Stainless steel evaporator of snow melting machine

Abstract

The stainless steel evaporator of the snow melting machine comprises an outer barrel, the outer barrel is filled with a refrigerating medium, and liquid is sprayed to the outer surface of the outer barrel, condensed and then scraped by a scraper; the inner barrel is a cylindrical shell which is provided with two open ends and is coaxial with the outer barrel, the first end of the inner barrel is connected with the end part of the outer barrel, and the second end of the inner barrel is outwards provided with a folded edge, so that a closed refrigeration cavity is formed between the inner barrel and the outer barrel; a notch is formed in the folded edge, a liquid inlet groove communicated with the notch is formed in the refrigerating cavity, and a refrigerating medium enters the refrigerating cavity through the liquid inlet groove. And the liquid inlet pipe extends into the liquid inlet groove through the notch. An original line contact conduction mode is changed into a surface contact conduction mode, the problems of poor contact and low conduction efficiency between the coil pipe and the outer barrel are effectively solved, a refrigerating medium rapidly absorbs heat of the outer barrel, and therefore the condensation effect is accelerated, and the refrigerating efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration devices, and in particular to a stainless steel evaporator of a snow melt machine. Background Art

[0002] At present, the evaporators of commonly used ice machines, ice cream machines and snow melt machines are mostly evaporators with spiral copper tubes. In this evaporator, a spiral tube is placed in the inner or outer barrel, and the refrigerant flows in the spiral tube. After the spiral tube wall contacts the inner or outer barrel for heat transfer, it can be transferred to the cooled liquid. Affected by the spiral tube and the thickness of the inner and outer barrel walls, the heat transfer path is not simple and direct, so the refrigeration effect is not ideal. In addition, the spiral tube itself has a certain gap, which determines that the spiral tube cannot fully contact the inner or outer barrel, resulting in poor heat transfer efficiency. After a period of use, the spiral tube may separate from the inner or outer barrel due to its own tension and other factors, resulting in poor refrigeration effect or even no refrigeration. In addition, the polyurethane foam filled as the insulation material can easily squeeze into the spiral tube when foaming and expanding, so that the spiral tube is separated from the inner or outer barrel, which also leads to poor refrigeration effect or no refrigeration. Therefore, the evaporator with spirally wound copper tube has low refrigeration efficiency, poor working reliability, low heat transfer capacity, and the spiral tube is wound densely, resulting in high production costs. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a stainless steel evaporator for a snow melting machine.

[0004] The above-mentioned problem of the present invention is solved by the following technical solutions: A stainless steel evaporator for a snow melter comprises an outer barrel, the interior of the outer barrel is filled with a refrigeration medium, and liquid is poured onto the outer surface of the outer barrel and condensed before being scraped off by a scraper; Also includes, The inner barrel is configured as a cylindrical shell with two ends open and coaxial with the outer barrel, and the first end is connected to the end of the outer barrel, and the second end is provided with a folded edge outward, so that a closed refrigeration chamber is formed between the inner barrel and the outer barrel; The folded edge is provided with a notch, and the refrigeration chamber is provided with a liquid inlet groove connected with the notch, and the refrigeration medium enters the refrigeration chamber through the liquid inlet groove; The liquid inlet pipe extends into the liquid inlet tank through the notch.

[0005] The above technical solution is further configured as follows: a liquid guiding member is provided in the refrigeration chamber, and the liquid inlet groove is located on the liquid guiding member; At least one end of the liquid inlet groove is open and communicates with the notch.

[0006] The above technical solution is further configured as follows: the liquid-conducting member at least comprises a liquid-conducting bottom connected to the outer wall of the inner barrel and liquid-conducting walls formed on both sides of the liquid-conducting bottom, and the liquid inlet groove is located between the liquid-conducting bottom and the liquid-conducting wall; The end of the liquid-conducting wall is folded outwardly to be provided with a flange.

