CN218269292U

CN218269292U - Air conditioning unit system with dehumidification function

Info

Publication number: CN218269292U
Application number: CN202222022278.1U
Authority: CN
Inventors: 许辉; 王铭; 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: 2023-01-10
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses an air conditioning unit system with dehumidification function, which comprises an indoor unit, an outdoor unit and an indoor and outdoor unit connecting pipeline, wherein the indoor and outdoor unit connecting pipeline is communicated between the indoor unit and the outdoor unit; the indoor unit comprises a compressor, a first electronic expansion valve, a second electronic expansion valve, a first evaporator, a second evaporator, a return air temperature and humidity sensor, a fan, an air supply temperature sensor, an air suction pressure sensor, an air suction temperature sensor I, an air suction temperature sensor II and a control system. The utility model belongs to the technical field of refrigeration computer lab air conditioning system, specifically provide an effect that can realize quick dehumidification, and under inverter compressor's effect, can carry out under different loads, can keep the operational environment's of constant temperature and humidity air conditioning unit system that has a dehumidification function.

Description

Air conditioning unit system with dehumidification function

Technical Field

The utility model belongs to the technical field of refrigeration computer lab air conditioning system, specifically indicate an air conditioning unit system with dehumidification function.

Background

Dehumidification is one of the main functions of an air conditioning system, and in order to ensure a certain relative humidity in a room and ensure body feeling comfort, excess water vapor in air needs to be removed; and when the humidity is high, serious corrosion is caused to buildings and decorations, so that dehumidification of indoor air is very important.

In the prior art, the operating environment of the air conditioner in the machine room not only requires constant temperature and constant humidity, but also has strict requirements on dehumidification control, and the dehumidification is required to be performed quickly and under different loads.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model provides a can realize quick dehumidification's effect, and under inverter compressor's effect, can carry out under different loads, can keep the operational environment's of constant temperature and humidity air conditioning unit system that has a dehumidification function.

The utility model adopts the following technical scheme: the utility model relates to an air conditioning unit system with dehumidification function, which comprises a refrigeration cycle composed of an indoor unit, an outdoor unit and an indoor and outdoor unit connecting pipeline, wherein the indoor and outdoor unit connecting pipeline is communicated and arranged between the indoor unit and the outdoor unit; the indoor unit consists of a compressor, a first electronic expansion valve, a second electronic expansion valve, a first evaporator, a second evaporator, a return air temperature and humidity sensor, a fan, an air supply temperature sensor, an air suction pressure sensor, an air suction temperature sensor and a control system,

the first electronic expansion valve, the second electronic expansion valve, the return air temperature and humidity sensor, the air supply temperature sensor, the air suction pressure sensor, the air suction temperature sensor I and the air suction temperature sensor II are all connected with the control system,

the first evaporator and the second evaporator are heat exchange components of a refrigeration cycle, and are used for absorbing heat of indoor environment and reducing indoor environment temperature;

the first electronic expansion valve and the second electronic expansion valve are throttling components of refrigeration cycle and are used for controlling the flow rate and the low-pressure of a refrigerant, the first electronic expansion valve is used for controlling the first evaporator, and the second electronic expansion valve is used for controlling the second evaporator;

the air return temperature and humidity sensor is used for detecting the indoor air return temperature, and the air supply temperature sensor is used for detecting the air supply temperature of the indoor unit;

the first air suction temperature sensor and the second air suction temperature sensor are used for detecting the outlet temperatures of the first evaporator and the second evaporator respectively, air suction pipelines are arranged between the first evaporator and the second evaporator and the compressor in a communicating mode, the air suction pressure sensor is arranged on the air suction pipeline and used for detecting pressure data of the air suction pipelines, and the air suction pressure sensor is used for providing control parameters for the first electronic expansion valve and the second electronic expansion valve;

the control system is used for receiving parameters of outlet temperature data, pressure data, return air temperature and air supply temperature and sending out normal operation of all parts for refrigeration control.

Further, the outdoor unit is composed of a condenser and an outdoor fan, and the outdoor unit is a heat exchange component in a refrigeration cycle and used for dissipating heat to the environment.

Preferably, the compressor is an inverter compressor, the inverter compressor is a power supply part of the refrigeration cycle, and the frequency change controls the temperature of the supplied air.

In a preferred scheme, the fan is an EC fan.

Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: the air conditioning unit system with the dehumidification function can achieve the effect of rapid dehumidification, can be executed under different loads under the action of the variable frequency compressor, and can keep a constant-temperature and constant-humidity running environment.

Drawings

Fig. 1 is a schematic diagram of an overall structure of an air conditioning unit system with dehumidification function according to the present invention.

The system comprises a variable frequency compressor 1, an outdoor unit 2, a first electronic expansion valve 3-1, a second electronic expansion valve 3-2, a first evaporator 4-1, a first evaporator 4-2, a second evaporator 5, a return air temperature and humidity sensor 6, a fan 7, an air supply temperature sensor 8, an air suction pressure sensor 9-1, an air suction temperature sensor I, an air suction temperature sensor 9-2, an air suction temperature sensor II, an air suction temperature sensor 10, a control system 11 and an internal and external unit connecting pipeline.

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the present invention relates to an air conditioning unit system with dehumidification function, which comprises a refrigeration cycle composed of an indoor unit, an outdoor unit 2, and an indoor and outdoor unit connecting pipeline 11, wherein the indoor and outdoor unit connecting pipeline 11 is communicated between the indoor unit and the outdoor unit 2; the indoor unit comprises a compressor, a first electronic expansion valve 3-1, a second electronic expansion valve 3-2, a first evaporator 4-1, a second evaporator 4-2, a return air temperature and humidity sensor 5, a fan 6, an air supply temperature sensor 7, an air suction pressure sensor 8, a first air suction temperature sensor 9-1, a second air suction temperature sensor 9-2 and a control system 10, wherein the first electronic expansion valve 3-1, the second electronic expansion valve 3-2, the return air temperature and humidity sensor 5, the air supply temperature sensor 7, the air suction pressure sensor 8, the first air suction temperature sensor 9-1 and the second air suction temperature sensor 9-2 are all connected with the control system 10, the first evaporator 4-1 and the second evaporator 4-2 are heat exchange parts of a refrigeration cycle, the first evaporator 4-1 and the second evaporator 4-2 are two parts of the evaporator, and the first evaporator 4-1 and the second evaporator 4-2 are used for absorbing heat of indoor environment and reducing indoor environment temperature; the first electronic expansion valve 3-1 and the second electronic expansion valve 3-2 are throttling components of refrigeration cycle and are used for controlling the flow rate and the low-pressure of a refrigerant, the first electronic expansion valve 3-1 is used for controlling the first evaporator 4-1, and the second electronic expansion valve 3-2 is used for controlling the second evaporator 4-2; the return air temperature and humidity sensor 5 is used for detecting the indoor return air temperature, and the air supply temperature sensor 7 is used for detecting the air supply temperature of the indoor unit; the first air suction temperature sensor 9-1 and the second air suction temperature sensor 9-2 are used for respectively detecting the outlet temperatures of the first evaporator 4-1 and the second evaporator 4-2, air suction pipelines are communicated among the first evaporator 4-1, the second evaporator 4-2 and the compressor, an air suction pressure sensor 8 is arranged on the air suction pipeline, the air suction pressure sensor 8 is used for detecting pressure data of the air suction pipeline, and the air suction pressure sensor 8 is used for providing control parameters for the first electronic expansion valve 3-1 and the second electronic expansion valve 3-2; the control system 10 is used for receiving parameters of outlet temperature data, pressure data, return air temperature and air supply temperature and sending out refrigeration to control normal operation of each part.

Preferably, the outdoor unit 2 is composed of a condenser and an outdoor fan, and the outdoor unit 2 is a heat exchange member in a refrigeration cycle for radiating heat to the environment. The compressor is the inverter compressor 1, and the inverter compressor 1 provides the part for refrigeration cycle's power, and the temperature of air supply is controlled in the frequency variation. The fan 6 is an EC fan.

Setting parameters: the method comprises the steps of target air supply temperature Tsb (DEG C), target return air temperature Thb (DEG C), and target return air humidity RHb (RH%), entering dehumidification air supply temperature difference delta T (DEG C), returning air target temperature difference delta T (DEG C), compressor dehumidification limiting frequency Px (Hz), target air suction pressure Bb (Bar), and target evaporation temperature ETb (DEG C).

Detecting parameters: the air supply temperature Tsd (DEG C), the return air temperature Th (DEG C), the return air humidity RH (RH%), the compressor frequency Pd (Hz), the suction temperature Tx (DEG C) and the suction pressure Bx (Bar).

