An evaporator for a refrigerator with a high-precision defrosting mechanism

Abstract

The present invention relates to the technical field of refrigerator refrigeration and defrosting, in particular to an evaporator for a refrigerator with a high-precision defrosting mechanism, which includes an assembly frame installed on the refrigerator, and fins are fixedly installed inside the assembly frame through coiled pipes. The evaporator for a refrigerator with a high-precision defrosting mechanism of the present invention greatly improves the air-cooling uniformity of the evaporator and enhances the refrigeration effect by fixedly assembling a horizontal diversion pipe with a built-in cross-flow fan on one side of the fins inside the assembly frame; an air outlet is provided on the inner wall of the assembly frame on one side of the fins, and an electric control diversion cover is installed inside the air outlet, which can change the refrigeration mode of the refrigerator as needed, improve the operability, and the applicable scenarios are more diverse; a temperature sensor is installed on the electric control diversion cover, and an electric heating film is installed on the inner wall of the air outlet of the horizontal diversion pipe. The electric heating film is automatically started according to the temperature difference in different regions, so as to accurately and directionally start the air-heating defrosting and avoid the energy consumption waste caused by large-area defrosting.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerator refrigeration and defrosting, and in particular to an evaporator for a refrigerator with a high-precision defrosting mechanism. Background Art

[0002] An air-cooled refrigerator uses forced circulation of cold air to control the temperature inside the cabinet, uses an evaporator for cooling, and the evaporator is arranged in the interlayer between the freezer and the refrigerator compartment or at the rear of the cabinet body. Since the temperature around the evaporator is very low, a single-point fan diversion design is mostly adopted. After long-term use, it is easy to frost on the surface of the coil or fin, seriously affecting its refrigeration effect. The current evaporator uses a simple electric heating wire for heating and defrosting. During the heating process, the entire surface of the evaporator is heated, which results in a relatively large amount of heat generation, and it is impossible to perform targeted operations on the local frosting area, resulting in a significant increase in energy consumption. At the same time, the refrigeration method of the refrigerator cannot be adjusted according to needs, resulting in relatively limited operability and adaptability. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the current single-point fan diversion design makes the coil or fin prone to frosting, and the traditional defrosting power consumption is wasted relatively seriously, and the method is very single.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an evaporator for a refrigerator with a high-precision defrosting mechanism, including an assembly frame installed on the refrigerator, a fin is fixedly installed inside the assembly frame through a coil, a horizontal diversion pipe is fixedly assembled inside the assembly frame on one side of the fin, a cross-flow fan is movably assembled inside the horizontal diversion pipe, side diversion mechanisms are arranged on both sides of the assembly frame and are matched with the cross-flow fan, an air outlet is arranged on the inner wall of the assembly frame on one side of the fin, an electronically controlled diversion cover is installed on one side of the air outlet, a plurality of temperature sensors are installed on the surface of the electronically controlled diversion cover close to the fin, and a plurality of electric heating films matched with the temperature sensors are installed on the inner wall of the air outlet of the horizontal diversion pipe.

[0005] The side diversion mechanism includes an arc-shaped diversion pipe fixed on the inner walls on both sides of the assembly frame, an internal thread assembly blind hole opened at the air inlet position of the arc-shaped diversion pipe, a detachable assembly cover screwed into the internal thread assembly blind hole through an external thread head, and a filter element installed inside the detachable assembly cover.

[0006] The electronically controlled diversion cover includes a lateral assembly frame fixed on both sides of the air outlet, a flipping diversion plate movably installed inside the lateral assembly frame through a shaft, and an end adjusting strut for controlling the flipping diversion plate.

[0007] An assembly groove for installing a temperature sensor is opened on the side wall of the flipping diversion plate close to the air outlet.

[0008] On the inner wall of the outlet of the horizontally arranged diversion pipe, arc-shaped adjustment grooves are symmetrically arranged, and a magnetically controlled arc-shaped diversion cover for installing an electric heating film is slidably assembled inside the arc-shaped adjustment grooves.

[0009] On the inner walls on both sides of the arc-shaped adjustment groove, arc-shaped guide grooves are symmetrically opened.

