction channel with the front part of the fixed plate, so that the refrigerated return air flow from the refrigerated return air outlet is introduced into the ventilation hole and / or the front end of the evaporator through the air induction channel.

[0015] Optionally, the refrigerator further comprises: an air supply duct, which is arranged at the rear of the freezer compartment and has an air supply port at its lower end leading to the rear of the evaporator cavity, and supplies air to the freezer compartment by means of a freezing air inlet leading to the freezer compartment; and an evaporator fan, which is arranged at the air supply port to deliver the air in the evaporator cavity into the air supply duct, and the evaporator fan is configured to be inclined at a set angle relative to the evaporator.

[0016] Optionally, the cabinet further defines at least one refrigerating compartment above the freezing compartment, and the air supply duct extends upward to the rear of the refrigerating compartment, and air is supplied to the refrigerating compartment by means of a refrigerating air inlet leading to the refrigerating compartment; and the refrigerator further comprises: a return air duct, which is arranged on at least one side of the cabinet, the upper end of which is connected to the refrigerating compartment, and the lower end of which is connected to the front of the evaporator chamber, so as to guide the return air of the refrigerating compartment back to the evaporator chamber.

[0017] Optionally, the cabinet is further formed with a compressor compartment at the rear of the freezer compartment, the top wall of the compressor compartment is located below the air supply duct and lower than the top of the evaporator, and the bottom wall of the compressor compartment is lower than the lowest point of the bottom wall of the evaporator cavity; and the refrigerator also includes: a compressor, a condenser and a heat dissipation fan arranged laterally at intervals inside the compressor compartment.

[0018] Optionally, the bottom wall of the evaporator chamber is gradually concave toward the center, and a drainage hole is opened at the lowest point; and the refrigerator also includes: an evaporating dish arranged in the press chamber, and a drainage pipe connected to the drainage hole, the drainage pipe extends obliquely downward from the drainage hole to the evaporating dish to drain the condensed water of the evaporator to the evaporating dish.

[0019] In order to solve the problem of inconvenience for users due to the low position of the refrigerator, the refrigerator with optimized evaporator installation structure of the present invention changes the position of the evaporator in the refrigeration system from the rear of the freezer compartment to the lower part of the freezer compartment, and changes the vertical installation mode of the evaporator to a horizontal placement, thereby increasing the height of the freezer drawer for easier user operation, and since the evaporator is no longer arranged at the back, the distance in the front and rear directions of the refrigerator can be reduced, thereby improving the utilization efficiency of the storage space of the refrigerator.

[0020] Furthermore, the refrigerator of the present invention avoids occupying the bottom storage space by adjusting the positional relationship between the evaporator cavity and the compressor compartment, thereby solving the inconvenience caused by the existing bottom storage drawer being too deep and having a small unfolding area.

[0021] Furthermore, the refrigerator of the present invention also uses elastic pads to fix the evaporator and the cabinet, thereby avoiding the trouble caused to the user by vibration noise during operation when the evaporator is placed forward, and further improving the user experience.

[0022] Furthermore, the refrigerator of the present invention optimizes the air duct and heat dissipation structure, is particularly suitable for built-in refrigerators, and expands the usage scenarios.

[0023] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0025] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0027] Figure 3 is an exploded view of a refrigerator body according to an embodiment of the present invention;

[0028] Figure 4is a structural exploded view of a bottom component of a refrigerator body according to an embodiment of the present invention;

[0029] Figure 5 is a schematic diagram of an evaporator installation structure of a refrigerator according to an embodiment of the present invention;

[0030] Figure 6 is a front view of a refrigerator body according to an embodiment of the present invention;

[0031] Figure 7 is along Figure 6 A schematic cross-sectional view taken along the section line AA in FIG. ; and

[0032] Figure 8 It is a schematic structural diagram of a refrigerator intermediate compressor compartment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present embodiment mainly provides a refrigerator 10 with an optimized evaporator installation structure. The refrigerator 10 is particularly suitable for use as a built-in refrigerator, which further saves space and has a more unified and coordinated appearance with the surrounding environment.

[0034] Figure 1 is a schematic diagram of a refrigerator 10 according to an embodiment of the present invention, Figure 2 is a schematic diagram of a cabinet 100 of a refrigerator 10 according to an embodiment of the present invention (in order to illustrate the internal structure of the cabinet 100, the outer shell of the cabinet 100 is hidden in this figure), and Figure 3 1 is an exploded view of a body 100 of a refrigerator 10 according to an embodiment of the present invention.

