Fluorine water heat exchange device of air energy equipment

Abstract

The utility model provides a fluorine water heat exchange device of air energy equipment. A fluorine water heat exchange device of air energy equipment comprises a heat exchange water tank and at least one set of shell pipes. At least one group of shell tubes are arranged in the heat exchange water tank; each group of shell pipes comprises a shell and at least one water pipe; the upper and lower pipe openings of each water pipe penetrate through the shell and extend into the heat exchange water tank; when no less than two water pipes are arranged in each shell, lower pipe openings of the water pipes on each group of shell pipes are converged into a pipeline to be connected with a water inlet pipe, and a pipe inlet of the water inlet pipe penetrates through the heat exchange water tank and extends to the outside of the heat exchange water tank. The fluorine water heat exchange device of the air energy equipment solves the problems that an existing heat exchanger is low in heat exchange efficiency, the heat exchanger needs to be used in cooperation with a buffer water tank in a water system, then material cost is increased, and installation personnel need to assemble the equipment on site, so that installation cost is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, in particular to a fluorine-water heat exchange device for air energy equipment. Background Art

[0002] In the current process of promoting energy conservation and emission reduction and replacing coal with electricity in rural areas, air source heat pump units have been widely used. Air source heat pumps are mainly used for heating methods of water systems, such as floor heating, radiators, fan coils, etc. At present, the heat exchange devices used inside air source heat pump units are generally shell and tube, high-efficiency tank, plate heat exchanger, etc. Among them, the disadvantages of shell and tube heat exchanger are low heat exchange efficiency and large water pipe resistance, and a high-power circulation pump must be selected, which increases the system power consumption and the overall energy efficiency of the system is low; the disadvantage of plate heat exchanger is that when the equipment has insufficient water flow or insufficient heat in the buffer water tank during defrosting or refrigeration, the water side cavity inside the plate heat exchanger is prone to ice and expansion, causing deformation of the plate heat exchanger, and the fluorine side cavity becomes smaller, resulting in high-pressure failure of the equipment; the disadvantage of high-efficiency tank heat exchanger is that the heat exchange efficiency is lower than that of plate heat exchanger, and the compressor oil is easily deposited in the high-efficiency tank, reducing the heat exchange efficiency; the above three types of heat exchangers all need to add a buffer water tank outside the unit to store heat to provide heat for the unit when defrosting. The existing heat exchange method plus an external buffer water tank has high material costs, and requires on-site assembly by installers, which increases the installation cost.

[0003] In summary, existing heat exchangers have the disadvantages of low heat exchange efficiency, needing to be used with a buffer water tank in the water system, thereby increasing the material cost, and requiring installers to assemble the equipment on site, thereby increasing the installation cost. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an air energy equipment fluorine water heat exchange device to solve the problems of low heat exchange efficiency of existing heat exchangers, and the need for heat exchangers to be used with a buffer water tank in the water system, thereby increasing the material cost, and the need for installers to assemble the equipment on site, thereby increasing the installation cost.

[0005] According to a first aspect of the utility model, there is provided a fluorine water heat exchange device for air energy equipment, comprising: a water exchange water tank and at least one set of shells and tubes;

[0006] At least one set of shell and tube is arranged inside the water exchange water tank;

[0007] Each set of shell and tubes includes a shell and at least one water tube;

[0008] At least one water pipe is provided inside each shell, and the upper and lower pipe openings of each water pipe pass through the shell and extend to the inside of the water exchange water tank;

[0009] When a water pipe is provided inside each shell, the lower pipe opening of the water pipe on each group of shell tubes is connected to the water inlet pipe, and the upper pipe opening of the water pipe on each group of shell tubes is connected to the first water outlet pipe;

[0010] When no less than two water pipes are provided inside each shell, the lower pipe openings of the water pipes on each group of shell tubes converge into a pipe connected to the water inlet pipe, and the upper pipe openings of the water pipes on each group of shell tubes converge into a pipe connected to the first water outlet pipe;

[0011] The inlet of the water inlet pipe passes through the hot water exchange tank and extends to the outside of the hot water exchange tank;

[0012] The upper and lower parts of the shells on each group of shells and tubes are provided with openings, and the shells on each group of shells and tubes are connected to the refrigerant inlet pipe through the upper opening, and the inlet of the refrigerant inlet pipe passes through the upper side of the water exchange tank and extends to the outside of the water exchange tank. The shells on each group of shells and tubes are connected to the refrigerant outlet pipe through the lower opening, and the outlet of the refrigerant outlet pipe passes through the lower side of the water exchange tank and extends to the outside of the water exchange tank.

[0013] A second water outlet pipe is inserted on the upper side of the water exchange tank away from the side of the refrigerant inlet pipe.