[0007] The above technical solution is further configured as follows: a plurality of liquid outlet holes are distributed on the liquid guiding member and are connected to the liquid inlet groove; The liquid outlet is arranged on the liquid guiding wall.

[0008] The above technical solution is further configured as follows: at least one liquid inlet groove is provided, and the number of notches on the folded edge is consistent with the number of liquid inlet grooves.

[0009] The above technical solution is further configured as follows: the liquid inlet groove is a spiral recessed portion provided on the outer wall of the inner barrel.

[0010] The above technical solution is further configured as follows: the refrigeration chamber is also connected to an exhaust pipe, and the exhaust pipe passes through the wall of the inner barrel.

[0011] The above technical solution is further configured as follows: a heat-insulating space is provided at the center of the inner barrel, and the heat-insulating space is filled with heat-insulating material.

[0012] The above technical solution is further configured as follows: it also includes a mounting bracket, the mounting bracket is provided with a bottom of the outer barrel, and the first end of the inner barrel is connected to the mounting bracket; a mounting ring is axially extended on the mounting bracket, and a mounting groove is formed between the mounting ring and the inner wall of the outer barrel; A sealing ring is arranged in the installation groove, and the first end of the inner barrel is connected to the sealing ring.

[0013] The above technical solution is further configured as follows: a temperature controller is provided on the outer barrel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention changes the original line contact conduction mode to a surface contact conduction mode, which effectively solves the problem of poor contact and low conduction efficiency between the coil and the outer barrel, allowing the refrigerant medium to quickly absorb heat from the outer barrel, thereby accelerating the condensation effect and improving the refrigeration efficiency; 2. Compared with the manufacturing cost of the coil, the inner barrel in the present invention reduces the manufacturing materials and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the installation structure of the liquid-conducting component on the inner barrel.

[0017] Figure 3 Schematic diagram of the cross-sectional structure of the liquid-conducting component in the refrigeration chamber in Example 1.

[0018] Figure 4 for Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0019] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of part B in the middle.

[0020] Figure 6 Schematic diagram of the cross-sectional structure of the liquid-conducting component in the refrigeration chamber in Example 2.

[0021] Figure 7 Schematic diagram of the structure of the liquid inlet tank in Example 3.

[0022] Figure 8 Schematic diagram of the position structure of the liquid outlet in Example 4.

[0023] The attached drawings are marked with: 100, outer barrel; 200, inner barrel; 210, folded edge; 211, notch; 300, mounting bracket; 310, mounting ring; 400, liquid inlet pipe; 500, sealing ring; 600, exhaust pipe; 700, liquid-conducting member; 710, liquid-conducting bottom; 720, liquid-conducting wall; 730, flange; 701, liquid outlet; 800, shaft tube; 900, end cap; 1. Thermostat; a. Refrigeration chamber; b. Liquid inlet tank; c. Liquid gap; d. Insulation space. DETAILED DESCRIPTION

[0024] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0025] like Figure 1-8 As shown, the following embodiment provides a stainless steel evaporator for a snow melt machine.

[0026] Example 1 A stainless steel evaporator of a snow melting machine comprises an outer barrel 100, wherein the interior of the outer barrel 100 is filled with a refrigeration medium, and liquid is poured onto the outer surface of the outer barrel 100 and condensed and then scraped off by a scraper; Also includes, The inner barrel 200 is configured as a cylindrical shell with both ends opened and coaxial with the outer barrel 100, and the first end is connected to the end of the outer barrel 100, and the second end is provided with a folded edge 210 outwardly, so that a closed refrigeration chamber a is formed between the inner barrel 200 and the outer barrel 100; The folded edge 210 is provided with a notch 211, and the refrigeration chamber a is provided with a liquid inlet groove b connected with the notch 211, and the refrigeration medium enters the refrigeration chamber a through the liquid inlet groove b; The liquid inlet pipe 400 extends into the liquid inlet tank b through the notch 211 .

[0027] The above is the basic solution of this embodiment.

