CN215216764U - Air-cooled heat pump total heat recovery unit - Google Patents
Air-cooled heat pump total heat recovery unit Download PDFInfo
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- CN215216764U CN215216764U CN202120463105.6U CN202120463105U CN215216764U CN 215216764 U CN215216764 U CN 215216764U CN 202120463105 U CN202120463105 U CN 202120463105U CN 215216764 U CN215216764 U CN 215216764U
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Abstract
A first four-way valve and a second four-way valve are sequentially arranged between a compressor and an air-cooled heat exchanger, a second interface of the first four-way valve is connected with an outlet of a water-side heat exchanger, a third interface of the first four-way valve is connected with an inlet of a gas-liquid separator, a second interface of the second four-way valve is connected with an inlet of the heat recovery heat exchanger, a third interface of the second four-way valve is connected between a third interface of the first four-way valve and an inlet of the gas-liquid separator, the first four-way valve is used for switching of a refrigeration mode and a heating mode, and the second four-way valve is used for switching of the air-cooled heat exchanger and the heat recovery heat exchanger; the first electromagnetic valve is arranged at the outlet of the air-cooled heat exchanger, the second electromagnetic valve is arranged at the outlet of the heat recovery heat exchanger, the third electromagnetic valve is arranged at the inlet of the water-side heat exchanger, the fourth electromagnetic valve is arranged at the third interface of the first four-way valve, and the fifth electromagnetic valve is arranged at the third interface of the second four-way valve, so that the refrigeration effect of all refrigerants is ensured.
Description
Technical Field
The utility model relates to a refrigerating system field, especially a total heat recovery unit of air-cooled heat pump.
Background
When the air-cooled heat pump unit is used for refrigerating, a large amount of condensation heat is directly discharged to the atmosphere, energy waste is caused, and therefore more and more attention and popularization are paid to recycling of energy achieved by hot water preparation through condensation heat. The condensation heat recovery of the air-cooled heat pump unit is generally divided into total heat recovery and partial heat recovery, and the total heat recovery refers to the utilization of 100% of heat emitted in the condensation process of a refrigerant in the refrigeration link of the air-cooled heat pump unit, so as to prepare hot water and realize the recycling of condensation heat. The common air-cooled heat pump total heat recovery unit is generally designed by adding a heat recovery heat exchanger on the basis of a common unit to be connected with an air-cooled heat exchanger in parallel, and realizing the recycling of condensation heat by switching the working states of the air-cooled heat exchanger and the heat recovery heat exchanger through an electromagnetic valve. However, no matter the operation is switched to the operation of the air cooling heat exchanger or the operation of the heat recovery heat exchanger in the process, the refrigerant in the other heat exchanger which stops operating is accumulated in the heat exchanger, so that the refrigerant participating in circulation is reduced, and the reliable operation of the system is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses participate in the refrigerant of circulation when retrieving to the total heat recovery unit condensation heat of current air-cooled heat pump and reduce, can not all participate in the refrigeration work that circulates, provide a total heat recovery unit of air-cooled heat pump.
The technical scheme of the utility model specifically does:
a full heat recovery unit of an air-cooled heat pump comprises a gas-liquid separator, a compressor, an air-cooled heat exchanger, a liquid storage device, an expansion valve and a water-side heat exchanger which are sequentially connected through pipelines, wherein the air-cooled heat exchanger is connected with the heat recovery heat exchanger in parallel, a first four-way valve and a second four-way valve are sequentially arranged between the compressor and the air-cooled heat exchanger, a second interface of the first four-way valve is connected with an outlet of the water-side heat exchanger, a third interface of the first four-way valve is connected with an inlet of the gas-liquid separator, a second interface of the second four-way valve is connected with an inlet of the heat recovery heat exchanger, a third interface of the second four-way valve is connected between the third interface of the first four-way valve and the inlet of the gas-liquid separator, the first four-way valve is used for switching between a refrigeration mode and a heating mode, and the second four-way valve is used for switching between the air-cooled heat exchanger and the heat recovery heat exchanger; the air-cooled heat exchanger is provided with a first electromagnetic valve at the outlet, the heat recovery heat exchanger is provided with a second electromagnetic valve at the outlet, the water side heat exchanger is provided with a third electromagnetic valve at the inlet, a fourth electromagnetic valve is arranged at a third interface of the first four-way valve, and a fifth electromagnetic valve is arranged at a third interface of the second four-way valve.