[0014] Optionally, the water pipe in each shell is spirally wound around the interior of the shell.

[0015] Optionally, a hollow tube with sealed upper and lower pipe openings is provided in the middle of each shell, and each water pipe in each shell is surrounded by the hollow tube.

[0016] Optionally, the cross-sections of the shell and the hollow tube are both circular.

[0017] Optionally, the height of the hollow tube is the same as the height of the housing.

[0018] Optionally, when the number of shells and tubes is not less than two, the shells and tubes are distributed in parallel and connected in the same way.

[0019] Optionally, a plurality of fins are provided on the outer side wall of the shell of each group of shell tubes.

[0020] Optionally, a sewage outlet is provided at the bottom of the water exchange tank.

[0021] Optionally, an electric heating wire port is provided on the lower side of the water exchange water tank.

[0022] The utility model provides an air energy equipment fluorine water heat exchange device, thereby achieving the following technical effects:

[0023] 1. The fluorine-water heat exchange device of the air energy equipment of the present application has one more heat exchange process than the ordinary shell and tube heat exchanger, which increases the heat exchange efficiency;

[0024] 2. The fluorine water heat exchange device of the air energy equipment of the present application uses a water exchange tank as a container, and the internal water can store enough heat to meet the defrosting needs of the unit;

[0025] 3. The fluorine-water heat exchange device of the air energy equipment of the present application replaces the external buffer water tank, reduces the installation links, and reduces the system procurement cost;

[0026] 4. When the water pump fails and there is no water flow during the refrigeration or defrosting process of the heat pump system, the outer wall of the shell and tube can still complete the heat exchange and take away the cold, so as not to freeze the heat exchange device. In this state, the unit has a better fault tolerance rate and reduces maintenance costs.

[0027] Therefore, the utility model solves the defects of low heat exchange efficiency of existing heat exchangers, the need for heat exchangers to be used with buffer water tanks in water systems, which increases material costs, and the need for installers to assemble equipment on site, which increases installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a fluorine-water heat exchange device for air energy equipment provided by the utility model;

[0029] Figure 2 This is a structural schematic diagram of a hollow tube installed in the middle of a shell tube of a fluorine-water heat exchange device for air energy equipment provided by the utility model;

[0030] Figure 3 The utility model is a cross-sectional view of a shell and tube of a fluorine-water heat exchange device for air energy equipment.

[0031] List of reference numerals:

[0032] 1. Heat exchange water tank; 2. Shell and tube; 2-1. Shell; 2-2. Water pipe; 3. Refrigerant inlet pipe; 4. Refrigerant outlet pipe; 5. Water inlet pipe; 6. First water outlet pipe; 7. Second water outlet pipe; 8. Hollow tube; 9. Fin; 10. Drain outlet; 11. Electric heating wire outlet. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference Figures 1 to 3 The utility model provides a fluorine-water heat exchange device for air energy equipment, which can solve the defects of low heat exchange efficiency of existing heat exchangers, the need for heat exchangers to be used with buffer water tanks in water systems, thereby increasing material costs, and the need for installers to assemble the equipment on site, thereby increasing installation costs.

[0037] The utility model provides an air energy equipment fluorine water heat exchange device, comprising: a water exchange water tank 1 and at least one group of shell tubes 2;

[0038] At least one set of shell and tubes 2 is arranged inside the water exchange tank 1;

[0039] Each set of shell and tube 2 includes a shell 2-1 and at least one water pipe 2-2;

[0040] At least one water pipe 2-2 is provided inside each shell 2-1, and the upper and lower pipe openings of each water pipe 2-2 pass through the shell 2-1 and extend to the inside of the hot water exchange tank 1;

[0041] When a water pipe 2-2 is provided inside each shell 2-1, the lower pipe opening of the water pipe 2-2 on each group of shell tubes 2 is connected to the water inlet pipe 5, and the upper pipe opening of the water pipe 2-2 on each group of shell tubes 2 is connected to the first water outlet pipe 6;

[0042] When no less than two water pipes 2-2 are provided inside each shell 2-1, the lower pipe openings of the water pipes 2-2 on each group of shell tubes 2 converge into a pipe connected to the water inlet pipe 5, and the upper pipe openings of the water pipes 2-2 on each group of shell tubes 2 converge into a pipe connected to the first water outlet pipe 6;

[0043] The inlet of the water inlet pipe 5 passes through the hot water exchange tank 1 and extends to the outside of the hot water exchange tank 1;

[0044] The upper and lower parts of the shell 2-1 on each group of shells and tubes 2 are provided with openings, and the shell 2-1 on each group of shells and tubes 2 is connected to the refrigerant inlet pipe 3 through the upper opening, and the inlet of the refrigerant inlet pipe 3 passes through the upper side of the water exchange tank 1 and extends to the outside of the water exchange tank 1. The shell 2-1 on each group of shells and tubes 2 is connected to the refrigerant outlet pipe 4 through the lower opening, and the outlet of the refrigerant outlet pipe 4 passes through the lower side of the water exchange tank 1 and extends to the outside of the water exchange tank 1;

[0045] A second water outlet pipe 7 is inserted into the upper side of the water exchange tank 1 away from the refrigerant inlet pipe 3 .

