Winter anti-freezing electric heat tracing evaporator

Abstract

The utility model discloses a winter anti-freezing electric heat tracing evaporator which comprises an evaporator frame, the evaporator frame is a frame of a rectangular structure, a main inlet pipe and a main outlet pipe are arranged on one side of the evaporator frame, and the main inlet pipe and the main outlet pipe are respectively connected with a plurality of heat dissipation pipes through a plurality of flow dividing pipes. A plurality of radiating fins are arranged outside the radiating pipes in a sleeving manner; and an electric heat tracing temperature control structure is arranged on one side of the evaporator frame. According to the winter anti-freezing electric heat tracing evaporator, through a two-stage expansion structure, on one hand, heat of an electric heat tracing band is homogenized through a plurality of heat exchange plates, comprehensive and uniform heat transfer is achieved by coaxially wrapping a heat dissipation pipe through a temperature control sleeve, and the problem of local frosting caused by poor contact in a traditional winding mode is solved; and meanwhile, a large number of prefabricated and formed pipe fittings are adopted for connection, production is simple, and it is ensured that the evaporator operates efficiently in a frostless mode in the low-temperature and high-humidity environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to evaporator technical field, concretely is a winter anti -icing electric heat tracing evaporator. BACKGROUND

[0002] In modern refrigeration temperature control system, evaporator is an important component in the system, evaporator in the application process, mainly by coil and fin composition, refrigerant in evaporator absorbs heat gasification, absorbs heat from the surrounding environment, thereby realizing the temperature reduction.

[0003] However, due to the refrigerant in the evaporator absorbs the heat of external air, leading to the evaporator surface frost easily, especially in winter's low temperature and relative high humidity environment makes the evaporator frost problem becomes extremely serious and frequent, using electric heat tracing band attached on the evaporator, can maintain the external air temperature of evaporator work above the frost point temperature, fundamentally prevent or greatly delay the frost layer formation, but the electric heat tracing band of present stage can only be attached on the outer portion of heat exchanger coil by winding, cannot fully contact with heat exchanger coil, will cause the evaporator surface local frost problem, in view of this, to the above problem in-depth research, so there is the case. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a winter anti -icing electric heat tracing evaporator, solves the prior art problem.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a winter anti -icing electric heat tracing evaporator, including evaporator frame, the evaporator frame is the frame of rectangular structure, one side of the evaporator frame is provided with total inlet pipe and total outlet pipe, the total inlet pipe and total outlet pipe are connected with a plurality of radiators through a plurality of branch pipes respectively, a plurality of radiators are provided with a plurality of radiators, one side of the evaporator frame is provided with electric heat tracing temperature control structure;

[0006] The electric heat tracing temperature control structure includes the mounting plate, and the mounting plate is installed on the evaporator frame, a plurality of electric heat tracing bands are arranged on one side of the mounting plate, and a heat exchange plate is extended from one side of the mounting plate, and a plurality of electric heat tracing bands and heat exchange plates are arranged in close contact.

[0007] The electric heat tracing temperature control structure further includes a plurality of temperature control sleeve pipes, a plurality of temperature control sleeve pipes are arranged coaxially with the radiators, a plurality of heat exchange buckles are extended from the end of a plurality of temperature control sleeve pipes, a plurality of heat exchange buckles are clamped with the heat exchange plate, a plurality of heat exchange insertion strips are arranged in matrix on the heat exchange plate, and a plurality of insertion slots are arranged on the heat exchange buckle and correspond to a plurality of heat exchange insertion strips.

[0008] Preferably, a plurality of radiators are U-shaped structures and are distributed on a plurality of radiators.

[0009] Preferably, the heat exchange plates are provided with a plurality of reinforced heat exchange grooves in a linear array, and the plurality of electric heat tracing tapes are arranged in parallel on the reinforced heat exchange grooves.

[0010] Preferably, the mounting plate is a rectangular plate, and the mounting plate is connected with the evaporator frame through a plurality of bolts.

[0011] Preferably, the mounting plate is provided with a controller in contact with the electric heat tracing tape.

[0012] Preferably, a plurality of ventilation grooves with arcuate structures are uniformly arranged on the temperature control sleeve, and the temperature control sleeve is wrapped around the heat dissipation pipe. Beneficial effects

[0013] The utility model provides a winter anti -icing electric heat tracing evaporator. Have the following beneficial effects: this winter anti -icing electric heat tracing evaporator passes through two -stage extension structure, one aspect passes through a plurality of heat exchange plates even electric heat tracing tape heat, realizes overall, even heat transfer through temperature control sleeve coaxial package heat dissipation pipe again, has solved the partial frost problem of traditional winding mode contact bad, connects a large number of prefabricated pipe fittings simultaneously, and the production is simple, and the frost -free high -efficient operation of evaporator under low temperature and high humidity environment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the first three -dimensional structure schematic view of winter anti -icing electric heat tracing evaporator of the utility model.

