CN219120734U

CN219120734U - Variable air volume air conditioner tail end control device easy to distinguish cold and hot working conditions

Info

Publication number: CN219120734U
Application number: CN202223055245.3U
Authority: CN
Inventors: 吕芳; 苗健; 李宗新; 王威; 董烘杉; 刘琪
Original assignee: National Academy of Defense Engineering of PLA Academy of Military Science
Current assignee: National Academy of Defense Engineering of PLA Academy of Military Science
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-06-02
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a variable air volume air conditioner tail end control device easy to distinguish cold and hot working conditions, which comprises an air conditioner air supply outlet, a fan coil, a variable air volume control valve, an electric two-way valve, an air supply pipe, a water supply cold pipe and a control main valve, wherein the air supply pipe is mutually matched with the air conditioner air supply outlet through a connecting port; a variable air volume control valve is arranged above the air supply opening of the air conditioner and is connected with the air supply pipe in a penetrating way; the left side of the air supply outlet of the air conditioner is sequentially communicated with a fan coil, an electric two-way valve and a water supply cold pipe, and the electric two-way valve is arranged between the fan coil 2 and the water supply cold pipe; the fan coil and the variable air volume control valve are respectively connected with the same control main valve through wires. Through this change air conditioner end control device of cold and hot operating mode of easily distinguishing, carry out accurate control to room temperature, better solved when current air conditioner change air volume adopts two kinds of control modes to control respectively, the user judges the mistake easily, and influences the problem of fresh air supply, can realize original control function simultaneously.

Description

Variable air volume air conditioner tail end control device easy to distinguish cold and hot working conditions

Technical Field

The utility model relates to the technical field of air conditioner terminal air quantity control, in particular to an air conditioner terminal control device with variable air quantity, which is easy to distinguish cold and hot working conditions.

Background

At the tail end of a conventional variable air volume all-air conditioning system, the principle automatically adjusts a valve on an air supply pipeline according to the difference value between the room temperature and the set temperature T3. In some special projects, the ventilation quantity is required to provide fresh air required by the breathing of people because of no natural ventilation condition, so that the ventilation quantity cannot be reduced without limit; and the all-air conditioning system needs to serve a plurality of rooms at the same time, and the air supply temperature T1 is uniform, so that the air supply temperature T1 requirement of each room cannot be met at the same time.

The conventional control mode is that, as shown in fig. 1, a separate control system is arranged at the tail section of the fan coil and the variable air volume, and when the two control modes are adopted to control the air conditioner respectively, the judgment needs to be carried out manually, and a higher professional level is needed, so that a common user or a professional person does not necessarily have professional analysis capability, and further a judgment error is easy to occur, so that the air conditioner needs to be heated instead of cooled, needs to be cooled instead of heated, and can influence the supply of fresh air volume of the air conditioner at the same time.

Therefore, the design combines the fan coil system to carry out logic design, namely, two control modes are combined, the required temperature can be set by a user, the room temperature is accurately controlled, and the user side can automatically realize the adjusting function only by setting the required temperature system.

Disclosure of Invention

Aiming at the technical defects, the utility model aims to provide the tail end control device of the variable air volume air conditioner, which is easy to judge cold and hot working conditions, and better solves the problems that when the variable air volume of the existing air conditioner is controlled by adopting two control modes respectively, a user easily judges errors and the fresh air volume supply is influenced.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a variable air volume air conditioner tail end control device easy to distinguish cold and hot working conditions, which comprises an air conditioner air supply outlet, a fan coil, a variable air volume control valve, an electric two-way valve, an air supply pipe, a water supply cold pipe and a control main valve, wherein the air supply pipe is mutually matched with the air conditioner air supply outlet through a connecting port; a variable air volume control valve is arranged above the air conditioner air supply outlet and is connected with the air supply pipe in a penetrating manner; the left side of the air supply outlet of the air conditioner is sequentially communicated with a fan coil, an electric two-way valve and a water supply cold pipe, and the electric two-way valve is arranged between the fan coil and the water supply cold pipe; the fan coil and the variable air volume control valve are respectively connected with the same control main valve through wires to form a group of variable air volume air conditioner tail end control device systems which are easy to distinguish cold and hot working conditions.

