CN214469041U - Interconnection system of air source heat pump heat recovery unit - Google Patents

Abstract

The utility model belongs to the technical field of the air conditioner, a interconnected system of air source heat pump heat recovery unit is disclosed, including controlling means, interconnected unit module, user side air conditioning module and user side hot water module, controlling means's first control module, second control module and third control module dispose respectively in heat recovery unit, ordinary air-cooled heat pump set and water source heat pump set are last, controlling means's unit line controller is connected with first control module, second control module and third control module are connected respectively in first control module, user side air conditioning module intercommunication interconnected unit module, user side hot water module intercommunication heat recovery unit. The utility model discloses a unit type is discerned in the cooperation of each module among the controlling means under different operational mode, according to the difference in temperature and the definite ability output value of difference in temperature change rate, carries out the ability distribution to the unit, reaches the optimal operation configuration when satisfying user's needs and heat recovery function, is showing improvement operating efficiency, reduce cost.

Description

Interconnection system of air source heat pump heat recovery unit

Technical Field

The utility model relates to an air conditioning technology field especially relates to an interconnected system of air source heat pump heat recovery unit.

Background

At present, in the application of a heat recovery unit, the heat recovery unit can only be used with a heat recovery unit composition module to control the air conditioning load of a user room and the domestic hot water load of the user. When the air conditioning load and the domestic hot water load of a user room are always in demand, the heat recovery unit can always operate a heat recovery mode, and can simultaneously recover condensation heat to generate domestic hot water for the user when the room is cooled, and the unit is always in the highest energy efficiency state. However, when the air conditioning load and the domestic hot water load of a user room are not consistent, such as the hot water load is small and the room load is large, the unit can only load the hot water side load demand, and then all the units are switched to refrigeration, so that part of unit modules cannot operate for heat recovery, and part of unit modules operate for refrigeration, so that the unit cannot be in the optimal operation state, the cost is high, and the efficiency is low. Therefore, it is necessary to improve a heat recovery unit system, distribute different unit operation modes inside the unit modules, meet the requirements of air conditioning refrigeration, heating and domestic hot water on the user side, and simultaneously significantly improve the operation efficiency and reduce the cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an interconnected system of air source heat pump heat recovery unit satisfies user side air conditioner refrigeration, heats and life hot water demand, is showing and is improving entire system operating efficiency, and the cost that falls consumes.

To achieve the purpose, the utility model adopts the following technical proposal:

an interconnected system of air source heat pump heat recovery units comprising:

the control device comprises a unit wire controller, a first control module, a second control module and a third control module;

the interconnected unit module comprises a heat recovery unit, a common air-cooled heat pump unit and a water source heat pump unit, the first control module is configured on the heat recovery unit, the unit line controller is connected with the first control module, the second control module is configured on the common air-cooled heat pump unit, the second control module is connected with the first control module through a communication line, the third control module is configured on the water source heat pump unit, and the third control module is connected with the first control module through a communication line;

the user side air conditioning module is communicated with the interconnected unit module;

and the user side hot water module is communicated with the heat recovery unit.

Preferably, the heat recovery unit is provided with two user hot water ports, one of the user hot water ports is communicated with the water outlet end of the user side hot water module through a first water pump, and the other user hot water port is communicated with the water inlet end of the user side hot water module.

Preferably, the user side air conditioning module is communicated with the interconnection unit module through a first pipeline and a second pipeline respectively, a second water pump is arranged on the first pipeline and can drive a medium in the user side air conditioning module to flow to the interconnection unit module, and the medium in the interconnection unit module is conveyed to the user side air conditioning module through the second pipeline.

Preferably, the heat recovery unit is provided with two user air conditioning ports, one of the user air conditioning ports is communicated with the medium output port of the user side air conditioning module through the first pipeline, and the other of the user air conditioning ports is communicated with the medium input port of the user side air conditioning module through the second pipeline.

Preferably, the common air-cooled heat pump unit is provided with a water inlet port and a water outlet port, the water inlet port is communicated with the medium output port of the user-side air conditioning module through the first pipeline, and the water outlet port is communicated with the medium input port of the user-side air conditioning module through the second pipeline.

Preferably, the water source heat pump unit is provided with two evaporator ports, one evaporator port is communicated with the medium output port of the user side air conditioning module through the first pipeline, and the other evaporator port is communicated with the medium input port of the user side air conditioning module through the second pipeline.

Preferably, the system further comprises a cooling water tower, wherein the cooling water tower is communicated with the water source heat pump unit.

