CN216769829U

CN216769829U - Anti-freezing device of water chilling unit

Info

Publication number: CN216769829U
Application number: CN202123049178.XU
Authority: CN
Inventors: 李春阳
Original assignee: Shanghai Hachi Mechanical Equipment Co ltd
Current assignee: Shanghai Hachi Mechanical Equipment Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-06-17
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to the technical field of water chilling units, in particular to an anti-freezing device of a water chilling unit. The technical scheme comprises the following steps: the compressor-type neutralization device comprises a compressor, a condenser, a neutralization tank and an evaporator, wherein a three-way pipe is fixedly sleeved at the output end of the compressor, one end, far away from the compressor, of the three-way pipe is communicated with the condenser through a connecting pipe a, the other end, far away from the compressor, of the three-way pipe is communicated with the neutralization tank through a connecting pipe c, the condenser is communicated with the neutralization tank through a connecting pipe b, the neutralization tank is communicated with the evaporator through a connecting pipe d, and the evaporator is communicated with the compressor through a connecting pipe e. The utility model solves the problem of poor freezing prevention timeliness of the existing water chilling unit.

Description

Anti-freezing device of water chilling unit

Technical Field

The utility model relates to the technical field of water chilling units, in particular to an anti-freezing device of a water chilling unit.

Background

In the prior art, a water-cooling unit generally enters a condenser through a pipeline through high-temperature and high-pressure refrigerant gas discharged by a compressor, condenses the refrigerant into a liquid state through heat exchange with cooling water, flows to a throttling valve through the pipeline to reduce the pressure and reduce the temperature and throttle the refrigerant, then enters an evaporator, exchanges heat with chilled water entering the evaporator in the evaporator, the low-temperature refrigerant absorbs heat and evaporates the heat and then returns to the compressor through the pipeline to complete a refrigeration cycle, the temperature of the water entering the evaporator is reduced to a user use temperature because the heat is absorbed by the refrigerant, and the water is supplied to a user water-cooling machine through a water outlet in the use process, the chilled water is frequently influenced by factors such as user load, unstable water flow and the like in field use to cause too low water temperature, it is known that the water can be frozen when the temperature of the water is lower than 0 ℃, and the evaporator of the water-cooling unit can be influenced when the chilled water is too low or lower than 0 ℃, the heat exchange tube of the evaporator can be frozen and cracked, so that the water chilling unit is damaged, and the whole equipment can be scrapped seriously.

The patent number CN210486172U discloses an anti-freezing evaporator and an anti-freezing water chilling unit thereof, the anti-freezing evaporator includes a barrel, a heat exchange tube disposed in the barrel, a water inlet tube and a water outlet tube connected to two ends of the heat exchange tube, and an inlet and an outlet disposed on the barrel, the water inlet tube, the water outlet tube and the barrel are wrapped with heat insulating layers, the heat exchange tube is provided with a predetermined number of heat insulating belts, the heat insulating layer and each heat insulating belt are provided with a cavity, the cavity is connected to a hot air tank, the water outlet tube and the outlet are provided with a temperature sensor and a pressure sensor respectively for detecting the temperature and the evaporation pressure of cooling water, when the temperature is lower than the temperature set by the temperature sensor or the evaporation pressure is lower than the evaporation pressure threshold set by the pressure sensor, hot air is conveyed to each heat insulating layer and the heat insulating belt, the cooling water and the anti-freezing evaporator are heated, and the problem that the unit is easy to damage in winter is solved.

However, when the water chilling unit in the patent heats the evaporator, the evaporator can be slowly heated only by operating the hot air tank, so that the heating timeliness is low, the buffering time for heating and cooling is long, the neutralization effect with cooling water is poor, and the heat exchange tubes of the evaporator are more easily frozen and cracked under the alternation of external heat and internal cooling.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-freezing device of a water chilling unit, which has high timeliness and solves the problems in the prior art.