[0010] The magnetically controlled arc-shaped diversion cover includes a copper shell with sliders on both sides, a side control seat fixed on the inner side surface of the copper shell, an embedded electromagnet fixed on the inner side surface of the arc-shaped adjustment groove, and an iron spring.

[0011] The installation positions of the temperature sensor and the electric heating film are located at the gap positions on both sides of the fins.

[0012] The end face of the flip diversion plate adjacent to the air outlet has an arc-shaped diversion surface.

[0013] Inside the arc-shaped diversion pipe, an in-built flow sensor is fixedly assembled inside the inner thread assembly blind hole.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) An evaporator for a refrigerator with a high-precision defrosting mechanism of the present invention greatly improves the air-cooling uniformity of the evaporator and enhances the refrigeration effect by fixedly assembling a horizontally arranged diversion pipe with an in-built cross-flow fan on one side of the fins inside the assembly frame.

[0016] (2) An air outlet is provided on the inner wall of the assembly frame on one side of the fins, and an electric control type diversion cover is installed inside the air outlet, which can change the refrigeration mode of the refrigerator as needed, improve the operability, and have more diverse applicable scenarios.

[0017] (3) A temperature sensor is installed on the electric control type diversion cover, and an electric heating film is installed on the inner wall of the outlet of the horizontally arranged diversion pipe. The electric heating film is automatically started according to the temperature difference in different regions, so as to accurately and directionally start the air-heating defrosting and avoid the energy consumption waste caused by large-area defrosting.

[0018] (4) By providing side diversion mechanisms on both sides of the assembly frame, which cooperate with the cross-flow fan, the space occupation on both sides can be reduced.

[0019] (5) By installing a detachable filter element inside the side diversion mechanism, the humidity of the air inlet can be reduced, thereby avoiding the probability and possibility of frosting.

[0020] (6) The electric heating film adopts an adjustable diversion design, which can improve the heat exchange efficiency of the air outlet and ensure the flux during normal operation.

[0021] (7) By adopting the air-heating defrosting method, the defrosting area and directivity can be improved, and the surface dryness can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the drawings and embodiments.

[0023] Figure 1 It is a schematic structural diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0025] Figure 3 It is a partial schematic diagram of the position of the electric heating film in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present invention will now be described in further detail in conjunction with the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Figure 1 、 Figure 2 and Figure 3 An evaporator for a refrigerator with a high-precision defrosting mechanism as shown in, includes an assembly frame 1 installed on the refrigerator. Inside the assembly frame 1, fins 3 are fixedly installed through a coil pipe 2. A horizontal diversion pipe 4 is fixedly assembled on one side of the fins 3 inside the assembly frame 1. A cross-flow fan 5 is movably assembled inside the horizontal diversion pipe 4. Side diversion mechanisms 6 are provided on both sides of the assembly frame 1 and are matched with the cross-flow fan 5. An air outlet 7 is provided on the inner wall of the assembly frame 1 on the side of the fins. An electric control diversion cover 8 is installed on one side of the air outlet 7. Ten temperature sensors 9 are installed on the surface of the electric control diversion cover 8 adjacent to the fins. Ten electric heating films 10 are installed on the inner wall of the air outlet of the horizontal diversion pipe 4 and are matched with the temperature sensors 9.

[0029] Working principle: The cross-flow fan 5 rotates at a high speed, sucking air from the side-mounted flow guiding mechanisms 6 on both sides, and then blowing it from the air outlet of the horizontally-mounted flow guiding pipe 4 into the gaps on both sides of the fins 3, and then guiding it into the freezer and the refrigerator interior by the electronically controlled flow guiding cover 8. When the temperature sensor 9 on the surface of the electronically controlled flow guiding cover 8 detects that the local temperature is higher than the surrounding temperature, at this time, the temperature sensor 9 activates the electric heating film 10 at the corresponding position to raise the air temperature at this position, and then performs warm air defrosting on the surfaces of the coil pipe 2 and the fins 3 at this position, discharging the temperature with hot air to improve the temperature and air drying effect; a humidity sensor is installed on one side of the temperature sensor 9 on the surface of the electronically controlled flow guiding cover 8. When the humidity drops to the humidity sensor during air drying, the electric heating film 10 is turned off until the temperature monitored by the temperature sensor 9 on the surface of the electronically controlled flow guiding cover 8 returns to consistency.

