Please select the most similar patent number from A, B, C and D. Which number is?
The present invention provides a plate heat exchanger having a flow-dividing plate path. The heat exchanger comprises a housing and two or more heat exchange modules vertically disposed in the housing. The number of auxiliary heat exchange plates in the uppermost heat exchange module is n1, the number of auxiliary heat exchange plates in the next heat exchange module is n2, and the number of auxiliary heat exchange plates in the next heat exchange module is n3, and so on, where n1, n2, and n3 are natural numbers, and at least one heat exchange module has a non-zero number of auxiliary heat exchange plates therein. In each heat exchange module provided with an auxiliary heat exchange plate, the connection point between a main plate inlet pipe and an inlet-end collection pipe is higher than the connection point between an auxiliary plate inlet pipe and the inlet-end collection pipe. Part of liquid phase substances, including oil, in plate-path fluids are concentrated and converged by means of the inlet-end collection pipe, and are then introduced into a separate auxiliary plate to accelerate discharge of the liquid phase substances, thereby greatly reducing the amount of liquid phase substances and oil passing through heat exchange fins of the main unit, and improving the overall heat exchange efficiency of the device.
A: A closed cooling tower having a tubesheet combined heat exchange piece, comprising a tubesheet combined heat exchanger (8), a blower(4), a solution pump (5), a spray shower (6), a solution reservoir (7) and a frame (9); the combined heat exchanger of tube sheet (8) is formed by connecting a plurality of tubesheet combined heat exchange pieces with an inlet header and an outlet header; the tubesheet combined heat exchange piece comprises a heat transfer plate (2) and a coil pipe (1) formed by processing a heat exchange pipe; the heat transfer plate (2) is provided with a mounting groove (21), and the shape of the mounting groove (21) matches the shape of the coil pipe (1); the coil pipe (1) is mounted inside the mounting groove (21), and the gap between the coil pipe (1) and the mounting groove (21) is filled with a heat conductive bonding layer (3), the heat conductive bonding layer (3) enabling full contact between the heat transfer plate (2) and the coil pipe (1), so as to increase an effective heat exchange area of the coil pipe (1); the heat transfer plate (2) can guide a solution to form a continuous flow surface face and increase a solution heat exchange surface area, improving the heat exchange efficiency as well as reducing the cooling tower volume.
B: Disclosed is a heat exchange plate of a plate-type condenser. The heat exchange plate is formed by welding edges of two plate bodies, an inlet and an outlet which are connected to an inner cavity of the heat exchange plate are welded to the edges of the plate bodies, and a plurality of baffle lines are arranged on the plate bodies to form a circulating baffle flow channel. Round and oval salient points are arranged in a flow channel area to disturb a flow and enhance heat exchange. The round salient points not only enhance the pressure resistance of the flow channel, but also play a role in disturbing a flow, and the oval salient points improve the dynamic performance of a medium flow channel. The heat exchange plate is manufactured by using two methods, one of which involves firstly carrying out rolling forming and then carrying out resistance welding at the salient points of the plate bodies, and the other of which involves firstly carrying out fixed-point welding on two stacked plate bodies and then carrying out forming by means of blowing. The round and oval salient points of the present invention not only enhance heat exchange, but also increase the mechanical strength of the plate bodies; and the heat exchange plate of the plate-type condenser has a compact structure, is easy to assemble, is resistant to high temperatures and high pressure, has a high heat exchange efficiency, and has a long service life.
C: A heat exchanging plate applicable in a plate and shell-type heat exchanger and the plate and shell-type heat exchanger using the heat exchanging plate. The heat exchanging plate is provided with two transverse partitions and, by means of a plate-side flow channel of a plate-side deflector strip (22) on the heat exchanging plate, forms two linked transverse flows or flow areas separated from each other. This heat exchanging plate can be used to construct a single-flow heat exchanger of increased efficiency and a multi-flow plate and shell-type heat exchanger having plate-side connecting pipes arranged on a front-extremity flange cover and a detachable heat-exchanging core. This multi-flow plate and shell-type heat exchanger is convenient to be opened for servicing and mechanical cleaning.
D: An air conditioning unit having a tubesheet combined heat-exchanging evaporative condenser (2), comprising a compressor (1), an evaporative condenser (2), a throttling device (3), an evaporator (4) and a fan (5); the evaporative condenser (2) comprises a cooling fan (21), a water distributor (23), a water-collecting reservoir (24) and a tubesheet combined heat exchanger (25); the tubesheet combined heat exchanger (25) is formed by connecting a plurality of tubesheet combined heat-exchanging members via an inlet header and an outlet header; the tubesheet combined heat-exchanging members comprise a heat-transferring plate (27), and a coil pipe (26) formed by machining a heat-exchanging pipe; the heat-transferring plate (27) is provided with a receiving groove (28), and a shape of the receiving groove (28) matches a shape of the coil pipe (26); the coil pipe (26) is placed in the receiving groove (28), and a heat-conducting bonding layer (29) is filled in a gap between the coil pipe (26) and the receiving groove (28); the heat-conducting bonding layer (29) enables a full contact between the heat-transferring plate (27) and the coil pipe (26), thus increasing a heat-exchange area; and the heat-transferring plate (27) can guide cooling water to form a continuous flow surface, thus increasing an evaporation area of the cooling water, improving a heat-exchange efficiency and reducing a volume of the condenser.
Answer: C