High-efficiency energy-saving refrigerator heater

Abstract

The application relates to an energy-efficient refrigerator heater, which comprises a glass tube and a resistance wire, two ends of the glass tube are respectively provided with connecting seats, the connecting seats are used for being mounted on the inner wall of the refrigerator, and the two ends of the glass tube are mounted on the refrigerator through the connecting seats; an arc-shaped plate wrapped around the glass tube is arranged between the two connecting seats, the arc-shaped plate is provided with a heat dissipation opening and the heat dissipation opening is used for being directed to a condenser, and the outer peripheral wall of the arc-shaped plate is provided with a heat insulation layer. The energy-efficient refrigerator heater can improve the heat utilization rate of the resistance wire and is energy-saving and environment-friendly.

Description

Technical Field

[0001] This application relates to the technical field of refrigerator heaters, and in particular to a high-efficiency and energy-saving refrigerator heater. Background Technology

[0002] The condenser is an essential component of the refrigerator's refrigeration system. While the condenser is cooling, frost will form on its heat exchange fins due to the drop in temperature. After prolonged use, the frost layer will continue to thicken, affecting the heat transfer efficiency and thus the condenser's heat exchange efficiency. Therefore, to prevent frost from forming on the heat exchange fins, a heater is needed to heat the fins and achieve the defrosting effect.

[0003] In the prior art, the heater includes a glass tube and a resistance wire. The glass tube is installed below the condenser, and the resistance wire is placed inside the glass tube. During defrosting, the resistance wire is heated to increase the air temperature around the heat exchange fins, thereby defrosting the heat exchange fins. However, the heat generated by the resistance wire diffuses outward along the periphery of the glass tube, and only a portion of the heat near the heat exchange fins acts on the heat exchange fins. The heat utilization rate of the resistance wire is low, so further improvement is needed. Summary of the Invention

[0004] In order to improve the utilization rate of heat generated by resistance wire, this application provides a high-efficiency and energy-saving refrigerator heater.

[0005] The high-efficiency and energy-saving refrigerator heater provided in this application adopts the following technical solution:

[0006] A high-efficiency and energy-saving refrigerator heater includes a glass tube and a resistance wire. Each end of the glass tube is provided with a connecting seat, which is used to install on the inner wall of the refrigerator. The two ends of the glass tube are installed in the refrigerator through the connecting seats. An arc-shaped plate wrapped around the glass tube is provided between the two connecting seats. The arc-shaped plate has a heat dissipation opening and the heat dissipation opening is directed toward the condenser. The outer peripheral wall of the arc-shaped plate is provided with a heat insulation layer.

[0007] By adopting the above technical solution, through the setting of the arc plate and the heat insulation layer, the heat generated by the resistance wire diffuses towards the condenser through the heat dissipation opening to cool and defrost the heat exchange fins of the condenser; the arc plate is wrapped around the glass tube, and the heat insulation layer can concentrate as much of the heat generated by the resistance wire as possible in the arc plate, so that more heat acts on the heat exchange fins through the heat dissipation opening, which greatly improves the heat utilization rate, reduces heat loss, and saves energy and protects the environment.

[0008] Optionally, a plurality of support blocks are fixed to the inner peripheral wall of the arc-shaped plate, and the side wall of the support block away from the arc-shaped plate abuts against the outer peripheral wall of the glass tube; an air blowing pipe is inserted through the support block, and an air blowing hole communicating with the inside of the air blowing pipe is opened on the outer peripheral wall of the air blowing pipe, and the air blowing hole faces the inner peripheral wall of the arc-shaped plate.

[0009] By adopting the above technical solution, the support block and the air blowing pipe are used to support the glass tube. The support block supports the glass tube, allowing the weight of the glass tube to be transferred to the connecting seats on both sides of the glass tube through the support block. This reduces the possibility of the glass tube breaking when the operator presses the glass tube during installation. By blowing air out through the air blowing hole of the air blowing pipe, the gas can blow away the heat collected in the curved plate and blow this heat out along the heat dissipation opening, further improving the heat utilization rate and reducing the possibility of heat accumulating in the curved plate for a long time.

