CN213931450U - Cascade heat pump unit - Google Patents
Cascade heat pump unit Download PDFInfo
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- CN213931450U CN213931450U CN202022205953.5U CN202022205953U CN213931450U CN 213931450 U CN213931450 U CN 213931450U CN 202022205953 U CN202022205953 U CN 202022205953U CN 213931450 U CN213931450 U CN 213931450U
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Abstract
The other end of the fourth valve is connected with the fifth valve and a second interface of the water source heat pump host, and the other end of the fifth valve and the other end of the sixth valve are connected with a water inlet of the unit; the second interface of the air source heat pump host is simultaneously connected with the first valve and the second valve, the other end of the first valve is simultaneously connected with the eighth valve and the third interface of the water source heat pump host, the other end of the second valve is simultaneously connected with the seventh valve and the fourth interface of the water source heat pump host, and the other end of the eighth valve and the other end of the seventh valve are simultaneously connected with the water outlet of the unit. The air conditioning system improves the efficiency of the air conditioning system, enlarges the application range of the air source heat pump and reduces the energy consumption of the system.
Description
Technical Field
The utility model relates to a heat pump technical field especially relates to a cascade heat pump set.
Background
The air source heat pump system is an air conditioning system which can supply heat and refrigerate by utilizing air energy, but the air source heat pump water source heat pump system is an air conditioning system which utilizes surface water/underground water to prepare cold/heat. The tail end water temperature restricts the efficiency of the heat pump unit, and documents suggest that the energy can be saved by 5-12% when the freezing water temperature of the air conditioner is increased by 1 ℃, so that the efficiency of the whole system can be improved by properly increasing the freezing water temperature of the air source heat pump.
Because the quality of cold/hot water prepared by the air source heat pump is lower, the unit efficiency is greatly reduced when the use temperature of a fan coil or a radiator is reached, and the manufacturing cost of the low-temperature air source heat pump in the market is generally higher; the water source heat pump unit has high efficiency, but along with the increasing attention of the country to water resources in recent years, the available water resources are reduced suddenly, the market of the water source heat pump unit is more and more cool, and the manufacturing cost is cheaper and cheaper;
the efficiency of the heat pump unit is limited by two factors, namely the temperature of a medium at the hot side and the temperature of a medium at the tail end, the smaller the temperature difference between the two is, the higher the unit efficiency is, so that an air source heat pump and a water source heat pump can be combined to form a cascade unit, the air source heat pump is used for preparing medium-temperature water, and the water is prepared to the temperature required by the tail end through the water source heat pump, so that the two units can operate at high efficiency, the energy consumption of the system is greatly reduced, and the purposes of energy conservation and emission reduction are achieved.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a cascade heat pump unit that overcomes or at least partially solves the above problems.
According to an aspect of the present invention, there is provided a cascade heat pump unit, comprising at least one air source heat pump host, at least one water source heat pump host, a unit pump, a unit water inlet, and a unit water outlet, wherein the first interfaces of all the air source heat pump hosts of at least one air source heat pump host are connected to the unit pump, the other end of the unit pump is connected to the third valve and the fourth valve simultaneously, the other end of the third valve is connected to the sixth valve and the first interfaces of all the water source heat pump hosts in at least one water source heat pump host simultaneously, the other end of the fourth valve is connected to the fifth valve and the second interfaces of all the water source heat pump hosts in at least one water source heat pump host simultaneously, and the other end of the fifth valve and the other end of the sixth valve are connected to the unit water inlet simultaneously; the second interfaces of all the air source heat pump hosts of the at least one air source heat pump host are simultaneously connected with the first valve and the second valve, the other end of the first valve is simultaneously connected with the eighth valve and the third interfaces of all the water source heat pump hosts in the at least one water source heat pump host, the other end of the second valve is simultaneously connected with the seventh valve and the fourth interfaces of all the water source heat pump hosts in the at least one water source heat pump host, and the other end of the eighth valve and the other end of the seventh valve are simultaneously connected with the unit water outlet.
In one possible embodiment, the unit water outlet is connected to the fan coil by a circulation pump.
In one possible embodiment, the unit water outlet is connected to the radiator via a circulation pump.
In one possible embodiment, the number of air source heat pump hosts is 1.
In one possible embodiment, the number of the water source heat pump host machines is 1.
The utility model discloses an air source heat pump host computer prepares low-grade goods cold/hot water, prepares high-grade goods cold/hot water through water source heat pump set to improve air conditioning system's efficiency greatly, increased air source heat pump application scope, reduced the system energy consumption, carried out substantive response to national energy saving and emission reduction's policy.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
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 described below, and it is obvious that the drawings in the description below 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 these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cascade heat pump unit according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of the internal circulation line;
FIG. 3 is a schematic diagram of the conduction of the external circulation line;
FIG. 4 is a schematic diagram of the conduction of the operation state of the winter season unit;
FIG. 5 is a schematic diagram of the conduction of the summer unit in the operating state;
FIG. 6 is a schematic structural view of another cascade heat pump unit according to an embodiment of the present invention;
description of reference numerals:
the system comprises an air heat pump host, a water source heat pump host, a unit pump 3, a first valve 41, a second valve 42, a third valve 51, a fourth valve 52, a fifth valve 61, a sixth valve 62, a seventh valve 71, an eighth valve 72, a unit water inlet 8 and a unit water outlet 9.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terms "comprises" and "comprising," and any variations thereof, in the described embodiments of the invention, and in the claims and drawings, are intended to cover a non-exclusive inclusion, such as a list of steps or elements.