[0035] The refrigerator 10 of this embodiment may include: a box body 100, a door body (not shown in the figure), a refrigeration system, etc. The box body 100 includes: a box shell, a box liner, a heat insulation layer and other accessories. The box shell is the outer structure of the refrigerator 10 and protects the entire refrigerator 10. In order to isolate heat conduction from the outside, there is a heat insulation layer between the box shell and the box liner, and the heat insulation layer can be processed by a foaming process (in order not to block other components, the heat insulation layer is not shown in the drawings).

[0036] The box body 100 defines at least one storage compartment with an open front side, usually multiple, such as a refrigeration compartment 112, a freezer compartment 111, a variable temperature compartment 113, etc. The specific number and function of the storage compartments can be configured according to pre-determined requirements. Figure 1 The three storage compartments (refrigerating compartment 112, variable temperature compartment 113, freezing compartment 111) arranged vertically from top to bottom shown in the figure are only exemplary. In this embodiment, the number, structure, and function of each storage compartment can be configured according to specific circumstances.

[0037] The number of door bodies can match the number of storage compartments, so that the storage compartments can be opened one by one. For example, a refrigeration door body 142, a freezing door body 141, and a variable temperature door body 143 can be provided for the refrigeration compartment 112, the freezing compartment 111, and the variable temperature compartment 113, respectively. In some optional embodiments, the door body can also be in the form of a swing door, a double-opening door, a side sliding door, a drawer door, etc. For example, the refrigeration compartment 112 can be a double-opening door, and the variable temperature compartment 113 and the freezing compartment 111 can use a drawer-type structure.

[0038] The refrigeration system can be a refrigeration cycle system composed of a compressor 200, a condenser 500, a throttling device and an evaporator 300. The evaporator 300 is configured to provide cold air to the storage room. The transfer of cold air can be achieved through an air duct system, and air circulation is achieved through a fan. Since the refrigeration system itself is well known and easy to implement by those skilled in the art, in order not to cover up and blur the inventive point of the present application, the working principle of the refrigeration system will not be described in detail below. In the present embodiment, the compressor 200, the condenser 500, and the evaporator 300 can form an assembly with their respective accessory parts. The refrigerator 10 has an air duct system, and a fan is used to generate a circulating airflow from the compartment to the evaporator 300 to achieve air-cooled refrigeration.

[0039] In the refrigerator 10 of this embodiment, the lowest compartment of the cabinet 100 is preferably configured as a freezing compartment 111, and an evaporator cavity 151 for arranging the refrigerator evaporator 300 is formed at the bottom of the freezing compartment 111. The evaporator cavity 151 is located in the front area of ​​the bottom of the freezing compartment 111 to provide space for the air supply duct 410 and the evaporator fan 220 at the rear thereof.

[0040] During normal operation of the evaporator 300, vibrations will be generated due to temperature changes. In the existing refrigerator, since the evaporator 300 is located at the rear of the refrigerator and is blocked by the heat insulation layer, the noise generated by vibrations will be greatly reduced. However, the refrigerator 10 of this embodiment sets the evaporator 300 at the front of the bottom of the refrigerator 10. If it is fixed by the inner liner of the box, noise will be generated when the evaporator 300 vibrates, thereby affecting the normal use of the user. Therefore, the refrigerator 10 of this embodiment improves the fixing structure of the evaporator 300 to reduce the impact of noise.

[0041] Figure 4 1 is a structural exploded view of the bottom component of the cabinet 100 of the refrigerator 10 according to one embodiment of the present invention. Figure 5 1 is a schematic diagram of the installation structure of the evaporator 300 of the refrigerator 10 according to an embodiment of the present invention. Figure 6 is a front view of a cabinet 100 of a refrigerator 10 according to an embodiment of the present invention, Figure 7 is along Figure 6The schematic cross-section taken along the section line AA in FIG. 1 only shows the cross-sectional structure of the evaporator cavity 151 at the bottom of the refrigerator 10. Steps 221 of the same height are formed on both sides of the evaporator cavity 151, that is, the width of the lower two sides of the evaporator cavity 151 is narrower, and the width of the upper two sides of the evaporator cavity 151 is widened by the step portions 221. Fixed brackets 222 are respectively provided on the step surfaces of the two step portions 221.

