CN208090997U - A kind of evaporation cooling type cold water unit with continuous cooling function - Google Patents
A kind of evaporation cooling type cold water unit with continuous cooling function Download PDFInfo
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- CN208090997U CN208090997U CN201820279792.4U CN201820279792U CN208090997U CN 208090997 U CN208090997 U CN 208090997U CN 201820279792 U CN201820279792 U CN 201820279792U CN 208090997 U CN208090997 U CN 208090997U
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Abstract
The utility model discloses a kind of evaporation cooling type cold water units with continuous cooling function, including controller, heat-exchange system, refrigerant-cycle systems and cooling water recirculation system；Refrigerant-cycle systems include compressor, cooling coil group and refrigerator pipes；Cooling coil group includes no less than two sequentially connected cooling coils, and the import of at least one cooling coil is provided with the solenoid valve communicated to connect with controller, and liquid outlet is provided with the check valve for preventing refrigerant from flowing back.The utility model is designed reasonably, it is simple in structure, it is easy to control, unit reliable and stable carry out refrigerating operaton at low ambient temperatures can be made, the handpiece Water Chilling Units for meeting user demand the utility model are of low cost, convenient for installation and maintenance, are conducive to the popularization and use of product.
Description
Technical field
The utility model is related to a kind of cooling equipment, more particularly to a kind of transpiration-cooled with continuous cooling function is cold
Water dispenser group.
Background technology
In the evaporation cooling type cold water machine cooling system of early stage, does not account for unit and use in winter, in low temperature environment
(humidity≤15.5 DEG C) will appear condensation temperature low (condensation temperature has been less than 20 DEG C) problem when using, longtime running has big
The liquid accumulation of amount is easily accessible compressor in evaporator, causes compressor liquid hammer, can not be continuous in low temperature environment for a long time
Operation.Evaporation cooling type cold water Unit Low refrigeration modes generally add the form that singly compresses switch using wind turbine at present.
Wind turbine, which adds singly to compress switch to be practically without, really solves the problems, such as that winter unit freezes, only when pressure value is as low as setting
After pressure value lower limit, wind turbine is out of service.When singly compress switch reach the setting value upper limit after, wind turbine brings into operation.Due to singly pressing off
It is simple to close design, precision is low, and pressure value has retardance.Do not ensure that unit can in condensation temperature 20 DEG C operate above.Meeting
Compressor air suction band liquid is caused, liquid hammer is formed.And the frequent start-stop of condensation fan motor can be caused, motor is damaged.
Utility model content
Purpose of utility model：The utility model provides a kind of evaporation cooling type cold water machine with continuous cooling function
Group can control handpiece Water Chilling Units continuous operation under ultralow temperature.
Technical solution：To solve the above-mentioned problems, the utility model provides a kind of evaporation with continuous cooling function
Cooled handpiece Water Chilling Units, including controller, heat-exchange system, refrigerant-cycle systems and cooling water recirculation system；
Refrigerant-cycle systems include compressor, cooling coil group, connection compressor refrigerant liquid outlet and cooling coil
First refrigerator pipes of group, connection cooling coil group refrigerant outlet and the second refrigerator pipes of heat-exchange system and it is connected to heat exchange
The third refrigerator pipes of system and compressor refrigerant inlet；
For the ease of being accurately controlled to cooling effect, cooling coil group includes no less than two sequentially connected cooler pans
Pipe, the inlet of each cooling coil are connected to the first refrigerator pipes, and the inlet of the cooling coil is connected to the first refrigerator pipes；
The cooling coil is divided into the first cooling coil and the second cooling coil；Second cooling coil is connected with the second refrigerator pipes；
The first cooling coil inlet is provided with the solenoid valve communicated to connect with the controller；It is equipped with around cooling coil group
With the blower fan group of controller communication connection；
Preferably, cooling coil group includes 2-4 cooling coil, corresponding with the quantity of wind turbine in blower fan group.
The pressure sensor communicated to connect with controller is equipped in second refrigerator pipes, the second refrigerator pipes are connected with liquid storage device,
Expansion valve and device for drying and filtering.
Above-mentioned refrigerant-cycle systems cool down it with cooling water recirculation system, and cooling water recirculation system includes setting
Above cooling tube group with controller communication connection spray equipment and be set to below cooler pan group by water pump with spray
The drip tray of shower device connection.
The liquid outlet of first cooling coil is provided with the check valve for preventing other cooling coil refrigerants from flowing back.