[0046] Among them, the number of shells and tubes 2 in the heat exchange device in the present application can be increased or decreased according to the power and energy efficiency requirements of the air source heat pump, and the length and number of each group of shells and tubes 2 can be increased or decreased according to the power and design energy efficiency of the unit; the inlet of the refrigerant inlet pipe 3 is connected to the exhaust pipe of the air source heat pump compressor, and the exhaust pipe of the air source heat pump compressor is set to enable the compressor to transport the gaseous high-temperature refrigerant from top to bottom through the refrigerant inlet pipe 3 to the shell 2-1 on each group of shells and tubes 2; the outlet of the refrigerant outlet pipe 5 is connected to the throttling device of the unit; the inlet of the water inlet pipe 6 and the second water outlet pipe 8 are both connected to the indoor terminal pipeline system.

[0047] In addition, when no less than two water pipes 2-2 are provided inside each shell 2-1, the water pipes 2-2 are arranged inside the shell 2-1 in sequence from top to bottom.

[0048] Reference Figures 1 to 3 Optionally, the water pipe 2-2 in each shell 2-1 is spirally wrapped around the interior of the shell 2-1.

[0049] The water pipes 2-2 are all spirally wound around the interior of the shell 2-1 to increase the heat exchange area and improve the heat exchange efficiency.

[0050] Reference Figures 2 to 3 Optionally, a hollow tube 8 with upper and lower openings blocked is provided in the middle of each shell 2 - 1 , and each water pipe 2 - 2 in each shell 2 - 1 surrounds the hollow tube 8 .

[0051] The hollow tube 8 is provided to increase the heat exchange area outside the shell 2 - 1 and the heat exchange area of ​​the hollow part of the hollow tube 8 , thereby improving the heat exchange efficiency.

[0052] Reference Figure 2 Optionally, the cross-sections of the shell 2-1 and the hollow tube 8 are both circular.

[0053] Among them, the cross-sections of the shell 2-1 and the hollow tube 8 are both circular, which can increase the heat exchange area and improve the heat exchange efficiency. The cross-sections of the shell 2-1 and the hollow tube 8 can also be other shapes, such as rectangular and square, etc., which can achieve the effect of increasing the heat exchange area and improving the heat exchange efficiency.

[0054] Reference Figure 2 , Optionally, the height of the hollow tube 8 is the same as the height of the shell 2 - 1 .

[0055] Among them, the limitation that the height of the hollow tube 8 is the same as the height of the shell 2-1 can increase the heat exchange area and improve the heat exchange efficiency. When each shell 2-1 is provided with no less than two water pipes 2-2, the hollow tube 8 passes through the middle of the spiral water pipe 2-2 from top to bottom in sequence, and there is a distance between the hollow tube 8 and the water pipe 2-2.

[0056] Optionally, when the number of shell tubes 2 is not less than two, the shell tubes 2 are distributed in parallel and connected in the same way.

[0057] Among them, the parallel distribution of multiple groups of shells and tubes 2 reduces the water flow resistance and reduces the power of the water-side circulation pump of the heat pump system.

[0058] Reference Figure 3 Optionally, a plurality of fins 9 are provided on the outer side wall of the shell 2 - 1 of each group of shell tubes 2 .

[0059] Among them, the shell 2-1 of each group of shells and tubes 2 can change its shape and add multiple fin structures according to the actual heat exchange requirements to increase the heat exchange efficiency. Multiple fins 9 are evenly distributed on the outer wall of the shell 2-11, and the structural form of the fins 9 can be straight fins, louver fins, serrated fins, porous fins and corrugated fins.

[0060] Reference Figure 1 Optionally, a sewage outlet 10 is provided at the bottom of the water exchange tank 1 .

[0061] The drain outlet 10 is used to discharge impurities that have sunk to the bottom of the water exchange tank 1 .

[0062] Reference Figure 1 Optionally, an electric heating wire port 11 is provided on the lower side of the water exchange tank 1 .

[0063] Among them, the setting of the electric heating wire port 11 can meet the design requirements of multi-energy coupling.

