Multi-heat-source waste heat recovery device

Abstract

The utility model discloses a multi-heat-source waste heat recovery device. The device comprises a water-water heat pump unit, a dry cleaning machine cooling water coil pipe, a laundry room air conditioning box, a refrigeration house refrigeration compressor water-cooling condenser and a hot water tank, wherein the water-water heat pump unit comprises an evaporator and a condenser which are circularly connected; the dry cleaning machine cooling water coil is in heat transfer connection with the evaporator; the laundry room air-conditioning box is connected in parallel to the dry cleaning machine cooling water coil pipe; the cold storage refrigeration compressor water-cooling condenser is connected in parallel with the dry cleaning machine cooling water coil pipe and the laundry room air conditioning box; the hot water tank is in heat transfer connection with the condenser and communicates with a domestic hot water system through a third pipeline. Through the arrangement, the tap water consumption increased for cooling the dry cleaning machine, the cooling water energy consumption increased for cooling the water-cooling condenser of the refrigeration compressor of the refrigeration house and the air conditioner energy consumption increased for cooling the laundry room are saved, waste heat recycling is achieved, heat is supplemented for domestic water, and the purposes of saving energy consumption and saving energy are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy recovery, and in particular relates to a multi-heat source waste heat recovery device. Background Art

[0002] There are various types of heat sources in the building, such as the kitchen cold storage. The water-cooled condenser of the cold storage refrigeration compressor dissipates a large amount of condensation heat, which needs to be cooled by cooling water provided by the cooling tower; for example, the waste heat of the laundry room. The laundry room is hot all year round and needs to be cooled by air conditioning chilled water; another example is the dry cleaning machine in the laundry room. The dry cleaning machine emits a lot of heat during the drying recovery and distillation recovery process. The dry cleaning machine is generally equipped with a water-cooled cooling device, which consumes a large amount of tap water to cool down. This cooling method not only causes a large amount of tap water waste, but also causes changes in the cooling effect due to the change of tap water temperature with the seasons. However, the above cooling methods all require additional energy consumption to achieve the purpose of cooling, and on the other hand, they do not consider the recycling of this part of the waste heat in the building, resulting in increased energy consumption, energy waste, and poor energy saving.

[0003] Based on the above, there is an urgent need for a multi-heat source waste heat recovery device to solve the technical problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-heat source waste heat recovery device, which can recycle and reuse the waste heat generated by multiple heat sources, and at the same time achieve cooling of this part of the heat source in the building based on the energy-saving effect, so as to achieve the purpose of saving energy consumption and energy conservation.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Multi-heat source waste heat recovery device, including:

[0007] A water-to-water heat pump unit comprises an evaporator and a condenser, wherein the evaporator and the condenser are cyclically connected;

[0008] A dry cleaning machine cooling water coil, located in the dry cleaning machine, the dry cleaning machine cooling water coil is connected to the evaporator through a first pipeline for heat transfer;

[0009] A laundry room air conditioning box, located in the laundry room and connected in parallel to the dry cleaning machine cooling water coil through the first pipeline;

[0010] A water-cooled condenser of a cold storage refrigeration compressor is located outside the cold storage and is connected in parallel to the cooling water coil of the dry cleaning machine and the laundry room air conditioning box through the first pipeline;

[0011] A hot water tank is connected to the condenser through a second pipeline for heat transfer, and is connected to a domestic hot water system through a third pipeline.

[0012] Optionally, it also includes a first circulation pump, which is arranged on the first pipeline.

[0013] Optionally, a second circulation pump is further included, and the second circulation pump is arranged on the second pipeline.

[0014] Optionally, a first control valve is provided on the first pipeline connected to the water inlet of the cooling water coil of the dry cleaning machine.

[0015] Optionally, a second control valve is provided on the first pipeline connected to the water inlet of the laundry room air-conditioning box.

[0016] Optionally, a third control valve is provided on the first pipeline connected to the water inlet of the water-cooled condenser of the cold storage refrigeration compressor.

[0017] Optionally, the first control valve is an electric two-way regulating valve; and / or, the second control valve is the electric two-way regulating valve; and / or, the third control valve is the electric two-way regulating valve.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model provides a multi-heat source waste heat recovery device, in which a water-to-water heat pump unit can provide the heat required for heating the water in the hot water tank by absorbing the waste heat of the cooling water of the dry cleaning machine, the waste heat of the laundry room and the waste heat of the cooling water in the water-cooled condenser of the cold storage refrigeration compressor, so that the hot water tank can provide hot water with a suitable temperature for the hot water system for domestic use. Through the above-mentioned setting, not only a large amount of tap water added for cooling the dry cleaning machine, a cooling tower added for cooling the cold storage water, and an air conditioning energy consumption added for cooling the laundry room are saved, but also the waste heat of the dry cleaning machine, cold storage water and laundry room is recycled and utilized, heat is added for domestic water, and a large amount of energy consumption for preparing hot water using a gas boiler can be effectively saved, thereby achieving the purpose of saving energy consumption and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a multi-heat source waste heat recovery device provided in an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Water-to-water heat pump unit; 101. Evaporator; 102. Throttling device; 103. Condenser; 104. Compressor; 2. Dry cleaning machine cooling water coil; 3. First pipeline; 4. Laundry room air conditioning box; 5. Cold storage refrigeration compressor water-cooled condenser; 6. Hot water tank; 7. Second pipeline; 8. Third pipeline; 9. First circulation pump; 10. Second circulation pump; 11. First control valve; 12. Second control valve; 13. Third control valve. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0026] The technical solution provided by the utility model is introduced below in conjunction with the accompanying drawings and specific embodiments.