[0010] Optionally, the connector has a first insertion part for matching the opening of the glass tube, and the connector is detachably installed on the glass tube through the first insertion part; a plurality of annular sealing rings are fixed on the outer peripheral wall of the first insertion part, and the sealing rings are elastically arranged and abut against the inner peripheral wall of the glass tube.

[0011] By adopting the above technical solution, and through the setting of the first insertion part and the sealing ring, when installing the glass tube, the tube opening is aligned with the first insertion part and pushed, so that the first insertion part is inserted into the tube opening of the glass tube, completing the quick installation between the glass tube and the connector; when the first insertion part is inserted into the tube opening of the glass tube, the sealing ring deforms and abuts against the inner circumferential wall of the glass tube, improving the sealing performance between the glass tube and the first insertion part, and reducing the possibility of external moisture entering the interior of the glass tube along the tube opening.

[0012] Optionally, it also includes a mounting base for installation on the inner wall of the refrigerator. The mounting base has a snap-fit ​​groove, and the side wall of the connecting base away from the first insertion part has a second insertion part. The second insertion part is used to insert into the snap-fit ​​groove, and the connecting base is detachably installed on the mounting base through the second insertion part.

[0013] By adopting the above technical solution, and by setting the second plug-in part and the snap-fit ​​groove, when installing the connector, the second plug-in part of the connector is aligned with the snap-fit ​​groove and pushed so that the second plug-in part is inserted into the snap-fit ​​groove, thereby improving the ease of disassembly and assembly between the connector and the mounting base.

[0014] Optionally, a vent hole is provided on the side wall of the first plug-in portion away from the connector, the vent hole penetrates the side wall of the second plug-in portion away from the connector, and the diameter of the vent hole gradually decreases from the end closer to the glass tube to the end farther away from the glass tube.

[0015] By adopting the above technical solution, and through the setting of the vent hole, during the heating process of the resistance wire, the air pressure inside the glass tube increases due to thermal expansion and contraction. At this time, the gas inside the glass tube can be discharged outward through the vent hole, reducing the possibility that the air pressure inside the glass tube is too high and pushes the first insertion part outward, thereby improving the connection stability between the glass tube and the first insertion part. The diameter of the vent hole gradually decreases from the end closer to the glass tube to the end farther away from the glass tube, thereby reducing the groove of the vent hole away from the glass tube, making it difficult for external water vapor to enter the interior of the glass tube through the vent hole.

[0016] Optionally, the connector, the first plug-in portion, and the second plug-in portion are all elastically configured. When the second plug-in portion is inserted into the snap-fit ​​groove, the second plug-in portion deforms and closes in the vent hole.

[0017] By adopting the above technical solution, under normal conditions, after the connector is inserted into the snap-fit ​​groove through the second plug part, the second plug part deforms to close the vent hole, thereby reducing the possibility of external moisture entering the glass tube through the vent hole. During the heating process of the resistance wire, the air pressure inside the glass tube increases, allowing the gas inside the glass tube to squeeze the inner wall of the vent hole, forcing the second plug part to deform and open the vent hole, so that the gas inside the glass tube can be discharged outward through the vent hole to maintain the balance of internal and external air pressure. On the other hand, after some of the gas inside the glass tube is discharged outward through the vent hole, when the heating of the resistance wire is stopped, the temperature inside the glass tube drops, making the air pressure inside the glass tube lower than the external air pressure. The external air pressure can press the first plug part tightly against the opening of the glass tube, further improving the connection stability between the glass tube and the first plug part.

[0018] Optionally, the connecting seat, the first insertion part, and the second insertion part are all elastically configured, and an elastic sheet is provided inside the vent hole; the elastic sheet includes a connecting piece and two movable pieces, the movable pieces are fitted and fixed to the inner wall of the vent hole, one end of each of the two movable pieces is fixed to the two opposite side walls of the connecting piece, the free ends of the two movable pieces extend to the groove of the vent hole away from the glass tube, and the free ends of the two movable pieces are normally fitted together to close the groove of the vent hole away from the glass tube.

[0019] By adopting the above technical solution, and through the setting of the elastic sheet, the free ends of the two movable sheets are normally attached to each other, thereby causing the inner wall of the vent hole to deform, so that the vent hole can remain closed in the groove away from the glass tube under normal conditions.

