Anti-freezing chassis

Abstract

The utility model relates to the technical field of air conditioners, and particularly discloses an anti-freezing chassis which can be installed below a fin heat exchanger of a module air conditioner, is additionally provided with a heating device, can determine whether to start the heating device or not according to the environment temperature, and can start the heating device if the environment temperature is detected to be low and condensate water freezing possibly exists. Before the fan is started, the heating device is started to heat and deice so as to ensure normal operation of the machine; moreover, the heating belt is arranged in the deicing area in a U-shaped structure, so that all positions in the deicing area can be uniformly heated, and no ice is accumulated in the position of the deicing area; the heating tape comprises a core rope, a heating wire, an insulator and a braid layer which are sequentially arranged from inside to outside, the insulator is used for insulation protection of the heating wire, and electric leakage of the heating wire is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an anti-freezing chassis. Background Art

[0002] Modular air conditioners are also called modular machines. They consist of multiple modules, each of which has independent functions and can be combined and used together as needed. This design can make the air conditioner more flexible and can be combined according to different needs and space sizes, thereby achieving more precise temperature control and energy saving effects. At the same time, modular air conditioners also have the advantages of easy maintenance and replacement, because each module can be operated independently, which can be more convenient and quick if a module needs to be repaired or replaced.

[0003] Modular air conditioners generally need to collect and discharge the condensed water generated by the fin heat exchanger to prevent water accumulation in the modular air conditioner and the risk of short circuit. In winter, due to the cold weather, the water receiving pan of the modular air conditioner is prone to ice. The ice on the pan will affect drainage and the performance of the whole machine. If the water receiving pan is frozen and is not handled before the machine is turned on, it may even get stuck on the fan blades, causing the fan blades to be broken or the motor to be blocked and cause a machine accident. In order to solve these problems, some manufacturers have designed a chassis that uses a heating belt to heat and melt ice. For example, a chassis ice-melting device disclosed in Chinese patent number CN209147530U includes a water receiving pan and a chassis heating belt. A water collecting trough is provided in the water receiving pan, and a plurality of drainage holes are provided on the water collecting trough for drainage. The chassis heating belt is arranged along the arrangement direction of the drainage holes and wraps the drainage holes along the direction of the drainage holes.

[0004] The above-mentioned chassis defrosting device has a chassis heating belt arranged along the direction of the drainage holes, and is L-shaped as a whole. Due to the large volume of the fin heat exchanger, the condensed water drips on a larger area of ​​the entire chassis, while the condensed water at a position far away from the L-shaped chassis heating belt is unevenly heated, resulting in the condensed water temperature at this position being low and freezing; on the other hand, the heating wire it uses is only protected by a stainless steel shell on the outside, and the thermal insulation is insufficient; moreover, if the heating wire is aged or damaged, for example, due to oxidation and corrosion caused by long-term use at high temperature, it may cause the resistance value to increase, the heating power to decrease, or even an open circuit to occur. At this time, leakage may occur, posing a major safety hazard.

[0005] Therefore, it is necessary to design an antifreeze chassis that can solve the above problems. Utility Model Content

[0006] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide an anti-freezing chassis to solve the problems of uneven chassis heating and insufficient heat preservation and anti-leakage performance of the heating wire in the prior art.

[0007] An antifreeze chassis comprises a chassis body and a heating device, wherein the chassis body is provided with a water collecting trough, and a de-icing area is provided in the water collecting trough, and the heating device comprises a U-shaped heating belt arranged in the de-icing area, and the heating belt comprises a core rope, a heating wire, an insulator, and a braided layer arranged in sequence from the inside to the outside.

[0008] Specifically, the insulator includes a first heat-conducting insulation layer coated on the outside of the core rope and a second heat-conducting insulation layer coated on the outside of the first heat-conducting insulation layer.

[0009] Specifically, the heating wire is spirally wound around the outside of the core rope.

[0010] Specifically, the heating device further includes a power supply, and the power supply is electrically connected to the heating belt via a wire.

[0011] Specifically, a fixing seat is provided at the connection position between the wire and the heating belt, a positioning hole is provided on the fixing seat, and the fixing seat is fixed to the chassis body by the cooperation of screws and the positioning hole.

[0012] Specifically, the antifreeze chassis further comprises a fixing bar, and the fixing bar clamps and fixes the heating belt to the chassis body.

[0013] Specifically, the fixing strip includes a mounting portion and a clamping portion connected to one end of the mounting portion, the mounting portion is provided with a mounting hole, and the clamping portion is provided with a strip groove for the heating belt to pass through.