And a first interface of the first four-way valve is connected with an outlet of the compressor, a fourth interface of the first four-way valve is connected with a first interface of the second four-way valve, and a fourth interface of the second four-way valve is connected with an inlet of the air-cooled heat exchanger.
And a fan is arranged at the air-cooled heat exchanger.
The air-cooled heat exchanger is internally provided with a first pressure sensor, the heat recovery radiator is internally provided with a second pressure sensor, the water side heat exchanger is internally provided with a third pressure sensor, and the first pressure sensor, the second pressure sensor and the third pressure sensor are electrically connected with the unit controller.
Compared with the prior art, the air-cooled heat pump total heat recovery unit of the utility model realizes the communication between the outlet of the compressor and the inlets of two condensers of the air-cooled heat exchanger or the heat recovery heat exchanger or the switching between two modes of the communication between the outlet of the compressor and the inlet of the water-side heat exchanger through the arrangement of the first four-way valve, wherein, under the power-off state of the first four-way valve, the refrigerating mode is adopted when the outlet of the compressor is communicated with the inlets of the air-cooled heat exchanger or the heat recovery heat exchanger, and the heating mode is adopted when the outlet of the compressor is communicated with the inlet of the water-side heat exchanger under the power-on state of the first four-way valve; the setting of second cross valve has realized the switching between two kinds of condensers of air-cooled heat exchanger and heat recovery heat exchanger, and wherein, under the second cross valve power-off state, the work of air-cooled heat exchanger, heat recovery heat exchanger is out of work, only refrigerates or heats the mode this moment, does not prepare hot water, and under the second cross valve on-state, heat recovery heat exchanger work, the air-cooled heat exchanger is out of work, can prepare hot water this moment.
When the air-cooled heat exchanger works and the heat recovery heat exchanger does not work, the fifth electromagnetic valve is opened through the arrangement of the fifth electromagnetic valve, so that the heat recovery heat exchanger, the gas-liquid separator and the compressor pipeline are communicated, the refrigerant and the refrigerating oil and the like reserved in the heat recovery heat exchanger can be sucked into the gas-liquid separator through the compression and suction action of the compressor and continuously participate in the refrigerant circulation, when the air-cooled heat exchanger works and the air-cooled heat exchanger does not work, the third electromagnetic valve is opened through the arrangement of the third electromagnetic valve, so that the air-cooled heat exchanger, the water side heat exchanger, the gas-liquid separator and the compressor pipeline are communicated, the refrigerant and the refrigerating oil and the like reserved in the air-cooled heat exchanger are sucked into the water side heat exchanger through the compression and suction action of the compressor and continuously participate in the refrigerant circulation, therefore, compared with the prior art, whether the air-cooled heat exchanger or the heat recovery heat exchanger works is switched, the refrigerant reserved in the heat exchanger which stops working can be ensured to participate in the refrigerant circulation again, the refrigeration effect of all the refrigerants is ensured to be exerted, and the reliable operation of the system is ensured.
Drawings
Fig. 1 is a schematic view of the cooling mode operation state of the air-cooled heat pump total heat recovery unit of the present invention.
Fig. 2 is the heating mode operation state schematic diagram of the air-cooled heat pump total heat recovery unit of the present invention.
Fig. 3 is the schematic view of the operation state of the cooling and heating water mode of the air-cooled heat pump total heat recovery unit of the present invention.
Fig. 4 is the schematic view of the hot water making mode operation state of the air-cooled heat pump total heat recovery unit of the present invention.
