Condensation and gasification integrated device and heat supply system

Abstract

The utility model discloses a condensation and gasification integrated device and a heat supply system, the device comprises a shell, a heat exchange coil pipe, a water inlet, a steam outlet, a refrigerant inlet pipe and a refrigerant outlet pipe, the shell is provided with an air inlet cavity, a heat exchange cavity, a steam cavity, a transfer cavity and a liquid outlet cavity, the heat exchange coil pipe is divided into an upper coil pipe and a lower coil pipe, the refrigerant air inlet pipe, the air inlet cavity, the upper coil pipe, the transfer cavity, the lower coil pipe, the liquid outlet cavity and the refrigerant liquid outlet pipe are sequentially communicated to form a refrigerant heat dissipation channel, the water inlet is formed in the bottom of the shell and communicated with the heat exchange cavity, and the steam outlet is formed in the top of the shell and communicated with the steam cavity. According to the condensation and gasification integrated device, a condensation and gasification integrated structure is integrated, the effect of directly discharging steam is achieved in the same tank body, a flash evaporation device is omitted, the equipment investment is reduced, and the later maintenance cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a condensation and gasification integrated device and a heating system. Background Art

[0002] Heat pump is a highly efficient energy-saving device that fully utilizes low-grade thermal energy. Heat can be transferred spontaneously from a high-temperature object to a low-temperature object, but not spontaneously in the opposite direction. The working principle of a heat pump is a mechanical device that forces heat to flow from a low-temperature object to a high-temperature object in a reverse cycle. It consumes only a small amount of reverse cycle net work to obtain a large amount of heat supply, and can effectively utilize the low-grade thermal energy that is difficult to use to achieve energy saving.

[0003] Generally, a heat pump includes a compressor, a condenser, an expansion valve and an evaporator connected end to end. After being compressed by the compressor, the refrigerant forms a gaseous high-temperature refrigerant. The gaseous high-temperature refrigerant then passes through the condenser for heat exchange, condenses the heat in the condenser and releases it to heat the water on the other side to achieve heating. Subsequently, the liquid low-temperature refrigerant is throttled and expanded by the expansion valve, and then enters the evaporator to vaporize and absorb heat to obtain a gaseous refrigerant. After being pressurized by the compressor, a pressure difference cycle is formed, and the cycle is repeated.

[0004] At present, the method of making steam by heat pump is to add a flash evaporation device on the basis of condenser. The heat pump heating cycle provides heat for the condenser. Cold water passes through the condenser to form high-temperature hot water. The high-temperature hot water is then passed through the flash evaporation device to obtain the required steam. In the above technology, due to the combination of condenser + flash evaporation device, the overall equipment is large in size and occupies a large area. In addition, it is necessary to configure a flash evaporation device on the basis of condenser, which increases the investment in equipment and the subsequent maintenance cost. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide an integrated condensation and vaporization device to solve the above-mentioned traditional problems. It improves the condenser structure so that it combines condensation and vaporization in one device to achieve the effect of direct steam output in the same tank body.

[0006] The second object of the utility model is to provide a heating system using the integrated condensation and gasification device.

[0007] One of the purposes of the utility model is achieved by the following technical solution:

[0008] A condensation and gasification integrated device comprises a shell, a heat exchange coil arranged in the shell, a water inlet, a steam outlet, a refrigerant air inlet pipe and a refrigerant liquid outlet pipe arranged on the shell, the shell having an air inlet cavity, a heat exchange cavity, a steam cavity, a transfer cavity and a liquid outlet cavity, the heat exchange coil is placed in the heat exchange cavity, the steam cavity is arranged at the upper part of the heat exchange cavity, the heat exchange coil is divided into an upper coil and a lower coil, the refrigerant air inlet pipe, the air inlet cavity, the upper coil, the transfer cavity, the lower coil, the liquid outlet cavity and the refrigerant liquid outlet pipe are connected in sequence to form a refrigerant heat dissipation channel, the water inlet is arranged at the bottom of the shell and is connected to the heat exchange cavity, the steam outlet is arranged at the top of the shell and is connected to the steam cavity.

[0009] Preferably, the volume ratio between the heat exchange chamber and the steam chamber is 1:(0.8-1.2).