[0028] Specific reference Figure 1 As shown, the outer barrel 100 is configured as a shell having an opening at one end and a bottom at the other end, the inner barrel 200 is located in the outer barrel 100 and is coaxially arranged with the outer barrel 100, and the inner barrel 200 can be directly welded to the bottom of the outer barrel 100, or can be sealed and connected to the outer barrel 100 through a connecting component; Reference Figure 2 As shown, the second end of the outer barrel 200 is folded outward to form a folded edge 210, and the outer end of the folded edge 210 is connected to the inner wall of the outer barrel 100, so that a closed refrigeration chamber a is formed between the inner barrel 200 and the outer barrel 100; At the same time, a notch 211 is provided on the folded edge 210, and a liquid inlet groove b is provided in the refrigeration chamber a and communicates with the notch 211 on the folded edge 210; The liquid inlet pipe 400 extends into the liquid inlet tank b through the notch 211; The refrigerant medium is input into the liquid inlet tank b through the liquid inlet pipe 400, and enters the refrigeration chamber a along the liquid inlet tank b; The refrigeration medium acts in the refrigeration chamber a to refrigerate the outer barrel 100 , and the liquid condenses on the surface of the outer barrel 100 and is scraped off by a scraper on the side of the outer barrel 100 .

[0029] In this embodiment, an end cap 900 is provided at the open end of the outer barrel 100 for sealing.

[0030] In this embodiment, the refrigeration medium is a conventional refrigerant.

[0031] In this embodiment, the liquid inlet tube 400 is a capillary tube, and the size of the notch 211 is at least large enough to accommodate the liquid inlet tube 400 extending therein.

[0032] In this embodiment, the scraper structure and the use of the evaporator are consistent with the evaporator in the prior art, and will not be described in detail here.

[0033] In this embodiment, the refrigerant medium is continuously input into the refrigeration chamber a and contacts the inner surface of the outer barrel 100. The contact area is the entire inner surface of the outer barrel 100. Compared with the spiral tube, the contact area of ​​this embodiment is large and the refrigeration effect is good. When the refrigerant medium works in the refrigeration chamber a, it absorbs the heat on the outer barrel 100 and vaporizes to form gas. In order to prevent the gas from filling the refrigeration chamber a and affecting the input of the refrigerant medium, in this embodiment, the refrigeration chamber a is also connected to the exhaust pipe 600, and the formed gas is output to the outside of the refrigeration chamber a through the exhaust pipe 600, so that the refrigeration chamber a can continuously receive the refrigerant medium.

[0034] During use, the refrigerant medium is continuously input into the refrigeration chamber a from the liquid inlet tank b, and the vaporized gas is output from the exhaust pipe 600, forming a cycle, thereby continuously absorbing the heat of the liquid and ensuring the refrigeration effect of the evaporator.

[0035] In this embodiment, a liquid guiding member 700 is provided in the refrigeration chamber a, and the liquid inlet groove b is located on the liquid guiding member 700; At least one end of the liquid inlet groove b is open and communicates with the notch 211 .

[0036] Specific reference Figure 2 and Figure 4 As shown, in this embodiment, the liquid guiding member 700 is arranged in a long strip shape, the liquid inlet groove b is a recessed portion arranged on the surface of the liquid guiding member 700 , and at least one end of the liquid inlet groove b is open and communicated with the notch 211 .

[0037] The refrigerant medium enters the liquid inlet groove b through the notch 211 on the folded edge 210, flows along the liquid inlet groove b, flows out at the notch of the liquid inlet groove b, and enters the refrigeration chamber a; To ensure smooth outflow of the refrigerant medium, in this embodiment, a gap is left between the end of the groove wall of the liquid inlet groove b and the inner wall of the outer barrel 100 .

[0038] In other embodiments, both ends of the liquid inlet groove b may be set as openings, and the refrigerant medium may flow out from the opening at the other end of the liquid inlet groove b and enter the refrigeration chamber a.

