CN203454440U - Cold water set - Google Patents

Cold water set Download PDF

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Publication number
CN203454440U
CN203454440U CN201320355802.5U CN201320355802U CN203454440U CN 203454440 U CN203454440 U CN 203454440U CN 201320355802 U CN201320355802 U CN 201320355802U CN 203454440 U CN203454440 U CN 203454440U
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China
Prior art keywords
compressor
condenser
low pressure
evaporimeter
liquid trap
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CN201320355802.5U
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Chinese (zh)
Inventor
夏雨亮
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Chongqing Midea General Refrigeration Equipment Co Ltd
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Chongqing Midea General Refrigeration Equipment Co Ltd
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Abstract

The utility model discloses a cold water set comprising a compressor, a condenser, a high-pressure ball float valve, a low-pressure liquid trap, an evaporator and a throttling assembly, wherein the compressor is provided with an air exhaust opening and an air returning opening, the inlet of the condenser is connected with the air exhaust opening of the compressor, the high-pressure ball float valve is connected with the outlet of the condenser to adjust the liquid level of the condenser, the low-pressure liquid trap is provided with a liquid inlet and an outlet connected with the air returning opening of the compressor, the outlet of the evaporator is connected with the liquid inlet of the liquid trap, the inlet of the evaporator is connected with the high-pressure ball float valve through a pipe, a portion of the pipe is situated in the low-pressure liquid trap, and the throttling assembly is arranged on the pipe adjacent to the inlet of the evaporator. According to the novel cold water set, the outlet of the condenser has certain degree of supercooling, and the supercooling effect of high-pressure liquid refrigerant can be improved. The air suction the compressor having liquid can be prevented, and refrigerating capacity and energy efficiency ratio of the cold water set are improved. The service lifetime of the compressor is prolonged.

