CN216048479U - Sectional type large-temperature-difference water source heat pump unit - Google Patents
Sectional type large-temperature-difference water source heat pump unit Download PDFInfo
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- CN216048479U CN216048479U CN202122188359.4U CN202122188359U CN216048479U CN 216048479 U CN216048479 U CN 216048479U CN 202122188359 U CN202122188359 U CN 202122188359U CN 216048479 U CN216048479 U CN 216048479U
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Abstract
The utility model relates to a sectional type large-temperature-difference water source heat pump unit, which comprises a refrigerant cycle, a cooling water cycle and a chilled water cycle, wherein the refrigerant cycle comprises a low-temperature refrigerant cycle mechanism, a medium-temperature refrigerant cycle mechanism and a high-temperature refrigerant cycle mechanism, the cooling water cycle comprises a low-temperature chilled water cycle mechanism, a medium-temperature chilled water cycle mechanism and a high-temperature chilled water cycle mechanism, and the chilled water cycle comprises a low-temperature chilled water cycle mechanism, a medium-temperature chilled water cycle mechanism and a high-temperature chilled water cycle mechanism.
Description
Technical Field
The utility model relates to the field of renewable energy sources, in particular to a sectional type large-temperature-difference water source heat pump unit.
Background
The heat pump unit is a circulating system formed by a compressor, a condenser, a restrictor, an evaporator, a compressor and the like. Refrigerant circulates through the system under the action of the compressor. It completes the pressure increasing and temperature raising process of gas state in the compressor (the temperature is up to above 100 ℃), it exchanges heat with water after entering the condenser, the refrigerant is cooled and converted into high pressure liquid state about 1.5Mpa, when it runs to the restrictor, the pressure is suddenly reduced to about 0.4Mpa, when it runs to the evaporator, the liquid state absorbs heat quickly and evaporates to turn into gas state again, at the same time the temperature is reduced to about 2 ℃, at this time the heat source water in the evaporator will transmit low temperature heat to the refrigerant continuously. The continuous circulation of the refrigerant realizes the process that the low-temperature heat in the heat source water is converted into the high-temperature heat and the heat medium water is heated.
The existing heat pump unit has the defects that refrigerants with different properties can not be selected according to different working temperature ranges, a set of heat pump refrigerant circulating system is adopted, the existing heat pump unit is inconvenient to carry out treatment and adjustment in a segmented mode according to high-temperature working conditions, medium-temperature working conditions and low-temperature working conditions, and the whole large temperature difference and small flow of water source water are not easy to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provides a sectional type large-temperature-difference water source heat pump unit.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
a sectional type large temperature difference water source heat pump unit comprises a refrigerant circulation, a cooling water circulation and a chilled water circulation;
the refrigerant cycle comprises a low-temperature refrigerant cycle mechanism, a medium-temperature refrigerant cycle mechanism and a high-temperature refrigerant cycle mechanism;
the cooling water circulation comprises a low-temperature cooling water circulation mechanism, a medium-temperature cooling water circulation mechanism and a high-temperature cooling water circulation mechanism;
the chilled water circulation comprises a low-temperature chilled water circulation mechanism, a medium-temperature chilled water circulation mechanism and a high-temperature chilled water circulation mechanism.
Preferably, the low-temperature refrigerant circulating mechanism comprises a low-temperature compressor, a low-temperature condenser, a low-temperature expansion valve and a low-temperature evaporator, the medium-temperature refrigerant circulating mechanism comprises a medium-temperature compressor, a medium-temperature condenser, a medium-temperature expansion valve and a medium-temperature evaporator, and the high-temperature refrigerant circulating mechanism comprises a high-temperature compressor, a high-temperature condenser, a high-temperature expansion valve and a high-temperature evaporator.
