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. The top end and the bottom end of each shell of each set of shell pipes are in a blocked state, the bottom end of each shell extends downwards to form a cavity, a plurality of vertically-distributed water pipes are arranged in each shell of each set of shell pipes, the top ends of the water pipes penetrate through the top ends of the shells to be communicated with the interior of the heat exchange water tank, and the top ends of the water pipes penetrate through the top ends of the shells to be communicated with the interior of the heat exchange water tank. The bottom ends of the water pipes penetrate through the bottom end of the shell to be communicated with the interiors of the cavities, and the bottom end of each cavity is connected with the water inlet pipe. 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 the material cost is increased, and installation personnel need to assemble the equipment on site, and then the 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 problem that the heat exchanger needs to be used with a buffer water tank in the water system, thereby increasing the material cost, and the installation personnel are required 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 shell and tube set includes a shell and a plurality of water tubes;

[0008] The top and bottom ends of each shell of each group of shell tubes are in a blocked state, and the bottom end of each shell extends downward to form a cavity. A plurality of vertically distributed water pipes are arranged inside each shell of each group of shell tubes. The top ends of the plurality of water pipes pass through the top end of the shell to communicate with the inside of the heat exchange water tank, and the bottom ends of the plurality of water pipes pass through the bottom end of the shell to communicate with the inside of the cavity. The bottom end of each cavity is connected to a water inlet pipe, and the inlet of the water inlet pipe passes through the side wall of the heat exchange water tank and extends to the outside of the heat exchange water tank.

[0009] The upper and lower ends of the shells on each group of shell tubes are provided with openings, and the shells on each group of shell tubes are connected to the refrigerant inlet pipe through the openings on the upper end, 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 shell tubes are connected to the refrigerant outlet pipe through the openings on the lower end, 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.

[0010] A water outlet pipe is inserted at the lower side of the water exchange tank away from the refrigerant inlet pipe.

[0011] Optionally, the cross-sections of the shell and the water pipe are both circular.

[0012] Optionally, the cavity is hemispherical in shape.

[0013] 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.

[0014] Optionally, a plurality of fins are provided on the outer side wall of the shell of each group of shell tubes.

[0015] Optionally, a connecting pipe is provided at the bottom end of each cavity, and each cavity is connected to the water inlet pipe through the connecting pipe.

[0016] Optionally, a sewage outlet is provided at the bottom of the water exchange tank.

[0017] Optionally, an electric heating wire port is provided on the lower side of the water exchange water tank.

[0018] The utility model provides an air energy equipment fluorine water heat exchange device, thereby achieving the following technical effects:

[0019] 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;

[0020] 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;

[0021] 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;

[0022] 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.

[0023] 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

[0024] 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;

[0025] Figure 2 This is a structural schematic diagram of a fluorine-water heat exchange device for air energy equipment provided by the utility model, in which a connecting pipe is installed in the middle of the shell and tube;

[0026] 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.

[0027] List of reference numerals:

[0028] 1. Heat exchange water tank; 2. Shell and tube; 2-1. Shell; 2-2. Water pipe; 2-3. Cavity; 3. Water inlet pipe; 4. Refrigerant inlet pipe; 5. Refrigerant outlet pipe; 6. Water outlet pipe; 7. Connecting pipe; 8. Fins; 9. Drain outlet; 10. Electric heating wire outlet. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Reference Figures 1 to 3 The utility model provides a fluorine-water heat exchange device for air energy equipment, which can solve the problems of low heat exchange efficiency of existing heat exchangers, and 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.

[0033] 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;

[0034] At least one set of shell and tubes 2 is arranged inside the water exchange tank 1;

[0035] Each set of shell and tube 2 includes a shell 2-1 and a plurality of water pipes 2-2;

[0036] The top and bottom of each shell 2-1 of each group of shells and tubes 2 are both blocked, and the bottom of each shell 2-1 extends downward to form a cavity 2-3. A plurality of vertically distributed water pipes 2-2 are arranged inside each shell 2-1 of each group of shells and tubes 2. The tops of the plurality of water pipes 2-2 pass through the top of the shell 2-1 to communicate with the inside of the heat exchange water tank 1, and the bottoms of the plurality of water pipes 2-2 pass through the bottom of the shell 2-1 to communicate with the inside of the cavity 2-3. The bottom of each cavity 2-3 is connected to the water inlet pipe 3, and the inlet of the water inlet pipe 3 passes through the side wall of the heat exchange water tank 1 and extends to the outside of the heat exchange water tank 1.

[0037] The upper and lower ends of the shell 2-1 on each group of shell tubes 2 are provided with openings, and the shell 2-1 on each group of shell tubes 2 is connected to the refrigerant inlet pipe 4 through the opening at the upper end, and the inlet of the refrigerant inlet pipe 4 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 shell tubes 2 is connected to the refrigerant outlet pipe 5 through the opening at the lower end, and the outlet of the refrigerant outlet pipe 5 passes through the lower side of the water exchange tank 1 and extends to the outside of the water exchange tank 1;

[0038] A water outlet pipe 6 is inserted into the lower side of the water exchange tank 1 away from the side of the refrigerant inlet pipe 4 .

