A novel external de-icing system combining internal de-icing and external de-icing

Abstract

This utility model relates to the field of energy equipment technology and discloses a novel external ice-melting system combining internal ice melting. It includes an ice storage tank, an ice storage coil assembly inside the ice storage tank, an ethylene glycol supply branch pipe for inputting ethylene glycol solution, and an ethylene glycol return branch pipe for outputting ethylene glycol solution, and an ice-melting plate heat exchanger. The input end of the ice-melting plate heat exchanger is fixedly connected to an ice water supply pipe, which is connected to the ice storage tank. The output end of the ice-melting plate heat exchanger is fixedly connected to an ice water return pipe, which is connected to the ice storage tank via an ice water supply pipe. An ice-melting pump is fixedly connected to the outer wall of the ice water supply pipe. In this utility model, a monitoring device can monitor the real-time ice thickness of each group of ice storage coils and control the participation of each group of ethylene glycol in ice storage or ice melting through control valves. The operating conditions are adjusted in a timely manner according to the ice thickness in the ice storage tank, thereby improving the ice-making efficiency of the chiller unit.

Description

Technical Field

[0001] This utility model relates to the field of energy equipment technology, and in particular to a novel external ice-melting system that combines internal ice melting. Background Technology

[0002] In external ice melting, the warmer-temperature return water from the air conditioning system directly enters the ice storage tank and circulates, causing the ice layer on the outer surface of the coils to gradually melt from the outside in. The storage tank is typically open. To ensure uniform melting, a compressed air agitation pipe is installed at the bottom of the tank. Clean compressed air bubbles increase water flow turbulence, improving heat exchange efficiency. Because the warmer-temperature return water comes into direct contact with the ice, the external ice melting method allows for rapid ice melting and the production of large quantities of low-temperature chilled water in a short time, enabling more flexible operation strategies. It is particularly suitable for applications requiring large cooling capacities and low temperatures for short periods. Generally, external ice melting storage tanks are relatively large. The ice and water flow along the length of the tank. Near the inlet, the ice melts more easily due to the higher water temperature, while near the outlet, the ice melts more slowly due to the lower water temperature. It is highly likely that after the ice melting cycle ends, the thickness of the remaining ice on the ice storage coils in the ice storage tank is inconsistent, which leads to different ice-making starting points for each group of ice storage coils at the beginning of ice storage, and the remaining ice affects the ice-making efficiency of the chiller unit.

[0003] In internal ice melting, the high-temperature refrigerant heated by the air conditioning load circulates within the coil, gradually melting the ice on the outer surface of the coil and cooling the refrigerant to meet user needs. Compared to external ice melting, internal ice melting avoids the adverse effects of residual ice on the outer surface of the coil from the previous cold storage cycle, which can lead to decreased heat transfer efficiency and uneven ice thickness. Furthermore, the internal ice melting system is a closed-loop process, making corrosion prevention and static pressure management simpler and more economical. However, because the heat exchange area is only the coil surface, the melting and cooling rate of internal ice melting is slower than that of external ice melting. Therefore, a novel external ice melting system combining internal and external ice melting is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a novel external ice-melting system that combines internal ice melting, aiming to improve the problem in the prior art where the melting and cooling rate of internal ice melting is slower than that of external ice melting because the heat exchange area is only the surface of the coil.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a novel external de-icing system combining internal de-icing, comprising...

[0006] An ice storage tank is provided with an ice storage coil assembly inside the ice storage coil assembly. The ice storage coil assembly is provided with an ethylene glycol supply branch pipe for inputting ethylene glycol solution and an ethylene glycol return branch pipe for outputting ethylene glycol solution.

[0007] An ice-melting plate heat exchanger is provided, wherein the input end of the ice-melting plate heat exchanger is fixedly connected to an ice water supply pipe, the input end of the ice-melting plate heat exchanger is connected to an ice storage tank through the ice water supply pipe, the output end of the ice-melting plate heat exchanger is fixedly connected to an ice water return pipe, the output end of the ice-melting plate heat exchanger is connected to an ice storage tank through the ice water supply pipe, and an ice-melting pump is fixedly connected to the outer wall of the ice water supply pipe.