[0042] The evaporator 300 is in the shape of a flat rectangular parallelepiped as a whole, wherein the length direction of the evaporator 300 is the left-right lateral direction of the refrigerator 10, the width direction of the evaporator 300 is the front-to-back depth direction of the refrigerator 10, and the thickness of the evaporator 300 is the up-down direction of the refrigerator 10. The thickness of the evaporator 300 is smaller than the length and width of the evaporator 300, and a fixing plate 223 is provided on the top of the evaporator 300. The fixing plate 223 has a mounting portion 226 extending outward to protrude from both sides of the evaporator 300 and cooperating with the fixing bracket 222, so that the evaporator 300 is installed in the evaporator cavity 151 by placing the mounting portion 226 on the fixing plate 223. The fins of the evaporator 300 are arranged parallel to the front-to-back direction of the refrigerator 10, so that the airflow can flow along the direction of the fins and fully exchange heat.

[0043] Each side of the fixing plate 223 may have two or more mounting portions 226, each mounting portion 226 is provided with an elastic pad 224, and the elastic pad 224 contacts the fixing bracket 222. In some optional embodiments, the four corners of the fixing plate 223 protrude outward to form the mounting portion 226, and the mounting portion 226 is provided with an elastic pad 224, and the elastic pad 224 is used to contact the fixing bracket 222. The elastic pad 224 can be made of a material with a certain elasticity such as rubber, so that when the evaporator 300 vibrates, the collision between the evaporator 300 and the inner tank can be avoided to generate noise. The matching structure of the evaporator 300 and the fixing bracket 222 can use a mechanical matching structure such as a snap-on, a pin, etc., so that the evaporator 300 is directly fixed on the inner tank, and the installation is more reliable.

[0044] Figure 5 In the structure shown in , the fixing bracket 222 has an upwardly protruding pin, and the elastic pad 224 and the mounting portion 226 respectively have pin holes. The evaporator 300 is fixed by the pin structure, the installation is simple and reliable, and the elastic pad 224 is used to avoid the noise of the evaporator 300.

[0045] The front part of the evaporator chamber 151 has an evaporator front baffle 212. The evaporator front baffle 212 serves as the front wall of the evaporator chamber 151 and is spaced apart from the front end of the evaporator 300. The space between the evaporator front baffle 212 and the front end of the evaporator 300 serves as a return air area for the return airflow from the refrigerating compartment 112, the temperature-changing compartment 113, and the freezing compartment 111 to be discharged. For example, the return air duct 420 can lead the return air from the refrigerating compartment 112 back to the spaced area.

[0046] The humidity of the return air increases, so the area where the front end of the evaporator 300 contacts the return air is prone to frost, which may cause poor return air flow. To solve this problem, a return air bypass channel may be provided on the upper part of the evaporator 300. A ventilation hole 216 is provided on the front part of the fixing plate 223 to connect the upper front part of the evaporator 300 with the outside.

[0047] The upper part of the evaporator 300 also has an evaporator cover 210, which serves as the top wall of the evaporator cavity 151, thereby separating the storage area of ​​the freezing chamber 111 and the evaporator cavity 151. The evaporator cover 210 includes an inclined portion 214 extending obliquely upward from the top of the evaporator front baffle 212 and an upper cover portion 215 connected to the inclined portion 214 and arranged above the evaporator 300; and the freezing chamber 111 forms a freezing storage cavity above the upper cover portion 215, and a freezing return air port 217 connecting the freezing storage cavity and the evaporator cavity 151 is opened on the inclined portion 214. The airflow entering from the refrigerated return air port 217 can enter the gap between the evaporator front baffle 212 and the front end of the evaporator 300 and enter from the front of the evaporator 300, or it can enter the heat exchange area of ​​the evaporator 300 from the upper part of the evaporator 300 through the ventilation hole 216 of the fixed plate 223, thereby avoiding the increase of return air resistance due to frost, avoiding frequent defrosting, and improving heat exchange efficiency.

[0048] The refrigerated return air vent 217 includes a plurality of return air grilles spaced apart longitudinally, and the upper edge of each return air grille is provided with a shielding plate 218 (similar to a structure of a convex eave) protruding from the outer surface of the inclined portion 214 to prevent foreign matter from falling into the refrigerated return air vent 217 from above.

