Multi-connected direct expansion full air fresh air dehumidification system

Abstract

The present invention discloses a multi-connected direct expansion full air fresh air dehumidification system in the field of indoor air purification, including an outdoor unit and an indoor evaporative dehumidification unit, the outdoor unit is connected to a distribution box and a main control panel, the outdoor unit is connected to a plurality of indoor evaporative dehumidification units in parallel, the indoor evaporative dehumidification unit is connected to an indoor sub-control panel, the indoor evaporative dehumidification unit includes an outdoor fresh air inlet pipe, an indoor return air pipe, an evaporator, a reheater, a fan, an indoor air supply pipe and a temperature and humidity detection module, and an air pipe heat exchange pipe is arranged inside the evaporator. The present invention can ensure dehumidification even after the room temperature reaches the set value by matching air pipe heat exchange pipes and liquid pipe heat exchange pipes, and respectively controlling the temperature and humidity through two independent electronic expansion valves, and does not reduce the indoor temperature, thereby ensuring indoor comfort, adding a reheat coil to the evaporator, and utilizing the waste heat of the condenser to realize the reheat function, thereby achieving the purpose of dehumidification, realizing the utilization of waste heat, and improving energy utilization.

Description

Technical Field

[0001] The invention relates to the field of indoor air purification, in particular to a multi-connected direct expansion full air fresh air dehumidification system. Background Art

[0002] The fresh air system is an independent air treatment system consisting of an air supply system and an exhaust system. It is divided into two types: ducted fresh air system and ductless fresh air system. The ducted fresh air system consists of a fresh air fan and duct accessories. The fresh air fan purifies the outdoor air and introduces it into the room, and exhausts the indoor air through the duct; the ductless fresh air system consists of a fresh air fan, which also purifies the outdoor air and introduces it into the room. Relatively speaking, the ducted fresh air system is more suitable for industrial or large-area office areas due to the large amount of work, while the ductless fresh air system is more suitable for home use because it is easy to install.

[0003] However, when the existing fresh air system is used, the dehumidification process mostly requires the installation of a separate heating device, which consumes a lot of energy and cannot recycle the heat of the device itself, resulting in energy waste. At the same time, the installation process is cumbersome, the installation efficiency is low, and the reaction time of cold and warm switching is long, which is extremely impractical. Therefore, those skilled in the art provide a multi-connected direct expansion full air fresh air dehumidification system to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide a multi-connected direct expansion full air fresh air dehumidification system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-connected direct expansion all-air fresh air dehumidification system comprises an outdoor unit and an indoor evaporative dehumidification unit, the outdoor unit is connected to a distribution box and a main control panel, a plurality of indoor evaporative dehumidification units are connected in parallel to the outdoor unit, the indoor evaporative dehumidification unit is connected to an indoor sub-control panel, the indoor evaporative dehumidification unit comprises an outdoor fresh air inlet pipe, an indoor return air pipe, an evaporator, a reheater, a fan, an indoor air supply pipe and a temperature and humidity detection module, an air pipe heat exchange pipe is arranged inside the evaporator, a liquid pipe heat exchange pipe is arranged inside the reheater, a liquid pipe is connected to the end of the liquid pipe heat exchange pipe, an air pipe is arranged at the end of the air pipe heat exchange pipe, an air pipe temperature and humidity detection sensor is arranged on the air pipe, a liquid pipe temperature and humidity detection sensor is arranged on the liquid pipe, a reheat pipe is arranged at the other end of the liquid pipe heat exchange pipe, and the liquid pipe and the middle part of the air pipe are arranged inside the air-liquid heat exchange box.

[0007] As a further solution of the present invention: the liquid pipe heat exchange tube is fixed inside the reheater by a tube clamp, the gas pipe heat exchange tube is fixed inside the evaporator by a tube clamp, and the gas pipe and the liquid pipe perform heat exchange inside the gas-liquid heat exchange box.

[0008] As a further solution of the present invention: the liquid pipe temperature and humidity detection sensor is threadedly connected to the liquid pipe heat exchange pipe, the gas pipe temperature and humidity detection sensor is threadedly connected to the gas pipe heat exchange pipe, the temperature measuring probe of the liquid pipe temperature and humidity detection sensor extends into the liquid pipe heat exchange pipe, and the temperature measuring probe of the gas pipe temperature and humidity detection sensor extends into the gas pipe heat exchange pipe.

