CN201740130U - Temperature and humidity independent control type air-conditioning unit - Google Patents

Abstract

The utility model discloses a temperature and humidity independent control type air-conditioning unit which comprises an air feeder arranged in the downstream of the air duct, and a fresh air passage and an air return passage are included in the upstream of the air duct, wherein a dehumidification surface cooler is also arranged in the fresh air passage, and a temperature-regulating surface cooler connected in parallel with the dehumidification surface cooler is arranged in the air return passage. Since the temperature and humidity are controlled by different surface coolers separately in the air-conditioning unit, independent regulation on temperature and humidity is realized in the air condition system, and remarkable energy saving effect is achieved.

Description

Temperature and humidity separately controlled air conditioning unit

technical field

The utility model relates to an air conditioner unit, more precisely a temperature and humidity separate control type air conditioner unit.

Background technique

The air conditioning unit is the terminal equipment that undertakes the task of air treatment in the air conditioning system, and heat and humidity treatment of the air is one of the main tasks undertaken by the air conditioning unit. Refer to Fig. 1 and Fig. 2 for the system schematic diagrams of existing single-fan air-conditioning units and dual-fan air-conditioning units. As shown in Fig. 1 and Fig. 2, in the air conditioning system that requires control of temperature and humidity, in the existing air conditioning units, the equipment responsible for cooling and dehumidification tasks in summer is the same group of surface coolers 1, so the air supply It is difficult to adjust the temperature and humidity independently. In summer, it is usually necessary to rely on the reheating effect of the heater 2 to realize the dual control of temperature and humidity. As a result, there will be a phenomenon of offsetting cold and heat, and the energy consumption is large. This is the existing air conditioning system and Schematic defect of the air conditioning unit.

Utility model content

The purpose of the utility model is to provide a temperature-humidity separate control type air conditioner unit, which realizes the separate control of the cooling treatment and the dehumidification treatment, avoids the offset of cold and heat, and saves energy.

In order to solve the above technical problems, the technical solution of the utility model is that a temperature and humidity separately controlled air conditioner unit includes a blower arranged downstream of the air duct, and the upstream of the air duct includes a fresh air channel and a return air channel. A dehumidification surface cooler is provided in the fresh air passage, a temperature-regulating surface cooler is provided in the return air passage, and the temperature-regulating surface cooler is connected in parallel with the dehumidification surface cooler.

Preferably, the dehumidifying surface cooler and the temperature regulating surface cooler are cold water coils or direct evaporative cooling coils.

Preferably, a fresh air valve is provided upstream of the fresh air passage, and a return air valve is provided upstream of the return air passage.

Preferably, a return fan is also included, and the return fan is arranged upstream of the return air passage.

Preferably, the return air passage is separated from or communicated with the fresh air passage through a bypass valve.

Preferably, the return air channel is provided with a first return air inlet and a second return air inlet, and the return air valve is arranged at the second return air inlet; the return fan is arranged at the first return air inlet and the second return air inlet. Between the two return air inlets.

Preferably, an air exhaust port is further provided on the air return channel, and an air exhaust valve is arranged at the air exhaust port.

Preferably, a humidifier is further provided downstream of the air duct.

Preferably, the dehumidification surface cooler and the temperature-regulating surface cooler are arranged up and down or left and right.

The temperature and humidity separate control type air conditioner unit of the utility model is respectively provided with a dehumidification surface cooler and a temperature-regulating surface cooler in the fresh air passage and the return air passage, and the dehumidification surface cooler performs dehumidification treatment on the fresh air in the fresh air passage respectively. The temperature-regulating surface cooler cools the return air in the return air passage, so as to realize separate control of temperature and humidity. Compared with the existing technology, since the temperature and humidity are controlled separately by different surface coolers, the temperature and humidity of the air-conditioning system can be independently adjusted without reheating in summer, which has a significant energy-saving effect.

Further, it also includes a return fan, and the return air channel and the fresh air channel are connected or separated by a bypass valve. This kind of temperature and humidity control type air conditioner with dual fans can be adjusted by closing and opening the bypass valve. , to meet the different needs of fresh air volume in different seasons, easy to use, high energy utilization rate.

Description of drawings

Fig. 1 is the schematic diagram of existing single-fan air-conditioning unit;

Fig. 2 is the schematic diagram of existing double-fan air-conditioning unit;

Fig. 3 is a schematic diagram of Embodiment 1 of the medium-temperature and humidity-separated air-conditioning unit of the present invention;

Fig. 4 is a schematic diagram of Embodiment 2 of the medium-temperature and humidity-separated air-conditioning unit of the present invention;

Fig. 5 is a schematic diagram of Embodiment 3 of the medium-temperature-humidity split-controlled air-conditioning unit of the present invention.

Among them, the relevant reference signs are as follows:

1——surface cooler; 2——heater; 3——dehumidifying surface cooler; 4——temperature regulating surface cooler;

5—supply fan; 6—return fan; 7—fresh air valve; 8—return air valve;

9——exhaust air valve; 10——bypass air valve.

In the figure, the direction pointed by the arrow is the wind direction, R.A represents the return air, F.A represents the fresh air, S.A represents the supply air, and E.A represents the exhaust air.