Preferably, a group of variable air volume air conditioner tail end control device systems which are easy to distinguish cold and hot working conditions correspond to an air conditioning room; each air-conditioning room is communicated through the same air supply pipe, and a plurality of branch pipe connectors are integrally formed on the air supply pipe corresponding to the number of rooms; each branch pipe connecting port is correspondingly connected with an air supply outlet of the air conditioner respectively to form the whole variable air volume air conditioner tail end control device system easy to distinguish cold and hot working conditions.

Preferably, 4 air-conditioning rooms can be set as a variable air volume air conditioner tail end control device system easy to distinguish cold and hot working conditions, and the system is in a full-air running state, and according to the temperature level contrast of the air supply temperature T1 of an air supply pipe of one air-conditioning room, the room set temperature T2 and the room actual measurement temperature T3, the electric two-way valve can be selected to be opened for cooling and heating, the air volume of a fan coil is regulated, or the water valve of the fan coil is closed, and the variable air volume control valve is regulated, wherein the specific operation is as follows:

s1: when the measured temperature T3 is higher than the set temperature T2 and the air supply temperature T1 is lower than the set temperature T2, opening an electric two-way valve to supply cold, if the temperature T3 is higher, increasing the air quantity of the fan coil, and if the temperature T3 is higher, increasing the air valve of the variable air quantity control valve;

s2: when the measured temperature T3 is lower than the set temperature T2 and the air supply temperature T1 is lower than the set temperature T2, turning off the air quantity of the fan coil, if the temperature T3 is lower, turning off a cold water valve of the fan coil, and if the temperature T3 is lower, turning off an air valve of the variable air quantity control valve;

s3: when the measured temperature T3 is higher than the set temperature T2 and the air supply temperature T1 is higher than the set temperature T2, opening an electric two-way valve to supply cold, if the temperature T3 is higher, increasing the air quantity of the fan coil, and if the temperature T3 is higher, closing an air valve of the variable air quantity control valve;

s4: when the measured temperature T3 is lower than the set temperature T2 and the air supply temperature T1 is higher than the set temperature T2, the air quantity of the fan coil is reduced, if the temperature T3 is lower, the cold water valve of the fan coil is closed, and if the temperature T3 is lower, the air valve of the variable air quantity control valve is enlarged.

The utility model has the beneficial effects that: the variable air volume tail end control device can realize the setting of the required temperature by a user, combines the two controllers into one by combining the two control modes of the fan coil and the variable air volume tail end, accurately controls the room temperature, better solves the problems that when the variable air volume of the existing air conditioner is controlled by adopting the two control modes respectively, the user easily judges errors and influences the fresh air volume supply, and has simple structure, and the original control function can be ensured and realized.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a conventional variable air volume air conditioner end control device;

FIG. 2 is a schematic diagram of a tail end control device of a variable air conditioner, which is provided by an embodiment of the utility model and is easy to distinguish cold and hot working conditions;

FIG. 3 is a schematic control diagram of the variable air volume tip and fan coil utility thermostat of FIG. 2.

Reference numerals illustrate:

an air conditioner air supply outlet 1, a fan coil 2, a variable air volume control valve 3, an electric two-way valve 4, an air supply pipe 5, a water supply cold pipe 6 and a control main valve 7.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Embodiment 1, as shown in fig. 2 to 3, comprises an air conditioner air supply outlet 1, a fan coil 2, a variable air volume control valve 3, an electric two-way valve 4, an air supply pipe 5, a water supply cold pipe 6 and a control main valve 7, wherein the air supply pipe 5 is mutually matched with the air conditioner air supply outlet 1 through a connecting port; a variable air volume control valve 3 is arranged above the air conditioner air supply outlet 1, and the variable air volume control valve 3 is connected with an air supply pipe 5 in a penetrating manner; the left side of the air conditioner air supply outlet 1 is sequentially communicated with a fan coil 2, an electric two-way valve 4 and a water supply cold pipe 6, and the electric two-way valve 4 is arranged between the fan coil 2 and the water supply cold pipe 6; the fan coil 2 and the variable air volume control valve 3 are respectively connected with the same control main valve 7 through wires to form a group of variable air volume air conditioner tail end control device systems which are easy to distinguish cold and hot working conditions.

Further, as shown in fig. 2, a group of variable air volume air conditioner end control device systems which are easy to distinguish cold and hot working conditions correspond to an air conditioning room; each air-conditioning room is communicated through the same air supply pipe 5, and a plurality of branch pipe connectors are integrally formed on the air supply pipe 5 corresponding to the number of rooms; each branch pipe connecting port is correspondingly connected with one air conditioner air supply outlet 1 respectively to form the whole variable air volume air conditioner tail end control device system easy to distinguish cold and hot working conditions.