[0039] In this embodiment, the liquid guiding member 700 at least includes a liquid guiding bottom 710 connected to the outer wall of the inner barrel 200 and liquid guiding walls 720 formed on both sides of the liquid guiding bottom 710, and the liquid inlet groove b is located between the liquid guiding bottom 710 and the liquid guiding wall 720; The end of the liquid guiding wall 720 is folded outward to form a flange 730 .

[0040] Specific reference Figure 3 As shown, the outer end surface of the liquid-conducting bottom 710 is fixed on the outer wall of the inner barrel 200, and is fixedly connected with the inner barrel 200; A liquid gap c is left between the flange 730 and the inner wall of the outer barrel 100 , and the refrigerant medium can overflow from the liquid gap c into the refrigeration chamber a.

[0041] Preferably, to ensure that the refrigerant can pass through the liquid inlet pipe 400, the liquid inlet tank b and the liquid gap c in sequence, in this embodiment, the opening of the pipe mouth of the liquid inlet pipe 400 is completely located in the liquid inlet tank b.

[0042] In this embodiment, the liquid guiding bottom 710 and the inner barrel 200 are fixed by welding.

[0043] In this embodiment, a flange 730 is provided to form a liquid gap c with a width much smaller than that of the refrigeration chamber a between the flange 730 and the inner wall of the outer barrel 100. When the refrigerant overflows from the liquid inlet groove b, it must enter the liquid gap c, that is, it first directly contacts the inner wall of the outer barrel 100, thereby being able to directly perform a cooling effect on the outer barrel 100.

[0044] In this embodiment, at least one liquid inlet groove b is provided, and the number of the notches 211 on the folded edge 210 is the same as the number of the liquid inlet grooves b.

[0045] In order to increase the input speed of the refrigerant medium, a liquid guiding member 700 may be provided on the surface of the inner barrel 200, thereby providing a plurality of liquid inlet grooves b and matching notches 211 for introducing the refrigerant medium.

[0046] When in use, the cylinder body is usually placed lying down. At this time, the liquid gap c between the flange 730 and the outer barrel 100 is located at the upper and lower ends of the liquid inlet groove b. When the liquid inlet pipe 400 inputs the refrigerant into the liquid inlet groove b, due to the effect of gravity, the refrigerant is output from the liquid gap c below and is evenly distributed along the inner wall of the outer barrel 100, so that it can quickly vaporize and absorb heat from the outer barrel 100, and cool the outer barrel 100 to achieve a rapid cooling effect.

[0047] In this embodiment, the exhaust pipe 600 passes through the wall of the inner barrel 200 and extends from the middle portion of the inner barrel 200 to connect the refrigeration chamber a with the external space.

[0048] In this embodiment, the exhaust pipe 600 extends from the end cover 900 to discharge the gas to the external space.

[0049] In this embodiment, when the refrigerant medium works in the refrigeration chamber a, it will absorb the heat on the wall of the outer barrel 100 and the wall of the inner barrel 200 at the same time, and have a cooling effect on both the outer barrel 100 and the inner barrel 200; therefore, when the air in the center of the inner barrel 200 contacts the wall of the inner barrel 200, pre-cooling and liquefaction will produce water droplets. In this embodiment, a heat-insulating space d is provided in the center of the inner barrel 200, and the heat-insulating space d is filled with heat-insulating material.

[0050] Specific reference Figure 1 As shown, the heat-insulating material is filled into the heat-insulating space d, occupying the space at the center of the inner barrel 200, reducing the contact between the air and the inner barrel 200, thereby avoiding the liquefaction of the air on the surface of the inner barrel 200; In addition, when the heat-insulating material is filled in the center of the inner barrel 200, the surface of the inner barrel 200 cannot dissipate heat, thereby ensuring the cooling effect to the greatest extent.

