CN218936478U

CN218936478U - Dehumidification air conditioning system based on electronic expansion valve

Info

Publication number: CN218936478U
Application number: CN202222022279.6U
Authority: CN
Inventors: 许辉; 徐珊; 李猛
Original assignee: Yimikang Technology Group Co ltd
Current assignee: Yimikang Technology Group Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2023-04-28
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a dehumidifying air-conditioning system based on an electronic expansion valve, which comprises an electronic expansion valve driving plate, a first electronic expansion valve, a second electronic expansion valve, an air suction temperature sensor I, an air suction temperature sensor II, an evaporator I, an evaporator II, an air suction pressure sensor and a fan. The utility model belongs to the technical field of dehumidifying air-conditioning systems, and particularly provides a dehumidifying air-conditioning system based on an electronic expansion valve, which adopts two groups of electronic expansion valves, and turns off one electronic expansion valve to reduce heat exchange area during dehumidification so as to improve the performance of an air conditioner.

Description

Dehumidification air conditioning system based on electronic expansion valve

Technical Field

The utility model belongs to the technical field of dehumidifying air-conditioning systems, and particularly relates to a dehumidifying air-conditioning system based on an electronic expansion valve.

Background

In an air conditioning system having a dehumidifying operation function, an indoor heat exchanger is generally constituted by a first heat exchanger and a second heat exchanger, and a dehumidifying electronic expansion valve is provided between the two heat exchangers, and the dehumidifying electronic expansion valve is fully opened during normal operation of the system, so that the two heat exchangers function as a unit, but there is a large flow resistance after the electronic expansion valve is fully opened, that is, there is a large pressure loss during normal operation of the air conditioning system, and the performance of the air conditioner is greatly affected.

In summary, dehumidification is required in the low-load state of the unit in the operation of the air conditioner in the machine room, that is, the heat exchange area of the evaporator needs to be reduced in dehumidification.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides a dehumidifying air-conditioning system based on the electronic expansion valves, which adopts two groups of electronic expansion valves, and turns off one electronic expansion valve to reduce the heat exchange area during dehumidification, thereby being convenient for improving the performance of an air conditioner.

The technical scheme adopted by the utility model is as follows: the utility model discloses a dehumidifying air-conditioning system based on an electronic expansion valve, which comprises an indoor unit and an outdoor unit, wherein the indoor unit comprises an electronic expansion valve driving plate, a first electronic expansion valve, a second electronic expansion valve, an air suction temperature sensor I, an air suction temperature sensor II, an evaporator I, an evaporator II, an air suction pressure sensor and a fan, the electronic expansion valve driving plate is connected with the first electronic expansion valve, the second electronic expansion valve, the air suction temperature sensor I, the air suction temperature sensor II and the air suction pressure sensor,

the evaporator I and the evaporator II belong to heat exchange components of refrigeration cycle and are used for absorbing indoor environment heat and reducing indoor environment temperature;

the first air suction temperature sensor and the second air suction temperature sensor are respectively used for collecting air suction temperature data of the first outlet and the second outlet of the evaporator;

the air suction pressure sensor is used for collecting air suction pressure data after mixing at the outlet of the first evaporator and the outlet of the second evaporator;

the electronic expansion valve driving plate is used for collecting the data of the suction temperature and the data of the suction pressure, and sending out instructions to control the actions of the first electronic expansion valve and the second electronic expansion valve;

the first electronic expansion valve and the second electronic expansion valve act according to the instruction of the electronic expansion valve driving plate, and the data of the air suction temperature and the air suction pressure are changed;

the fan is used for providing power for indoor air flow, and the variable voltage provides circulating air quantity for heat exchange of the first evaporator and the second evaporator.

By adopting the scheme, the beneficial effects obtained by the utility model are as follows: according to the dehumidifying air-conditioning system based on the electronic expansion valve, two groups of electronic expansion valves are adopted in the system, and one electronic expansion valve is turned off during dehumidification, so that the heat exchange area is reduced.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a dehumidifying air-conditioning system based on an electronic expansion valve according to the present utility model.

Wherein, 1, an electronic expansion valve driving plate, 2-1, a first electronic expansion valve, 2-2, a second electronic expansion valve, 3-1, an air suction temperature sensor I, 3-2 parts of an air suction temperature sensor, 4-1 parts of an evaporator I, 4-2 parts of an evaporator II, 5 parts of an air suction pressure sensor, 6 parts of a fan.

In fig. 1, the inside of the dashed frame is a system composition diagram of the present embodiment, and the part outside the dashed frame is an outdoor unit in the prior art.