[0009] As a further solution of the present invention: the outdoor fresh air inlet pipe and the indoor return air pipe are arranged at one end of the indoor evaporative dehumidification unit, and the indoor air supply pipe is arranged at the other end of the indoor evaporative dehumidification unit.

[0010] As a further solution of the present invention: the outdoor fresh air inlet pipe, the indoor return air pipe and the indoor air supply pipe are connected to the indoor evaporative dehumidification unit through flanges and are communicated with the interior of the indoor evaporative dehumidification unit.

[0011] As a further solution of the present invention: the temperature and humidity detection module is arranged inside the indoor evaporative dehumidification unit at one end of the indoor air supply duct, the temperature and humidity detection module is connected to the indoor evaporative dehumidification unit by screws, and an air quality detector is arranged inside the indoor air supply duct.

[0012] As a further solution of the present invention: the evaporator, the reheater and the fan are all connected to the indoor evaporative dehumidification unit by screws, and the gas pipe heat exchange tube and the liquid pipe heat exchange tube are both provided with independent electronic expansion valves.

[0013] As a further solution of the present invention: the reheat pipe is connected to the heat dissipation part of the outdoor unit, the outdoor unit is connected to the indoor evaporative dehumidification unit through a refrigerant pipeline, and the fan is a DC variable frequency fan.

[0014] As a further solution of the present invention: the diameter of the reheat pipe is 15.88 mm, the diameter of the liquid pipe is 15.88 mm, and the diameter of the gas pipe is 22.22 mm.

[0015] As a further solution of the present invention: an air valve for adjusting the air volume is arranged inside the indoor air supply duct.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention uses matching gas pipe heat exchange tubes and liquid pipe heat exchange tubes, and controls the temperature and humidity respectively through two independent electronic expansion valves, which can ensure dehumidification even after the room temperature reaches the set value, and does not reduce the indoor temperature, ensuring indoor comfort. A reheat coil is added to the evaporator, and the waste heat of the condenser is used to realize the reheating function to achieve the purpose of dehumidification, which can realize the utilization of waste heat and improve energy utilization rate;

[0018] 2. The present invention has an independent refrigerant pipe connected to the outdoor unit in each indoor unit, which reduces the tedious installation of large pipes, is convenient for use in villas and large flats, and can also deliver dry air into the room when fresh air is supplied. The range of air supply and heating is wide during cooling, and the indoor heat load is borne to reduce the power consumption of the air conditioner. It can effectively realize the whole house air replacement and rapid switching of cooling and heating, thereby ensuring health. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a system diagram of the present invention;

[0020] Figure 2 It is a structural diagram of the indoor evaporative dehumidification unit in the present invention;

[0021] Figure 3 It is the heat exchange diagram of the reheater and the evaporator in the present invention;

[0022] Figure 4 It is the circuit connection installation diagram of the present invention.

[0023] In the figure: 1. outdoor unit; 2. distribution box; 3. main control panel; 4. indoor evaporative dehumidification unit; 401. outdoor fresh air inlet pipe; 402. indoor return air pipe; 403. evaporator; 404. reheater; 405. fan; 406. indoor air supply pipe; 407. temperature and humidity detection module; 5. indoor sub-control panel; 6. liquid pipe temperature and humidity detection sensor; 7. gas pipe temperature and humidity detection sensor; 8. reheat pipe; 9. liquid pipe; 10. gas pipe; 11. liquid pipe heat exchange pipe; 12. gas pipe heat exchange pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 4In the embodiment of the present invention, a multi-connected direct expansion full air fresh air dehumidification system includes an outdoor unit 1 and an indoor evaporative dehumidification unit 4, the outdoor unit 1 is connected to a distribution box 2 and a main control panel 3, a plurality of indoor evaporative dehumidification units 4 are connected in parallel to the outdoor unit 1, the indoor evaporative dehumidification unit 4 is connected to an indoor sub-control panel 5, the indoor evaporative dehumidification unit 4 includes an outdoor fresh air inlet pipe 401, an indoor return air pipe 402, an evaporator 403, a reheater 404, a fan 405, an indoor air supply pipe 406 and a temperature and humidity detection module 407, an air pipe heat exchange pipe 12 is arranged inside the evaporator 403, a liquid pipe heat exchange pipe 11 is arranged inside the reheater 404, the end of the liquid pipe heat exchange pipe 11 is connected to a liquid pipe 9, and the air pipe heat exchange An air pipe 10 is arranged at the end of the heat pipe 12, and an air pipe temperature and humidity detection sensor 7 is arranged on the air pipe 10, a liquid pipe temperature and humidity detection sensor 6 is arranged on the liquid pipe 9, and a reheat pipe 8 is arranged at the other end of the liquid pipe heat exchange pipe 11. The middle part of the liquid pipe 9 and the air pipe 10 is arranged inside the gas-liquid heat exchange box. Each indoor unit has an independent refrigerant pipeline connected to the outdoor unit 1, which reduces the cumbersome installation of large pipelines and is convenient for the use of villas and large flats. It can also deliver dry air into the room when fresh air is supplied, and the range of air supply and heating is widely adjusted during cooling, and the indoor heat load is borne to reduce the power consumption of the air conditioner, which can effectively realize the whole house air replacement and rapid switching of cooling and heating, thereby ensuring health.

