CN217763705U

CN217763705U - Air conditioning system

Info

Publication number: CN217763705U
Application number: CN202221420020.0U
Authority: CN
Inventors: 李宏波; 陈旭峰; 李俏楠; 苏丽芸; 朱永康; 何浩权
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-11-08
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses an air conditioning system relates to the air conditioner field, has solved and has adopted the refrigeration dehumidification to cause the air conditioning system energy consumption high and the temperature after handling to cross lowly among the prior art to and adopt the electrical heating dehumidification to cause the high technical problem of energy consumption. The system comprises a tail end assembly, a refrigeration host, a chilled water circulation assembly, a first cooling water circulation assembly, a second cooling water circulation assembly, a heat exchange end and a first control valve, wherein the refrigeration host comprises an evaporator and a condenser, the first control valve is arranged on the first cooling water circulation flow path, and based on the difference value between the return air relative humidity monitored by the tail end assembly and the indoor preset relative humidity, the first control valve is in an opening state or a closing state and enables the first cooling water circulation flow path to be communicated or disconnected. The system can utilize the condensation heat discharged by the condenser to heat and dehumidify the air at the tail end, not only can reduce the air humidity, but also can fully utilize the condensation heat generated by the condenser, thereby saving the energy consumption.

Description

Air conditioning system

Technical Field

The utility model relates to an air conditioning technology field especially relates to an air conditioning system.

Background

For ships traveling in the sea, they are exposed to a high humidity environment for a long period of time. When the humidity requirement is met in a cabin, two dehumidification methods are generally adopted, namely refrigeration and dehumidification, in order to enable the air humidity to meet the requirement during dehumidification, the overall refrigeration capacity is large, the energy consumption of an air conditioning system is high, the temperature after treatment is possibly too low, and the phenomenon of condensation when the treated air enters a room can be caused; and secondly, electric heating dehumidification is adopted, the air humidity meets the requirement by adopting the electric heating mode, and the energy consumption of the electric heating is high.

In addition, in the existing air conditioning system for ships, the condenser discharges condensation heat in a heat exchange mode with seawater in the refrigeration process of the refrigeration main machine, and the energy is wasted due to direct loss of part of heat. Fig. 1 shows a conventional air conditioning system for a ship. As shown in fig. 1, the conventional air conditioning system for a ship includes a terminal assembly 100, a refrigerating main unit 200, a chilled water circulation assembly, a cooling water circulation assembly, and a heat exchanger 500, wherein the refrigerating main unit 200 includes an evaporator 201 and a condenser 202, and condensation heat of the condenser 202 is discharged by heat exchange with seawater at the heat exchanger 500.

The prior art discloses a double-condensation energy-saving independent combined type temperature and humidity adjusting air conditioning cabinet, the scheme can reduce the power consumption, but when the number of the air conditioning cabinets required in the actual use process is large, each air conditioning cabinet needs to be provided with an evaporator, an internal condenser, an external condenser and a compressor, so that the occupied area and the cost of the air conditioning cabinet are greatly increased; in addition, although the heating section is not needed in the scheme, the outlet air temperature is greatly reduced for achieving the purpose of dehumidification in the refrigeration process, which means that a large amount of energy is consumed by an air conditioning system.

Therefore, there is an urgent need for improvement of the air conditioning system for ships in the related art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air conditioning system has solved and has adopted the refrigeration dehumidification to cause the air conditioning system energy consumption height and the temperature after handling to cross low among the prior art to and adopt the electrical heating dehumidification to cause the high problem of energy consumption. The technical effects that the preferred technical scheme of the utility model can produce are explained in detail in the following.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model discloses air conditioning system includes terminal subassembly, refrigeration host computer, refrigerated water circulation subassembly, first cooling water circulation subassembly, second cooling water circulation subassembly and heat transfer end, wherein, the refrigeration host computer includes evaporimeter and condenser, the evaporimeter warp the refrigerated water circulation subassembly with terminal subassembly is connected and is formed the refrigerated water circulation flow path, the condenser warp first cooling water circulation subassembly with terminal subassembly is connected and is formed first cooling water circulation flow path, the condenser still warp second cooling water circulation subassembly with the heat transfer end is connected and is formed second cooling water circulation flow path, and air conditioning system still includes first control valve, first control valve set up in on the first cooling water circulation road, based on return air relative humidity and the indoor difference of predetermineeing relative humidity that terminal subassembly was monitored, first control valve is in the open mode or closed condition to make first cooling water circulation flow path intercommunication or disconnection.

According to a preferred embodiment, the first cooling water circulation module includes a first cooling water supply pipe, a first cooling water return pipe, and a cooling-side water pump, wherein both ends of the first cooling water supply pipe are connected to an outlet of the condenser and an inlet of the second surface cooler of the terminal module, respectively; two ends of the first cooling water return pipe are respectively connected with the outlet of the second surface air cooler and the inlet of the condenser; the cooling side water pump is disposed on the first cooling water supply pipe or the first cooling water return pipe.

According to a preferred embodiment, the heat exchange end comprises a heat exchanger and a heat exchange side circulation assembly, the condenser is connected with the heat exchanger through the second cooling water circulation assembly and forms a second cooling water circulation flow path, and the heat exchanger is further connected with a cooling medium through the heat exchange side circulation assembly and forms a cooling medium circulation flow path.

According to a preferred embodiment, the second cooling water circulation module includes a second cooling water supply pipe and a second cooling water return pipe, wherein both ends of the second cooling water supply pipe are connected to the outlet of the condenser and the first inlet of the heat exchanger, respectively; and two ends of the second cooling water return pipe are respectively connected with the first outlet of the heat exchanger and the inlet of the condenser.

According to a preferred embodiment, the heat exchange side circulation assembly includes a cooling medium water supply pipe, a cooling medium water return pipe, and a cooling medium side water pump, wherein both ends of the cooling medium water supply pipe are connected to the second inlet of the heat exchanger and the cooling medium, respectively; two ends of the cooling medium water return pipe are respectively connected with the second outlet of the heat exchanger and the cooling medium; the cooling medium side water pump is arranged on the cooling medium water supply pipe or the cooling medium water return pipe.

