Defrosting system for low-temperature refrigerating unit

Abstract

The utility model discloses a defrosting system for a low-temperature refrigerating unit, which belongs to the technical field of defrosting devices and is characterized in that the side surface of an intelligent controller is fixedly connected with a heater, the side surface of the heater is provided with symmetrical clamping grooves, the inner walls of the clamping grooves are clamped with clamping blocks, and the surfaces of the clamping blocks are fixedly connected with evaporator fins; the defrosting system for the low-temperature refrigeration unit comprises a heater, a dovetail-shaped clamping groove is formed in the surface of the heater, a dovetail-shaped clamping block is arranged at one end of an evaporator fin, a positioning sleeve is fixedly connected to one end of the heater, a positioning groove is formed in the side face of the positioning sleeve, and an evaporator collecting pipe is connected to the inner wall of the positioning groove in a contact mode. Compared with the prior art, the evaporator fin and the heater can be rapidly combined, later independent replacement and replacement are facilitated, the assembling position of the evaporator collecting pipe can be rapidly fixed through the arranged positioning sleeve and the arranged positioning rod, the surface of the evaporator collecting pipe cannot be damaged, and assembling safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to defrosting device technical field more specifically, relate to a kind of defrosting system for low-temperature refrigeration unit. BACKGROUND

[0002] Refrigeration unit adopts electric compressor refrigeration and defrosting heating, when evaporator is frosted, the direction of refrigerant flow is changed by four-way reversing valve to heat evaporator, such as the defrosting system of a kind of new energy truck refrigeration unit disclosed in the announcement No.CN206478913U, but the evaporator fin and evaporator header of general defrosting system setting are all fixed with heater surface by welding mode, not only reduce the assembly efficiency of evaporator fin and evaporator header, but also easily cause the surface damage perforation of evaporator header, reduce the assembly safety of evaporator header, therefore, we design a kind of defrosting system for low-temperature refrigeration unit to solve the above problems. SUMMARY

[0003] In view of the problems in the prior art, the purpose of the utility model is to provide a kind of defrosting system for low-temperature refrigeration unit, the defrosting system for low-temperature refrigeration unit can be quickly combined with heater by the dovetail-shaped clamping slot of heater surface and the dovetail-shaped clamping block of one end of evaporator fin, and it is convenient to replace separately in later period, and the assembly position of evaporator header can be quickly fixed by the positioning sleeve and positioning rod, so that the surface of evaporator header is not damaged, and the assembly safety is improved.

[0004] To solve the above problems, the utility model adopts the following technical scheme.

[0005] A kind of defrosting system for low-temperature refrigeration unit, including intelligent controller, the side surface of the intelligent controller is fixedly connected with heater, the side surface of the heater is equipped with the symmetrical clamping slot, the inner wall of the clamping slot is clamped with clamping block, the surface of the clamping block is fixedly connected with evaporator fin, one end of the heater is fixedly connected with positioning sleeve, the side surface of the positioning sleeve is equipped with positioning slot, the inner wall of the positioning slot is contact connection with evaporator header pipe, the surface of the evaporator header pipe is contact connection with non-slip pad, the surface of the positioning sleeve is connected with positioning rod by screw thread, one end of the positioning rod is fixedly connected with limit block, the other end of the positioning rod is fixedly connected with extrusion plate, the surface of the extrusion plate is fixedly connected with extrusion pad, the defrosting system for low-temperature refrigeration unit can be quickly combined with heater by the dovetail-shaped clamping slot of heater surface and the dovetail-shaped clamping block of one end of evaporator fin, and it is convenient to replace separately in later period, and the assembly position of evaporator header can be quickly fixed by the positioning sleeve and positioning rod, so that the surface of evaporator header is not damaged, and the assembly safety is improved.

[0006] Further, the surface material of the clamping block and the heater is same, and both are made of heat-conducting metal material, the shape of the clamping block and the clamping groove is dovetail shape, the clamping block and the heater shell material is same, so that the thermal expansion and contraction coefficient is same, the connection stability of the clamping block and the clamping groove is ensured.

[0007] Further, the surface of the anti-skid pad is fixedly connected with the surface of the positioning groove, the anti-skid pad is made of high and low temperature resistant elastic material, and the surface of the anti-skid pad is provided with anti-skid lines, so that the anti-skid pad has the effects of buffering and anti-skid, and the assembly safety and stability of the evaporator header are ensured.

[0008] Further, the surface of the positioning sleeve is provided with an emptying groove, the bottom of the emptying groove is provided with a threaded hole, the inner wall of the emptying groove is in contact connection with the surface of the limiting block, the depth of the emptying groove is greater than or equal to the thickness of the limiting block, the limiting block can be prevented from protruding from the surface of the positioning sleeve, and the effect of preventing scratching is achieved.

