CN203687250U - Dew-point type and direct-expansion type combined air conditioning unit - Google Patents

Abstract

In the dew point air-conditioning unit combined with the direct expansion type disclosed in the utility model, air inlets and air outlets are respectively arranged on the opposite side walls of the unit shell, and filters, external press-in Type single fan, dew point indirect evaporative cooler and air-cooled direct expander evaporator, the upper part of the dew point indirect evaporative cooler and evaporator is also provided with a closed cavity, the cavity, and dew point indirect evaporative A condenser is installed corresponding to the cooler, and a compressor is installed corresponding to the evaporator. The evaporator, expansion valve, condenser and compressor are connected in sequence to form a closed circuit. The top wall of the unit housing corresponding to the condenser is provided with an exhaust mouth. The air-conditioning unit of the utility model is equipped with a dew-point indirect evaporative cooler and an air-cooled direct expansion unit, which not only realizes year-round cooling, but also saves floor space and further achieves the purpose of energy saving.

Description

Combined dew point and direct expansion air conditioning units

technical field

The utility model belongs to the technical field of air-conditioning and refrigeration equipment, in particular to an air-conditioning unit combining a dew point indirect evaporative cooler and a direct expansion indirect evaporative cooler. the

Background technique

Nowadays, evaporative cooling air-conditioning technology has been popularized and applied in a large number, but there are still certain problems, that is, to realize the dehumidification function, the water temperature needs to be lower than the dew point temperature of the air, which will greatly limit the use of evaporative cooling air-conditioning in medium humidity and high humidity. Regional applications; and the combination of evaporative cooling and mechanical refrigeration can meet the air conditioning requirements of various climate regions. the

Utility model content

The purpose of this utility model is to provide an air conditioning unit combining dew point type and direct expansion type. By configuring dew point type indirect evaporative cooler and air-cooled direct expansion type unit, not only the year-round cooling is realized, but also energy saving can be further achieved the goal of. the

The technical scheme adopted by the utility model is that the dew point air-conditioning unit combined with the direct expansion type includes an organic unit shell, and the opposite side walls of the unit shell are respectively provided with an air inlet and an air supply port, and the inside of the unit shell is pressed into In the wind direction, there are filter, external press-in single fan, dew point indirect evaporative cooler and air-cooled direct expander evaporator. In the cavity, a condenser is installed corresponding to the dew point indirect evaporative cooler, and a compressor is installed corresponding to the evaporator. The evaporator, expansion valve, condenser and compressor are connected in sequence to form a closed circuit. The condenser An air outlet is provided on the top wall of the corresponding unit housing. the

The utility model is also characterized in that

The filter is a primary filter, a medium filter, a sub high filter or a high efficiency filter. the

The dew point indirect evaporative cooler includes a core body, the upper part of the core body is provided with a water distributor, the lower part of the core body is provided with a circulating water tank, and a water quality filter is installed in the circulating water tank, and the circulating water tank is connected to the water distributor through a water supply pipe. A circulating water pump is arranged on the pipe. the

A single row or multiple rows of holes are arranged on the core body diagonally from top to bottom according to the air inlet direction. the

The beneficial effects of the utility model are:

1) The air-conditioning unit combined with dew point type and direct expansion type of the present utility model adopts dew point type indirect evaporative cooler for precooling, reduces the temperature of primary and secondary air, increases heat transfer with refrigerant, and improves The heat dissipation efficiency of the condenser and the heat absorption efficiency of the evaporator;

2) In the combined dew point type and direct expansion type air conditioning unit of the present utility model, the dew point type indirect evaporative cooler and the air-cooled condenser have an upper and lower integrated structure, and the evaporator is directly located in the air conditioning unit shell, so that the air The cold direct expansion unit avoids setting up a special chilled water system;

3) The combined dew point type and direct expansion type air conditioning unit of the present utility model adopts a single fan press-in type, which further realizes the purpose of energy saving. the

Description of drawings

Fig. 1 is the structural representation of the air-conditioning unit of the utility model dew point type and direct expansion joint combination;

FIG. 2 is a top view combined with FIG. 1 . the

In the figure, 1. Air inlet, 2. Filter, 3. External press-in single fan, 4. Circulating water pump, 5. Dew point indirect evaporative cooler, 6. Water quality filter, 7. Core, 8. Water distributor, 9. Circulating water tank, 10. Evaporator, 11. Air outlet, 12. Compressor, 13. Expansion valve, 14. Condenser, 15. Air outlet. the

Detailed ways

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

The dew point and direct expansion combined air conditioning unit of the utility model has a structure as shown in Figure 1 and Figure 2, including an organic unit casing, and the opposite side walls of the unit casing are respectively provided with an air inlet 1 and an air supply port 11. According to the direction of air intake, filter 2, external press-in single fan 3, dew point indirect evaporative cooler 5 and evaporator 10 of air-cooled direct expander are arranged in the unit shell, and dew point indirect evaporative cooler 5 and the upper part of the evaporator 10 is also provided with a closed cavity, in which a condenser 14 is arranged corresponding to the dew point indirect evaporative cooler 5, and a compressor 12 is arranged corresponding to the evaporator 10, and the evaporator 10. The expansion valve 13, the condenser 14 and the compressor 12 are sequentially connected to form a closed circuit, and the top wall of the unit housing corresponding to the condenser 14 is provided with an air outlet 15. the

Filter 2 is a primary filter, a medium filter, a sub-high filter or a high efficiency filter. the

The pipe network structure between the condenser 14, the compressor 12 and the evaporator 10 is:

The condenser 14 is connected to the evaporator ₁₀ through the water pipe G1, the water pipe _G2 of the evaporator 10 is connected to the compressor 12, the compressor 12 is connected to the condenser ₁₄ through the water pipe G3, and an expansion valve ₁₃ is arranged on the water pipe G1.