[0010] Preferably, the volume ratio between the heat exchange chamber and the steam chamber is 1:1.1.

[0011] Preferably, a partition plate is provided between the air inlet cavity and the liquid outlet cavity, the refrigerant air inlet pipe is provided at one end of the air inlet cavity away from the partition plate, and the refrigerant liquid outlet pipe is provided at one end of the liquid outlet cavity close to the partition plate.

[0012] Preferably, the total heat exchange area of ​​the upper coil is greater than the total heat exchange area of ​​the lower coil.

[0013] Preferably, the total heat exchange area of ​​the upper coil is 1.1-2.2 of the total heat exchange area of ​​the lower coil.

[0014] Preferably, a liquid baffle is further provided in the shell, and the liquid baffle is placed at the upper part of the steam chamber and located at the lower part of the steam outlet, and a flow gap is provided between the liquid baffle and the steam outlet.

[0015] Preferably, the shell is also provided with a drain port, a safety valve interface, a pressure gauge interface and a liquid level gauge interface. The drain port is arranged at the bottom of the shell, the safety valve interface and the pressure gauge interface are both arranged at the top of the shell, and the liquid level gauge interface is arranged at the side of the shell.

[0016] Preferably, a heating inlet and a heating outlet are further provided at the bottom of the shell, and the heating inlet and the heating outlet are respectively communicated with the heat exchange chamber.

[0017] The second purpose of the utility model is achieved by the following technical solution:

[0018] A heating system comprises the above-mentioned integrated condensation and gasification device.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The utility model discloses a condensation and gasification integrated device which divides the interior of a shell into a heat exchange chamber and a steam chamber, a heat exchange coil is placed in the heat exchange chamber, and a high-temperature gas refrigerant is passed into the upper heat exchange coil to transfer most of the heat to the system water in the upper part of the heat exchange chamber for heating. The refrigerant after heat exchange then flows out from the lower heat exchange coil, and the remaining heat is used to preheat the system water in the lower part of the heat exchange chamber, thereby continuously heating the system water in the heat exchange chamber, so that the steam formed thereby flows into the steam chamber and is then output from the steam outlet, thereby integrating the condensation and gasification integrated structure and realizing the effect of direct steam output in the same tank body, thereby eliminating a flash evaporation device, reducing the investment in equipment, and reducing the subsequent maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the condensation and gasification integrated device of the utility model;

[0022] Figure 2 for Figure 1 The structural diagram of one end of the integrated condensation and gasification device shown is without the cover.

[0023] In the figure: 10, shell; 11, water inlet; 12, steam outlet; 13, refrigerant air inlet pipe; 14, refrigerant liquid outlet pipe; 15, air inlet chamber; 16, heat exchange chamber; 17, steam chamber; 18, transfer chamber; 19, liquid outlet chamber; 20, heat exchange coil; 21, upper coil; 22, lower coil; 30, liquid baffle. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the description of the present utility model, it is necessary to understand that when an element is considered to be "connected" to another element, it may be directly connected to another element or there may be intermediate elements at the same time. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0027] See also Figure 1 and Figure 2 , which is a preferred embodiment of the utility model, a condensation-gasification integrated device is used to be installed on a heat pump unit, wherein the heat pump unit also includes a compressor, an expansion valve and an evaporator, and the two ends of the condensation-gasification integrated device are respectively connected to the compressor and the expansion valve, and high-temperature steam is directly produced by absorbing the temperature of the high-temperature refrigerant compressed by the compressor. Specifically, the condensation-gasification integrated device includes a shell 10, a heat exchange coil 20 arranged in the shell 10, a water inlet 11, a steam outlet 12, a refrigerant air inlet pipe 13 and a refrigerant liquid outlet pipe 14 arranged on the shell 10, the shell 10 has an air inlet chamber 15, a heat exchange chamber 16, a steam chamber 17, a transfer chamber 18 and a liquid outlet chamber 19, the heat exchange coil 20 is placed in the heat exchange chamber 16, the steam chamber 17 is arranged at the upper part of the heat exchange chamber 16 (the steam chamber 17 and the heat exchange chamber 16 are divided by the water level), and the heat exchange coil 20 is divided into an upper coil 21 and a lower coil 22. The coil 22, the refrigerant air inlet pipe 13, the air inlet cavity 15, the upper coil 21, the transfer cavity 18, the lower coil 22, the liquid outlet cavity 19, and the refrigerant liquid outlet pipe 14 are connected in sequence to form a refrigerant heat dissipation channel. The refrigerant air inlet pipe 13 is used to be connected to the outlet of the compressor to introduce high-temperature gaseous refrigerant. The refrigerant liquid outlet pipe 14 is used to be connected to the inlet of the expansion valve to output low-temperature liquid refrigerant. The water inlet 11 is arranged at the bottom of the shell 10, and the water inlet 11 is connected to the heat exchange cavity 16. The steam outlet 12 is arranged at the top of the shell 10, and the steam outlet 12 is connected to the steam cavity 17.

