Electric heating tube integrated fin heat exchanger

Abstract

The utility model relates to an electric heating tube integrated fin heat exchanger, which comprises a coil body, a gas collecting tube assembly, a distributor assembly and an electric heating tube, the coil body comprises a protective plate, a copper tube and aluminum foils, the protective plate is used as an outer frame of the coil body, the copper tube and the aluminum foils are positioned in a frame formed by the protective plate, the copper tube is inserted among a plurality of aluminum foils, and the distributor assembly is arranged in the coil body. The gas collecting pipe assembly, the distributor assembly and the electric heating pipe are all connected with the coil pipe body, and the electric heating pipe is installed between the front row of fins and the rear row of fins of the coil pipe body and fixed to a protection plate of the coil pipe body. The utility model has the beneficial effects that the electric heating tube is directly arranged between the front and rear rows of fins of the coil body, so that the structure is more compact, the space utilization is more optimized, and the problem that the functional section of the electric heating tube in a unit occupies more internal space of the unit is solved; the problem that defrosting cannot be quickly and effectively achieved after the coil pipe is frosted is effectively solved through the penetrating type assembly and the upper-sparse and lower-dense arrangement mode of the electric heating pipes, the unit cost is saved, and the use performance of the unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fin heat exchangers, in particular to an electric heating tube integrated fin heat exchanger. Background Art

[0002] Currently, within modular air conditioning units, the electric heater and finned heat exchanger are separate functional sections, located in different locations within the unit, each occupying a portion of the space. The preheating electric heating tubes are placed in the front functional section of the finned heat exchanger, while the reheating electric heating tubes are placed in the rear functional section of the finned heat exchanger. This increases the length of the unit and, consequently, the cost of the unit. Another issue is that when the unit is operating at low temperatures and the air is entering, the finned heat exchanger is prone to frost, especially on the lower half of the coil where water accumulates, where frost is more pronounced, affecting the unit's performance. Summary of the Invention

[0003] The utility model aims to solve the above-mentioned shortcomings of the prior art and provide an electric heating tube integrated fin heat exchanger with better performance and more compact structure.

[0004] The utility model adopts a technical solution to solve its technical problems: this electric heating tube integrated fin heat exchanger includes a coil body, an air collecting pipe assembly, a distributor assembly and an electric heating tube. The coil body includes a guard plate, a copper tube and aluminum foil. The guard plate serves as the outer frame of the coil body. The copper tube and the aluminum foil are located in the frame formed by the guard plate. The copper tube is inserted between several pieces of aluminum foil. The air collecting pipe assembly, the distributor assembly and the electric heating tube are all connected to the coil body. The electric heating tube is installed between the front and rear rows of fins of the coil body and is fixed to the guard plate of the coil body.

[0005] The gas collecting pipe assembly includes a copper pipe, a gas collecting pipe and a tee. One end of the copper pipe is connected to the copper pipe of the coil body, and the other end is connected to the gas collecting pipe. The gas collecting pipe is connected to the tee.

[0006] The distributor assembly comprises a distribution head and a capillary tube. One end of the capillary tube is connected to the copper tube of the coil body, and the other end is connected to the distribution head. The distribution head is connected to a plurality of capillaries.

[0007] The copper tubes of the coil body are connected by U-shaped copper elbows. The coil body is multi-row, and each row of coils is connected by a gas collecting pipe assembly, a distributor assembly and a U-shaped copper elbow to form multiple loops.

[0008] Both ends of the electric heating tube are sealed with silicone rubber.

[0009] The electric heating tubes are inserted into the front and rear rows of fins of the coil body in a sparse upper and dense lower manner.

[0010] The beneficial effect of the utility model is that the electric heating tube of the utility model is directly installed between the front and rear rows of fins of the coil body, making the overall structure more compact and optimizing space utilization, solving the problem that the functional section of the electric heating tube inside the unit occupies more space inside the unit, and the interlaced assembly of the electric heating tube and the sparse upper and dense lower arrangement effectively solve the problem that the coil cannot be defrosted quickly and effectively after frosting, saving the cost of the unit and improving the performance of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a side view of the structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the utility model from a top view;

[0014] Figure 4 It is a partially cutaway stereoscopic schematic diagram.

