Refrigerator evaporator with sectional type defrosting flow guide mechanism

Abstract

The invention relates to the technical field of refrigeration maintenance, in particular to a refrigerator evaporator with a sectional type defrosting flow guide mechanism, which comprises a copper flow guide pipe fixedly mounted in a refrigerator through an assembly frame body and fins fixedly mounted on the outer side of the copper flow guide pipe, and a transverse flow guide pipe is fixedly assembled on the inner bottom surface of the assembly frame body. According to the refrigerator evaporator with the sectional type defrosting flow guide mechanism, the electronic control turnover structure design is adopted, the angle of the electronic control type lifting cylinder can be changed according to needs, and therefore the air pumping and discharging height of the evaporator is adjusted, and the refrigeration range of the evaporator is wider; the electric control type lifting cylinder can be adjusted in a telescopic mode, frost at different heights can be removed at fixed points, staggered air exhaust can be carried out, high-temperature air is prevented from being sucked in, and the refrigeration performance is improved. The electric control type lifting cylinder is arranged in the upper concave structure of the copper flow guide pipe, the structural layout is more reasonable and compact, and the size is small.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration maintenance, in particular to an evaporator for a refrigerator with a segmented defrosting guide mechanism. Background Art

[0002] Air-cooled refrigerators control the temperature inside the refrigerator by controlling the forced circulation of cold air, and use the evaporator to cool down the refrigerator. In order to save internal storage control, the evaporator is usually set in the interlayer between the freezer and the refrigerator or at the rear of the cabinet. However, due to the low temperature around the evaporator, it is easy to frost on the surface of the coil or fins after long-term use, which seriously affects its cooling effect. Currently, most evaporators increase the surrounding air flow by installing fans on the outside, but the position and operation mode of the fans are limited, which causes the heat generated by local temperature control to be blown into the refrigerator, resulting in low accuracy of temperature control, and inability to adjust the temperature and defrost locally, which greatly increases power consumption. During the heating process, the entire evaporator surface is heated, which results in a relatively large amount of heat generation. Summary of the invention

[0003] The technical problem to be solved by the present invention is: the current evaporator fan is limited in position and operation mode, which causes the heat generated by local temperature control to be blown into the interior of the refrigerator, resulting in low temperature control accuracy and inability to perform local temperature control and defrost, thereby greatly increasing power consumption. During the heating process, the entire evaporator surface will be heated, which results in relatively large heat generation.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an evaporator for a refrigerator with a segmented defrost guide mechanism, including a copper guide tube fixedly installed inside the refrigerator through an assembly frame and fins fixedly installed on the outside of the copper guide tube, a horizontal guide tube fixedly installed on the bottom surface of the assembly frame, and an electrically controlled lifting cylinder installed on the horizontal guide tube inside the copper guide tube.

[0005] A main internal flow guide chamber and a secondary internal flow guide chamber are provided inside the transverse flow guide pipe at the opening position of the lower end of the copper flow guide pipe, and a main discharge port connected to the main internal flow guide chamber and a secondary suction port connected to the secondary internal flow guide chamber are provided on the outer surface of the transverse flow guide pipe.

[0006] The interior of the main internal guide chamber is movably equipped with centrifugal guide blades through a transverse shaft tube, the interior of the transverse guide tube is installed with a main electric drive shaft that passes through the main internal guide chamber and the auxiliary internal guide chamber, and the interior of the auxiliary internal guide chamber is located outside the main electric drive shaft and is equipped with a magnetically controlled linkage mechanism for controlling the transverse shaft tube.

[0007] The electrically controlled lifting cylinder includes an external adjustment cover shell that is movably mounted on the outside of the horizontal guide tube, an electrically controlled adjustment module fixed on the outer surface of the external adjustment cover shell, a flip adjustment cylinder fixed on the outer curved surface of the external adjustment cover shell, a first electrically controlled telescopic cylinder that is slidably mounted on the outside of the flip adjustment cylinder, and a second electrically controlled telescopic cylinder that is slidably mounted on the outside of the first electrically controlled telescopic cylinder.