Description

Handpiece Water Chilling Units
Technical field
The utility model relates to art of refrigeration units, especially relates to a kind of handpiece Water Chilling Units.
Background technology
Existing handpiece Water Chilling Units has following shortcoming: 1, the degree of supercooling of condenser cannot be controlled automatically, in order to increase degree of supercooling, generally in cold water group, increase Intermediate Heat Exchanger at present, because the heat transferring medium in Intermediate Heat Exchanger is low pressure refrigerant vapor and high pressure refrigerant liquid, thereby make the degree of supercooling effect of increase limited.2, the easy absorbing gas belt liquid of the compressor in full-liquid type handpiece Water Chilling Units, thereby easily cause compressor to run oil and compressor hydraulic compression, compressor is damaged, current full-liquid type handpiece Water Chilling Units is for fear of compressor band liquid, what evaporator tube was done is very large, and heat exchanger tube position is very low, caused the increase of heat exchanger cost.
Utility model content
The utility model is intended at least solve one of technical problem existing in prior art.For this reason, an object of the present utility model is to propose a kind of effective handpiece Water Chilling Units of degree of supercooling of avoiding compressor air suction band liquid and increase.
According to handpiece Water Chilling Units of the present utility model, comprising: compressor, described compressor has exhaust outlet and gas returning port; Condenser, the entrance of described condenser is connected with the exhaust outlet of described compressor; High side float valve, described high side float valve and the outlet of described condenser are connected to adjust the liquid level of described condenser; Low pressure liquid trap, described low pressure liquid trap is provided with inlet and delivery outlet, and described delivery outlet is connected with the gas returning port of described compressor; Evaporimeter, the outlet of described evaporimeter is connected with the inlet of described low pressure liquid trap, between the entrance of described evaporimeter and described high side float valve, by pipeline, is connected, and a part for described pipeline is positioned at described low pressure liquid trap; Restricting element, described restricting element is located on described pipeline and the entrance setting of contiguous described evaporimeter.
According to handpiece Water Chilling Units of the present utility model, by the outlet at condenser, be provided with high side float valve, thereby make condensator outlet there is certain degree of supercooling, guarantee that condenser has the liquid level of certain altitude and compares and can reduce costs with traditional control liquid level method, again owing to being provided with low pressure liquid trap, not only can make the refrigerant vapour of flash-pot to return compressor inside after heating, avoid compressor air suction band liquid and can increase the heat exchange area of evaporimeter, simultaneously can make not evaporation in flash-pot completely refrigerant liquid in low pressure liquid trap inside because Action of Gravity Field is placed in bottom, this liquid carries out heat exchange with the high-pressure refrigerant from high side float valve, improve the degree of supercooling effect of high pressure refrigerant liquid, thereby can further avoid compressor air suction band liquid and can increase refrigerating capacity and the Energy Efficiency Ratio of handpiece Water Chilling Units, improve the life-span of compressor.
In addition, according to handpiece Water Chilling Units of the present utility model, also there is following additional technical feature:
According to embodiment more of the present utility model, described evaporimeter is shell and tube evaporator, and described shell and tube evaporator comprises cylindrical shell and a plurality of heat exchanger tube, and described a plurality of heat exchanger tubes taking up room in described cylindrical shell at least accounts for 1/2nd of space in described cylindrical shell.Thereby can utilize as much as possible the space in cylindrical shell, reduce the waste in the space in cylindrical shell, improve the heat exchange area utilization rate of evaporimeter, reduce the cost of evaporimeter.
Preferably, 2/3rds of the space in the described cylindrical shell that takes up room of described a plurality of heat exchanger tube in described cylindrical shell.Thereby can utilize as much as possible the space in cylindrical shell, reduce the waste in the space in cylindrical shell, improve the heat exchange area utilization rate of evaporimeter, reduce the cost of evaporimeter.
Particularly, a described part for described pipeline has first paragraph and the second segment that along continuous straight runs extends, and described first paragraph is positioned at the top of described low pressure liquid trap, and described second segment is positioned at the bottom of described low pressure liquid trap.Thereby can guarantee to avoid compressor air suction band liquid, and can guarantee to increase refrigerating capacity and the Energy Efficiency Ratio of handpiece Water Chilling Units.
Further, the linkage section between described first paragraph and described second segment is linear.Thereby the length that can reduce pipeline, further reduces costs.
Particularly, described restricting element is expansion valve.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is according to the schematic diagram of the handpiece Water Chilling Units of an embodiment of the utility model, and wherein evaporimeter is flooded evaporator;
Fig. 2 is according to the schematic diagram of the handpiece Water Chilling Units of another embodiment of the utility model, and wherein evaporimeter is dry evaporator;
Fig. 3 is the profile of the shell and tube evaporator in the handpiece Water Chilling Units shown in Fig. 1.
Reference numeral:
Handpiece Water Chilling Units 100, compressor 1, exhaust outlet 10, gas returning port 11, condenser 2,
High side float valve 3, low pressure liquid trap 4, inlet 40, delivery outlet 41, evaporimeter 5,
Cylindrical shell 50, heat exchanger tube 51, pipeline 6, first paragraph 60, second segment 61,
Linkage section 62, restricting element 7
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.In addition,, in description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
Below with reference to Fig. 1-Fig. 3, describe according to a kind of handpiece Water Chilling Units 100 of the utility model embodiment, handpiece Water Chilling Units 100 can be divided into full-liquid type handpiece Water Chilling Units and dry type handpiece Water Chilling Units, wherein, the operation principle of full-liquid type handpiece Water Chilling Units and dry type handpiece Water Chilling Units etc. has been known by those skilled in the art, is not just described in detail here.
