CN213631071U - Water chilling unit - Google Patents
Water chilling unit Download PDFInfo
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- CN213631071U CN213631071U CN202022859543.2U CN202022859543U CN213631071U CN 213631071 U CN213631071 U CN 213631071U CN 202022859543 U CN202022859543 U CN 202022859543U CN 213631071 U CN213631071 U CN 213631071U
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Abstract
The utility model relates to a water chilling unit, which comprises a compressor (1), a condenser (2) and a throttling element (3), evaporimeter (4), storage box (5), heating pipe (6) and electric heater unit (7), condenser (2) are connected with compressor (1), throttling element (3) are connected with condenser (2), evaporimeter (4) are connected between throttling element (3) and compressor (1), the inside storage of storage box (5) has the coolant liquid, the coolant liquid carries out the heat exchange with the heat transfer medium in condenser (2) in order to cool off heat transfer medium, heating pipe (6) set up in the bottom of storage box (5), it has heating medium to circulate in heating pipe (6), heating medium is used for heating the coolant liquid, electric heater unit (7) set up in the bottom of storage box (5), electric heater unit (7) are configured to generate heat in order to heat the coolant liquid through the electric energy. The utility model discloses the cooling water set can prevent effectively that the coolant liquid from freezing, can satisfy the demand that uses the cooling water set throughout the year.
Description
Technical Field
The utility model relates to a refrigeration technology field especially relates to a water chilling unit.
Background
The evaporative condenser is an efficient and green refrigeration technology which utilizes a dry-wet bulb temperature difference as a driving force, can be applied to an evaporative water chilling unit, and cools a refrigerant in a heat exchange pipe through indirect evaporative cooling. For occasions with annual refrigeration requirements, in winter, water in the water tank can be frozen, and therefore normal use of the unit is affected.
It is noted that the information disclosed in this background section of the invention is only for enhancement of understanding of the general background of the invention, and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a water chilling unit solves the frozen problem when using in winter.
According to an aspect of the present invention, there is provided a water chiller, comprising:
a compressor;
the condenser is connected with the compressor;
the throttling element is connected with the condenser;
an evaporator connected between the throttling element and the compressor;
the storage tank is internally stored with cooling liquid, and the cooling liquid exchanges heat with the heat exchange medium in the condenser so as to cool the heat exchange medium;
the heating pipe is arranged at the bottom of the storage box, a heating medium flows in the heating pipe, and the heating medium is used for heating the cooling liquid; and
and the electric heating device is arranged at the bottom of the storage box and is configured to generate heat through electric energy so as to heat the cooling liquid.
In some embodiments, the heating tube is connected between the outlet of the compressor and the inlet of the throttling element.
In some embodiments, the chiller further comprises a first solenoid valve disposed between the outlet of the compressor and the heating pipe.
In some embodiments, the water chilling unit further comprises a temperature sensor for detecting the internal temperature of the storage tank, and a control device in signal connection with the temperature sensor, the first electromagnetic valve and the electric heating device to control the opening and closing of the first electromagnetic valve and the electric heating device according to the detection result of the temperature sensor.
In some embodiments, the electrical heating device comprises a heat tracing band.
In some embodiments, the heating pipe and/or the heat tracing band are installed at the bottom surface of the storage tank in an S-shape.
In some embodiments, the heating tube and the heat tracing band are arranged in parallel.
In some embodiments, the chiller further comprises a spray device connected to the storage tank, the spray device being disposed above the condenser to spray the cooling liquid onto an outer surface of the condenser.
In some embodiments, the chiller further comprises a fan disposed above the condenser to accelerate heat dissipation from the condenser.
In some embodiments, the cooling liquid comprises water.