The dew point indirect evaporative cooler 5 includes a core body 7, a water distributor 8 is arranged between the upper part of the core body 7 and the condenser 14, a circulating water tank 9 is arranged at the lower part of the core body 7, and a water quality filter is arranged in the circulating water tank 9 6. The circulating water tank 9 is connected to the water distributor 8 through the water supply pipe, and the circulating water pump 4 is arranged on the water supply pipe. the

The core body 7 is provided with a single row or multiple rows of holes diagonally from top to bottom according to the air inlet direction. the

In the combined dew point and direct expansion air conditioning unit of the present utility model, the condenser 14 in the air-cooled direct expander is arranged above the dew point indirect evaporative cooler 5, and the evaporator in the air-cooled direct expander 10 is set on the right side of the dew point indirect evaporative cooler 5, while the compressor 12 in the air-cooled direct expander is set above the evaporator 10; wherein, the core component of the dew point indirect evaporative cooler 5 is the core 7, A water distributor 8 is arranged on the upper part of the core body 7, and a circulating water tank 9 is arranged on the lower part of the core body 7. The circulating water tank 9 is connected to the water distributor 8 through a water supply pipe, and a circulating water pump 4 is arranged on the water supply pipe. the

The combined dew point and direct expansion air conditioning unit of the utility model can realize two different operation modes according to different meteorological conditions and user requirements for temperature and humidity:

(1) Combined operation mode: The dew point indirect evaporative cooler 5 and the air-cooled direct expander are used for joint operation. The evaporator 10 is cooled to the point where the air supply state is reached. the

(2) Evaporative cooling operation mode: The dew point indirect evaporative cooler 5 is used to operate alone, cooling the supply air to the sub-humidity bulb temperature, and saving energy to the greatest extent. the

The working process of the stroke system of the combined air-conditioning unit of the dew point type and the direct expansion type of the utility model is as follows:

When the air conditioning unit is running, the external press-in single fan 3 and the circulating water pump 4, the outdoor fresh air passes through the air inlet 1 and the filter 2 in turn, and is sent to the dew point indirect evaporative cooler 5 by the external press-in single fan 3, After that, the air is divided into two parts. The primary air is pre-cooled through the dry channel of the inner core 7 of the dew point indirect evaporative cooler 5, then further cooled by the evaporator 10 of the direct expansion unit, and finally sent to the air conditioner through the air outlet 11. and the secondary air is pre-cooled through the wet channel of the inner core body 7 of the dew point indirect evaporative cooler 5, and the pre-cooled air passes through the condenser 14 and the air outlet 15 of the direct expansion unit, and finally is discharged from the air conditioning unit outside. the

The working process of the water system of the combined dew point type and direct expansion type air conditioning unit of the present utility model is as follows:

In the dew-point indirect evaporative cooler 5, the water in the circulating water tank 9 is treated by the water quality filter 6, and then sent to the water distributor 8 by the circulating water pump 4 to spray on the core 7 in the dew-point indirect evaporative cooler. Finally excess water gets back in the circulating water tank 9 under the effect of gravity, so circulates. the

The working process of the refrigerant system of the combined air-conditioning unit of the dew point type and the direct expansion type of the utility model is as follows:

When the air-cooled direct expander is in operation, the high-pressure steam discharged from the compressor 12 releases heat through the condenser 14 and condenses into a liquid, and the liquid refrigerant is throttled through the expansion valve 13 to reduce the pressure and temperature at the same time, and then enters the evaporator 10 , absorb the heat of the cooled air and evaporate into steam, and finally the steam enters the compressor 12 to continue compressing, repeating the cycle. the

Claims (4)

1. the air-conditioning unit that dew point formula is combined with direct-expansion-type, it is characterized in that, include machine unit shell, described machine unit shell is respectively arranged with air inlet (1) and air outlet (11) on relative two side, in described machine unit shell, be disposed with filter (2) by air intake direction, external forced single blower fan (3), the evaporimeter (10) of dew point formula indirect evaporation cooler (5) and air-cooled direct expansion device, the top of described dew point formula indirect evaporation cooler (5) and evaporimeter (10) is also provided with the cavity of a sealing, in this cavity, be provided with condenser (14) with dew point formula indirect evaporation cooler (5) corresponding position, be provided with compressor (12) with evaporimeter (10) corresponding position, described evaporimeter (10), expansion valve (13), condenser (14) and compressor (12) connect and compose closed-loop path successively, on the machine unit shell roof of described condenser (14) correspondence, be provided with exhaust outlet (15).

2. the air-conditioning unit that dew point formula according to claim 1 is combined with direct-expansion-type, is characterized in that, described filter (2) is roughing efficiency air filter, medium effeciency filter, inferior high efficiency filter or high efficiency particulate air filter.

3. the air-conditioning unit that dew point formula according to claim 1 is combined with direct-expansion-type, it is characterized in that, described dew point formula indirect evaporation cooler (5), include core body (7), described core body (7) top is provided with water-locator (8), described core body (7) bottom is provided with cyclic water tank (9), in described cyclic water tank (9), be provided with water filter (6), described cyclic water tank (9) is connected with described water-locator (8) by feed pipe, is provided with water circulating pump (4) on described feed pipe.

4. the air-conditioning unit that dew point formula according to claim 3 is combined with direct-expansion-type, is characterized in that, upper single row of holes or the many rounds of being provided with from top to bottom along diagonal angle by air intake direction of described core body (7).

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