[0014] Beneficial effects of the utility model:

[0015] The anti-freeze chassis of the present application can be installed under the fin heat exchanger of the modular air conditioner. A heating device is added, and whether to turn on the heating device can be determined according to the ambient temperature. If the ambient temperature is detected to be low and condensed water may be frozen, the heating device is turned on to heat and melt the ice before the fan is turned on to ensure the normal operation of the machine; moreover, the heating belt is arranged in a U-shaped structure in the ice-melting area, so that each position in the ice-melting area can be heated evenly to ensure that there is no ice accumulation in the ice-melting area; the heating belt includes a core rope, a heating wire, an insulator, and a braided layer arranged in sequence from the inside to the outside, and the heating wire is insulated and protected by the insulator to prevent leakage of the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the anti-freezing chassis of the utility model;

[0018] Figure 2It is a structural schematic diagram of the heating device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the heating belt of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the fixing strip of the utility model.

[0021] The figures are marked as: chassis body 10, heating device 20, water collecting tank 11, ice-melting area 12, heating belt 21, core rope 211, heating wire 212, insulator 213, braided layer 214, first thermal conductive insulation layer 2131, second thermal conductive insulation layer 2132, power supply 22, wire 23, fixing seat 40, positioning hole 41, fixing strip 50, mounting portion 51, clamping portion 52, mounting hole 511, strip groove 521. DETAILED DESCRIPTION

[0022] The utility model provides an anti-freezing chassis. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 4 As shown:

[0025] The present embodiment discloses an anti-freeze chassis, including a chassis body 10 and a heating device 20. The chassis body 10 is provided with a water collecting tank 11, and a de-icing area 12 is provided in the water collecting tank 11. The heating device 20 includes a U-shaped heating belt 21 arranged in the de-icing area 12. The heating belt 21 includes a core rope 211, a heating wire 212, an insulator 213, and a braided layer 214 which are arranged in sequence from the inside to the outside.

[0026] The anti-freeze chassis of this embodiment can be installed under the fin heat exchanger of the modular air conditioner. A water collecting tank 11 is provided on the chassis body 10. The water collecting tank 11 is used to collect and discharge the condensed water generated by the fin heat exchanger to prevent water accumulation in the modular air conditioner and reduce the risk of short circuit in the circuit of the modular air conditioner.

[0027] In addition, a heating device 20 is added. A de-icing area 12 is provided in the water collection tank 11. The heating device 20 includes a heating belt 21 provided in the de-icing area 12. Whether to turn on the heating device 20 can be determined according to the ambient temperature. If it is detected that the ambient temperature is low and condensed water may be frozen, the heating device 20 is turned on to heat and defrost before the fan is turned on to ensure the normal operation of the machine.

[0028] Specifically: when the ambient temperature t≤0℃ and the fan status in the modular air conditioner is on, the heating device 20 can be turned on, and the heating belt 21 is powered on to generate heat to increase the temperature in the defrosting area 12, thereby preventing the condensed water from freezing; in another case, if the ambient temperature t≥2℃ or the fan status in the modular air conditioner is off, the heating device 20 is turned off to reduce energy consumption.

[0029] In addition, the heating belt 21 is arranged in the de-icing area 12 in a U-shaped structure, so that each position in the de-icing area 12 can be heated evenly, ensuring that there is no ice accumulation in the de-icing area 12 .

[0030] On the other hand, please refer to Figure 3 The heating belt 21 used in this embodiment includes a core rope 211, a heating wire 212, an insulator 213, and a braided layer 214 which are arranged in sequence from the inside to the outside. The core rope 211 is an intermediate material for winding the heating wire 212 into shape. After the heating wire 212 is wound into shape, the heating wire 212 is insulated and protected by the insulator 213 to prevent the heating wire 212 from leaking electricity. The braided layer 214 is also provided to improve the strength of the heating belt 21 and prevent the heating belt 21 from breaking.

[0031] Please refer to Figure 3 The insulator 213 includes a first thermal conductive insulation layer 2131 wrapped around the outside of the core rope 211 and a second thermal conductive insulation layer 2132 wrapped around the outside of the first thermal conductive insulation layer 2131. The double-layer thermal conductive insulation layer is used for double protection, which further improves the protective insulation effect of the insulator 213.

[0032] The first thermally conductive insulating layer 2131 and the second thermally conductive insulating layer 2132 can both be made of insulating materials with high thermal conductivity, such as silicone rubber, thermally conductive silica gel, and glass fiber, which can quickly conduct the heat generated by the heating wire 212 to improve the heating efficiency. The coating effect wraps the heating wire 212 to prevent the heating wire 212 from directly contacting the condensed water in the water collection tank 11, thereby reducing the risk of short circuit.