According to a preferred embodiment, the first control valve is disposed on the first cooling water supply pipe, or the first control valve is disposed at a joint of the first cooling water supply pipe and the second cooling water supply pipe, and the magnitude of the frequency of the cooling medium side water pump and the magnitude of the difference between the relative humidity of the return air monitored by the terminal assembly and the preset indoor relative humidity determine the magnitude of the opening of the first control valve; the difference value of the real-time return water temperature of the condenser and the preset return water temperature also determines the opening size of the first control valve and the frequency of the cooling medium side water pump.

According to a preferred embodiment, the chilled water circulation assembly includes a chilled water supply pipe, a chilled water return pipe, and a chilled side water pump, wherein both ends of the chilled water supply pipe are connected to an outlet of the evaporator and an inlet of the first surface cooler of the terminal assembly, respectively; two ends of the chilled water return pipe are respectively connected with an outlet of the first surface cooler and an inlet of the evaporator; the freezing side water pump is arranged on the freezing water supply pipe or the freezing water return pipe.

According to a preferred embodiment, the chilled water circulation module further comprises a second control valve, the second control valve is disposed on the chilled water supply pipe, and the opening and closing of the second control valve are related to the difference between the fresh air temperature monitored by the terminal module and the preset opening temperature value of the refrigeration host.

According to a preferred embodiment, the terminal assembly comprises an air mixing section, a filtering section, a first surface air cooler, a humidifying section, a fan, a second surface air cooler and an air supply section, wherein the air mixing section, the filtering section, the first surface air cooler, the humidifying section, the fan, the second surface air cooler and the air supply section are sequentially arranged at intervals, a fresh air inlet and an air return inlet are arranged at the air mixing section, and an air supply outlet is arranged at the air supply section.

According to a preferred embodiment, the terminal assembly further comprises a fresh air temperature and humidity sensor and a return air temperature and humidity sensor, wherein the fresh air temperature and humidity sensor is arranged at the fresh air inlet and used for detecting the temperature and the humidity of fresh air; the return air temperature and humidity sensor is arranged at the return air inlet and used for detecting the temperature and the humidity of return air.

The utility model provides an air conditioning system has following beneficial technological effect at least:

the utility model discloses air conditioning system, including terminal subassembly, refrigeration host computer, refrigerated water circulation subassembly, first cooling water circulation subassembly, second cooling water circulation subassembly, heat transfer end and first control flap, the refrigeration host computer includes evaporimeter and condenser, first control flap set up in on the first cooling water circulation route, based on the difference of return air relative humidity and indoor preset relative humidity that terminal subassembly was monitored, first control flap is in open mode or closed state, and make first cooling water circulation route intercommunication or disconnection, specifically, when terminal air needs to dehumidify, open first control flap and make first cooling water circulation route intercommunication, the condensation heat that can utilize the condenser to discharge dehumidifies for terminal air heating, not only can reduce air humidity, make indoor relative humidity reach indoor preset relative humidity, improve the travelling comfort of indoor environment, the condensation heat that still can make full use of the condenser production, energy saving, avoid the condensation heat direct discharge of condenser, this part of heat direct loss, cause the extravagant problem of the energy; when the tail end air does not need to be dehumidified, the first control valve is closed, the first cooling water circulation flow path is disconnected, and the condenser can discharge condensation heat through heat exchange with the heat exchange end; on the other hand, when utilizing condenser exhaust heat of condensation to terminal air heating dehumidification, it reduces to mean to carry out heat exchange exhaust heat of condensation through holding with the heat transfer to reduce the energy consumption in heat transfer end, make the utility model discloses air conditioning system's energy consumption further reduces.

Therefore, the air conditioning system of the utility model utilizes the condensation heat of the condenser to heat and dehumidify the air at the tail end, compared with the refrigeration and dehumidification in the prior art, the refrigeration effect of the tail end assembly can not be influenced, and the problems of high energy consumption of the air conditioning system and low temperature after treatment can be avoided; compared with the electric heating dehumidification in the prior art, the energy consumption of the air conditioning system can be reduced from two aspects of utilization of condensation heat and reduction of energy consumption of a heat exchange end. Namely the utility model discloses air conditioning system has solved and has adopted the refrigeration dehumidification among the prior art, and the temperature that causes the air conditioning system energy consumption height and after handling is low excessively to and adopt the electrical heating dehumidification, cause the high technical problem of energy consumption.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art air conditioning system for a marine vessel;

FIG. 2 is a schematic view of a preferred embodiment of the air conditioning system of the present invention;

fig. 3 is a schematic view of another preferred embodiment of the air conditioning system of the present invention.

In the figure: 100. a tip assembly; 101. a fresh air port; 102. an air return opening; 103. a wind mixing section; 104. a filtration section; 105. a first surface air cooler; 106. a humidification stage; 107. a fan; 108. a second surface air cooler; 109. an air supply section; 110. an air supply outlet; 111. a fresh air temperature and humidity sensor; 112. a return air temperature and humidity sensor; 200. a refrigeration host machine; 201. an evaporator; 202. a condenser; 301. a chilled water supply pipe; 302. a chilled water return pipe; 303. a freezing side water pump; 304. a second control valve; 401. a first control valve; 402. a first cooling water supply pipe; 403. a first cooling water return pipe; 404. a cooling side water pump; 500. a heat exchanger; 501. a second cooling water supply pipe; 502. a second cooling water return pipe; 503. a cooling medium water supply pipe; 504. a cooling medium return pipe; 505. and a coolant-side water pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

The air conditioning system and the control method thereof according to the present invention will be described in detail with reference to fig. 2 and 3 and embodiments 1 and 2 of the specification.

Example 1

This embodiment is right the utility model discloses air conditioning system explains in detail.