According to the handpiece Water Chilling Units 100 of the utility model embodiment, as Figure 1-Figure 2, comprise: compressor 1, condenser 2, high side float valve 3, low pressure liquid trap 4, evaporimeter 5 and restricting element 7, wherein, compressor 1 has exhaust outlet 10 and gas returning port 11, the entrance of condenser 2 is connected with the exhaust outlet 10 of compressor 1, and high side float valve 3 is connected to adjust the liquid level of condenser 2 with the outlet of condenser 2.Low pressure liquid trap 4 is provided with inlet 40 and delivery outlet 41, and delivery outlet 41 is connected with the gas returning port 11 of compressor 1.The outlet of evaporimeter 5 is connected with the inlet 40 of low pressure liquid trap 4, between the entrance of evaporimeter 5 and high side float valve 3, by pipeline 6, be connected, a part for pipeline 6 is positioned at low pressure liquid trap 4, that is to say, one end of pipeline 6 is connected with high side float valve 3, the other end of pipeline 6 first extend in low pressure liquid trap 4, and then stretches out to be connected with the entrance of evaporimeter 5 in low pressure liquid trap 4.Restricting element 7 is located on pipeline 6 and the entrance setting of contiguous evaporimeter 5, that is to say, restricting element 7 is located at outside low pressure liquid trap 4.Alternatively, restricting element 7 is expansion valve, and the utility model is not limited to this certainly, and restricting element 7 can be capillary.
Particularly, when handpiece Water Chilling Units 100 is full-liquid type handpiece Water Chilling Units, evaporimeter 5 is the flooded evaporator in shell and tube evaporator, and when handpiece Water Chilling Units 100 is dry type handpiece Water Chilling Units, evaporimeter 5 is the dry evaporator in shell and tube evaporator.Wherein, the operation principle of high side float valve 3 etc. has been known by those skilled in the art, is not just described in detail here.
When handpiece Water Chilling Units 100 has just been started working, the high pressure, high temperature refrigerant of discharging from the exhaust outlet 10 of compressor 1 enters in condenser 2 from the entrance of condenser 2, high pressure, high temperature refrigerant is carried out heat exchange with outside air and is lowered the temperature with condensation in condenser 2, condensed cold-producing medium enters in pipeline 6 after by high side float valve 3, cold-producing medium in pipeline 6 entrance from evaporimeter 5 after restricting element 7 throttlings enters in evaporimeter 5, cold-producing medium in evaporimeter 5 is discharged and is drained in low pressure liquid trap 4 from the outlet of evaporimeter 5 after heat exchange, carry out not evaporate in flash-pot 5 low pressure refrigerant liquid completely because Action of Gravity Field sinks to the bottom of low pressure liquid trap 4, come refrigerant vapour in flash-pot 5 to carry out by delivery outlet 41 and gas returning port 11, getting back to compressor 1 inside successively after heat exchange with the high-pressure refrigerant in pipeline 6 and carry out compression cycle.
Handpiece Water Chilling Units is after 100 work a period of times, the bottom of low pressure liquid trap 4 is contained with the low pressure refrigerant of certain depth, now the part due to pipeline 6 is positioned at low pressure liquid trap 4, when be drained into high-pressure refrigerant in pipeline 6 from high side float valve 3, flow through while being positioned at low pressure liquid trap 4 a part of, high-pressure refrigerant in this part of pipeline 6 and the low pressure refrigerant in low pressure liquid trap 4 carry out heat exchange, so that high-pressure refrigerant is further excessively cold, high-pressure refrigerant after heat exchange enters in evaporimeter 5 after by restricting element 7 throttlings, cold-producing medium in evaporimeter 5 is discharged and is drained in low pressure liquid trap 4 from the outlet of evaporimeter 5 after heat exchange, carry out not evaporate in flash-pot 5 low pressure refrigerant liquid completely because Action of Gravity Field sinks to the bottom of low pressure liquid trap 4, come refrigerant vapour in flash-pot 5 to carry out by delivery outlet 41 and gas returning port 11, getting back to compressor 1 inside successively after heat exchange with the high-pressure refrigerant in pipeline 6 and carry out compression cycle.So circulation.
According to the handpiece Water Chilling Units 100 of the utility model embodiment, by the outlet at condenser 2, be provided with high side float valve 3, thereby make condenser 2 outlets there is certain degree of supercooling, guarantee that condenser 2 has the liquid level of certain altitude and compares and can reduce costs with traditional control liquid level method, again owing to being provided with low pressure liquid trap 4, not only can make the refrigerant vapour of flash-pot 5 to return compressor 1 inside after heating, avoid compressor 1 absorbing gas belt liquid and can increase the heat exchange area of evaporimeter 5, simultaneously can make not evaporation in flash-pot 5 completely refrigerant liquid in low pressure liquid trap 4 inside because Action of Gravity Field is placed in bottom, this liquid carries out heat exchange with the high-pressure refrigerant from high side float valve 3, improve the degree of supercooling effect of high pressure refrigerant liquid, thereby can further avoid compressor 1 absorbing gas belt liquid and can increase refrigerating capacity and the Energy Efficiency Ratio of handpiece Water Chilling Units 100, improve the life-span of compressor 1.
According to embodiment more of the present utility model, as shown in figures 1 and 3, evaporimeter 5 is shell and tube evaporator, shell and tube evaporator 5 comprises cylindrical shell 50 and a plurality of heat exchanger tube 51, a plurality of heat exchanger tubes 51 taking up room in cylindrical shell 50 at least accounts for 1/2nd of space in cylindrical shell 50, preferably, 2/3rds of the space in the cylindrical shell 50 that takes up room of a plurality of heat exchanger tubes 51 in cylindrical shell 50.Thereby can utilize as much as possible the space in cylindrical shell 50, reduce the waste in the space in cylindrical shell 50, improve the heat exchange area utilization rate of evaporimeter 5, reduce the cost of evaporimeter 5.Particularly, can, by reducing the size of cylindrical shell 50, to improve a plurality of heat exchanger tubes 51 taking up room in cylindrical shell 50, thereby can further reduce costs.
In embodiment more of the present utility model, as depicted in figs. 1 and 2, a part that is positioned at low pressure liquid trap 4 for pipeline 6 has first paragraph 60 and the second segment 61 that along continuous straight runs extends, first paragraph 60 is positioned at the top of low pressure liquid trap 4, second segment 61 is positioned at the bottom of low pressure liquid trap 4, now, come the refrigerant vapour of flash-pot 5 and the high-pressure refrigerant in first paragraph 60 to carry out heat exchange, so that come the refrigerant vapour of flash-pot 5 overheated, come the high-pressure refrigerant not evaporating in low pressure refrigerant liquid and second segment 61 completely of flash-pot 5 to carry out heat exchange, can make the high-pressure refrigerant in pipeline 6 cross cold effective.Thereby can guarantee to avoid compressor 1 absorbing gas belt liquid, and can guarantee to increase refrigerating capacity and the Energy Efficiency Ratio of handpiece Water Chilling Units 100.
Particularly, as depicted in figs. 1 and 2, the linkage section 62 between first paragraph 60 and second segment 61 is linear, thereby can reduce the length of pipeline 6, further reduces costs.
According to other formations of the handpiece Water Chilling Units of the utility model embodiment, waiting and operate is all known for those of ordinary skills, is not described in detail here.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims (6)

