DE202018104940U1 - High-performance evaporation condenser with a cooling and heat-complementary function - Google Patents

Abstract

A high performance evaporative condenser having a cold and heat complementary function comprising a fin and a straight tube located in the middle of the fin, two ends of the straight tube being connected by a manifold to form an S-shaped running line of a refrigerant, characterized in comprising 2N rows of juxtaposed straight rows of tubes, N being a natural number; in that the straight tube rows comprise two heat exchange branches, and the straight tube of each heat exchange branch on one side of the heat exchanger is volt-connected in series through the manifold and cross-connected to the other side of the heat exchanger, and a plurality of U-shaped tube segments of the same row are formed on the volt connection side is, wherein the U-shaped tube segments of the same row of each heat exchanger successively enter alternately from a series of straight tubes via a bridging manifold in another series of straight tubes.

Description

Technical area

The utility model relates to the field of heat exchange technology, and more particularly to a high performance evaporative condenser having a cold and heat complementary function.

State of the art

The existing combined heat pump unit of air conditioner and hot water machine has the following disadvantages: for the refrigerant distribution in various modes, it is difficult to achieve the optimum ratio, the adaptability of the working condition change is poor, the hot water production efficiency and the efficiency of the air conditioner are low and the oil return is difficult, etc. As a result, this product can not meet market demand.

Content of the invention

The utility model aims to provide a high performance evaporative condenser with a cold and heat complementary function, particularly when used in a new source air triple feed system, to provide the necessary technical support for multiple function conversion such as heat transfer area multiplication, complementary deicing and energy storage heating.

The technical solution for solving the technical problem is: high-efficiency evaporating condenser having a cold and heat complementary function, comprising a rib and a straight pipe arranged in the middle of the rib, two ends of the straight pipe being connected by a manifold, to form an S-shaped running line of a refrigerant, characterized by comprising 2N rows of juxtaposed straight rows of tubes, N being a natural number; in that the straight tube rows comprise two heat exchange branches, and the straight tube of each heat exchange branch on one side of the heat exchanger is volt-connected in series through the manifold and cross-connected to the other side of the heat exchanger, and a plurality of U-shaped tube segments of the same row are formed on the volt connection side is, wherein the U-shaped tube segments of the same row of each heat exchanger successively enter alternately from a series of straight tubes via a bridging manifold in another series of straight tubes.

That each heat exchange branch is divided into three branches, ie upper, middle and lower branches, which are arranged parallel to each other, wherein on the inlet side of three branches of the first heat exchange branch, a first liquid separator is connected, and at the outlet side of which a first liquid collector is connected; in that a second liquid separator is connected to the inlet side of three branches of the second heat exchange branch, and a second liquid collector is connected to the outlet side thereof.

That the first liquid separator and the first liquid collector are connected in a cooling circuit comprising a first compressor and an evaporator, while the second liquid separator and the first liquid collector are connected in a cooling circuit comprising a second compressor and a jacket tube heat exchanger.

That is chosen for the value of N 2 or 3.

That each heat exchange branch is divided into two branches, ie upper and lower branches, which are arranged parallel to one another, wherein a first liquid separator is connected to the inlet side of two branches of the first heat exchange branch, and a first liquid collector is connected to the outlet side thereof; in that a second liquid separator is connected to the inlet side of two branches of the second heat exchange branch, and a second liquid collector is connected to the outlet side thereof.

The beneficial effects of the utility model are:

The utility model combines the evaporator and the condenser to realize the complementary heat and cold, while improving the heat conduction efficiency through the piping design of the "braided mesh". The tubes of the two cooling systems are nested and intertwined to achieve a "cold and heat-complementary" energy bridging.

The utility model can be used in the cascade cooling dehumidifier, especially in the new source air triple feed system, to realize the conversion of multiple functions such as heat transfer surface multiplication, complementary deicing and energy storage heating.

It is ensured that the air conditioner and the hot water system have the ability to input and output energy storage and Mutual Assistance to ensure better use in cold areas.

list of figures

• 1 is a schematic view of a cooling system to which the present utility model is applied.
• 2 FIG. 12 is a schematic structural view (front view) of the evaporation condenser of the present utility model. FIG.
• 3 FIG. 12 is a schematic structural view (side view) of the evaporation condenser of the present utility model. FIG.
• 4 FIG. 12 is a schematic structural view (plan view) of the evaporation condenser of the present utility model. FIG.