Further, as shown in fig. 2, the system of the variable air volume air conditioner terminal control device easy to distinguish cold and hot working conditions is in an all-air operation state, and can be used for selectively opening the electric two-way valve 4 to supply cold and heat, adjusting the air volume of the fan coil 2, or closing the water valve of the fan coil 2, and adjusting the variable air volume control valve 3 according to the temperature comparison of the air supply temperature T1 of the air supply pipe, the room set temperature T2 and the room actual measurement temperature T3.

Further, as shown in fig. 2, four air-conditioning rooms may be set as the whole variable air volume air conditioner end control device system easy to distinguish cold and hot working conditions, wherein, taking room 3 as an example, the whole system is in a full air running state, and the measured supply air temperature T1 of the air supply pipe, room set temperature T2 and room measured temperature T3 of 4 time periods are shown in the following table:

in other embodiments, the number of air-conditioning rooms is not unique, and the air supply temperature T1, the room set temperature T2 and the room measured temperature T3 of the air supply pipe are also adjusted and changed correspondingly, which is not described in detail herein.

When in use, the specific operation method is as follows:

s1: when the measured temperature T3 is higher than the set temperature T2 and the air supply temperature T1 is lower than the set temperature T2, opening the electric two-way valve 4 for cooling, if the temperature T3 is higher, increasing the air quantity of the fan coil 2, and if the temperature T3 is higher, increasing the air valve of the variable air quantity control valve 3;

s2: when the measured temperature T3 is lower than the set temperature T2 and the air supply temperature T1 is lower than the set temperature T2, the air quantity of the fan coil 2 is turned off, if the temperature T3 is lower, the cold water valve of the fan coil 2 is turned off, and if the temperature T3 is lower, the air valve of the variable air quantity control valve 3 is turned off;

s3: when the measured temperature T3 is higher than the set temperature T2 and the air supply temperature T1 is higher than the set temperature T2, opening the electric two-way valve 4 for cooling, if the temperature T3 is higher, increasing the air quantity of the fan coil 2, and if the temperature T3 is higher, closing the air valve of the variable air quantity control valve 3;

s4: when the measured temperature T3 is lower than the set temperature T2 and the air supply temperature T1 is higher than the set temperature T2, the air quantity of the fan coil 2 is reduced, if the temperature T3 is lower, the cold water valve of the fan coil 2 is closed, and if the temperature T3 is lower, the air valve of the variable air quantity control valve 3 is enlarged.

The variable air volume tail end control device can realize the setting of the required temperature by a user, combines the two controllers into one by combining the two control modes of the fan coil and the variable air volume tail end, accurately controls the room temperature, better solves the problems that when the variable air volume of the existing air conditioner is controlled by adopting the two control modes respectively, the user easily judges errors and influences the fresh air volume supply, and has simple structure, and the original control function can be ensured and realized.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A variable air volume air conditioner terminal control device easy to distinguish cold and hot working conditions is characterized in that: the air conditioner comprises an air conditioner air supply outlet, a fan coil, a variable air volume control valve, an electric two-way valve, an air supply pipe, a water supply cold pipe and a control main valve, wherein the air supply pipe is mutually matched with the air conditioner air supply outlet through a connecting port; a variable air volume control valve is arranged above the air conditioner air supply outlet and is connected with the air supply pipe in a penetrating manner; the left side of the air supply outlet of the air conditioner is sequentially communicated with a fan coil, an electric two-way valve and a water supply cold pipe, and the electric two-way valve is arranged between the fan coil and the water supply cold pipe; the fan coil and the variable air volume control valve are respectively connected with the same control main valve through wires to form a group of variable air volume air conditioner tail end control device systems which are easy to distinguish cold and hot working conditions.

2. The variable air volume air conditioner end control device for easily distinguishing cold and hot working conditions according to claim 1, wherein: the air-conditioner room is corresponding to a group of variable air-conditioner tail end control device systems which are easy to distinguish cold and hot working conditions; each air-conditioning room is communicated through the same air supply pipe, and a plurality of branch pipe connectors are integrally formed on the air supply pipe corresponding to the number of rooms; each branch pipe connecting port is correspondingly connected with an air supply outlet of the air conditioner respectively to form the whole variable air volume air conditioner tail end control device system easy to distinguish cold and hot working conditions.