[0008] The main discharge port and the auxiliary suction port are staggered, and an internal flow guide chamber matching the main discharge port and the auxiliary suction port is provided on the inner arc surface of the external adjustment cover.

[0009] An embedded temperature sensor controller is fixedly mounted on the inner side of the opening at the upper end of the second electrically controlled telescopic cylinder.

[0010] A lateral electric heating strip and a humidity sensor controller for controlling the lateral electric heating strip are installed on the outer arc surface of the first electrically controlled telescopic cylinder and the second electrically controlled telescopic cylinder.

[0011] The magnetically controlled linkage mechanism includes a fixed mounting seat axially mounted on the main electric drive shaft, an external adjustment gear slidably mounted on the outside of the fixed mounting seat, an internal electromagnet assembled on the fixed mounting seat and an iron spring installed between the external adjustment gear and the internal electromagnet, and a conical gear ring on the inner side of the end of the transverse shaft tube.

[0012] A lateral air inlet is provided between the main internal flow guiding chamber and the auxiliary internal flow guiding chamber.

[0013] A detachable metal mesh frame is fixedly mounted on the top surface of the assembly frame, and the interior of the detachable metal mesh frame is filled with dry particles.

[0014] The beneficial effects of the present invention are: (1) The refrigerator evaporator with a segmented defrosting guide mechanism of the present invention adopts an electrically controllable flip structure design, and can change the angle of the electrically controlled lifting cylinder as needed, thereby adjusting the air extraction height of the evaporator, so that the evaporator has a wider refrigeration range; (2) The electrically controlled lifting cylinder can be extended and adjusted, which can not only remove frost at different heights, but also perform staggered air extraction to avoid drawing in high-temperature air, thereby improving refrigeration performance; (3) The electrically controlled lifting cylinder is arranged inside the concave structure on the copper guide tube, which makes the structural layout more reasonable and compact and the volume smaller; (4) A main internal guide chamber and a secondary internal guide chamber are provided inside the transverse guide tube. The centrifugal guide blades inside the main internal guide chamber can be independently controlled, and the air circulation state at different positions can be accurately controlled. Not only can the temperature be controlled by zone, but also the impact on the surrounding temperature during the defrosting process can be reduced; (5) The electrically controlled lifting cylinder can be directly installed under the existing evaporator mechanism, which can facilitate the transformation and upgrading of the existing evaporator and greatly facilitate popularization and promotion; (6) By setting temperature sensor controllers on the outside of the electric-controlled lifting cylinder, the temperature at different positions and heights can be measured, and the temperature measurement is more accurate; (7) The height of the entire air inlet and exhaust port can be adjusted freely, making the operation simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the magnetically controlled linkage mechanism in the present invention.

[0018] Figure 3 It is a left internal schematic diagram of the transverse guide tube and the assembly end of the electric-controlled lifting cylinder in the present invention.

[0019] Figure 4 It is a right side internal schematic diagram of the assembly end of the horizontal guide tube and the electric-controlled lifting cylinder in the present invention. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Figure 1 , Figure 2 , Figure 3 and Figure 4 The evaporator for a refrigerator with a segmented defrost guide mechanism shown in the figure includes a copper guide tube 2 fixedly installed inside the refrigerator through an assembly frame 1 and fins 3 fixedly installed on the outside of the copper guide tube 2. A horizontal guide tube 4 is fixedly installed on the inner bottom surface of the assembly frame 1, and an electrically controlled lifting cylinder 5 is installed on the horizontal guide tube 4 and located inside the copper guide tube.