[0064] Working principle: (taking as an example at least two groups of shells and tubes 2 and one water pipe 2-2 in each shell 2-1)

[0065] After the air source heat pump system is installed and filled with water, when it is running for heating in winter, the air source heat pump compressor transports the gaseous high-temperature refrigerant from top to bottom through the refrigerant inlet pipe 3 to the shell 2-1 of each group of shell tubes 2, and the indoor circulating water flows from bottom to top in the water pipe 2-2 in the shell 2-1. At this time, the high-temperature refrigerant and the low-temperature water complete a heat exchange on the pipe wall of the water pipe 2-1. When the water in the water pipe 2-2 flows into the heat exchange water tank 1 through the first water outlet pipe 6, it flows from bottom to top again to the second water outlet pipe 7 and enters the indoor terminal pipeline system. In this process, the water and the high-temperature refrigerant complete another heat exchange on the outer wall of each group of shell tubes 2.

[0066] It should be noted that not all steps and modules in the above-mentioned processes and system structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above-mentioned embodiments can be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or some components in multiple independent devices may be implemented together.

[0067] In the above embodiments, the hardware module can be implemented mechanically or electrically. The above text shows and describes the present invention in detail through the accompanying drawings and preferred embodiments, but the present invention is not limited to these disclosed embodiments. Based on the above embodiments, those skilled in the art can know that the code review methods in the above different embodiments can be combined to obtain more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

1. A fluorine-water heat exchange device for air energy equipment, characterized in that: include: A heat exchange water tank (1) and at least one set of shell and tube (2); At least one group of shell tubes (2) is arranged inside the water exchange tank (1); Each group of shell and tube (2) comprises a shell (2-1) and at least one water pipe (2-2); At least one water pipe (2-2) is provided inside each of the shells (2-1), and the upper and lower pipe openings of each of the water pipes (2-2) pass through the shell (2-1) and extend to the interior of the water exchange water tank (1); When one water pipe (2-2) is provided inside each shell (2-1), the lower pipe opening of the water pipe (2-2) on each group of shell tubes (2) is connected to the water inlet pipe (5), and the upper pipe opening of the water pipe (2-2) on each group of shell tubes (2) is connected to the first water outlet pipe (6); When no less than two water pipes (2-2) are provided inside each shell (2-1), the lower pipe openings of the water pipes (2-2) on each group of shell tubes (2) converge into a pipe connected to the water inlet pipe (5), and the upper pipe openings of the water pipes (2-2) on each group of shell tubes (2) converge into a pipe connected to the first water outlet pipe (6); The inlet of the water inlet pipe (5) passes through the water exchange tank (1) and extends to the outside of the water exchange tank (1); The upper and lower parts of the shell (2-1) on each group of the shell tubes (2) are provided with openings, the shell (2-1) on each group of the shell tubes (2) is connected to the refrigerant inlet pipe (3) through the upper opening, and the inlet of the refrigerant inlet pipe (3) passes through the upper side of the water exchange tank (1) and extends to the outside of the water exchange tank (1), the shell (2-1) on each group of the shell tubes (2) is connected to the refrigerant outlet pipe (4) through the lower opening, and the outlet of the refrigerant outlet pipe (4) passes through the lower side of the water exchange tank (1) and extends to the outside of the water exchange tank (1); A second water outlet pipe (7) is inserted on the upper side of the water exchange tank (1) away from the refrigerant inlet pipe (3).

2. The fluorine-water heat exchange device for air energy equipment according to claim 1, characterized in that: The water pipe (2-2) in each shell (2-1) is spirally wound around the inside of the shell (2-1).

3. The fluorine-water heat exchange device for air energy equipment according to claim 2, characterized in that: A hollow tube (8) with upper and lower tube openings blocked is provided in the middle of each shell (2-1), and each water pipe (2-2) in each shell (2-1) surrounds the hollow tube (8).

4. The fluorine-water heat exchange device for air energy equipment according to claim 3, characterized in that: The cross sections of the shell (2-1) and the hollow tube (8) are both circular.

5. The fluorine-water heat exchange device for air energy equipment according to claim 4, characterized in that: The height of the hollow tube (8) is the same as the height of the shell (2-1).

6. The fluorine-water heat exchange device for air energy equipment according to claim 5, characterized in that: When the number of the shells and tubes (2) is not less than two, the shells and tubes (2) are distributed in parallel and connected in a same-path manner.

7. The fluorine-water heat exchange device for air energy equipment according to claim 6, characterized in that: A plurality of fins (9) are provided on the outer side wall of the shell (2-1) on each group of shell tubes (2).

8. The fluorine-water heat exchange device for air energy equipment according to claim 7, characterized in that: The bottom of the water exchange tank (1) is provided with a sewage outlet (10).

9. The fluorine-water heat exchange device for air energy equipment according to claim 8, characterized in that: An electric heating wire port (11) is provided on the lower side of the water exchange tank (1).

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