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
The embodiment of the utility model provides a cascade heat pump set, including at least one air source heat pump host computer 1, at least one water source heat pump host computer 2, a unit pump 3, a unit water inlet 8, a unit delivery port 9.
The first interfaces of all the air source heat pump hosts 1 of at least one air source heat pump host 1 are connected with the unit pump 3, the other end of the unit pump 3 is simultaneously connected with a third valve 51 and a fourth valve 52, the other end of the third valve 51 is simultaneously connected with a sixth valve 62 and the first interfaces of all the water source heat pump hosts 2 in at least one water source heat pump host 2, the other end of the fourth valve 52 is connected with a fifth valve 61 and the second interfaces of all the water source heat pump hosts 2 in at least one water source heat pump host 2, and the other end of the fifth valve 61 and the other end of the sixth valve 62 are simultaneously connected with the unit water inlet 8.
The second interfaces of all the air source heat pump hosts 1 of at least one air source heat pump host 1 are simultaneously connected with the first valve 41 and the second valve 42, the other end of the first valve 41 is simultaneously connected with the eighth valve 72 and the third interfaces of all the water source heat pump hosts 2 in at least one water source heat pump host 2, the other end of the second valve 42 is simultaneously connected with the seventh valve 71 and the fourth interfaces of all the water source heat pump hosts 2 in at least one water source heat pump host 2, and the other end of the eighth valve 72 and the other end of the seventh valve 71 are simultaneously connected with the unit water outlet 9.
The internal circulation pipeline is formed by sequentially connecting pipelines of all air source heat pump hosts 1 in at least one air source heat pump host 1, all water source heat pump hosts 2 of at least one water source heat pump host 2, the unit pump 3, the first valve 41, the second valve 42, the third valve 51 and the fourth valve 52.
The water inlet 8 of the unit, the fifth valve 61, the sixth valve 62, and all the water source heat pump units 2 in the at least one water source heat pump unit 2, the seventh valve 71, the eighth valve 72, and the unit water outlet 9 are sequentially connected to form an external circulation pipeline, the external circulation pipeline needs to be connected with the tail end through a circulation pump, and the tail end can be a fan coil or a radiator.
The scheme of the present invention is further described below by taking an air source heat pump host 1 and a water source heat pump host 2 as examples.
As shown in fig. 1, the embodiment of the utility model provides a cascade heat pump unit, including air source heat pump host computer 1, water source heat pump host computer 2, unit pump 3, unit water inlet 8, unit delivery port 9.
The first interface of the air source heat pump host 1 is connected with the unit heat pump 3, the other end of the unit heat pump 3 is simultaneously connected with the third valve 51 and the fourth valve 52, the other end of the third valve 51 is simultaneously connected with the first interface and the sixth valve 62 of the water source heat pump host 2, the other end of the fourth valve 52 is connected with the second interface and the fifth valve 61 of the water source heat pump host 2, and the other end of the fifth valve 61 and the other end of the sixth valve 62 are simultaneously connected with the unit water inlet 8.
The second interface of the air source heat pump host 1 is simultaneously connected with the first valve 41 and the second valve 42, the other end of the first valve 41 is simultaneously connected with the third interface and the eighth valve 72 of the water source heat pump host 2, the other end of the second valve 42 is simultaneously connected with the fourth interface and the seventh valve 71 of the water source heat pump host 2, and the other end of the eighth valve 72 and the other end of the seventh valve 71 are simultaneously connected with the unit water outlet 9.
The internal circulation pipeline is formed by sequentially connecting the air source heat pump host 1, the water source heat pump host 2, the unit pump 3, the first valve 41, the second valve 42, the third valve 51 and the fourth valve 52. In order to more intuitively illustrate the internal circulation pipeline, the line related to the internal circulation pipeline is thickened on the basis of fig. 1 in fig. 2.
The water inlet 8, the fifth valve 61, the sixth valve 62, the water source heat pump unit 2, the seventh valve 71, the eighth valve 72 and the water outlet 9 of the unit are sequentially connected to form an external circulation pipeline, the external circulation pipeline needs to be connected with the tail end through a circulating pump, the tail end can be a fan coil or a radiator, and in order to more visually indicate the external circulation pipeline, the lines related to the external circulation pipeline are shown in a bold mode on the basis of fig. 1 in fig. 3.