[0020] Optionally, push rods are fixed to the sidewalls of the two movable pieces that are close to each other. One end of each push rod passes through the connecting seat and is fixed with a push block. When the two push blocks are driven to move closer to each other, the push blocks drive the free ends of the two movable pieces to move away from each other so as to open the vent hole away from the groove of the glass tube.

[0021] By adopting the above technical solution, and through the setting of the push rod and push block, when it is necessary to disassemble the connecting seat, the operator can squeeze the two push blocks and force them to move closer together, thereby pushing the two movable pieces and forcing them to move away from each other. The two movable pieces force the inner wall of the vent hole to deform and open at the slot of the vent hole away from the glass tube. The gas in the glass tube is connected to the outside through the vent hole, so that the air pressure in the glass tube and the outside are kept in balance. Then, the connecting seat is pulled outward, so that the first insertion part is disengaged from the glass tube. This reduces the possibility that the pressure difference between the glass tube and the outside will cause excessive pulling resistance when the operator pulls out the connecting seat.

[0022] Optionally, each of the push rods is equipped with a push bar, the end of which extends away from the push rod to the first insertion portion. When the two push blocks approach each other, the two push bars approach each other and force the first insertion portion to deform.

[0023] By adopting the above technical solution, the setting of the push bar forces the two push blocks to move closer to each other, and the two push rods drive the two push bars to move closer to each other, so as to squeeze the first plug part, force the first plug part to deform and detach from the inner peripheral wall of the glass tube, thereby reducing the contact area between the first plug part and the glass tube to reduce friction, and thus making it easier to pull out the connector.

[0024] Optionally, the two connecting seats have mating grooves on their adjacent sidewalls. The shape of the mating grooves is adapted to the shape of the cross-section of the arc plate, and the two ends of the arc plate are respectively inserted into the mating grooves of the two connecting seats.

[0025] By adopting the above technical solution and setting the docking groove, when installing the arc plate, the two ends of the arc plate are respectively inserted into the docking grooves of the two connecting seats. The two docking grooves limit the arc plate, thereby allowing the arc plate to be installed between the two connecting seats, improving the ease of installation of the arc plate.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. With the addition of the arc-shaped plate and the insulation layer, the heat generated by the resistance wire diffuses towards the condenser through the heat dissipation openings to cool and defrost the heat exchange fins of the condenser. The arc-shaped plate is wrapped around the glass tube, and the insulation layer can concentrate as much of the heat generated by the resistance wire as possible within the arc-shaped plate, so that more heat can act on the heat exchange fins through the heat dissipation openings, greatly improving the heat utilization rate, reducing heat loss, and saving energy and protecting the environment.

[0028] 2. By setting up support blocks and air blowing pipes, the support blocks support the glass tube, allowing the weight of the glass tube to be transferred to the connecting seats on both sides of the glass tube through the support blocks, reducing the possibility of the glass tube breaking when the operator presses the glass tube during installation; the air blowing out through the air blowing holes of the air blowing pipe can blow away the heat collected in the curved plate and blow this part of the heat out through the heat dissipation openings, further improving the heat utilization rate and reducing the possibility of heat accumulating in the curved plate for a long time.

[0029] 3. By setting the vent, during the heating process of the resistance wire, the air pressure inside the glass tube increases due to thermal expansion and contraction. At this time, the gas inside the glass tube can be discharged outward through the vent, reducing the possibility that the air pressure inside the glass tube is too high and pushes the first insertion part outward, thus improving the connection stability between the glass tube and the first insertion part. The diameter of the vent gradually decreases from the end closer to the glass tube to the end farther away from the glass tube, thereby reducing the groove of the vent further away from the glass tube, making it difficult for external water vapor to enter the interior of the glass tube through the vent. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0031] Figure 2 This is a partial cross-sectional view of Embodiment 1 showing the first insertion part and the mating groove;

[0032] Figure 3 This is a partial cross-sectional view of Embodiment 1 showing the second connector being inserted into the snap-fit ​​groove;

[0033] Figure 4 This is a partial cross-sectional view of Example 1 showing the curved plate and the insulation layer;