[0008] A dual-mode chiller unit, wherein an ethylene glycol supply pipe is fixedly connected to the output end of the dual-mode chiller unit, an ethylene glycol pump is fixedly connected to the outer wall of the ethylene glycol supply pipe, a switching valve 1 is installed on the outer wall of the ethylene glycol supply pipe, the input end of the ethylene glycol supply branch pipe is fixedly connected to the output end of the switching valve 1, one end of the ethylene glycol supply pipe is fixedly connected to an ice storage ethylene glycol supply branch pipe, and an ethylene glycol return pipe is fixedly connected to the input end of the dual-mode chiller unit. The output end of the pipe is connected to the ethylene glycol return pipe. The output end of the ethylene glycol return branch pipe is fixedly connected to an ice-storing ethylene glycol return branch pipe. The other end of the ice-storing ethylene glycol return branch pipe is fixedly connected to the input end of the ethylene glycol return pipe. A direct-supply plate-type ethylene glycol supply pipe is fixedly connected to the outer wall of the ethylene glycol supply pipe. A direct-supply plate-type ethylene glycol return pipe is fixedly connected to the outer wall of the ethylene glycol return pipe. An internal melting ice ethylene glycol supply pipe is fixedly connected to the outer wall of the direct-supply plate-type ethylene glycol supply pipe.

[0009] As a further description of the above technical solution:

[0010] An internal melting ice ethylene glycol supply pipe is fixedly connected to the outer wall of an internal melting ice ethylene glycol pump. One end of the internal melting ice ethylene glycol supply pipe is fixedly connected to an internal melting ice ethylene glycol supply branch pipe. The internal melting ice ethylene glycol supply branch pipe is connected to the ice storage ethylene glycol supply branch pipe. An internal melting ice ethylene glycol return pipe is fixedly connected to the outer wall of the direct supply plate heat exchanger ethylene glycol return pipe. An ice ethylene glycol return branch pipe is fixedly connected to the outer wall of the internal melting ice ethylene glycol return pipe. The ice ethylene glycol return branch pipe is connected to the ice storage ethylene glycol return branch pipe. The internal melting ice ethylene glycol supply pipe and the internal melting ice ethylene glycol return pipe are respectively connected to the ice storage coil assembly through the internal melting ice ethylene glycol supply branch pipe and the ice ethylene glycol return branch pipe.

[0011] As a further description of the above technical solution:

[0012] The direct-supply plate heat exchanger is connected to the dual-condition chiller unit via a direct-supply plate heat exchanger ethylene glycol supply pipe and a direct-supply plate heat exchanger ethylene glycol return pipe.

[0013] As a further description of the above technical solution:

[0014] An air pump is provided, with an air intake pipe fixedly connected to its input end and an air delivery pipe fixedly connected to its output end. The air delivery pipe and the air intake pipe are connected to an ice storage tank.

[0015] As a further description of the above technical solution:

[0016] A switching valve 2 is provided between the ethylene glycol supply pipe and the direct-supply plate-mounted ethylene glycol supply pipe; a switching valve 3 is provided between the ethylene glycol return pipe and the ice-storage ethylene glycol return branch pipe; and a switching valve 4 is provided between the ethylene glycol return pipe and the direct-supply plate-mounted ethylene glycol return pipe.

[0017] As a further description of the above technical solution:

[0018] A switching valve 5 is provided between the internal melt ice ethylene glycol supply pipe and the internal melt ice ethylene glycol supply branch pipe; a switching valve 6 is provided between the ice storage ethylene glycol supply branch pipe and the ice storage ethylene glycol supply branch pipe; a switching valve 7 is provided between the internal melt ice ethylene glycol return pipe and the ice ethylene glycol return branch pipe; and a switching valve 8 is provided between the ice ethylene glycol return branch pipe and the ice storage ethylene glycol return branch pipe.

[0019] As a further description of the above technical solution:

[0020] The system includes a monitoring device and an ice thickness sensor. The monitoring device serves as the monitoring platform for the entire system, and the ice thickness sensor is installed inside the ice storage coil assembly. The monitoring device and the ice thickness sensor are electrically connected.