[0009] Further, the surface of the extrusion pad is in contact connection with the surface of the evaporator header, and the extrusion pad is made of high and low temperature resistant elastic material, so that the surface of the extrusion plate and the evaporator header can be prevented from being abraded.

[0010] Further, the surface of the limiting block is provided with an internal hexagonal groove, and the internal hexagonal groove is convenient for a user to rotate and assemble or disassemble the positioning rod by using an internal hexagonal wrench.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] (1) the dovetail-shaped clamping groove arranged on the surface of the heater and the dovetail-shaped clamping block arranged on one end of the evaporator fin can quickly combine the evaporator fin and the heater, and are convenient for separate disassembly and replacement in the later period, and the positioning sleeve and the positioning rod arranged in the present application can quickly fix the assembly position of the evaporator header, and will not cause damage to the surface of the evaporator header, thereby improving the assembly safety.

[0013] (2) the surface material of the clamping block and the heater is same, and both are made of heat-conducting metal material, the shape of the clamping block and the clamping groove is dovetail shape, the clamping block and the heater shell material is same, so that the thermal expansion and contraction coefficient is same, the connection stability of the clamping block and the clamping groove is ensured.

[0014] (3) the surface of the anti-skid pad is fixedly connected with the surface of the positioning groove, the anti-skid pad is made of high and low temperature resistant elastic material, the surface of the anti-skid pad is provided with anti-skid lines, the anti-skid pad has the effects of buffering and anti-skid, and the assembly safety and stability of the evaporator header are ensured.

[0015] (4) The positioning sleeve is provided with an emptying groove on the surface, the bottom of the emptying groove is provided with a threaded hole, the inner wall of the emptying groove is in contact with the surface of the limiting block, the depth of the emptying groove is greater than or equal to the thickness of the limiting block, the limiting block can be prevented from protruding from the surface of the positioning sleeve, and the effect of preventing scratching is achieved.

[0016] (5) The surface of the extrusion pad is in contact with the surface of the evaporator header, and the extrusion pad is made of high and low temperature resistant elastic material, so that the surface of the extrusion plate and the evaporator header can be prevented from being worn.

[0017] (6) The surface of the limiting block is provided with an internal hexagonal groove, and the internal hexagonal groove is convenient for the user to rotate and disassemble the positioning rod through an internal hexagonal wrench. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a whole structure schematic view of the utility model;

[0019] Fig. 2 It is a positioning sleeve structure bottom view of the utility model;

[0020] Fig. 3 It is a positioning rod structure bottom view of the utility model.

[0021] Explanation of reference numerals in the drawing:

[0022] 1 intelligent controller, 2 heater, 21 card slot, 3 evaporator fin, 31 clamping block, 4 positioning sleeve, 41 positioning groove, 42 threaded hole, 43 emptying groove, 44 non-slip pad, 5 positioning rod, 51 limiting block, 52 internal hexagonal groove, 53 extrusion plate, 54 extrusion pad, 6 evaporator header. DETAILED DESCRIPTION

[0023] 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figs. 1-3 A defrosting system for a low-temperature refrigeration unit, comprising an intelligent controller 1, please refer to Figs. 1-3The side of the intelligent controller 1 is fixedly connected with a heater 2, the intelligent controller 1 is a PTC controller, the heater 2 is a PTC heater group, two heaters 2 are arranged, and the intelligent controller 1 is further connected with an evaporator flat tube and the like. When the evaporator fin 3 and the evaporator flat tube are frosted, the heater 2 works to heat and defrost the surface. The structure and working principle are well known to those skilled in the art, and will not be described in detail here. The side of the heater 2 is provided with symmetrical clamping grooves 21, the inner wall of the clamping groove 21 is clamped with a clamping block 31, the surface of the clamping block 31 is fixedly connected with the evaporator fin 3, one end of the heater 2 is fixedly connected with a positioning sleeve 4, the side of the positioning sleeve 4 is provided with a positioning groove 41, the inner wall of the positioning groove 41 is in contact with the evaporator header 6, the surface of the evaporator header 6 is in contact with the anti-skid pad 44, the surface of the positioning sleeve 4 is in threaded connection with the positioning rod 5, one end of the positioning rod 5 is fixedly connected with the limiting block 51, the surface of the limiting block 51 is provided with an internal hexagonal groove 52, the internal hexagonal groove 52 facilitates the user to rotate and disassemble the positioning rod 5 through an internal hexagonal wrench, the other end of the positioning rod 5 is fixedly connected with the extrusion plate 53, and the surface of the extrusion plate 53 is fixedly connected with the extrusion pad 54.