Wherein, 1 is a compressor; 2 is a first four-way valve; 3 is a second four-way valve; 4 is an air-cooled heat exchanger; 5 is a fan; 6 is a heat recovery heat exchanger; 7 is a reservoir; 8 is an expansion valve; 9 is a water side heat exchanger; 10 is a gas-liquid separator; 11 is a fourth electromagnetic valve; 12 is a fifth electromagnetic valve; 13 is a first solenoid valve; 15 is a third solenoid valve; 16 is a second solenoid valve; 17 is the water inlet of the heat recovery heat exchanger; 18 is the water outlet of the heat recovery heat exchanger; 19 is the water side heat exchanger water inlet; 20 is a water outlet of the water side heat exchanger; 21 is a first one-way valve; 22 is a second one-way valve; 23 is a third one-way valve; and 24 is a fourth check valve.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
As shown in fig. 1-4, the utility model provides an air-cooled heat pump total heat recovery unit, including compressor 1, first cross valve 2, second cross valve 3, air-cooled heat exchanger 4, heat recovery heat exchanger 6, reservoir 7, expansion valve 8, water side heat exchanger 9, vapour and liquid separator 10, air-cooled heat exchanger 4 and heat recovery heat exchanger 6 are the condenser, heat recovery heat exchanger 6 includes heat recovery heat exchanger water inlet 17 and heat recovery heat exchanger delivery port 18, be used for recycling the condensation heat and preparing hot water for use, the domestic water that needs to be prepared into hot water enters into heat recovery heat exchanger 6 from heat recovery heat exchanger water inlet 17, then flows out from heat recovery heat exchanger delivery port 18, when flowing through heat recovery heat exchanger 6, through the heat transfer with the heat transfer of condensation to feed water, heat preparation hot water, for use; the water side heat exchanger 9 is an indoor refrigerating end, the water side heat exchanger 9 comprises a water side heat exchanger water inlet 19 and a water side heat exchanger water outlet 20, unit circulating water enters the water side heat exchanger 9 from the water side heat exchanger water inlet 19, is called as cold water after being subjected to heat transfer with a refrigerant, flows out from the water side heat exchanger water outlet 20 to a position needing cooling to form circulating cooling water, the refrigeration is continuously carried out, the refrigerant and the circulating water are two mutually independent pipelines, and the circulating water is cooled through the heat transfer.
The outlet of the compressor 1 is communicated with the first interface A of the first four-way valve 2, the fourth interface D of the first four-way valve 2 is communicated with the first interface P of the second four-way valve 3, the fourth interface R of the second four-way valve 3 is communicated with the inlet of the air-cooled heat exchanger 4, the outlet of the air-cooled heat exchanger 4 is communicated with the inlet of the liquid storage device 7, the outlet of the liquid storage device 7 is communicated with the inlet of the expansion valve 8, the outlet of the expansion valve 8 is communicated with the inlet of the water-side heat exchanger 9, the outlet of the water-side heat exchanger 9 is communicated with the second interface B of the first four-way valve 2, the third interface C of the first four-way valve 2 is communicated with the inlet of the gas-liquid separator 10, and the outlet of the gas-liquid separator 10 is communicated with the inlet of the compressor 1, so that a complete circulation loop is formed.
The heat recovery heat exchanger 6 is connected with the air-cooled heat exchanger 4 in parallel, the inlet of the heat recovery heat exchanger 6 is communicated with the second interface Q of the second four-way valve 3, and the outlet of the heat recovery heat exchanger 6 is communicated with the inlet of the liquid reservoir 7; a third interface S of the second four-way valve 3 is connected between the third interface C of the first four-way valve 2 and the gas-liquid separator 10; a first electromagnetic valve 13 is arranged at the outlet of the air-cooled heat exchanger 4, a second electromagnetic valve 16 is arranged at the outlet of the heat recovery heat exchanger 6, a third electromagnetic valve 15 is arranged at the inlet of the water-side heat exchanger 9, a fourth electromagnetic valve 11 is arranged at a third interface C of the first four-way valve 2, and a fifth electromagnetic valve 12 is arranged at a third interface S of the second four-way valve 3.