Preferably, the water source heat pump unit is further provided with two condenser ports, one condenser port is communicated with the water outlet end of the cooling water tower through a third water pump, and the other condenser port is communicated with the water inlet end of the cooling water tower.

Preferably, a water discharge port is further arranged on the water source heat pump unit, and the water discharge port is configured to discharge wastewater in the water source heat pump unit.

Preferably, the communication line is a CAN communication line.

The utility model has the advantages that:

the utility model discloses an among the interconnected system of air source heat pump heat recovery unit, ordinary air-cooled heat pump set and the water source heat pump set in the interconnected unit module are controlled through controlling means to provide refrigeration and heat for user side air conditioning module, provide life hot water for user side hot water module. Under the matching action of the first control module, the second control module, the third control module and the unit wire controller, the unit type is identified through the first control module, capacity calculation is carried out according to the temperature difference between the environment temperature and the mode setting temperature and the temperature difference change rate relation, and the capacity output value is determined, so that all units in the interconnected unit modules are distributed, the optimal operation configuration is achieved, the operation efficiency is obviously improved, and the cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an interconnection system of an air source heat pump heat recovery unit provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a part of an interconnection system of an air source heat pump heat recovery unit provided by an embodiment of the present invention.

In the figure:

1-a control device; 11-a unit line controller;

2-interconnecting the unit modules;

21-a heat recovery unit; 211-user hot water port; 212-user air conditioning port;

22-common air-cooled heat pump unit; 221-water inlet port; 222-a water outlet port;

23-a water source heat pump unit; 231-evaporator port; 232-condenser port; 233-drain port;

3-a user side air conditioning module; 31-a second water pump;

4-user side hot water module; 41-a first water pump;

5-a cooling water tower; 51-third Water Pump.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and can include, for example, fixed or removable connections, mechanical or electrical connections, direct connections, indirect connections through an intermediary, communication between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may include both the first and second features being in direct contact, and may also include the first and second features being in contact, not in direct contact, but with another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model provides an interconnected system of air source heat pump heat recovery unit, including controlling means 1, interconnected unit module 2, user side air conditioning module 3 and user side hot water module 4. The control device 1 comprises a unit line controller 11, a first control module, a second control module and a third control module, the interconnected unit module 2 comprises a heat recovery unit 21, a common air-cooled heat pump unit 22 and a water source heat pump unit 23, the first control module is configured on the heat recovery unit 21, the unit line controller 11 is connected with the first control module, the second control module is configured on the common air-cooled heat pump unit 22, the second control module is connected with the first control module through a communication line, the third control module is configured on the water source heat pump unit 23, and the third control module is connected with the first control module through a communication line. The user side air conditioning module 3 is communicated with the interconnected unit module 2, and the user side hot water module 4 is communicated with the heat recovery unit 21.

The utility model discloses an among the interconnected system of air source heat pump heat recovery unit, control heat recovery unit 21, ordinary air-cooled heat pump set 22 and water source heat pump set 23 in the interconnected unit module 2 through controlling means 1 to for user side air conditioning module 3 provides refrigeration and heats, provide life hot water for user side hot water module 4. Under the matching action of the first control module, the second control module, the third control module and the unit line controller 11, the unit type is identified through the first control module, the temperature difference is determined according to the ambient temperature and the mode setting temperature, and the capacity output value is determined according to the relation between the temperature difference and the temperature difference change rate, so that the capacity distribution is carried out on each unit in the interconnected unit module 2, the optimal operation configuration is achieved, the operation efficiency is obviously improved, and the cost is reduced.

In this embodiment, the control device 1 controls the heat recovery unit 21, the ordinary air-cooled heat pump unit 22 and the water source heat pump unit 23 in the interconnected unit module 2, so as to provide five operation modes: the refrigeration mode, the mode of heating, the water heater mode, refrigeration and heat recovery mode and heating and hot water mode satisfy the different demands of user side.

Specifically, in the cooling mode, the heat recovery unit 21, the ordinary air-cooled heat pump unit 22, and the water source heat pump unit 23 all participate in the capacity calculation, and then the number of units to be operated is determined according to the load size, and the water source heat pump unit 23 is preferentially operated.

In the heating mode, the heat recovery unit 21, the common air-cooled heat pump unit 22 and the water source heat pump unit 23 all participate in the capacity calculation, and the number of the operating units is determined according to the load.

In the water heater mode, only the heat recovery unit 21 participates in the capacity calculation, the number of the units to be operated is determined according to the load, and the common air-cooled heat pump unit 22 and the water source heat pump unit 23 are in a shutdown state.