The air conditioning system of the embodiment includes a terminal component 100, a refrigeration host 200, a chilled water circulation component, a first cooling water circulation component, a second cooling water circulation component, and a heat exchanging end, wherein the refrigeration host 200 includes an evaporator 201 and a condenser 202, the evaporator 201 is connected with the terminal component 100 through the chilled water circulation component and forms a chilled water circulation flow path, the condenser 202 is connected with the terminal component 100 through the first cooling water circulation component and forms a first cooling water circulation flow path, and the condenser 202 is further connected with the heat exchanging end through the second cooling water circulation component and forms a second cooling water circulation flow path, as shown in fig. 2. Preferably, the air conditioning system further includes a first control valve 401, the first control valve 401 is disposed on the first cooling water circulation path, and based on a difference between the return air relative humidity monitored by the terminal assembly 100 and a preset indoor relative humidity, the first control valve 401 is in an open state or a closed state, and connects or disconnects the first cooling water circulation path, as shown in fig. 2. Preferably, the number of the terminal assembly 100 may be one, or may be two or more.

The air conditioning system of this embodiment, especially, refer to the air conditioning system who is applicable to boats and ships, and the heat transfer end also can be said the sea water end this moment for the cooling water that condenser 202 discharged can exchange heat with the sea water.

The air conditioning system of the present embodiment is a primary return air system in an all-air system. In the refrigeration process of the refrigeration host 200, the evaporator 201 absorbs heat for refrigeration, and the temperature of the water supplied to the evaporation side is usually 7/12 ℃; the condenser 202 is used for condensation and heat release, and the temperature of the supply return water at the condensation side is 37/32 ℃ usually. Thereby providing a basis for heating and dehumidifying the terminal air using the relatively high temperature water source of the condenser 202.

In the air conditioning system of the embodiment, when the tail end air needs to be dehumidified, the first control valve 401 is opened and the first cooling water circulation flow path is communicated, the condensation heat discharged by the condenser 202 can be used for heating and dehumidifying the tail end air, so that not only can the air humidity be reduced, but also the indoor relative humidity reaches the indoor preset relative humidity, the comfort of the indoor environment is improved, the condensation heat generated by the condenser 202 can be fully utilized, the energy consumption is saved, the direct discharge of the condensation heat of the condenser 202 is avoided, and the problem of energy waste caused by the direct loss of part of heat is solved; when the tail air does not need to be dehumidified, the first control valve 401 is closed, the first cooling water circulation flow path is disconnected, and the condenser 202 can discharge condensation heat through heat exchange with the heat exchange end; on the other hand, when the condensation heat exhausted from the condenser 202 is utilized to heat and dehumidify the air at the end, it means that the condensation heat exhausted by heat exchange with the heat exchange end is reduced, so as to reduce the energy consumption of the heat exchange end, and further reduce the energy consumption of the air conditioning system of the embodiment.

Therefore, in the air conditioning system of the embodiment, the condensation heat of the condenser 202 is used for heating and dehumidifying the air at the tail end, and compared with the refrigeration and dehumidification in the prior art, the refrigeration effect of the tail end assembly cannot be influenced, so that the problems of high energy consumption and low temperature after treatment of the air conditioning system can be avoided; compared with the electric heating dehumidification in the prior art, the energy consumption of the air conditioning system can be reduced from two aspects of utilization of condensation heat and reduction of energy consumption of a heat exchange end. This embodiment air conditioning system has solved and has adopted refrigeration dehumidification among the prior art, causes air conditioning system energy consumption height and the temperature after handling to hang down excessively to and adopt electrical heating dehumidification, cause the high technical problem of energy consumption.

According to a preferred embodiment, the first cooling water circulation module includes a first cooling water supply pipe 402, a first cooling water return pipe 403, and a cooling-side water pump 404, wherein both ends of the first cooling water supply pipe 402 are connected to an outlet of the condenser 202 and an inlet of the second surface cooler 108 of the terminal module 100, respectively; both ends of the first cooling water return pipe 403 are respectively connected with the outlet of the second surface air cooler 108 and the inlet of the condenser 202; the cooling-side water pump 404 is provided on the first cooling water supply pipe 402 or the first cooling water return pipe 403, as shown in fig. 2. Preferably, the cooling-side water pump 404 is provided in the first cooling-water return pipe 403. In the air conditioning system according to the preferred embodiment of the present invention, the first cooling water supply pipe 402, the first cooling water return pipe 403, and the cooling-side water pump 404 form a first cooling water circulation flow path between the condenser 202 and the second surface air cooler 108 of the terminal assembly 100, so that the high-temperature condensed water discharged from the condenser 202 can be used to heat and dehumidify the terminal air, and the condensed water after heat exchange returns to the condenser 202, thereby performing the function of discharging the heat of condensation of the condenser 202.

According to a preferred embodiment, the heat exchange side includes a heat exchanger 500 and a heat exchange side circulation assembly, and the condenser 202 is connected to the heat exchanger 500 through a second cooling water circulation assembly and forms a second cooling water circulation flow path, and the heat exchanger 500 is also connected to the cooling medium through the heat exchange side circulation assembly and forms a cooling medium circulation flow path, as shown in fig. 2. Preferably, the heat exchanger 500 is a plate heat exchanger. Preferably, the inner shell pipe of the condenser 202 is set to be 4 pipes, wherein 2 pipes are used for heating and dehumidifying the tail end air, and the other 2 pipes are subjected to heat exchange treatment with a cooling medium. Preferably, the cooling medium is, for example, seawater. The air conditioning system according to the preferred embodiment of the present invention does not need to heat and dehumidify the air at the end, or the cooling water discharged from the condenser 202 is not completely used for heating and dehumidifying the air at the end, and the cooling water discharged from the condenser 202 can exchange heat with the heat exchange end at the heat exchanger 500, thereby performing the function of discharging the condensation heat of the condenser 202.

