CN201096388Y - Multifunctional air conditioner device - Google Patents

Abstract

The utility model relates to a multifunctional air-conditioning device, which integrates heat pump air-conditioning condensation heat recovery technology and a porous moisture-absorbing runner containing a mixed desiccant. The temperature control part of the indoor air is formed by the heat pump air conditioner refrigerant cycle and the floor radiant water cycle. By adding a heat exchanger in front of the heat pump refrigerant cycle condenser as an air condenser, the outdoor air is heated for desiccant regeneration, and a heat exchanger is added behind the evaporator as a precooler for outdoor air pre-cooling. Dehumidify after cooling. Add a desiccant runner containing mixed desiccant, which is connected through the air duct. The dehumidification and regeneration cycles form part of the humidity control. The temperature control part and the humidity control part cooperate with each other, and can also be independently controlled to realize the dual-purpose of the heat pump air conditioner.

Description

A multifunctional air conditioner

technical field

The utility model relates to a multifunctional air-conditioning device suitable for adjusting the air temperature and humidity in residential buildings and other occasions where the use area is limited and the dehumidification capacity is not large, especially the dehumidification runner which can use the condensation heat of the heat pump to regenerate the mixed desiccant to realize the condensation heat Recycling and independent control of temperature and humidity. The heat pump air conditioner can be used in one machine for two purposes.

Background technique

With the promotion of national energy-saving policies and technologies, the Yangtze River Basin represented by Chongqing and Wuhan began to promote the use of floor radiation cooling/heating technology. Dehumidification and preventing floor condensation in summer have become the primary technical problems. In residential buildings and other places where the usable area of the building is limited and the dehumidification capacity is not large, in order to meet the requirements of human comfort, the heat pump air conditioner is usually used to control the room temperature, and then a refrigerated dehumidifier is added separately for humidity control. However, this method has exposed two major disadvantages: high energy consumption and unfriendly refrigerant to the environment. The traditional rotary dehumidifier is mainly used in commercial buildings and craft workshops. It has a large dehumidification capacity, high humidity control accuracy requirements, large air volume and equipment volume, and high regeneration temperature of the dehumidifier, which makes the condensation heat of the heat pump air conditioner Without comprehensive utilization, it is not suitable for residential buildings.

Utility model content

The purpose of this utility model is to provide a multi-functional air conditioner for the above-mentioned deficiencies in the prior art. It can not only realize the basic functions of the central air conditioner for floor radiation, but also recover the condensation heat of the air conditioner to improve energy utilization. In addition, the device also provides a rotor with a mixed desiccant, which replaces the original desiccant rotor with a single desiccant, reduces the regeneration temperature of the desiccant, and has a lower cost than a single LiCl rotor. The device integrates the heat pump air conditioner and dehumidification system into a whole, reduces the size of the equipment, realizes independent control of temperature and humidity, and realizes the dual-purpose of the heat pump air conditioner. It is suitable for residential buildings and other places with limited building area and small dehumidification capacity.