[0034] Figure 5 This is a partial cross-sectional view of the air blowing pipe in Embodiment 2;

[0035] Figure 6 This is a partial cross-sectional view of the air blowing pipe from another direction in Embodiment 2;

[0036] Figure 7 This is a partial cross-sectional view of the vent in Example 3;

[0037] Figure 8This is a partial cross-sectional view of Embodiment 3 showing the second insertion part being inserted into the snap-fit ​​groove;

[0038] Figure 9 This is a partial cross-sectional view of the elastic sheet in Example 4;

[0039] Figure 10 This is a partial cross-sectional view of the push bar in Example 5.

[0040] Explanation of reference numerals in the attached drawings: 1. Glass tube; 2. Resistance wire; 21. Wire; 3. Connector; 31. First insertion part; 311. Sealing ring; 32. Second insertion part; 321. Cut surface; 33. Vent hole; 34. Connecting groove; 4. Arc plate; 41. Heat dissipation opening; 42. Insulation layer; 43. Support block; 44. Air blowing pipe; 441. Air blowing hole; 5. Mounting base; 51. Snap-fit ​​groove; 52. Guide block; 6. Elastic sheet; 61. Connecting piece; 611. Connecting hole; 62. Movable piece; 621. Push rod; 622. Push block; 623. Push bar; 624. Through hole. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0042] Example 1:

[0043] This application discloses a high-efficiency and energy-saving refrigerator heater, which is installed below the refrigerator condenser to defrost the heat exchange fins of the condenser.

[0044] Reference Figure 1 , Figure 2 A high-efficiency and energy-saving refrigerator heater includes a glass tube 1, a resistance wire 2, a connecting seat 3, and a mounting seat 5. In this embodiment, the glass tube 1 is a cylindrical double-layered glass tube 1. There are two connecting seats 3, which are respectively installed at both ends of the glass tube 1. Each connecting seat 3 has a first insertion part 31 fixedly installed on the end face near the glass tube 1. The two first insertion parts 31 are respectively matched and inserted into the tube openings at both ends of the glass tube 1. The connecting seat 3 can be detachably installed at the tube opening of the glass tube 1 through the first insertion part 31 to seal the tube opening of the glass tube 1.

[0045] Reference Figure 2Each first insertion part 31 has an annular sealing ring 311 fixedly installed on its outer peripheral wall. The sealing ring 311 is a rubber ring. When the first insertion part 31 is inserted into the opening of the glass tube 1, the sealing ring 311 abuts against the inner peripheral wall of the glass tube 1 and deforms. There are multiple sealing rings 311, and all sealing rings 311 are spaced apart along the length of the glass tube 1. With this design, the sealing ring 311 improves the sealing effect between the first insertion part 31 and the opening of the glass tube 1, and reduces the possibility of external water vapor entering the interior of the glass tube 1 through the opening of the glass tube 1.

[0046] Reference Figure 1 , Figure 2 The second plug-in portion 32 is fixedly installed on the side wall of the connector 3 away from the first plug-in portion 31. In this embodiment, the connector 3, the first plug-in portion 31 and the second plug-in portion 32 are integrally formed. The resistance wire 2 is located inside the glass tube 1. One end of the resistance wire 2 is connected to a wire 21. The wire 21 passes through the first plug-in portion 31, the connector 3 and the second plug-in portion 32 in sequence. With this design, power is supplied to the resistance wire 2 through the wire 21 to heat the resistance wire 2. The heat generated by the resistance wire 2 can be diffused to the condenser to defrost the heat exchange fins of the condenser.

[0047] Reference Figure 1 , Figure 3 There are two mounting bases 5, and each mounting base 5 corresponds to one of the two connecting bases 3. The mounting base 5 is used to install on the inner wall of the refrigerator. Specifically, in this embodiment, the mounting base 5 is detachably installed on the inner wall of the refrigerator by means of bolts. The mounting base 5 is elastically set. The top wall of the mounting base 5 is provided with a snap-fit ​​groove 51. The snap-fit ​​groove 51 is a through groove that passes through the two opposite side walls of the mounting base 5. The snap-fit ​​groove 51 is used for the second insertion part 32 of the connecting base 3 to match and insert. Two guide blocks 52 are fixedly installed at the groove opening of the snap-fit ​​groove 51. Each guide block 52 has a guide surface.