[0049] There is also an air induction plate 232 between the upper cover 215 and the fixed plate 223. The rear part of the air induction plate 232 is in contact with the rear part of the fixed plate 223, and the front part thereof is raised upward, thereby defining an air induction channel together with the front part of the fixed plate 223, so that the refrigerated return air flow from the refrigerated return air outlet 217 is introduced into the ventilation hole 216 and / or the front end of the evaporator 300 through the air induction channel.

[0050] There is a gap between the upper cover 215 of the evaporator cover 210 and the top of the evaporator 300, and an air induction plate 232 is arranged in the gap, and the air induction plate 232 includes: a rear section that fits with the rear of the fixing plate 223, an inclined section that extends upward from the front end of the rear section, and a front section that extends from the front end of the inclined section parallel to the top of the evaporator 300. The front section and the top of the evaporator 300 define an air induction channel to form an air induction channel, so that the refrigerated return air flow from the refrigerated return air port 217 is introduced into the front end of the evaporator 300 and / or the front of the top of the evaporator 300 through the air induction channel. The front end of the front section is tilted upward to expand the opening area of ​​the air induction channel.

[0051] A filling portion 231 is arranged between the air induction plate 232 and the upper cover 215, so that the upper cover 215 presses against the evaporator 300. The air induction plate 232 is preferably made of a material with good thermal conductivity and certain structural strength, such as an aluminum plate. By utilizing the windward channel formed by the air induction plate 232, when the front of the evaporator 300 is frosted and cannot enter the air due to abnormal operation of the evaporator 300 or high temperature and high humidity environment, the return air can enter from the top air induction duct to ensure normal cooling of the evaporator 300. The filling portion 231 can cooperate with the air induction plate 232 to form an air induction channel, and can support the evaporator cover 210, so that the fixation of the evaporator 300 is more reliable.

[0052] The refrigerator 10 of this embodiment changes the position of the evaporator 300 in the refrigeration system from the rear of the compartment to the lower part of the freezer compartment 111, and changes the traditional vertical installation mode of the evaporator 300 to a horizontal placement, thereby increasing the height of the storage compartment and facilitating user operation. In addition, since the evaporator 300 is no longer arranged at the back, the distance in the front and rear directions of the refrigerator 10 can be reduced, thereby improving the utilization efficiency of the storage space of the refrigerator 10. In addition, the refrigerator 10 of this embodiment can also arrange the compressor 200 and the condenser 500 behind the evaporator 300, so that the freezer compartment 111 is flat, thereby improving the space utilization rate of the storage space of the refrigerator 10.

[0053] The air supply duct 410 of the refrigerator 10 of this embodiment can be arranged at the rear of the freezing compartment 111, and has an air supply port leading to the rear of the evaporator cavity 151 at its lower end, and supplies air to the freezing compartment 111 through the freezing air inlet 411 leading to the freezing compartment 111. The evaporator fan 220 (i.e., the refrigeration fan) is arranged at the air supply port of the air supply duct 410 to send the air in the evaporator cavity 151 into the air supply duct 410, and the evaporator fan 220 is configured to be inclined at a set angle relative to the evaporator 300, which saves space on the one hand and facilitates sending cold air into the air supply duct 410 on the other hand.

[0054] The air supply duct 410 further extends upward to the rear of the refrigerating compartment 112, and supplies air to the refrigerating compartment 112 through the refrigerating air inlet 412 leading to the refrigerating compartment 112; in the case where the variable temperature compartment 113 is arranged, the air supply duct 410 can also supply air to the variable temperature compartment 113 through the variable temperature air inlet 413 leading to the variable temperature compartment 113. The refrigerating air flow is distributed through the air supply duct 410, so that each storage compartment can reach its own set temperature.

[0055] The return air duct 420 of the refrigerator 10 of this embodiment can be arranged on at least one side of the inner shell of the box body, and its upper end is connected to the refrigerated compartment 112, and its lower end is connected to the front of the evaporator cavity 151, so as to guide the return air of the refrigerated compartment back to the evaporator cavity 151. For example, the return air duct 420 can be arranged on both sides of the inner shell of the box body, and the air is returned through both sides. The return air duct 420 can be connected to both sides of the interval between the evaporator front baffle 212 and the front end of the evaporator 300, so that the refrigerated return air can enter from the front of the evaporator 300.