[0030] In order to cooperate with the side flow guiding, the side-mounted flow guiding mechanism 6 includes an arc-shaped flow guiding pipe 61 fixed on the inner walls of both sides of the assembly frame body 1, an internal thread assembly blind hole opened at the air inlet position of the arc-shaped flow guiding pipe 61, a detachable assembly cover 62 screwed into the internal thread assembly blind hole through an external thread head, and a filter element 63 installed inside the detachable assembly cover 62.

[0031] The filter element 63 is inserted into the detachable assembly cover 62, and then the external thread head at the end of the detachable assembly cover 62 is screwed into the internal thread assembly blind hole, so as to be fixedly communicated with the air inlet of the arc-shaped flow guiding pipe 61.

[0032] In order to control the opening and closing state of the air outlet 7 at the inner wall of the assembly frame body 1, the electronically controlled flow guiding cover 8 includes a lateral assembly frame 81 fixed on both sides of the air outlet, a flip flow guiding plate 82 movably installed inside the lateral assembly frame 81 through a shaft, and an end adjusting strut 83 for controlling the flip flow guiding plate 82.

[0033] The end adjusting strut 83 controls the flip flow guiding plate 82 through telescoping, so as to control the opening and closing state of the air outlet 7 at the inner wall of the assembly frame body 1.

[0034] In order to cooperate with the surface assembly, an assembly groove for installing the temperature sensor 9 is opened on the side wall of the flip flow guiding plate 82 adjacent to the air outlet.

[0035] The temperature sensor 9 is fixed inside the assembly groove, and can maintain the integrity with the flip flow guiding plate 82, reducing the surface wind resistance.

[0036] In order to cooperate with the lateral control, arc-shaped adjusting grooves 11 are symmetrically arranged on the inner wall of the air outlet of the horizontally-mounted flow guiding pipe 4, and a magnetically controlled arc-shaped flow guiding cover 12 for installing the electric heating film 10 is slidably assembled inside the arc-shaped adjusting grooves 11.

[0037] In order to cooperate with the assembly and adjustment on both sides, arc-shaped guiding grooves are symmetrically opened on the inner walls of both sides of the arc-shaped adjusting grooves 11.

[0038] To cooperate with the magnetic control adjustment, the magnetically controlled arc-shaped deflector 12 includes a copper shell 122 with sliders 121 on both sides, a side-mounted control seat 123 fixed on the inner side surface of the copper shell 122, an embedded electromagnet 124 fixed on the inner side surface of the arc-shaped adjustment groove 11, and an iron spring 125.

[0039] Both ends of the iron spring 125 are respectively installed on the surfaces of the side-mounted control seat 123 and the embedded electromagnet 124. When the embedded electromagnet 124 is activated, it controls the iron spring 125. By controlling the contraction of the iron spring 125, the gap between the side-mounted control seat 123 and the embedded electromagnet 124 is controlled, and the copper shell 122 is controlled to slide and adjust along the arc-shaped guide groove. At this time, the copper shells 122 on both sides of the air outlet of the horizontal flow guide pipe 4 slide into the position of the air outlet of the horizontal flow guide pipe 4. At this time, the electric heating film 10 is activated to heat the copper shell 122, which can increase the heating area and improve the heating effect.

[0040] To cooperate with the air-cooling effect, the temperature sensor 9 and the electric heating film 10 are installed at the gap positions on both sides of the fins 3.

[0041] To ensure the fluidity of the turning deflector 82 at the air outlet position and reduce the wind resistance, the turning deflector 82 has an arc-shaped fluid guiding surface near the end face of the air outlet.