The technical scheme of the utility model is as follows: the utility model provides a freeze-proof device of cooling water set, includes compressor, condenser, neutralization tank and evaporimeter, the fixed cover of output of compressor is equipped with the three-way pipe, and the one end that the compressor was kept away from to the three-way pipe is linked together through connecting pipe an and condenser, and the other end that the compressor was kept away from to the three-way pipe is linked together through connecting pipe c and neutralization tank, be linked together through connecting pipe b between condenser and the neutralization tank, be linked together through connecting pipe d between neutralization tank and the evaporimeter, be linked together through connecting pipe e between evaporimeter and the compressor.

Preferably, a throttle valve is installed on the connection pipe b.

Preferably, the connecting pipe c is provided with an electromagnetic valve, and the connecting pipe d is provided with a temperature sensor.

Preferably, the temperature sensor is connected with a PLC controller, and the electromagnetic valve is also connected with the PLC controller.

Preferably, the top of the neutralization box is provided with a motor, an output shaft of the motor is fixedly connected with a rotating shaft, and a plurality of stirring blades are welded on two sides of the rotating shaft along the height direction of the rotating shaft.

Preferably, one end of the connection pipe c communicating with the neutralization tank extends to the inside of the neutralization tank.

Compared with the prior art, the utility model has the following beneficial technical effects:

1: the utility model discloses the solenoid valve can be opened under PLC controller control when the refrigerated water crosses low or is less than 0 degree centigrade to the cooling water set, and the hot gas portion of compressor output can be carried to the neutralization incasement through connecting pipe c, and the neutralization of passing through the neutralization case reaches the purpose that adjusts the temperature, and not only the timeliness is high, and the buffer time is short, and neutralization effect is good moreover, avoids the heat exchange tube of frost crack evaporimeter.

2: this practical cooling water set directly utilizes the not refrigerated hot gas to carry out the problem of supplementary buffering cooling water, need not external equipment and carries out the auxiliary heating, has reduced use cost.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a water chiller according to the present invention;

fig. 2 is a schematic view of the internal structure of the neutralization tank of fig. 1.

Reference numerals: 1. a compressor; 2. a condenser; 3. a neutralization tank; 4. an evaporator; 5. a three-way pipe; 6. a connecting pipe a; 7. a connecting pipe b; 8. a connecting pipe c; 9. a connecting pipe d; 10. a connecting pipe e; 11. a throttle valve; 12. an electromagnetic valve; 13. a motor; 14. a temperature sensor; 15. a rotating shaft; 16. a stirring blade.

Detailed Description

The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1, the anti-freezing device for a water chilling unit provided by the utility model comprises a compressor 1, a condenser 2, a neutralization tank 3 and an evaporator 4, wherein an output end of the compressor 1 is fixedly sleeved with a three-way pipe 5, one end, far away from the compressor 1, of the three-way pipe 5 is communicated with the condenser 2 through a connecting pipe a6, the other end, far away from the compressor 1, of the three-way pipe 5 is communicated with the neutralization tank 3 through a connecting pipe c8, the condenser 2 is communicated with the neutralization tank 3 through a connecting pipe b7, the neutralization tank 3 is communicated with the evaporator 4 through a connecting pipe d9, and the evaporator 4 is communicated with the compressor 1 through a connecting pipe e 10.

In this embodiment: the throttle valve 11 is installed on the connecting pipe b7, the electromagnetic valve 12 is installed on the connecting pipe c8, the temperature sensor 14 is installed on the connecting pipe d9, the PLC is connected to the temperature sensor 14, and the electromagnetic valve 12 is also connected to the PLC.