According to a preferred embodiment, the second cooling water circulation module includes a second cooling water supply pipe 501 and a second cooling water return pipe 502, wherein both ends of the second cooling water supply pipe 501 are connected to an outlet of the condenser 202 and a first inlet of the heat exchanger 500, respectively; both ends of the second cooling water returning pipe 502 are connected to a first outlet of the heat exchanger 500 and an inlet of the condenser 202, respectively, as shown in fig. 2. In the air conditioning system according to the preferred embodiment of the present invention, the second cooling water circulation flow path is formed between the condenser 202 and the heat exchanger 500 through the second cooling water supply pipe 501 and the second cooling water return pipe 502, so that the high-temperature cooling water discharged from the condenser 202 exchanges heat with the heat exchange end at the heat exchanger 500, and the cooling water after heat exchange returns to the condenser 202, thereby discharging the condensation heat of the condenser 202.

According to a preferred embodiment, the heat exchange side circulation module includes a cooling medium water supply pipe 503, a cooling medium water return pipe 504, and a cooling medium side water pump 505, wherein both ends of the cooling medium water supply pipe 503 are connected to the second inlet of the heat exchanger 500 and the cooling medium, respectively; two ends of the cooling medium return pipe 504 are respectively connected with the second outlet of the heat exchanger 500 and the cooling medium; the coolant-side water pump 505 is provided in the coolant supply pipe 503 or the coolant return pipe 504, as shown in fig. 2. Preferably, the cooling medium-side water pump 505 is provided in the cooling medium return pipe 504. In the air conditioning system according to the preferred embodiment of the present invention, the cooling medium water supply pipe 503, the cooling medium water return pipe 504, and the cooling medium-side water pump 505 allow the heat exchange between the cooling medium and the high-temperature cooling water discharged from the condenser 202 at the heat exchanger 500, and the cooling medium after the heat exchange returns. When the terminal air needs to be dehumidified, the first control valve 401 is opened, and the first cooling water circulation flow path is communicated, the condensation heat discharged by the condenser 202 is used for heating and dehumidifying the terminal air, so that the condensation heat discharged by heat exchange with the cooling medium is reduced, the energy consumption of the cooling medium side water pump 505 can be reduced, and the energy consumption of the air conditioning system can be further reduced.

According to a preferred embodiment, the first control valve 401 is provided on the first cooling water supply pipe 402, or the first control valve 401 is provided at the junction of the first cooling water supply pipe 402 and the second cooling water supply pipe 501, and the magnitude of the frequency of the cooling medium side water pump 505 and the magnitude of the difference between the relative humidity of the return air monitored by the terminal assembly 100 and the preset indoor relative humidity determine the magnitude of the opening of the first control valve 401; the difference between the real-time return water temperature of the condenser 202 and the preset return water temperature also determines the opening of the first control valve 401 and the frequency of the cooling medium side water pump 505. Preferably, the first control valve 401 is a two-way valve, and the first control valve 401 is provided on the first cooling water supply pipe 402, as shown in fig. 2. Preferably, the first control valve 401 is a three-way valve, and the first control valve 401 is provided at a junction of the first cooling water supply pipe 402 and the second cooling water supply pipe 501, as shown in fig. 3.

According to the preferable technical scheme of the embodiment, the frequency of the cooling medium side water pump 505 and the difference between the return air relative humidity monitored by the terminal assembly 100 and the indoor preset relative humidity determine the opening degree of the first control valve 401, so that the water flow of the high-temperature cooling water discharged by the condenser 202 into the second surface air cooler 108 can be controlled by controlling the opening degree of the first control valve 401 and the frequency of the cooling medium side water pump 505, the treatment effect of heating and dehumidifying the terminal air by the condensation heat of the condenser 202 is adjusted, the preset relative humidity in the cabin is maintained, and the requirement of human body comfort is met. On the other hand, when the return water temperature of the condenser 202 is too high, the energy efficiency of the refrigeration main unit 200 is affected. In the preferred technical scheme of this embodiment, the difference between the real-time return water temperature of the condenser 202 and the preset return water temperature also determines the opening of the first control valve 401 and the frequency of the cooling medium side water pump 505, so that the opening of the first control valve 401 can be controlled to control the flow rate of the high-temperature cooling water discharged from the condenser 202 entering the heat exchanger 500 for heat exchange with the heat exchange end, and the frequency of the cooling medium side water pump 505 can be controlled to control the amount of the cooling medium entering the heat exchanger 500, thereby ensuring the stability of the return water temperature of the cooling water.

According to a preferred embodiment, the chilled water circulation assembly includes a chilled water supply pipe 301, a chilled water return pipe 302, and a freezing-side water pump 303, wherein both ends of the chilled water supply pipe 301 are connected to an outlet of the evaporator 201 and an inlet of the first surface cooler 105 of the terminal assembly 100, respectively; both ends of the chilled water return pipe 302 are respectively connected with the outlet of the first surface air cooler 105 and the inlet of the evaporator 201; the freezing-side water pump 303 is provided on the chilled water supply pipe 301 or the chilled water return pipe 302, as shown in fig. 2. In the air conditioning system according to the preferred embodiment of the present invention, the chilled water circulation path is formed between the evaporator 201 and the first surface cooler 105 of the terminal module 100 by the chilled water supply pipe 301, the chilled water return pipe 302, and the chilled water pump 303, so that the terminal air is cooled by the low-temperature chilled water discharged from the evaporator 201, and the chilled water after heat exchange is returned to the evaporator 201.

According to a preferred embodiment, the chilled water circulation module further comprises a second control valve 304, the second control valve 304 is disposed on the chilled water supply pipe 301, and the opening and closing of the second control valve 304 are related to the difference between the fresh air temperature monitored by the terminal module 100 and the preset refrigerating host start temperature value, as shown in fig. 2. The chilled water circulation assembly according to the preferred embodiment of the present invention further includes a second control valve 304, and the communication state of the chilled water circulation flow path can be controlled by controlling the opening and closing of the second control valve 304, so that the refrigeration of the air at the end by the chilled water discharged from the evaporator 201 can be realized, or the refrigeration can not be controlled at the end.