[0028] The above-mentioned integrated condensation and vaporization device divides the interior of the shell 10 into a heat exchange chamber 16 and a steam chamber 17, and the heat exchange coil 20 is placed in the heat exchange chamber 16. The high-temperature refrigerant gas is passed into the upper heat exchange coil 20, and most of the heat is transferred to the system water in the upper part of the heat exchange chamber 16 for heating. The refrigerant after heat exchange flows out from the lower heat exchange coil 20, and the remaining heat is used to preheat the system water in the lower part of the heat exchange chamber 16, and the system water in the heat exchange chamber 16 is continuously heated, so that the steam formed flows into the steam chamber 17 and is output from the steam outlet 12, so that it integrates the condensation and vaporization integrated structure, and realizes the effect of direct steam output in the same tank body, which not only saves a flash evaporation device, reduces the investment in equipment, but also reduces the subsequent maintenance cost.

[0029] In one embodiment, the volume ratio between the heat exchange chamber 16 and the steam chamber 17 is 1:(0.8-1.2), such as 1:0.8, 1:0.9, 1:1, 1:1.1, 1:1.2, preferably, the volume ratio between the heat exchange chamber 16 and the steam chamber 17 is 1:1.1. It depends on the steam output and heat storage capacity.

[0030] In the present embodiment, a partition plate is provided between the air inlet chamber 15 and the liquid outlet chamber 19, that is, a head of the shell 10 is divided into the air inlet chamber 15 and the liquid outlet chamber 19 by the partition plate, and the refrigerant air inlet pipe 13 and the refrigerant liquid outlet pipe 14 are respectively arranged on the sides of the shell 10. The refrigerant air inlet pipe 13 is arranged at one end of the air inlet chamber 15 away from the partition plate, that is, it is arranged slightly upward, and does not directly collide with the heat exchange coil 20, which is conducive to the flow of the refrigerant. The refrigerant liquid outlet pipe 14 is arranged at one end of the liquid outlet chamber 19 close to the partition plate, that is, it is arranged slightly upward, which is convenient to increase the heat exchange time of the refrigerant in the heat exchange coil 20.

[0031] In one embodiment, the total heat exchange area of ​​the upper coil 21 is greater than that of the lower coil 22 to improve the heat exchange effect of the upper part. Preferably, the total heat exchange area of ​​the upper coil 21 is 1.1-2.2 of the total heat exchange area of ​​the lower coil 22.

[0032] Optionally, a liquid baffle 30 is further provided in the shell 10, and the liquid baffle 30 is placed at the upper part of the steam chamber 17 and at the lower part of the steam outlet 12, and there is a flow gap between the liquid baffle 30 and the steam outlet 12. The shell 10 is also provided with a drain port, a safety valve interface, a pressure gauge interface and a liquid level gauge interface. The drain port is provided at the bottom of the shell 10 for discharging sewage, the safety valve interface and the pressure gauge interface are both provided at the top of the shell 10, the safety valve interface is used to install the safety valve, the pressure gauge interface is used to install the pressure gauge, and the liquid level gauge interface is provided on the side of the shell 10 for installing the liquid level gauge. The liquid level gauge is used to judge the current liquid level in the steam generator to control the opening of the water replenishment electric valve to realize the controllable water level in the steam generator, so that the liquid level in the tank slightly immerses the heat exchange coil 20 or is slightly lower than the highest position of the heat exchange coil 20. An electric control valve is provided at the steam outlet 12, and the saturation temperature and pressure of the steam are controlled by adjusting the opening of the top electric valve.