[0042] The cross-flow fan 5 inside the horizontal flow guide pipe 4 rotates at a high speed, sucks air into the inside of the horizontal flow guide pipe 4 through the side-mounted flow guiding mechanisms 6 on both sides, and then uses the cross-flow fan 5 to blow the sucked air through the air outlet of the horizontal flow guide pipe 4 to the gap positions on both sides of the fins 3. Then the air passes through the coil 2 and the fins 3 for cooling, and then blows to the temperature sensor 9 on the surface of the electronically controlled deflector 8. The arc-shaped fluid guiding surface on the surface of the electronically controlled deflector 8 is used to guide the air outward to reduce the temperature of the freezer. The electronically controlled deflector 8 is turned to cool the refrigerator compartment, and at this time, the temperature adjustment of the refrigerator compartment can be ensured; when air-cooling adjustment of the freezer and direct cooling adjustment of the refrigerator compartment are required, only the air outlet 7 needs to be closed by the electronically controlled deflector 8 at this time, and the isolation between the freezer and the refrigerator compartment can be ensured.

[0043] To detect the intake air flow in real time, an in-built flow sensor 64 is fixedly assembled inside the arc-shaped guide pipe 61 at the inner side of the internal thread assembly blind hole.

[0044] When the flow detected by the in-built flow sensor 64 gradually decreases, it indicates that a large amount of impurities or liquid are adsorbed inside the filter element 63 and need to be replaced. Then, an early warning is sent through the in-built flow sensor 64 to facilitate reminding for replacement.

[0045] Taking the above-described ideal embodiments of the present invention as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An evaporator for a refrigerator with a high-precision defrosting mechanism, comprising an assembly frame (1) mounted on the refrigerator, wherein: The assembly frame (1) is fixedly provided with a fin (3) through a coil (2), the assembly frame (1) is fixedly provided with a transverse guide tube (4) on one side of the fin (3), the transverse guide tube (4) is movably provided with a cross-flow fan (5), both sides of the assembly frame (1) are provided with side guide mechanisms (6) that match the cross-flow fan (5), the inner wall of the assembly frame (1) is provided with an air outlet (7) on one side of the fin (3), an electrically controlled air guide cover (8) is installed on one side of the air outlet (7), a plurality of temperature sensors (9) are installed on the surface of the electrically controlled air guide cover (8) adjacent to the fin (3), and a plurality of electric heating films (10) that match the temperature sensors (9) are installed on the inner wall of the air outlet of the transverse guide tube (4); The side-mounted flow guiding mechanism (6) comprises an arc-shaped flow guiding pipe (61) fixed on the inner walls of both sides of the assembly frame (1), an internal thread assembly blind hole provided at the air inlet position of the arc-shaped flow guiding pipe (61), a detachable assembly cover (62) screwed into the internal thread assembly blind hole through an external thread head, and a filter element (63) installed inside the detachable assembly cover (62); The electrically controlled air deflector (8) comprises a lateral assembly frame (81) fixed on both sides of the air outlet (7), a flip air deflector (82) mounted on the inner side of the lateral assembly frame (81) via an axis, and an end adjustment support rod (83) for controlling the flip air deflector (82).

2. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 1, characterized in that: An assembly groove for mounting a temperature sensor (9) is provided on the side wall of the flip guide plate (82) adjacent to the air outlet.

3. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 1, characterized in that: The inner wall of the air outlet of the transverse air guide pipe (4) is symmetrically provided with an arc-shaped adjustment groove (11), and a magnetically controlled arc-shaped air guide cover (12) for installing the electric heating film (10) is slidably mounted inside the arc-shaped adjustment groove (11).

4. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 3, characterized in that: Arc-shaped guide grooves are symmetrically provided on the inner walls on both sides of the arc-shaped adjustment groove (11).

5. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 4, characterized in that: The magnetically controlled arc-shaped flow deflector (12) comprises a copper cover shell (122) having sliders (121) on both sides, a side control seat (123) fixed on the inner side of the copper cover shell (122), an embedded electromagnet (124) fixed on the inner side of the arc-shaped adjustment groove (11), and an iron spring (125).

6. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 1, characterized in that: The temperature sensor (9) and the electric heating film (10) are installed at the gap positions on both sides of the fin (3).

7. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 1, characterized in that: The flip guide plate (82) has an arc-shaped guide surface on the end surface adjacent to the air outlet.

8. The refrigerator evaporator with a high-precision defrosting mechanism according to claim 1, characterized in that: A built-in flow sensor (64) is fixedly mounted inside the arc-shaped flow guide tube (61) and located inside the internal thread assembly blind hole.

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