[0051] In this embodiment, a rotating shaft tube 800 is provided at the center of the inner barrel 200 , the heat preservation space d is located between the rotating shaft tube 800 and the inner barrel 200 , and the end of the rotating shaft tube 800 is connected to the mounting bracket 300 and the end cover 900 .

[0052] In this embodiment, in order to ensure the sealing effect of the refrigeration chamber a, a mounting bracket 300 is further included. The mounting bracket 300 is provided with the bottom of the outer barrel 100, and the first end of the inner barrel 200 is connected to the mounting bracket 300; the mounting bracket 300 is provided with a mounting ring 310 extending along the axial direction, and a mounting groove is formed between the mounting ring 310 and the inner wall of the outer barrel 100; A sealing ring 500 is disposed in the installation groove, and the first end of the inner barrel 200 is connected to the sealing ring 500 .

[0053] Specific reference Figure 2 and Figure 5 As shown, the mounting bracket 300 is located inside the outer tub 100 and is disposed on the bottom. At the same time, the mounting bracket 300 is sealed and connected to the inner wall of the outer tub 100 via a sealing ring 500. The first end of the inner barrel 200 is connected to the mounting bracket 300; An embedding groove is provided on the end surface of the sealing ring 500, and the first end of the inner barrel 200 is inserted into the embedding groove to achieve connection with the sealing ring 500; A portion of the sealing ring 500 located outside the embedding groove enters into the refrigeration chamber a to seal one end of the refrigeration chamber a, and the other end is sealed by the folded edge 210.

[0054] In this embodiment, a temperature controller 1 is provided on the outer barrel 100 .

[0055] Specific reference Figure 1 As shown, the temperature measuring head of the thermostat 1 passes through the bottom of the outer barrel 100 and the mounting bracket 300 to measure and monitor the temperature in the heat preservation space d.

[0056] Example 2 This embodiment is an improvement made on the basis of the embodiment 1, the purpose is to accelerate the input of the refrigerant medium, and the specific implementation method is as follows: The liquid guiding member 700 is provided with a plurality of liquid outlet holes 701 which are connected to the liquid inlet groove b; The liquid outlet 701 is disposed on the liquid guiding wall 720 .

[0057] Preferably, refer to Figure 6 As shown, in this embodiment, the liquid outlet hole 701 is arranged on the groove wall of the liquid inlet groove b, that is, it is opened on the liquid guide wall 720, and the refrigerant medium entering the liquid inlet groove b can be directly output to the refrigeration chamber a from the liquid outlet hole 701 on the liquid guide wall 720.

[0058] Example 3 This embodiment provides a new structure of a liquid inlet groove, and its specific implementation is as follows: the liquid inlet groove b is a spiral recessed portion provided on the outer wall of the inner barrel 200.

[0059] Specific reference Figure 7 As shown, the liquid inlet groove b is spirally recessed on the outer wall of the inner barrel 200, and the liquid inlet pipe 400 is connected to one end of the liquid inlet groove b, and the exhaust pipe 600 is connected to the other end of the liquid inlet groove b.

[0060] The refrigerant medium enters the liquid inlet tank b through the liquid inlet pipe 400 and flows toward the other end along a spiral shape. During the flow, it contacts the inner wall of the outer barrel 100 and absorbs the heat of the outer barrel 100. At the same time, it squeezes the air in the refrigeration chamber a toward the side of the exhaust pipe 600 and discharges the air from the exhaust pipe 600.

[0061] Example 4 This embodiment is an improvement made on the basis of the embodiment 3, the purpose is to accelerate the input of the refrigerant medium, and the specific implementation method is as follows: The liquid guiding member 700 is provided with a plurality of liquid outlet holes 701 which are connected to the liquid inlet groove b; The liquid outlet 701 is disposed on the flange 730 .

[0062] Preferably, refer to Figure 8 As shown, in this embodiment, the liquid outlet 701 is arranged on the flange 730, and the direction is along the circumference of the inner barrel 200, and overflows from the liquid inlet groove to both sides.