Based on the technical scheme, the embodiment of the water chilling unit comprises the heating pipe, the cooling liquid can be heated through the heating medium in the heating pipe, and the phenomenon of icing of the cooling liquid is prevented; the water chilling unit also comprises an electric heating device, the electric heating device generates heat by using electric energy, and heat converted by the consumed electric energy is transferred to the cooling liquid to heat the cooling liquid, so that the freezing phenomenon of the cooling liquid is prevented; moreover, because the water chilling unit simultaneously comprises the heating pipe and the electric heating device, one of the heating pipe and the electric heating device can be flexibly selected to be used for heating the cooling liquid according to actual conditions, and different scene requirements are met; even if one of the heating pipe and the electric heating device fails, the anti-icing requirement can be met by the other of the heating pipe and the electric heating device; in addition, the heating pipe and the electric heating device can be used for heating the cooling liquid at the same time, so that the heating efficiency is improved, ice blocks can be quickly melted on the frozen occasions, the fault waiting time of the unit is reduced, and the unit can be put into use as soon as possible.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic diagram of an embodiment of the water chiller according to the present invention.
Fig. 2 is a schematic structural diagram of a storage tank in an embodiment of the water chiller according to the present invention.
In the figure:
1. a compressor; 2. a condenser; 3. a throttling element; 4. an evaporator; 5. a storage box; 6. heating a tube; 7. an electric heating device; 8. a spraying device; 9. a fan; 10. a first solenoid valve; 11. a filler; 12. a second solenoid valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the invention.
As shown in fig. 1, in some embodiments of the water chilling unit provided by the present invention, the water chilling unit includes a compressor 1, a condenser 2, a throttling element 3, an evaporator 4, a storage tank 5, a heating pipe 6 and an electric heating device 7, the condenser 2 is connected with the compressor 1, and the throttling element 3 is connected with the condenser 2. The evaporator 4 is connected between the throttling element 3 and the compressor 1, the cooling liquid is stored in the storage box 5, the cooling liquid exchanges heat with a heat exchange medium in the condenser 2 to cool the heat exchange medium, the heating pipe 6 is arranged at the bottom of the storage box 5, the heating medium flows in the heating pipe 6 and is used for heating the cooling liquid, the electric heating device 7 is arranged at the bottom of the storage box 5, and the electric heating device 7 is configured to generate heat through electric energy to heat the cooling liquid.
In the above embodiment, the water chilling unit includes the heating pipe 6, and the cooling liquid can be heated by the heating medium in the heating pipe 6, so as to prevent the cooling liquid from being frozen; the water chilling unit further comprises an electric heating device 7, the electric heating device 7 generates heat by utilizing electric energy, the heat converted by the consumed electric energy is transferred to the cooling liquid to heat the cooling liquid, and the phenomenon of icing of the cooling liquid is prevented.
In the above embodiment, because the water chilling unit includes the heating pipe 6 and the electric heating device 7 at the same time, one of the heating pipe 6 and the electric heating device 7 can be flexibly selected according to actual conditions to heat the coolant, and different scene requirements are met. For example, in the case where it is inconvenient to supply a heating medium, the electric heating device 7 may be used to heat the coolant; when power is inconvenient to supply, the heating pipe 6 can be adopted to heat the cooling liquid.
In the above embodiment, the water chilling unit includes both the heating pipe 6 and the electric heating device 7, even if one of the heating pipe 6 and the electric heating device 7 fails, the ice protection requirement can be met by the other one of the heating pipe 6 and the electric heating device 7, and the problem that the ice cannot be prevented when only one heating mode fails is avoided.
In addition, the water chilling unit can also utilize the heating pipe 6 and the electric heating device 7 to heat the cooling liquid at the same time, so that the heating efficiency is improved, ice blocks can be quickly melted on the frozen occasions, the unit fault waiting time is reduced, and the unit can be put into use as soon as possible.
The utility model provides a water chilling unit embodiment does not receive external environment temperature's influence, even use this water chilling unit winter, also can realize better anti-icing effect, satisfies the demand that uses water chilling unit and not ice throughout the year.