A pipeline led out from the outlet of the air-cooled heat exchanger 4 is divided into two passages, one L1 pipeline is communicated with the inlet of the liquid reservoir 7, a third one-way valve 23 is arranged on the L1 pipeline, refrigerant can only flow from the air-cooled heat exchanger 4 to the direction of the liquid reservoir 7, the other L2 pipeline is communicated with the outlet of the expansion valve 8, a first one-way valve 21 is arranged on the L2 pipeline, and the refrigerant can only flow from the outlet of the expansion valve 8 to the outlet of the air-cooled heat exchanger 4; an L3 pipeline is further connected between the third check valve 23 and the inlet of the liquid storage device 7, an L4 pipeline is further connected between the first check valve 21 and the outlet of the expansion valve 8, the other end of the L3 pipeline is converged with the other end of the L4 pipeline and then communicated with the inlet of the water-side heat exchanger 9, a fourth check valve 24 is arranged on the L3 pipeline, refrigerant can only flow from the water-side heat exchanger 9 to the inlet of the liquid storage device 7, a second check valve 22 is arranged on the L4 pipeline, refrigerant can only flow from the outlet of the expansion valve 8 to the inlet of the water-side heat exchanger 9, and the check valves are arranged for adjusting the operation direction of the refrigerant in the two cooling and heating modes.
The first four-way valve 2 is used for switching a refrigerating mode and a heating mode, in a power-off state, a first interface A and a fourth interface D of the first four-way valve 2 are communicated to form a first power-off channel of the first four-way valve 2, a second interface B is communicated with a third interface C to form a second power-off channel of the first four-way valve 2, and at the moment, an outlet of the compressor 1 is communicated with an inlet of the air-cooled heat exchanger 4 or the heat recovery heat exchanger 6 and is in the refrigerating mode; in the power-on state, the first interface a and the second interface B of the first four-way valve 2 are communicated to form a first power-on passage of the first four-way valve 2, the third interface C and the fourth interface D are communicated to form a second power-on passage of the first four-way valve 2, and at the moment, the outlet of the compressor 1 is communicated with the water side heat exchanger 9 and is in a heating mode. The second four-way valve 3 is used for switching the air-cooled heat exchanger 4 and the heat recovery heat exchanger 6, in a cooling mode and in a power-off state, a first interface P and a fourth interface R of the second four-way valve 3 are communicated to form a first power-off passage of the second four-way valve, a second interface Q and a third interface S are communicated to form a second power-off passage of the second four-way valve, the first interface P and the second interface Q of the second four-way valve 3 are communicated in a power-on state to form a first power-on passage of the second four-way valve 3, and the third interface S and the fourth interface R are communicated to form a second power-on passage of the second four-way valve 3. The first four-way valve 2 and the second four-way valve 3 are switched between the power-on state and the power-off state, so that the switching of different modes of refrigeration, heating, refrigeration + hot water production and hot water production can be realized.
The utility model discloses the during operation:
in a refrigeration mode: the air cooling heat exchanger 4 and the water side heat exchanger 9 work, and the heat recovery heat exchanger 6 does not work. In the cooling mode, as shown in fig. 1, the first four-way valve 2 and the second four-way valve 3 are both de-energized, the first solenoid valve 13, the third solenoid valve 15, and the fourth solenoid valve 11 are opened, the fifth solenoid valve 12 is first in an opened state, the second solenoid valve 16 is closed, at this time, the first port a and the fourth port D of the first four-way valve 2 are communicated to form a first passage for de-energizing the first four-way valve 2, the second port B and the third port C are communicated to form a second passage for de-energizing the first four-way valve 2, the first port P and the fourth port R of the second four-way valve 3 are communicated to form a first passage for de-energizing the second four-way valve, the second port Q and the third port S are communicated to form a second passage for de-energizing the second four-way valve, and the refrigerant flows in the direction of the compressor 1 → the first port a → the first four-way valve 2, the fourth port D → the first port P → the second four-way valve 3 → the fourth port R → the second four-way valve 3 → the air-cooling heat exchanger → the first solenoid valve 13 → the third one-way valve 23 The liquid accumulator 7 → the expansion valve 8 → the second check valve 22 → the third solenoid valve 15 → the water side heat exchanger 9 → the second port B of the first four-way valve 2 → the third port C of the first four-way valve 2 → the fourth solenoid valve 11 → the gas-liquid separator 10 → the compressor 1. In a refrigerating state, when the fifth electromagnetic valve 12 is opened, the heat recovery heat exchanger 6 → the second interface Q of the second four-way valve 3 → the third interface S of the second four-way valve 3 → the fifth electromagnetic valve 12 → the gas-liquid separator 10 → the communication passage of the compressor 1 is formed, and under the compression and suction action of the compressor 1, the refrigerant oil and the like remained in the heat recovery heat exchanger 6 are sucked into the gas-liquid separator 10 through the suction action, so that the refrigerant originally remained in the heat recovery heat exchanger 6 can continuously participate in the circulation operation of the refrigerant, the refrigerant is ensured to participate in the refrigeration completely, and the operation reliability of the unit refrigerating system is ensured. And (3) according to the preset running time, after all the refrigerant in the heat recovery heat exchanger 6 to be stopped enters the gas-liquid separator 10, closing the fifth electromagnetic valve 12 and closing the flow path of the heat recovery heat exchanger 6.