The technical solution adopted by the utility model to solve the technical problem is: the heat pump host refrigerant cycle of the floor radiation air conditioning system includes a compressor, a four-way reversing valve, a condenser, a throttle valve and an evaporator, which are connected through copper pipes. The water pump, the water side of the evaporator and the ground pipe are connected through plastic pipes to form a water cycle. In this utility model, copper pipes are used to connect a heat exchanger before the refrigerant cycle condenser and behind the evaporator, which are respectively used as an air condenser and a precooler. , the heat transfer is the same as that of the original counterpart. Then through the air duct, the air outlet side of the air condenser is connected with the inlet and outlet of the fan and the regeneration area of the dehumidification wheel. The outdoor air passes through this air duct to complete the regeneration of the desiccant, and then is blown out of the room to form a regeneration cycle of the desiccant. The air volume should meet the air volume required for desiccant regeneration, and the pressure head should be able to meet the resistance of the cycle; through the air duct, the air outlet side of the precooler and the dehumidification area of the dehumidification wheel, the fan inlet and outlet, and the room are connected, and the outdoor air passes through this The air duct is pre-cooled by the pre-cooler first, then dehumidified, and finally sent to the room to form a dehumidification cycle. The air volume of the fan should meet the indoor demand for fresh air, and the pressure head should be able to meet the resistance of the cycle; the porous material of the dehumidification wheel The micropores are attached with a mixed desiccant of LiCl and CaCl ₂ with a mass ratio of 1:1, and the runner is divided into two areas, which are divided by the dehumidification and regeneration circulation air duct, of which 1/ The 4 sector area is the regeneration area, and the other 3/4 sector area is the dehumidification area. The dehumidification wheel drives the shaft to rotate at a constant speed through the motor fixed at the central axis. The general speed is controlled at 5~10r/h, so that the mixed desiccant can continuously dehumidify and dehumidify. regeneration. At this time, the entire air conditioning system is divided into two parts: temperature control part and humidity control part. The temperature control part is completed by the heat pump refrigeration cycle and the floor radiation water cycle, and the humidity control part is completed by the heat pump refrigerant cycle and dehumidification and regeneration cycle. . The cooperation and independent control of the two parts are realized through the solenoid valve on the copper pipe and the air valve on the air pipe. Through the opening and closing control of the corresponding valve, the conversion of different season modes can be realized.

Taking an air-conditioned room of about ^100m2 as an example, using the multi-functional air-conditioning device involved in the utility model, the cooling/heating capacity of the main unit is 10Kw, and the size of the condenser and the wind condenser is 400mm×500mm×150mm (length×height×thickness) , the heat exchange rate is 12Kw; the heat exchange capacity of the evaporator is 10Kw, the size of the precooler is 400mm×400mm×150mm (length×height×thickness), and the heat exchange capacity is the same as that of the evaporator. The air volume and pressure head of the two fans are 300m ³ /h and 200Pa respectively. The dehumidification rotor adopts the rotor imported from Profute Company. The micropores on the porous material of the rotor adhere to the mixed desiccant of LiCl and CaCl ₂ in a mass ratio of 1:1. The rotational speed of the rotor is 5-10r/h, and the dehumidification capacity is 2 ~5Kg/h, the size is 250mm×200mm (diameter×thickness), and the shaft is driven by a 0.18Kw motor to rotate at a constant speed.

The operation mode of the utility model is divided into summer working condition, winter and transitional season heating working condition and transitional season cooling working condition, which are converted and controlled by the refrigerant copper pipe and the valve on the air pipe. Both the summer working condition and the transitional season cooling working condition are divided into a temperature control part and a humidity control part, and the two parts are carried out at the same time. The difference between the two working conditions is that the summer working condition introduces outdoor fresh air for dehumidification, and the transitional season cooling condition introduces indoor air circulation for dehumidification; in winter and transitional season heating conditions, only the temperature circulation part is used, and the humidity control part is blocked by the valve.

The beneficial effects of the utility model are: about 80% of the energy consumed by the dehumidifier with the dehumidifier is used for the regeneration of the desiccant, and the utility model reduces the regeneration temperature by changing the dehumidification runner to a runner containing a mixed dehumidifier, The condensing heat of the heat pump air conditioner is recovered and utilized, and the temperature control and humidity control are integrated into one heat pump air conditioner, realizing one machine with two functions. The control method of independent temperature and humidity control solves the technical problem of condensation on the floor during radiant cooling in summer, and provides guarantee for the promotion of radiant cooling/warming air conditioning.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Figure 1 is a schematic diagram of an air source heat pump combined with floor radiation air conditioning system.

Fig. 2 is a schematic diagram of the utility model.

Fig. 3 is a cycle flow diagram of the utility model in summer working condition.

Fig. 4 is a flow chart of the utility model heating cycle in winter and transitional seasons.

Fig. 5 is a cycle flow diagram of the utility model in transitional season refrigeration working conditions.