Advantageous effect：The utility model is by different grading control wind turbines, water pump and the solenoid valve of system pressure, according to pressure
Force value starts or stops successively, ensures handpiece Water Chilling Units continuous operation at low temperature；Unit high pressure pressure is controlled using pressure sensor
Power is constant, to ensure that handpiece Water Chilling Units are run under low condensation temperature；Controller control is accurate, water chilling unit system stability
It is high；The utility model classification is provided with cooling coil and wind turbine, accurately controls cooling effect of the handpiece Water Chilling Units in low temperature environment；
The utility model is provided with one-way cock on cooling coil, and refrigerant goes out when can be not involved in operation to avoid part cooling coil
It now flows back, handpiece Water Chilling Units operation is safer.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Specific implementation mode
The utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of evaporation cooling type cold water unit with continuous cooling function, including controller, heat exchange
System, refrigerant-cycle systems and cooling water recirculation system；Refrigerant-cycle systems include compressor 1, pass through the first refrigerator pipes
The cooling coil group 2 being connect with compressor outlet, cooling coil group are made of sequentially connected 2 cooling coils, each cooling
The inlet of coil pipe is connect with the first refrigerator pipes, and 2 cooling coils are respectively the first cooling coil and the second cooling coil, and first
The liquid outlet of cooling coil is connected with the inlet of the second cooling coil, and the cooling coil being connect with the second refrigerator pipes is second cold
But coil pipe, the inlet of the first cooling coil are provided with the solenoid valve 12 communicated to connect with controller, and the first cooling coil goes out
Liquid mouth is provided with the positive check valve 13 for preventing refrigerant from flowing back, and the liquid outlet of the second cooling coil passes through the second refrigerator pipes and heat
Exchange system 14 is connected, and the second refrigerator pipes are connected with fluid reservoir 3, device for drying and filtering 4 and expansion valve 5 in turn, in the second refrigerator pipes
It is additionally provided with the pressure sensor 11 of the model SK0422A communicated to connect with controller, Pressure Sensor Precision is high, can be fine
The pressure value of detecting system；The outlet of heat-exchange system is connect with compressor inlet by third refrigerator pipes.
Two Fans 6 communicated to connect with controller, respectively the first wind turbine and second are equipped with around cooling coil group
Wind turbine；
Above-mentioned refrigerant-cycle systems cool down it with cooling water recirculation system, and cooling water recirculation system includes setting
The spray equipment 7 communicated to connect with controller 8 above cooling tube group and be set to below cooler pan group by water pump 9 and
The drip tray 10 of spray equipment connection.
Pressure sensor 11 utilizes piezoresistive effect principle, the variation of system pressure value to directly act on the diaphragm of sensor
On, diaphragm generates the micro-displacement directly proportional to pressure medium, so that the resistance value of sensor is changed, is detected using electronic circuit
This variation, and convert one 4-20ma canonical measure signal for corresponding to this pressure of output.
Handpiece Water Chilling Units are under non-cryogenic environment, and pressure limit is in P > 1.4MPa, and the method for operation of entire handpiece Water Chilling Units is such as
Under：
Solenoid valve 12 is opened, and the high pressure, high temperature refrigerant from compressor 1 out can carry out cold by two groups of cooling coils 2
But, the solenoid valve 12 of the first cooling coil inlet is opened, and 2 cooling coils simultaneously participate in the cooling of refrigerant.Water pump 9 will connect
Cooling water in water pond 10 is transported to spray thrower 7, and cooling water is sprayed onto on cooling coil by spray thrower 7, the first wind turbine and second
Wind turbine is opened simultaneously, realizes the rapid heat dissipation of cooling coil, increases cooling effect.Cooling water is collected by drip tray 10,
Water in drip tray is transported to spray thrower 7 by water pump 9 again, realizes the cycle of cooling water.It is real by the refrigerant of cooling coil
After now cooling down, by the device for drying and filtering 4 and expansion valve 5 in system, into heat-exchange system 14, chilled water passes through heat and hands at this time
The import 1401 for changing system enters, and realizes that heat exchange, chilled water after cooling realize cooling by 1402 discharge of outlet.
In low temperature environment, when pressure P≤1.0MPa in system, solenoid valve 12 is closed, water pump 9 and wind turbine 6 stop fortune
Row, the high pressure, high temperature refrigerant from compressor 1 out are cooled down by the second cooling coil, the first cooling coil liquid outlet
On check valve prevent the refrigerant of the second coil pipe from flowing back, refrigerant then passes through device for drying and filtering 4 and expansion valve 5, into heat
Exchange system 14, at this time chilled water entered by the import 1401 of heat-exchange system, realize that heat exchange, chilled water after cooling are logical
1402 discharge of outlet is crossed, realizes cooling.