According to a preferred embodiment, the terminal assembly 100 comprises a wind mixing section 103, a filtering section 104, a first surface air cooler 105, a humidifying section 106, a fan 107, a second surface air cooler 108 and a wind supply section 109, wherein the wind mixing section 103, the filtering section 104, the first surface air cooler 105, the humidifying section 106, the fan 107, the second surface air cooler 108 and the wind supply section 109 are sequentially arranged at intervals, a fresh wind port 101 and a return wind port 102 are arranged at the wind mixing section 103, and a wind supply port 110 is arranged at the wind supply section 109, as shown in fig. 2. Preferably, the structure and function of the various parts of tip assembly 100 may be the same as those of the prior art and will not be described further herein. Preferably, the terminal assembly 100 further comprises a fresh air temperature and humidity sensor 111 and a return air temperature and humidity sensor 112, wherein the fresh air temperature and humidity sensor 111 is arranged at the fresh air inlet 101 and is used for detecting the temperature and humidity of fresh air; the return air temperature and humidity sensor 112 is disposed at the return air inlet 102 and is used to detect the temperature and humidity of the return air, as shown in fig. 2. According to the preferred technical scheme of the embodiment, the fresh air temperature and humidity sensor 111 and the return air temperature and humidity sensor 112 are used for monitoring indoor and outdoor temperatures and humidities in real time so as to control an air conditioning system, and the indoor temperature and humidity can be kept in an indoor preset temperature and humidity range all the time.

Example 2

This embodiment is right the utility model discloses air conditioning system's control method explains in detail.

The control method of the air conditioning system according to any one of embodiments 1, including the steps of:

acquiring the relative humidity of return air of the terminal assembly 100;

comparing the relative humidity of the return air of the terminal assembly 100 with the preset relative humidity in the room;

based on the comparison result between the return air relative humidity of the terminal assembly 100 and the indoor preset relative humidity, the first control valve 401 is controlled to be in an open state or a closed state, and the first cooling water circulation flow path is connected or disconnected.

Preferably, the return air relative humidity of the end unit 100 is monitored by the return air temperature and humidity sensor 112, and the time interval for reading the data can be set to 600S, so that frequent adjustment of the first control valve 401 can be avoided. Without being limited thereto, the time interval may be set as the remaining parameters.

In the control method of this embodiment, based on the comparison result between the return air relative humidity of the terminal assembly 100 and the indoor preset relative humidity, the first control valve 401 is controlled to be in the open state or the close state, specifically, when the terminal air needs to be dehumidified, and the first control valve 401 is controlled to be opened and the first cooling water circulation flow path is communicated, the terminal air can be heated and dehumidified by using the condensation heat discharged by the condenser 202, so that the air humidity can be reduced, the indoor relative humidity reaches the indoor preset relative humidity, the comfort of the indoor environment is improved, the condensation heat generated by the condenser 202 can be fully utilized, the energy consumption is reduced, and the problem that the condensation heat of the condenser 202 is directly discharged, and the energy waste is caused due to the direct loss of the part of heat is avoided; when the terminal air does not need to be dehumidified, the first control valve 401 is controlled to be closed; on the other hand, when the condensation heat exhausted from the condenser 202 is used to heat and dehumidify the air at the end, it means that the condensation heat exhausted by heat exchange with the heat exchange end is reduced, so as to reduce the energy consumption of the heat exchange end, and further reduce the energy consumption of the air conditioning system of this embodiment.

Therefore, in the air conditioning system of the embodiment, the condensation heat of the condenser 202 is used for heating and dehumidifying the tail end air, compared with the refrigeration and dehumidification in the prior art, the refrigeration effect of the tail end assembly cannot be influenced, and the problems of high energy consumption and low temperature after treatment of the air conditioning system can be avoided; compared with the electric heating dehumidification in the prior art, the energy consumption of the air conditioning system can be reduced from two aspects of utilization of condensation heat and reduction of energy consumption of a heat exchange end. The control method of the embodiment solves the technical problems that in the prior art, refrigeration dehumidification is adopted, so that the energy consumption of an air conditioning system is high, the temperature after treatment is too low, and electric heating dehumidification is adopted, so that the energy consumption is high.

According to a preferred embodiment, the control method of the air conditioning system further includes the steps of: based on the result of comparison between the return air relative humidity of the terminal assembly 100 and the indoor preset relative humidity, the frequency of the cooling medium side water pump 505 is controlled and the condenser 202 is kept at the preset return water temperature. In the control method according to the preferred embodiment of the present invention, based on the comparison result between the return air relative humidity of the end assembly 100 and the indoor preset relative humidity, the frequency of the cooling medium side water pump 505 is controlled, so that the amount of the cooling medium entering the heat exchanger 500 can be controlled, and the stability of the return water temperature of the cooling water can be ensured.

According to a preferred embodiment, when the relative humidity of the return air monitored by the tip assembly 100 is:

if the first control valve 401 is currently in a closed state, controlling the first control valve 401 to be in an open state, and simultaneously controlling the frequency of the cooling medium side water pump 505 to change towards a decreasing direction; if the first control valve 401 is currently in the open state, the first control valve 401 is controlled to change in the direction of increasing the opening degree, and the frequency of the cooling medium side water pump 505 is controlled to change in the direction of decreasing; when the relative humidity of the return air monitored by the tip assembly 100 satisfies:

the opening degree of the first control valve 401 and the frequency of the coolant-side water pump 505 are controlled to be constant; when the relative humidity of the return air monitored by the tip assembly 100 satisfies:

the first control valve 401 is controlled to change in the direction of decreasing the opening degree, and the frequency of the coolant-side water pump 505 is controlledA change to an increasing direction; wherein, the first and the second end of the pipe are connected with each other,

for the relative humidity of the return air monitored by the tip assembly 100,

the relative humidity is preset for the room.