[0021] This utility model has the following beneficial effects:

[0022] This utility model provides a novel external ice-melting system that combines internal and external ice melting. It features a reasonable structural design, wide application range, convenient operation, full energy utilization, environmental friendliness, and ease of promotion. The monitoring device can monitor the real-time ice thickness of each group of ice storage coils and control the participation of each group of ethylene glycol in ice storage (or ice melting) through control valves. The system adjusts operating conditions promptly based on the ice thickness in the ice storage tank, improving the ice-making efficiency of the chiller unit and saving energy. It has significant economic and social value and is easy to promote and apply. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a novel external de-icing system combining internal de-icing and external de-icing provided by this utility model;

[0024] Figure 2 A schematic diagram of the actual operation of a novel external ice-melting system combining internal ice melting, provided by this utility model;

[0025] Figure 3 A schematic diagram of the actual operation of a novel external de-icing system combining internal de-icing and external de-icing, provided for this utility model;

[0026] Figure 4A schematic diagram of the actual operation of a novel external de-icing system combining internal de-icing and external de-icing, provided by this utility model.

[0027] Legend:

[0028] 1. Ice storage tank; 11. Ice storage coil assembly; 111. Ethylene glycol supply branch pipe; 112. Ethylene glycol return branch pipe; 2. Ice melting plate heat exchanger; 21. Chilled water supply pipe; 22. Chilled water return pipe; 3. Dual-condition chiller unit; 31. Ethylene glycol supply pipe; 32. Ethylene glycol return pipe; 33. Direct supply plate heat exchanger ethylene glycol supply pipe; 34. Direct supply plate heat exchanger ethylene glycol return pipe; 35. Internal ice melting ethylene glycol supply pipe; 36. Internal ice melting ethylene glycol return pipe; 311. Ice storage ethylene glycol supply branch pipe; 321. 351. Ice-melting ethylene glycol return branch pipe; 361. Ice-melting ethylene glycol supply branch pipe; 4. Direct supply plate heat exchanger; 5. Air pump; 51. Suction pipe; 52. Air supply pipe; 6. Ice-melting pump; 7. Ethylene glycol pump; 7a. Switching valve 1; 7b. Switching valve 2; 7c. Switching valve 3; 7d. Switching valve 4; 8. Internal ice-melting ethylene glycol pump; 8a. Switching valve 5; 8b. Switching valve 6; 8c. Switching valve 7; 8d. Switching valve 8; 9. Monitoring device; 91. Ice thickness sensor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1-3 The present invention provides an embodiment of a novel external ice-melting system that combines internal ice melting, comprising an ice storage tank 1, an ice storage coil assembly 11 disposed inside the ice storage tank 1, an ethylene glycol supply branch pipe 111 for inputting ethylene glycol solution and an ethylene glycol return branch pipe 112 for outputting ethylene glycol solution.