[0025] Please refer to Fig. 1 and 2 The surface materials of the clamping block 31 and the heater 2 are the same, both are made of heat-conducting metal material, the shapes of the clamping block 31 and the clamping groove 21 are dovetail-shaped, the clamping block 31 and the heater 2 have the same shell material, so that the thermal expansion and contraction coefficients are the same, the connection stability of the clamping block 31 and the clamping groove 21 is ensured, the surface of the anti-skid pad 44 is fixedly connected with the surface of the positioning groove 41, the anti-skid pad 44 is made of high and low temperature resistant elastic material, the surface of the anti-skid pad 44 is provided with anti-skid lines, the anti-skid pad 44 has the effects of buffering and anti-skid, and the assembly safety and stability of the evaporator header 6 are ensured.

[0026] Please refer to Fig. 2 and 3 The surface of the positioning sleeve 4 is provided with an empty slot 43, the bottom of the empty slot 43 is provided with a threaded hole 42, the inner wall of the empty slot 43 is in contact with the surface of the limiting block 51, the depth of the empty slot 43 is greater than or equal to the thickness of the limiting block 51, so that the limiting block 51 can not protrude from the surface of the positioning sleeve 4, and the effect of preventing scratching is achieved, the surface of the extrusion pad 54 is in contact with the surface of the evaporator header 6, and the extrusion pad 54 is made of high and low temperature resistant elastic material, so that the surface of the extrusion plate 53 can be prevented from being abraded with the surface of the evaporator header 6.

[0027] The defrosting system for the low-temperature refrigeration unit can first fit the evaporator header pipe 6 into the positioning groove 41 when assembling the evaporator header pipe 6, then rotate the positioning rod 5 clockwise, the positioning rod 5 moves clockwise to drive the extrusion plate 53 to extrude the surface of the evaporator header pipe 6, thereby fixing the installation position of the evaporator header pipe 6, then the clamping block 31 of the evaporator fin 3 is clamped into the clamping groove 21, the dovetail-shaped clamping groove 21 arranged on the surface of the heater 2 and the dovetail-shaped clamping block 31 arranged at one end of the evaporator fin 3 can quickly combine the evaporator fin 3 with the heater 2, and facilitate the later separate replacement, and the positioning sleeve 4 and the positioning rod 5 can quickly fix the assembly position of the evaporator header pipe 6, and will not cause damage to the surface of the evaporator header pipe 6, thereby improving the assembly safety.

[0028] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, should be covered within the protection scope of the present application.

Claims

1. A defrosting system for a low temperature refrigeration unit comprising an intelligent controller (1) characterized in that: The side of the intelligent controller (1) is fixedly connected with a heater (2), the side of the heater (2) is provided with symmetrical clamping grooves (21), the inner wall of the clamping groove (21) is clamped with a clamping block (31), the surface of the clamping block (31) is fixedly connected with an evaporator fin (3), one end of the heater (2) is fixedly connected with a positioning sleeve (4), the side of the positioning sleeve (4) is provided with a positioning groove (41), the inner wall of the positioning groove (41) is contactly connected with an evaporator header (6), the surface of the evaporator header (6) is contactly connected with an anti-skid pad (44), the surface of the positioning sleeve (4) is threadedly connected with a positioning rod (5), one end of the positioning rod (5) is fixedly connected with a limiting block (51), the other end of the positioning rod (5) is fixedly connected with an extrusion plate (53), the surface of the extrusion plate (53) is fixedly connected with an extrusion pad (54).

2. A defrosting system for a low temperature refrigeration unit as defined in claim 1, characterized in that: The surface materials of the clamping block (31) and the heater (2) are the same, and both are made of heat-conducting metal material, and the shapes of the clamping block (31) and the clamping groove (21) are dovetail shapes.

3. A defrosting system for a low temperature refrigeration unit as defined in claim 1, wherein: The surface of the anti-skid pad (44) is fixedly connected with the surface of the positioning groove (41), the anti-skid pad (44) is made of high and low temperature resistant elastic material, and the surface of the anti-skid pad (44) is provided with anti-skid lines.

4. A defrosting system for a low temperature refrigeration unit as defined in claim 1, wherein: The surface of the positioning sleeve (4) is provided with an emptying groove (43), the bottom of the emptying groove (43) is provided with a threaded hole (42), and the inner wall of the emptying groove (43) is contactly connected with the surface of the limiting block (51).

5. A defrosting system for a low temperature refrigeration unit as defined in claim 1, wherein: The surface of the extrusion pad (54) is contactly connected with the surface of the evaporator header (6), and the extrusion pad (54) is made of high and low temperature resistant elastic material.

6. A defrosting system for a low temperature refrigeration unit as defined in claim 1, wherein: The surface of the limiting block (51) is provided with an internal hexagonal groove (52).

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