In the heating mode: the air cooling heat exchanger 4 and the water side heat exchanger 9 work, and the heat recovery heat exchanger 6 does not work. In the heating mode, as shown in fig. 2, the first four-way valve 2 is energized, the second four-way valve 3 is de-energized, the first solenoid valve 13, the third solenoid valve 15, and the fourth solenoid valve 11 are opened, the second solenoid valve 16 is closed, the fifth solenoid valve 12 is first in the open state, at this time, the first port a and the second port B of the first four-way valve 2 are communicated to form an energized first passage of the first four-way valve 2, the third port C and the fourth port D are communicated to form an energized second passage of the first four-way valve 2, the first port P and the fourth port R of the second four-way valve 3 are communicated to form an de-energized first passage of the second four-way valve 3, the second port Q and the third port S are communicated to form a de-energized second passage of the second four-way valve, and the refrigerant flows in the direction of the compressor 1 → the first port a → the first four-way valve 2, the second port B → the water side heat exchanger 9 → the third solenoid valve 15 → the fourth one-way valve 24 → 7 → the expansion valve 8 → the first one-way valve 21 → the first solenoid valve 13 → the air The cold heat exchanger 4 → the fourth port R of the second four-way valve 3 → the first port P of the second four-way valve 3 → the fourth port D of the first four-way valve 2 → the third port C of the first four-way valve 2 → the fourth solenoid valve 11 → the gas-liquid separator 10 → the compressor 1. In the heating mode, when the fifth electromagnetic valve 12 is opened, the heat recovery heat exchanger 6 → the second interface Q of the second four-way valve 3 → the third interface S of the second four-way valve 3 → the fifth electromagnetic valve 12 → the gas-liquid separator 10 → the communication passage of the compressor 1 is formed, and under the compression and suction action of the compressor 1, the refrigerant and the refrigerant oil and the like remained in the heat recovery heat exchanger 6 are sucked into the gas-liquid separator 10 through the suction action, so that the refrigerant originally remained in the heat recovery heat exchanger 6 can continuously participate in the circulation operation of the refrigerant, the refrigerant is ensured to participate in the refrigeration completely, and the operation reliability of the unit refrigeration system is ensured. And (3) according to the preset running time, after all the refrigerant in the heat recovery heat exchanger 6 to be stopped enters the gas-liquid separator 10, closing the fifth electromagnetic valve 12 and closing the flow path of the heat recovery heat exchanger 6.