Calculating parameters: the operation frequency P (Hz), the operation voltage V (V), the opening K of the electronic expansion valve and the evaporation temperature ET (DEG C) of the compressor.

When in specific use, the method comprises the following steps:

the method comprises the following steps: and detecting the return air humidity RH, comparing the target return air humidity RHb, and when the dehumidification requirement exists and the air supply temperature Tsd is less than or equal to the target air supply temperature Tsb + delta T, enabling the system to enter a dehumidification mode.

Step two: if the frequency Pd of the compressor is more than Px, reducing the frequency of the compressor to Px by pressing the frequency reduction frequency of the compressor, and then entering the third step; if the frequency Pd of the compressor is less than or equal to Px, directly entering the third step; the frequency of the compressor in the dehumidification process always meets the condition that Pd is less than or equal to Px;

step three: the second electronic expansion valve 3-2 is closed, and the first electronic expansion valve 3-1 controls the opening K according to the parameters of the first air suction temperature sensor 9-1 and the air suction pressure sensor 8;

step four: the running frequency P of the compressor is adjusted according to the refrigeration requirement in the dehumidification process, but the frequency is reduced when the suction pressure Bx is less than or equal to Bb, the frequency is increased when the suction pressure Bx is more than Bb +2, and the frequency is adjusted according to the refrigeration requirement when Bb is more than Bx and less than or equal to Bb + 2; or the running frequency P of the compressor is adjusted according to the refrigeration requirement in the dehumidification process, but the frequency is reduced when the evaporation temperature ET (DEG C) is less than or equal to ETb, the frequency is increased when the suction pressure ET is more than ETb +2, and the frequency is adjusted according to the refrigeration requirement when the ET is more than or equal to ETb + 2;

step five: performing PID control on fan operating voltage V (V) according to a return air target temperature difference delta T (DEG C) in the dehumidification process;

step six: and when the condition that the return air humidity RHb has no dehumidification requirement or the air supply temperature Tsd is larger than the target air supply temperature Tsb + delta T is detected, the dehumidification mode is exited and the normal logic operation is carried out.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides an air conditioning unit system with dehumidification function, includes the refrigeration cycle who constitutes by indoor set, off-premises station and indoor outdoor machine connecting line, indoor outdoor machine connecting line intercommunication locates between indoor set and the off-premises station, its characterized in that: the indoor unit comprises a compressor, a first electronic expansion valve, a second electronic expansion valve, a first evaporator, a second evaporator, a return air temperature and humidity sensor, a fan, an air supply temperature sensor, an air suction pressure sensor, a first air suction temperature sensor, a second air suction temperature sensor and a control system, wherein the first electronic expansion valve, the second electronic expansion valve, the return air temperature and humidity sensor, the air supply temperature sensor, the air suction pressure sensor, the first air suction temperature sensor and the second air suction temperature sensor are all connected with the control system; the first electronic expansion valve and the second electronic expansion valve are throttling components of refrigeration cycle and are used for controlling the flow rate and the low-pressure of a refrigerant, the first electronic expansion valve is used for controlling the first evaporator, and the second electronic expansion valve is used for controlling the second evaporator; the air return temperature and humidity sensor is used for detecting the indoor air return temperature, and the air supply temperature sensor is used for detecting the air supply temperature of the indoor unit; the first air suction temperature sensor and the second air suction temperature sensor are used for detecting the outlet temperatures of the first evaporator and the second evaporator respectively, air suction pipelines are arranged between the first evaporator and the second evaporator and the compressor in a communicating mode, the air suction pressure sensor is arranged on the air suction pipeline and used for detecting pressure data of the air suction pipelines, and the air suction pressure sensor is used for providing control parameters for the first electronic expansion valve and the second electronic expansion valve; the control system is used for receiving parameters of outlet temperature data, pressure data, return air temperature and air supply temperature and sending out normal operation of all parts for refrigeration control.

2. An air conditioning unit system with dehumidifying function according to claim 1, wherein: the outdoor unit is composed of a condenser and an outdoor fan, and is a heat exchange component in a refrigeration cycle and used for dissipating heat to the environment.

3. An air conditioning unit system with dehumidifying function according to claim 1, wherein: the compressor is a variable frequency compressor, the variable frequency compressor provides a component for power of a refrigeration cycle, and the temperature of supplied air is controlled through frequency change.

4. An air conditioning unit system with dehumidifying function according to claim 1, wherein: the fan is an EC fan.