[0048] Reference Figure 2 , Figure 3The second insertion part 32 has a cutting surface 321 on its peripheral wall. Two cutting surfaces 321 are provided and are spaced apart axially around the connecting seat 3. The two cutting surfaces 321 are parallel to each other and the distance between the two cutting surfaces 321 is greater than the distance between the two guide blocks 52. When the second insertion part 32 is inserted into the snap-fit ​​groove 51, the cutting surface 321 is in contact with the inner wall of the snap-fit ​​groove 51. With this design, when the connecting seat 3 is installed, the second insertion part 32 is aligned with the groove of the snap-fit ​​groove 51 of the mounting seat 5 and pushed. The second insertion part 32 can push the two guide blocks 52 and force the mounting seat 5 to deform and open the groove of the snap-fit ​​groove 51. When the second insertion part 32 moves into the snap-fit ​​groove 51, the mounting seat 5 returns to its original shape, thereby snapping the second insertion part 32 into the snap-fit ​​groove 51. This allows both ends of the glass tube 1 to be hung on the two mounting seats 5, greatly improving the ease of installation and removal of the glass tube 1.

[0049] Reference Figure 1 , Figure 2 In this embodiment, the two connecting seats 3 are provided with mating grooves 34 on their sidewalls that are close to each other. The mating grooves 34 are arc-shaped around the axial direction of the glass tube 1. An arc plate 4 is installed between the two mating grooves 34. The shape of the cross section of the arc plate 4 is adapted to the shape of the mating groove 34. The two ends of the arc plate 4 are respectively matched and inserted into the mating grooves 34 of the two connecting seats 3. The arc plate 4 can be detachably installed between the two connecting seats 3 through the mating grooves 34.

[0050] Reference Figure 1 , Figure 4 In this embodiment, the inner peripheral wall of the arc-shaped plate 4 is attached to the outer peripheral wall of the glass tube 1 to form a wrapping around the glass tube 1. The arc-shaped plate 4 has a heat dissipation opening 41, which is directed toward the heat exchange fins of the condenser. A heat insulation layer 42 is fixedly installed on the outer peripheral wall of the arc-shaped plate 4. In this embodiment, the heat insulation layer 42 is set as a glass fiber heat insulation layer 42, which is fixedly installed on the outer peripheral wall of the arc-shaped plate 4 by adhesive bonding. With this design, the glass fiber heat insulation layer 42 has good heat insulation performance and can improve the heat insulation effect of the arc-shaped plate 4.

[0051] The implementation principle of Embodiment 1 of this application is as follows: The arc-shaped plate 4 wraps around the glass tube 1, thereby protecting the glass tube 1, improving the structural stability of the glass tube 1, and reducing the possibility of the glass tube 1 breaking due to impact from foreign objects during installation on the mounting base 5; at the same time, when the heat generated by the resistance wire 2 diffuses outward, the arc-shaped plate 4 blocks the heat, so that as much of the heat generated by the resistance wire 2 diffuses as much as possible through the heat dissipation opening 41 toward the heat exchange fins of the condenser, greatly improving the utilization rate of the heat generated by the resistance wire 2, reducing the possibility of heat waste caused by the heat generated by the resistance wire 2 diffusing away from the condenser, thus saving energy and protecting the environment.

[0052] Example 2:

[0053] This application discloses a high-efficiency and energy-saving refrigerator heater.

[0054] Reference Figure 5 , Figure 6 The difference between the high-efficiency energy-saving refrigerator heater disclosed in this application embodiment and Embodiment 1 is that:

[0055] In this embodiment, there is a gap between the inner peripheral wall of the arc plate 4 and the outer peripheral wall of the glass tube 1. A support block 43 is fixedly installed on the inner peripheral wall of the arc plate 4. Multiple support blocks 43 are provided and spaced apart along the length direction of the glass tube 1. The side wall of the support block 43 away from the arc plate 4 abuts against the outer peripheral wall of the glass tube 1.