In the refrigeration and heat recovery mode, the capacity requirements of the user side air conditioning module 3 and the user side hot water module 4 are respectively calculated, the two functions of air conditioning refrigeration and hot water are operated according to load, the heat recovery unit 21 is preferentially started, the heat recovery and refrigeration functions are operated, and when the air conditioning refrigeration load capacity is insufficient, the common air-cooled heat pump unit 22 and the water source heat pump unit 23 are started again.

In the heating and hot water modes, the heat recovery unit 21, the ordinary air-cooled heat pump unit 22 and the water source heat pump unit 23 all participate in the capacity calculation, wherein the heat recovery unit 21 only participates in the capacity calculation of the hot water load, and the ordinary air-cooled heat pump unit 22 and the water source heat pump unit 23 perform the capacity distribution according to the air-conditioner heating and hot water load requirements.

Further, the calculation of the capacity in the present embodiment is based on the difference in temperature (Δ T) and the rate of change in temperature (Δ T)_C) To determine a capacity output (P), wherein the temperature difference (Δ T) is in degrees Celsius (C.) and the capacity output (P) is in Hertz (Hz). Specifically, a temperature difference interval and a temperature difference change rate interval are set, the temperature difference interval and the temperature difference change rate interval corresponding to the temperature difference and the temperature difference change rate are determined respectively, and the corresponding temperature difference level and the corresponding temperature difference change rate level are determined according to the temperature difference interval and the temperature difference change rate interval. The temperature difference can be divided into eight levels of positive large (PLL), Positive Large (PL), Positive Middle (PM), Positive Small (PS), Zero (ZO), Negative Small (NS), Negative Middle (NM) and Negative Large (NL) from high to low, the temperature difference resolution can be divided into seven levels of positive large (PLL), Positive Large (PL), Positive Middle (PM), Positive Small (PS), Zero (ZO), Negative Small (NS) and Negative Middle (NM) from high to low, and the specific corresponding relation between the temperature difference interval and the temperature difference level and the corresponding relation between the temperature difference change rate interval and the temperature difference change rate level are shown in table 1. The capability output (P) is determined according to the corresponding temperature difference level and temperature difference change rate level, and the corresponding relationship, in this embodiment, the capability output can be divided into seven levels of Positive Large (PL), Positive Middle (PM), Positive Small (PS), proper (ZO), Negative Small (NS), Negative Middle (NM), and Negative Large (NL), specifically, the corresponding relationship between the capability output level and the capability output level is shown in table 1, and the corresponding relationship between the temperature difference level and the temperature difference change rate level and the capability output value is shown in table 2. The real-time environment temperature and the set temperature are matched to the corresponding temperature difference grade of the corresponding temperature difference interval according to the temperature difference between the real-time environment temperature and the set temperature, and the corresponding capacity output is determined according to the temperature difference grade and the temperature difference change rate grade.

TABLE 1 temperature differential, rate of change of temperature differential, and Capacity output level

TABLE 2 temperature difference level and temperature difference change rate level and output capacity corresponding relationship

Furthermore, in order to prevent the unit from running in excess or overtime, the control device 1 is also provided with a critical running temperature (CT) and a delayed shutdown time (st), when the unit reaches the set temperature but does not exceed the critical running temperature (CT), the unit keeps running at a minimum load until the unit runs to the delayed shutdown time (st), the unit stops running, the number of compressors frequently started and stopped in the unit is effectively reduced, and the water temperature is kept balanced. Specifically, corresponding critical operating temperature (CT) and delay shutdown time (st) are respectively set corresponding to each operating mode, so that cost consumption is reduced, and operating operation quality in each mode is improved.