[0027] Reference Figure 1As shown, this embodiment provides a multi-heat source waste heat recovery device, including a water-to-water heat pump unit 1, a dry cleaning machine cooling water coil 2, a laundry room air conditioning box 4, a cold storage refrigeration compressor water-cooled condenser 5 and a hot water tank 6. Among them, the water-to-water heat pump unit 1 mainly includes an evaporator 101, a throttling device 102, a condenser 103 and a compressor 104, wherein the input end of the evaporator 101 is connected to the output end of the condenser 103 through the throttling device 102, and the output end of the evaporator 101 is connected to the input end of the condenser 103 through the compressor 104. After the liquid refrigerant flowing through the evaporator 101 absorbs heat and evaporates to become a gaseous refrigerant, it is transported to the condenser 103 under the action of the compressor 104, and after releasing heat again at the condenser 103 to become a liquid refrigerant, it circulates back to the evaporator 101 through the throttling device 102.

[0028] In addition, the dry cleaning machine cooling water coil 2 is fixedly arranged in the dry cleaning machine, and is heat-transfer-connected to the evaporator 101 through the first pipeline 3; the laundry room air-conditioning box 4 is fixedly arranged in the laundry room, and is connected in parallel with the dry cleaning machine cooling water coil 2 through the first pipeline 3; the cold storage refrigeration compressor water-cooled condenser 5 is fixedly arranged outside the cold storage, and is connected in parallel with the dry cleaning machine cooling water coil 2 and the laundry room air-conditioning box 4 through the first pipeline 3; the hot water tank 6 is heat-transfer-connected to the condenser 103 through the second pipeline 7, and is connected to the domestic hot water system through the third pipeline 8.

[0029] In the multi-heat source waste heat recovery device provided in this embodiment, the water-to-water heat pump unit 1 can provide the heat required for heating the water in the hot water tank 6 by absorbing the waste heat of the cooling water of the dry cleaning machine, the waste heat of the laundry room and the waste heat of the cooling water in the water-cooled condenser 5 of the cold storage refrigeration compressor, so that the hot water tank 6 can provide hot water with a suitable temperature for the hot water system for domestic use. In this way, not only a large amount of tap water added for cooling the dry cleaning machine, a cooling tower added for cooling the cold storage water, and air conditioning energy consumption added for cooling the laundry room are saved, but also the waste heat of the dry cleaning machine, cold storage water and laundry room is recycled and utilized, and heat is added for domestic water. It can also effectively save a large amount of energy consumption for preparing hot water using a gas boiler, thereby achieving the purpose of saving energy consumption and energy saving.

[0030] Specifically, refer to Figure 1As shown, the multi-heat source waste heat recovery device provided in this embodiment also includes a first circulation pump 9, which is arranged on the first pipeline 3, so as to accelerate the flow circulation of the low-temperature working medium in the first pipeline 3 through the first circulation pump 9, so as to ensure that the low-temperature working medium can efficiently exchange heat with the liquid refrigerant in the evaporator 101, thereby achieving the purpose of waste heat recovery. It can be understood that this embodiment does not select the type and power of the first circulation pump 9, and those skilled in the art can reasonably select the first circulation pump 9 or adjust the power by detecting the water temperature obtained in the hot water tank 6.

[0031] More specifically, in this embodiment, a second circulating pump 10 is further provided on the second pipeline 7 to accelerate the flow circulation of the high-temperature working medium in the second pipeline 7 through the second circulating pump 10, so as to ensure that the high-temperature working medium can exchange heat with the gaseous refrigerant in the condenser 103, thereby achieving the purpose of transferring the waste heat to the hot water tank 6. Moreover, the provision of the second circulating pump 10 can ensure the flow circulation of the high-temperature working medium in the second pipeline 7, avoid stagnation or accumulation of the high-temperature working medium in the second pipeline 7, and ensure the stable operation of the entire system.

[0032] Specifically, in this embodiment, a first control valve 11 is provided on the first pipeline 3 connected to the water inlet of the dry cleaning machine cooling water coil 2. By providing the first control valve 11, the flow of the working medium entering the dry cleaning machine cooling water coil 2 can be controlled, so that when the dry cleaning machine is in a shutdown state, it can be ensured that there is enough working medium to absorb and remove the heat in the laundry room air conditioning box 4 and the cold storage refrigeration compressor water-cooled condenser 5, thereby improving the recovery efficiency of waste heat. In addition, the staff can increase or decrease the flow of the working medium entering the dry cleaning machine cooling water coil 2 by controlling the opening of the first control valve 11, so as to accurately provide the dry cleaning machine cooling water coil 2 with the working mass required to absorb the waste heat, and also help to adjust the hot water temperature in the hot water tank 6 to a suitable temperature range, thereby greatly enhancing the controllability and flexibility of the entire system.