In some embodiments, the heating medium may be selected from a variety of options, such as hot water or a refrigerant with a temperature higher than the coolant.
In some embodiments, the heating pipe 6 is connected between the outlet of the compressor 1 and the inlet of the restriction element 3. In the embodiments, the heating medium in the heating pipe 6 is the refrigerant from the compressor 1, and the refrigerant from the compressor 1 is used to heat the cooling liquid, so that the introduction of a new medium can be avoided, the self-sufficiency in the unit is realized, and the unit cost is reduced.
The import of heating pipe 6 and the exit linkage of compressor 1, the export of heating pipe 6 and throttling element 3's access connection, after setting up like this, the refrigerant after getting into heating pipe 6 and the heat transfer of condenser 2 from compressor 1 can carry out the process of a step-down cooling through throttling element 3 again after flowing out from heating pipe 6, avoids influencing evaporator 4's performance.
In some embodiments, the electrical heating means 7 comprises a heat tracing band. After the electric tracing heat belt is connected with a power supply, electric energy can be converted into heat energy to be emitted, the heat energy is transferred to cooling liquid to heat the cooling liquid, and icing is prevented.
As shown in fig. 2, in some embodiments, the heating pipe 6 and/or the heat trace band are installed at the bottom surface of the storage tank in an S-shape. The heating pipe 6 and/or the heat tracing band are/is arranged in an S shape, so that the contact area of the heating pipe 6 and/or the heat tracing band and the storage box 5 can be increased, the heat exchange area is increased, the heating efficiency is improved, and the anti-icing effect is improved.
In some embodiments, the heating tube 6 and the heat trace are arranged in parallel, i.e. the heating tube 6 and the heat trace are aligned like two parallel tracks.
In the embodiment shown in fig. 2, the heating pipe 6 and the heat trace band are arranged in parallel, and both the heating pipe 6 and the heat trace band are arranged in an S-shape. This arrangement can save the arrangement space while increasing the contact area of the heating pipe 6 and the heat trace band with the storage tank 5 as much as possible.
In some embodiments, the water chilling unit further comprises a spray device 8 connected to the storage tank 5, the spray device 8 being disposed above the condenser 2 to spray the cooling liquid on the outer surface of the condenser 2.
Through setting up spray set 8, can make coolant liquid and condenser 2 contact through the mode of spraying, realize that the coolant liquid carries out the heat transfer with the heat transfer medium in the condenser 2, and then realize the cooling effect to heat transfer medium.
The spraying device 8 comprises a mounting frame and a plurality of spray heads, and the plurality of spray heads are mounted on the mounting frame.
And a second electromagnetic valve 12 is arranged on a connecting pipeline between the spraying device 8 and the storage box 5, the second electromagnetic valve 12 is used for controlling the flow of the pipeline where the second electromagnetic valve is arranged, and after the second electromagnetic valve 12 is opened, the water yield of the spraying device 8 can be adjusted by adjusting the opening size of the second electromagnetic valve 12. By opening or closing the second solenoid valve 12, it is possible to control whether the shower device 8 is operated.
In some embodiments, the chiller further comprises a fan 9, the fan 9 being disposed above the condenser 2 to accelerate heat dissipation from the condenser 2. By arranging the fan 9, the heat exchange efficiency of the heat exchange medium in the condenser 2 can be further increased. The fan 9 may be an axial flow fan or the like.
In some embodiments, the water chilling unit further comprises a first solenoid valve 10 disposed between the outlet of the compressor 1 and the heating pipe 6. The first electromagnetic valve 10 is used for controlling the flow of the connecting pipeline between the outlet of the compressor 1 and the inlet of the heating pipe 6, and after the first electromagnetic valve 10 is opened, the flow of the heating medium in the heating pipe 6 can be adjusted by adjusting the opening size of the first electromagnetic valve 10. By opening or closing the first solenoid valve 10, it is possible to control whether or not the heating medium is fed into the heating pipe 6.