Preferably, the low-temperature refrigerant circulation mechanism, the medium-temperature refrigerant circulation mechanism and the high-temperature refrigerant circulation mechanism are all in a circulation sequence of compressor discharge side → condenser → expansion valve → evaporator → compressor suction side, the refrigerants of the low-temperature refrigerant circulation mechanism, the medium-temperature refrigerant circulation mechanism and the high-temperature refrigerant circulation mechanism are not communicated, and the loops of the three circulation are mutually independent.
Preferably, the low-temperature cooling water circulation, the medium-temperature cooling water circulation and the high-temperature cooling water circulation are connected in a series connection structure.
Preferably, the low temperature cooling water circulating mechanism, the medium temperature cooling water circulating mechanism and the high temperature cooling water circulating mechanism circulate in sequence of cooling water inlet → low temperature condenser → medium temperature condenser → high temperature condenser → cooling water outlet → user terminal heat dissipation → cooling water inlet.
Preferably, a condenser isolator is adopted at the serial connection position among the high-temperature condenser, the medium-temperature condenser and the low-temperature condenser in the cooling water circulation to isolate refrigerants of the low-temperature refrigerant circulation, the medium-temperature refrigerant circulation and the high-temperature refrigerant circulation, so that the refrigerant circulation operates independently, meanwhile, the condenser isolator does not isolate cooling water, and the cooling water is in serial connection.
Preferably, the low-temperature chilled water circulating mechanism, the medium-temperature chilled water circulating mechanism and the high-temperature chilled water circulating mechanism are connected in series.
Preferably, the low-temperature chilled water circulating mechanism, the medium-temperature chilled water circulating mechanism and the high-temperature chilled water circulating mechanism circulate in sequence of chilled water inlet → high-temperature evaporator → medium-temperature evaporator → low-temperature evaporator → chilled water outlet → heat source absorption → chilled water inlet.
Preferably, the evaporator isolator is used at the serial connection position among the high-temperature evaporator, the medium-temperature evaporator and the low-temperature evaporator in the chilled water circulation to isolate refrigerants of the low-temperature refrigerant circulation mechanism, the medium-temperature refrigerant circulation mechanism and the high-temperature refrigerant circulation mechanism, so that each group of refrigerant circulation operates independently, and meanwhile, the evaporator isolator does not isolate chilled water which is in serial connection.
Has the advantages that:
1. the heat pump water source water circulation system has the advantages that two or more independent heat pump refrigerant circulation systems are adopted, chilled water circulation and cooling water circulation are respectively connected in series, large temperature difference can be ingeniously decomposed into a high-temperature working condition, a medium-temperature working condition and a low-temperature working condition through the structure, and the segmented treatment is carried out, so that the overall large temperature difference and small flow of water source water are realized.
2. The heat source water consumption in the use process of the water source heat pump is greatly saved, the heat source water flow can be reduced by more than 50% compared with the heat source water flow required by the current national standard, if a buried pipe type underground water heat exchanger is adopted, and after the heat source circulating water is subjected to anti-freezing treatment, a larger temperature difference can be achieved, and the heat exchange efficiency is correspondingly improved.
3. The water is used as heat transfer medium, the specific heat of the water is large, the thermal inertia is large, the temperature fluctuation is small, and no pollution is caused.
4. The sectional design of the water source heat pump unit can select refrigerants with different properties according to different working temperature ranges.
Of course, it is not necessary for any one product that embodies the utility model to achieve all of the above advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structural connection of the present invention;
FIG. 2 is a schematic flow diagram of the present invention;
the reference numbers in the drawings are as follows:
1. a chilled water outlet; 2. a cryogenic compressor; 3. a low temperature condenser; 4. a cooling water inlet; 5. a low temperature expansion valve; 6 a condenser isolator; 7. a high temperature condenser; 8. a high temperature compressor; 9. a cooling water outlet; 10 high-temperature expansion valve; 11 a chilled water inlet; 12 a high temperature evaporator; 13. an evaporator isolator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in FIGS. 1-2, the present invention is a sectional type large temperature difference water source heat pump unit, comprising a refrigerant cycle, a cooling water cycle and a chilled water cycle;
the refrigerant cycle comprises a low-temperature refrigerant cycle mechanism, a medium-temperature refrigerant cycle mechanism and a high-temperature refrigerant cycle mechanism;
the cooling water circulation comprises a low-temperature cooling water circulation mechanism, a medium-temperature cooling water circulation mechanism and a high-temperature cooling water circulation mechanism;
the chilled water circulation comprises a low-temperature chilled water circulation mechanism, a medium-temperature chilled water circulation mechanism and a high-temperature chilled water circulation mechanism.