Detailed embodiments

Embodiments of the present invention will be described below in detail.

As in 1 to 4 1, the utility model presents a high performance evaporative condenser with a cold and heat complementary function comprising a fin 21 and a straight tube disposed in the middle of the rib, two ends of the straight tube passing through a manifold 22 are connected to form an S-shaped running line of a refrigerant. The high-performance evaporative condenser in use comprises four rows of juxtaposed straight tube rows ( 25 . 26 . 27 . 28 ), wherein the four straight tube rows two heat exchange branches ( 101 . 102 ), and the straight tube of each heat exchange branch on the left side of the heat exchanger through the manifold 22 is volt-connected in series, and is cross-connected to the other side of the heat exchanger, and on the Voltverbindungsseite U-shaped through the manifold 22 and the two interconnected straight tube tube segments of the same row are formed. That is, viewed from the left side of the heat exchanger, two straight tubes of each U-shaped tube segment of the same row are located on the straight tube row of the same vertical row. The high performance evaporative condenser in use includes remote straight tube rows ( 25 . 26 . 27 . 28 ), wherein the U-shaped tube segments of the same row of each heat exchanger successively enter alternately from a series of straight tubes via a bridging manifold into another row of straight tubes. The U-shaped tube segments of the same row of the first heat exchange branch 101 first bridges from the straight tube row 25 over a large manifold 221 on the U-shaped pipe segments of the same row on the straight pipe row 26 , and returns via a smallpillar 222 to the U-shaped pipe segments of the same row on the straight pipe row 25 back, and bridged again over the main manifold 221 on the straight row of pipes 26 , and then returns to the straight row of pipes 25 back, and so it repeats itself. When they get to the bottom (on the straight row of pipes 26 ), she is with the straight tube row 27 connected by a guide tube (not shown) and changes the course alternately between the straight row of tubes 27 and the straight tube row 28 and then in the same way it comes out of the top part of the straight tube row 27 out. The second heat exchange branch 102 also comes out of the straight row of tubes first 26 then exits via a smallpillar (see the smallpillar indicated by the dashed line 222 ) in the straight row of pipes 25 and then returns via a main manifold (see the large manifold indicated by the dashed line 221 ) to the straight tube row 26 back. Finally, it emerges from the top part of the straight row of pipes 28 out. In this way, the tubes of the heat exchanger are crossed, and the heat exchange through the ribs is more thorough and thereby improves the cooling and heat-complementary efficiency.

Each heat exchange branch is divided into upper, middle and lower branches, which are arranged parallel to each other. L1 represents the upper branch portion of the four heat exchange branches, L2 stands for the middle branch of the four heat exchange branches, L3 represents the lower branch of the four heat exchange branches, and the three groups of branches are connected in parallel, so that the overall temperature distribution of the heat exchanger is more uniform.

In each branch of the upper, middle and lower branches, it is provided as a development of the line arrangement that the first heat exchange branch 101 and the second heat exchange branch 102 are distributed in a side-by-side arrangement, that is, in each branch occurs the first heat exchange branch 101 in two lines from above and exits from the bottom of the junction. Thus, six branches are distributed throughout the heat exchanger. Similarly, the second heat exchange branch 102 also distributed in the upper, middle and lower branches in six branches.

Further, as a development of the piping arrangement, it is provided that the first heat exchanging branch and the second heat exchanging branch have opposite courses, that is, the refrigerant of the first heat exchanging branch enters the heat exchanger from the tip portion of the heat exchanging branch and the refrigerant of the second heat exchanging branch emerges from the bottom of the heat exchanging branch in the heat exchanger.

Since the heat exchanger assumes a two-row structure with three inputs and three outputs, the three branches of each heat exchange branch are connected by a liquid separator and a liquid collector, and the three branches of the first heat exchange branch are all through their inlets with the first liquid separator and all over their outlets connected to the first liquid collector; the three branches of the second heat exchange branch are all connected via their inlets to the second liquid separator and all via their outlets to the second liquid collector.

The first liquid separator and the first liquid collector are connected in a first cooling circuit, while the second liquid separator and the first liquid collector are connected in a second cooling circuit. The four heat exchange branches are each assigned to two independent cooling circuits. As in 1 shown, the first cooling circuit includes a first compressor 1 , a first four-way electromagnetic valve 2 , an evaporation condenser 10 , a first throttle element 3 , an evaporator 4 and a first liquid storage (not shown). The second cooling circuit includes a second compressor 11 , a second four-way electromagnetic valve 12 , a jacket tube heat exchanger 14 , a second throttle element 13 , an evaporation condenser 10 and a second liquid storage (not shown).