For example, 60%. Not to be limited thereto,

and can be set according to actual requirements. The frequency of the coolant-side water pump 505 is preferably changed by 1Hz at every increase or decrease, but is not limited thereto, and the frequency of the coolant-side water pump 505 may be set to the remaining value.

Specifically, when the relative humidity of the return air monitored by the terminal assembly 100 satisfies:

if the current first control valve 401 is in a closed state, the first control valve 401 is controlled to be in an open state, and the frequency of the cooling medium side water pump 505 is controlled to change towards a decreasing direction, so that high-temperature cooling water discharged from the condenser 202 can enter the second surface air cooler 108, and the tail end air is heated and dehumidified by using the condensation heat discharged from the condenser 202; if the first control valve 401 is currently in the open state, the first control valve 401 is controlled to change towards the direction of increasing the opening degree, and the frequency of the cooling medium side water pump 505 is controlled to change towards the direction of decreasing, so that the flow rate of the high-temperature cooling water discharged by the condenser 202 entering the second surface air cooler 108 is increased, and the treatment effect of heating and dehumidifying the tail end air by the condensation heat is improved. When the relative humidity of the return air monitored by the tip assembly 100 satisfies:

at this time, the relative humidity in the cabin is considered to be satisfactory and no adjustment is required, so that the opening degree of the first control valve 401 and the frequency of the coolant-side water pump 505 are kept constant. When the relative humidity of the return air monitored by the tip assembly 100 satisfies:

when the relative humidity in the cabin is too low, the first control valve 401 is controlled to change towards the direction of decreasing the opening degree, and the frequency of the cooling medium side water pump 505 is controlled to change towards the direction of increasing, so that the flow rate of the high-temperature cooling water discharged by the condenser 202 entering the second surface air cooler 108 is decreased, and the treatment effect of heating and dehumidifying the tail end air by the condensation heat is reduced.

According to a preferred embodiment, the control method of the air conditioning system further includes the steps of:

acquiring the real-time return water temperature of the condenser 202;

comparing the real-time return water temperature of the condenser 202 with a preset return water temperature;

the frequency of the cooling medium side water pump 505 and the opening degree of the first control valve 401 are controlled based on the comparison result of the real-time return water temperature of the condenser 202 and the preset return water temperature.

Preferably, the real-time water return temperature of the condenser 202 is monitored by using a temperature monitoring device of the refrigeration host 200, and the time interval for reading the data can be set to 600S, so that frequent adjustment of the frequency of the cooling medium side water pump 505 and the opening degree of the first control valve 401 can be avoided. Not limited to this, the time interval may also be set as the remaining parameters.

When the return water temperature of the condenser 202 is too high, the energy efficiency of the refrigeration main machine 200 is affected. In the control method of the preferred technical scheme of this embodiment, based on the comparison result between the real-time water return temperature of the condenser 202 and the preset water return temperature, the frequency of the cooling medium side water pump 505 and the opening degree of the first control valve 401 are controlled, so that the water flow rate of the high-temperature cooling water discharged from the condenser 202 entering the heat exchanger 500 for heat exchange with the heat exchange end can be controlled by controlling the opening degree of the first control valve 401, and the cooling medium quantity entering the heat exchanger 500 is controlled by controlling the frequency of the cooling medium side water pump 505, thereby ensuring the stability of the cooling water return temperature and avoiding affecting the energy efficiency of the refrigeration host 200.

According to a preferred embodiment, when the real-time return water temperature of the condenser 202 is higher than the preset return water temperature, the frequency of the cooling medium side water pump 505 is controlled to change in an increasing direction, and after the frequency of the cooling medium side water pump 505 reaches a maximum value, the first control valve 401 is controlled to change in a decreasing direction; when the real-time water return temperature of the condenser 202 is less than or equal to the preset water return temperature, the frequency of the cooling medium side water pump 505 and the opening degree of the first control valve 401 are controlled to be kept unchanged. Specifically, when the real-time water return temperature of the condenser 202 is higher than the preset water return temperature, the frequency of the cooling medium side water pump 505 is controlled to change towards the increasing direction, the quantity of the cooling medium entering the heat exchanger 500 can be increased, and therefore the heat exchange effect between the high-temperature cooling water discharged by the condenser 202 and the cooling medium at the heat exchanger 500 can be enhanced, the real-time water return temperature of the condenser 202 is reduced, and the energy efficiency of the host is improved. Because the frequency adjusting range of the cooling medium side water pump 505 is limited, when the frequency of the cooling medium side water pump 505 reaches the maximum value, the real-time water return temperature of the condenser 202 is still greater than the preset water return temperature, and at the moment, the first control valve 401 can be controlled to change towards the direction of reducing the opening degree, so that the water flow of high-temperature cooling water discharged by the condenser 202 entering the heat exchanger 500 is increased, the heat exchange effect of the high-temperature cooling water discharged by the condenser 202 and the cooling medium at the heat exchanger 500 can be enhanced, the real-time water return temperature of the condenser 202 is reduced, and the energy efficiency of a host is improved. When the real-time water return temperature of the condenser 202 is less than or equal to the preset water return temperature, the host energy efficiency does not need to be adjusted, and therefore the frequency of the cooling medium side water pump 505 and the opening degree of the first control valve 401 are kept unchanged.

acquiring the fresh air temperature of the terminal assembly 100;

comparing the fresh air temperature of the tail end assembly 100 with the preset starting temperature value of the refrigeration host;

based on the comparison result between the fresh air temperature of the terminal assembly 100 and the preset refrigeration host start temperature value, the second control valve 304 is controlled to be in an open state or a closed state, and the chilled water circulation flow path is connected or disconnected.

Preferably, the fresh air temperature of the terminal assembly 100 is monitored by the fresh air temperature and humidity sensor 111, and the time interval for reading the data can be set to 600S, so that frequent adjustment of the second control valve 304 can be avoided. Without being limited thereto, the time interval may be set as the remaining parameters.