[0039] 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 4 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 allow the compressor to transport the gaseous high-temperature refrigerant from top to bottom through the refrigerant inlet pipe 4 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 3 and the water outlet pipe 6 are both connected to the indoor terminal pipeline system.

[0040] In addition, multiple water pipes 2-2 are evenly arranged inside each shell 2-1. The number of water pipes 2-2 in each shell 2-1 can be determined according to the actual heat exchange demand and the diameter of the water pipes 2-2. For example, according to actual demand, the number of water pipes required is 6-12. If a water pipe 2-2 with a large diameter is selected, 6 water pipes 2-2 are required in each shell 2-1. If a water pipe 2-2 with a small diameter is selected, 12 water pipes 2-2 are required in each shell 2-1. In addition, the length of the water pipe 2-2 can be increased or decreased according to the unit power and design energy efficiency.

[0041] Reference Figure 3 Optionally, the cross-sections of the shell 2-1 and the water pipe 2-2 are both circular.

[0042] Among them, the cross-sections of the shell 2-1 and the water pipe 2-2 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 water pipe 2-2 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.

[0043] Reference Figure 1 , Optionally, the shape of the cavity 2-3 is hemispherical.

[0044] The shape of the cavity 2-3 can be adapted to the shape of the shell 2-1, and secondly, the heat exchange area can be increased to improve the heat exchange efficiency.

[0045] 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.

[0046] 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.

[0047] Reference Figure 3 Optionally, a plurality of fins 8 are provided on the outer side wall of the shell 2 - 1 on each group of shell tubes 2 .

[0048] Among them, the shell 2-1 of each group of shells and tubes 2 can change its shape and add multiple fin structures to increase the heat exchange efficiency according to the actual heat exchange requirements. Multiple fins 8 are evenly distributed on the outer wall of the shell 2-1, and the structural form of the fins 8 can be straight fins, louver fins, serrated fins, porous fins and corrugated fins.

[0049] Reference Figure 2 Optionally, a connecting pipe 7 is provided at the bottom end of each cavity 2 - 3 , and each cavity 2 - 3 is connected to the water inlet pipe 3 via the connecting pipe 7 .

[0050] The connection pipe 7 is provided to connect the cavity 2 - 3 with the water inlet pipe 3 .

[0051] Reference Figure 1 Optionally, a sewage outlet 9 is provided at the bottom of the water exchange tank 1 .

[0052] The sewage outlet 9 is used to discharge impurities that have sunk to the bottom of the water exchange tank 1 .

[0053] Reference Figure 1 Optionally, an electric heating wire port 10 is provided on the lower side of the water exchange tank 1 .

[0054] Among them, the setting of the electric heating wire port 11 can meet the design requirements of multi-energy coupling.

[0055] Working principle: (taking no less than two sets of shell and tube 2 as an example)

[0056] 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 4 to the shell 2-1 of each group of shell tubes 2, and the indoor circulating water flows from bottom to top in the multiple water pipes 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 top of the water pipe 2-2, it flows from top to bottom again to the water outlet pipe 6 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.

[0057] 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.

[0058] 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 a plurality of water pipes (2-2); The top and bottom ends of each shell (2-1) of each group of shell tubes (2) are both in a blocked state, and the bottom end of each shell (2-1) extends downward to form a cavity (2-3); a plurality of vertically distributed water pipes (2-2) are arranged inside each shell (2-1) of each group of shell tubes (2); the top ends of the plurality of water pipes (2-2) pass through the top end of the shell (2-1) to communicate with the inside of the heat exchange tank (1); the bottom ends of the plurality of water pipes (2-2) pass through the bottom end of the shell (2-1) to communicate with the inside of the cavity (2-3); the bottom end of each cavity (2-3) is connected to a water inlet pipe (3); and the inlet of the water inlet pipe (3) passes through the side wall of the heat exchange tank (1) and extends to the outside of the heat exchange tank (1); The upper and lower ends 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 (4) through the opening at the upper end, and the inlet of the refrigerant inlet pipe (4) 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 (5) through the opening at the lower end, and the outlet of the refrigerant outlet pipe (5) passes through the lower side of the water exchange tank (1) and extends to the outside of the water exchange tank (1); A water outlet pipe (6) is inserted into the lower side of the water exchange tank (1) away from the side of the refrigerant inlet pipe (4).

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

3. The fluorine-water heat exchange device for air energy equipment according to claim 2, characterized in that: The cavity (2-3) is in a hemispherical shape.

4. The fluorine-water heat exchange device for air energy equipment according to claim 3, 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.

5. The fluorine-water heat exchange device for air energy equipment according to claim 4, characterized in that: A plurality of fins (8) are provided on the outer side wall of the shell (2-1) on each group of shell tubes (2).

6. The fluorine-water heat exchange device for air energy equipment according to claim 5, characterized in that: A connecting pipe (7) is provided at the bottom end of each cavity (2-3), and each cavity (2-3) is connected to the water inlet pipe (3) via the connecting pipe (7).

7. The fluorine-water heat exchange device for air energy equipment according to claim 6, characterized in that: A sewage outlet (9) is provided at the bottom of the water exchange tank (1).

8. The fluorine-water heat exchange device for air energy equipment according to claim 7, characterized in that: An electric heating wire port (10) is provided on the lower side of the water exchange tank (1).

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