Among the figure 1. compressor, 2. four-way reversing valve, 3. condenser, 4. throttle valve, 5. evaporator, 6. circulating water pump, 7. radiation coil, 8. No. I heat exchanger, 9. Regenerative side fan, 10. Dehumidification rotor, 11. II heat exchanger, 12. Fresh air fan, 13. Indoor, 14. Rotary motor, 15. Rotary shaft, 16.1 solenoid valve, 17.2 solenoid valve , No. 18.3 solenoid valve, No. 19.4 solenoid valve, No. 20.1 air valve, No. 21.2 air valve, No. 22.3 air valve, No. 23.4 air valve, 24. Outdoor.

Detailed ways

According to the design specification, the number of indoor air changes in a residential building is 1.0 times/h, so a 100m ² air-conditioned room requires about 300m ³ /h of fresh air, and then calculated according to the indoor and outdoor meteorological parameters used for design and the indoor heat dissipation and humidity dissipation, we get The dehumidification capacity of the room is about 2-5kg/h. Referring to the manufacturing process of the existing LiCl dehumidification wheel, select a wheel containing a mixed desiccant, wherein the mass ratio of the mixed desiccant between LiCl and _CaCl2 is 1:1, and the size of the wheel is 250mm×200mm (diameter×thickness) . The dehumidification and regeneration area of the runner is divided according to the sector angle of 3:1, and the 0.18Kw motor drives the shaft to rotate at a constant speed of 5r/h, so that the dehumidifier is dehumidified and regenerated continuously. Since the regeneration of the dehumidifier needs to absorb heat, it is considered to recover the condensation waste heat of the main unit of the floor radiation heat pump, that is, before the refrigerant cycle condenser, a heat exchanger with the same heat transfer capacity as the original condenser is connected with a copper pipe as the air condenser , the size is 400mm×500mm×150mm (length×height×thickness), the heat exchange rate is 12Kw, and it forms an air duct with the fan, which heats the outdoor air and blows it to the regeneration area of the runner, so that the dehumidifier can regain its dehumidification capacity. Afterwards, the air is exhausted outside. In addition, after the refrigerant circulation evaporator, copper tubes are used to connect a heat exchanger as a pre-cooler. × height × thickness), the outdoor fresh air is pre-cooled by the pre-cooler, and then blows to the dehumidification area of the dehumidification wheel, and then is blown into the room by the fan. The air volume of the fan is 300m ³ /h, and the pressure head is 200Pa. The specific operation mode is described as follows:

In Figure 2 and Figure 3, under the summer operating conditions, it is divided into a temperature control cycle part and a humidity control cycle part. The operating condition of the temperature control cycle part is: the refrigerant of the heat pump machine passes through the compressor (1), becomes a high-temperature and high-pressure gas, passes through the four-way reversing valve (2), and flows to No. I heat exchanger (8) (as an air condenser), It flows to the condenser (3) through the No. 4 solenoid valve (19) for further cooling, and reaches the evaporator (5) through the throttle valve (4), exchanges heat with the water in the radiant coil (7), and then flows to the No. II heat exchanger (11) heat up further, flow back to compressor (1) after No. 2 electromagnetic valve (17) and four-way reversing valve (2) and enter next circulation. The water in the radiant coil (7) provides circulating power through the circulating water pump (6) and bears the sensible heat load of the room (13); The rotating shaft (15) rotates at a certain speed, so that the dehumidifying agent is continuously dehumidified and regenerated. The outdoor air is powered by the regenerative side fan (9), blows to No. 1 heat exchanger (8), after being heated, passes through the regenerative zone of the dehumidification wheel (10), so that the desiccant can obtain regenerative capacity, and finally the air is discharged to the outside (twenty four). At the same time, the outdoor (24) fresh air is powered by the fresh fan (12), pre-cooled by No. II heat exchanger (11), then blows to the dehumidification area of the dehumidification runner (10), and finally enters the room (13) to achieve dehumidification Purpose.

In summer working conditions, in the temperature control cycle, No. 2 solenoid valve (17) and No. 4 solenoid valve (19) are open, and the corresponding No. 1 solenoid valve (16) and No. 3 solenoid valve (18) are Closed state; in the humidity control cycle, No. 1 air valve (20) and No. 3 air valve (22) are in the open state, and the corresponding No. 2 air valve (21) and No. 4 air valve (23) are in the closed state.