[0031] Ice-melting plate heat exchanger 2 has an input end fixedly connected to an ice water supply pipe 21, which is connected to an ice storage tank 1. An output end of the ice-melting plate heat exchanger 2 is fixedly connected to an ice water return pipe 22, which is also connected to the ice storage tank 1 via the ice water supply pipe 21. An ice-melting pump 6 is fixedly connected to the outer wall of the ice water supply pipe 21. A dual-condition chiller unit 3 has an output end fixedly connected to an ethylene glycol supply pipe 31, which is fixedly connected to the outer wall of the ethylene glycol supply pipe 31. A switching valve 17a is installed on the outer wall of the ethylene glycol supply pipe 31. The input end of an ethylene glycol supply branch pipe 111 is fixedly connected to the output end of the switching valve 17a. One end of the ethylene glycol supply pipe 31 is fixedly connected to an ice storage ethylene glycol supply branch pipe. Pipe 311, the input end of the dual-condition chiller unit 3 is fixedly connected to an ethylene glycol return pipe 32, the output end of an ethylene glycol return branch pipe 112 is connected to an ethylene glycol return pipe 32, the output end of an ice storage ethylene glycol return branch pipe 112 is fixedly connected to an ice storage ethylene glycol return branch pipe 321, the other end of an ice storage ethylene glycol return branch pipe 321 is fixedly connected to the input end of an ethylene glycol return pipe 32, the outer wall of an ethylene glycol supply pipe 31 is fixedly connected to a direct supply plate-type ethylene glycol supply pipe 33, the outer wall of an ethylene glycol return pipe 32 is fixedly connected to a direct supply plate-type ethylene glycol return pipe 34, the outer wall of an direct supply plate-type ethylene glycol supply pipe 33 is fixedly connected to an internal melting ice ethylene glycol supply pipe 35, the outer wall of an internal melting ice ethylene glycol supply pipe 35 is fixedly connected to an internal melting ice ethylene glycol pump 8, and the internal melting ice ethylene glycol supply pipe 35 is fixedly connected to an internal melting ice ethylene glycol supply pipe 35. One end is fixedly connected to an internal melting ice ethylene glycol supply branch pipe 351, which is connected to an ice storage ethylene glycol supply branch pipe 311. An internal melting ice ethylene glycol return pipe 36 is fixedly connected to the outer wall of a direct-supply plate heat exchanger ethylene glycol return pipe 34. An ice ethylene glycol return branch pipe 361 is fixedly connected to the outer wall of the internal melting ice ethylene glycol return pipe 36, which is connected to an ice storage ethylene glycol return branch pipe 321. Internal melting ice ethylene glycol supply pipes 35 and 36 are respectively connected to the ice storage coil assembly 11 via internal melting ice ethylene glycol supply branch pipes 351 and ice ethylene glycol return branch pipes 361. A direct-supply plate heat exchanger 4 is connected to the direct-supply plate heat exchanger ethylene glycol supply pipe 33 and direct-supply plate heat exchanger ethylene glycol return pipe 34. The dual-condition chiller unit is connected in three phases. An air pump 5 is connected to an air intake pipe 51, and an air supply pipe 52 is connected to its output. The air supply pipe 52 and the air intake pipe 51 are connected to the ice storage tank 1. A switching valve 27b is installed between the ethylene glycol supply pipe 31 and the direct-supply plate heat exchanger ethylene glycol supply pipe 33. A switching valve 37c is installed between the ethylene glycol return pipe 32 and the ice storage ethylene glycol return branch pipe 321. A switching valve 47d is installed between the ethylene glycol return pipe 32 and the direct-supply plate heat exchanger ethylene glycol return pipe 34. A switching valve 58a is installed between the internal melting ice ethylene glycol supply pipe 35 and the internal melting ice ethylene glycol supply branch pipe 351. A switching valve 68b is installed between the ice storage ethylene glycol supply branch pipe 311 and the ice storage ethylene glycol supply branch pipe 311.A switching valve 78c is installed between the ice-melting ethylene glycol return pipe 36 and the ice-melting ethylene glycol return branch pipe 361, and a switching valve 88d is installed between the ice-melting ethylene glycol return branch pipe 361 and the ice-storing ethylene glycol return branch pipe 321. A monitoring device 9 and an ice thickness sensor 91 are also included. The monitoring device 9 serves as the monitoring platform for the entire system, and the ice thickness sensor 91 is installed inside the ice-storing coil group 11. The monitoring device 9 and the ice thickness sensor 91 are electrically connected.