In the control method of the preferred technical scheme of this embodiment, based on the comparison result between the fresh air temperature of the terminal component 100 and the preset refrigeration host start temperature value, the second control valve 304 is controlled to be in the open state or the close state, specifically, when the terminal air needs to be refrigerated, the second control valve 304 is controlled to be in the open state, and the chilled water circulation flow path is communicated, so that the chilled water discharged by the evaporator 201 can be used for refrigerating the terminal air; when the terminal air does not need to be cooled, the second control valve 304 is controlled to be in a closed state, and the chilled water circulation flow path is cut off, so that the cooling main machine 200 does not cool the terminal air.

According to a preferred embodiment, when the fresh air temperature monitored by the terminal assembly 100 satisfies: t is ₁ ≥T ₀ Controlling the second control valve 304 to be in an open state, and communicating the chilled water circulation flow path; when the fresh air temperature monitored by the terminal assembly 100 meets the following requirements: t is a unit of ₁ ＜T ₀ Controlling the second control valve 304 to be in a closed state, and disconnecting the chilled water circulation flow path; wherein, T ₁ Fresh air temperature, T, monitored for the end module 100 ₀ The starting temperature value of the refrigeration host is preset. Specifically, when the temperature of the fresh air monitored by the end assembly 100 meets the following requirements: t is ₁ ≥T ₀ When the outdoor temperature is too high and the terminal air needs to be cooled, the second control valve 304 is in an open state, and the chilled water circulation flow path is communicated, so that the chilled water discharged from the evaporator 201 is used to cool the terminal air. As monitored by the tip assembly 100The fresh air temperature meets: t is ₁ ＜T ₀ At this time, the cooling of the end air is not required, and the second control valve 304 is in the closed state, so that the chilled water circulation flow path is cut off, and the end air is not cooled.

According to a preferred embodiment, the second control valve 304, when in the open state, further comprises the steps of:

obtaining return air temperature of the tip assembly 100;

comparing the return air temperature of the terminal assembly 100 with the indoor preset temperature;

the operating frequency of the blower 107 of the terminal assembly 100 and the supply water temperature of the chilled water supply pipe 301 are controlled based on the result of comparing the return air temperature of the terminal assembly 100 with the indoor preset temperature.

Preferably, the return air temperature of the terminal assembly 100 is monitored by the return air temperature/humidity sensor 112, and the time interval for reading the data may be set to 600S, so that frequent adjustment of the operating frequency of the blower 107 and the supply water temperature of the chilled water supply pipe 301 may be avoided. Without being limited thereto, the time interval may be set as the remaining parameters.

According to the control method of the preferred technical scheme of the embodiment, based on the comparison result of the return air temperature of the terminal assembly 100 and the indoor preset temperature, the operation frequency of the fan 107 of the terminal assembly 100 and the water supply temperature of the chilled water supply pipe 301 are controlled, so that the fresh air volume sent into the room can be controlled by controlling the operation frequency of the fan 107, the refrigeration effect on the terminal air is controlled by controlling the water supply temperature of the chilled water supply pipe 301, and the indoor temperature meets the preset indoor temperature.

According to a preferred embodiment, when the return air temperature monitored by the tip assembly 100 satisfies: t is ₂ ＞T _x Controlling the operating frequency of the blower fan 107 to be changed in an increasing direction, and controlling the supply water temperature of the frozen water supply pipe 301 to be changed in a decreasing direction after the operating frequency of the blower fan 107 reaches a maximum value; when the return air temperature monitored by the tip assembly 100 is satisfied: t is _x －2≤T ₂ ≤T _x Controlling the operation frequency of the fan 107 and the water supply temperature of the chilled water supply pipe 301 to be constant;when the return air temperature monitored by the tip assembly 100 is satisfied: t is ₂ ＜T _x -2, controlling the operating frequency of the fan 107 to be changed in a decreasing direction, and controlling the supply water temperature of the frozen water supply pipe 301 to be changed in an increasing direction after the operating frequency of the fan 107 reaches a minimum value; wherein, T ₂ Return air temperature, T, monitored for the tip assembly 100 _x The temperature is preset indoors. T is _x For example 26 deg.c. Not limited thereto, T _x And may also be determined based on actual demand. Preferably, the variation range of the operating frequency of the fan 107 is 1Hz per increment or decrement, but is not limited thereto, and the variation range of the operating frequency of the fan 107 may be set to the remaining value.

Specifically, when the return air temperature monitored by the terminal assembly 100 satisfies: t is ₂ ＞T _x At this time, the indoor temperature is too high, the operation frequency of the fan 107 is controlled to change towards the increasing direction, and the air supply quantity of the fan 107 can be increased, so that more cold air enters the room, the indoor cooling effect is enhanced, and the indoor temperature meets the preset indoor temperature. Due to the limited range of adjustment of the operating frequency of the fan 107, when the operating frequency of the fan 107 reaches a maximum value, the return air temperature monitored by the end assembly 100 still satisfies: t is ₂ ＞T _x At this time, the supply water temperature of the frozen water supply pipe 301 is controlled to be changed in a direction of decreasing, so that the cooling effect for the terminal air can be improved, and thus the indoor temperature can satisfy the preset indoor temperature. When the return air temperature monitored by the tip assembly 100 is satisfied: t is _x －2≤T ₂ ≤T _x At this time, the indoor temperature is considered to be satisfactory without adjustment, and thus the operating frequency of the blower 107 and the supply water temperature of the chilled water supply pipe 301 are maintained constant. When the return air temperature monitored by the tip assembly 100 is satisfied: t is a unit of ₂ ＜T _x And-2, when the indoor temperature is too low, controlling the operation frequency of the fan 107 to change towards a decreasing direction, and reducing the air supply quantity of the fan 107, so that the cold air quantity entering the indoor is reduced, and increasing the indoor temperature to make the indoor temperature meet the preset indoor temperature. When the operating frequency of fan 107 reaches a minimum, the return air temperature monitored by tip assembly 100 is still satisfied: t is a unit of ₂ ＜T _x And 2, controlling the supply water temperature of the frozen water supply pipe 301 to be changed in an increasing direction, thereby reducing the cooling effect on the terminal air and allowing the indoor temperature to satisfy the preset indoor temperature.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air conditioning system is characterized by comprising a tail end assembly (100), a refrigeration main machine (200), a chilled water circulation assembly, a first cooling water circulation assembly, a second cooling water circulation assembly and a heat exchange end, wherein the refrigeration main machine (200) comprises an evaporator (201) and a condenser (202),