[0063] When the refrigerant in the liquid inlet groove b fills the entire liquid inlet groove b, the refrigerant on the inner side of the flange 730 overflows to both sides through the liquid outlet hole 701, thereby accelerating the speed at which the refrigerant enters the refrigeration chamber a; Compared with being arranged on the liquid guide wall 720 , in this embodiment, the liquid outlet hole 701 is located closer to the inner wall of the outer barrel 100 , so that it can contact the outer barrel 100 more quickly and cool the outer barrel 100 .

[0064] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A stainless steel evaporator for a snow melter, comprising an outer barrel (100), wherein the interior of the outer barrel (100) is filled with a refrigeration medium, and liquid is poured onto the outer surface of the outer barrel (100) and condensed before being scraped off by a scraper; Features: Also includes, The inner barrel (200) is configured as a cylindrical shell with two ends open and coaxial with the outer barrel (100), and the first end is connected to the end of the outer barrel (100), and the second end is provided with a folded edge (210) outwardly, so that a closed refrigeration chamber (a) is formed between the inner barrel (200) and the outer barrel (100); The folded edge (210) is provided with a notch (211), and the refrigeration chamber (a) is provided with a liquid inlet groove (b) connected to the notch (211), and the refrigeration medium enters the refrigeration chamber (a) through the liquid inlet groove (b); The liquid inlet pipe (400) extends into the liquid inlet tank (b) through the notch (211).

2. The stainless steel evaporator of the snow melter according to claim 1, characterized in that: A liquid guiding component (700) is arranged in the refrigeration chamber (a), and the liquid inlet groove (b) is located on the liquid guiding component (700); At least one end of the liquid inlet groove (b) is open and connected to the notch (211).

3. The stainless steel evaporator of the snow melter according to claim 2, characterized in that: The liquid-conducting component (700) comprises at least a liquid-conducting bottom (710) connected to the outer wall of the inner barrel (200) and liquid-conducting walls (720) formed on both sides of the liquid-conducting bottom (710), and the liquid inlet groove (b) is located between the liquid-conducting bottom (710) and the liquid-conducting wall (720); The end of the liquid-conducting wall (720) is folded outwardly and provided with a flange (730).

4. The stainless steel evaporator of the snow melter according to claim 3, characterized in that: The liquid guiding member (700) is provided with a plurality of liquid outlet holes (701) which are connected to the liquid inlet groove (b); The liquid outlet hole (701) is arranged on the liquid guiding wall (720).

5. The stainless steel evaporator of the snow melter according to claim 3 or 4, characterized in that: At least one liquid inlet groove (b) is provided, and the number of the notches (211) on the folded edge (210) is the same as the number of the liquid inlet grooves (b).

6. The stainless steel evaporator of the snow melter according to claim 1, characterized in that: The liquid inlet groove (b) is a spiral recessed portion provided on the outer wall of the inner barrel (200).

7. The stainless steel evaporator of the snow melter according to claim 1, characterized in that: The refrigeration chamber (a) is also connected to an exhaust pipe (600), and the exhaust pipe (600) passes through the wall of the inner barrel (200).

8. The stainless steel evaporator of the snow melter according to claim 1, characterized in that: A heat-insulating space (d) is provided at the center of the inner barrel (200), and the heat-insulating space (d) is filled with heat-insulating material.

9. The stainless steel evaporator of the snow melter according to claim 1, characterized in that: It also includes a mounting bracket (300), wherein the mounting bracket (300) is provided with the bottom of the outer barrel (100), and the first end of the inner barrel (200) is connected to the mounting bracket (300); A mounting ring (310) is axially extended on the mounting bracket (300), and a mounting groove is formed between the mounting ring (310) and the inner wall of the outer barrel (100); A sealing ring (500) is arranged in the installation groove, and the first end of the inner barrel (200) is connected to the sealing ring (500).

10. The stainless steel evaporator of the snow melt machine according to claim 8, characterized in that: The outer barrel (100) is provided with a temperature controller (1).

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