[0026] In this embodiment, the liquid pipe heat exchange tube 11 is fixed inside the reheater 404 by a pipe clamp, and the gas pipe heat exchange tube 12 is fixed inside the evaporator 403 by a pipe clamp. The gas pipe 10 and the liquid pipe 9 perform heat exchange inside the gas-liquid heat exchange box. The liquid pipe temperature and humidity detection sensor 6 is connected to the liquid pipe heat exchange tube 11 by a thread, and the gas pipe temperature and humidity detection sensor 7 is connected to the gas pipe heat exchange tube 12 by a thread. The temperature measuring probe of the liquid pipe temperature and humidity detection sensor 6 extends into the liquid pipe heat exchange tube 11, and the temperature measuring probe of the gas pipe temperature and humidity detection sensor 7 extends into the gas pipe heat exchange tube 12. By matching the gas pipe heat exchange tube 12 and the liquid pipe heat exchange tube 11, and controlling the temperature and humidity respectively by two independent electronic expansion valves, it can be ensured that dehumidification can be achieved even after the room temperature reaches the set value, and the indoor temperature will not be reduced, thereby ensuring indoor comfort. A reheat coil is added to the evaporator 403, and the waste heat of the condenser is used to realize the reheating function to achieve the purpose of dehumidification, which can realize the utilization of waste heat and improve energy utilization.

[0027] In this embodiment, the outdoor fresh air inlet pipe 401 and the indoor return air pipe 402 are arranged at one end of the indoor evaporative dehumidification unit 4, and the indoor supply air pipe 406 is arranged at the other end of the indoor evaporative dehumidification unit 4. The outdoor fresh air inlet pipe 401, the indoor return air pipe 402 and the indoor supply air pipe 406 are connected to the indoor evaporative dehumidification unit 4 through flanges, and are connected to the interior of the indoor evaporative dehumidification unit 4. The outdoor fresh air inlet pipe 401 is connected to the external fresh air delivery pipeline.

[0028] In this embodiment, the temperature and humidity detection module 407 is arranged inside the indoor evaporative dehumidification unit 4 at one end of the indoor air supply duct 406. The temperature and humidity detection module 407 is connected to the indoor evaporative dehumidification unit 4 by screws. An air quality detector is arranged inside the indoor air supply duct 406. The temperature and humidity detection module 407 can detect the indoor temperature and humidity. The air quality detector monitors the indoor air quality in real time, automatically adjusts the wind speed and introduces fresh air according to CO2, to ensure excellent indoor air quality.

[0029] In this embodiment, the evaporator 403, the reheater 404 and the fan 405 are connected to the indoor evaporative dehumidification unit 4 by screws, and independent electronic expansion valves are provided on the gas pipe heat exchange tube 12 and the liquid pipe heat exchange tube 11. The electronic expansion valve is used to independently control the refrigerant flow rate, which greatly improves the energy efficiency ratio. Under low-pressure load, further precise control is achieved to improve the energy efficiency ratio.

[0030] In this embodiment, the reheat pipe 8 is connected to the heat dissipation part of the outdoor unit 1, and the outdoor unit 1 is connected to the indoor evaporative dehumidification unit 4 through a refrigerant pipeline. The fan 405 is a DC variable frequency fan. The DC motor is more energy-efficient and has low noise, large air volume, and high static pressure value, which can meet the air supply requirements.