[0033] Please refer to Figure 3The heating wire 212 is spirally wound around the outer side of the core rope 211. The main function of winding the heating wire 212 into a spiral shape is to increase the length. Increasing the length can increase the heating area of ​​the heating wire 212, thereby obtaining more heat. Moreover, the surface area of ​​the heating wire 212 wound into a spiral shape is larger than that of a simple filament or electric heating sheet, which can dissipate heat better and make the heat dissipated more evenly.

[0034] Please refer to Figure 1 and Figure 2 The heating device 20 also includes a power supply 22, and the power supply 22 is electrically connected to the heating belt 21 through a wire 23. The power supply 22 has a positive terminal and a negative terminal. The wire 23 has two wires and is commonly connected to a plug connector, and is electrically contacted with the positive terminal and the negative terminal of the power supply 22 through the plug connector. The two wires 23 are respectively connected to the two ends of the heating wire 212 of the heating belt 21. The heating wire 212 is a filament made of conductive material, and conductive materials such as nickel-chromium alloy and copper-nickel alloy can be used. These materials have good conductivity and high temperature resistance. After power is turned on, heat is generated to increase the temperature of the ice-melting area 12 to prevent condensed water from freezing.

[0035] Please refer to Figure 2 In this embodiment, a fixing seat 40 is provided at the connection position between the wire 23 and the heating belt 21. A positioning hole 41 is provided on the fixing seat 40. The fixing seat 40 is provided with two limiting holes. The connection position between the wire 23 and the heating belt 21 is passed through the limiting holes, which has a good positioning effect. The fixing seat 40 is fixed to the chassis body 10 by the cooperation of the screws and the positioning holes 41. The screws are used for fixing. It is only necessary to pass the screws through the positioning holes 41 and then cooperate with the screw holes of the chassis body 10 to complete the installation. The installation difficulty is low, it is not easy to loosen after installation, and the stability is good.

[0036] Please refer to Figure 4 The anti-freeze chassis also includes a fixing strip 50, which clamps the heating belt 21 to the chassis body 10. The fixing strip 50 includes a mounting portion 51 and a clamping portion 52 connected to one end of the mounting portion 51. The mounting portion 51 is provided with a mounting hole 511, and the clamping portion 52 is provided with a strip groove 521 for the heating belt 21 to pass through. During installation, the heating belt 21 is first passed through the strip groove 521, and then the fixing strip 50 is fixed to the chassis body 10 by the cooperation of the screws and the mounting hole 511. The operation is simple. Through the fixation of the fixing strip 50, the heating belt 21 is U-shaped and surrounds the ice-melting area 12, ensuring that each position in the ice-melting area 12 is evenly heated.

[0037] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. An antifreeze chassis, comprising a chassis body (10) and a heating device (20), wherein a water collecting tank (11) is provided on the chassis body (10), characterized in that: A deicing area (12) is provided in the water collecting tank (11), and the heating device (20) comprises a heating belt (21) arranged in a U shape in the deicing area (12), and the heating belt (21) comprises a core rope (211), a heating wire (212), an insulator (213), and a braided layer (214) which are arranged in sequence from the inside to the outside.

2. The antifreeze chassis according to claim 1, characterized in that: The insulator (213) includes a first heat-conducting insulation layer (2131) wrapped around the outside of the core rope (211) and a second heat-conducting insulation layer (2132) wrapped around the outside of the first heat-conducting insulation layer (2131).

3. The antifreeze chassis according to claim 1, characterized in that: The heating wire (212) is spirally wound around the outside of the core rope (211).

4. The antifreeze chassis according to claim 1, characterized in that: The heating device (20) further comprises a power source (22), and the power source (22) is electrically connected to the heating belt (21) via a wire (23).

5. The antifreeze chassis according to claim 4, characterized in that: A fixing seat (40) is provided at the connection position between the wire (23) and the heating belt (21), a positioning hole (41) is provided on the fixing seat (40), and the fixing seat (40) is fixed to the chassis body (10) by means of screws engaging with the positioning hole (41).

6. The antifreeze chassis according to claim 1, characterized in that: The anti-freezing chassis further comprises a fixing strip (50), wherein the fixing strip (50) clamps and fixes the heating belt (21) to the chassis body (10).

7. An antifreeze chassis according to claim 6, characterized in that: The fixing strip (50) comprises a mounting portion (51) and a clamping portion (52) connected to one end of the mounting portion (51); the mounting portion (51) is provided with a mounting hole (511); and the clamping portion (52) is provided with a strip groove (521) for the heating belt (21) to pass through.

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