[0056] A drainage slope and a heating wire are provided at the connection between the return air duct 420 and the evaporator chamber 151. The drainage slope and the heating wire work together to prevent condensation and frost at the connection, thereby preventing frost from blocking the return air duct 420.

[0057] Figure 8 It is a structural schematic diagram of a compressor compartment 122 in a refrigerator 10 of an embodiment of the present invention. A compressor compartment 122 is further formed at the rear of the freezer compartment 111 of the cabinet 100. The top wall of the compressor compartment 122 is located below the air supply duct 410 and lower than the top of the evaporator 300. The bottom wall of the compressor compartment 122 is lower than the lowest point of the bottom wall of the evaporator cavity 151. The compressor 200, condenser 500 and heat dissipation fan 600 of the refrigerator 10 can be arranged laterally at intervals inside the compressor compartment 122.

[0058] The bottom wall of the freezing chamber 111 at the rear of the evaporator cavity 151 can be tilted and extended upward to reserve space for the compressor chamber 122. The height of the step surface can be set according to the size of the evaporator. For example, the distance from the top surface of the evaporator 300 to the ground where the refrigerator 10 is located can be 250 mm to 310 mm. This specific range not only ensures the arrangement requirements of the evaporator 300, the compressor 200, and the condenser 500, but also enables the height of the freezing chamber 111 at the bottom of the refrigerator 10 to meet the convenience of users in taking and placing items.

[0059] The bottom wall of the evaporator chamber 151 is in a shape that is gradually concave toward the center, and a drainage hole 225 is opened at the lowest point; and the refrigerator 10 can also be provided with an evaporation dish 700 in the press chamber 122, and the evaporation dish 700 can be provided adjacent to the condenser 500. A drainage pipe 227 can connect the drainage hole 225 to the evaporation dish 700. For example, the drainage pipe 227 can extend obliquely downward from the drainage hole 225 to the evaporation dish 700 to drain the condensed water of the evaporator 300 to the evaporation dish 700.

[0060] The inclination angle of the bottom wall needs to be such that the condensation can naturally flow into the drain hole 225. Alternatively, the bottom wall can also be an inverted quadrangular pyramid, and the angles between the four inclined surfaces and the horizontal plane are all greater than or equal to 5° to ensure that the condensed water automatically flows. The drain pipe 227 is placed at an angle, and the end of the drain pipe 227 connected to the drain hole 225 is higher than the end leading to the evaporating dish 700. The inclination angle of the drain pipe 227 matches the angle of the inclined surface at the bottom of the evaporator chamber 151, so that the condensed water generated by the evaporator 300 is automatically discharged. The heat of the condenser 500 is used to evaporate the water in the evaporating dish 700.

[0061] The refrigerator 10 of this embodiment can be a built-in refrigerator. In order to ensure the overall aesthetics, the reserved distance between the built-in refrigerator and the surrounding walls or cabinets is small, and the heat is dissipated by bottom air inlet and bottom air outlet. The left and right sides of the bottom of the box body 100 can be respectively provided with a heat dissipation air inlet (set on one side of the condenser 500) and a heat dissipation air outlet (set on one side of the compressor 200). The heat dissipation fan 600 is arranged between the condenser 500 and the compressor 200, and is used to form a heat dissipation airflow for the condenser 500 and the compressor 200 to dissipate heat.

[0062] A heat dissipation airflow duct is formed below the box 100, and the heat dissipation airflow duct is configured so that the heat dissipation airflow enters from the front of one side of the condenser 500 (heat dissipation air inlet), flows through the condenser 500 and the compressor 200 in sequence, and is discharged through the front of one side of the compressor 200 (heat dissipation air outlet). There is a heat insulation layer between the compressor chamber 122 and the evaporator chamber 151 to avoid cold loss. In order to realize the above heat dissipation structure, a windshield strip 800 can also be provided at the bottom of the box 100 to ensure the flow direction of the heat dissipation airflow.

[0063] The refrigerator 10 of the embodiment with optimized evaporator 300 installation structure completely changes the structure of the existing refrigerator, changes the position of the evaporator 300 in the refrigeration system from the rear of the compartment to the lower part of the freezing compartment 111, changes the vertical installation mode of the evaporator 300 to a horizontal placement, increases the height of the freezing compartment 111, and facilitates user operation. In addition, since the evaporator 300 is no longer arranged at the back, the distance in the front and rear directions of the refrigerator 10 can be reduced, the utilization efficiency of the storage space of the refrigerator 10 is improved, and the storage space of the freezing compartment 111 is optimized.