The low-temperature refrigerant circulating mechanism comprises a low-temperature compressor 2, a low-temperature condenser 3, a low-temperature expansion valve 5 and a low-temperature evaporator, the medium-temperature refrigerant circulating mechanism comprises a medium-temperature compressor, a medium-temperature condenser, a medium-temperature expansion valve and a medium-temperature evaporator, the high-temperature refrigerant circulating mechanism comprises a high-temperature compressor 8, a high-temperature condenser 7, a high-temperature expansion valve 10 and a high-temperature evaporator 12, all the low-temperature refrigerant circulating mechanism, the medium-temperature refrigerant circulating mechanism and the high-temperature refrigerant circulating mechanism are in a circulating sequence of a compressor exhaust side → condenser → expansion valve → evaporator → compressor suction side, and refrigerants of the low-temperature refrigerant circulating mechanism, the medium-temperature refrigerant circulating mechanism and the high-temperature refrigerant circulating mechanism are not communicated, and three circulating loops are mutually independent.
Example 2:
wherein, the low temperature cooling water circulation, the medium temperature cooling water circulation and the high temperature cooling water circulation are connected in series, the low temperature cooling water circulation mechanism, the medium temperature cooling water circulation mechanism and the high temperature cooling water circulation mechanism have the circulation sequence of a cooling water inlet 4 → a low temperature condenser 3 → a medium temperature condenser → a high temperature condenser 7 → a cooling water outlet 9 → a user terminal heat dissipation → a cooling water inlet 4, a condenser isolator 6 is adopted at the series connection position among the high temperature condenser 7, the medium temperature condenser and the low temperature condenser 3 in the cooling water circulation to isolate the refrigerants of the low temperature refrigerant circulation, the medium temperature refrigerant circulation and the high temperature refrigerant circulation, so that the refrigerant circulation operates independently, meanwhile, the condenser isolator 6 does not isolate cooling water, the cooling water is connected in series, heat sent by the compressor at the exhaust side is continuously taken away, and then the heat is conveyed to the tail end of a user for heat dissipation.
Example 3:
wherein, the low temperature chilled water circulation mechanism, the medium temperature chilled water circulation mechanism and the high temperature chilled water circulation mechanism are connected in series, the low temperature chilled water circulation mechanism, the medium temperature chilled water circulation mechanism and the high temperature chilled water circulation mechanism have the circulation sequence of chilled water inlet 11 → high temperature evaporator 12 → medium temperature evaporator → low temperature evaporator → chilled water outlet 1 → heat source absorption → chilled water inlet 11, the evaporator isolator 13 is adopted at the series connection position among the high temperature evaporator 12, the medium temperature evaporator and the low temperature evaporator in the chilled water circulation to isolate the refrigerants of the low temperature refrigerant circulation mechanism, the medium temperature refrigerant circulation mechanism and the high temperature refrigerant circulation mechanism, so that each group of refrigerant circulation operates independently, meanwhile, the evaporator isolator 13 does not isolate the chilled water, the chilled water is connected in series, and continuously transmits heat to the refrigerant evaporated after decompression by the expansion valve, the temperature of the chilled water is reduced and then the chilled water is sent to a heat source for heat exchange and temperature rise (or recharging and the like).