[0032] Specifically, the ice-melting pump 6 draws chilled water from the ice storage tank 1 through the ice-melting main pipe 3. An air vent valve is installed on the ice-melting main pipe 3. During ice melting, the air pump 5 is activated to prevent air from entering the water pump and causing cavitation. The dual-condition chiller unit 3 is connected to the ice storage coil group 11 through the ethylene glycol supply pipe 31. The ethylene glycol supply pipe 31 branches into many ice storage ethylene glycol supply branches 311, which enter the ice storage coil group 11 for ice storage. The ethylene glycol solution is then returned to the dual-condition chiller unit 3 through the ethylene glycol return pipe 32. An ethylene glycol pump 7 is installed on the ethylene glycol supply pipe 31. Switching valves 17a and 68b are used, and switching valves 37c and 88d are installed on the glycol return pipe 32. The dual-mode chiller unit 3 and the direct-supply plate heat exchanger 4 control the operating conditions of the system through the switching of multiple switching valves. When switching valves 17a, 37c, 68b, and 78d are open, and switching valves 27b, 47d, 58a, and 78c are closed, it is in ice storage mode. The internal melting mode is the opposite. The direct-supply plate heat exchanger 4 is connected to the ice storage coil group 11 through the internal melting glycol supply pipe 35. The liquid pipe 35 is divided into many internal melting ethylene glycol supply branches 351, which enter the ice storage coil group 11 for internal melting. The ethylene glycol solution is recovered to the direct supply plate heat exchanger 4 through the internal melting ethylene glycol return pipe 36. The internal melting ethylene glycol supply pipe 35 is equipped with an internal melting ethylene glycol pump 8, a switching valve 27b, and a switching valve 58a. The internal melting ethylene glycol return pipe 36 is equipped with a switching valve 47d and a switching valve 78c. The ice melting plate heat exchanger 2 enters the ice storage tank 1 through the ice water supply pipe 21 for external melting. The water is transported back to the ice storage tank 1 through the ice water return pipe 22 to complete the external melting. An ice-melting pump 6 is installed on the ice water supply pipe 21. An air pump 5 sends air into the ice storage tank 1 through the air supply pipe 52, inputting air into the ice water to mix the water temperature and maintain the ice water outlet temperature. Excess air above the ice storage tank 1 is sucked out through the air suction pipe 51. The monitoring device 9 serves as the monitoring platform for the entire system, monitoring the real-time ice thickness of each group of ice storage coils. The control valve controls each group of ethylene glycol to participate in ice storage or internal ice melting. Priority is given to ice storage coil group 11 with no remaining ice or small remaining ice thickness to participate in ice storage, while ice storage coil group 11 with large remaining ice thickness participates in internal ice melting.

[0033] Working principle: During operation, the external ice storage tank 1 is relatively large. The ice water in the tank flows along the length of the tank. Near the inlet of the ice tank, the ice melts more easily due to the higher water temperature, while near the outlet of the ice tank, the ice melts more difficultly due to the lower water temperature. After the ice melting cycle is completed, the thickness of the remaining ice on the ice storage coils in the ice storage tank 1 may be inconsistent, resulting in different ice-making starting points for each group of ice storage coils at the beginning of ice storage. The remaining ice affects the ice-making efficiency of the chiller unit. By setting up ice thickness sensor 91, each group corresponds to a glycol control valve. The glycol supply and return pipes are set up with two branches, one for ice storage and the other for internal ice melting. All ice storage coils are connected to both branches to monitor the real-time ice thickness of each group of ice storage coils. By controlling the valves, each group of glycol participates in ice storage (or internal ice melting). Ice storage coil group 11 with no remaining ice or small remaining ice thickness participates in ice storage first, while ice storage coil group 11 with large remaining ice thickness participates in internal ice melting.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel outer de-icing system combined with inner de-icing, characterized in that: include An ice storage tank (1) is provided inside the ice storage tank (1). The ice storage coil group (11) is provided inside the ice storage coil group (11) with an ethylene glycol supply branch pipe (111) for inputting ethylene glycol solution and an ethylene glycol return branch pipe (112) for outputting ethylene glycol solution. Ice melting plate heat exchanger (2), the input end of the ice melting plate heat exchanger (2) is fixedly connected to an ice water supply pipe (21), the input end of the ice melting plate heat exchanger (2) is connected to an ice storage tank (1) through the ice water supply pipe (21), the output end of the ice melting plate heat exchanger (2) is fixedly connected to an ice water return pipe (22), the output end of the ice melting plate heat exchanger (2) is connected to an ice storage tank (1) through the ice water supply pipe (21), and an ice melting pump (6) is fixedly connected to the outer wall of the ice water supply pipe (21). A dual-condition chiller unit (3) is provided with an ethylene glycol supply pipe (31) fixedly connected to its output end. An ethylene glycol pump (7) is fixedly connected to the outer wall of the ethylene glycol supply pipe (31). A switching valve 1 (7a) is provided on the outer wall of the ethylene glycol supply pipe (31). The input end of the ethylene glycol supply branch pipe (111) is fixedly connected to the output end of the switching valve 1 (7a). An ice storage ethylene glycol supply branch pipe (311) is fixedly connected to one end of the ethylene glycol supply pipe (311). An ethylene glycol return pipe (32) is fixedly connected to the input end of the dual-condition chiller unit (3). (112) The output end is connected to the ethylene glycol return pipe (32). The output end of the ethylene glycol return pipe (112) is fixedly connected to the ice storage ethylene glycol return pipe (321). The other end of the ice storage ethylene glycol return pipe (321) is fixedly connected to the input end of the ethylene glycol return pipe (32). The outer wall of the ethylene glycol supply pipe (31) is fixedly connected to the direct supply plate-type ethylene glycol supply pipe (33). The outer wall of the ethylene glycol return pipe (32) is fixedly connected to the direct supply plate-type ethylene glycol return pipe (34). The outer wall of the direct supply plate-type ethylene glycol supply pipe (33) is fixedly connected to the internal melting ice ethylene glycol supply pipe (35).