[0033] In one of the embodiments, a heating inlet and a heating outlet are further provided at the bottom of the shell 10, and the heating inlet and the heating outlet are respectively connected to the heat exchange chamber 16 for connecting an external heating device. When starting at a low temperature, due to the low water temperature, more liquid refrigerant accumulates in the heat exchange coil 20 at the bottom, so that when the equipment is just started, the gas refrigerant cannot flow out smoothly, resulting in a lack of pressure in the overall refrigerant circulation system, thereby causing the heat pump to fail to start. Therefore, when the temperature is relatively low, the water in the tank is heated by connecting to a heating device, and the refrigerant circulation can flow out smoothly to solve the problem of the equipment failing to start at a low temperature.

[0034] In other embodiments, the utility model also provides a heating system, including a heat pump unit and a heating pipe connected to the heat pump unit, wherein the heat pump unit includes the integrated condensation and gasification device of the above embodiment, and high-temperature steam is prepared through the integrated condensation and gasification device.

[0035] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A condensation and gasification integrated device, characterized in that: It includes a shell, a heat exchange coil arranged in the shell, a water inlet, a steam outlet, a refrigerant air inlet pipe and a refrigerant liquid outlet pipe arranged on the shell, the shell has an air inlet chamber, a heat exchange chamber, a steam chamber, a transfer chamber and a liquid outlet chamber, the heat exchange coil is placed in the heat exchange chamber, the steam chamber is arranged at the upper part of the heat exchange chamber, the heat exchange coil is divided into an upper coil and a lower coil, the refrigerant air inlet pipe, the air inlet chamber, the upper coil, the transfer chamber, the lower coil, the liquid outlet chamber, and the refrigerant liquid outlet pipe are connected in sequence to form a refrigerant heat dissipation channel, the water inlet is arranged at the bottom of the shell and is connected to the heat exchange chamber, and the steam outlet is arranged at the top of the shell and is connected to the steam chamber.

2. The condensation and gasification integrated device according to claim 1, characterized in that: The volume ratio between the heat exchange chamber and the steam chamber is 1:(0.8-1.2).

3. The condensation and gasification integrated device according to claim 2, characterized in that: The volume ratio between the heat exchange chamber and the steam chamber is 1:1.

1.

4. The condensation and gasification integrated device according to claim 1, characterized in that: A partition plate is provided between the air inlet cavity and the liquid outlet cavity, the refrigerant air inlet pipe is provided at one end of the air inlet cavity away from the partition plate, and the refrigerant liquid outlet pipe is provided at one end of the liquid outlet cavity close to the partition plate.

5. The condensation and gasification integrated device according to claim 1, characterized in that: The total heat exchange area of ​​the upper coil is greater than the total heat exchange area of ​​the lower coil.

6. The condensation and gasification integrated device according to claim 5, characterized in that: The total heat exchange area of ​​the upper coil is 1.1-2.2 of the total heat exchange area of ​​the lower coil.

7. The condensation and gasification integrated device according to claim 1, characterized in that: A liquid baffle is also provided in the shell. The liquid baffle is placed on the upper part of the steam chamber and located at the lower part of the steam outlet. A flow gap is provided between the liquid baffle and the steam outlet.

8. The condensation and gasification integrated device according to claim 1, characterized in that: The shell is also provided with a drain port, a safety valve interface, a pressure gauge interface and a liquid level gauge interface. The drain port is arranged at the bottom of the shell, the safety valve interface and the pressure gauge interface are both arranged at the top of the shell, and the liquid level gauge interface is arranged at the side of the shell.

9. The condensation and gasification integrated device according to claim 1, characterized in that: The bottom of the shell is also provided with a heating inlet and a heating outlet, and the heating inlet and the heating outlet are respectively communicated with the heat exchange chamber.

10. A heating system, characterized in that: It comprises the integrated condensation and gasification device as described in any one of claims 1 to 9.

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