As in 1 shown, the work process becomes two processes 1 ) Cooling generated by air conditioning and 2) Hot water supplies shared when the cold air is needed and needs to be heated at the same time. The two processes are executed simultaneously: 1 ) first compressor 1 → High-pressure gas line → first electromagnetic four-way valve 2 : The end a communicates with the end b → branch F1 the evaporation condenser 10 → electronic expansion valve of the indoor unit (first throttle element 3 ) → Liquid pipe → Evaporator 4 (Air conditioner indoor unit) → first four-way electromagnetic valve 2 : The end c communicates with the end d → the low pressure gas line → the first liquid storage → first compressor 1 ,

2) first compressor 11 → High-pressure gas line → second electromagnetic four-way valve 12 : The End a1 communicates with the end b1 → Refrigerant pipe of casing heat exchanger 14 → second throttle element 13 → Liquid pipe → branch F2 the evaporation condenser 10 → second electromagnetic four-way valve 12 : The end c1 communicates with the end d1 → the low-pressure gas line → gas-liquid separator (or second liquid store) → second compressor 11 ,

The existing heat pump system with cold water hot water triple feed is a refrigerant circuit of a compressor drive system. The system is equipped with a hot water heat exchanger, an evaporator, a cold water heat exchanger. When the hot water or only the cold hot water is generated in detail, the cold water heat exchanger or the hot water heat exchanger does not serve as a condensation system, which easily leads to an unbalanced state and thus instability of the system. After the train of thought of the present utility model that two systems, ie air conditioning and hot water machine are relatively independent and mutually supportive, the condenser of the air conditioner and the evaporator of the hot water machine are combined into one and each belong to two independent cooling systems. This corresponds to combining the evaporators and the condensers of two separate refrigerators, optimizing the overall system.

In addition, the heat exchanger is designed so that he 4 Rows of straight rows, ribs, hole spacing 25 , With the integrated ribs two groups of lines are bridged, and by the design of the small fragment and its connection type, the tubes of the heat exchanger are crossed and thereby the complementary cooling and heat efficiency is improved. To ensure even distribution of the refrigerant, the heat exchanger is designed as a double three-input three-output structure and overall performance is optimized.

Claims (5)

A high performance evaporative condenser having a cold and heat complementary function comprising a fin and a straight tube located in the middle of the fin, two ends of the straight tube being connected by a manifold to form an S-shaped running line of a refrigerant, characterized in comprising 2N rows of juxtaposed straight rows of tubes, N being a natural number; the straight tube rows comprise two heat exchange branches, and the straight tube of each heat exchange branch on one side of the heat exchanger is volt-connected in series through the manifold, and cross-connected to the other side of the heat exchanger, and a plurality of U-shaped tube segments of the same row on the Voltage connection side is formed, wherein the U-shaped tube segments of the same row of each heat exchanger successively enter alternately from a series of straight tubes via a bridging manifold in another series of straight tubes. High performance evaporative condenser with a cold and heat complementary function Claim 1 characterized in that each heat exchange branch is subdivided into three branches, ie upper, middle and lower branches arranged parallel to each other, wherein a first liquid separator is connected to the inlet side of three branches of the first heat exchange branch, and to the outlet side of which a first liquid collector connected; in that a second liquid separator is connected to the inlet side of three branches of the second heat exchange branch, and a second liquid collector is connected to the outlet side thereof. High performance evaporative condenser with a cold and heat complementary function Claim 2 characterized in that the first liquid separator and the first liquid collector are connected in a cooling circuit comprising a first compressor and an evaporator, while the second liquid separator and the first liquid collector are connected in a cooling circuit comprising a second compressor and a jacket tube heat exchanger. High performance evaporative condenser with a cold and heat complementary function Claim 3 , characterized in that is chosen for the value of N 2 or 3. High performance evaporative condenser with a cold and heat complementary function Claim 1 , characterized in that each heat exchange branch is divided into two branches, ie upper and lower branches, which are arranged parallel to one another, wherein a first liquid separator is connected to the inlet side of two branches of the first heat exchange branch, and a first liquid collector is connected to the outlet side thereof ; in that a second liquid separator is connected to the inlet side of two branches of the second heat exchange branch, and a second liquid collector is connected to the outlet side thereof.

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