[0056] Reference Figure 5 , Figure 6 The connecting seat 3 is equipped with an air blowing pipe 44. One end of the air blowing pipe 44 extends along the length of the glass tube 1 and passes through all the support blocks 43 in sequence. The other end of the air blowing pipe 44 is used to connect to the air supply equipment (the air supply equipment can be a blower, etc. The blower is existing technology, and its structure will not be described in detail here, and it is not shown in the figure). The outer peripheral wall of the air blowing pipe 44 has a plurality of air blowing holes 441 that communicate with the inside of the air blowing pipe 44. In this embodiment, the air blowing holes 441 face the inner peripheral wall of the arc plate 4, and the air blowing direction of the air blowing holes 441 is not perpendicular to the plate surface of the arc plate 4.

[0057] The implementation principle of Embodiment 2 of this application is as follows: When the heat generated by the resistance wire 2 diffuses outward, part of the heat diffuses outward along the heat dissipation opening 41, and the other part gathers between the inner peripheral wall of the arc plate 4 and the outer peripheral wall of the glass tube 1. Gas is blown through the air blowing hole 441 to accelerate the air flow speed between the inner peripheral wall of the arc plate 4 and the outer peripheral wall of the glass tube 1, so as to blow the heat gathered between the inner peripheral wall of the arc plate 4 and the outer peripheral wall of the glass tube 1 to the heat exchange fins through the heat dissipation opening 41, thereby improving the heat utilization rate. On the other hand, the air blowing hole 441 blows the heat between the inner peripheral wall of the arc plate 4 and the outer peripheral wall of the glass tube 1 outward in a timely manner, so as to reduce the possibility of the arc plate 4 heating temperature rising sharply.

[0058] Example 3:

[0059] This application discloses a high-efficiency and energy-saving refrigerator heater.

[0060] Reference Figure 7 , Figure 8 The difference between the high-efficiency energy-saving refrigerator heater disclosed in this application embodiment and Embodiment 1 is that:

[0061] In this embodiment, the connecting seat 3, the first insertion part 31, and the second insertion part 32 are all elastically arranged. The first insertion part 31 has a vent hole 33 on its side wall away from the connecting seat 3. The vent hole 33 penetrates the side wall of the second insertion part 32 away from the connecting seat 3. The diameter of the vent hole 33 gradually decreases from the end near the glass tube 1 to the end away from the glass tube 1. For ease of description, the part of the vent hole 33 located in the second insertion part 32 is defined as the opening and closing part of the vent hole 33. When the second insertion part 32 is inserted into the snap-fit ​​groove 51, the second insertion part 32 deforms and closes in the opening and closing part of the vent hole 33.

[0062] The implementation principle of Embodiment 3 of this application is as follows: When the second insertion part 32 of the connector 3 is installed in the snap-fit ​​groove 51 of the mounting base 5, the second insertion part 32 deforms and squeezes the opening and closing part of the vent hole 33, thereby closing the vent hole 33 and reducing the possibility of external water vapor entering the glass tube 1 through the vent hole 33; during the heating process of the resistance wire 2, the temperature inside the glass tube 1 rises and expands, causing the air pressure inside the glass tube 1 to rise. The air pressure inside the glass tube 1 can push open the opening and closing part of the vent hole 33 to open the vent hole 3. 3. Some of the gas inside the glass tube 1 can be discharged through the vent 33 to maintain the balance of air pressure inside and outside the glass tube 1, reducing the possibility that the air pressure inside the glass tube 1 is too high and pushes open the first insertion part 31; when the resistance wire 2 stops heating and the temperature inside the glass tube 1 decreases, the air pressure inside the glass tube 1 is lower than the external air pressure, and the external air pressure can press against the connector 3, so that the first insertion part 31 of the connector 3 is firmly inserted into the opening of the glass tube 1, improving the connection stability between the glass tube 1 and the connector 3.

[0063] Example 4:

[0064] This application discloses a high-efficiency and energy-saving refrigerator heater.