1. a handpiece Water Chilling Units, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
Condenser, the entrance of described condenser is connected with the exhaust outlet of described compressor;
High side float valve, described high side float valve and the outlet of described condenser are connected to adjust the liquid level of described condenser;
Low pressure liquid trap, described low pressure liquid trap is provided with inlet and delivery outlet, and described delivery outlet is connected with the gas returning port of described compressor;
Evaporimeter, the outlet of described evaporimeter is connected with the inlet of described low pressure liquid trap, between the entrance of described evaporimeter and described high side float valve, by pipeline, is connected, and a part for described pipeline is positioned at described low pressure liquid trap;
Restricting element, described restricting element is located on described pipeline and the entrance setting of contiguous described evaporimeter.
2. handpiece Water Chilling Units according to claim 1, it is characterized in that, described evaporimeter is shell and tube evaporator, and described shell and tube evaporator comprises cylindrical shell and a plurality of heat exchanger tube, and described a plurality of heat exchanger tubes taking up room in described cylindrical shell at least accounts for 1/2nd of space in described cylindrical shell.
3. handpiece Water Chilling Units according to claim 2, is characterized in that, 2/3rds of the space in the described cylindrical shell that takes up room of described a plurality of heat exchanger tubes in described cylindrical shell.
4. handpiece Water Chilling Units according to claim 1, it is characterized in that, a described part for described pipeline has first paragraph and the second segment that along continuous straight runs extends, and described first paragraph is positioned at the top of described low pressure liquid trap, and described second segment is positioned at the bottom of described low pressure liquid trap.
5. handpiece Water Chilling Units according to claim 4, is characterized in that, the linkage section between described first paragraph and described second segment is linear.
6. handpiece Water Chilling Units according to claim 1, is characterized in that, described restricting element is expansion valve.
CN201320355802.5U 2013-06-20 2013-06-20 Cold water set Active CN203454440U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320355802.5U CN203454440U (en) 2013-06-20 2013-06-20 Cold water set

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Application Number Priority Date Filing Date Title
CN201320355802.5U CN203454440U (en) 2013-06-20 2013-06-20 Cold water set

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104236147A (en) * 2013-06-20 2014-12-24 重庆美的通用制冷设备有限公司 Water cooling unit
CN105241116A (en) * 2014-07-07 2016-01-13 重庆美的通用制冷设备有限公司 Water chilling unit
CN106322593A (en) * 2015-07-03 2017-01-11 广州市华德工业有限公司 Evaporative cooling type water chilling unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104236147A (en) * 2013-06-20 2014-12-24 重庆美的通用制冷设备有限公司 Water cooling unit
CN104236147B (en) * 2013-06-20 2017-02-15 重庆美的通用制冷设备有限公司 Water cooling unit
CN105241116A (en) * 2014-07-07 2016-01-13 重庆美的通用制冷设备有限公司 Water chilling unit
CN105241116B (en) * 2014-07-07 2017-11-10 重庆美的通用制冷设备有限公司 Handpiece Water Chilling Units
CN106322593A (en) * 2015-07-03 2017-01-11 广州市华德工业有限公司 Evaporative cooling type water chilling unit

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