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in FIG. 1, the dehumidifying air-conditioning system based on the electronic expansion valve comprises an electronic expansion valve driving plate 1, a first electronic expansion valve 2-1, a second electronic expansion valve 2-2, an air suction temperature sensor 3-2-3-1, an air suction temperature sensor 3-2, an evaporator-4-1, an evaporator-4-2, an air suction pressure sensor 5 and a fan 6.

The electronic expansion valve driving plate 1 is connected with a first electronic expansion valve 2-1, a second electronic expansion valve 2-2, an air suction temperature sensor 3-2I 3-1, an air suction temperature sensor 3-2 II and an air suction pressure sensor 5, and the evaporator I4-1 and the evaporator II 4-2 belong to heat exchange components of refrigeration circulation and are used for absorbing indoor environment heat and reducing indoor environment temperature;

the air suction temperature sensor 3-2 is respectively used for collecting air suction temperature data of the first evaporator 4-1 and the second evaporator outlet;

in the scheme, the first evaporator 4-1 and the second evaporator 4-2 are two parts of the evaporator, and the suction pressure sensor 5 is used for collecting suction pressure data after the outlets of the first evaporator 4-1 and the second evaporator 4-2 are mixed;

the electronic expansion valve driving plate 1 is used for collecting the data of the suction temperature and the data of the suction pressure, and sending out instructions to control the actions of the first electronic expansion valve 2-1 and the second electronic expansion valve 2-2;

the first electronic expansion valve 2-1 and the second electronic expansion valve 2-2 act according to the instruction of the electronic expansion valve driving plate 1 to change the air suction temperature and air suction pressure data;

the fan 6 is used for providing power for indoor air flow, and the variable voltage provides circulating air quantity for heat exchange of the first evaporator 4-1 and the second evaporator 4-2.

Before use, parameters are set, including: target superheat Tsh (°c), flow balance parameter N.

When the electronic expansion valve is specifically used, the air suction temperature sensors 3-2A 3-1 and 3-2 are respectively used for collecting air suction temperature data of the first evaporator 4-1 and the second evaporator, the air suction temperatures are respectively T (3-1) (DEG C) and T (3-2) (DEG C), the air suction pressure sensor 5 is used for collecting air suction pressure data after the first evaporator 4-1 and the second evaporator 4-2 are mixed, the air suction pressure is P (5) (Bar), and after the electronic expansion valve driving plate 1 collects the air suction temperature data and the air suction pressure, the air suction temperature data and the air suction pressure are calculated according to the air suction temperature with smaller temperature, and the calculated parameters are as follows: an opening K (2-1) and an opening K (2-2).

In the embodiment, the temperature of T (3-1) is smaller as an example. The calculation formula is the same as the control method of the conventional electronic expansion valve.

K (2-1) is calculated from T (3-1) and P (5), K (2-2) =K (2-1) +N.

Selection of N flow balance data: n ranges from-50 to 50, N is dynamically regulated from 0 after the electronic expansion valve is opened for 60s, and +1 is carried out every 10s when T2-T1 is more than 2; when T2-T1< -2, -1 is performed every 10 s: when 2> =t2-t1 > = -2, N is unchanged.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides a dehumidification air conditioning system based on electronic expansion valve, includes indoor unit and outdoor unit, the outdoor unit comprises condenser and outdoor fan, its characterized in that: the indoor unit comprises an electronic expansion valve driving plate, a first electronic expansion valve, a second electronic expansion valve, an air suction temperature sensor I, an air suction temperature sensor II, an evaporator I, an evaporator II, an air suction pressure sensor and a fan, wherein the electronic expansion valve driving plate is connected with the first electronic expansion valve, the second electronic expansion valve, the air suction temperature sensor I, the air suction temperature sensor II and the air suction pressure sensor, the air suction temperature sensor I and the air suction temperature sensor II are respectively used for collecting air suction temperature data of outlets of the evaporator I and the evaporator II, the air suction pressure sensor is used for collecting air suction pressure data after the outlets of the evaporator I and the evaporator II are mixed, the electronic expansion valve driving plate is used for collecting the air suction temperature data and the air suction pressure data, sending out instructions to control the actions of the first electronic expansion valve and the second electronic expansion valve, and the fan is used for providing power for indoor air flow, and the changing voltage is used for providing circulating air for heat exchange of the evaporator I and the evaporator II.

2. The dehumidification air conditioning system based on an electronic expansion valve according to claim 1, wherein: the first electronic expansion valve and the second electronic expansion valve act according to the instruction of the electronic expansion valve driving plate, and the air suction temperature and air suction pressure data are changed.

3. The dehumidification air conditioning system based on an electronic expansion valve according to claim 1, wherein: the first evaporator and the second evaporator are used for absorbing indoor environment heat and reducing indoor environment temperature.