[0065] Reference Figure 9 The difference between the high-efficiency energy-saving refrigerator heater disclosed in this application embodiment and Embodiment 3 is that:

[0066] In this embodiment, an elastic piece 6 is installed inside the vent 33. The elastic piece 6 includes a connecting piece 61 and two movable pieces 62. The connecting piece 61 is located at the end of the vent 33 near the glass tube 1. A through hole 611 is opened on the side wall of the connecting piece 61 near the glass tube 1. One end of each of the two movable pieces 62 is fixedly installed on the two opposite side walls of the connecting piece 61. For ease of description, the end of the movable piece 62 away from the connecting piece 61 is defined as the free end of the movable piece 62. The free ends of the two movable pieces 62 extend to the end of the vent 33 away from the glass tube 1. The connecting piece 61 and the two movable pieces 62 are integrally formed bent parts. Each movable piece 62 is bonded and fixed to the inner wall of the vent 33. The free ends of the two movable pieces 62 are normally in contact with each other to close the vent 33 at the end away from the glass tube 1.

[0067] Reference Figure 9 In this embodiment, each of the two movable pieces 62 has a through hole 624 on its sidewalls that are close to each other. The through hole 624 is a through hole that passes through the two opposite sidewalls of the movable piece 62. The through holes 624 of the two movable pieces 62 are staggered. Each of the two movable pieces 62 has a push rod 621 fixed on its sidewalls that are close to each other. One end of the push rod 621 is fixedly installed on the sidewall of the movable piece 62, and the other end passes through the through hole 624 of the other movable piece 62. Then it passes through the connecting seat 3 and is fixedly installed with a push block 622. When the two push blocks 622 are driven to move closer to each other, the push blocks 622 drive the free ends of the two movable pieces 62 to move away from each other so as to open the slot of the vent 33 away from the glass tube 1.

[0068] The implementation principle of Embodiment 4 of this application is as follows: Under normal conditions, the free ends of the two movable pieces 62 are attached to each other to close the vent hole 33, reducing the possibility of external water vapor entering the vent hole 33; when the resistance wire 2 is heated, the gas pressure in the glass tube 1 increases, allowing the gas in the glass tube 1 to enter the vent hole 33 through the connecting hole 611 and push open the free ends of the two movable pieces 62, forcing the elastic piece 6 to deform, thereby allowing it to be discharged outward; after the gas is discharged, the two movable pieces 62 return to their shape and close the vent hole 33.

[0069] When it is necessary to disassemble the connector 3 to replace the resistance wire 2 inside the glass tube 1, the operator can hold the connector 3 with his palm and squeeze it tightly, thereby forcing the two push blocks 622 to push the two movable pieces 62, so that the free ends of the two movable pieces 62 are far apart and open in the vent hole 33. The outside gas can enter the glass tube 1 through the vent hole 33, so that the air pressure inside and outside the glass tube 1 is kept balanced, reducing the possibility that the air pressure inside the glass tube 1 is too low when the operator pulls the connector 3 outward, resulting in excessive pulling resistance.

[0070] Example 5:

[0071] This application discloses a high-efficiency and energy-saving refrigerator heater.

[0072] Reference Figure 10 The difference between the high-efficiency energy-saving refrigerator heater disclosed in this application embodiment and Embodiment 4 is that:

[0073] In this embodiment, a push bar 623 is installed in the connecting seat 3. There are two push bars 623, which are arranged one-to-one with the two push rods 621. One end of the push bar 623 is fixedly connected to the corresponding push rod 621, and the other end extends to the first insertion part 31. The two push bars 623 are symmetrically arranged around the axial direction of the glass tube 1. When the two push blocks 622 approach each other, the two push bars 623 approach each other and force the first insertion part 31 to deform.

[0074] The implementation principle of Embodiment 5 of this application is as follows: When the connecting seat 3 is disassembled, the two pushing blocks 622 are held and forced to move closer to each other. The two pushing bars 623 move closer to each other under the action of their respective corresponding pushing rods 621 to squeeze the first insertion part 31, forcing the first insertion part 31 to deform, thereby deforming the sealing ring 311 and forming a gap between it and the inner peripheral wall of the glass tube 1, reducing the contact area between the glass tube 1 and the first insertion part 31, thereby making it easier to pull out the connecting seat 3 and further improving the ease of disassembly between the connecting seat 3 and the glass tube 1.