Detailed ways

The basic concept of the utility model is that a dehumidification surface cooler and a temperature-regulating surface cooler are respectively arranged in the fresh air passage and the return air passage of the air-conditioning unit, and the two sets of surface coolers are connected in parallel, through the dehumidification surface cooler and the temperature-regulating surface cooling The device dehumidifies and regulates the temperature of fresh air and return air respectively.

The utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Embodiment one

Referring to Fig. 3, the temperature and humidity separately controlled air conditioner unit in this embodiment includes a blower 5 arranged downstream of the air duct, and the upstream of the air duct includes a fresh air passage and a return air passage, and a dehumidifying surface cooler 3 is arranged in the fresh air passage. The air inlet of the fresh air channel is provided with a fresh air valve 7. A temperature-regulating surface cooler 4 is arranged in the return air passage, and a return air valve 8 is arranged at the air inlet of the return air passage. Wherein, the refrigerants of the dehumidifying surface cooler 3 and the temperature regulating surface cooler 4 are provided by external cooling sources. All the airflow passing through the air conditioning unit is divided into two streams, wherein, the dehumidified airflow (fresh air or part of the return air as required) enters the fresh air channel and passes through the dehumidifying surface cooler 3 to achieve cooling and deep dehumidification; the other airflow (all or Most of the return air) enters the return air channel and is cooled by the temperature-regulating surface cooler 4, and then the two air streams converge in the middle of the air duct and complete the processing functions undertaken by other equipment, and are sent into the room by the blower 5.

The temperature and humidity separate control type air conditioner unit in this embodiment can achieve the purpose of controlling the air supply humidity (that is, absolute humidity) of the unit and controlling the indoor relative humidity by adjusting the refrigerant flow rate of the dehumidification surface cooler 3; 4, the refrigerant flow adjustment can control the air supply temperature of the unit, so as to realize the control and adjustment of the indoor temperature.

Embodiment two

Referring to Fig. 4, the temperature and humidity separate control type air conditioner unit in the present embodiment includes the blower fan 5 that is arranged on the downstream of the air duct, and the upstream of the air duct includes a fresh air passage and a return air passage (wherein the fresh air passage of the unit shown in Fig. 5 is superimposed An independent casing on the return air passage, and is connected with the return air passage by the air outlet), a dehumidification surface cooler 3 is provided in the fresh air passage, and a fresh air valve 7 is provided at the air inlet of the fresh air passage. A temperature-regulating surface cooler 4 is provided in the return air passage, and the return air passage is provided with a first return air inlet and a second return air inlet, wherein a return air valve 8 is arranged at the second return air inlet, and in the return air passage A return fan 6 is also provided, and the return fan 6 is arranged between the first return air inlet and the second return air inlet. An air outlet is also provided in the air return channel, and an air outlet valve 9 is arranged at the air outlet. The return air entering from the first return air inlet, under the action of the return fan 6, most of it passes through the return air valve of the second return air inlet and flows through the temperature-adjusting surface cooler 4 for temperature treatment, and a small part passes through the air exhaust port Exhaust valve exhaust to the outside. The upstream of the fresh air passage is connected or separated from the upstream of the return air passage through a bypass valve 10 .

Wherein, the refrigerants of the dehumidifying surface cooler 3 and the temperature regulating surface cooler 4 are provided by external cooling sources. The whole air flow passing through the air conditioning unit is divided into two streams, wherein, the dehumidified air stream (fresh air or mixed with part of the return air as required) enters the fresh air channel from the fresh air valve 7 and passes through the dehumidifying surface cooler 3 to realize cooling and deep dehumidification; the other stream The air flow (all or most of the return air) enters the return air channel from the first return air inlet, and part of it passes through the return air valve 8 at the second return air inlet, and then is cooled by the temperature-adjusting surface cooler 4, and the other part passes through the exhaust air The air valve 9 is discharged to the outside; then, the two streams respectively processed by the dehumidifying surface cooler 3 and the temperature regulating surface cooler 4 merge and complete the processing functions undertaken by other equipment, and then are sent into the room by the blower 5 .

The temperature and humidity separate control type air conditioner unit in this embodiment generally operates according to the minimum fresh air volume in summer and winter. At this time, the fresh air valve 7 is opened to the minimum opening, and the bypass ventilation valve 10 is closed. After passing through the dehumidifier surface cooler 3; when the transitional season is operated by fresh air or variable fresh air volume, the bypass ventilation valve 10 is opened, the upstream of the fresh air passage is connected with the upstream of the return air passage, and the fresh air enters the fresh air passage from the fresh air valve 7 and then partially enters The return air passage allows the fresh air to pass through the dehumidifying surface cooler 3 and the temperature-adjusting surface cooler 4 at the same time, and the fresh air ratio can be jointly adjusted by the fresh air valve 7 , the return air valve 8 and the exhaust valve 9 .