[0033] In addition, in this embodiment, a second control valve 12 is provided on the first pipeline 3 connected to the water inlet of the laundry room air-conditioning box 4. The principle of the second control valve 12 is similar to that of the first control valve 11. Through the setting of the second control valve 12, it can not only ensure that when the laundry room is not in working state, there is sufficient working fluid to absorb and carry the heat in the cooling water coil 2 of the dry cleaning machine and the water-cooled condenser 5 of the cold storage refrigeration compressor, but also can cooperate with the first control valve 11 to further improve the accuracy and flexibility of regulating the hot water temperature in the hot water tank 6 and improve the recovery efficiency of waste heat.

[0034] More specifically, in the present embodiment, a third control valve 13 is provided on the first pipeline 3 connected to the water inlet of the water-cooled condenser 5 of the cold storage refrigeration compressor. The third control valve 13 is similar in principle to the first control valve 11 and the second control valve 12. When the outlet water temperature of the water-cooled condenser of the cold storage refrigeration compressor reaches a preset temperature range, the opening of the third control valve 13 can be reasonably reduced so that more working fluid can enter the first pipeline 3 connected to the laundry room air-conditioning box 4 and the dry cleaning machine cooling water coil 2 for heat absorption, thereby further ensuring the recovery rate of waste heat. In addition, the staff can regulate the opening of the third control valve 13, the second control valve 12 and the first control valve 11 respectively, so as to further improve the accuracy of the hot water temperature regulation in the hot water tank 6, and greatly shorten the time required to regulate the hot water temperature in the hot water tank 6 to within an appropriate temperature range.

[0035] Preferably, in this embodiment, the first control valve 11, the second control valve 12 and the third control valve 13 are all electric two-way regulating valves, which can be opened, closed and adjusted by electric actuators, so that no manual intervention is required, automatic control is achieved, and the working pressure of operators is reduced. In addition, the electric two-way regulating valve also has the advantages of high control accuracy and fast response speed, so that the first control valve 11, the second control valve 12 and the third control valve 13 can adjust the valve opening in a timely and accurate manner according to the needs, thereby effectively ensuring the stability and safety of the entire system.

[0036] Of course, in other embodiments, at least one of the first control valve 11, the second control valve 12 and the third control valve 13 adopts a manual valve, and at least another one adopts an electric two-way regulating valve, so as to make full use of the respective characteristics of the manual valve and the electric two-way regulating valve to achieve the best control effect on the water temperature in the hot water tank 6, that is, it can adapt to certain scenarios that require manual intervention and adjustment, so as to facilitate the staff to perform regular inspections, maintenance or emergency shutdowns, and can also achieve accurate and continuous adjustment of the water temperature in the hot water tank 6.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A multi-heat source waste heat recovery device, characterized in that: include: A water-to-water heat pump unit (1) comprises an evaporator (101) and a condenser (103), wherein the evaporator (101) and the condenser (103) are cyclically connected; A dry cleaning machine cooling water coil (2), located in the dry cleaning machine, the dry cleaning machine cooling water coil (2) being connected to the evaporator (101) via a first pipeline (3) for heat transfer; A laundry room air conditioning box (4), located in the laundry room and connected in parallel to the dry cleaning machine cooling water coil (2) via the first pipeline (3); A cold storage refrigeration compressor water-cooled condenser (5), located outside the cold storage, and connected in parallel to the dry cleaning machine cooling water coil (2) and the laundry room air conditioning box (4) through the first pipeline (3); A hot water tank (6), the hot water tank (6) is connected to the condenser (103) by heat transfer via a second pipeline (7), and is connected to a domestic hot water system via a third pipeline (8).

2. The multi-heat source waste heat recovery device according to claim 1, characterized in that: It also comprises a first circulation pump (9), wherein the first circulation pump (9) is arranged on the first pipeline (3).

3. The multi-heat source waste heat recovery device according to claim 1, characterized in that: It also comprises a second circulation pump (10), wherein the second circulation pump (10) is arranged on the second pipeline (7).

4. The multi-heat source waste heat recovery device according to claim 1, characterized in that: A first control valve (11) is provided on the first pipeline (3) connected to the water inlet of the cooling water coil (2) of the dry cleaning machine.

5. The multi-heat source waste heat recovery device according to claim 4, characterized in that: A second control valve (12) is provided on the first pipeline (3) connected to the water inlet of the laundry room air conditioning box (4).

6. The multi-heat source waste heat recovery device according to claim 5, characterized in that: A third control valve (13) is provided on the first pipeline (3) connected to the water inlet of the water-cooled condenser (5) of the cold storage refrigeration compressor.

7. The multi-heat source waste heat recovery device according to claim 6, characterized in that: The first control valve (11) is an electric two-way regulating valve; and / or the second control valve (12) is the electric two-way regulating valve; and / or the third control valve (13) is the electric two-way regulating valve.

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