[0015] Description of the accompanying drawings: outgoing copper tube 1, gas collecting tube 2, tee 3, distribution head 4, capillary tube 5, U-shaped copper elbow 6, electric heating tube 7, aluminum foil 8, copper tube 9, protective plate 10. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] As shown in the figure, this electric heating tube integrated fin heat exchanger includes a coil body, an air collecting pipe assembly, a distributor assembly and an electric heating pipe 7. The coil body includes a guard plate 10, a copper tube 9 and an aluminum foil 8. The guard plate 10 serves as the outer frame of the coil body. The copper tube 9 and the aluminum foil 8 are located in the frame formed by the guard plate 10. The copper tube 9 is inserted between several pieces of aluminum foil 8. The air collecting pipe assembly, the distributor assembly and the electric heating pipe 7 are all connected to the coil body. The electric heating pipe 7 is installed between the front and rear rows of fins of the coil body, saving the overall space of the unit. The electric heating pipe 7 is fixed on the guard plate of the coil body. The electric heating pipe 7 is inserted in the front and rear rows of fins of the coil body in a sparse-up and dense-down manner. The two ends of the electric heating pipe 7 are sealed with silicone rubber to prevent leakage, and leads are connected to both ends.

[0018] The gas manifold assembly includes a copper outlet tube 1, a gas manifold 2, and a tee 3. One end of the outlet tube 1 is connected to the copper tube 9 of the coil body, and the other end is connected to the gas manifold 2. The gas manifold 2 is connected to the tee 3, and one end of the tee 3 is connected to the piping of the refrigeration components. The distributor assembly includes a distribution head 4 and a capillary tube 5. One end of the capillary tube 5 is connected to the copper tube 9 of the coil body, and the other end is connected to the distribution head 4. The distribution head 4 is connected to several capillary tubes 5, and the other end of the distribution head 4 is connected to the piping of the refrigeration components. The copper tubes of the coil body are connected by U-shaped copper elbows 6. The coil body is multi-row, and each row of coils is connected by the gas manifold assembly, the distributor assembly, and the U-shaped copper elbows 6, forming multiple loops.

[0019] The electric heating tubes 7 are fixed in the front and rear rows of the coil body and inserted in the fins. When preheating, the electric heating tubes 7 in the front row of the coil body are turned on to preheat the unit. When reheating is required, the electric heating tubes 7 in the rear row of the coil body are turned on to reheat the unit.

[0020] When the unit's air intake is low and the coils are frosted, the front and rear rows of electric heaters can be activated for quick and effective defrosting. Generally, when frosting occurs, water from the upper coils flows down the fins to the lower coils, where the water volume is higher and the frosting is more severe than on the upper coils. Therefore, the electric heating elements are distributed sparsely at the top and densely at the bottom, allowing for quick and effective defrosting of both coils simultaneously.

[0021] The utility model can solve the problems of preheating, reheating and defrosting of the unit at one time, save the internal space of the unit, and can quickly and effectively defrost the coil when the coil is frosted due to the low temperature air inlet condition of the unit, thereby improving the performance of the unit.

[0022] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. An electric heating tube integrated fin heat exchanger, comprising a coil body, a gas collecting pipe assembly, a distributor assembly and an electric heating tube (7), characterized in that: The coil body comprises a guard plate (10), a copper tube (9) and an aluminum foil (8). The guard plate (10) serves as an outer frame of the coil body. The copper tube (9) and the aluminum foil (8) are located in the frame formed by the guard plate (10). The copper tube (9) is inserted between a plurality of pieces of aluminum foil (8). The gas collecting pipe assembly, the distributor assembly and the electric heating tube (7) are all connected to the coil body. The electric heating tube (7) is installed between the front and rear rows of fins of the coil body. The electric heating tube (7) is fixed on the guard plate (10) of the coil body.

2. The electric heating tube integrated fin heat exchanger according to claim 1, characterized in that: The gas collecting pipe assembly comprises an outlet copper pipe (1), a gas collecting pipe (2) and a tee (3); one end of the outlet copper pipe (1) is connected to the copper pipe (9) of the coil body, and the other end is connected to the gas collecting pipe (2); the gas collecting pipe (2) is connected to the tee (3).

3. The electric heating tube integrated fin heat exchanger according to claim 1 or 2, characterized in that: The distributor assembly comprises a distribution head (4) and a capillary tube (5). One end of the capillary tube (5) is connected to the copper tube (9) of the coil body, and the other end is connected to the distribution head (4). The distribution head (4) is connected to a plurality of capillaries (5).

4. The electric heating tube integrated fin heat exchanger according to claim 3 is characterized in that: The copper tubes (9) of the coil body are connected by U-shaped copper elbows (6). The coil body is multi-row, and each row of coils is connected by a gas collecting pipe assembly, a distributor assembly and a U-shaped copper elbow (6) to form multiple loops.

5. The electric heating tube integrated fin heat exchanger according to claim 4, characterized in that: Both ends of the electric heating tube (7) are sealed with silicone rubber.

6. The electric heating tube integrated fin heat exchanger according to claim 5, characterized in that: The electric heating tubes (7) are inserted into the front and rear rows of fins of the coil body in a sparse upper and dense lower manner.

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