In a refrigeration and hot water making mode: the refrigeration + heating water mode is a total heat recovery mode, and when the unit is refrigerated, the heat emitted in the condensation process is completely utilized, and the heat recovery heat exchanger 6 is used for preparing domestic hot water to realize the recovery of condensation heat. In this mode, the heat recovery heat exchanger 6 and the water side heat exchanger 9 operate, and the air cooling heat exchanger 4 stops operating. In the cooling and heating water mode, as shown in fig. 3, the first four-way valve 2 is powered off, the second four-way valve 3 is powered on, the first solenoid valve 13 is closed, the second solenoid valve 16, the third solenoid valve 15 and the fourth solenoid valve 11 are opened, the fifth solenoid valve is in an opened state first, at this time, the first interface a and the fourth interface D of the first four-way valve 2 are communicated to form a first passage for powering off the first four-way valve 2, the second interface B and the third interface C are communicated to form a second passage for powering off the first four-way valve 2, the first interface P and the second interface Q of the second four-way valve 3 are communicated to form a first passage for powering on the second four-way valve 3, the third interface S and the fourth interface R are communicated to form a second passage for powering on the second four-way valve 3, and the refrigerant runs in the direction of the compressor 1 → the first interface a of the first four-way valve 2 → the first interface D of the first four-way valve 2 → the first interface P of the second four-way valve 3 → the first interface P → the second four-way valve 3 → the second interface Q → the second solenoid valve 16 → the second solenoid valve 3 → the heat recovery heat exchanger 6 → the second solenoid valve 16 → the second solenoid valve 3 → the accumulator 7 → the expansion valve 8 → the second check valve 22 → the third solenoid valve 15 → the water side heat exchanger 9 → the second port B of the first four-way valve 2 → the third port C of the first four-way valve 2 → the fourth solenoid valve 11 → the gas-liquid separator 10 → the compressor 1. In the cooling and heating water mode, when the fifth electromagnetic valve 12 is in an open state, an air-cooled heat exchanger 4 → a fourth interface R of the second four-way valve 3 → a third interface S of the second four-way valve 3 → the fifth electromagnetic valve 12 → the gas-liquid separator 10 → a communication passage of the compressor 1 is formed, and under the compression and suction action of the compressor 1, the refrigerant and the refrigerant oil and the like remained in the air-cooled heat exchanger 4 are sucked into the gas-liquid separator 10 through the suction action of the compressor, so that the refrigerant originally remained in the air-cooled heat exchanger 4 can continuously participate in the refrigerant circulation operation, the refrigerant is ensured to be completely participated in the cooling, and the operation reliability of the unit refrigerating system is ensured. And (3) according to the preset running time, after all the refrigerants in the air-cooled heat exchanger 4 to be stopped are sucked into the gas-liquid separator 10, closing the fifth electromagnetic valve 12 and closing the flow path of the air-cooled heat exchanger 4.
In the hot water making mode: in the hot water making mode, the unit does not refrigerate or heat any more, and only hot water is prepared. The air cooling heat exchanger 4 and the heat recovery heat exchanger 6 work, and the water side heat exchanger 9 stops working. In the heating water mode, as shown in fig. 4, the first four-way valve 2 is powered off, the second four-way valve 3 is powered on, the first solenoid valve 13, the second solenoid valve 16 and the fifth solenoid valve 12 are opened, the third solenoid valve 15 is closed, the fourth solenoid valve 11 is in an open state first, at this time, the first port a and the fourth port D of the first four-way valve 2 are communicated to form a first passage for powering off the first four-way valve 2, the second port B and the third port C are communicated to form a second passage for powering off the first four-way valve 2, the first port P and the second port Q of the second four-way valve 3 are communicated to form a first passage for powering on the second four-way valve 3, the third port S and the fourth port R are communicated to form a second passage for powering on the second four-way valve 3, and the refrigerant operation direction is compressor 1 → the first port a of the first four-way valve 2 → the fourth port D → the first port P of the second four-way valve 3 → the second port Q → the second solenoid valve 16 → the heat exchanger → the second solenoid valve 16 The device 7 → the expansion valve 8 → the first check valve 21 → the first solenoid valve 13 → the air-cooled heat exchanger 4 → the fourth port R of the second four-way valve 3 → the third port S of the second four-way valve 3 → the fifth solenoid valve 12 → the gas-liquid separator 10 → the compressor 1. In the water heating mode, when the fourth electromagnetic valve 11 is in an open state, a communication passage of the water side heat exchanger 9 → the second port B of the first four-way valve 2 → the third port C of the first four-way valve 2 → the fourth electromagnetic valve 11 → the gas-liquid separator 10 → the compressor 1 is formed, and under the compression and suction action of the compressor 1, the refrigerant and the refrigerant oil and the like remained in the water side heat exchanger 9 are sucked into the gas-liquid separator 10 through the continuous suction action of the compressor, so that the refrigerant originally remained in the water side heat exchanger 9 can continuously participate in the refrigerant circulation operation, the refrigerant is ensured to be completely participated in the refrigeration, and the operation reliability of the unit refrigeration system is ensured. And (3) according to the preset running time, after all the refrigerant in the water side heat exchanger 9 to be stopped enters the gas-liquid separator 10, the fourth electromagnetic valve 11 is closed, and the flow path of the water side heat exchanger 9 is closed.