As 1.0 < P≤1.2MPa of pressure in system, solenoid valve 12 is opened, and water pump 9 is run, from compressor 1 out
High pressure, high temperature refrigerant can be cooled down by two groups of cooling coils, the first cooling coil and the second cooling coil simultaneously participate in
Cooling water is transported to spray thrower 7 by the cooling of refrigerant, water pump 9, and the cooling water sprayed in spray thrower 7 carries out cooling coil cold
But, subsequent refrigerant passes through device for drying and filtering 4 and expansion valve 5, and into heat-exchange system 14, chilled water passes through heat-exchange system
Import 1401 enters, and realizes that heat exchange, chilled water after cooling realize cooling by 1402 discharge of outlet.
When the pressure in system is in 1.2MPa < P≤1.4MPa ranges, pressure sensor 11 controls electricity by controller 8
The unlatching of magnet valve 12, water pump 9 and the first fan operation, the high pressure, high temperature refrigerant from compressor 1 out pass through two groups of coolings
Coil pipe 2 is cooled down, and cooling water is sprayed onto on cooling coil by spray thrower 7, and the first wind turbine radiates to cooling coil, and water pump 9 will
Water in drip tray is transported to spray thrower 7, realizes the cycle of cooling water.After the refrigerant of cooling coil realizes cooling, warp
Cross device for drying and filtering 4 and expansion valve 5, into heat-exchange system 14, at this time chilled water by the import 1401 of heat-exchange system into
Enter, realizes that heat exchange, chilled water after cooling realize cooling by 1402 discharge of outlet.
The utility model is by pressure sensor, to using such mode, pressure sensor that can realize to entire cooler
Group accurately controls, and realizes under cryogenic conditions, the continuous operation of entire handpiece Water Chilling Units, and control unit high-pressure is constant, and control is cold
But effect.In addition, Pressure Sensor Precision is high, pressure value can be detected very well, to ensure handpiece Water Chilling Units in low condensation temperature
Lower operation；Controller control is accurate, and water chilling unit system stability is high.
The utility model is real by the rational design to all parts in refrigerant-cycle systems and cooling water recirculation system
Show and the cooling effect of handpiece Water Chilling Units has been accurately controlled, and is improved simple in structure, it is easy to control, unit can be made in low temperature
Reliable and stable carry out refrigerating operaton under environment.
Claims (5)
1. a kind of evaporation cooling type cold water unit with continuous cooling function, which is characterized in that including controller, heat exchange series
System, refrigerant-cycle systems and cooling water recirculation system；
The refrigerant-cycle systems include compressor, cooling coil group, connection compressor refrigerant liquid outlet and cooling coil
First refrigerator pipes of group, connection cooling coil group refrigerant outlet and the second refrigerator pipes of heat-exchange system and it is connected to heat exchange
The third refrigerator pipes of system and compressor refrigerant inlet；
The cooling coil group includes no less than two sequentially connected cooling coils, the inlet of the cooling coil and first
Refrigerator pipes are connected to；The cooling coil is divided into the first cooling coil and the second cooling coil；Second cooling coil and second
Refrigerator pipes are connected；The first cooling coil inlet is provided with the solenoid valve communicated to connect with the controller；
The blower fan group communicated to connect with controller is equipped with around the cooling coil group；
The pressure sensor communicated to connect with controller is equipped in second refrigerator pipes；
The cooling water system includes the spray equipment communicated to connect with controller, the Yi Jishe being set to above cooling coil group
The drip tray being connect with spray equipment by water pump being placed in below cooler pan group.
2. the evaporation cooling type cold water unit according to claim 1 with continuous cooling function, which is characterized in that described
The liquid outlet of first cooling coil is provided with the check valve for preventing other cooling coil refrigerants from flowing back.
3. the evaporation cooling type cold water unit according to claim 1 with continuous cooling function, which is characterized in that described
Cooling coil group includes 2-4 cooling coil.
4. the evaporation cooling type cold water unit according to claim 1 with continuous cooling function, which is characterized in that described
The quantity of wind turbine is corresponding with the quantity of the cooling coil of cooling coil group in blower fan group.
5. the evaporation cooling type cold water unit according to claim 1 with continuous cooling function, which is characterized in that described
Second refrigerator pipes are connected with device for drying and filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820279792.4U CN208090997U (en) | 2018-02-28 | 2018-02-28 | A kind of evaporation cooling type cold water unit with continuous cooling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820279792.4U CN208090997U (en) | 2018-02-28 | 2018-02-28 | A kind of evaporation cooling type cold water unit with continuous cooling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208090997U true CN208090997U (en) | 2018-11-13 |
Family
ID=64060879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820279792.4U Active CN208090997U (en) | 2018-02-28 | 2018-02-28 | A kind of evaporation cooling type cold water unit with continuous cooling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208090997U (en) |
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2018
- 2018-02-28 CN CN201820279792.4U patent/CN208090997U/en active Active
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