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (3)
1. The utility model provides a big difference in temperature water source heat pump set of sectional type which characterized in that: comprises a refrigerant cycle, a cooling water cycle and a chilled water cycle;
the refrigerant cycle comprises a low-temperature refrigerant cycle mechanism, a medium-temperature refrigerant cycle mechanism and a high-temperature refrigerant cycle mechanism;
the low-temperature refrigerant circulating mechanism comprises a low-temperature compressor, a low-temperature condenser, a low-temperature expansion valve and a low-temperature evaporator, the medium-temperature refrigerant circulating mechanism comprises a medium-temperature compressor, a medium-temperature condenser, a medium-temperature expansion valve and a medium-temperature evaporator, and the high-temperature refrigerant circulating mechanism comprises a high-temperature compressor, a high-temperature condenser, a high-temperature expansion valve and a high-temperature evaporator;
the low-temperature refrigerant circulating mechanism, the medium-temperature refrigerant circulating mechanism and the high-temperature refrigerant circulating mechanism are all in a circulating sequence of an exhaust side compressor → a condenser → an expansion valve → an evaporator → an air suction side compressor, refrigerants of the low-temperature refrigerant circulating mechanism, the medium-temperature refrigerant circulating mechanism and the high-temperature refrigerant circulating mechanism are not communicated, and three circulating loops are mutually independent;
the cooling water circulation comprises a low-temperature cooling water circulation mechanism, a medium-temperature cooling water circulation mechanism and a high-temperature cooling water circulation mechanism;
the low-temperature cooling water circulation, the medium-temperature cooling water circulation and the high-temperature cooling water circulation are connected in a series structure;
the low-temperature cooling water circulating mechanism, the medium-temperature cooling water circulating mechanism and the high-temperature cooling water circulating mechanism are sequentially circulated through a cooling water inlet → a low-temperature condenser → a medium-temperature condenser → a high-temperature condenser → a cooling water outlet → heat dissipation at the end of a user → a cooling water inlet;
the chilled water circulation comprises a low-temperature chilled water circulation mechanism, a medium-temperature chilled water circulation mechanism and a high-temperature chilled water circulation mechanism;
the low-temperature chilled water circulating mechanism, the medium-temperature chilled water circulating mechanism and the high-temperature chilled water circulating mechanism are connected in a series structure;
the low-temperature chilled water circulating mechanism, the medium-temperature chilled water circulating mechanism and the high-temperature chilled water circulating mechanism are in a circulating sequence of chilled water inlet → high-temperature evaporator → medium-temperature evaporator → low-temperature evaporator → chilled water outlet → heat absorption of heat source → chilled water inlet.
2. The sectional type large temperature difference water source heat pump unit according to claim 1, characterized in that: a condenser isolator is adopted at the serial connection position among the high-temperature condenser, the medium-temperature condenser and the low-temperature condenser in the cooling water circulation to isolate refrigerants of the low-temperature refrigerant circulation, the medium-temperature refrigerant circulation and the high-temperature refrigerant circulation, so that the refrigerant circulation runs independently, meanwhile, the condenser isolator does not isolate cooling water, and the cooling water is in serial connection.
3. The sectional type large temperature difference water source heat pump unit according to claim 1, characterized in that: the evaporator isolator is adopted at the serial connection position among the high-temperature evaporator, the medium-temperature evaporator and the low-temperature evaporator in the chilled water circulation, the refrigerants of the low-temperature refrigerant circulation mechanism, the medium-temperature refrigerant circulation mechanism and the high-temperature refrigerant circulation mechanism are isolated, so that each group of refrigerant circulation independently operates, meanwhile, the chilled water is not isolated by the evaporator isolator, and the chilled water is in serial connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122188359.4U CN216048479U (en) | 2021-09-10 | 2021-09-10 | Sectional type large-temperature-difference water source heat pump unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122188359.4U CN216048479U (en) | 2021-09-10 | 2021-09-10 | Sectional type large-temperature-difference water source heat pump unit |
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| CN216048479U true CN216048479U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122188359.4U Active CN216048479U (en) | 2021-09-10 | 2021-09-10 | Sectional type large-temperature-difference water source heat pump unit |
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2021
- 2021-09-10 CN CN202122188359.4U patent/CN216048479U/en active Active
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