Embodiment Three

Referring to Fig. 5 , the temperature and humidity separately controlled air conditioner unit in this embodiment includes a blower 5 arranged downstream of the air duct, and the upstream of the air duct includes a fresh air passage and a return air passage, and the fresh air passage is one arranged above the return air passage. The independent cavity is provided with a dehumidifying surface cooler 3 in the fresh air passage, and two air inlets are arranged in the fresh air passage, one air inlet is provided with a fresh air valve 7, and the other air inlet is provided with a fresh air bypass valve 10. A temperature-regulating surface cooler 4 is provided in the return air passage, and the return air passage is provided with a first return air inlet and a second return air inlet, wherein a return air valve 8 is arranged at the second return air inlet, and in the return air passage A return fan 6 is also provided, and the return fan 6 is arranged between the first return air inlet and the second return air inlet. An air outlet is also provided in the air return channel, and an air outlet valve 9 is arranged at the air outlet. The return air entering from the first return air inlet, under the action of the return fan 6, most of it passes through the return air valve 8 of the second return air inlet and flows through the temperature-adjusting surface cooler 4 for temperature treatment, and a small part passes through the exhaust air The exhaust valve 9 at the mouth is discharged to the outside. The upstream of the fresh air channel and the upstream of the return air channel are connected through a vent 11 .

Wherein, the refrigerants of the dehumidifying surface cooler 3 and the temperature regulating surface cooler 4 are provided by external cooling sources. The whole air flow passing through the air conditioning unit is divided into two streams, wherein, the dehumidified air stream (fresh air or mixed with part of the return air as required) enters the fresh air channel from the fresh air valve 7 and passes through the dehumidifying surface cooler 3 to realize cooling and deep dehumidification; the other stream The air flow (all or most of the return air) enters the return air channel from the first return air inlet, and part of it passes through the return air valve 8 at the second return air inlet, and then is cooled by the temperature-adjusting surface cooler 4, and the other part passes through the exhaust air The air valve 9 is discharged to the outside; then, the two streams respectively processed by the dehumidifying surface cooler 3 and the temperature regulating surface cooler 4 merge and complete the processing functions undertaken by other equipment, and then are sent into the room by the blower 5 .

The temperature and humidity separate control type air conditioner unit in this embodiment generally operates according to the minimum fresh air volume in summer and winter. At this time, the fresh air valve 7 is opened to the minimum opening, and the bypass ventilation valve 10 is closed. After passing through the dehumidification surface cooler 3; when the transition season is operated by fresh air or variable fresh air volume, the bypass ventilation valve 10 is opened, and the fresh air enters the fresh air passage from the bypass ventilation valve 10 and then directly enters the return air passage through the vent 11, and then goes through the temperature adjustment The surface cooler 4 handles, and the fresh air ratio can be jointly adjusted through the bypass air valve 10, the return air valve 8 and the exhaust air valve 9.

In the temperature and humidity separate control air conditioner in the utility model, the unit can realize independent adjustment and control of air temperature and relative humidity through the setting of two parallel dehumidification surface coolers and temperature regulation surface coolers, which can completely solve the existing problems. The problem of energy waste caused by reheating of air-conditioning units in summer greatly reduces energy consumption.

The above are only preferred implementations of the present utility model. It should be pointed out that the above-mentioned preferred implementations should not be regarded as limitations on the present utility model, and the protection scope of the present utility model should be based on the scope defined by the claims. For those skilled in the art, without departing from the spirit and scope of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims (9)

1. A temperature-humidity separate control type air conditioning unit, comprising a blower fan arranged at the downstream of the air duct, the upstream of the air duct comprises a fresh air passage and a return air passage, it is characterized in that a dehumidifying surface cooler is provided in the fresh air passage A temperature-regulating surface cooler is provided in the return air passage, and the temperature-regulating surface cooler is connected in parallel with the dehumidifying surface cooler. 2 . The air-conditioning unit with separate temperature and humidity control according to claim 1 , wherein the dehumidification surface cooler and temperature-regulating surface cooler are cold water coils or direct evaporative cooling coils. 3 . The temperature and humidity separately controlled air conditioner unit according to claim 1 , wherein a fresh air valve is provided upstream of the fresh air channel, and a return air valve is provided upstream of the return air channel. 4 . 4. The temperature and humidity separately controlled air conditioner unit according to claim 3, further comprising a return fan, and the return fan is arranged upstream of the return air passage. 5. The air conditioner unit with separate temperature and humidity control according to claim 4, characterized in that, the return air passage is separated from or communicated with the fresh air passage by a bypass valve. 6. The air-conditioning unit with separate temperature and humidity control according to claim 5, characterized in that, the return air passage is provided with a first return air inlet and a second return air inlet, and the return air valve is arranged at the second return air inlet. Air inlet; the return fan is arranged between the first return air inlet and the second return air inlet. 7 . The temperature and humidity separately controlled air conditioner unit according to claim 3 , wherein an air exhaust port is provided on the return air passage, and an air exhaust valve is arranged at the air exhaust port. 8 . 8. The temperature and humidity separately controlled air conditioner unit according to claim 1, wherein a humidifier is further provided downstream of the air duct. 9. The temperature and humidity separately controlled air conditioner unit according to claim 1, characterized in that, the dehumidification surface cooler and the temperature-adjusting surface cooler are arranged up and down or left and right.

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