Preferably, the cooling and heat recovery mode is used as an example, in which the heat recovery and cooling functions of the heat recovery unit 21 are operated following the principle of preferentially starting the unit with heat recovery. Firstly, the temperature differences of the refrigeration and heat recovery functions, namely the refrigeration temperature difference delta T1 and the heat recovery temperature difference delta T2, are respectively obtained according to the real-time environment temperature and the set temperatures (the refrigeration set temperature ST1 and the heat recovery set temperature ST2) in the refrigeration and heat recovery modes, so that the corresponding temperature difference grade and the corresponding temperature difference change rate grade are matched, and the corresponding refrigeration capacity output P1 and the corresponding heat recovery capacity output P2 are determined. If the refrigeration capacity output and the heat recovery capacity output of the heat recovery unit 21 both satisfy the refrigeration capacity output P1 and the heat recovery capacity output P2, it is not necessary to start other units, wherein when the operation of the heat recovery unit 21 reaches the set temperatures (refrigeration set temperature ST1, heat recovery set temperature ST2) but does not exceed the set critical temperatures (refrigeration critical temperature CT1, heat recovery critical temperature CT2), the unit maintains minimum load operation until the operation reaches the delayed shutdown time (refrigeration delayed shutdown time ST1, heat recovery delayed shutdown time ST2), and the heat recovery unit 21 is shut down. If the capacity output of the heat recovery unit 21 does not satisfy the refrigeration capacity output P1 or the heat recovery capacity output P2, the ordinary air-cooled heat pump unit 22 and the water source heat pump unit 23 participate in calculation, and capacity calculation is performed according to the temperature difference and the temperature difference change rate, and the insufficient capacity output is distributed to the ordinary air-cooled heat pump unit 22 and the water source heat pump unit 23, wherein if the refrigeration capacity output P1 is large, the refrigeration capacity output P1 can be preferentially distributed to the water source heat pump unit 23, that is, the unit with large capacity is preferentially started, so that fewer compressors can be operated to meet the requirement, and the operation efficiency is improved.

In this embodiment, the water source heat pump unit 23 has higher refrigeration energy efficiency than the heat recovery unit 21 and the ordinary air-cooled heat pump unit 22. Specifically, the refrigeration energy efficiency coefficient of the water source heat pump unit 23 can reach 3.5-4.6, and is improved by about 40%.

In the present embodiment, referring to fig. 1 and 2, two user hot water ports 211 are provided on the heat recovery unit 21, a water inlet connector on one user hot water port 211 is communicated with a water outlet end of the user hot water module 4 through the first water pump 41, and a water outlet connector on the other user hot water port 211 is communicated with a water inlet end of the user hot water module 4. The above arrangement enables heat exchange between the heat recovery unit 21 and the user-side hot water module 4, and the heat recovery unit 21 provides hot water for the user hot water module 4 and operates the heat recovery function in the water heater mode, the cooling and heat recovery mode, and the heating and hot water mode.

In this embodiment, referring to fig. 1, the user-side air conditioning module 3 is respectively communicated with the interconnected unit module 2 through a first pipeline and a second pipeline, the first pipeline is provided with a second water pump 31, the second water pump 31 can drive a medium in the user-side air conditioning module 3 to flow to the interconnected unit module 2, and the medium in the interconnected unit module 2 is conveyed to the user-side air conditioning module 3 through the second pipeline. The arrangement enables the user side air conditioning module 3 and the heat recovery unit 21, the common air-cooled heat pump unit 22 and the water source heat pump unit 23 in the interconnection unit module 2 to exchange heat, and the heat can be distributed to different units based on the computing capacity, so that the refrigeration or heating functions in different modes can be realized with optimal operation efficiency.

Further, referring to fig. 1 and 2, two user air conditioning ports 212 are further disposed on the heat recovery unit 21, one user air conditioning port 212 is communicated with the medium output port of the user side air conditioning module 3 through a first pipeline, and the other user air conditioning port 212 is communicated with the medium input port of the user side air conditioning module 3 through a second pipeline. The arrangement enables the user side air conditioning module 3 and the heat recovery unit 21 to exchange heat, and realize the cooling or heating function in different modes.

Further, referring to fig. 1 and fig. 2, the common air-cooled heat pump unit 22 is provided with a water inlet 221 and a water outlet 222, the water inlet 221 is communicated with a medium output port of the user-side air conditioning module 3 through a first pipeline, and the water outlet 222 is communicated with a medium input port of the user-side air conditioning module 3 through a second pipeline. The arrangement enables the air conditioning module 3 at the user side and the common air-cooled heat pump unit 22 to exchange heat, and realizes the refrigeration or heating function in different modes.

Further, referring to fig. 1 and fig. 2, the water source heat pump unit 23 is provided with two evaporator ports 231, one evaporator port 231 is communicated with the medium output port of the user side air conditioning module 3 through a first pipeline, and the other evaporator port 231 is communicated with the medium input port of the user side air conditioning module 3 through a second pipeline. The arrangement enables the user side air conditioning module 3 and the water source heat pump unit 23 to exchange heat, and the refrigeration or heating function is realized in different modes.

In this embodiment, referring to fig. 1, the heat pump system further includes a cooling tower 5, and the cooling tower 5 is communicated with the water source heat pump unit 23, so as to improve the refrigeration efficiency of the water source heat pump unit 23.