Furthermore, a fan 5 is arranged at the air-cooled heat exchanger 4, so that the heat exchange efficiency of the air-cooled heat exchanger 4 is improved.
Furthermore, a first pressure sensor can be arranged in the air-cooled heat exchanger 4, a second pressure sensor can be arranged in the heat recovery heat exchanger 6, a third pressure sensor can be arranged in the water-side heat exchanger 9, and the first pressure sensor, the second pressure sensor and the third pressure sensor are electrically connected with the unit controller. The unit can no longer preset certain operating time, then close corresponding solenoid valve, but through set up pressure sensor in air-cooled heat exchanger 4 and heat recovery heat exchanger 6, through the pressure value size in air-cooled heat exchanger 4 and heat recovery heat exchanger 6, the water side heat exchanger 9 that the measurement obtained, when the pressure value reduces no longer to change, then the refrigerant suction in the heat exchanger is accomplished, and the unit controller closes corresponding solenoid valve.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (4)
1. The utility model provides a full heat recovery unit of air-cooled heat pump, includes gas-liquid separator (10), compressor (1), air-cooled heat exchanger (4), reservoir (7), expansion valve (8), water side heat exchanger (9) that connect gradually through the pipeline, its characterized in that: the air-cooled heat exchanger (4) is connected in parallel with a heat recovery heat exchanger (6), a first four-way valve (2) and a second four-way valve (3) are sequentially arranged between the compressor (1) and the air-cooled heat exchanger (4), a second interface (B) of the first four-way valve (2) is connected with an outlet of the water side heat exchanger (9), a third interface (C) of the first four-way valve (2) is connected with an inlet of the gas-liquid separator (10), a second interface (Q) of the second four-way valve (3) is connected with an inlet of the heat recovery heat exchanger (6), the third interface (S) of the second four-way valve (3) is connected between the third interface (C) of the first four-way valve (2) and the inlet of the gas-liquid separator (10), the first four-way valve (2) is used for switching a refrigerating mode and a heating mode, and the second four-way valve (3) is used for switching an air cooling heat exchanger (4) and a heat recovery heat exchanger (6); the outlet of the air-cooled heat exchanger (4) is provided with a first electromagnetic valve (13), the outlet of the heat recovery heat exchanger (6) is provided with a second electromagnetic valve (16), the inlet of the water-side heat exchanger (9) is provided with a third electromagnetic valve (15), the third interface (C) of the first four-way valve (2) is provided with a fourth electromagnetic valve (11), and the third interface (S) of the second four-way valve (3) is provided with a fifth electromagnetic valve (12).
2. The air-cooled heat pump total heat recovery unit of claim 1, wherein: the first interface (A) of the first four-way valve (2) is connected with the outlet of the compressor (1), the fourth interface (D) is connected with the first interface (P) of the second four-way valve (3), and the fourth interface (R) of the second four-way valve (3) is connected with the inlet of the air-cooled heat exchanger (4).
3. The air-cooled heat pump total heat recovery unit of claim 1, wherein: and a fan (5) is arranged at the air-cooled heat exchanger (4).
4. The air-cooled heat pump total heat recovery unit of claim 1, wherein: the air-cooled heat exchanger (4) is internally provided with a first pressure sensor, the heat recovery heat exchanger (6) is internally provided with a second pressure sensor, the water side heat exchanger (9) is internally provided with a third pressure sensor, and the first pressure sensor, the second pressure sensor and the third pressure sensor are electrically connected with the unit controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120463105.6U CN215216764U (en) | 2021-03-04 | 2021-03-04 | Air-cooled heat pump total heat recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120463105.6U CN215216764U (en) | 2021-03-04 | 2021-03-04 | Air-cooled heat pump total heat recovery unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215216764U true CN215216764U (en) | 2021-12-17 |
Family
ID=79441690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120463105.6U Active CN215216764U (en) | 2021-03-04 | 2021-03-04 | Air-cooled heat pump total heat recovery unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215216764U (en) |
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2021
- 2021-03-04 CN CN202120463105.6U patent/CN215216764U/en active Active
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