[0075] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-efficiency and energy-saving refrigerator heater, comprising a glass tube (1) and a resistance wire (2), characterized in that: The glass tube (1) has connecting seats (3) at both ends, which are used to install on the inner wall of the refrigerator. The two ends of the glass tube (1) are installed on the refrigerator through the connecting seats (3). An arc-shaped plate (4) is provided between the two connecting seats (3) and wraps around the glass tube (1). The arc-shaped plate (4) has a heat dissipation opening (41) and the heat dissipation opening (41) is directed toward the condenser. The outer peripheral wall of the arc-shaped plate (4) is provided with a heat insulation layer (42). The connecting seat (3) has a first insertion part (31) which is used to match the tube opening inserted into the glass tube (1). The connecting seat (3) is detachably installed on the refrigerator through the first insertion part (31). The glass tube (1) has a plurality of annular sealing rings (311) fixed on the outer peripheral wall of the first insertion part (31), the sealing rings (311) being elastically arranged and abutting against the inner peripheral wall of the glass tube (1); it also includes a mounting base (5) for installation on the inner wall of the refrigerator, the mounting base (5) having a snap-fit ​​groove (51), the connecting seat (3) having a second insertion part (32) on the side wall away from the first insertion part (31), the second insertion part (32) being used to insert into the snap-fit ​​groove (51), the connecting seat (3) being detachably installed on the mounting base (5) through the second insertion part (32); the first insertion part (31) having a second insertion part (32) on the side wall away from the connecting seat (3) A vent (33) is provided, which penetrates the side wall of the second insertion part (32) away from the connecting seat (3). The diameter of the vent (33) gradually decreases from the end near the glass tube (1) to the end away from the glass tube (1). The connecting seat (3), the first insertion part (31), and the second insertion part (32) are all elastically arranged. An elastic piece (6) is provided inside the vent (33). The elastic piece (6) includes a connecting piece (61) and two movable pieces (62). The movable pieces (62) are fitted and fixed to the inner wall of the vent (33). One end of each of the two movable pieces (62) is fixed to the two opposite side walls of the connecting piece (61). The free ends of the two movable pieces (62) extend to the vent (33) away from the groove of the glass tube (1). The free ends of the two movable pieces (62) are normally attached to each other to close the vent (33) away from the groove of the glass tube (1). Push rods (621) are fixed on the side walls of the two movable pieces (62) that are close to each other. One end of each push rod (621) passes through the connecting seat (3) and is fixed with a push block (622). When the two push blocks (622) are driven to move closer to each other, the push blocks (622) drive the free ends of the two movable pieces (62) to move away from each other to open the vent (33) away from the groove of the glass tube (1).

2. The high-efficiency energy-saving refrigerator heater according to claim 1, characterized in that: The inner peripheral wall of the arc plate (4) is fixed with a plurality of support blocks (43), and the side wall of the support block (43) away from the arc plate (4) abuts against the outer peripheral wall of the glass tube (1); the support block (43) is provided with an air blowing pipe (44), and the outer peripheral wall of the air blowing pipe (44) is provided with an air blowing hole (441) communicating with the inside of the air blowing pipe (44), and the air blowing hole (441) faces the inner peripheral wall of the arc plate (4).

3. The high-efficiency energy-saving refrigerator heater according to claim 1, characterized in that: The connector (3), the first insertion part (31) and the second insertion part (32) are all elastically arranged. When the second insertion part (32) is inserted into the snap-fit ​​groove (51), the second insertion part (32) deforms and closes in the vent hole (33).

4. The high-efficiency energy-saving refrigerator heater according to claim 1, characterized in that: Each of the push rods (621) is equipped with a push bar (623), the end of the push bar (623) away from the push rod (621) extends to the first insertion part (31). When the two push blocks (622) approach each other, the two push bars (623) approach each other and force the first insertion part (31) to deform.

5. A high-efficiency energy-saving refrigerator heater according to claim 1, characterized in that: The two connecting seats (3) have mating grooves (34) on their sidewalls that are close to each other. The shape of the mating grooves (34) is adapted to the shape of the cross-section of the arc plate (4). The two ends of the arc plate (4) are respectively inserted into the mating grooves (34) of the two connecting seats (3).

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