the evaporator (201) is connected with the tail end component (100) through the chilled water circulation component to form a chilled water circulation flow path, the condenser (202) is connected with the tail end component (100) through the first cooling water circulation component to form a first cooling water circulation flow path, and the condenser (202) is also connected with the heat exchange end through the second cooling water circulation component to form a second cooling water circulation flow path, and

the air conditioning system further comprises a first control valve (401), wherein the first control valve (401) is arranged on the first cooling water circulation path, and based on the difference value between the return air relative humidity monitored by the terminal component (100) and the indoor preset relative humidity, the first control valve (401) is in an opening state or a closing state and enables the first cooling water circulation flow path to be connected or disconnected.

2. The air conditioning system as claimed in claim 1, wherein the first cooling water circulation unit includes a first cooling water supply pipe (402), a first cooling water return pipe (403), and a cooling side water pump (404), wherein both ends of the first cooling water supply pipe (402) are connected to an outlet of the condenser (202) and an inlet of the second surface cooler (108) of the terminal unit (100), respectively; two ends of the first cooling water return pipe (403) are respectively connected with an outlet of the second surface cooler (108) and an inlet of the condenser (202); the cooling-side water pump (404) is provided in the first cooling water supply pipe (402) or the first cooling water return pipe (403).

3. The air conditioning system according to claim 1, wherein the heat exchanging end includes a heat exchanger (500) and a heat exchange side circulation module, and the condenser (202) is connected to the heat exchanger (500) through the second cooling water circulation module and forms a second cooling water circulation flow path, and the heat exchanger (500) is also connected to a cooling medium through the heat exchange side circulation module and forms a cooling medium circulation flow path.

4. The air conditioning system as claimed in claim 3, wherein the second cooling water circulation assembly includes a second cooling water supply pipe (501) and a second cooling water return pipe (502), wherein both ends of the second cooling water supply pipe (501) are connected to an outlet of the condenser (202) and a first inlet of the heat exchanger (500), respectively; and two ends of the second cooling water return pipe (502) are respectively connected with a first outlet of the heat exchanger (500) and an inlet of the condenser (202).

5. The air conditioning system as claimed in claim 3, wherein the heat exchange side circulation assembly includes a cooling medium water supply pipe (503), a cooling medium water return pipe (504), and a cooling medium side water pump (505), wherein both ends of the cooling medium water supply pipe (503) are connected to the second inlet of the heat exchanger (500) and the cooling medium, respectively; two ends of the cooling medium water return pipe (504) are respectively connected with a second outlet of the heat exchanger (500) and a cooling medium; the cooling medium-side water pump (505) is provided on the cooling medium water supply pipe (503) or the cooling medium water return pipe (504).

6. The air conditioning system as claimed in claim 5, wherein the first control valve (401) is provided on the first cooling water supply pipe (402), or the first control valve (401) is provided at a junction of the first cooling water supply pipe (402) and the second cooling water supply pipe (501), and

the opening degree of the first control valve (401) is determined by the frequency of the cooling medium side water pump (505) and the difference value between the return air relative humidity monitored by the tail end assembly (100) and the indoor preset relative humidity; the difference value between the real-time water return temperature of the condenser (202) and the preset water return temperature also determines the opening degree of the first control valve (401) and the frequency of the cooling medium side water pump (505).

7. The air conditioning system as claimed in claim 1, wherein the chilled water circulation assembly includes a chilled water supply pipe (301), a chilled water return pipe (302), and a freezing-side water pump (303), wherein both ends of the chilled water supply pipe (301) are connected to an outlet of the evaporator (201) and an inlet of the first surface cooler (105) of the terminal assembly (100), respectively; two ends of the chilled water return pipe (302) are respectively connected with an outlet of the first surface air cooler (105) and an inlet of the evaporator (201); the freezing side water pump (303) is provided on the freezing water supply pipe (301) or the freezing water return pipe (302).

8. The system of claim 7, wherein the chilled water circulation module further comprises a second control valve (304), the second control valve (304) is disposed on the chilled water supply pipe (301), and the opening and closing of the second control valve (304) is related to a difference between a fresh air temperature monitored by the terminal module (100) and a preset refrigeration host start temperature value.

9. The air conditioning system of claim 1, wherein the terminal assembly (100) comprises an air mixing section (103), a filtering section (104), a first surface air cooler (105), a humidifying section (106), a fan (107), a second surface air cooler (108) and an air supply section (109), the air mixing section (103), the filtering section (104), the first surface air cooler (105), the humidifying section (106), the fan (107), the second surface air cooler (108) and the air supply section (109) are sequentially arranged at intervals, wherein a fresh air opening (101) and a return air opening (102) are arranged at the air mixing section (103), and an air supply opening (110) is arranged at the air supply section (109).

10. The air conditioning system of claim 9, wherein the terminal assembly (100) further comprises a fresh air temperature and humidity sensor (111) and a return air temperature and humidity sensor (112), wherein the fresh air temperature and humidity sensor (111) is disposed at the fresh air inlet (101) and is configured to detect a temperature and a humidity of fresh air; the return air temperature and humidity sensor (112) is arranged at the return air inlet (102) and used for detecting the temperature and the humidity of return air.