[0023] In order to cooperate with the internal drive adjustment, a main internal flow guide chamber 41 and a secondary internal flow guide chamber 42 are opened inside the horizontal flow guide tube 4 at the opening position of the lower end of the copper flow guide tube 2, and a main discharge port 43 connected to the main internal flow guide chamber 41 and a secondary suction port 44 connected to the secondary internal flow guide chamber 42 are opened on the outer surface of the horizontal flow guide tube 4.

[0024] External air is drawn into the auxiliary internal flow guiding chamber 42 from the auxiliary flow suction port 44 , then introduced into the main internal flow guiding chamber 41 , and finally discharged to the outside from the main flow discharge port 43 .

[0025] In order to cooperate with internal driving and adjustment, the main internal guide chamber 41 is movably equipped with centrifugal guide blades 46 through a transverse shaft tube 45, and the main electric drive shaft 6 that passes through the main internal guide chamber 41 and the auxiliary internal guide chamber 42 is installed inside the transverse guide tube 4, and the auxiliary internal guide chamber 42 is located outside the main electric drive shaft 6 and is equipped with a magnetically controlled linkage mechanism 7 for controlling the transverse shaft tube 45.

[0026] The main electric drive shaft 6 is transmission-connected to one end of the transverse shaft tube 45 through the magnetically controlled linkage mechanism 7, and then synchronously drives the centrifugal guide blades 46 to rotate at high speed.

[0027] Working principle: Under normal circumstances, the main electric drive shaft 6 drives the horizontal shaft tube 45 at all positions and the centrifugal guide blades 46 on its outer side to rotate at high speed through the magnetically controlled linkage mechanism 7, and then blows outward through the electrically controlled lifting cylinder 5. The electrically controlled lifting cylinder 5 can be flipped and adjusted according to the temperature difference in different areas inside the refrigerator; when the temperature at different positions differs, it indicates local frost. At this time, the electrically controlled lifting cylinder 5 at the position with higher temperature flips to the inside of the copper guide tube 2, and then the electrically controlled lifting cylinder 5 is telescopically adjusted to accurately locate the frosting position, and then the electric heating defrosting is started, and at the same time, the transmission connection state of the centrifugal guide blades 46 below and on both sides of the position is closed, so as to avoid the high temperature generated by the electric heating being directly introduced into the refrigerator, affecting the defrosting efficiency and the temperature inside the refrigerator; at the same time, the upper layer electric heating and the lower layer exhaust can be used to avoid the hot air being drawn in, so as to achieve the purpose of staggered temperature control.

[0028] In order to cooperate with the electrically controlled flipping and telescopic adjustment, the electrically controlled lifting cylinder 5 includes an external adjustment cover 51 movably mounted on the outside of the horizontal guide tube 4, an electrically controlled adjustment module 52 fixed on the outer surface of the external adjustment cover 51, a flip adjustment cylinder 53 fixed on the outer arc surface of the external adjustment cover 51, a first electrically controlled telescopic cylinder 54 slidably mounted on the outside of the flip adjustment cylinder 53, and a second electrically controlled telescopic cylinder 55 slidably mounted on the outside of the first electrically controlled telescopic cylinder 54.

[0029] The electric control adjustment module 52 includes a transmission boss fixed on the outer side of the external adjustment cover 51, an internal adjustment motor fixed on the transmission boss, an adjustment gear axially fixed on the internal adjustment motor shaft, and an arc-shaped rack fixed on the outer side of the horizontal flow guide tube 4. The internal adjustment motor drives the adjustment gear to rotate, thereby controlling the external adjustment cover 51 to rotate and adjust along the horizontal flow guide tube 4.

[0030] The first electrically-controlled telescopic cylinder 54 includes a first telescopic cylinder sleeved on the outside of the flip adjustment cylinder 53 and a first telescopic support rod fixed inside the flip adjustment cylinder 53, the extended end of the first telescopic support rod is fixedly connected to the first control block on the inner wall of the first telescopic cylinder and the first telescopic cylinder, the second electrically-controlled telescopic cylinder 55 includes a second telescopic cylinder sleeved on the outside of the first telescopic cylinder and a second telescopic support rod fixed inside the first telescopic cylinder, the extended end of the second telescopic support rod is fixedly connected to the second control block on the inner wall of the second telescopic cylinder and the second telescopic cylinder.