[0015] Fig. 2 It is the second three -dimensional structure schematic view of winter anti -icing electric heat tracing evaporator of the utility model.

[0016] Fig. 3 It is the partial enlarged structure schematic view of winter anti -icing electric heat tracing evaporator of the utility model.

[0017] In the drawing: 1, evaporator frame;2, total inlet pipe;3, total outlet pipe;4, heat dissipation pipe;5, heat dissipation fin;6, electric heat tracing temperature control structure;61, mounting plate;62, electric heat tracing tape;63, heat exchange plate;64, temperature control sleeve;65, heat exchange buckle;66, heat exchange insert strip;67, slot. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] Please refer to Figs. 1-3 The utility model provides a kind of implementation scheme: in winter's low temperature and relatively high humidity environment, make that evaporator frosting problem becomes exceptionally serious and frequent, using electric heat tracing band 62 is attached to evaporator, can maintain the outside air temperature of evaporator and work above frost point temperature, fundamentally prevent or greatly delay frost layer formation, but the electric heat tracing band 62 of present stage can only be attached to the outside of heat exchanger coil by winding mode, cannot be contacted with heat exchanger coil sufficiently, and local frosting problem of evaporator surface can be caused.

[0020] To solve the problem of uneven electric heat tracing leading to local frosting, the application discloses a winter anti-freezing electric heat tracing evaporator, comprising a main support structure evaporator frame 1, which is a rectangular frame. One side of the evaporator frame 1 is provided with a total inlet pipe 2 for receiving working medium from a compressor, and the evaporator frame 1 is also provided with a total outlet pipe 3 for returning the working medium after heat absorption and vaporization to the compressor. The total inlet pipe 2 and the total outlet pipe 3 are respectively connected with a plurality of heat dissipation pipes 4 through a plurality of shunt pipes. The plurality of heat dissipation pipes 4 are externally provided with a plurality of heat dissipation fins 5 for increasing heat exchange area. One side of the evaporator frame 1 is provided with a core electric heat tracing temperature control structure 6 for realizing uniform heat tracing and anti-freezing.

[0021] According to the description attached Figs. 1-3 It can be known that the electric heat tracing temperature control structure 6 comprises a mounting plate 61 stably mounted on the evaporator frame 1 through a plurality of bolts. A plurality of electric heat tracing bands 62 are arranged on one side of the mounting plate 61 as heat sources. A heat exchange plate 63 is extended from one side of the mounting plate 61 as a distribution core. The plurality of electric heat tracing bands 62 are closely arranged with the heat exchange plate 63 to ensure efficient heat conduction to the heat exchange plate 63.

[0022] The electric heat tracing temperature control structure 6 further comprises a plurality of temperature control sleeve pipes 64 for realizing uniform heat transfer to the heat dissipation pipes 4. The plurality of temperature control sleeve pipes 64 are coaxially arranged with the heat dissipation pipes 4, i.e., the temperature control sleeve pipes 64 are wrapped outside the heat dissipation pipes 4. End portions of the plurality of temperature control sleeve pipes 64 are extended with a plurality of heat exchange buckles 65. The heat exchange buckles 65 are manufactured by an integral forming hot pressing process with the temperature control sleeve pipes 64. The heat exchange buckles 65 are prefabricated according to the pipe diameter of the heat dissipation pipes 4 for convenient production. The plurality of heat exchange buckles 65 are clamped with the heat exchange plate 63 to form detachable thermal connection. The heat exchange plate 63 is provided with a plurality of heat exchange insertion strips 66 arranged in a matrix. The heat exchange buckles 65 are provided with a plurality of insertion grooves 67 corresponding to the plurality of heat exchange insertion strips 66 for enhancing heat exchange contact area.

[0023] Workflow: the electric heat tracing band 62 generates heat when powered on, the heat is first transferred to the closely attached heat exchange plate 63, which acts as a large heat conductor, evenly distributing heat throughout the plate surface. Heat is transferred from the heat exchange plate 63 to the heat exchange buckle 65, which is integrally connected to the end of the temperature control sleeve 64, and the heat is efficiently conducted to the temperature control sleeve 64 wrapped around the heat dissipation pipe 4 through the heat exchange buckle 65. The temperature control sleeve 64 closely fits the outer wall of the heat dissipation pipe 4, evenly and comprehensively transferring heat to the outer surface of the heat dissipation pipe 4. This design uses a two-stage dispersion structure to wrap the exposed position of the heat exchange pipe, ensuring that the temperature of the surface of the heat dissipation pipe 4 is evenly raised and maintained above the frosting point. The low-temperature working medium flowing through the inside of the heat dissipation pipe 4 cannot freeze due to the high surface temperature of the heat dissipation pipe 4 above the dew point temperature while absorbing external heat. Through this indirect but uniform and comprehensive heat transfer method, the problem of local low-temperature point frosting caused by poor contact of the traditional winding electric heat tracing band 62 is completely avoided.