In some embodiments, the water chilling unit further includes a temperature sensor for detecting the internal temperature of the storage tank 5, and a control device in signal connection with the temperature sensor, the first solenoid valve 10 and the electric heating device 7 to control the opening and closing of the first solenoid valve 10 and the electric heating device 7 according to the detection result of the temperature sensor.
In some embodiments, the chiller further comprises a fill 11, the fill 11 being disposed above the storage tank 5. Through setting up filler 11, can increase heat transfer area, strengthen condenser 2's heat transfer effect. The filler 11 may be paper film or PVC.
In some embodiments, the cooling fluid comprises water and the chiller is a water-cooled chiller.
The following explains the working process of an embodiment of the water chiller of the present invention:
as shown in fig. 1 and 2, the cooling liquid stored in the storage tank 5 is water, a heating pipe 6 and an electric heating device 7 are installed on the bottom surface of the storage tank 5, and the heating pipe 6 and the electric heating device 7 are arranged in parallel and are both arranged in an S shape.
The refrigerant cycle of the water chilling unit comprises two loops, one loop is a main loop cycle, a high-temperature and high-pressure liquid refrigerant generated in a compressor 1 enters a condenser 2 for cooling, the high-temperature and high-pressure liquid is changed into a medium-temperature and high-pressure liquid after releasing heat, then the medium-temperature and high-pressure liquid is changed into a low-temperature and low-pressure liquid through the throttling action of a throttling element 3, the low-temperature and low-pressure liquid enters an evaporator 4, and the low-temperature and low-pressure gas obtained after evaporation enters; the other loop is bypass circulation, in winter or other scenes easy to freeze, except for main loop circulation, a part of high-temperature and high-pressure liquid refrigerant generated in the compressor 1 flows into the heating pipe 6, and the refrigerant in the heating pipe 6 exchanges heat with the cooling liquid in the storage tank 5, so that the heating of the cooling liquid is realized, and the freezing phenomenon of the cooling liquid is prevented. When the refrigerant in the heating pipe 6 is not enough to realize the anti-icing effect, the electric heating device 7 and the power supply can be switched on, the cooling liquid is heated through the electric heating device 7, and the anti-icing effect is improved.
The control flow of the water chilling unit in each embodiment includes:
setting a preset temperature T1;
detecting the internal temperature T2 of the storage tank 5;
comparing the internal temperature T2 with the preset temperature T1, and if T2 is not less than T1, controlling the first electromagnetic valve 10 to be kept closed and powering off the electric heating device 7; if T2 is less than T1, the first electromagnetic valve 10 is controlled to be opened, and the electric heating device 7 is still powered off; and
after the first solenoid valve 10 is opened for a preset time, the internal temperature T2 of the storage tank 5 is continuously detected, the internal temperature T2 and the preset temperature T1 are compared, and if the comparison result is that T2 is less than T1, the electric heating device 7 is controlled to be powered on.
In some embodiments, when the water chilling unit is started, the initial state of the first electromagnetic valve 10 is a closed state;
setting the target value of the anti-icing temperature of the water chilling unit as T1, wherein the target value is a preset temperature and can be changed according to actual requirements;
the temperature T2 of the storage box 5 is detected in real time through a temperature sensor arranged at the bottom of the storage box 5, and if the temperature T2 is more than or equal to the temperature T1, the control device controls the first electromagnetic valve 10 to be kept closed; if T2 is less than T1, the control device controls the first electromagnetic valve 10 to be opened so as to prevent the cooling liquid from freezing;
if T2 is still smaller than T1 after the first solenoid valve 10 is opened, the control device controls the electric heating device 7 to be powered on, and the cooling liquid is heated simultaneously through the heating pipe 6 and the electric heating device 7, so that freezing is prevented.
