KR0161215B1 - Refrigerant pump of heating and cooling cycle - Google Patents

Abstract

A solution pump of an absorption heating and cooling cycle that absorbs a working fluid on the low pressure side and discharges it to the high pressure side, wherein the diaphragm is connected to a receiving portion divided into an upper space and a lower space, and connected to the upper pressure space, respectively, A suction passage in which a low pressure solution is inhaled and a discharge passage in which the inhaled low pressure solution is discharged in communication with the high pressure side, and connected to the lower space, respectively, while a suction in which high pressure solution or gas is inhaled in communication with the high pressure side A discharge path for discharging the flow path and the suctioned high pressure solution or gas, a first valve for opening and closing the suction path for the low pressure solution, a second valve for opening and closing the discharge path for the suctioned low pressure solution, and a working fluid of the high pressure part A third valve for opening and closing a suction flow path for opening and a fourth valve for opening and closing a discharge flow path of the working fluid on the suctioned high pressure side; Ruthless solution pump of the absorption type cooling and heating cycles.

Description

Absorption air conditioning cycle solution pump

1 is a flow chart of an absorption refrigeration cycle.

2 is a configuration diagram of a solution pump of a conventional absorption refrigeration cycle.

3 is a block diagram of a solution pump of the absorption refrigeration cycle according to the present invention.

4 is a view for explaining the operation of the solution pump of the absorption refrigeration cycle according to the present invention, (a) is a view for explaining the solution intake process, (b) is a view for explaining the solution discharge process.

* Explanation of symbols for main parts of the drawings

20 tank 21 upper space

25: lower space 30: diaphragm

41, 43, 45, 47: check valve 50: solution tank

The present invention relates to a solution pump of an absorption heating / cooling cycle, and more particularly, to a solution pump of an absorption heating / cooling cycle in which a diaphragm driven by an electric motor and a hydraulic pump is driven by using a solution or refrigerant steam of a high pressure part which is always present in the system. It is about.

As shown in FIG. 1, a general absorption refrigeration cycle is a regenerator (1, 1) that generates ammonia vapor by heating and boiling NH3-Water strong solution to generate ammonia vapor. Generator), rectifier (4, Rectifier) for condensing and rectifying water vapor of ammonia vapor generated from the regenerator (1), condenser coil (5, Condenser Coil) for condensing the refrigerant vapor from the rectifier (4), actual refrigerant Pressure of the evaporator (8), the absorber (11), the absorber coil (12), and the regenerator (1), which is a high pressure part, to absorb the refrigerant vapor generated from the evaporator (8). Coder Restrictor 9 (Evaporator Restrictor) 5 to lower the pressure reducing unit (Solution Restrictor 2) and the condenser pressure down to the pressure of the low pressure part, Bo Is composed of a solution pump (13, Solution Pump), a circulating pump (10, Chilled Water Circulation Pump) for pressure-feeding the water into the indoor unit.

As described above, in order to send the solution of the low pressure portion to the high pressure portion, a solution pump 13 is necessary.

2 shows such a conventional solution pump 13, the main components of which are an electric motor 13i and a pulley 13j, a hydraulic pump 13f and a pulley 13g, a belt 13h connecting the pulleys, There is a diaphragm 13a that moves a fluid, and a solution tank 13b. The steel solution produced in the absorber coil 12 enters the tank 13b of the solution pump through the steel solution inlet pipe 13c, and the tank 13b through the tank 13b through the steel solution discharge pipe 13d by the pump. ) And flows through the coils in the rectifier 4 and the absorber 11 to be fed to the regenerator 1 on the high pressure side. The solution pump 13 is a diaphram type, and the diaphragm 13a is driven by the hydraulic pump 13f. At this time, the discharge check valve 13sv2 and the suction check valve 13sv1 alternately open and close the steel solution. It sucks into the tank 13d and discharges.

The working principle is as follows.

The solution inflow process is performed when the oil moves from the diaphragm portion 13a to the hydraulic pump 13f side through the hydraulic transfer pipe 13e, and the suction check valve 13SV1 opens and the diaphragm 13a descends. It flows into this tank 13b.

In the solution discharging process, as the oil moves from the hydraulic pump side to the diaphragm portion through the hydraulic transfer pipe 13e, the suction check valve 13SV1 is closed, the discharge check valve 13SV2 is opened, and the diaphragm 13a is opened. This rises and the solution is discharged from the tank 13b. The above process is repeated to inhale and discharge.

The conventional solution pump has a problem that the diaphragm is driven by an electric motor and a hydraulic pump, so that the components are very complicated, which increases the cost of the system, increases the size, and also the weight.

The present invention is to solve the problems of the prior art, the diaphragm is driven by using a solution or refrigerant steam of the high pressure portion always present in the system to simplify the configuration to reduce the size and weight and manufacturing cost and reduce the power consumption It is an object of the present invention to provide a solution pump for absorption cooling and heating cycle.