[0031] In order to cooperate with the staggered arrangement, the main discharge port 43 and the auxiliary suction port 44 are staggered, and an internal guide chamber 56 that cooperates with the main discharge port 43 and the auxiliary suction port 44 is provided on the inner arc surface of the external adjustment cover 51.

[0032] Air is drawn into the auxiliary internal flow guiding chamber 42 from the auxiliary flow suction port 44 , and then introduced into the main internal flow guiding chamber 41 through the auxiliary internal flow guiding chamber 42 .

[0033] Both sides of the external adjustment housing 51 are provided with arc-shaped sealing cover plates respectively matching with the main discharge port 43 and the auxiliary suction port 44 .

[0034] In order to measure the temperature of the air inlet, an embedded temperature sensor controller 8 is fixedly mounted on the inner side of the upper opening of the second electrically controlled telescopic cylinder 55 .

[0035] When the temperature exceeds the set maximum temperature, the embedded temperature sensor controller 8 will control the first electrically controlled telescopic cylinder 54 and the second electrically controlled telescopic cylinder 55 to descend, thereby lowering the height of the air inlet according to the temperature difference at different positions, thereby avoiding high temperature inhalation and lowering the air temperature at the air inlet.

[0036] In order to measure the humidity of the copper flow guide tubes 2 on both sides and the outer fins 3, lateral electric heating strips 9 and a humidity sensor controller 10 for controlling the lateral electric heating strips 9 are installed on the outer arc surfaces of the first electrically controlled telescopic cylinder 54 and the second electrically controlled telescopic cylinder 55.

[0037] The humidity at the corresponding positions is monitored by the humidity sensor controllers 10 on both sides. When the humidity of the copper guide tube 2 and the outer fins 3 at the corresponding positions exceeds the maximum set humidity, the lateral electric heating strips 9 are started to heat outwards through the lateral electric heating strips 9, thereby drying the frost on the surface of the outer fins 3.

[0038] During drying, the centrifugal guide vanes 46 at this position stop rotating.

[0039] In order to cooperate with the magnetic control adjustment, the magnetic control linkage mechanism 7 includes a fixed mounting seat 71 axially mounted on the main electric drive shaft 6, an external adjustment gear 72 slidably mounted on the outside of the fixed mounting seat 71, an internal electromagnet 73 assembled on the fixed mounting seat 71 and an iron spring 74 installed between the external adjustment gear 72 and the internal electromagnet 73, and a conical gear ring 47 on the inner side of the end of the transverse shaft tube 45.

[0040] The internal electromagnet 73 is started, thereby magnetically attracting the iron spring 74, and the iron spring 74 contracts, thereby controlling the sliding of the external adjustment gear 72, so that the external adjustment gear 72 is meshed with the conical gear ring 47 for transmission. At this time, the main electric drive shaft 6 drives the external adjustment gear 72, thereby synchronously driving the transverse shaft tube 45 and the conical gear ring 47, and then the transverse shaft tube 45 and the centrifugal guide vane 46 are used to rotate synchronously.

[0041] In order to facilitate internal air conduction, a lateral air inlet 48 is provided between the main internal flow conduction chamber 41 and the auxiliary internal flow conduction chamber 42 .

[0042] The air is introduced from the secondary internal guide chamber 42 to the lateral air inlet 48 , and then introduced into the main internal guide chamber 41 through the lateral air inlet 48 .

[0043] In order to absorb the moisture inside the air in the air intake direction and purify the odor inside the air, a detachable metal mesh frame 11 is fixedly installed on the top surface of the assembly frame 1, and the detachable metal mesh frame 11 is filled with dry particles.

