A fan coil thermal performance testing device

Abstract

The utility model relates to the technical field of thermal performance detection of fan coil units, and discloses a thermal performance detection device for fan coil units, including an environmental chamber, a square groove is provided on the side of the environmental chamber, a wind tunnel tube is connected through the surface of the square groove, a variable frequency fan is arranged on one side of the interior of the wind tunnel tube, a first sampler is arranged on the other side of the interior of the wind tunnel tube, and one end of the wind tunnel tube passes through the interior of the square groove and is connected through the fan coil unit. The thermal performance detection device for fan coil units can measure the air flow rate and the dry-bulb and wet-bulb temperatures of the air according to the flow direction of the air through the arrangement of the variable frequency fan, the wind tunnel tube, the fine-adjustment water tank, the water cooler and the air handling box, and the fine-adjustment water tank can measure the water temperature and the water flow rate, and the water cooler mainly maintains the temperature of the water supply tank and provides constant temperature cooling water, and the air handling box mainly maintains the environment at a constant temperature, so that the external environment reaches the steady-state condition required by the standard.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal performance detection of fan coil units, in particular to thermal performance detection equipment for fan coil units. Background Art

[0002] The fan coil unit is one of the terminal devices of the air conditioning system, which is composed of a small fan, a motor and a coil (air heat exchanger). When chilled water or hot water flows through the coil tube, it exchanges heat with the air outside the tube, so that the air is cooled, dehumidified or heated to adjust the indoor air parameters. It is a commonly used cooling and heating terminal device.

[0003] A thermal performance detection device for a fan coil unit disclosed in publication number CN209639937U can facilitate installation and disassembly between the fan coil unit and the detection device.

[0004] However, this kind of thermal performance testing device for fan coil units has the following disadvantages: during the thermal performance testing period, the stability is low, and during the cooling and heating period, the temperature of the water supply tank cannot be maintained to provide constant temperature cooling water. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The technical problem solved by the utility model is to provide a fan coil thermal performance testing device which is highly practical, can be simply operated and has a relatively simple structure. It solves the problems raised in the above background technology that the stability is low during the thermal performance testing and the temperature of the water supply tank cannot be maintained during the cooling and heating period to provide constant temperature cooling water.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a fan coil thermal performance testing device, including an environmental bin, a square groove is opened on the side of the environmental bin, a wind tunnel tube is connected through the surface of the square groove, a variable frequency fan is arranged on one side of the wind tunnel tube, a first sampler is arranged on the other side of the wind tunnel tube, one end of the wind tunnel tube passes through the interior of the square groove and is connected to the fan coil, and a lifting platform is arranged at the bottom of the fan coil.

[0009] Optionally, an air outlet slot is provided on one side of the top end of the wind tunnel tube, and a first air duct tube is connected through the surface of the air outlet slot.

[0010] Optionally, an upper bin is provided on the top of the environmental bin body, and a perforated plate is provided inside the upper bin.

[0011] Optionally, one side of the upper bin is connected to one end of the first air duct pipe, the other side of the upper bin is connected to the second air duct pipe, and the bottom end of the second air duct pipe is connected to the air handling box.

[0012] Optionally, a second sampler is provided on one side of the interior of the environmental chamber body, one side of the second sampler is connected through a first connecting pipe, one end of the first connecting pipe passes through the interior of the environmental chamber body and is connected through a fine-tuning water tank.

[0013] Optionally, a second connecting pipe is connected through one side of the top of the fine-adjustment water tank, and a weighing machine is connected through one end of the second connecting pipe.

[0014] Optionally, a third connecting pipe is connected through one side of the weighing machine, and a water cooler is connected through one side of the third connecting pipe.

[0015] (III) Beneficial effects

[0016] The utility model provides a fan coil thermal performance testing device, which has the following beneficial effects:

[0017] 1. The fan coil thermal performance testing equipment can measure the air flow rate and the dry-bulb and wet-bulb temperatures of the air according to the direction of the air flow through the setting of variable frequency fan, wind tunnel tube, fine-adjustment water tank, water chiller and air handling box. The fine-adjustment water tank can measure the water temperature and water flow rate. The water chiller mainly maintains the temperature of the water supply tank and provides constant temperature cooling water, while the air handling box mainly maintains the ambient temperature so that the external environment reaches the steady-state conditions required by the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the environmental warehouse of the utility model;

[0020] Figure 3 This is a schematic diagram of the wind tunnel tube structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the upper warehouse structure of the utility model.