In order to achieve the above object, the solution pump of the absorption type heating and cooling cycle of the present invention is a solution pump of the absorption type heating and cooling cycle that absorbs the working fluid on the low pressure side and discharges it to the high pressure side, divided by the diaphragm into the upper space and the lower space. Connected to each of the receiving portion and the upper space, respectively, connected to the low pressure side and a suction flow path for suction of the low pressure solution, and a discharge flow path for communicating with the high pressure side to discharge the sucked low pressure solution, respectively connected to the lower orphan. On the other hand, in communication with the high-pressure side and the suction flow path for the high pressure solution or gas is sucked in, the first valve for opening and closing the discharge flow path for the discharged high pressure solution or gas and the suction flow path of the low pressure solution and the discharge of the suction low pressure solution A second valve for opening and closing the flow path, a third valve for opening and closing the suction flow path for sucking the working fluid of the high pressure portion, and And a fourth valve for opening and closing the discharge flow path of the working fluid on the suction side of the high pressure part.

Hereinafter, the solution pump of the absorption type cooling and heating cycle of the present invention will be described in detail with reference to the accompanying drawings.

In the solution pump of the absorption heating and cooling cycle of the present invention, as shown in FIG. 3, the inner space of the hollow storage tank 20 is moved to the upper space 21 and the lower space 25 by the diaphragm 30. Are separated. The upper space 21 is connected to the suction passage 22 which communicates with the low pressure side and sucks the low pressure solution and the discharge passage 23 which communicates with the high pressure side and discharges the sucked low pressure solution, and the lower space. Numeral 25 is connected to the high pressure part side and is connected to the suction passage 26 through which the high pressure solution or gas is sucked and the discharge passage 27 through which the sucked high pressure solution or gas is discharged.

On the other hand, the first check valve 41 for opening and closing the suction passage 22, the second check valve 43 for opening and closing the discharge passage 23 of the suctioned working fluid and the working fluid of the high pressure portion And a third check valve 45 which is electrically operated while opening and closing the suction passage 26, and a fourth check valve which is electrically operated while opening and closing the discharge passage 27 of the working fluid on the suction side of the high pressure part ( 47) are installed respectively.

On the other hand, the suction passage 22 is in communication with the solution tank 50 in communication with the steel solution inlet pipe of the low pressure portion.

Hereinafter, the operation of the solution pump of the absorption type air-conditioning cycle of the present invention.

First, in the suction process, the third check valve 45 closes the suction flow path 26 by an electrical signal, and the fourth check valve 47 is opened by the electrical signal, and the high pressure chemical solution contained in the lower space 25 is applied. It discharges through this discharge channel 27. Accordingly, as the diaphragm 30 descends, the first check valve 41 is opened and the second check valve 43 is closed. Therefore, the strong solution of the low pressure part is sucked into the upper space 21 of the diaphragm 30 through the suction flow path 22.

Subsequently, in the discharging process, the fourth check valve 47 is already closed by the electrical signal, and the third check valve 46 is opened by the electrical signal, and the high pressure chemical solution is passed through the suction passage 26 through the diaphragm 30. Flows into the lower space 25). As a result, as the diaphragm 30 rises, the first check valve 41 is closed and the second check valve 43 is opened so that the low-pressure steel solution contained in the upper space is discharged through the discharge passage 23.

On the other hand, the first pump using the high pressure solution as a drive source and the high pressure refrigerant vapor as the drive source to drive the second, or the first pump using the high pressure refrigerant steam as the drive source, and secondly using the high pressure solution as the drive source can do.

If the pressure increase from low pressure to high pressure is insufficient for the pressure of the solution or refrigerant, it can be used as a first rise or second rise mechanism by connecting two stages in series with other solution pumps.

The use of a solution pump like the present invention does not affect the system because a pressure reducing device (Restrictor) is required in the system to lower the pressure of the high pressure part to the pressure of the low pressure part.

As described above, according to the present invention, the diaphragm is driven by using the solution or refrigerant vapor of the high pressure part which is always present in the system to simplify the configuration, thereby reducing the size, weight, manufacturing cost, and reducing the power consumption. There is.

Claims (4)

A solution pump of an absorption heating and cooling cycle that absorbs a working fluid on the low pressure side and discharges it to the high pressure side, wherein the diaphragm is connected to a receiving portion divided into an upper space and a lower space, and connected to the upper pressure space, respectively, A suction flow passage in which a low pressure solution is sucked in and a discharge flow passage in which the inhaled low pressure solution is discharged in communication with the high pressure side, and a suction flow passage connected to the lower space, respectively, and in communication with the high pressure side, where a high pressure solution or gas is sucked in. And sucking the working fluid of the high pressure part, a discharge flow path through which the suctioned high pressure solution or gas is discharged, a first valve opening and closing the suction flow path of the low pressure solution, and a second valve opening and closing the discharge flow path of the suction low pressure solution, and a working fluid of the high pressure part. And a third valve for opening and closing a suction flow path for opening and a fourth valve for opening and closing a discharge flow path of the working fluid on the suctioned high pressure side. An absorption solution pump of the air conditioning cycle, characterized in that. The solution pump of claim 1, wherein the third valve and the fourth valve are electrically operated. The solution pump of an absorption heating and cooling cycle according to claim 1, wherein the working fluid is a high pressure solution. The solution pump according to claim 1, wherein the working fluid is a high pressure refrigerant vapor.