When the compressor works normally, the electromagnetic valve 12 is in a closed state, high-temperature and high-pressure refrigerant gas discharged by the compressor 1 enters the condenser 2 through the three-way pipe 5 and the connecting pipe a6, the refrigerant is condensed into a liquid state through heat exchange with cooling water, then flows to the throttle valve 11 through the connecting pipe b7 to be subjected to pressure reduction, temperature reduction and throttling, then enters the neutralizing tank 3, passes through the neutralizing tank 3 and is conveyed into the evaporator 4 through the connecting pipe d9, the refrigerant exchanges heat with chilled water entering the evaporator 4, the low-temperature refrigerant absorbs heat to be evaporated and then returns to the compressor 1 through the connecting pipe e10 to complete a refrigeration cycle, the water entering the evaporator 4 is absorbed by the refrigerant because of heat, the temperature is reduced to a user use temperature, when the temperature sensor 14 detects that the chilled water is too low or lower than 0 ℃, the electromagnetic valve 12 is opened under the control of a PLC controller, and hot gas output by the compressor 1 is conveyed into the neutralizing tank 3 through the connecting pipe c8, through the neutralization of neutralization case 3 again reach the purpose that adjusts the temperature, not only the ageing is high, and the buffering time is short, and neutralization effect is good moreover, avoids the heat exchange tube of frost crack evaporimeter.

Example two

As shown in fig. 1, compared with the first embodiment, the antifreeze apparatus for a water chilling unit according to the present invention further includes a neutralization tank 3, a motor 13 is installed on the top of the neutralization tank 3, a rotating shaft 15 is fixedly connected to an output shaft of the motor 13, a plurality of stirring blades 16 are welded to both sides of the rotating shaft 15 along the height direction thereof, and one end of a connecting pipe c8, which is communicated with the neutralization tank 3, extends into the neutralization tank 3.

In the first embodiment, after part of hot gas is input into the compressor 1, the motor 13 is operated to drive the rotating shaft 15 and the stirring blades 16 to rotate, and the stirring blades 16 stir the hot gas and the cooling water, so that the hot gas and the cooling water are quickly and fully neutralized, and the timeliness of heat neutralization is greatly improved.

The above embodiments are merely some preferred embodiments of the present invention, and those skilled in the art can make various alternative modifications and combinations of the above embodiments based on the technical solution of the present invention and the related teaching of the above embodiments.

Claims

1. The utility model provides an freeze-proof device of cooling water set, includes compressor (1), condenser (2), neutralization box (3) and evaporimeter (4), its characterized in that: the fixed cover of output of compressor (1) is equipped with three-way pipe (5), and the one end that compressor (1) was kept away from in three-way pipe (5) is linked together through connecting pipe a (6) and condenser (2), and the other end that compressor (1) was kept away from in three-way pipe (5) is linked together through connecting pipe c (8) and neutralization case (3), be linked together through connecting pipe b (7) between condenser (2) and the neutralization case (3), be linked together through connecting pipe d (9) between neutralization case (3) and evaporimeter (4), be linked together through connecting pipe e (10) between evaporimeter (4) and compressor (1).

2. An anti-freezing device for a water chilling unit according to claim 1, characterized in that a throttle valve (11) is installed on the connection pipe b (7).

3. An anti-freezing device for a water chilling unit according to claim 1, characterized in that the electromagnetic valve (12) is installed on the connecting pipe c (8), and the temperature sensor (14) is installed on the connecting pipe d (9).

4. The antifreeze apparatus for water chilling unit according to claim 3, characterized in that a PLC controller is connected to said temperature sensor (14), and said solenoid valve (12) is also connected to the PLC controller.

5. The anti-freezing device of the water chilling unit according to claim 1, wherein a motor (13) is installed on the top of the neutralization tank (3), a rotating shaft (15) is fixedly connected to an output shaft of the motor (13), and a plurality of stirring blades (16) are welded to two sides of the rotating shaft (15) along the height direction of the rotating shaft.

6. An anti-freezing device for a water chilling unit according to claim 5, characterized in that the end of the connecting pipe c (8) communicating with the neutralization tank (3) extends to the inside of the neutralization tank (3).