[0022] In the figure: 1. Environmental chamber; 2. Square trough; 3. Wind tunnel tube; 4. Variable frequency fan; 5. First sampler; 6. Fan coil; 7. Lifting platform; 8. Air outlet slot; 9. First air duct pipe; 10. Upper chamber; 11. Orifice plate; 12. Air handling box; 13. Second sampler; 14. First connecting pipe; 15. Fine adjustment water tank; 16. Weighing machine; 17. Third connecting pipe; 18. Water cooler; 19. Second connecting pipe; 20. Second air duct pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 4 The utility model provides a technical solution: a fan coil thermal performance testing device, including an environmental warehouse body 1, the environmental warehouse body 1 is made of polyurethane single-sided stainless steel sandwich color steel plate, and is equipped with a test piece mounting frame, an air path, and a water path transition connecting pipe to improve the stability of the environmental warehouse body 1. A square groove 2 is opened on the side of the environmental warehouse body 1, and a wind tunnel tube 3 is connected to the surface of the square groove 2. A variable frequency fan 4 is arranged on one side of the wind tunnel tube 3, and a first sampler 5 is arranged on the other side of the wind tunnel tube 3. One end of the wind tunnel tube 3 passes through the square groove 2 and is connected to a fan coil 6, and a lifting platform 7 is arranged at the bottom of the fan coil 6.

[0025] See also Figure 3 and Figure 4 An air outlet slot 8 is provided on one side of the top of the wind tunnel tube 3, and a first air duct pipe 9 is connected to the surface of the air outlet slot 8. An upper bin 10 is provided on the top of the environmental bin body 1, and a perforated plate 11 is provided inside the upper bin 10. One side of the upper bin 10 is connected to one end of the first air duct pipe 9, and the other side of the upper bin 10 is connected to the second air duct pipe 20. The bottom end of the second air duct pipe 20 is connected to an air handling box 12. The air handling box 12 is mainly composed of refrigeration and insulation pipes, refrigeration units, air heaters, circulating fans, etc., which are mainly used to maintain a constant temperature in the environment. According to the flow direction of the air, it can be used to measure the air flow rate and the dry-bulb and wet-bulb temperatures of the air.

[0026] See also Figure 1 and Figure 2 A second sampler 13 is arranged on one side of the interior of the environmental bin body 1, and a first connecting pipe 14 is connected to one side of the second sampler 13. One end of the first connecting pipe 14 passes through the interior of the environmental bin body 1 and is connected to a fine-tuning water tank 15. The interior of the fine-tuning water tank 15 includes: a piston-type refrigeration compression condensing unit adopts water cooling. Due to the small cooling capacity, two compressors are arranged, and a water tank-type evaporator. The evaporator is a water tank-type direct evaporation. For the convenience of adjustment, it is divided into two groups, and the water tank-type evaporator is provided with a stirrer to make the water temperature in the water tank uniform.

[0027] See also Figure 1 and Figure 2A second connecting pipe 19 is connected to one side of the top of the fine-tuning water tank 15, one end of the second connecting pipe 19 is connected to a weighing machine 16, one side of the weighing machine 16 is connected to a third connecting pipe 17, and one end of the third connecting pipe 17 is connected to a water cooler 18. The water cooler 18 is mainly composed of a refrigeration pipeline, a refrigeration unit, a heater, a water circulation pump, a water tank evaporator, a water supply tank, etc., and is mainly used to maintain the temperature of the water supply tank and provide constant temperature cooling water.

[0028] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0029] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan coil unit thermal performance testing device, comprising an environmental chamber (1), characterized in that: A square groove (2) is provided on the side of the environmental chamber body (1); a wind tunnel tube (3) is connected through the surface of the square groove (2); a variable frequency fan (4) is provided on one side of the interior of the wind tunnel tube (3); a first sampler (5) is provided on the other side of the interior of the wind tunnel tube (3); one end of the wind tunnel tube (3) passes through the interior of the square groove (2) and is connected through a fan coil unit (6); a lifting platform (7) is provided at the bottom of the fan coil unit (6).

2. A fan coil unit thermal performance testing device according to claim 1, characterized in that: An air outlet slot (8) is provided on one side of the top end of the wind tunnel tube (3), and a first air duct tube (9) is connected through the surface of the air outlet slot (8).

3. The fan coil unit thermal performance testing device according to claim 1, characterized in that: An upper bin (10) is arranged on the top of the environmental bin body (1), and a perforated plate (11) is arranged inside the upper bin (10).

4. A fan coil unit thermal performance testing device according to claim 3, characterized in that: One side of the upper bin (10) is connected to one end of the first air duct pipe (9), and the other side of the upper bin (10) is connected to the second air duct pipe (20), and the bottom end of the second air duct pipe (20) is connected to the air treatment box (12).

5. The fan coil unit thermal performance testing device according to claim 1, characterized in that: A second sampler (13) is provided on one side of the interior of the environmental chamber (1), one side of the second sampler (13) is connected through a first connecting pipe (14), and one end of the first connecting pipe (14) passes through the interior of the environmental chamber (1) and is connected through a fine-tuning water tank (15).

6. A fan coil unit thermal performance testing device according to claim 5, characterized in that: A second connecting pipe (19) is connected through one side of the top end of the fine-adjustment water tank (15), and a weighing machine (16) is connected through one end of the second connecting pipe (19).

7. A fan coil unit thermal performance testing device according to claim 6, characterized in that: A third connecting pipe (17) is connected through one side of the weighing machine (16), and a water cooler (18) is connected through one side of the third connecting pipe (17).

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