In Figure 2 and Figure 4, under the winter working conditions and transition season heating working conditions, since the room is a heating process, dehumidification is not required, so there is no humidity control cycle part. The specific operation conditions are: the refrigerant passes through the compressor (1), becomes a high-temperature and high-pressure gas, and changes direction through the four-way reversing valve (2) (at this time, follow the path indicated by the dotted line in Figure 2) and the No. 1 solenoid valve (16) , flows to the evaporator (5), and after exchanging heat with the water in the radiant coil (7), flows to the throttle valve (4) and the condenser (3), and passes through the No. 3 solenoid valve (18) and four-way reversing Valve (2) (at this time by the path represented by the dotted line in Fig. 2), finally flows back to the compressor (1) to enter the next cycle.

In the winter and transition season heating conditions, in the temperature control cycle, the No. 1 solenoid valve (16) and No. 3 solenoid valve (18) are in the open state, and the corresponding No. 2 solenoid valve (17) and No. 4 solenoid valve Valve (19) is closed.

In Figure 2 and Figure 5, the specific operation conditions of refrigeration and dehumidification regeneration/ventilation under the cooling condition in the transitional season are as follows: the temperature control cycle part is consistent with the temperature control cycle of the summer working condition. The operating conditions of the humidity control cycle are as follows: the dehumidification runner (10) drives the runner shaft (15) to rotate at a certain rate through the runner motor (14), so that the dehumidifier is continuously dehumidified and regenerated. The outdoor (24) air is powered by the regenerative side blower (9), blows to No. I heat exchanger (8), passes through the regenerative zone of the dehumidification runner (10) after being heated, so that the desiccant can obtain regenerative ability, and finally the air is Vent to the outside (24). And indoor (13) air is provided power by new fan (12), through No. II heat exchanger (11), blows to the dehumidification zone of dehumidification runner (10) again, enters indoor (13) at last, reaches dehumidification purpose.

In the transitional season cooling condition, in the temperature control cycle, the No. 2 solenoid valve (17) and No. 4 solenoid valve (19) are open, and the corresponding No. 1 solenoid valve (16) and No. 3 solenoid valve (18 ) is closed. In the humidity control cycle, No. 2 air valve (21) and No. 3 air valve (22) are in open state, and No. 1 air valve (20) and No. 4 air valve (23) are in closed state, that is to use indoor air circulation.

Regardless of summer dehumidification or transitional season dehumidification, the humidity control cycle part has a characteristic: when the indoor air humidity meets the requirements, the No. 4 air valve (23) in the humidity control cycle will open, and the corresponding No. 3 air valve ( 22) Closed, that is, the air bypasses the dehumidification runner (10) and no longer dehumidifies. When the No. 4 air valve (23) is opened, the linkage No. 3 air valve (22) is closed, the regenerative side fan (9) is closed, the No. 4 solenoid valve (19) is closed, the No. 2 solenoid valve (17) is closed, and the No. 1 solenoid valve (16) Open, that is, directly introduce air without dehumidification.

Claims (2)

1. a multi-functional air conditioner device is communicated with compressor, four-way change-over valve, condenser, choke valve and evaporimeter by copper pipe, forms the cold-producing medium circulation; Plastic tube is communicated with water pump, evaporator water side and ground coil pipe, the circulation of formation water, it is characterized in that being communicated with a heat exchanger by copper pipe before the condenser of cold-producing medium circulation, be communicated with this heat exchanger air side and blower fan import and export and desiccant wheel renewing zone by airduct, formation dehumidizer regeneration cycle; Also be communicated with a heat exchanger by copper pipe behind the evaporimeter, be communicated with this heat exchanger air side and desiccant wheel dehumidifying district and blower fan import and export, form the dehumidifying air channel by airduct; The rotating shaft of a motor-driven runner of desiccant wheel central shaft fixed-site is at the uniform velocity rotated.

2. a kind of multi-functional air conditioner device according to claim 1 is characterized in that: with LiCl and CaCl ₂Be attached to after two kinds of dehumidizers mix and make diameter * thick in the micropore of runner porous material for mixing the dehumidizer desiccant wheel containing of 250mm * 200mm.

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