When the water chilling unit stops or breaks down, if T2 is more than or equal to T1, the control device does not act; if T2 < T1, the control device controls the electric heating device 7 to be energized, and the electric heating device 7 heats the coolant to prevent freezing.
When the water chilling unit stops or breaks down, the compressor 1 is in a non-working state, the heating mode through the heating pipe 6 is not convenient to implement, and the heating mode through the electric heating device 7 is not influenced by the working state of the compressor 1, so that the anti-icing requirement when the water chilling unit stops or breaks down can be met, and the normal operation of the unit is ensured.
The utility model provides an each embodiment of cooling water set can be applied to refrigeration plant such as central air conditioning.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the utility model discloses a do not deviate from under the prerequisite of the principle, still can be right the utility model discloses a specific embodiment modifies or carries out the equivalent replacement to some technical features, and these are modified and should be covered with the equivalent replacement in the middle of the technical scheme scope of the utility model.
Claims (10)
1. A chiller, comprising:
a compressor (1);
a condenser (2) connected to the compressor (1);
a throttle element (3) connected to the condenser (2);
-an evaporator (4) connected between the throttling element (3) and the compressor (1);
a storage tank (5) in which a coolant is stored, the coolant exchanging heat with a heat exchange medium in the condenser (2) to cool the heat exchange medium;
the heating pipe (6) is arranged at the bottom of the storage box (5), a heating medium flows through the heating pipe (6), and the heating medium is used for heating the cooling liquid; and
an electric heating device (7) disposed at a bottom of the storage tank (5), the electric heating device (7) being configured to generate heat by electric energy to heat the coolant.
2. Water chilling unit according to claim 1, characterized in that the heating pipe (6) is connected between the outlet of the compressor (1) and the inlet of the throttling element (3).
3. Water chilling unit according to claim 2, further comprising a first solenoid valve (10) arranged between the outlet of the compressor (1) and the heating pipe (6).
4. The water chilling unit according to claim 3, characterized by further comprising a temperature sensor for detecting the internal temperature of the storage tank (5) and a control device in signal connection with the temperature sensor, the first solenoid valve (10) and the electric heating device (7) for controlling the opening and closing of the first solenoid valve (10) and the electric heating device (7) according to the detection result of the temperature sensor.
5. Water chilling unit according to claim 1, characterized in that the electrical heating device (7) comprises a heat tracing band.
6. Water chilling unit according to claim 5, characterized in that the heating pipe (6) and/or the heat tracing band is/are mounted in an S-shape on the bottom surface of the storage tank (5).
7. Water chilling unit according to claim 5 or 6, characterized in that the heating pipe (6) and the heat tracing band are arranged in parallel.
8. The water chilling unit according to claim 1, further comprising a spray device (8) connected to the storage tank (5), the spray device (8) being disposed above the condenser (2) to spray the cooling liquid onto an outer surface of the condenser (2).
9. The water chilling unit according to claim 1, further comprising a fan (9), the fan (9) being disposed above the condenser (2) to accelerate heat dissipation from the condenser (2).
10. The water chilling unit according to claim 1, wherein the cooling fluid includes water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022859543.2U CN213631071U (en) | 2020-12-02 | 2020-12-02 | Water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022859543.2U CN213631071U (en) | 2020-12-02 | 2020-12-02 | Water chilling unit |
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| Publication Number | Publication Date |
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| CN213631071U true CN213631071U (en) | 2021-07-06 |
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| CN202022859543.2U Active CN213631071U (en) | 2020-12-02 | 2020-12-02 | Water chilling unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378129A (en) * | 2020-12-02 | 2021-02-19 | 珠海格力电器股份有限公司 | Water chilling unit and control method thereof |
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2020
- 2020-12-02 CN CN202022859543.2U patent/CN213631071U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378129A (en) * | 2020-12-02 | 2021-02-19 | 珠海格力电器股份有限公司 | Water chilling unit and control method thereof |
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