[0031] In this embodiment, the diameter of the reheat pipe 8 is 15.88 mm, the diameter of the liquid pipe 9 is 15.88 mm, the diameter of the gas pipe 10 is 22.22 mm, and a wind valve for adjusting the air volume is provided inside the indoor air supply pipe 406. The air volume of the indoor air supply pipe 406 can be adjusted by the wind valve.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-connected direct expansion full air fresh air dehumidification system, comprising an outdoor unit (1) and an indoor evaporative dehumidification unit (4), characterized in that: The outdoor unit (1) is connected to a distribution box (2) and a main control panel (3); the outdoor unit (1) is connected in parallel to a plurality of indoor evaporative dehumidification units (4); the indoor evaporative dehumidification units (4) are connected to indoor sub-control panels (5); the indoor evaporative dehumidification units (4) include an outdoor fresh air inlet pipe (401), an indoor return air pipe (402), an evaporator (403), a reheater (404), a fan (405), an indoor air supply pipe (406), and a temperature and humidity detection module (407); the evaporator (403) is provided with a an air-pipe heat exchange pipe (12), a liquid-pipe heat exchange pipe (11) being arranged inside the reheater (404), an end of the liquid-pipe heat exchange pipe (11) being connected to a liquid pipe (9), an air pipe (10) being arranged at the end of the air-pipe heat exchange pipe (12), an air pipe temperature and humidity detection sensor (7) being arranged on the air pipe (10), a liquid pipe temperature and humidity detection sensor (6) being arranged on the liquid pipe (9), a reheat pipe (8) being arranged at the other end of the liquid-pipe heat exchange pipe (11), and the liquid pipe (9) and the middle of the air pipe (10) being arranged inside an air-liquid heat exchange box; The gas pipe heat exchange pipe (12) and the liquid pipe heat exchange pipe (11) are both provided with independent electronic expansion valves; The reheat pipe (8) is in communication with a heat dissipation portion of the outdoor unit (1), and the outdoor unit (1) is connected to the indoor evaporative dehumidification unit (4) via a refrigerant pipeline; The liquid pipe heat exchange tube (11) is fixed inside the reheater (404) via a tube clamp, the gas pipe heat exchange tube (12) is fixed inside the evaporator (403) via a tube clamp, and the gas pipe (10) and the liquid pipe (9) perform heat exchange inside the gas-liquid heat exchange box.

2. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The liquid pipe temperature and humidity detection sensor (6) is connected to the liquid pipe heat exchange pipe (11) via a threaded connection, and the gas pipe temperature and humidity detection sensor (7) is connected to the gas pipe heat exchange pipe (12) via a threaded connection. The temperature measuring probe of the liquid pipe temperature and humidity detection sensor (6) extends into the interior of the liquid pipe heat exchange pipe (11), and the temperature measuring probe of the gas pipe temperature and humidity detection sensor (7) extends into the interior of the gas pipe heat exchange pipe (12).

3. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The outdoor fresh air inlet pipe (401) and the indoor return air pipe (402) are arranged at one end of the indoor evaporative dehumidification unit (4), and the indoor air supply pipe (406) is arranged at the other end of the indoor evaporative dehumidification unit (4).

4. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The outdoor fresh air inlet pipe (401), the indoor return air pipe (402) and the indoor air supply pipe (406) are connected to the indoor evaporative dehumidification unit (4) via flanges, and are in communication with the interior of the indoor evaporative dehumidification unit (4).

5. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The temperature and humidity detection module (407) is arranged inside the indoor evaporative dehumidification unit (4) at one end of the indoor air supply pipe (406); the temperature and humidity detection module (407) is connected to the indoor evaporative dehumidification unit (4) via screws; and an air quality detector is arranged inside the indoor air supply pipe (406).

6. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The evaporator (403), the reheater (404), and the fan (405) are all connected to the indoor evaporative dehumidification unit (4) via screws.

7. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The fan (405) is a DC variable frequency fan.

8. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The diameter of the reheat pipe (8) is 15.88 mm, the diameter of the liquid pipe (9) is 15.88 mm, and the diameter of the gas pipe (10) is 22.22 mm.

9. The multi-connected direct expansion full air fresh air dehumidification system according to claim 1 is characterized in that: The indoor air supply pipe (406) is provided with an air valve for adjusting the air volume.

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