2. A novel outer ice-melting system combined with inner ice-melting according to claim 1, characterized in that: An internal melting ice glycol supply pipe (35) is fixedly connected to an internal melting ice glycol pump (8) on its outer wall. An internal melting ice glycol supply branch pipe (351) is fixedly connected to one end of the internal melting ice glycol supply pipe (35). The internal melting ice glycol supply branch pipe (351) is connected to the ice storage glycol supply branch pipe (311). An internal melting ice glycol return pipe (36) is fixedly connected to the outer wall of the direct supply plate exchange glycol return pipe (34). The outer wall of the internal melting ice ethylene glycol return pipe (36) is fixedly connected to an ice ethylene glycol return branch pipe (361). The ice ethylene glycol return branch pipe (361) is connected to the ice storage ethylene glycol return branch pipe (321). The internal melting ice ethylene glycol supply pipe (35) and the internal melting ice ethylene glycol return pipe (36) are respectively connected to the ice storage coil group (11) through the internal melting ice ethylene glycol supply branch pipe (351) and the ice ethylene glycol return branch pipe (361).

3. A novel outer ice-melting system combined with inner ice-melting according to claim 2, characterized in that: The direct-supply plate heat exchanger (4) is connected to the dual-condition chiller unit (3) through the direct-supply plate heat exchanger ethylene glycol supply pipe (33) and the direct-supply plate heat exchanger ethylene glycol return pipe (34).

4. A novel outer ice-melting system combined with inner ice-melting according to claim 3, characterized in that: An air pump (5) is fixedly connected to an air intake pipe (51) at its input end and to an air delivery pipe (52) at its output end. The air delivery pipe (52) and the air intake pipe (51) are connected to an ice storage tank (1).

5. A novel outer ice-melting system combined with inner ice-melting according to claim 4, characterized in that: A switching valve 2 (7b) is provided between the ethylene glycol supply pipe (31) and the direct-supply plate heat exchanger ethylene glycol supply pipe (33), a switching valve 3 (7c) is provided between the ethylene glycol return pipe (32) and the ice storage ethylene glycol return branch pipe (321), and a switching valve 4 (7d) is provided between the ethylene glycol return pipe (32) and the direct-supply plate heat exchanger ethylene glycol return pipe (34).

6. A novel outer ice-melting system combined with inner ice-melting according to claim 5, characterized in that: A switching valve 5 (8a) is provided between the internal melting ice ethylene glycol supply pipe (35) and the internal melting ice ethylene glycol supply branch pipe (351), a switching valve 6 (8b) is provided between the ice storage ethylene glycol supply branch pipe (311) and the ice storage ethylene glycol supply branch pipe (311), a switching valve 7 (8c) is provided between the internal melting ice ethylene glycol return pipe (36) and the ice ethylene glycol return branch pipe (361), and a switching valve 8 (8d) is provided between the ice ethylene glycol return branch pipe (361) and the ice storage ethylene glycol return branch pipe (321).

7. A novel outer ice-melting system combined with inner ice-melting according to claim 1, characterized in that: The monitoring device (9) and the ice thickness sensor (91) are provided. The monitoring device (9) serves as the monitoring platform for the entire system. The ice thickness sensor (91) is installed inside the ice storage coil group (11). The monitoring device (9) and the ice thickness sensor (91) are electrically connected.

Images