The working process is as follows:
fig. 4 shows the operating state of the winter season unit as follows, wherein, in order to more intuitively illustrate the external circulation line, fig. 4 illustrates the line related to the external circulation line with a bold solid line and the line related to the internal circulation line with a bold dashed line on the basis of fig. 1:
as shown by the thick solid line in fig. 4, the external circulation pipeline includes a unit water inlet 8, a sixth valve 62, a water source heat pump unit 2, an eighth valve 72 and a unit water outlet 9, which are connected in sequence.
As shown by the bold dashed line in fig. 4, the internal circulation pipeline includes an air source heat pump main unit 1, a unit pump 3, a fourth valve 52, a water source heat pump main unit 2 and a second valve 42 which are connected in sequence in the end.
Fig. 5 shows the operating state of the summer unit as follows, wherein, in order to more intuitively illustrate the external circulation pipeline, fig. 5 illustrates the lines related to the external circulation pipeline in bold solid lines and the lines related to the internal circulation pipeline in bold dashed lines on the basis of fig. 1.
As shown by the thick solid line in fig. 5, the external circulation pipeline includes a unit water inlet 8, a fifth valve 61, a water source heat pump unit 2, a seventh valve 71 and a unit water outlet 9, which are connected in sequence.
As shown by the bold dashed line in fig. 5, the internal circulation pipeline includes an air source heat pump host 1, a unit pump 3, a third valve 51, a water source heat pump host 2 and a first valve 41 which are connected in sequence in the end.
In one example, the air source heat pump 1 may be a group or a plurality of groups connected in parallel.
In one example, the water source heat pump units 2 may be one group or multiple groups connected in parallel.
In one example, the unit pump 3 is used for in-unit circulation and cannot be used as an external circulation pump, and the unit pump may be one group or multiple groups connected in parallel.
Fig. 6 is a schematic diagram of the connection between multiple sets of air heat pump hosts 1 and multiple sets of water source heat pump hosts 2, and the operation process is similar to that of fig. 1 and is not described again here.
The utility model discloses an air source heat pump host computer 1 prepares low-grade goods cold/hot water, prepares high-grade goods cold/hot water through water source heat pump set 2 to improve air conditioning system's efficiency greatly, increased air source heat pump application scope, reduced the system energy consumption, carried out substantive response to national energy saving and emission reduction's policy.
After the technical scheme is adopted, compared with the ordinary air source heat pump unit, the utility model, have following apparent advantage:
1. the unit efficiency is high, the winter efficiency reaches or exceeds 5, and the summer efficiency reaches or exceeds 6.5.
2. The unit can refrigerate and heat, and has multiple functions.
3. The unit has wide application range, and the operating environment temperature is-25 to 10 ℃ when the unit heats; the ambient temperature of the running environment is 25 to 50 ℃ when the unit is refrigerated.
The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A cascade heat pump unit is characterized by comprising at least one air source heat pump host (1), at least one water source heat pump host (2), a unit pump (3), a unit water inlet (8) and a unit water outlet (9);
the first interfaces of all air source heat pump hosts (1) of at least one air source heat pump host (1) are connected with a unit pump (3), the other end of the unit pump (3) is simultaneously connected with a third valve (51) and a fourth valve (52), the other end of the third valve (51) is simultaneously connected with a sixth valve (62) and the first interfaces of all water source heat pump hosts (2) in at least one water source heat pump host (2), the other end of the fourth valve (52) is connected with a fifth valve (61) and the second interfaces of all water source heat pump hosts (2) in at least one water source heat pump host (2), and the other end of the fifth valve (61) and the other end of the sixth valve (62) are simultaneously connected with a unit water inlet (8);
the second interfaces of all the air source heat pump hosts (1) of at least one air source heat pump host (1) are simultaneously connected with a first valve (41) and a second valve (42), the other end of the first valve (41) is simultaneously connected with an eighth valve (72) and the third interfaces of all the water source heat pump hosts (2) in at least one water source heat pump host (2), the other end of the second valve (42) is simultaneously connected with a seventh valve (71) and the fourth interfaces of all the water source heat pump hosts (2) in at least one water source heat pump host (2), and the other end of the eighth valve (72) and the other end of the seventh valve (71) are simultaneously connected with a unit water outlet (9).
2. The cascade heat pump unit according to claim 1, wherein the unit water outlet (9) is connected to a fan coil by a circulation pump.
3. The cascade heat pump unit according to claim 1, wherein the unit water outlet (9) is connected to a radiator via a circulation pump.
4. The cascade heat pump unit according to claim 1, characterized in that the number of the air source heat pump hosts (1) is 1.
5. The cascade heat pump unit according to claim 1, characterized in that the number of the water source heat pump hosts (2) is 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022205953.5U CN213931450U (en) | 2020-09-30 | 2020-09-30 | Cascade heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022205953.5U CN213931450U (en) | 2020-09-30 | 2020-09-30 | Cascade heat pump unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213931450U true CN213931450U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022205953.5U Active CN213931450U (en) | 2020-09-30 | 2020-09-30 | Cascade heat pump unit |
Country Status (1)
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|---|---|
| CN (1) | CN213931450U (en) |
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- 2020-09-30 CN CN202022205953.5U patent/CN213931450U/en active Active
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