[0024] As a preferred solution, further, the plurality of heat dissipation pipes 4 are in U-shaped structure and distributed on the plurality of heat dissipation fins 5. The U-shaped structure increases the heat exchange length of a single pipe and optimizes the space utilization. The heat dissipation fins 5 are arranged in a linear array as fins to increase the effective heat exchange area of the heat dissipation pipe 4 and the air, and improve the heat exchange efficiency of the evaporator in the frost-free state.

[0025] As a preferred solution, further, a plurality of reinforced heat exchange grooves are arranged in a linear array on the heat exchange plate 63, and a plurality of electric heat tracing bands 62 are arranged in parallel on the reinforced heat exchange grooves. The reinforced heat exchange grooves provide precise positioning channels for the electric heat tracing bands 62, ensuring that each electric heat tracing band 62 can be in close and large-area contact with the groove wall of the heat exchange plate 63, maximizing the heat conduction efficiency.

[0026] As a preferred solution, further, the mounting plate 61 is a rectangular plate, and the mounting plate 61 is connected to the evaporator frame 1 by a plurality of bolts, providing a stable, reliable and detachable connection method for easy maintenance and replacement.

[0027] As a preferred solution, further, a controller is arranged on the mounting plate 61 and in contact with the electric heat tracing band 62. The controller monitors the temperature of the heat dissipation pipe 4 or the environment in real time, and can be realized by a temperature sensor arranged on the temperature control sleeve 64 or the heat dissipation pipe 4. According to the existing technology, the temperature sensor is not disclosed. According to the set anti-freezing temperature threshold, the controller automatically controls the on-off and power output of the electric heat tracing band 62.

[0028] As a preferred solution, further, the temperature control sleeve 64 is evenly provided with a plurality of arcuate structure ventilation slots, the temperature control sleeve 64 is wrapped outside the heat dissipation pipe 4, the ventilation slots allow air to flow between the fins 5 and around the temperature control sleeve 64, ensuring that the normal air-side heat exchange function of the evaporator is not hindered.

[0029] In summary, the winter anti-freezing electric heat tracing evaporator, through the double-stage expansion structure, on the one hand, the heat of the electric heat tracing band 62 is evenly distributed through the plurality of heat exchange plates 63, and then the temperature control sleeve 64 is coaxially wrapped around the heat dissipation pipe 4 to realize overall and uniform heat transfer, solving the problem of local frosting caused by poor contact in the traditional winding mode, and a large number of prefabricated pipe fittings are used for connection, which is simple to produce, and ensures that the evaporator operates efficiently without frost in a low-temperature and high-humidity environment.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A winter-resistant electric heating evaporator, comprising an evaporator frame (1), wherein the evaporator frame (1) is a rectangular frame, and a main inlet pipe (2) and a main outlet pipe (3) are provided on one side of the evaporator frame (1), wherein the main inlet pipe (2) and the main outlet pipe (3) are respectively connected to a plurality of heat dissipation pipes (4) through a plurality of branch pipes, and a plurality of heat dissipation fins (5) are provided on the plurality of heat dissipation pipes (4), characterized in that, An electric heat tracing and temperature control structure (6) is provided on one side of the evaporator frame (1). The electric heat tracing temperature control structure (6) includes a mounting plate (61), which is mounted on the evaporator frame (1). Several electric heat tracing tapes (62) are provided on one side of the mounting plate (61), and a heat exchange plate (63) extends from one side of the mounting plate (61). Several electric heat tracing tapes (62) are attached to the heat exchange plate (63). The electric heat tracing and temperature control structure (6) also includes several temperature control sleeves (64), which are coaxially arranged with the heat dissipation pipe (4). Several heat exchange buckles (65) extend from the ends of the several temperature control sleeves (64), which are engaged with the heat exchange plate (63). Several heat exchange strips (66) are arranged in a matrix on the heat exchange plate (63), and several slots (67) are provided on the heat exchange buckles (65) corresponding to the several heat exchange strips (66).

2. The winter antifreeze electric heat evaporator according to claim 1, characterized in that, Several of the heat pipes (4) are U-shaped and distributed on several heat sinks (5).

3. The winter antifreeze electric heat evaporator according to claim 2, characterized in that, The heat exchange plate (63) is provided with a plurality of enhanced heat exchange grooves in a linear array, and a plurality of electric heat tracing tapes (62) are arranged in parallel on the enhanced heat exchange grooves.

4. The winter antifreeze electric heat evaporator according to claim 3, characterized in that, The mounting plate (61) is a rectangular plate, and the mounting plate (61) is connected to the evaporator frame (1) by several bolts.

5. A winter-resistant electric heat evaporator according to claim 4, characterized in that, The mounting plate (61) is equipped with a controller that contacts the electric heating tape (62).

6. The winter antifreeze electric heat evaporator according to claim 5, characterized in that, Several ventilation slots with arc-shaped structures are evenly provided on several of the temperature control sleeves (64), and the temperature control sleeves (64) are wrapped around the heat dissipation pipe (4).

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