[0044] A strip-shaped loading and unloading opening is provided on the inner top surface of the assembly frame 1 , and the assembly block on the top of the detachable metal mesh frame 11 is inserted into the strip-shaped loading and unloading opening and then inserted horizontally to be fixedly assembled with the detachable metal mesh frame 11 and the assembly frame 1 .

[0045] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of 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 segmented defrosting guide mechanism, comprising a copper guide tube (2) fixedly mounted inside the refrigerator via an assembly frame (1) and a fin (3) fixedly mounted on the outside of the copper guide tube (2), wherein: A transverse flow guide tube (4) is fixedly mounted on the inner bottom surface of the assembly frame (1), and an electrically controlled lifting cylinder (5) is mounted on the transverse flow guide tube (4) and located inside the copper flow guide tube (2).

2. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 1, characterized in that: A main internal flow guiding chamber (41) and a secondary internal flow guiding chamber (42) are provided inside the transverse flow guiding tube (4) at the opening position of the lower end of the copper flow guiding tube (2), and a main discharge port (43) connected to the main internal flow guiding chamber (41) and a secondary suction port (44) connected to the secondary internal flow guiding chamber (42) are provided on the outer surface of the transverse flow guiding tube (4).

3. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 2, characterized in that: The main internal flow guide chamber (41) is movably provided with a centrifugal flow guide blade (46) via a transverse shaft tube (45); the transverse flow guide tube (4) is provided with a main electric drive shaft (6) penetrating the main internal flow guide chamber (41) and the auxiliary internal flow guide chamber (42); the auxiliary internal flow guide chamber (42) is provided with a magnetically controlled linkage mechanism (7) for controlling the transverse shaft tube (45) outside the main electric drive shaft (6).

4. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 1, characterized in that: The electrically controlled lifting cylinder (5) comprises an external adjustment cover (51) movably mounted on the outside of the transverse guide tube (4), an electrically controlled adjustment module (52) fixed on the outer side of the external adjustment cover (51), a tilting adjustment cylinder (53) fixed on the outer arc surface of the external adjustment cover (51), a first electrically controlled telescopic cylinder (54) slidably mounted on the outside of the tilting adjustment cylinder (53), and a second electrically controlled telescopic cylinder (55) slidably mounted on the outside of the first electrically controlled telescopic cylinder (54).

5. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 2, characterized in that: The main discharge port (43) and the auxiliary suction port (44) are arranged in a staggered manner, and an internal flow guide chamber (56) matching the main discharge port (43) and the auxiliary suction port (44) is provided on the inner arc surface of the external adjustment cover (51).

6. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 4, characterized in that: An embedded temperature sensor controller (8) is fixedly mounted on the inner side of the upper opening of the second electrically controlled telescopic cylinder (55).

7. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 4, characterized in that: A lateral electric heating strip (9) and a humidity sensor controller (10) for controlling the lateral electric heating strip (9) are installed on the outer arc-shaped surfaces of the first electrically controlled telescopic cylinder (54) and the second electrically controlled telescopic cylinder (55).

8. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 3, characterized in that: The magnetically controlled linkage mechanism (7) comprises a fixed mounting seat (71) axially sleeved on the main electric drive shaft (6), an external adjustment gear (72) slidably sleeved on the outside of the fixed mounting seat (71), an internal electromagnet (73) mounted on the fixed mounting seat (71), and an iron spring (74) installed between the external adjustment gear (72) and the internal electromagnet (73), and a conical gear ring (47) on the inner side of the end of the transverse shaft tube (45).

9. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 3, characterized in that: A lateral air inlet (48) is provided between the main internal flow guiding chamber (41) and the secondary internal flow guiding chamber (42).

10. The refrigerator evaporator with a segmented defrosting guide mechanism according to claim 1, characterized in that: A detachable metal mesh frame (11) is fixedly mounted on the inner top surface of the assembly frame (1), and the interior of the detachable metal mesh frame (11) is filled with dry particles.

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