[0064] In addition, the refrigerator 10 of this embodiment uses the elastic pad 224 to fix the evaporator 300 in the box body 100, thereby avoiding the inconvenience caused to the user by vibration noise during operation when the evaporator 300 is placed forward, and further improving the user experience.

[0065] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A refrigerator, comprising: A box body, a lower portion of which defines a freezing compartment, and a bottom of the freezing compartment is formed with an evaporator cavity for arranging the refrigerator evaporator; The evaporator is in the shape of a flat rectangular parallelepiped as a whole; an evaporator front baffle, which serves as the front wall of the evaporator chamber and is spaced apart from the front end of the evaporator; and An evaporator cover, comprising an inclined portion extending obliquely upward from the top of the evaporator front baffle and an upper cover portion connected to the inclined portion and arranged above the evaporator; The freezing compartment forms a freezing storage cavity above the upper cover portion, and the inclined portion is provided with a freezing return air port connecting the freezing storage cavity and the evaporator cavity.

2. The refrigerator according to claim 1, wherein The refrigeration return air outlet comprises a plurality of return air grilles spaced apart longitudinally, and the upper edge of each return air grille is provided with a shielding plate protruding from the outer surface of the inclined portion to prevent foreign matter from falling into the refrigeration return air outlet from above.

3. The refrigerator according to claim 2, further comprising: Steps of the same height are formed on both sides of the evaporator chamber; The fixed brackets are respectively arranged on the step surfaces of the two step parts; A fixing plate is arranged on the top of the evaporator; a ventilation hole is opened at the front of the fixing plate; An air induced draft plate is arranged between the upper cover portion and the fixed plate, with its rear portion being in contact with the rear portion of the fixed plate and its front portion being upwardly raised, thereby defining an air induced draft channel together with the front portion of the fixed plate, thereby introducing the refrigerated return air flow from the refrigerated return air outlet into the ventilation hole and / or the front end of the evaporator through the air induced draft channel.

4. The refrigerator according to claim 1, further comprising: an air supply duct, arranged at the rear of the freezing compartment, having an air supply port at its lower end leading to the rear of the evaporator chamber, and supplying air to the freezing compartment by means of a freezing air inlet leading to the freezing compartment; and The evaporator fan is arranged at the air supply port to deliver the air in the evaporator cavity into the air supply duct, and the evaporator fan is configured to be inclined at a set angle relative to the evaporator.

5. The refrigerator according to claim 4, wherein The box body further defines at least one refrigerating compartment above the freezing compartment, and the air supply duct extends upward to the rear of the refrigerating compartment, and supplies air to the refrigerating compartment through a refrigerating air inlet leading to the refrigerating compartment; and the refrigerator further comprises: The return air duct is arranged on at least one side of the box body, with its upper end connected to the refrigerated compartment and its lower end connected to the front of the evaporator chamber, so as to guide the return air of the refrigerated compartment back to the evaporator chamber.

6. The refrigerator according to claim 5, wherein: The return air duct is connected to both sides of the interval between the evaporator front baffle and the front end of the evaporator, so that the return air of the refrigerated compartment enters from the front of the evaporator.

7. The refrigerator according to claim 5, wherein: A drainage slope and a heating wire are provided at the connection point between the return air duct and the evaporator chamber.

8. The refrigerator according to claim 4, wherein The box body is further formed with a compressor compartment at the rear of the freezing chamber, the top wall of the compressor compartment is located below the air supply duct and lower than the top of the evaporator, and the bottom wall of the compressor compartment is lower than the lowest point of the bottom wall of the evaporator cavity; and The refrigerator further comprises: The compressor, the condenser and the heat dissipation fan are arranged in a transversely spaced manner inside the compressor chamber.

9. The refrigerator according to claim 8, wherein The bottom wall of the evaporator cavity is in a shape that gradually concave from the periphery to the center, and has a drainage hole at the lowest point; and the refrigerator further includes: An evaporating dish is arranged in the compressor chamber, and a drain pipe is connected to the drain hole, wherein the drain pipe extends obliquely downward from the drain hole to the evaporating dish to drain the condensed water of the evaporator to the evaporating dish.

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