Further, referring to fig. 1 and fig. 2, the water source heat pump unit 23 is further provided with two condenser ports 232, one condenser port 232 is communicated with the water outlet end of the cooling water tower 5 through the third water pump 51, the third water pump 51 drives the water in the cooling water tower 5 to enter the water source heat pump unit 23, and the other condenser port 232 is communicated with the water inlet end of the cooling water tower 5. The arrangement enables the water source heat pump unit 23 and the cooling water tower 5 to exchange heat, and is beneficial to the realization of high-efficiency refrigeration of the water source heat pump unit 23. Further, referring to fig. 1 and 2, the water source heat pump unit 23 is further provided with a drain port 233, the drain port 233 is configured to drain the wastewater in the water source heat pump unit 23, and the water source heat pump unit 23 does not need to be used during normal operation for emergency.

Specifically, the communication line is a CAN communication line, so that data communication between the unit line controller 11 in the control device 1 and the first control module, the second control module and the third control module is stronger in real-time performance and high in reliability, and the stability of unit operation in the interconnected unit module 2 is guaranteed.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An interconnection system of an air source heat pump heat recovery unit, comprising:

the control device (1), the said control device (1) includes the line controller (11) of the unit, first control module, second control module and third control module;

the heat pump system comprises an interconnected unit module (2), wherein the interconnected unit module (2) comprises a heat recovery unit (21), a common air-cooled heat pump unit (22) and a water source heat pump unit (23), a first control module is configured on the heat recovery unit (21), a unit line controller (11) is connected with the first control module, a second control module is configured on the common air-cooled heat pump unit (22), the second control module is connected with the first control module through a communication line, a third control module is configured on the water source heat pump unit (23), and the third control module is connected with the first control module through a communication line;

the user side air conditioning module (3), the user side air conditioning module (3) is communicated with the interconnected machine set module (2);

the user side hot water module (4), the user side hot water module (4) is communicated with the heat recovery unit (21).

2. The interconnection system of air source heat pump heat recovery unit according to claim 1, wherein the heat recovery unit (21) is provided with two user hot water ports (211), one of the user hot water ports (211) is connected to the water outlet end of the user side hot water module (4) through a first water pump (41), and the other user hot water port (211) is connected to the water inlet end of the user side hot water module (4).

3. The interconnection system of the air source heat pump heat recovery unit according to claim 1, wherein the user side air conditioning module (3) is communicated with the interconnection unit module (2) through a first pipeline and a second pipeline respectively, the first pipeline is provided with a second water pump (31), the second water pump (31) can drive the medium in the user side air conditioning module (3) to flow to the interconnection unit module (2), and the medium in the interconnection unit module (2) is conveyed to the user side air conditioning module (3) through the second pipeline.

4. Interconnection system of air source heat pump heat recovery unit according to claim 3, characterized in that two user air conditioning ports (212) are provided on the heat recovery unit (21), one of the user air conditioning ports (212) being in communication with the medium outlet of the user side air conditioning module (3) through the first pipe and the other user air conditioning port (212) being in communication with the medium inlet of the user side air conditioning module (3) through the second pipe.

5. The interconnection system of the air source heat pump heat recovery unit according to claim 3, wherein the common air-cooled heat pump unit (22) is provided with a water inlet port (221) and a water outlet port (222), the water inlet port (221) is communicated with the medium output port of the user-side air conditioning module (3) through the first pipeline, and the water outlet port (222) is communicated with the medium input port of the user-side air conditioning module (3) through the second pipeline.

6. The interconnection system of air source heat pump heat recovery unit according to claim 3, wherein two evaporator ports (231) are provided on the water source heat pump unit (23), one of the evaporator ports (231) is connected to the medium output port of the user side air conditioning module (3) through the first pipeline, and the other evaporator port (231) is connected to the medium input port of the user side air conditioning module (3) through the second pipeline.

7. The interconnection system of air source heat pump heat recovery unit according to claim 1, further comprising a cooling tower (5), wherein the cooling tower (5) is connected to the water source heat pump unit (23).

8. The interconnection system of air source heat pump heat recovery unit according to claim 7, wherein the water source heat pump unit (23) is further provided with two condenser ports (232), one condenser port (232) is connected to the water outlet end of the cooling water tower (5) through a third water pump (51), and the other condenser port (232) is connected to the water inlet end of the cooling water tower (5).

9. The interconnected system of air-source heat pump heat recovery units of claim 8, wherein the water-source heat pump unit (23) is further provided with a drain port (233), and the drain port (233) is configured to drain the wastewater in the water-source heat pump unit (23).

10. The interconnected system of air-source heat pump heat recovery units according to any one of claims 1-9, wherein the communication line is a CAN communication line.

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